Research activity information

• Mar. 2024 Japanese Society for Oceanic Studies, Eikichi Ishikawa memorial prize

  Minato Nakazawa

  Japan society

  IRI

• Long‐term impact of Maternal and Child Health handbook in rural Bangladesh: A post‐trial follow‐up study

  Yorin Watabe, Syed Emdadul Haque, Benay Kumar Datta, Abul Kashem, Minato Nakazawa, Ruoyan Gai Tobe, Rintaro Mori

  Jan. 2025, Pediatrics International

  Scientific journal


• Status of home-based secondhand smoke exposure among children and its association with health risks in Japan

  Masako Yamada, Minato Nakazawa

  Last, Elsevier BV, Feb. 2024, Preventive Medicine Reports, 38, 102585 - 102585, English

  [Refereed]

  Scientific journal


• Community resilience of women in rural areas of Lempira in the Republic of Honduras

  Junko Miyamoto, Minato Nakazawa

  Introduction: Building community resilience is an important part of disaster preparedness. This study aims to determine the factors that influence the status of community resilience and their relationship with social capital. Methods: Data were collected between August and November 2021 by surveying a group of over 18-year-old females in the Republic of Honduras where hit by two hurricanes and a pandemic in 2020. Cluster sampling was used in this study, and face-to-face interviews were done while visiting their houses. The Conjoint Community Resiliency Assessment Measure (CCRAM) was used to examine community resilience score, while the association between social capital, basic attributes, disaster preparedness, and whether the damages by the two hurricanes in 2020, etc. For statistical analysis, we applied multiple regression analysis. Results: Bonding social capital was a factor that lowered community resilience, and bridging social capital was a factor that raised community resilience. The community resilience for those with an elementary school education was higher than those without education but not different from those with more than an elementary school education. Conclusions: Bridging social capital and completing primary education increased community resilience.

  Last, Universidad de Costa Rica, Dec. 2023, Población y Salud en Mesoamérica, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Electrical Conductivity as an Indicator to Assess the Suitability of River Water for Recreational Use

  Hanna Horiguchi, Katsumi Shigemura, Madoka Kitakawa, Minato Nakazawa, Tatsuhiko Noyori, Motomu Inoue, Reo Onishi, Michika Moriwaki, Chisato Yoshimura, Mayumi Kobayashi, Toshinobu Suzaki

  Japan Society on Water Environment, 2023, Journal of Water and Environment Technology, 21(4) (4), 204 - 212, English

  [Refereed]

  Scientific journal


• Knowledge and Preventive Practice during COVID-19 Pandemic in Bagmati Province, Nepal

  Gita Shrestha, Bharat Negi, Minato Nakazawa

  Last, Scientific Research Publishing, Inc., 2023, Journal of Biosciences and Medicines, 11(07) (07), 112 - 124, English

  Scientific journal


• 日本のCOVID-19禍における周産期うつの実態とその関連要因

  堀口 範奈, 中澤 港, 松島 みどり

  (公社)日本看護科学学会, Dec. 2022, 日本看護科学会誌, 42, 509 - 517, Japanese


• Smoking and drinking behavior, knowledge, and attitudes among urban and rural public-school students in Efate Island, Vanuatu: a comparative study

  Emi Nakaseko, Sayaka Kotera, Minato Nakazawa

  Abstract Background Underage smoking and drinking are public health issues in Vanuatu. This study aims to describe the behavior, knowledge, attitudes, and perceptions of parents, siblings, and peers regarding smoking and drinking among urban and rural public-school students in Vanuatu. Methods This cross-sectional study included 358 students (urban, 217; rural, 141; aged 12–14 years) from the public schools in Efate Island, Vanuatu. Data were collected using self-administered questionnaires. Chi-square and Mann–Whitney U tests were used to determine the rural–urban differences. Results Urban students showed a higher prevalence of ever smoking (13.5%), ever drinking (16.9%), intention to smoke (11.1%), and intention to drink (14.0%) compared to rural students (10.3%, 8.3%, 5.8%, and 9.5%, respectively); although a significant difference was only observed in the prevalence of ever drinking. Urban students were more likely to be aware of the health hazards of substance use and showed higher self-efficacy to refuse tobacco and alcohol compared to rural students. Parents in rural areas were less likely to talk about the health hazards of substance use with their children and were more likely to offer tobacco or alcohol to them compared to parents in urban areas. Conclusions The results provide evidence of rural–urban differences in the behavior, attitude, knowledge, and perceptions of parental behavior regarding smoking and drinking. The findings suggest that issues related to underage smoking and drinking differ between urban and rural students. Future intervention programs for reducing underage smoking and drinking should be adapted in recognition of urban and rural differences.

  Springer Science and Business Media LLC, Jul. 2022, Archives of Public Health, 80(1) (1)

  Scientific journal


• The Current Use of Sakau (Kava) in Pohnpei Island, Federated States of Micronesia.

  Moeno Sakai, Minato Nakazawa

  Last, Jul. 2022, Hawaii J Health Soc Welf., 81(7) (7), 179 - 184, English

  [Refereed]

  Scientific journal


• The association between food groups and childhood anemia in Zambia, based on the analysis of Zambia Demographic and Health Survey 2018

  Emi Kobayashi, Bharat Negi, Minato Nakazawa

  High prevalence of anemia among children has been an important public health concern globally. In Zambia, the prevalence of anemia among children aged 6-59 months was 58%. Previous studies have suggested that feeding a variety of food prevents anemia. However, it is not yet determined if out of several food groups available locally, some foods have played crucial roles in anemia among young children. The objective of this study was to find out the food groups that were associated with childhood anemia among Zambian children aged 6-59 months. We have obtained the individual-level data related to health and nutrition of the Zambia Demographic Health Survey (ZDHS) 2018 with permission. Children’s feeding, demographic, and household information were analyzed using logistic regression models. Children who consumed food made from grains (AOR:1.2; 95%CI: 1.01-1.46; p=0.044) and cheese or food made from milk (AOR:2.7; 95%CI: 1.19-6.00; p=0.018) showed relatively higher prevalence of anemia than those who did not. Additionally, malnutrition, mother’s anemia and education, and area of living were also significantly associated with prevalence of anemia. Most common food in Zambia is food made from grain. Grain consists of phytic acids which can prevent iron absorption. This is a potential reason for the highlevel anemia among children. Dephytinization strategies should be considered through further studies.

  Last, PAGEPress Publications, May 2022, Journal of Public Health in Africa, 13(1) (1), English

  [Refereed]

  Scientific journal


• Admixture with indigenous people helps local adaptation: admixture-enabled selection in Polynesians

  Mariko Isshiki, Izumi Naka, Ryosuke Kimura, Nao Nishida, Takuro Furusawa, Kazumi Natsuhara, Taro Yamauchi, Minato Nakazawa, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka, Jun Ohashi

  Dec. 2021, BMC Ecology and Evolution, 21(1) (1), English

  [Refereed]

  Scientific journal


• Socioeconomic and Behavioral Factors Associated with Obesity Across Sex and Age in Honiara, Solomon Islands.

  Chihiro Tsuchiya, Takuro Furusawa, Samo Tagini, Minato Nakazawa

  The Solomon Islands is currently experiencing a change in disease burdens, from communicable to non-communicable diseases. Obesity is one of the leading non-communicable diseases causing death. Urgent action is needed to decrease the high economic and personal costs associated with obesity. This study proposes to determine behavioral and socioeconomic factors associated with obesity among different sex and age groups in an urban area of the Solomon Islands. In 2016, a cross-sectional study was conducted among adults aged 20 to 80 in Honiara, the capital of the Solomon Islands. Anthropometric measurements and a survey of socioeconomic status (SES) and behavioral status were conducted among 176 participants using a questionnaire. Multiple linear regression analysis was used to identify the socioeconomic factors significantly associated with higher body mass index (BMI) by age group. The study found a high prevalence of overweight (34%) and obesity (48%) in both sexes. Multiple linear regression analysis found that having a high-income level and being married were positively associated with higher BMI among young adults. In the middle age groups, the highest income level was positively associated with higher BMI. Young and middle-aged adults with a high SES might consume higher calorie food, contributing to weight gain, but this needs confirmation. Moreover, getting married might lead to more consistent meals and weight gain among the young age group. These findings suggest that health professionals have to consider the influence of income level and marital status on lifestyle choices when planning interventions that promote healthy lifestyles.

  Last, Feb. 2021, Hawai`i Journal of Health and Social Welfare, 80(2) (2), 24 - 32, English, International magazine

  [Refereed]

  Scientific journal


• The comparison of ambulatory activity among people living in different regions, and relationship with BMI in Pohnpei state, the Federated States of Micronesia: Cross-sectional study

  Moeno Sakai, Minato Nakazawa, Delpihn Abraham

  Elsevier {BV}, Dec. 2020, Obesity Medicine, 20, 100297 - 100297, English

  [Refereed]

  Scientific journal


• Admixture and natural selection shaped genomes of an Austronesian-speaking population in the Solomon Islands

  Mariko Isshiki, Izumi Naka, Yusuke Watanabe, Nao Nishida, Ryosuke Kimura, Takuro Furusawa, Kazumi Natsuhara, Taro Yamauchi, Minato Nakazawa, Takafumi Ishida, Ricky Eddie, Ryutaro Ohtsuka, Jun Ohashi

  Springer Science and Business Media LLC, Dec. 2020, Scientific Reports, 10(1) (1)

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Factors Associated with Smoking and Drinking among Early Adolescents in Vanuatu: A Cross-Sectional Study of Adolescents and Their Parents.

  Emi Nakaseko, Sayaka Kotera, Minato Nakazawa

  This cross-sectional study determined whether various factors, such as parental behavior, attitude, and knowledge and sibling and peer behaviors, were associated with smoking and drinking among early adolescents in the Republic of Vanuatu. For this purpose, logistic regression analysis was used to determine the relative importance of the factors as well as the influences of the parents/guardians, siblings, and peers. The participants consisted of 157 seventh- and eighth-grade adolescents (mean age = 13.3 years; 52.2% girls), including their parents/guardians, from three public schools in Vanuatu. According to the results, the proportions of smokers and drinkers among the adolescents were 12.7% each, while the majority of the parents/guardians disapproved of underage smoking and drinking. In addition, peer influences (i.e., regularly smoking and/or drinking and offering tobacco and/or alcohol) was significantly associated with ever smoking and drinking, whereas parental and sibling influences did not have a significant impact on ever smoking and drinking. In sum, being given tobacco or alcohol from peers had the strongest association with ever smoking and drinking among the adolescents in this study. Thus, future school-based intervention programs should focus on enhancing early adolescents' life skills, including the ability to resist offers of tobacco and/or alcohol from their peers.

  Nov. 2020, International journal of environmental research and public health, 17(22) (22), English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Health and Diet among People Living in an Isolated Area: Case Study of Pingelap Island in Pohnpei State, the Federated States of Micronesia.

  Moeno Sakai, Minato Nakazawa, Delpihn Abraham

  Pingelap Island in Pohnpei state is geographically isolated as the nearest island is 70 km away, and such geographical isolation is a challenge for public health due to the limited access to health services. This study aims to reveal the health situation on the island and investigate the influence of geographical isolation on health and diet. For that purpose, the result was compared with those who are living in a community on the main island of Pohnpei state (Mand) with the same ethnic background. Face-to-face interviews were conducted to collect data on demographics, diet, and behavior. Anthropometry and blood pressure measurements were also taken. A total of 98 (Pingelap = 50; Mand = 48) subjects participated in the study. The result showed that females, in particular, had a high prevalence of obesity (80.0% in Pingelap; 75.9% in Mand). However, no significant regional difference was found in both BMI and blood pressure, regardless of gender. Regarding diet, although the geographical location impacted food availability, the consumption of major imported foods did not show a significant regional difference. In conclusion, the geographical isolation did not significantly influence health and diet, but the majority of the study population displayed a high-risk burden of non-communicable diseases.

  Oct. 2020, International journal of environmental research and public health, 17(21) (21), English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Long-Lasting Effects of the 2013 Yolanda Typhoon on Overall Health of Mothers and Children

  Hanna Horiguchi, Minato Nakazawa

  Three years after the 2013 Yolanda Typhoon, this study sought to determine the factors associated with the stress of the affected mothers and the health of the children on Leyte island, and the preparedness of the community to mitigate future potential disasters. Three hundred mothers with children from 0 to 7 years old were selected through convenience sampling, structured interviews conducted using the Hurricane-Related Traumatic Experiences questionnaire and the PTSD (post-traumatic stress disorder) Checklist 5 (PCL5), and the children’s weights and heights were measured. The provisional PTSD prevalence was found to be 53.3% 3 y after Yolanda. The multiple regression analysis with multiple imputation for the missing values found that housing and childcare attitudes were significantly associated with preparedness. This study concluded that living in multistoried houses was useful for disaster mitigation and that the caregiving responsibility for their children could be a disaster preparedness motivation for mothers.

  Last, Cambridge University Press (CUP), Apr. 2020, Disaster Medicine and Public Health Preparedness, 15(3) (3), 1 - 8, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Erratum: Correction to: Reduced Serum Selenium Concentration in Miscarriage Incidence of Indonesian Subjects (Biological trace element research (2013) 154 1 (1-6))

  Rizky Abdulah, Herlambang Herlambang, Leri Septiani, Mutakin, Irma R. Defi, Eka W. Suradji, Irma M. Puspitasari, Melisa I. Barliana, Chiho Yamazaki, Minato Nakazawa, Hiroshi Koyama

  NLM (Medline), Jul. 2019, Biological trace element research, 190(1) (1), 282, English

  Scientific journal


• Epidemiological and spatial factors for tuberculosis: a matched case-control study in Nagata, Japan

  R. Murakami, N. Matsuo, K. Ueda, M. Nakazawa

  SETTING AND OBJECTIVE: Several studies have found a significant association between tuberculosis (TB) and spatial factors. We wished to determine the effect of host-related factors and spatial factors associated with an increased risk of TB, and to assess spatial clustering. DESIGN: A hospital-based case-control study using medical records was conducted. A total of 103 age- and sex-matched TB patients (cases) and 299 patients without TB (controls) were recruited from January 2000 to December 2016 in a hospital in Nagata, Kobe, Japan. Logistic regression, kernel density estimation, Cross L function and a Poisson regression model were applied. RESULTS: The epidemiological factors associated with TB were being a health care worker (OR 10.1) and lower serum albumin level (OR 0.5). Spatial analyses revealed TB to be positively associated with population density (risk ratio [RR] 32.1), the proportion of single households (RR -1.85) and persons aged 65 years (RR 2.65) and one spatial clustering. CONCLUSION: Our findings could help in the identification of high TB risk individuals and districts.

  Last, International Union Against Tuberculosis and Lung Disease, Feb. 2019, The International Journal of Tuberculosis and Lung Disease, 23(2) (2), 181 - 186, English, International magazine

  [Refereed]

  Scientific journal


• Association between Depressive State and Lifestyle Factors among Residents in a Rural Area in Japan: A Cross-Sectional Study

  Yuri Murayama, Ken Inoue, Chiho Yamazaki, Satomi Kameo, Minato Nakazawa, Hiroshi Koyama

  For the prevention of suicides, the early detection of depression symptoms and the implementation of suicide prevention measures based on the local community's conditions are critical. In rural or remote communities with poor access to urban areas, the medical care is often insufficient. We conducted the present study to investigate the relationship between depressive state and social-environmental factors in a depopulated inland rural area in central Japan, where the suicide rate is high and specialized psychiatric care is not available. Using a correspondence analysis, logistic regression analysis, and structural equation modeling (SEM), we examined the questionnaire responses of 912 residents (average 60.5 years old). Total Health Index-Depression (THI-D) scale scores were used to measure depressive state. The lifestyle-related factor with the strongest link to depressive state was 'concerns about interpersonal relationships' (OR = 2.7, 95% CI: 2.06-3.53, p < 0.0001), whereas financial concerns, number of friends, exercise habits, and perceived amount of sleep were also useful for predicting depressive state. The SEM showed that one's job and private life, particularly concerns about interpersonal relationships, are correlated with higher THI-D scores. Thus, social and lifestyle factors (e.g., concerns about interpersonal relationships and financial situation) can be used to predict depressive state in a depopulated rural area, and the newly revealed order in which depressive symptoms manifest is important. Our findings can be used to advance assessments of depressive symptoms and will be useful for mental health and suicide prevention.

  Tohoku University Medical Press, 2019, The Tohoku Journal of Experimental Medicine, 249(2) (2), 101 - 111, English, Domestic magazine

  [Refereed]

  Scientific journal


• Association of an intronic SNP of the EFEMP1 gene with height in Tongans

  Mariko Isshiki, Izumi Naka, Nao Nishida, Takuro Furusawa, Ryosuke Kimura, Kazumi Natsuhara, Taro Yamauchi, Minato Nakazawa, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka, Jun Ohashi

  Elsevier BV, Sep. 2018, Meta Gene, 17, 172 - 176, English

  [Refereed]

  Scientific journal


• Impact of a massive earthquake on adherence to antiretroviral therapy, mental health, and treatment failure among people living with HIV in Nepal

  Bharat Singh Negi, Sunil Kumar Joshi, Minato Nakazawa, Tomohiro Kotaki, Anup Bastola, Masanori Kameoka

  Public Library of Science, Jun. 2018, PLoS ONE, 13(6) (6), e0198071, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Association study of CREBRF missense variant (rs373863828:G > A; p.Arg457Gln) with levels of serum lipid profile in the Pacific populations

  Jun Ohashi, Izumi Naka, Takuro Furusawa, Ryosuke Kimura, Kazumi Natsuhara, Taro Yamauchi, Minato Nakazawa, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka

  Informa UK Limited, Apr. 2018, Annals of Human Biology, 45(3) (3), 215 - 219, English

  [Refereed]

  Scientific journal


• The Factors Associated with the Delayed First Antenatal Care in the Philippines

  Hanna Horiguchi, Minato Nakazawa

  Horizon Research Publishing Co., Ltd., Mar. 2018, Universal Journal of Public Health, 6(2) (2), 49 - 55, English

  [Refereed]

  Scientific journal


• What is needed to realize universal "health" coverage? The meaning of health revisited.

  Nakazawa M, Moji K

  2018, Journal of Global Health Reports, 2, e2018021, English

  [Refereed]

  Scientific journal


• Agricultural workers in a cohort of middle-aged Japanese women showed better health status than did women with other occupations

  Iijima H, Suzuki S, Koyama H, Nakazawa M, Wakimoto Y

  2018, Journal of Rural Medicine, 13(1) (1), 57 - 63, English

  [Refereed]

  Scientific journal


• Mitochondrial DNA variations in Austronesian-speaking populations living in the New Georgia Islands, the Western Province of the Solomon Islands

  Mariko Issiki, Izumi Naka, Ryosuke Kimura, Takuro Furusawa, Kazumi Natsuhara, Taro Yamauchi, Minato Nakazawa, Takafumi Ishida, Ryutaro Ohtsuka, Jun Ohashi

  Springer Science and Business Media LLC, Jan. 2018, Journal of Human Genetics, 63(1) (1), 101 - 104, English

  [Refereed]

  Scientific journal


• A missense variant, rs373863828-A (p.Arg457Gln), of CREBRF and body mass index in Oceanic populations

  Izumi Naka, Takuro Furusawa, Ryosuke Kimura, Kazumi Natsuhara, Taro Yamauchi, Minato Nakazawa, Yuji Ataka, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka, Jun Ohashi

  Sep. 2017, JOURNAL OF HUMAN GENETICS, 62(9) (9), 847 - 849, English

  [Refereed]

  Scientific journal


• Socio-environmental and behavioral risk factors associated with obesity in the capital (Honiara), the Solomon Islands; case-control study

  Chihiro Tsuchiya, Samo Tagini, Donald Cafa, Minato Nakazawa

  Elsevier {BV}, Sep. 2017, Obesity Medicine, 7, 34 - 42, English

  [Refereed]

  Scientific journal


• Genotypic Characterization of Human Immunodeficiency Virus Type 1 Derived from Antiretroviral Drug-Treated Individuals Residing in Earthquake-Affected Areas in Nepal

  Bharat Singh Negi, Tomohiro Kotaki, Sunil Kumar Joshi, Anup Bastola, Minato Nakazawa, Masanori Kameoka

  Sep. 2017, AIDS RESEARCH AND HUMAN RETROVIRUSES, 33(9) (9), 960 - 965, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Polymorphisms associated with a tropical climate and root crop diet induce susceptibility to metabolic and cardiovascular diseases in Solomon Islands

  Takuro Furusawa, Izumi Naka, Taro Yamauchi, Kazumi Natsuhara, Ricky Eddie, Ryosuke Kimura, Minato Nakazawa, Takafumi Ishida, Ryutaro Ohtsuka, Jun Ohashi

  Mar. 2017, PLOS ONE, 12(3) (3), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Lifestyle-related factors for obesity among community-dwelling adults in Bangkok, Thailand.

  Tsuchiya C, Amnatsatsue K, Sirikulchayanonta C, Kerdmongkol P, Nakazawa Minato

  2017, Journal of International Health., 32(1) (1), 9 - 16, English

  [Refereed]

  Scientific journal


• A STUDY OF THE ASSOCIATION BETWEEN SELENIUM AND CARDIOVASCULAR DISEASE IN LAMPUNG, INDONESIA

  Mutakin, Ida F. Rivai, Andi Setiawan, Rizky Abdulah, Kenji Kobayashi, Chiho Yamazaki, Satomi Kameo, Minato Nakazawa, Hiroshi Koyama

  Mar. 2016, SOUTHEAST ASIAN JOURNAL OF TROPICAL MEDICINE AND PUBLIC HEALTH, 47(2) (2), 299 - 308, English

  [Refereed]

  Scientific journal


• オセアニア集団におけるUCP1遺伝子―3820A/G多型と身長・体重との関連

  中伊津美, 西田奈央, 古澤拓郎, 木村亮介, 山内太郎, 夏原和美, 中澤港, 安高雄治, 稲岡司, 松村康弘, 大塚柳太郎, 大橋順

  2015, 日本人類遺伝学会大会プログラム・抄録集, 60th, 286, Japanese


• Evaluation of disaster preparedness training and disaster drill for nursing students

  Syahirul Alim, Masato Kawabata, Minato Nakazawa

  Jan. 2015, NURSE EDUCATION TODAY, 35(1) (1), 25 - 31, English

  [Refereed]

  Scientific journal


• オセアニア集団におけるFAAH遺伝子Pro129Thr多型とBMIとの関連

  中伊津美, 西田奈央, 古澤拓郎, 木村亮介, 山内太郎, 夏原和美, 中澤港, 安高雄治, 石田貴文, 稲岡司, 松村康弘, 大塚柳太郎, 大橋順

  2014, 日本遺伝子診療学会大会プログラム・抄録集, 21st, 322, Japanese


• A functional SNP upstream of the beta-2 adrenergic receptor gene (ADRB2) is associated with obesity in Oceanic populations

  I. Naka, K. Hikami, K. Nakayama, M. Koga, N. Nishida, R. Kimura, T. Furusawa, K. Natsuhara, T. Yamauchi, M. Nakazawa, Y. Ataka, T. Ishida, T. Inaoka, S. Iwamoto, Y. Matsumura, R. Ohtsuka, N. Tsuchiya, J. Ohashi

  Sep. 2013, INTERNATIONAL JOURNAL OF OBESITY, 37(9) (9), 1204 - 1210, English

  [Refereed]

  Scientific journal


• Reduced serum selenium concentration in miscarriage incidence of indonesian subjects

  Rizky Abdulah, Herlambang Noerjasin, Leri Septiani, Mutakin, Irma R. Defi, Eka W. Suradji, Irma M. Puspitasari, Melisa I. Barliana, Chiho Yamazaki, Minato Nakazawa, Hiroshi Koyama

  Jul. 2013, Biological Trace Element Research, 154(1) (1), 1 - 6, English

  [Refereed]

  Scientific journal


• Association between selenium nutritional status and metabolic risk factors in men with visceral obesity.

  Mutakin, Anna Meiliana, Andi Wijaya, Kenji Kobayashi, Chiho Yamazaki, Satomi Kameo, Minato Nakazawa, Hiroshi Koyama

  BACKGROUND AND AIM: Previous evidence has suggested an association between selenium and cardiovascular disease, which is main outcome of metabolic syndrome. The aim of this study was to examine possible correlation between selenium nutritional status and metabolic risk factors in men with visceral obesity. METHODS: Plasma samples were collected from 123 Indonesian men with visceral obesity. Their metabolic risk factors and selenium nutritional status were analyzed. The eligible subjects (n=78) were stratified according to the International Diabetes Federation: obese, obese plus one component, and obese plus two components or more. Obese plus two components or more were diagnostic criteria of metabolic syndrome. Pearson's correlation was performed to examine the correlation in each group. RESULTS: In the obese group, selenium positively correlated with high-density lipoprotein (HDL) cholesterol (r=0.390, P<0.05) and with fatty acid binding protein-4 (FABP4) (r=0.474, P<0.05); glutathione peroxidase-3 (GPx3) activity was inversely correlated with FABP4 (r=-467, P<0.05). In the obese plus one component group, GPx3 activity positively correlated with HDL cholesterol (r=0.413, P<0.05). In the metabolic syndrome group, selenium negatively correlated with monocytes chemoattractant protein (MCP)-1 (r=-0.429, P<0.05). CONCLUSIONS: These results show that the association between selenium nutritional status and metabolic risk factors is limited to particular group of obese men with or without metabolic syndrome.

  Apr. 2013, Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS), 27(2) (2), 112 - 6, English, International magazine

  [Refereed]

  Scientific journal


• Geographical and gender differences in the impacts of education, occupation and psychological factors on mortality risk in a middle-aged japanese cohort

  Hisaka Iijima, Tetsuo Sakamaki, Minato Nakazawa, Hiroshi Koyama, Shosuke Suzuki

  Mar. 2013, Kitakanto Medical Journal, 63(1) (1), 21 - 32, English

  [Refereed]

  Scientific journal


• Hypertension-susceptibility gene prevalence in the Pacific Islands and associations with hypertension in Melanesia

  Takuro Furusawa, Izumi Naka, Taro Yamauchi, Kazumi Natsuhara, Ricky Eddie, Ryosuke Kimura, Minato Nakazawa, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Yuji Ataka, Ryutaro Ohtsuka, Jun Ohashi

  Springer Science and Business Media LLC, Mar. 2013, Journal of Human Genetics, 58(3) (3), 142 - 149, English

  [Refereed]

  Scientific journal


• DRD4 VNTR polymorphism in Oceanic populations

  Izumi Naka, Jun Ohashi, Ryosuke Kimura, Takuro Furusawa, Taro Yamauchi, Minato Nakazawa, Kazumi Natsuhara, Yuji Ataka, Nao Nishida, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka

  Aug. 2012, ANTHROPOLOGICAL SCIENCE, 120(2) (2), 151 - 155, English

  [Refereed]

  Scientific journal


• Relationship between Depressive State and Lifestyle Factors in a Rural Area in Gunma Prefecture: An Analysis of 'Kokoro Check Sheet' Using Structural Equation Modeling

  Yuri Murayama, Rinko Yamamoto, Miho Yamaguchi, Chiho Yamazaki, Minato Nakazawa, Hiroshi Koyama

  2012, Kitakanto Medical Journal, 62(1) (1), 41 - 51, Japanese

  [Refereed]

  Scientific journal


• Selenium-induced apoptosis-like cell death in Plasmodium falciparum

  Eka W. Suradji, Toshimitsu Hatabu, Kenji Kobayashi, Chiho Yamazaki, Rizky Abdulah, Minato Nakazawa, Junko Nakajima-Shimada, Hiroshi Koyama

  Dec. 2011, PARASITOLOGY, 138(14) (14), 1852 - 1862, English

  [Refereed]

  Scientific journal


• Acute Phase Response of Selenium Status and Glutathione Peroxidase Activity in Blood Plasma Before and After Total Knee Arthroplasty Surgery

  Irma Ruslina Defi, Chiho Yamazaki, Satomi Kameo, Kenji Kobayashi, Minato Nakazawa, Yanagisawa Shinya, Naoki Sato, Naoki Wada, Kenji Shirakura, Hiroshi Koyama

  Dec. 2011, BIOLOGICAL TRACE ELEMENT RESEARCH, 144(1-3) (1-3), 388 - 395, English

  [Refereed]

  Scientific journal


• The Serum Leptin Level and Body Mass Index in Melanesian and Micronesian Solomon Islanders: Focus on Genetic Factors and Urbanization

  Takuro Furusawa, Izumi Naka, Taro Yamauchi, Kazumi Natsuhara, Ryosuke Kimura, Minato Nakazawa, Takafumi Ishida, Nao Nishida, Ricky Eddie, Ryutaro Ohtsuka, Jun Ohashi

  Jul. 2011, AMERICAN JOURNAL OF HUMAN BIOLOGY, 23(4) (4), 435 - 444, English

  Scientific journal


• Health status and lifestyle factors as predictors of depression in middle-aged and elderly Japanese adults: a seven-year follow-up of the Komo-Ise cohort study

  Hisashi Tanaka, Yosiaki Sasazawa, Shosuke Suzuki, Minato Nakazawa, Hiroshi Koyama

  Feb. 2011, BMC PSYCHIATRY, 11(20) (20), English

  [Refereed]

  Scientific journal


• Editor's Postscript Vol. 61 (2010), No. 1

  Nakazawa Minato

  The Kitakanto Medical Society, 2011, The KITAKANTO Medical Journal, 61(1) (1), 117 - 117


• Impact of Ethnic Conflict on the Nutritional Status and Quality of Life of Suburban Villagers in the Solomon Islands

  Taro Yamauchi, Minato Nakazawa, Hiroshi Ohmae, Kiseko Kamei, Kanae Sato, Bernard Bakote'e

  Aug. 2010, JOURNAL OF NUTRITIONAL SCIENCE AND VITAMINOLOGY, 56(4) (4), 227 - 234, English

  Scientific journal


• The Q223R polymorphism in LEPR is associated with obesity in Pacific Islanders

  Takuro Furusawa, Izumi Naka, Taro Yamauchi, Kazumi Natsuhara, Ryosuke Kimura, Minato Nakazawa, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Yuji Ataka, Nao Nishida, Naoyuki Tsuchiya, Ryutaro Ohtsuka, Jun Ohashi

  Mar. 2010, HUMAN GENETICS, 127(3) (3), 287 - 294, English

  Scientific journal


• Factor analysis of the kokoro check sheet (KCS)-Newly developed questionnaire for depression screening-

  Miho Yamaguchi, Yuri Murayama, Rinko Onda, Michiyo Mitsuhashi, Ciho Yamazaki, Minato Nakazawa, Hiroshi Koyama

  Sep. 2009, Kitakanto Medical Journal, 59(3) (3), 231 - 240, Japanese

  [Refereed]

  Scientific journal


• Factor analysis of the kokoro check sheet (KCS)-Newly developed questionnaire for depression screening-

  Miho Yamaguchi, Yuri Murayama, Rinko Onda, Michiyo Mitsuhashi, Ciho Yamazaki, Minato Nakazawa, Hiroshi Koyama

  Sep. 2009, Kitakanto Medical Journal, 59(3) (3), 231 - 240, Japanese

  Scientific journal


• Can an individualized and comprehensive care strategy improve urinary incontinence (UI) among nursing home residents?

  Yukiko Tanaka, Kumiko Nagata, Tomoe Tanaka, Koichi Kuwano, Hidetoshi Endo, Tetsuya Otani, Minato Nakazawa, Hiroshi Koyama

  Sep. 2009, ARCHIVES OF GERONTOLOGY AND GERIATRICS, 49(2) (2), 278 - 283, English

  Scientific journal


• 喫煙と流産 血清セレン濃度との関連

  アブドゥラ・リズキー, ヌルヤシン・ヘルランバン, デフィ・イルマ・ルスリナ, ムタキン・ムタキン, スラジ・エカ・ウィドリアン, 小林 健司, 山崎 千穂, 亀尾 聡美, 中澤 港, 小山 洋

  日本微量元素学会, Jun. 2009, Biomedical Research on Trace Elements, 20(2) (2), 181 - 181, English

  [Refereed]


• The Pacific lineage (2E) of JC polyomavirus is prevalent in Sumba Island, Eastern Indonesia

  Hiroshi Ikegaya, Zhong Shan, Hana Shimizu, Makiko Sekiyama, Augustinus Soemantri, Takafumi Ishida, Minato Nakazawa, Ryutaro Ohtsuka, Tomokazu Takasaka, Ayako Shibuya, Tadaichi Kitamura, Yoshiaki Yogo

  Aug. 2008, ANTHROPOLOGICAL SCIENCE, 116(2) (2), 183 - 186, English

  Scientific journal


• Gene flow and natural selection in Oceanic human populations inferred from genome-wide SNP typing

  Ryosuke Kimura, Jun Ohashi, Yasuhiro Matsumura, Minato Nakazawa, Tsukasa Inaoka, Ryutaro Ohtsuka, Motoki Osawa, Katsushi Tokunaga

  Aug. 2008, MOLECULAR BIOLOGY AND EVOLUTION, 25(8) (8), 1750 - 1761, English

  Scientific journal


• マラリア原虫Plasmodium falciparumに対する無機セレン化合物の抗マラリア活性についての検討(Inorganic selenium parasiticidal effect on human malaria parasite Plasmodium falciparum in vitro)

  スラジ・エカ, 畑生 俊光, 小林 健司, アブドゥラ・リズキー, 中澤 港, 嶋田 淳子, 小山 洋

  日本微量元素学会, Jun. 2008, Biomedical Research on Trace Elements, 19(2) (2), 214 - 214, English

  [Refereed]


• Prognostic value of serial cardiac I-123-MIBG Imaging in patients with stabilized chronic heart failure and reduced left ventricular ejection fraction

  Shu Kasama, Takuji Toyama, Hiroyuki Sumino, Minato Nakazawa, Naoya Matsumoto, Yuichi Sato, Hisao Kurnakura, Yoshiaki Takayama, Shuichi Ichikawa, Tadashi Suzuki, Masahiko Kurabayashi

  Jun. 2008, JOURNAL OF NUCLEAR MEDICINE, 49(6) (6), 907 - 914, English

  Scientific journal


• A scan for genetic determinants of human hair morphology: EDAR is associated with Asian hair thickness

  Akihiro Fujimoto, Ryosuke Kimura, Jun Ohashi, Kazuya Omi, Rika Yuliwulandari, Lilian Batubara, Mohammad Syamsul Mustofa, Urai Samakkarn, Wannapa Settheetham-Ishida, Takafumi Ishida, Yasuyuki Morishita, Takuro Furusawa, Minato Nakazawa, Ryutaro Ohtsuka, Katsushi Tokunaga

  Mar. 2008, HUMAN MOLECULAR GENETICS, 17(6) (6), 835 - 843, English

  Scientific journal


• マラリア対策の進捗による感染状況の変化とフィールドでの迅速診断キットの限界

  大前比呂思, 亀井喜世子, 中澤港, BAKOTE’E Bernard

  Feb. 2008, Clin Parasitol, 18(1) (1), 76 - 79, Japanese


• Population structure and natural selection in Oceanic human populations

  Kimura Ryosuke, Ohashi Jun, Matsumura Yasuhiro, Nakazawa Minato, Inaoka Tsukasa, Ohtsuka Ryutaro, Tokunaga Katsushi

  Dec. 2007, GENES & GENETIC SYSTEMS, 82(6) (6), 541

  [Refereed]


• FTO polymorphisms in oceanic populations

  Jun Ohashi, Izumi Naka, Ryosuke Kimura, Kazumi Natsuhara, Taro Yamauchi, Takuro Furusawa, Minato Nakazawa, Yuji Ataka, Jintana Patarapotikul, Pornlada Nuchnoi, Katsushi Tokunaga, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka

  Dec. 2007, JOURNAL OF HUMAN GENETICS, 52(12) (12), 1031 - 1035, English

  Scientific journal


• 前立腺癌予防の可能性 セレンによる前立腺がん予防

  小山洋, 中澤港, 大谷哲也, 勝矢陽子, 小林健司, ABDULAH Rizky

  医学図書出版(株), Dec. 2007, 泌尿器外科, 20(12) (12), 1507 - 1515, Japanese


• Middle-aged and elderly outpatients show lower body temperature responses than the young, even with the same C-reactive protein levels

  A. Hoshino, J. Tamura, M. Nakazawa, H. Koyama

  May 2007, JOURNAL OF INTERNATIONAL MEDICAL RESEARCH, 35(3) (3), 329 - 337, English

  [Refereed]

  Scientific journal


• 遺伝および環境要因と思春期の成長,栄養状態‐南太平洋ソロモン諸島の3集団の比較‐

  山内太郎, 石森大知, 中澤港, 河辺俊雄, 大塚柳太郎

  日本成長学会, Apr. 2007, 日本成長学会雑誌, 13(1) (1), 27 - 37, Japanese


• Estimate of Heavy Ion Radiotherapy Candidates in Gunma Prefecture : 2. Annual Cancer Incidence in Gunma Prefecture and Projected Number of Heavy Ion Radiotherapy Candidates

  Yoichiro Shinohara, Izumu Hasegawa, Minato Nakazawa, Hiroshi Koyama, Fumitaka Mogi

  2007, Kitakanto Medical Journal, 57(1) (1), 153 - 154, English

  Scientific journal


• 遺伝および環境要因と思春期の成長，栄養状態－南太平洋ソロモン諸島の3集団の比較－.

  山内太郎, 石森大知, NAKAZAWA MINATO, 河辺俊雄, 大塚柳太郎

  日本成長学会, 2007, 成長学会誌, 13(1) (1), 27 - 37, Japanese

  [Refereed]

  Scientific journal


• The Long-Term Psychological Impact of Ethnic Tension in Adolescents of the Solomon Islands

  UTSUMI TAKAKO, NAKAZAWA MINATO, KAWABATA MASATO

  Objective
  The purpose of this study was to assess the psychological impact and associated factors in adolescents 5 years after the ethnic tension in the Solomon Islands.
  Methods
  In total, 199 high school students and villagers from Guadalcanal province and Malaita province participated in this study. To examine the psychological impact of the ethnic tension, a semi-structured interview was performed using a questionnaire and the Impact of Event Scale Revised (IES-R) for posttraumatic stress disorders (PTSD) symptoms. The participants were divided into three groups according to the places (A, B, C) where the participants lived at the beginning of the ethnic tension.
  Results
  Recalled emotions of traumatic experiences were significantly more severe in the most affected areas (group A, B). Although previous studies showed females are more emotionally impacted than males in disaster, the emotional impact was significantly more frequent in males than females in this study. Especially, the IES-R score was significantly higher in males of group A. No differences were found in the IES-R scores among the three groups; A: 33.4, B: 30.0, C: 34.5. The adolescents in this study had higher IES-R scores.
  Conclusions
  This study indicates that the PTSD symptoms of the adolescents have persisted for 5 years after the ethnic tension in the Solomon Islands.

  JAPAN ASSOCIATION FOR INTERNATIONAL HEALTH, 2007, 国際保健医療, 22(2) (2), 89-94 (J-STAGE) - 94, English


• The long-term psychological impact of ethnic tension in adolescents of the Solomon Islands

  Utsumi T, Nakazawa Minato

  Objective
  The purpose of this study was to assess the psychological impact and associated factors in adolescents 5 years after the ethnic tension in the Solomon Islands.
  Methods
  In total, 199 high school students and villagers from Guadalcanal province and Malaita province participated in this study. To examine the psychological impact of the ethnic tension, a semi-structured interview was performed using a questionnaire and the Impact of Event Scale Revised (IES-R) for posttraumatic stress disorders (PTSD) symptoms. The participants were divided into three groups according to the places (A, B, C) where the participants lived at the beginning of the ethnic tension.
  Results
  Recalled emotions of traumatic experiences were significantly more severe in the most affected areas (group A, B). Although previous studies showed females are more emotionally impacted than males in disaster, the emotional impact was significantly more frequent in males than females in this study. Especially, the IES-R score was significantly higher in males of group A. No differences were found in the IES-R scores among the three groups; A: 33.4, B: 30.0, C: 34.5. The adolescents in this study had higher IES-R scores.
  Conclusions
  This study indicates that the PTSD symptoms of the adolescents have persisted for 5 years after the ethnic tension in the Solomon Islands.

  JAPAN ASSOCIATION FOR INTERNATIONAL HEALTH, 2007, Journal of International Health, 22(2) (2), 89 - 94, English

  [Refereed]

  Scientific journal


• Effect of sodium selenite supplementation on the levels of Prostacyclin I-2 and Thromboxane A(2) in human

  Rizky Abdulah, Yoko Katsuya, Kenji Kobayashi, Minato Nakazawa, Misa Nara, Masami Murakami, Hiroshi Koyama

  2007, THROMBOSIS RESEARCH, 119(3) (3), 305 - 310, English

  Scientific journal


• HLA-DRB1 polymorphism on Ha'ano island of the Kingdom of Tonga

  Ohashi Jun, Naka Izumi, Kimura Ryosuke, Tokunaga Katsushi, Nakazawa Minato, Ataka Yuji, Ohtsuka Ryutaro, Inaoka Tsukasa, Matsumura Yasuhiro

  Dec. 2006, ANTHROPOLOGICAL SCIENCE, 114(3) (3), 193 - 198, English

  [Refereed]


• Brief communication: Mitochondrial DNA variation suggests extensive gene flow from Polynesian ancestors to indigenous Melanesians in the Northwestern Bismarck Archipelago

  Jun Ohashi, Izumi Naka, Katsushi Tokunaga, Tsukasa Inaoka, Yuji Ataka, Minato Nakazawa, Yasuhiro Matsumura, Ryutaro Ohtsuka

  Aug. 2006, AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY, 130(4) (4), 551 - 556, English

  Scientific journal


• Polymorphisms in the ABO blood group gene in three populations in the New Georgia group of the Solomon Islands

  J Ohashi, Naka, I, R Kimura, K Tokunaga, T Yamauchi, K Natsuhara, T Furusawa, R Yamamoto, M Nakazawa, T Ishida, R Ohtsuka

  2006, JOURNAL OF HUMAN GENETICS, 51(5) (5), 407 - 411, English

  Scientific journal


• Low contribution of rice and vegetables to the daily intake of selenium in Japan

  R Abdulah, K Miyazaki, M Nakazawa, H Koyama

  Nov. 2005, INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION, 56(7) (7), 463 - 471, English

  Scientific journal


• Estimate of heavy ion radiotherapy candidates in Gunma Prefecture: 2. Annual cancer incidence in Gunma Prefecture and projected number of heavy ion radiotherapy candidates

  Yoichiro Shinohara, Izumu Hasegawa, Fumitaka Mogi, Minato Nakazawa, Hiroshi Koyama

  Aug. 2005, Kitakanto Medical Journal, 55(3) (3), 251 - 255, Japanese

  [Refereed]

  Scientific journal


• Estimate of heavy ion radiotherapy candidates in Gunma Prefecture: 1. Organ-specific indication rates based on quantitative evidence

  Izumu Hasegawa, Yoichiro Shinohara, Fumitaka Mogi, Minato Nakazawa, Hiroshi Koyama

  Aug. 2005, Kitakanto Medical Journal, 55(3) (3), 243 - 249, Japanese

  [Refereed]

  Scientific journal


• Estimate of heavy ion radiotherapy candidates in Gunma Prefecture: 2. Annual cancer incidence in Gunma Prefecture and projected number of heavy ion radiotherapy candidates

  Yoichiro Shinohara, Izumu Hasegawa, Fumitaka Mogi, Minato Nakazawa, Hiroshi Koyama

  Aug. 2005, Kitakanto Medical Journal, 55(3) (3), 251 - 255, Japanese

  Scientific journal


• Estimate of heavy ion radiotherapy candidates in Gunma Prefecture: 1. Organ-specific indication rates based on quantitative evidence

  Izumu Hasegawa, Yoichiro Shinohara, Fumitaka Mogi, Minato Nakazawa, Hiroshi Koyama

  Aug. 2005, Kitakanto Medical Journal, 55(3) (3), 243 - 249, Japanese

  Scientific journal


• Simulating the spread of Chlamidia trachomatis infection with an individual-based stochastic model: Evaluation of the effects of approval of low-dose oral contraceptive pill in Japan.

  Shoko Fukuyama, Minato Nakazawa, Ryutaro Ohtsuka

  The Japanese Society of Health and Human Ecology, 2005, Japanese Journal of Health and Human Ecology, 71(4) (4), 157 - 167, English

  [Refereed]

  Scientific journal


• Chemical forms of selenium for cancer prevention

  R Abdulah, K Miyazaki, M Nakazawa, H Koyama

  2005, JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY, 19(2-3) (2-3), 141 - 150, English


• Molecular polymorphism of ABO blood group gene in Austronesian and non-Austronesian populations in Oceania

  J. Ohashi, I. Naka, R. Ohtsuka, T. Inaoka, Y. Ataka, M. Nakazawa, K. Tokunaga, Y. Matsumura

  Apr. 2004, Tissue Antigens, 63(4) (4), 355 - 361, English

  Scientific journal


• Models of Malaria Transmission(Mathematical Models for Infectious Diseases)

  Nakazawa Minato

  The models of malaria transmission have been developed for a century. Based on the Ross-Macdonald model that treats patient increase rate and infectious mosquito increase rate as two differential equation, enormous extended models have been branched. Among them, the DMT model is important because it has established SEIR framework and because involves latent period and human immunity against malaria parasites. After the DMT, major extensions included (1) intervention, (2) age-structure of human population, (3) heterogeneity of environmental settings, (4) asymptomatic infection in endemic area, (5) effect of human behavior, (6) interaction between drug-tolerant malaria parasite and mass drug administration, and (7) circulation of multi-strain parasites in a host population. Most of those could catch the actual malaria transmission better than ever, but the difficulty of valid estimation of model parameters made them less general. Heterogeneity and variability of host populations are so important that the further extension of models should be done for human behavior and agent-based framework.

  The Japan Society for Industrial and Applied Mathematics, 2004, Bulletin of the Japan Society for Industrial and Applied Mathematics, 14(2) (2), 126 - 136, Japanese


• プライマリヘルスケアにかかわる高齢者の保健行動及び保健・医療システムに関わる日本と中国の国際比較研究

  NAKAZAWA MINATO, 小林敏生, 堤雅恵, 藤村孝枝, 王文西, 付朝輝

  2004, 山口県立大学学長企画室国際交流ワーキンググループプライマリヘルスケア班, Japanese

  Symposium


• Comparisons of health-related behavior and the system of health and medicine for the elderly between Japan and China from the viewpoint of Primary Health Care.

  NAKAZAWA MINATO, Toshio Kobayashi, Masae Tsutsumi, Takae Fujimura, WenXi Wang, ZhaoHui Fu

  2004, Primary Health Care Unit, International Cooperative Working Group (2001-2003), President's Planing Office, Yamaguchi Prefectural University., English

  Symposium


• Distribution of a 27-bp deletion in the band 3 gene in South Pacific islanders

  M Kimura, M Tamam, A Soemantri, M Nakazawa, Y Ataka, R Ohtsuka, T Ishida

  Dec. 2003, JOURNAL OF HUMAN GENETICS, 48(12) (12), 642 - 645, English

  [Refereed]

  Scientific journal


• Distribution of a 27-bp deletion in the band 3 gene in South Pacific islanders

  Masako Kimura, Moedrik Tamam, Augustinus Soemantri, Minato Nakazawa, Yuji Ataka, Ryutaro Ohtsuka, Takafumi Ishida

  2003, Journal of Human Genetics, 48(12) (12), 642 - 645, English

  [Refereed]

  Scientific journal


• 日本の年齢別出生力パタンのトレンドの分析

  NAKAZAWA MINATO

  Continuous reduction of fertility has been a focus of demographic problem in Japan. Most previous studies suggested that the reduction was mainly attributable to the increase of delayed or never married population, and that marital fertility itself did not decrease. Here I applied the Hadwiger's model and Coale and Trussel's model to the data of age-specific fertility and age-specific marital fertility in postwar Japan, and clarified some trends as cubic functions. Future projection based on these functions yielded different results due to the period of used data. When using the data after 1960, the projection suggests gradual increase of fertility.

  Yamaguchi Prefectural University, 2003, 山口県立大学看護学部紀要, 7:, 67 - 76, Japanese

  Research institution


• A new simple etiological model of human death.

  Yoichiro Mori, Minato Nakazawa

  There are two seemingly conflicting goals in modeling human death: to describe the actual survival curve accurately and to explain mortality in etiological terms. These two goals have never been achieved by a single model (Wood et al., 1992). Here we present a simple model of human death that successfully addresses both of these goals. We apply this model to the survival curves of France, Japan, Sweden and the United States thereby proving the goodness of fit of the model. The calculation results for Japan are shown to be fully explained in relation with the major changes in mortality trends the country has experienced.

  Population Association of Japan, 2003, The Journal of Population Studies (Jinko-Gaku-Kenkyu), 33, 27 - 39, English

  [Refereed]

  Scientific journal


• A new simple etiological model of human death.

  NAKAZAWA MINATO, 森洋一朗

  There are two seemingly conflicting goals in modeling human death: to describe the actual survival curve accurately and to explain mortality in etiological terms. These two goals have never been achieved by a single model (Wood et al., 1992). Here we present a simple model of human death that successfully addresses both of these goals. We apply this model to the survival curves of France, Japan, Sweden and the United States thereby proving the goodness of fit of the model. The calculation results for Japan are shown to be fully explained in relation with the major changes in mortality trends the country has experienced.

  Population Association of Japan, 2003, The Journal of Population Studies (Jinko-Gaku-Kenkyu), No.33, 27 - 39, English

  [Refereed]

  Scientific journal


• 地域社会での開発にかかわるイヴェント集

  NAKAZAWA MINATO, 大塚柳太郎

  2002, アジア・太平洋の環境・開発・文化, 5:, 3 - 88, Japanese

  Symposium


• 「イヴェント集」の活用例としてのマルチエージェントモデリング

  NAKAZAWA MINATO

  2002, アジア・太平洋の環境・開発・文化, 5:, 89 - 94, Japanese

  Symposium


• ソロモン諸島西部州の４つの村落における，尿試験紙による健康状態の評価

  NAKAZAWA MINATO

  2002, アジア・太平洋の環境・開発・文化, 4:, 1 - 10, Japanese

  Symposium


• Community health assessment by urine dipstick screening in relation to the variety of lifestyles in Solomon Islands.

  NAKAZAWA MINATO, 山内太郎, 田中求, 石森大知, 古澤拓郎, 緑川泰史, 大塚柳太郎

  Urine dipstick screening has clarified the overall health conditions of Melanesians who inhabit four less-modernized societies of Solomon Islands and shows that there is a slight inter-village difference in dietary conditions, which may be prognostic of health transitions in relatively modernized villages.

  Japanese Society for Oceanic Studies, 2002, People and Culture in Oceania, 18:, 33 - 44, English

  [Refereed]

  Scientific journal


• 書評：原 俊彦『狩猟社会から農耕社会へ−先史時代ワールドモデルの構築−』

  中澤 港

  2001, 人口学研究, 28: 43-45.


• Analysis of HLA-DRB1 polymorphism in the Gidra of Papua New Guinea

  J Ohashi, M Yoshida, R Ohtsuka, M Nakazawa, T Juji, K Tokunaga

  Apr. 2000, HUMAN BIOLOGY, 72(2) (2), 337 - 347, English

  [Refereed]

  Scientific journal


• Demographic Effects of Modernization in a Small Village of Solomon Islands

  Nakazawa Minato, Ishii Akira

  Interview-based micro-demographic survey was conducted to 187 residents in a village of 50km to the east of Honiara city, the capital of the Solomon Islands, to clarify the effect of modernization on the change of demographic profiles. Hazards analysis suggested upward tendency of fertility which might relate to improvement of nutritional status.

  Population Association of Japan, 2000, The Journal of Population Studies, 27, 7 - 13, English


• Serum biochemical data of the Gidra in Lowland Papua New Guinea: Consideration of their normal ranges

  Minato Nakazawa, Ryutaro Ohtsuka, Tetsuro Hongo, Tsukasa Inaoka, Toshio Kawabe, Tsuguyoshi Suzuki

  Carfax Publishing Company, 2000, Journal of Nutritional and Environmental Medicine, 10(2) (2), 153 - 162, English

  [Refereed]

  Scientific journal


• The Evaluation of Princeton Indices using Artificial Populations Generated by the Individual Population Model(Report)

  NAKAZAWA Minato

  Population Association of Japan, 1999, The Journal of Population Studies, 25, 55 - 57, Japanese


• Malaria Infection and Human Behavioral Factors: A Stochastic Model Analysis for Direct Observation Data in the Solomon Islands

  Minato Nakazawa, Hiroshi Ohmae, Akira Ishii, Judson Leafasia

  Wiley-Liss Inc., 1998, American Journal of Human Biology, 10(6) (6), 781 - 789, English

  [Refereed]

  Scientific journal


• Nutritional adaptation of people living in diversified environments of Papua New Guinea: Analytical approach of nutritional indicators using biological samples

  T Hongo, T Suzuki, T Inaoka, M Nakazawa, K Natsuhara, R Ohtsuka

  1998, RESEARCH IN HUMAN ECOLOGY: AN INTERDISCIPLINARY OVERVIEW, 143 - 162, English

  [Refereed]

  International conference proceedings


• Evaluating TFR and Completed Parity as Fertility Indices(Report)

  NAKAZAWA Minato, Ohtsuka Ryutaro

  Population Association of Japan, 1997, The Journal of Population Studies, 21, 61 - 63, Japanese


• Analysis of completed parity using microsimulation modeling

  Minato Nakazawa, Ryutaro Ohtsuka

  Taylor and Francis Ltd., 1997, Mathematical Population Studies, 6(3) (3), 173 - 186, English

  [Refereed]

  Scientific journal


• Nutritional status of trace elements in traditional populations inhabiting tropical lowland, Papua New Guinea

  T Hongo, R Ohtsuka, M Nakazawa, T Inaoka, T Suzuki

  1997, TRACE ELEMENTS IN MAN AND ANIMALS - 9, 120 - 122, English

  [Refereed]

  International conference proceedings


• Iron nutrition and anaemia in a malaria-endemic environment: Haematological investigation of the Gidra-speaking population in lowland Papua New Guinea

  Minato Nakazawa, Ryutaro Ohtsuka, Toshio Kawabe, Tetsuro Hongo, Tsukasa Inaoka, Tomoya Akimichi, Tsuguyoshi Suzuki

  Sep. 1996, British Journal of Nutrition, 76(3) (3), 333 - 346, English

  [Refereed]

  Scientific journal


• HLA‐DRB1 frequencies of non‐Austronesian‐speaking Gidra in south New Guinea and their genetic affinities with Oceanian populations

  Maki Yoshida, Ryutaro Ohtsuka, Minato Nakazawa, Takeo Juji, Katsushi Tokunaga

  1995, American Journal of Physical Anthropology, 96(2) (2), 177 - 181, English

  [Refereed]

  Scientific journal


• DIFFERENTIAL MALARIA PREVALENCE AMONG VILLAGES OF THE GIDRA IN LOWLAND PAPUA-NEW-GUINEA

  M NAKAZAWA, R OHTSUKA, T KAWABE, T HONGO, T SUZUKI, T INAOKA, T AKIMICHI, S KANO, M SUZUKI

  1994, TROPICAL AND GEOGRAPHICAL MEDICINE, 46(6) (6), 350 - 354, English

  [Refereed]

  Scientific journal


• Serum mineral and trace element concentrations in the gidra of lowland papua new guinea: Inter-village variation and comparison with the levels in developed countries

  Tetsuro Hongo, Ryutaro Ohtsuka, Minato Nakazawa, Toshio Kawabe, Tsukasa Inaoka, Tomoya Akimichl, Tsuguyoshi Suzuki

  1993, Ecology of Food and Nutrition, 29(4) (4), 307 - 318, English

  [Refereed]

  Scientific journal


• HTLV‐I, HIV‐I, and Hepatitis B and C Viruses in Western Province, Papua New Guinea: A Serological Survey

  Kazunari Yamaguchi, Tsukasa Inaoka, Ryutaro Ohtsuka, Tomoya Akimichi, Tetsuro Hongo, Toshio Kawabe, Minato Nakazawa, Makoto Futatsuka, Kiyoshi Takatsuki

  1993, Japanese Journal of Cancer Research, 84(7) (7), 715 - 719, English

  [Refereed]

  Scientific journal


• The hair-organ relationship in mercury concentration in contemporary japanese

  Tsuguyoshi Suzuki, Tetsuro Hongo, Jun Yoshinaga, Hideki Imai, Minato Nakazawa, Naoto Matsuo, Hirokatsu Akagi

  1993, Archives of Environmental Health, 48(4) (4), 221 - 229, English

  [Refereed]

  Scientific journal


• An Acute Mercuric Mercury Poisoning: Chemical Speciation of Hair Mercury Shows a Peak of Inorganic Mercury Value

  T. Suzuki, T. Hongo, N. Matsuo, H. Imai, M. Nakazawa, T. Abe, Y. Yamamura, M. Yoshida, H. Aoyama

  1992, Human & Experimental Toxicology, 11(1) (1), 53 - 57, English

  [Refereed]

  Scientific journal


• Lack of significantly positive correlations between elemental concentrations in hair and in organs

  Jun Yoshinaga, Hideki Imai, Minato Nakazawa, Tsuguyoshi Suzuki, Masatoshi Morita

  Dec. 1990, Science of the Total Environment, The, 99(1-2) (1-2), 125 - 135, English

  [Refereed]

  Scientific journal


• Application of inductively coupled plasma mass spectrometry (icp-ms) to multi-element analysis of human organs

  Jun Yoshinaga, Naoto Matsuo, Hideki Imai, Minato Nakazawa, Tsuguyoshi Suzuki

  Oct. 1990, International Journal of Environmental Analytical Chemistry, 41(1-2) (1-2), 27 - 38, English

  [Refereed]

  Scientific journal


• Interrelationship between the concentrations of some elements in the organs of Japanese with special reference to selenium-heavy metal relationships

  Jun Yoshinaga, Naoto Matsuo, Hideki Imai, Minato Nakazawa, Tsuguyoshi Suzuki, Masatoshi Morita, Hirokatsu Akagi

  1990, Science of the Total Environment, The, 91(C) (C), 127 - 140, English

  [Refereed]

  Scientific journal


• Determination of Trace Elements in Human Liver and Kidney by Inductively Coupled Plasma Mass Spectrometry

  Jun Yoshinaga, Minato Nakazawa, Tsuguyoshi Suzuki, Masatoshi Morita

  1989, Analytical Sciences, 5(3) (3), 355 - 358, English

  [Refereed]

  Scientific journal

• Human Ecology and Infectious Diseases

  Minato Nakazawa

  Lead, Sep. 2021, Japanese Journal of Health and Human Ecology, 87(5) (5), 209 - 213, Japanese

  [Invited]

  Introduction scientific journal


• Academic concerns on infodemic under the pandemic

  MInato Nakazawa

  Lead, Japanese Society of Health and Human Ecology, 31 May 2021, Japanese Journal of Health and Human Ecology, 87(3) (3), 97 - 99, Japanese

  [Invited]

  Introduction scientific journal


• 感染対策の数理モデル

  中澤 港

  Lead, Jan. 2021, 内科, 127(1) (1), Japanese

  [Invited]

  Introduction commerce magazine


• 研究室特別編：新型コロナ、本当のこと 神戸大学 中澤港

  川端,裕人

  May 2020, Webナショジオ, https://natgeo.nikkeibp.co.jp/atcl/web/19/050800015/, Japanese

  Introduction commerce magazine


• 出生における生物学的な見方―妊孕力に影響するさまざまな要因―

  中澤 港

  Sep. 2019, 保健の科学, 61(9) (9), 580 - 586, Japanese

  [Invited]

  Introduction scientific journal


• 生物人口学からみたヒトの寿命

  中澤 港

  Sep. 2019, 統計, 70(9) (9), 34 - 39, Japanese

  [Invited]

  Introduction commerce magazine


• 健康と寿命

  中澤 港

  2018, 学燈, 115(2) (2), 14 - 17, Japanese

  [Invited]

  Introduction commerce magazine


• Lifestyle-related factors for obesity among community-dwelling adults in Bangkok, Thailand

  Chihiro Tsuchiya, NAKAZAWA MINATO

  Japan Association for International Health, Mar. 2017, Journal of International Health, 32(1) (1), 9 - 16, English

  [Refereed]

  Report scientific journal


• Investigation of current situation of maternal and child health after typhoon Yolanda in Tacloban Philippines

  堀口範奈, 中澤港, 中澤港

  2017, 神戸大学都市安全研究センター研究報告(Web), (21) (21)


• Association of a non-synonymous variant in CREBRF with an increase in body mass index in Oceanic populations

  NAKA Izumi, FURUSAWA Takuro, KIMURA Ryosuke, NATSUHARA Kazumi, YAMAUCHI Taro, NAKAZAWA Minato, ATAKA Yuji, ISHIDA Takafumi, INAOKA Tsukasa, MATSUMURA Yasuhiro, OHTSUKA Ryutaro, OHASHI Jun

  2017, 日本人類遺伝学会大会プログラム・抄録集, 62nd, 243, English


• Excess thin and low fecundity

  NAKAZAWA MINATO

  医歯薬出版, 2015, 医学のあゆみ, 255(8) (8), 851 - 854, Japanese

  [Invited]

  Introduction commerce magazine


• Eco-health from the perspective of demography

  NAKAZAWA MINATO

  2014, 医学のあゆみ, 249(4) (4), 341 - 347, Japanese

  [Invited]

  Introduction commerce magazine


• Strategies for mitigation and adaptation in post-demographic transition society

  Kazuhiko Moji, NAKAZAWA MINATO, Yasuyuki Kono, Masahiro Umezaki

  2014, Journal of Health and Human Ecology, 80(1) (1), 60 - 67, Japanese

  [Refereed]

  Introduction scientific journal


• アジア‐環太平洋地域住民の骨密度から見る栄養状態

  萩原潤, 中澤港, 山内太郎, 石森大知, 中山優子, 河辺俊雄

  02 Nov. 2013, 日本国際保健医療学会学術大会プログラム・抄録集, 28th, (JA)255,(EN)101, Japanese


• 使えるデータをつくろう 2 データを活かすための統計学

  中澤港

  ブックハウス・エイチディ, 10 Jul. 2013, 月刊トレーニング・ジャーナル, 35(7) (7), 18 - 21, Japanese


• ダルーとトレス海峡諸島における結核蔓延状況調査

  村上理紗, 中澤港, 河辺俊雄

  02 Nov. 2012, 日本国際保健医療学会学術大会プログラム・抄録集, 27th, 123, Japanese


• ソロモン諸島のマラリア対策におけるArtemisinin‐based combination therapyの意義

  大前比呂思, 亀井喜世子, 中澤港, 山内太郎, PITAKAKA Freda, DRACY Andrew, BAKOTE’E Bernard

  Feb. 2012, 日本寄生虫学会大会プログラム・抄録集, 81st, 62, Japanese


• Relationship between Depressive State and Lifestyle Factors in a Rural Area in Gunma Prefecture: An Analysis of 'Kokoro Check Sheet' Using Structural Equation Modeling

  Yuri Murayama, Rinko Yamamoto, Miho Yamaguchi, Chiho Yamazaki, Minato Nakazawa, Hiroshi Koyama

  2012, Kitakanto Medical Journal, 62(1) (1), 41 - 51, Japanese


• 家政学基礎講座 1 家政学における調査研究の進め方―保健医療研究の立場から:サンプリングの重要性

  中澤港

  15 Nov. 2011, 日本家政学会誌, 62(11) (11), 749 - 753, Japanese


• ソロモン諸島におけるマラリア対策の進展と評価

  大前比呂思, 中澤港, 伊藤誠, 亀井喜世子, 山内太郎, FREDA Pitakaka, BERNARD Bakaotee

  04 Nov. 2011, 日本熱帯医学会大会プログラム抄録集, 52nd, 102, Japanese


• The Serum Leptin Level and Body Mass Index in Melanesian and Micronesian Solomon Islanders: Focus on Genetic Factors and Urbanization

  Takuro Furusawa, Izumi Naka, Taro Yamauchi, Kazumi Natsuhara, Ryosuke Kimura, Minato Nakazawa, Takafumi Ishida, Nao Nishida, Ricky Eddie, Ryutaro Ohtsuka, Jun Ohashi

  Jul. 2011, AMERICAN JOURNAL OF HUMAN BIOLOGY, 23(4) (4), 435 - 444, English


• Impact of Ethnic Conflict on the Nutritional Status and Quality of Life of Suburban Villagers in the Solomon Islands

  Taro Yamauchi, Minato Nakazawa, Hiroshi Ohmae, Kiseko Kamei, Kanae Sato, Bernard Bakote'e

  Aug. 2010, JOURNAL OF NUTRITIONAL SCIENCE AND VITAMINOLOGY, 56(4) (4), 227 - 234, English


• 男性労働者における配偶者の有無と抑うつ状態との関連性について

  長尾景充, 山崎千穂, 中澤港, 小山洋

  北関東医学会, 01 Aug. 2010, Kitakanto Med J, 60(3) (3), 304 - 305, Japanese


• うつスクリーニング票の自殺願望に関する質問項目と社会環境要因との関連について:性差の検討

  脇本優司, 山崎千穂, 中澤港, 小山洋

  01 Aug. 2010, Kitakanto Med J, 60(3) (3), 304, Japanese


• ソロモン諸島のマラリア調査における尿診断法の試み

  大前比呂思, 伊藤誠, 中澤港, 亀井喜世子, BAKOTEE Bernard, SURAJ Eka, 長岡史晃, 坪井敬文, 木村英作

  May 2010, 日本寄生虫学会大会プログラム・抄録集, 79th, 53, Japanese


• 4週間のセレン補充による血漿中セレン濃度変動と生化学指標,及び運動習慣との関連

  亀尾聡美, 華山智, 斉藤保雄, 中澤港, 山崎千穂, MUTAKIN Mutakin, 吉澤知穂, 村上正巳, 小山洋

  15 Apr. 2010, 日本衛生学雑誌, 65(2) (2), 368, Japanese


• The Q223R polymorphism in LEPR is associated with obesity in Pacific Islanders

  Takuro Furusawa, Izumi Naka, Taro Yamauchi, Kazumi Natsuhara, Ryosuke Kimura, Minato Nakazawa, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Yuji Ataka, Nao Nishida, Naoyuki Tsuchiya, Ryutaro Ohtsuka, Jun Ohashi

  Mar. 2010, HUMAN GENETICS, 127(3) (3), 287 - 294, English


• 労働者における抑うつ気分の因子構造の性差―「こころのチェックシート」の因子分析―

  山口実穂, 村山侑里, 恩田林子, 山崎千穂, 中澤港, 小山洋

  日本公衆衛生学会, 15 Oct. 2009, 日本公衆衛生学会総会抄録集, 68th, 525 - 525, Japanese


• 抑うつ状態と社会環境要因との関連性における性・世代間格差の検討

  村山侑里, 恩田林子, 山口実穂, 山崎千穂, 中澤港, 浅井直美, 斉藤敦子, 小山洋

  日本公衆衛生学会, 15 Oct. 2009, 日本公衆衛生学会総会抄録集, 68th, 525 - 525, Japanese


• ソロモン諸島におけるマラリア疫学調査への尿診断法の応用

  大前比呂思, 中澤港, 伊藤誠, 亀井喜世子, SURADJ Eka, 山内太郎, BAKOTEE Bernard, 長岡史晃, 坪井敬文, 木村英作

  Oct. 2009, 日本熱帯医学会大会プログラム抄録集, 50th, 86, Japanese


• Can an individualized and comprehensive care strategy improve urinary incontinence (UI) among nursing home residents?

  Yukiko Tanaka, Kumiko Nagata, Tomoe Tanaka, Koichi Kuwano, Hidetoshi Endo, Tetsuya Otani, Minato Nakazawa, Hiroshi Koyama

  Sep. 2009, ARCHIVES OF GERONTOLOGY AND GERIATRICS, 49(2) (2), 278 - 283, English


• ソロモン諸島において,なぜマラリア感染状況が改善したのか

  大前比呂思, 中澤港, 亀井喜世子, BAKOTE’E Bernard

  Feb. 2009, 日本寄生虫学会大会プログラム・抄録集, 78th, 96, Japanese


• Socioecological change and its effects on health: Cross-sectional and longitudinal comparisons among communities in the Solomon Islands

  Furusawa, T, Yamauchi, T, Natsuhara, K, Nakazawa, M, Ohtsuka, R

  2009, Proceedings of Philippines-Japan International Symposium on Urban-Rural Environmental Sustainability and Socio-economic Development, 166 - 173


• Gene flow and natural selection in Oceanic human populations inferred from genome-wide SNP typing

  Ryosuke Kimura, Jun Ohashi, Yasuhiro Matsumura, Minato Nakazawa, Tsukasa Inaoka, Ryutaro Ohtsuka, Motoki Osawa, Katsushi Tokunaga

  Aug. 2008, MOLECULAR BIOLOGY AND EVOLUTION, 25(8) (8), 1750 - 1761, English


• The Pacific lineage (2E) of JC polyomavirus is prevalent in Sumba Island, Eastern Indonesia

  Hiroshi Ikegaya, Zhong Shan, Hana Shimizu, Makiko Sekiyama, Augustinus Soemantri, Takafumi Ishida, Minato Nakazawa, Ryutaro Ohtsuka, Tomokazu Takasaka, Ayako Shibuya, Tadaichi Kitamura, Yoshiaki Yogo

  Aug. 2008, ANTHROPOLOGICAL SCIENCE, 116(2) (2), 183 - 186, English


• 共分散構造分析を用いた群馬県山村におけるうつと生活習慣との関係の検討

  村山侑里, 恩田林子, 中澤港, 小山洋

  北関東医学会, 01 Aug. 2008, Kitakanto Med J, 58(3) (3), 357 - 357, Japanese


• Prognostic value of serial cardiac I-123-MIBG Imaging in patients with stabilized chronic heart failure and reduced left ventricular ejection fraction

  Shu Kasama, Takuji Toyama, Hiroyuki Sumino, Minato Nakazawa, Naoya Matsumoto, Yuichi Sato, Hisao Kurnakura, Yoshiaki Takayama, Shuichi Ichikawa, Tadashi Suzuki, Masahiko Kurabayashi

  Jun. 2008, JOURNAL OF NUCLEAR MEDICINE, 49(6) (6), 907 - 914, English


• IX DNAデータベース 1. オセアニアにおける遺伝子流動と自然選択に関するゲノムワイドSNP解析

  木村亮介, 大澤資樹, 大橋順, 徳永勝士, 松村康弘, 中澤港, 稲岡司, 大塚柳太郎

  30 May 2008, DNA多型, 16, 282 - 286, Japanese


• A scan for genetic determinants of human hair morphology: EDAR is associated with Asian hair thickness

  Akihiro Fujimoto, Ryosuke Kimura, Jun Ohashi, Kazuya Omi, Rika Yuliwulandari, Lilian Batubara, Mohammad Syamsul Mustofa, Urai Samakkarn, Wannapa Settheetham-Ishida, Takafumi Ishida, Yasuyuki Morishita, Takuro Furusawa, Minato Nakazawa, Ryutaro Ohtsuka, Katsushi Tokunaga

  Mar. 2008, HUMAN MOLECULAR GENETICS, 17(6) (6), 835 - 843, English


• FTO polymorphisms in oceanic populations

  Jun Ohashi, Izumi Naka, Ryosuke Kimura, Kazumi Natsuhara, Taro Yamauchi, Takuro Furusawa, Minato Nakazawa, Yuji Ataka, Jintana Patarapotikul, Pornlada Nuchnoi, Katsushi Tokunaga, Takafumi Ishida, Tsukasa Inaoka, Yasuhiro Matsumura, Ryutaro Ohtsuka

  Dec. 2007, JOURNAL OF HUMAN GENETICS, 52(12) (12), 1031 - 1035, English


• オセアニア人類集団の集団構造と自然選択

  木村亮介, 大橋順, 松村康弘, 中澤港, 稲岡司, 大塚柳太郎, 徳永勝士

  07 Sep. 2007, 日本遺伝学会大会プログラム・予稿集, 79th, 106, Japanese


• ソロモン諸島におけるマラリア感染状況の変化と疫学的指標の限界

  大前比呂思, 亀井喜世子, 中澤港, 山内太郎, バーナード バコーテー, 石井明

  23 Feb. 2007, 日本寄生虫学会大会プログラム・抄録集, 76th, 48, Japanese


• 新刊短評：和田光平『Excelで学ぶ人口統計学』オーム社

  NAKAZAWA MINATO

  日本人口学会, 2007, 人口学研究, 40(3) (3), 107 - 108, Japanese

  Book review


• ゲノムワイドSNP解析が示すオセアニア集団の成り立ち

  木村亮介, 大橋順, 松村康弘, 中澤港, 稲岡司, 大塚柳太郎, 徳永勝士

  2007, 日本人類遺伝学会大会プログラム・抄録集, 52nd, 140, Japanese


• ゲノムワイドSNPデータベースを用いた毛髪の形態決定遺伝子の探索EDARはアジア人の毛髪の太さの決定遺伝子である。

  藤本明洋, 木村亮介, 大橋順, SAMAKKARN Urai, SETTHEETHAM‐ISHIDA Wannapa, 石田貴文, 森下保幸, 古澤拓郎, 中澤港, 大塚柳太郎, 徳永勝士

  2007, 日本人類遺伝学会大会プログラム・抄録集, 52nd, 181, Japanese


• Effect of sodium selenite supplementation on the levels of Prostacyclin I-2 and Thromboxane A(2) in human

  Rizky Abdulah, Yoko Katsuya, Kenji Kobayashi, Minato Nakazawa, Misa Nara, Masami Murakami, Hiroshi Koyama

  2007, THROMBOSIS RESEARCH, 119(3) (3), 305 - 310, English


• うつスクリーニング質問紙で把握される性・年齢別のうつ状態の特徴

  七尾道子, 中澤港, 大谷哲也, 小山洋

  15 Oct. 2006, 日本公衆衛生学会総会抄録集, 65th, 854, Japanese


• ソロモン諸島におけるマラリア感染状況の変化と疫学的指標の問題点

  大前比呂思, 亀井喜世子, 中澤港, 山内太郎, MAKOTEE Bernard

  Oct. 2006, Trop Med Health, 34, 105, Japanese


• ソロモン諸島で起きた民族紛争によって首都近郊住民のライフスタイルはどう変わり,健康状態はどうなったか

  中澤港

  Oct. 2006, Trop Med Health, 34, 145, Japanese


• Brief communication: Mitochondrial DNA variation suggests extensive gene flow from Polynesian ancestors to indigenous Melanesians in the Northwestern Bismarck Archipelago

  Jun Ohashi, Izumi Naka, Katsushi Tokunaga, Tsukasa Inaoka, Yuji Ataka, Minato Nakazawa, Yasuhiro Matsumura, Ryutaro Ohtsuka

  Aug. 2006, AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY, 130(4) (4), 551 - 556, English


• Low contribution of rice and vegetables to the daily intake of selenium in Japan

  R Abdulah, K Miyazaki, M Nakazawa, H Koyama

  Nov. 2005, INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION, 56(7) (7), 463 - 471, English


• 熱帯病の数学モデルの構築と予防制圧への応用

  嶋田雅暁, 浜田芳樹, 門司和彦, 西浦博, 稲葉寿, 竹内昌平, 大日康史, 中澤港, 増田直紀, 加茂将史

  Aug. 2005, 長崎大学熱帯医学研究所共同研究報告集, 2004, 73 - 77, Japanese


• 日本の出生力低下の諸要因：人類生態学からの検討

  NAKAZAWA MINATO

  2005, 日本生態学会関東地区会会報, 53:, 21 - 28, Japanese

  Lecture materials


• 人類生態学からみた都市の密度

  NAKAZAWA MINATO

  2005, 都市計画, 54(3):, 52 - 55, Japanese

  Introduction scientific journal


• Chemical forms of selenium for cancer prevention

  R Abdulah, K Miyazaki, M Nakazawa, H Koyama

  2005, JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY, 19(2-3) (2-3), 141 - 150, English

  Book review


• Molecular polymorphism of ABO blood group gene in Austronesian and non-Austronesian populations in Oceania

  J Ohashi, Naka, I, R Ohtsuka, T Inaoka, Y Ataka, M Nakazawa, K Tokunaga, Y Matsumura

  Apr. 2004, TISSUE ANTIGENS, 63(4) (4), 355 - 361, English


• Model Analysis of the Human Survival in the Regional Ecosystem

  Nakazawa M

  Kitakanto Medical Society, 2004, The KITAKANTO medical journal, 54(3) (3), 233 - 234, Japanese


• マラリア流行の数理モデル

  NAKAZAWA MINATO

  2004, 応用数理, 14(2):, 18 - 28, Japanese

  Introduction scientific journal


• 熱帯病の数学モデルの構築と予防制圧への応用

  嶋田雅暁, 門司和彦, 安高雄治, 木須友子, 菊池泰樹, 山内淳, 中沢港

  長崎大学, Aug. 2003, 長崎大学熱帯医学研究所共同研究報告集, 2002, 105 - 106, Japanese


• フィールドオブザーベーションからのモデル構築

  NAKAZAWA MINATO

  2003, 日本熱帯医学会雑誌, 31:, 243 - 245, Japanese

  Report scientific journal


• 熱帯病の数学モデルの構築と予防制圧への応用

  嶋田雅暁, 門司和彦, 菊池泰樹, 中沢港, 山内淳, 木須友子, 浜田芳樹

  長崎大学, Jul. 2002, 長崎大学熱帯医学研究所共同研究報告集, 2001, 76 - 86, Japanese


• 書評：稲葉 寿『数理人口学』東京大学出版会

  NAKAZAWA MINATO

  Population Association of Japan, 2002, 人口学研究, 31:, 148 - 149, Japanese

  Book review


• 学界消息：人口分野のシミュレーション手法

  NAKAZAWA MINATO

  Population Association of Japan, 2002, 人口学研究, 31:, 124 - 131, Japanese

  Introduction scientific journal


• 書評：原 俊彦『狩猟社会から農耕社会へ－先史時代ワールドモデルの構築－』

  NAKAZAWA MINATO

  Population Association of Japan, 2001, 人口学研究, 28:, 43 - 45, Japanese

  Book review


• 地域レポート--ソロモン諸島 (地域社会に対する開発の影響とその緩和方策に関する研究--日本学術振興会未来開拓学術研究推進事業)

  大塚 柳太郎, 須藤 健一, 中澤 港

  未来開拓大塚プロジェクト事務局, 30 Sep. 2000, アジア・太平洋の環境・開発・文化, (1) (1), 53 - 58, Japanese


• Methodological Individualism in Human Ecology.

  門司和彦, 吉見逸郎, 中沢港, 大塚柳太郎

  This paper introduces the approach based on methodological individualism and progressive contextualization in human ecology and ecological anthropology. Studies of ecology and human ecology can be defined as fields of science to understand the dynamics of groups of living organisms in relation with their environment. Although it is, their methodology needs not to be always holistic or group-oriented. It is often simply difficult or less useful to define an analytical unit such as a local ecosystem. It is especially the case in human ecology, where people act beyondthe border of the local ecosystem and where the impacts of human behaviour cannot be contained within the local ecosystem. In such cases, it is rather effective to study behaviour of an individual trying to understand the causes and consequences of the behaviour in the context in which the behaviour occurred. Researchers will get information for explaining the group dynamics by repeating this procedure progressively. For example, observation of behaviour of anindividual is used methodologically for understanding the behaviour of the group of which the individual is a member. This approach became more popular in ecology and has introduced into human ecology by Vayda. The time-saving spot-check method in time allocation studies offers a good example of an entry point of this approach, as shown in this paper . The approach shares some characteristics with studies based on the individual based model, which is a more recently-progressed computer-oriented method in theoretical ecology. Collecting empirical data through field studies based on methodological individualism and progressive contextualization and incorporating them into analytical models will promote further understanding in human ecology.

  The Japanese Society of Health and Human Ecology, 31 Jan. 2000, 民族衛生, 66(1) (1), 3 - 13, Japanese


• HLA-DRB1 polymorphism in Gidra living in South New Guinea

  J Ohashi, M Yoshida, R Ohtsuka, M Nakazawa, T Juji, K Tokunaga

  Apr. 1998, ANTHROPOLOGICAL SCIENCE, 106(2) (2), 168 - 168, English

  Summary international conference


• Relationship between malaria infection and serum levels of trace elements and fat-soluble vitamins in Papua New Guinea lowland Gidera tribe.

  本郷哲郎, 大塚柳太郎, 中沢港, 稲岡司, 鈴木継美

  Apr. 1996, 日本栄養・食糧学会総会講演要旨集, 50th, 197, Japanese


• パプアニューギニア・ギデラ族の血清中ミネラル・微量元素濃度

  本郷哲郎, 大塚柳太郎, 河辺俊雄, 中沢港, 鈴木継美, 稲岡司, 秋道智弥

  Apr. 1992, 日本栄養・食糧学会総会講演要旨集, 46th, 239, Japanese


• パプアニューギニア・ギデラ族のタンパク質栄養状態

  中沢港, 大塚柳太郎, 河辺俊雄, 本郷哲郎, 鈴木継美, 稲岡司, 秋道智弥

  Apr. 1991, 日本栄養・食糧学会総会講演要旨集, 45th, 226, Japanese


• パプアニューギニア・ギデラ族の血清中脂質濃度

  本郷哲郎, 大塚柳太郎, 河辺俊雄, 中沢港, 鈴木継美, 稲岡司, 秋道智弥, 板倉弘重

  Apr. 1991, 日本栄養・食糧学会総会講演要旨集, 45th, 227, Japanese


• パプアニューギニア・ギデラ族の血清中脂溶性ビタミン濃度

  本郷哲郎, 大塚柳太郎, 河辺俊雄, 中沢港, 鈴木継美, 稲岡司, 秋道智弥

  Apr. 1991, 日本栄養・食糧学会総会講演要旨集, 45th, 227, Japanese

• シンプル衛生公衆衛生学 2024

  上島, 通浩, 大久保, 孝義, 小山, 洋, 辻, 一郎

  Contributor, 6-9「衣食住の衛生」，6-10「公害と環境問題」，6-11「環境の管理」，13「国際保健」（小山洋と共著）, 南江堂, Mar. 2024, Japanese, ISBN: 9784524210220


• わかる公衆衛生学・たのしい公衆衛生学 第2版

  丸井, 英二

  Contributor, 第5章 感染症の疫学, 弘文堂, Oct. 2023, Japanese, ISBN: 9784335760242


• サニテーションと健康

  原田, 英典, 山内, 太郎, 三島, 伸介, 佐井, 旭, 中澤, 港, 杉田, 映理, 五味, 良太, 大石, 若菜, 佐野, 大輔, 浅田, 安廣, 神原, 咲子

  Contributor, 第3章 サニテーションと下痢, 北海道大学出版会, Mar. 2023, Japanese, ISBN: 9784832929548


• シンプル衛生公衆衛生学 2023

  辻, 一郎, 上島, 通浩, 小山, 洋

  Contributor, 6-9「衣食住の衛生」，6-10「公害と環境問題」，6-11「環境の管理」, 南江堂, Mar. 2023, Japanese, ISBN: 9784524203758


• シンプル衛生公衆衛生学 2022

  小山, 洋, 辻, 一郎, 上島, 通浩

  Contributor, 6-10「公害と環境問題」，6-11「環境の管理」, 南江堂, Mar. 2022, Japanese, ISBN: 9784524231560


• シンプル衛生公衆衛生学2021

  鈴木,庄亮, 中澤,港

  Joint work, 6-10「公害と環境問題」，6-11「環境の管理」, 南江堂, Mar. 2021, Japanese, ISBN: 9784524228782


• Rによる人口分析入門

  中澤, 港

  Single work, 朝倉書店, Sep. 2020, Japanese, ISBN: 9784254128437


• わかる公衆衛生学・たのしい公衆衛生学

  中澤 港

  Contributor, 第5章 感染症の疫学, 弘文堂, Jan. 2020


• 人口学事典

  中澤 港

  Joint editor, 「第１章 人口成長――増加と減少」，「第４章 出生率の変化」，「第11章 学際科学としての人口学」, 丸善, 2018


• 「４章 モデルのあてはめと予測―有効性と限界」「６章 人口の再生産」「BOX：遺伝子文化共進化」「BOX：マラリア」「BOX：遺伝子組換え作物」

  NAKAZAWA MINATO

  Single work, 渡辺知保・梅崎昌裕・中澤 港・大塚柳太郎・関山牧子・吉永 淳・門司和彦編著『人間の生態学』朝倉書店, 2011, Japanese, ISBN: 9784254171464

  Scholarly book


• Oceanic Studies

  Yoshioka Masanori, 遠藤 央, 印東 道子, 梅崎 昌裕, 中澤 港, Kubota Sachiko, 風間 計博, ISHIMORI DAICHI

  Supervisor, 京都大学学術出版会, Oct. 2009, Japanese

  Scholarly book


• 現代人口学の射程

  NAKAZAWA MINATO

  Single work, ミネルヴァ書房, 2007, Japanese, ISBN: 9784623050178

  Scholarly book


• Rによる保健医療データ解析演習

  NAKAZAWA MINATO

  Single work, ピアソン・エデュケーション, 2007, Japanese, ISBN: 9784894717558

  Textbook


• 第2章 急速な人口増加の成因と帰結

  大塚柳太郎編『島の生活世界と開発(1)ソロモン諸島 最後の熱帯林』，東京大学出版会, 2004, ISBN: 4130341715


• 第2章 急速な人口増加の成因と帰結

  NAKAZAWA MINATO

  Single work, 大塚柳太郎編『島の生活世界と開発(1)ソロモン諸島 最後の熱帯林』;東京大学出版会, 2004, Japanese, ISBN: 4130341715

  Scholarly book


• 開発と環境保全の相互連関性－マルチエージェント・モデルによる分析

  大塚柳太郎・篠原徹・松井健編『島の生活世界と開発(4) 生活世界からみる新たな人間―環境系』，東京大学出版会, 2004


• 開発と環境保全の相互連関性－マルチエージェント・モデルによる分析

  NAKAZAWA MINATO

  Single work, 大塚柳太郎・篠原徹・松井健編『島の生活世界と開発(4) 生活世界からみる新たな人間―環境系』;東京大学出版会, 2004, Japanese

  Scholarly book


• Rでシミュレーション

  岡田昌史編『The R Book: データ解析環境Rの活用事例集』，九天社, 2004


• Rでシミュレーション

  NAKAZAWA MINATO

  Single work, 岡田昌史編『The R Book: データ解析環境Rの活用事例集』;九天社, 2004, Japanese

  Scholarly book


• 人間の人口動態

  NAKAZAWA MINATO

  Joint work, 巌佐 庸・松本忠夫・菊沢喜八郎／日本生態学会編 『生態学事典』 共立出版, 2003, Japanese

  Dictionary or encycropedia


• Rによる統計解析の基礎

  NAKAZAWA MINATO

  Single work, ピアソン・エデュケーション, 2003, Japanese

  Textbook


• 13-II. 妊孕力の遺伝要因と環境要因

  日本人口学会編『人口大事典』，培風館，東京, 2002


• 13-II. 妊孕力の遺伝要因と環境要因

  NAKAZAWA MINATO

  Single work, 日本人口学会編『人口大事典』;培風館;東京, 2002, Japanese

  Dictionary or encycropedia


• 13-I. 生殖のメカニズムとヒトの生殖戦略

  日本人口学会編『人口大事典』，培風館，東京, 2002


• 13-I. 生殖のメカニズムとヒトの生殖戦略

  NAKAZAWA MINATO

  Single work, 日本人口学会編『人口大事典』;培風館;東京, 2002, Japanese

  Dictionary or encycropedia

• COVID-19対策のこれから

  中澤港

  第38回個体群生態学会企画シンポジウム『COVID-19の個体群生態学：疫学と個体群管理の共通点と相違点』, Oct. 2022, Japanese

  [Invited]

  Nominated symposium


• 企画セッション(2)「健康寿命について包括的に考える」

  村上義孝, 野村周平, 別府志海

  日本人口学会第70回研究大会, Jun. 2018, Japanese

  Others


• 生態学的健康観・あるいは健康の多義性について

  NAKAZAWA MINATO

  日本国際保健医療学会第35回西日本地方会シンポジウム『さまざまな視点から「健康」の持続可能性を考える』, Mar. 2017, Japanese, 神戸大学（兵庫県神戸市）, Domestic conference

  [Invited]

  Nominated symposium


• The factors associated with the delayed first antenatal care in the Philippines

  HORIGUCHI HANNA, NAKAZAWA MINATO

  日本国際保健医療学会第35回西日本地方会, Mar. 2017, English, 神戸大学（兵庫県神戸市）, Domestic conference

  [Invited]

  Oral presentation


• Socio-Environmental and Behavioral Risk Factors Associated with Obesity in the Capital, Solomon Islands: Case-Control Study

  TSUCHIYA CHIHIRO, NAKAZAWA MINATO

  日本国際保健医療学会第35回西日本地方会, Mar. 2017, English, 神戸大学（兵庫県神戸市）, Domestic conference

  [Invited]

  Oral presentation


• Hospital Service Quality among Pediatric Patients in Cambodia

  KOBAYASHI EMI, NAKAZAWA MINATO

  日本国際保健医療学会第35回西日本地方会, Mar. 2017, English, 神戸大学（兵庫県神戸市）, Domestic conference

  [Invited]

  Oral presentation


• 韓国人留学生のストレスと健康状態：韓国在住の学生との比較研究

  TAKANO MOE, NAKAZAWA MINATO

  日本国際保健医療学会第31回大会, Dec. 2016, Japanese, 久留米シティプラザ（福岡県久留米市）, Domestic conference

  [Invited]

  Poster presentation


• 出生力と栄養状態との関係についての一考察

  NAKAZAWA MINATO

  日本人口学会第65回大会[テーマセッション：不妊と人口], 2013, Japanese, Domestic conference

  [Invited]

  Invited oral presentation


• 人類生態学における小集団人口学の方法論

  NAKAZAWA MINATO

  日本人口学会第64回大会[テーマセッション１：人類生態学と人口学], 2012, Japanese, Domestic conference

  [Invited]

  Invited oral presentation


• 疫学・公衆衛生学における研究方法論の基礎

  NAKAZAWA MINATO

  静岡県立大学セミナー, 2012, Japanese, Domestic conference

  [Invited]

  Invited oral presentation


• Rによる生存時間解析入門

  NAKAZAWA MINATO

  第18回疫学セミナー, 2011, Japanese, Domestic conference

  [Invited]

  Invited oral presentation


• ガダルカナル島首都近郊村落で進行中の再近代化による健康影響

  NAKAZAWA MINATO

  日本オセアニア学会, 2010, Japanese, Domestic conference

  Oral presentation


• Rを用いた人口分析の教育事例：長所と短所

  NAKAZAWA MINATO

  日本人口学会, 2010, Japanese, Domestic conference

  Oral presentation


• ソロモン諸島の再近代化しつつある首都近郊の村における尿中Na/K比

  NAKAZAWA MINATO

  日本熱帯医学会, 2009, Japanese, Domestic conference

  Poster presentation


• エスニックテンション後のガダルカナル島民の塩分摂取・肥満・血圧の変化

  NAKAZAWA MINATO

  日本オセアニア学会, 2009, Japanese, Domestic conference

  Oral presentation


• ソロモン諸島ガダルカナル島首都近郊において橋と道路の再開通はQOLをどう変えたか

  NAKAZAWA MINATO

  日本オセアニア学会, 2008, Japanese, Domestic conference

  Oral presentation


• Continuous urinalyses clarified that urine pH reflected the changes of dietary habits and that urobilinogen reflected falciparum malaria in Solomon Islands

  NAKAZAWA MINATO

  XVIIth International Congress for Tropical Medicine and Malaria, 2008, English, International conference

  [Invited]

  Poster presentation


• ソロモン諸島におけるソーシャル・キャピタル評価：社会疫学の効用と限界

  NAKAZAWA MINATO

  日本オセアニア学会, 2007, Japanese, Domestic conference

  Oral presentation


• マラリア対策が充分に効果を発揮しない住民側の事情

  NAKAZAWA MINATO

  第47回日本熱帯医学会・第21回日本国際保健医療学会合同大会 自由集会“適正技術開発と普及におけるコラボレーション－マラリア対策を事例として”, 2006, Japanese, Domestic conference

  [Invited]

  Invited oral presentation


• ソロモン諸島民族紛争はホニアラ近郊村落住民の健康にどう影響したか

  NAKAZAWA MINATO

  日本オセアニア学会, 2006, Japanese, Domestic conference

  Oral presentation


• ソロモン諸島で起きた民族紛争によって首都近郊住民のライフスタイルはどう変わり，健康状態はどうなったか

  NAKAZAWA MINATO

  日本熱帯医学会・日本国際保健医療学会合同大会, 2006, Japanese, Domestic conference

  Oral presentation


• 日本の出生力低下の諸要因：人類生態学からの検討

  NAKAZAWA MINATO

  日本生態学会関東地区会シンポジウム「日本の人口問題 －保全生態学からの提言－」, 2004, Japanese, Domestic conference

  [Invited]

  Invited oral presentation


• 高齢者のQOLと生活習慣について

  NAKAZAWA MINATO

  日本民族衛生学会, 2004, Japanese, Domestic conference

  Oral presentation

• New York Academy of Sciences


• 生態人類学会


• 日本人類学会


• 日本数理生物学会


• 日本熱帯医学会


• 日本国際保健医療学会


• Japanese Society of Health and Human Ecology


• 日本公衆衛生学会


• 日本人口学会


• 日本オセアニア学会

• ソロモン諸島で未来開拓研究実施のためのカウンターパートとの折衝・予備調査

  2000


• パプアニューギニア・ギデラ族の健康と栄養にかかわる調査

  1997


• パプアニューギニア・ギデラ族の低出生力の原因を探る調査

  1996


• ソロモン諸島ガダルカナル島レンゴ語族におけるマラリア感染関連行動と健康調査

  1995


• パプアニューギニア低湿地における熱帯環境に依存した生業活動とマラリア

  1994


• パプアニューギニア・フリ族における保健医療と人口のデータベース整理と分析

  1994


• パプアニューギニア・ギデラ族における血清疫学調査

  1989

• Historiographic "Intervention" in the COVID-19 Pandemic - Preserving Records and Memory for Historicization

  飯島 渉, 橋本 雄太, 市川 智生, 五月女 賢司, 中澤 港, 井上 弘樹, 高橋 そよ, 後藤 真

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Aoyama Gakuin University, 01 Apr. 2023 - 31 Mar. 2028


• Building an Emergency Support System for immigrants from Southeast Asia during Covid-19 pandemic: Focusing on Psychosocial Distress

  山下 正, 瀬戸徐 映里奈, 片山 修, 岩本 里織, 山田 千佳, 中澤 港, 加藤 憲司, 山田 暢子, 野上 恵美

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe City College of Nursing, 01 Apr. 2022 - 31 Mar. 2026


• バヌアツの子どもの「喫煙・飲酒予防のための保健教育プログラム」の構築

  中世古 恵美, 小寺 さやか, 中澤 港

  日本学術振興会, 科学研究費助成事業, 基盤研究(C), 関西国際大学, 01 Apr. 2022 - 31 Mar. 2026


• Building an Emergency Support System for immigrants from Southeast Asia during Covid-19 pandemic: Focusing on Psychosocial Distress

  山下 正, 中澤 港, 野上 恵美, 山田 千佳, 瀬戸徐 映里奈, 岩本 里織, 山田 暢子

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe City College of Nursing, 01 Apr. 2022 - 31 Mar. 2026


• Cooperation of Humanities and Sciences to Establish an Empirical Research Project for Implementing and Examining "Global Welfare"

  桜井 徹, 太田 和宏, 杉下 智彦, 大月 一弘, 辛島 理人, 工藤 晴子, 中澤 港, 勝二 郁夫, 新川 匠郎, 青山 薫, 梅屋 潔, 小川 啓一, 齋藤 剛, 益田 岳, クラクストン ジェームズ

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2019 - 31 Mar. 2023

  本研究は、以下の3つの切り口から文理協働による共同研究の遂行を目的としている。第一に、移民・難民の起源地における住民の基本的な生活条件を直視することを通して、大規模な移民現象のプッシュ要因を文理両面から総合的に再検討する。第二に、多領域横断的な研究体制を構築し、必然的に文理融合的な様相を呈する移民・難民の起源地の生活条件の問題に、学際的なチームが協力して打開策を検討する。第三に、開発援助が実施されている地域に実際に生きる人々／それらの地域を故郷とする人々が、様々な援助をどのように受け止め、また将来に向けていかに活かせるのかを分析する。 残念ながらコロナ禍の影響によって、イスラム圏から来た在日外国人の聞き取り調査など国内での調査研究は実施することができたものの、ホンジュラス、南アフリカ、モロッコ、ケニア、イラン、キルギスタン、インドネシア、フィリピン等の国々を対象に、医学、社会学、法学、人類学、教育学、政治経済学等の多様な角度から現地調査を遂行し、どのような開発援助の問題点が現地で明らかとなっているのかを分析するという目的は果たせなかった。 しかしながら、この間、インドネシアのアイルランガ大学や南アフリカのケープタウン大学をはじめとする海外の研究者や世界銀行、ユネスコ、ユニセフとは、海外共同調査やワークショップ開催に向けて定期的にコンタクトを取り続け、海外調査や研究集会を再開するための準備を着々と進めることができた。


• A Comparative Study of Primary Health Care Systems in Indochina Peninsula

  島村 靖治, 山田 浩之, 松島 みどり, 神谷 祐介, 中澤 港, 佐藤 希

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Kobe University, 09 Oct. 2018 - 31 Mar. 2023

  本研究は、2015年に国連で採択されたSustainable Development Goals(SDGs)の第3重要課題に設定された「健康な暮らし及び厚生の促進」に関連した研究課題に対して、既存データならびに現地調査を通して収集する独自データを用いて取り組むことを目的としている。2021年度は、ベトナム中部の３省において2014年と2017年に収集した調査データを使用し、妊産婦の検診・出産時の医療施設選択行動に関する実証分析を行っている。なかでも、妊産婦の医療施設選択行動と医療保険の指定施設との間の関係を検証し、妊産婦が村落レベルの公的第一次医療施設（CHC）を指定施設とする医療保険に加入していた場合、CHCを利用する確率が高くなる傾向にあったことを確認した。妊産婦の検診・出産時の医療サービスの受診は医療保険の加入状況に拘わらず原則無償である。したがって、保険加入者がCHCを利用する金銭的メリットは少ないにも拘わらずCHCを利用する妊産婦が増加する傾向にあったことは非常に興味深い発見である。こうした分析結果について国内学会で発表すると共に、論文としてまとめ愛知学院大学経済研究所所報として公刊した。 また、カンボジアのDemographic and Health Surveyを使った分析も行っている。カンボジアでは2009年に公的医療施設で働く医療従事者に対する報奨金制度を導入し、医療従事者の勤労意欲を改善、医療サービスの質の向上を図っている。そして、既存研究では報奨金制度導入の結果として、医療従事者が時間通りに出勤するようになるなど行動変容がみられたと報告している。そこで、本研究では、更にこうした医療サービスの供給側の変化により、疾病・疾患に罹患した人々がより公的な医療施設を利用するようになったかどうか検証を行い、その分析結果について国内学会で発表を行っている。


• The mechanism of population dynamics in small-scale communities of present Laos

  横山 智, 森木 美恵, 佐藤 廉也, 中澤 港, 白川 千尋

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Nagoya University, 01 Apr. 2017 - 31 Mar. 2021

  2019年度は、ラオスで人間に関わる研究を実施するために必要となる倫理審査をラオス保健省（LaoTPHI）に申請し、昨年度に引き続き許可され、問題なくフィールド調査を実施することができた。また、LaoTPHIだけではなく、農林省国立農林業研究所（NAFRI）との協力関係も良好な状態で継続しており、メンバーの現地調査では郡農林事務所やNAFRI北部支所のスタッフを派遣して頂き、調査を実施した。フィールド調査は、ラオス北部ムアンゴイ郡と中部サワンナケート県セポン郡の調査地においてを実施した。本研究では、過去に遡って住民のデータを取得して人口と生業の変動を解明することを目的としているため、データの信憑性を高めるために、取得したデータを検証して、さらに不明点があると再調査をして確認する作業を繰り返す必要がある。 ラオス北部のルアンパバーン県ムアンゴイ地区の対象2村落では、過去に何度か分村し、多くの住民が他出していった歴史があり、過去の住民に関するデータ検証作業は若干遅れている。また、ムアンゴイ地区の生業データ取得に関して、これまでは水田を中心に実施してきたが、焼畑のデータに関しては2019年度から本格的に収集し始め、焼畑のための森林伐採作業に関する詳細なデータを得た。なお、家族計画班が実施する研究に関しては、夫婦間関係のデータと食事調査のデータ、共に順調に収集することができた。また、サワンナケート県セポン郡では住民の行動調査、および重要な生業である焼畑の森林伐採に関するデータを取得した。 これらの調査から、ラオス北部ムアンゴイ郡と中部サワンナケート県セポン郡の調査地の全世帯の人口構成と生業構造を明らかにするデータがで得られた。さらに成人世帯構成員（とくに女性）の家族計画に関する詳細なデータを得た。


• A study of smoking and drinking behaviour among children and their parents/guardians for the development of a school health education program in Vanuatu

  Nakaseko Emi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 01 Apr. 2017 - 31 Mar. 2020

  This study examined the factors associated with tobacco smoking and alcohol consumption among early adolescents in Vanuatu, using a data set of adolescents and their parents/guardians. This cross-sectional school-based study comprised 157 adolescents in the seventh- and eighth-grades (mean age = 13.3 years; 52.2% girls) from three public schools and their parents/guardians. Logistic regression analysis indicated that there was not significantly relationship between smoking and drinking among adolescents and their parents/guardians. On the other hand, peer effect (habit of smoking and drinking and offering tobacco or alcohol) was significantly associated with smoking and drinking. Parental and sibling influences were significantly associated with the intention to smoke and drink.


• A study to develop a dietary assessment tool for obesity control in the Pacific countries

  Mizumoto Kaori

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 01 Apr. 2016 - 31 Mar. 2020

  A study was conducted with the aim to developing a dietary assessment tool in consideration of traditional cultural background in the Pacific countries that would contribute to more accurate understanding of dietary contents in the region. A series of dietary surveys consists of food weighing and recording method and food photo capturing method was conducted three times from February 2018 to May 2019 in Pohnpei state, FSM. A preliminary food frequency questionnaire (FFQ) Micronesian version was generated based on the results of the first survey, and in the second and third surveys, modifications of the FFQ were repeated based on the results of the respective surveys. Although gaps of the regular quantity between individuals and also within an individual were identified during the surveys, the issue was modified by setting a standard quantity in common. Finally the FFQ that reflects food intake of Micronesian people was completed at the end of this study.


• Experimental Design of a New Micro-health Insurance Scheme: Latent Class Modeling Approach

  FUKUI SEIICHI

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), 01 Apr. 2016 - 31 Mar. 2019

  This study aims to investigate the possibility of increasing take-up rate by introducing a new scheme of CBHI including treatment of chronic diseases and medical service by pricvate clinic.For that purpose, we conducted a field survey to collect the data and information in rural Cambodia, and estimated willingness to pay for the new cheme by using latent class model and the cost to implementit. The results show that we can provide a sustainable CBHI scheme including treatment of chronic diseases, medical service of private clinic, and improvemet of insurance management.


• Expansion of Health Insurance Coverage and Its Effects in Vietnam

  SHIMAMURA YASUHARU, NAKAZAWA Minato, Nguyen Minh Tam, Nguyen Thi Hoa, Le Ho Quynh Anh

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2012 - 31 Mar. 2017

  The introduction of health insurance has been one of the most important policy agenda in a growing number of newly emerging economies. This research project, in Vietnam where the government has exerted enormous efforts towards universal health insurance coverage, aims to implement empirical studies to draw valuable lessons for Vietnam and also other counties in the process of achieving universal health insurance coverage. During this research project, we analyzed statistical data obtained from several governmental organizations such as the General Statistics Office and the Ministry of Health of Vietnam as well as data collected by conducting our original household and health facility surveys in central Vietnam. The findings from our empirical analyses were presented at both domestic and international symposiums, seminars and workshops (16 presentations). In addition 6 academic papers have been published.


• A Study of the Impacts of Micro Health Insuranc on Social Dilemma

  FUKUI Seiichi, SURUGA Terukazu, KAGATUME Masaru, KAWABATA Masato, TAKASHINO Nina, MAHARAJAN Lal Keshav, MIENO Fumiharu, MIWA Kana, YAGURA Kenjiro, YAMAZAKI Kouji

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kyoto University, 01 Apr. 2013 - 31 Mar. 2016

  We investigate the impacts of formal micro-insurance on informal insurance system, by an artefactual field experiments and find crowding-in information effects and crowding-out framing effects which have never been found in existing studies. We also find the solidarity of respondents affect take-up of formal micro-insurance in Cambodia.In addition, we find evidence that informal solidarity among group members, caste, and religion have significant impacts on transferred incomein India.


• Life of the Gidra hunter-gatherer-cultivator in the changing tropical forest of Papua New Guinea

  KAWABE Toshio, SUDA Kazuhiro, KUCHIKURA Yukio, YAMAUCHI Taro, HAGIHARA Jun, ODANI Shingo, NAKAZAWA Minato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Takasaki City University of Economics, 01 Apr. 2011 - 31 Mar. 2015

  The Gidra people are a hunter-gatherer-cultivator tribe living in the low wetland that is located roughly in the center of the island of New Guinea and covers the southern coastal area near the Equator. The Gidra people, also called the Forest People, live in this tropical climate area by hunting game animals and gathering nuts in the tropical forests and the savannas, carrying out slash- and-burn agriculture by making use of the forests, fishing in the winding rivers and the web of tangled creeks, and growing sago palm (Metroxylon sagu) in the wetlands. Since the human ecological research has been continued from 1980, population data of the Gidra was obtained for deep analysis of the Gidra villagers. New method of investigation was tried on the group hunting with bows and arrows by using GPS meter and accelerometer. We obtained the detailed data of hunting activity for many hunters simultaneously: GPS location, moving direction and speed of each hunter.


• Relationship between the selenium nutritional status and the depressive types classified with depression screening questionnaire and multi-channel near-infrared spectroscopy

  KOYAMA Hiroshi, KAMEO Satomi, YAMAZAKI Chiho, MIKUNI Masahiko, NAKAZAWA Minato, FUKUDA Masato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Gunma University, 01 Apr. 2011 - 31 Mar. 2014

  Depression has become a great social problem throughout the world. Various factors are relating to the depressive status, and selenium nutritional status may also cause the affective status. A new depression screening questionnaire, the Kokoro Check Sheet (KCS), has been developed and used in this study.The objective of the present study was to divide the depressive subjects into several types of depression and analyze the association of selenium status. A total of 600 subjects in rural area and 1,500 subjects in working places were participated.The results of KCS shows approximately 5% of males and 6% of females were as depressive. Association of selenium to the depressive status and comparison of the grouping by KCS and by multi-channel near-infrared spectroscopy (NIRS) are the next step.


• Redefining the Ecosystem Services through the Assessment of Inter-linkage Values.

  AKIMICHI Tomoya, YOKOYAMA Satoshi, ONISHI Hideyuki, MOJI Kazuhiko, KONO Yasuyuki, ABE Ken-ichi, SATO Jin, TOMITA Shinsuke, NISHIMOTO Futoshi, OH Tomohiro, HIROTA Isao, WATANABE Kazuya, WATANABE Kazuo, NAKAZAWA Minato, TOJO Bumpei, SETO Hiroyuki, NAKAZAWA Minato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Research Institute for Humanity and Nature, 01 Apr. 2010 - 31 Mar. 2014

  From four major concepts proposed in the Millennium Assessment (MA), namely, provisioning services, cultural services, supporting services and regulating services, inter-relations among these four elements are not illustrated and remain unknown. A new methodological approach in order to resolve this ambiguity, and to demonstrate integrated figures of human-nature interactions, was proposed. Benefits and risk analyses were examined, using several topics as to global trading, environmental deterioration, health and food risk, using examples of various communities in Southeast Asia. Through the analyses of benefits and risk as a set, it became clear that the notion of linkage-values to link four types of ecosystem services is effective tool. Also, it became clear that commons approach and Eco-historical approach are important in order to assess totally the benefits of ecosystem services and to understand the significance of the linkage-values.


• Changes of life, diet and health status in the rapid re-modernization phase after the termination of "Ethic Tension"

  NAKAZAWA Minato, YAMAUCHI Taro, FURUSAWA Takuro, OHMAE Hiroshi, KAMEI Kiseko, ISHIMORI Daichi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Gunma University, 2008 - 2010

  After the end of 6 years' "Ethnic Tension" between Guadalcanal and Malaita islanders in Solomon Islands, the life in suburban villages, which has been backward to subsistence economy during the tension, rapidly re-modernized and involved in market economy. In the present study, based on biannual surveys on health status, dietary habits and lifestyle of people in one such village, we clarified in which aspects such rapid change tended to appear and which aspects tended to be unchangeable, and we suggested the health transition model in the Solomon Islands.


• Alliance Study of Kinship Database : its development and operation

  SUGITO Shigenobu, KUBOTA Sachiko, KAWAGUCHI Hiroshi, NAGASAKI Kiyonori, ENDO Mamoru

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Sugiyama Jogakuen University, 2006 - 2008

  本研究は、親族データベース(以下DB)の開発とそのXML環境に関する研究、先住民知識DBの構築に関する連携研究を目的として構想された。 研究成果の第一は、親族DB「アライアンス」の開発そのものである。親族DBおよび家系図表示ソフトのフリーウェアとして、もしくは、ウェブ版の使用が可能である。第二の成果は、オーストラリアおよびニュージーランドの研究者との親族DBおよび先住民知識に関わる情報交換である。また、歴史人口学や歴史人類学、また、フィールドワーカーとの連携研究もまた、本研究の重要な要素であった。


• Community survey on infectious disease crisis management and the development of prediction and prevention measures

  KAKEHASHI Masayuki, EBOSHIDA Akira, NISHIYAMA Mika, YAMAGUCHI Fumi, INABA Hisashi, NAKAZAWA Minato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Hiroshima University, 2004 - 2006

  The purpose of this research was to provide useful information on infectious disease crisis management based on community survey on infectious diseases prevention by developing mathematical models to predict the spread of infectious diseases and to evaluate the effect of proposed preventive policies. This research was carried out in three years. In the first year (2004), a community survey on the knowledge on and the preventive attitude against infectious diseases was performed. In the next year (2005), the model for simulating the spread of infectious disease was developed based on the collected information by the survey. In the last year (2006), further simulation was carried out to evaluate the effect of several proposed preventive policies. As a result of community survey, the knowledge on infectious disease and its prevention among young people (adolescents) seemed less sufficient in comparison with adults. The data obtained by the survey was used to specify the parameter values used in the mathematical models. In the simulation model, population consisted of households are used. Each individual has risk of infection in his/her household, at his/her school or work place and during transit by train. By the simulation, the effect of vaccination and reduction of outing, and so on, were analyzed quantitatively. Further analyses are still in process.


• セレン栄養状態の国際比較(インターセレン・スタディ)のための萌芽的研究

  小山 洋, 中澤 港, 苅田 香苗, 勝矢 陽子, 小林 健司, 笹澤 吉明, 宮崎 賀織

  日本学術振興会, 科学研究費助成事業, 萌芽研究, 群馬大学, 2004 - 2005

  本萌芽研究では、化学形態別セレン摂取量と健康指標データや生体試料中のセレン指標との関連について国際比較(インターセレン・スタディ)を行うため、世界各国におけるセレンの化学形態別摂取量を推定するためのデータベースの構築を目的とする。 セレンは含有されている食品群ごとにその化学形態が大きく異なっており、それぞれ生物学的利用率や生体内代謝経路が異なることが知られている。セレンの適正な摂取基準を明らかにするためには、化学形態ごとの分析が重要である。本研究はHPLC-ICP-MS法によってセレンの化学形態別の定量分析を行ない、データベース化を図るとともに、疾病罹患率や生体試料中セレン指標との関連を明らかにしたい。また、地球レベルでは各地の土壌中セレン濃度が異なるため、一部で食品中セレン含有量の高い地域や低い地域が知られている。将来的には、こうした地域も含めて国際的なセレン栄養調査(化学形態別)を実施していく必要があると考える。 本年度は以下の3点について行った 1.世界各国のフィールドから食品サンプリングを行ない、食品群ごとのセレン含有量の測定を行なった。 (1)採集場所およびサンプル数は、日本(岩手県)339サンプル、ベトナム7サンプル、ソロモン諸島14サンプル、フランスおよびスイス8サンプル、タイ51サンプル、インドネシア(2地域より)57サンプルである。 (2)日本の穀類野菜類についてはセレン含有量がやや低値であること。特に米のセレン含有量(n=471.3±0.5μg/100g)が低いこと。また、魚介類中のセレン含有量は、フールドごとの差はなくほぼ一定で、食品群別の比較では、もっとも高い(34.9-97.7μg/100g)ことが示された。 2.食品摂取調査に用いる簡易型食品群別摂取頻度調査票の英語版およびインドネシア語版の試作検討を行なった。 3.食物中セレンの分別分析については、セレン含有アミノ酸のHPLCにおける分別条件の検討を行なった。


• Applied Anthropological Study of Kinship Database and Genealogy

  SUGITO Shigenobu, KAWAGUCHI Hiroshi, KUBOTA Sachiko, NAKAZAWA Minato, NAKASHIMA Toyoshiro

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Sugiyama Jogakuen University, 2003 - 2005

  The main aims of this study are following two targets, (1)the continuous development of the application of the kinship database and genealogy for a socio-cultural anthropological fieldwork tool, and (2)the development of the supporting method for the indigenous and/or kinship based societies. Three major results from our project are as follows. 1.Alliance system expands to the cognatic genealogies and adoption system : 2.Alliance system expands to the historical and documented societies ◆to develop interface application with the Alliance database system and historical records, which is household records of Edo era in Japan ◆Alliance project has presented two article (1) and (2), and suggests, in the articles, the possibilities of the historical fieldwork of the Edo era family system ◆Co researcher, Prof.Kawaguchi, has gotten another research fund and the Alliance project expects further extension of joint study of this topic 3.Alliance project points the importance of the strategic use of kinship knowledge for the indigenous and/or kinship base societies in post modern settings in the world ◆Article (3)suggests the importance of the kinship knowledge as the commons or sharing strategy ◆Alliance project has a joint project with Australian research group for the indigenous knowledge management system, and this will succeed to the next project for three year project funded by JSPS from 2006 to 2008, "Integrated and interdisciplinary study of kinship database"


• A genetic-ecological study of the risk foctors for lifestyle-related diseases in Oceanian populations

  OHTSUKA Ryutaro, ISHIDA Takahumi, OHASHI Jun, YAMAUCHI Taro, NATSUHARA Kazumi, NAKAZAWA Minato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), The University of Tokyo, 2002 - 2004

  We examined the relationships between genetic characteristics and environmental factors associated with the risk factors for lifestyle-related diseases, such as obesity and diabetes, for six Austronesian populations on Oceanian islands. The target populations consisted of one from Tonga, two from Indonesia, and three from the Solomon Islands. Based on the mean body mass index(BMI), the Tongan population was judged ‘obese' and their waist-to-hip ratio tended to increase with age. Significant correlations were found between diabetic morbidity and indices of obesity, such as BMI and waist circumference. The results also suggested that abdomen fatness was a significant risk factor for abnormal glucose tolerance. By contrast, the mean BMI of the Indonesian populations was considerably lower than that of their Tongan counterparts, and they were categorized as ‘normal'. In the Indonesian populations, the fasting blood glucose was significantly correlated with blood pressure, while there was no significant relationship between diabetes and obesity indices. The populations of the three Solomon Islands consisted of two Melanesian groups that differed in their degree of modernization, and one group of Micronesian migrants from the Gilbert Islands (Kiribati). Their average BMI was higher than that of Indonesians, but lower than that of Tongans. Based on the BMI, men were categorized as ‘normal', and women as ‘overweight'. The urine dipstick test revealed that the Melanesian group with the low degree of modernization maintained a traditional diet (e.g., staple tubers, local greens, and fish). The results appear to reflect synergy between genetic characteristics and environmental factors, especially dietary patterns.


• A study for mathematical theory and applications of structured population dynamics

  INABA Hisashi, NAKAZAWA Minato, KAKEHASHI Masayuki

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), The University of Tokyo, 2000 - 2002

  (l) We have developed a two-sex age-structured population model with homogeneous marriage function as an evolution equation system and constructed its semigroup solution. Existence of persistent solution (exponential solution) has been proved for general marriage function. (2) We have formulated a nonlinear age-structured population model for marine invertebrates with density dependent mortality. We have constructed a positive semigroup solution, and proved the sufficient condition for the stability of the steady state solution. We have also the possibility of unstable steady state solution and oscillatory behavior. (3) We have formulated an epidemic model for type A influenza that takes into account the evolutionary aspects of virus, and examined it as an evolutionary equation. We have established the threshold condition for disease invasion and existence of endemic steady state. The possibility of unstable endemic steady state has been Oalso shown. (4) We have constructed a duration-dependent epidemic model for vector transmitted diseases like as Chagas disease, and shown that a backward bifurcation of endemic steady states can occur if there exists a disease-induced death rate. (5) We have formulated and analyzed an age-duration-structured population model for HIV infection in homogeneous community. We have established the threshold condition for invasion and existence of endemic steady states. It was also shown that a backward bifurcation of endemic steady slates can occur, so multiple endemic steady states are possible. (6) We have analyzed the behavior of a pair formation model for sexually transmitted diseases with subpopulations divided by sexual activity. And we have constructed an individual-based model to simulate sexually transmitted diseases.


• Effects of prenatal exposure to inorganic arsenic on the mice offspring

  WATANBE Chiho, YOSHINAGA Jun, ENOMOTO Shuichi, SATOH Hiroshi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), The University of Tokyo, 2000 - 2002

  Contamination of groundwater with naturally-derived inorganic arsenic has been reported from various counties in the world, pausing serious threat to more than 50 millions of people. Although the health effects of chronic arsenic exposure has been extensively investigated, its potential effects on developing organisms have scarcely been examined so far. Since developing organism are often more sensitive to environmental threat than the adults, the present study focused on the possible effects of prenatal exposure to inorganic arsenic on fetus and offspring. i) Effect of maternal arsenic exposure on selenium and selenoenzymes in fetus. C57BL/6J mice were exposed to arsenite at doses that would not overt toxicity between GD7-16. On GD17, mice were dissected, and tissue levels of selenium, arsenic and selenoenzymes were determined. Effect of dietary-induced selenium deficiency was also evaluated. It was found that selenium deficiency facilitated the accumulation of arsenic both in motemal and fetal tissues up to 1.5 fold compared to control (Se sufficient) group. Also, arsenic exposure affected the tissue levels of selenium and selenoenzyme activities. Among the observed effects, activity of the thioredoxine reductase (TRxR) in the fetal liver was enhanced and suppressed in Se sufficient and deficient status, respectively ; such modification by Se status was not observed in maternal tissues. These results suggested that the toxicity of arsenic may be enhanced under Se deficiency and that fetus is more sensitive to the change of Se status than adults. li) The behavior of offspring bom to dam mice exposed to arsenic during gestation was examined. At the doses that was not overtly toxic, development of some motor functions were retarded and the open-field behavior at 8wk of age was altered by the arsenic exposure, indicating that prenatal arsenic exposure could result in altered behavior, which was accompanied by some changes in brain monoamines.


• MATHEMATICAL ANALYSIS OF HUMAN SUXUAL BEHAVIOR AND SPREAD OF SEXUALLY TRANSMITTED DISEASES AS A COMPLEX SYSTEM

  KAKEHASHI Masayuki, NAKAZAWA Minato, INABA Hisashi, TSUKUMA Hidehiko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), HIROSHIMA UNIVERSITY, 2000 - 2001

  In the first year, the environment for computer simulation was established and statistical analysis of sexually transmitted disease (STDs) was carried out. Tentative simulation of STD spread were also performed. According to the results of the statistical analysis, influential factors were not clearly identified, suggesting complex situation in the background. By the tentative simulations, importance of groups of different sexual activity was suggested. In the second year, detailed (sex and age specific incidences) STD spread data was analyzed and specific patterns were extracted. These patters were well explained by sex and age specific mathematical model of STD assuming the age-specific contact rates observed in the questionnaire survey. Individual Based Model was also used in the simulation. Two years of analysis revealed that the problem of sexual behavior and sexually transmitted diseases is very complex. We have to continue research for further understanding.


• Anthropological Application of Remote Sensing

  OHTSUKA Ryutaro, NAKASAWA Minato, UNEZAKI Masahiro

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), The University of Tokyo, 2000 - 2001

  The analysis of land cover or land use is a fundamental part for anthropologists, particularly, who are interested in ecological aspects of. the human populations. However, because of the methodological difficulty, the analysis has been limited to very small areas of the short period. In this concern/ remote sensing can be a strong tool for the anthropologists. This study aimed to investigate whether the remote sensing technology can contribute to the land cover/use analysis in anthropology. The study areas are three Papua New Guinea populations: the Oriomo plateau in the lowland, Tari basin in the Highlands, and the Balopa Island in the Northern sea. All the member of the study have collected various land use data in the populations for more than 10 years. For each area, we purchased several remote sensing data in different time period; they are Landsat MSS, Landsat TM, Landsat ETM+ and Ikonos. Major findings are summarizedas follows : (1) change in forest area could be detected by Landsat MSS or TM, but (2) the difference between area of slush-and burn cultivation field and secondary forest could not. (3) Ikonos could divide the stage of shifting cultivation, at least, into three types. (4) Digital Elevation Model was essential for the small-scale analysis of remote sensing. For the anthropologists, the information for the past or neighboring areas of the field have importance for the spatial or longitudinal generalization of the findings. The present study suggested that remote sensing is a strong tool for this point.


• 東京湾漁業従事者の環境と健康:シミュレーションモデルによる三番瀬開発の総合的影響予測とその評価

  中澤 港

  日本学術振興会, 科学研究費助成事業, 奨励研究(A), 東京大学, 1999 - 2000

  本研究は,現在,多面的な予測が必要とされている開発問題である東京湾三番瀬の埋め立て計画の影響を評価することを目的としたものである。 既に昨年の時点で木更津周辺と館山周辺(コントロールとして)で採取してきた水サンプルのデータと,文献資料,千葉県による環境影響予測データを,個人レベルの機会的な故障蓄積に応じて死亡への雪崩がある確率で起こり,その確率がこれらのデータによって与えられる環境に依存して変化するように設定したモデルに組み込み済みであり,漁業従事者の調査によって環境変化がどのようにヒトの生存に影響するかという点についてのデータ収集を続けているが,実際の予測は実施できなかった。その理由は,死亡モデルのさらなる改善を行い,より実際の死亡のプロセスを正しく表現するモデルを構築するのに時間がかかったこと,漁業従事者の調査をより多面的に進める必要があることの他,埋め立て規模縮小計画が発表されたことによって影響評価に必要な条件が変わってきたためである。縮小計画発表後も,環境大臣の現地視察などにより三番瀬をとりまく状況は大きく変化してきている。こうした状況において,影響評価をするためには,たんに自然環境と人間の健康だけではなく,経済的,心理的,文化的なさまざまな側面を踏まえたコストベネフィットの評価が必要であり,生態経済学的なモデル構築が必要とされるが,今年度はその分野の先行研究のレビューを行い,これまではすべてを経済的側面に還元して捉えるCVMのような手法か,Nature Serviceのような意味で自然そのものの価値を評価する手法がほとんどであったことを明らかにし,その中間に位置し,かつ両者を包含するような,多次元で構成される開発影響についての総合的な評価を行うモデル構築の可能性を検討したことも本年度の研究実績である。


• Study on interactions between infectious diseases and host genetic factors in East Asia and Oceania

  TOKUNAGA Katsushi, INAOKA Tsukasa, ISHIDA Takafumi, OHTSUKA Ryutaro, OHASHI Jun, NAKAZAWA Minato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B)., University of Tokyo, 1999 - 2000

  (1) The significant association of TNFA promoter polymorphisms with cerebral malaria was found in malaria patients living in the northwest of Thailand. Also, we detected several HLA-DRB1 and -B alleles associated with severe or cerebral malaria. The TNFR2 polymorphism, 196M/R, was not associated with the disease severity in the malaria patients. (2) The Duffy antigen as a receptor for Plasmodium vivax and Plasmodium knowlesi was analyzed in the malaria-endemic regions of Southeast Asia and Oceania. The Fya-antigens found in this study showed weak reactivity to antisera. Such weak phenotypes are considered to have been maintained in the study populations due to a selective advantage through resistance to malaria. (3) Seroprevalence of antibodies to human T-lymphotropic virus type-1 (HTLV-1) was surveyed among the Thai population. Although Thailand is located between HTLV-1 harboring countries, HTLV-1 was found not to endemic in the Thai population. (4) HLA-DRB1 polymorphism was studied in the Gidra and Balopa populations of Papua New Guinea. The Balopa islanders showed a genetic similarity to Austronesian speaking groups in the Melanesia and also to the Gidra who are Non-Austronesian, while they are distant from the Polynesian and Micronesian populations. This result strongly suggests that the admixture between Austronesian and Non-Austronesian occurred in Papua New Guinea, regardless of their different language.


• 開発による健康への影響に関する数理モデルの一般化とその日本の一地域への適用

  中澤 港

  日本学術振興会, 科学研究費助成事業, 奨励研究(A), 東京大学, 1997 - 1998

  昨年度に引き続き木更津周辺と館山周辺で水サンプルを採取し,分析を進めたが,事情により健康調査は実施に至らず,今後実施する予定である。昨年度ギデラ族のモデルを一般化したが,死亡モデルをより現実に近づけるための改良を行い,またアルゴリズムの改良によってシミュレーション速度を向上させることに成功した。すなわち,死亡モデルについては,従来年齢別死亡ハザードのみを考慮する単純な加速モデルであったが,GAVRILOV and GAVRILOVA(1991)の雪崩モデルを応用して,個人レベルの機会的な故障蓄積に応じて死亡への雪崩がある確率で起こるという形に変更した。この確率が環境依存で変化するように設定することによって,これまで困難であった環境モデルの人口モデルへのダイナミックな結合に成功した。 Alphaチップを使ったコンピュータで高速にシミュレーションを行うためのシステム設定は完了し,いくつかの条件についてシミュレーションを行ったが,検討すべき条件が多岐にわたるため,今のところ新しいモデルを東京湾周辺の人口に適用するには至っていない。この予定の遅れは,高速なシミュレーションのための技術そのものが一般的でないため,ソフトウェア面で独自の開発を行う必要があったためであり,今後条件検討を完了次第,実データの適用を行う予定である。


• Genetic-ecological study on the human population adaptation and survival in two Oceanic populations.

  OHTSUKA Ryutaro, INAOKA Tsukasa, NAKAZAWA Minato, HONGO Tetsuro, ISHIDA Takafumi, TOKUNAGA Katsushi

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), The University of Tokyo, 1996 - 1998

  The present study conclusively compared the two human populations, Gidra and Balopa, living in Papua New Guinea, based on the data collected in long-term fieldwork and analyses of biological specimens and environmental samples, from the viewpoint of adaptation of human population. Major achievements can be summarized as following three points. 1. Disease profiles at an individual level Based on seroepidemiologic analysis for 70-80% adults of the Gidra and Balopa, comparison of disease profiles between the two populations suggested that inter-individual differences of disease experience in the Gidra can mostly be explained by genetic nature and by random exposure to environmental etiological factors, considering that their disease profile mostly consisted of communicable diseases like malaria, and the prevalence of geriatric diseases were markedly low. On the other hand, the Balopa relatively developed Westernized lifestyle and suffered from not only chronic degenerative diseases like diabetes but also imported infectious diseases like viral hepatitis type C. 2. Relationship between the disease profiles and genetic feature or nutritional status HLA-DRB polymorphism, which is known to have relationship with several diseases, and band-3 deletion which causes malaria resistant ovalocytosis were investigated as genetic features. Both results suggested past gene influx and malarial selection force which supported fixation of those genes. About nutritional status. difference in iron nutrition mainly due to differences in dietary pattern differentially affected the occurrence of anemia in various villages where malaria prevalence diversified. 3. Conclusive computer simulation of population dynamics We defined the individual with genetic information, kin relations, and nutritional status, as the struct-type of C language, and conducted computer simulation of population dynamics according to the age-specific death rate fluctuating with nutritional status, genetic factor, and the exposure to malaria, and to the fertility bound to couples, where gene transmission was randomly done from each parent to an offspring. Simulation analyses suggested that the variance of genetic polymorphism tended to increase with the extent of nutritional and malarial effects on the death rate.


• Nutrition of Essential Elements and Exposure to Toxic Elements in Populations of Developing Countries under Modernization.

  UMEZAKI Masahiro, NAKAZAWA Minato, HONGO Tetsuro

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), University of Tokyo, 1996 - 1997

  Both deficiency of essential elements and excess exposure to toxic elements have long been concerned in relation to human health in the developed countries. For populations in developing countries, however, intake and exposure levels of trace elements have scarcely been evaluated in connection with their environmental factors which largely differ from those of the developed countries. Based on analyzes of biological samples(blood, hair, and urine)collected from several populations in Papua New Guinea, inter-population variations of nutritional status of essential elements and exposure levels of toxic elements were evaluated in connection with their environmental conditions, in particular, food consumption pattern, malaria prevalence, and degree of modernization. In the evaluations of zinc nutrition and iron nutrition connected with anemia, it was clarified that malaria infection had the important role to nutritional status of these essential elements and anemia. In addition, food consumption pattern characterized by high dependency on plant foods also playd a significant influence in their trace element nutrition. The populations who keep more traditional lifestyle showed higher zinc intake. Iron nutrition was also sufficient in the most traditional populations and tended to be worsen among modernized populations. Among toxic elements, long-term exposure to methylmercury in fish eating populations was evaluated. Hair and blood mercury concentrations indicated that in heavy fisheating populations, although they are living in the areas remote from anthropogenic sources, methylmercury was accumulated to the level causing renal damage. On the other hand, urinary mercury level which was considered to be the indicator of exposure to inorganic or elemental mercury was increased to the levels of developed countries in modernizing populations. This study concludes that ecological conditions of each population play decisive roles in their intake and exposure levels of trace elements and that further analysis is needed to elucidate adverse effect of rapid modernization.


• Ecology of Long-term Health and Survival in Papua New Guinea

  OHTSUKA Ryutaro, KABUTO Michinori, NAKAZAWA Minato, KAWABE Toshio, INAOKA Tsukasa, ALPERS Michael

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for international Scientific Research, University of Tokyo, 1996 - 1997

  For the Gidra-speaking population, consisting of about 2000 peoples in 13 villages, we clarified (1) detailed population dynamics and migration histories in the last 30 years, (2) reproduction histories of all females, (3) determination of sex hormone levels (estradiol, progesterone and chorionic gonadotropin) of the samples collected from the five villages, (4) estimation of nutritional status based on two-week food consumption surveys. One of the tentative conclusions showed that the mean parity size for women after menopause was 3.6, characterized by the peak at zero parity. The results of analysis of their hormone levels demonstrated that there were no specific features in the zero-parity women and that all pregnancies detected by chorionic gonadotorpin level led to live births. However, further analysis, in which age factors are added, is needed because hormone levels differs from reproductive age to menopausal age. For tha Asaro-speaking population. 2000 peoples in 10 villages, we conducted (1) anthropometry and blood pressure measurements for 313 adults, (2) follow-up study for the women, who were determined as reproductive age in our 1996 survey, about abortion and stillbirth in the last one year, (3) measurements of urea nitrogen and sodium for urine samples collected from the peoples in these villages, (4) behavioral observation for chidren in one village, and (5) observations for the villagers' producing and consuming activities in the same village. In comparison with the Gidra people, the Asaro people were judged more modernized, represented by higher body mass index values (23.7 for males and 24.2 for females on average).


• 熱帯地方の開発が地域住民にもたらす健康影響評価のための数理モデル応用研究

  中澤 港

  日本学術振興会, 科学研究費助成事業, 奨励研究(A), 東京大学, 1996 - 1996

  農業開発や鉱業開発が熱帯雨林にもたらす非可逆的変化が地域住民の生活に与える微視的な影響を,ライフスタイルの変化から自然環境へのフィードバックを含めて評価するために,パプアニューギニア低地のギデラ族を対象とした人口と環境の相互作用を含む数理モデルを構築した。成果としては,マラリアによる人口への影響に関してKyoto Conference for Mathematical Biology '96で発表し,微視的な人口再生産過程についてのシミュレーションモデルをMathematical Population Studiesに公表した。現在のところ,ギデラ族をとりまく環境変化のデータ整理が完了していないため,今年度の最終目的とした森林伐採と上流での採鉱という環境開発が彼らの健康に与える影響予測のシミュレーションは行っていないが,データ整理ができしだいシミュレーションを実施するための準備は完了している。つまり,環境モデルの構築は,ほとんど完了し,人口モデル,遺伝モデルとの結合は容易にできる状態にあるが,環境データの整理が完了するまではどのように結合すべきか決定できず,目下その検討中である。一方,日本で環境開発の健康影響が予想される地域への応用可能性の探索としては,環境データと人口・健康データをある程度のまとまりをもった空間・集団で収集することは極めて困難であったため,当初の構想にあったゴルフ場開発周辺地域を対象とすることは断念し,東京湾内で漁業に従事する人々を対象とするための予備調査を行った。環境評価のためのデータとしては,水サンプルを採集し冷凍保存中であり,これは97年度に分析予定である。


• Research on malaria and related hematological disorders in southwest Pacific region

  ISHII Akira, RZEPCZYK C, LEAFASIA J, NIHEI Naoko, NAKAZAWA Minato, KANAZAWA Tamotsu, OHTA Nobuo, KAWABATA Masato, UCHIDA J

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for international Scientific Research, 1994 - 1995

  Epidemiological survey was conducted in commninity villages of Guadalcanal Island, the Solomon Islands. Malaria is highly endemic being hyper to holoendemic condition. Chloroquine treatments did not change parasite rates for three years in a village whereas primaquine when added to chloroquine reduced parasite rates in two villages. Bed nets impregnated with insecticide seemed to contribute in reducing vectorial capacity of the vector mosquitoe and parasite rates. Hemoglobin abnormalities were detected in 12% of 186 cases indicating 3 types. Polymorphism in promotor region of TNFa gene was anlysed and TNF1 allele was not found to exisit in the study area. Neutrophil chemotactic factor durived from malaria paratie (P.yoeli) was used to measure antibody level in villagers. High titers were found indicating the factor might be a candidate malaria vaccine epitope. Medico-geographical analysis was attempted using satelite images, aerial photos in relation to malaria epidemiology. Human ecologiclal study was conducted in a community village in relation to malaria infection.


• Medico-Ecology of Environmental Change and Health in Oceania

  OHTSUKA Ryutaro, NAGANO Megumi, INAOKA Tsukasa, HONGO Tetsuro

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for international Scientific Research, The University of Tokyo, 1993 - 1995

  Major findings of this research project, which focused on medico-ecological comparison of adaptation and health among the sedente populations in the high alititude and low altitude environments and migrant populations in the urban area, i. e. Port Moresby or the national capital, are summarized as follows. 1. the lowland populations, represented by the Balopa people in Manus Province, had experienced contact with Europeans earlier than other populations, and consequently they were characterized by lowered fertility rate due to family planning practice, high out-migration rate to urban areas, and high prevalence rates of degenerative chronic diseases which were coupled with obese body physique, as shown in the high body mass index (BMI) values (the median for 40-49 age group : 28). 2. The highland populations, represented by the Huli-speaking group in Eastern Highlands Province, have maintained to a considerable degree the traditional lifestyle ; their high energy-expending horticultural work was mostly conducted by females. The food consumption survey revealed that their dietary habit, based largely on sweet potato and other local foods, guaranteed adequate energy and protein intake. The recent medical service has drastically reduced their mortality rate, particularly the infant mortality rate, except the groups living in malaria-endemic lower terrain ; thus, population increase rate has been increased and their population density has reached nearly the carrying capacity. 3. The urban dwellers who migrated from the rural areas had diversified lifestyle and health status, largely owing to the difference of their homelands. The highland-origined people inhabit the spontaneous settlements, whereas the lowland-origined people live in well-planned residential areas. The dietary change to high fat and protein intake was observed in the highland-origined group. Prevalence rates of hypertension and other degenerative chronic diseases were higher in the lowland-origined group, reflecting the change of lifestyle rather than the genetic traits.


• Long-term survival mechanisms of human populations with low increase rates

  OHTSUKA Ryutaro, TOKUNAGA Katsushi, AKAZAWA Takeru, NAKAZAWA Minato

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for General Scientific Research (B), University of Tokyo, 1993 - 1994

  To clarify mechanisms of a human population's long-term survival through generations, this study constructed a set of three models in which its number changes and individual difference of reproduction rates exists. In the second step, our own data of demographic parameters, malaria prevalences according to geographic conditions, and various allele frequencies, which were obtained from a contemporary Gidra-speaking population in Papua New Guinea, were rearranged to be applicable to the models. The first model examined effects of individual difference of fertility. The results proved a markedly smaller number of maintained genes of the parent generation, in comparison with that in the previous gene-pool models : of 200 parents, only 26.5 had offspring at 30th generation ; and, the maximum number of offspring per parent was 300.2. The second model, in which gene diversity was examined among a initial population of 200 males and 200 females, demonstrated that it was significantly lower in the case of monogamy than in the case of polygyny. The third comprehensive model examined long-term human survival, taking into account the effects of infectious diseases on the stable population model. For instance, in cases that the initial population, 1,000 in number, inhabited the interior zone relatively free from such diseases and that individuals over the potential limit based on carrying capacity migrated to peripheral disease-prevalent zone and met with higher mortality, the gene pools differed between the two zones unless the difference of death rate from such diseases between them exceeded 1.0%. These results demonstrate that different gene structure in various loci between the two zones attributed to prevalence of diseases, malaria in particular. Our further analyzes make it possible to model long-term survival of human populations, including prehistoric ones, in more generalized conditions.


• 感染症がヒト個体群の長期間の適応に及ぼす影響のマイクロシミュレーション分析

  中澤 港

  日本学術振興会, 科学研究費助成事業, 奨励研究(A), 東京大学, 1993 - 1993

  ヒト個体群の遺伝子組成に対する感染症の影響を検討するために、既にBrass、Coale、Trussellらによって人口学的に確立している人口モデルを基にして個人ベースの確率モデルに改変し、感染症耐性に関連する遺伝子の伝達を組み入れた。即ち、ある遺伝子をもつ個人ともたない個人の間にマラリア感染時の生残率に差が出ると仮定し、マラリア感染率が高い村落群と低い村落群の間で人口移動があるという条件で、遺伝子伝達シミュレーションを行った。こうしたマイクロシミュレーションによる集団遺伝へのアプローチは1970年代にMacCluerが始めていたが、あまり進展しておらず、とくに感染症との関連を見たものはおそらくこれが最初である。 シミュレーションのためのプログラムはC言語で記述し(約800ステップ)、本研究助成により導入したコンピュータ上で、いくつかのパラメータについて100回ずつの試行をおこなった。現段階では、婚姻の社会的規制の有無や分集団間の距離による婚姻のしやすさの違いを組み込んでおらず、マラリア感染リスクも村落群別に固定してあり、季節変動やヒト個体群との相互作用によってリスクが変動することは表現していない。今後、現実に即した予測などのためには、マラリア感染の確率モデルとの結合が必要とされる。その意味ではプロトタイプだが、人口学、遺伝学と生態学を結び付けるモデルの可能性を示した。この研究結果は平成5年度の日本人類学会・民族学会連合大会で報告済みである。