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Epidemiology of Obesity, Diabetes, and Hypertension in African Caribbeans

非洲加勒比地区肥胖、糖尿病和高血压的流行病学

基本信息

批准号：
9752328
负责人：
IVA MILJKOVIC
金额：
$ 69.61万
依托单位：
UNIVERSITY OF PITTSBURGH AT PITTSBURGH
依托单位国家：
美国
项目类别：
财政年份：
2018
资助国家：
美国
起止时间：
2018-08-01 至 2022-07-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/9752328
关键词：
Address Adipose tissue Affect African African American African Caribbean Age Aging Alcohol consumption American Archives Behavioral Blood Pressure Blood Vessels Body Composition Body fat Body measure procedure Cardiovascular Diseases Caribbean region Caucasians Collection Coronary Artery Risk Development in Young Adults Study Cost of Illness DNA Data Diabetes Mellitus Disease Dual-Energy X-Ray Absorptiometry Epidemic Epidemiology Ethnic Origin Family Fatty acid glycerol esters Fishes Foundations Funding Future Growth Health High Prevalence Hypertension Image Infrastructure Intake Knowledge Life Style Longitudinal Studies Low Prevalence Measures Medical Menarche Menopause Metabolism Non-Insulin-Dependent Diabetes Mellitus Nutritional Obesity Organ Overweight Phenotype Population Population Research Prevalence Procedures Process Protocols documentation RNA Race Reading Recording of previous events Reporting Research Resources Risk Risk Factors Sampling Skeletal Muscle Sleep Smoking Specimen Thinness Time Tobago Ultrasonography Visceral Weight West Indies Woman base biobank cardiometabolism cardiovascular health circulating biomarkers cohort cost cost effective epidemiology study ethnic disparity experience fruits and vegetables high risk insight lifestyle factors men microbial novel parity population based protective factors racial and ethnic disparities recruit reproductive sedentary lifestyle sex

项目摘要

PROJECT SUMMARY/ABSTRACT Obesity is a very strong risk factor for type 2 diabetes (T2D) and hypertension, which disproportionately affect African ancestry populations. The Caribbean region in particular is experiencing an enormous epidemic of cardio-metabolic disease, with obesity, T2D, and hypertension being considerably higher in African Caribbeans compared to Caribbeans of other race/ethnicities. Despite the current and projected growth in obesity, T2D and hypertension among African Caribbeans, the mechanisms underlying racial/ethnic disparities in these devastating and costly conditions remain largely unknown. T2D and hypertension are driven in part by obesity and body fat distribution, especially fat around and within non-adipose tissue organs (known as ectopic adiposity). Our recent discovery that ectopic skeletal muscle adiposity contributes to incident T2D and hypertension in African Caribbean men supports the hypothesis that ectopic adiposity may be a key risk factor contributing to increased risk of T2D and hypertension in African Caribbean populations. However, in contrast to African Caribbean men, very little is known about the importance of body fat distribution and ectopic adiposity for T2D, hypertension, and resultant cardiovascular disease in African Caribbean women. Our preliminary data underscores the need to extend research to include African Caribbean women to unravel the sex-specific and obesity-related mechanisms for T2D, hypertension and cardiovascular disease (CVD) and to discover novel factors related to these major conditions in African ancestry populations. Over the past 20 years we have been studying a unique population-based cohort of African Caribbean men from Tobago. We now propose to expand our research on obesity, T2D, hypertension, and CVD among African Caribbean men to include African Caribbean women in Tobago. We will collect data on lifestyle and medical factors, anthropometrics, DXA and CT body composition measures, carotid ultrasound measures of subclinical cardiovascular disease, and create a specimen biobank for future proposals using our existing infrastructure and well-established procedures. In these newly recruited women, we propose to: 1) determine the overall, and age- and BMI- specific prevalence of T2D and hypertension in African Caribbean women in Tobago, and compare the prevalence with our existing data in men; 2) identify traditional and novel lifestyle, cultural, behavioral, reproductive, nutritional, and medical-related risk factors for T2D and hypertension among African Caribbean women, and 3) evaluate the association of body fat distribution and ectopic adiposity in African Caribbean women with prevalent T2D and hypertension, and compare these associations with those previously observed in African Caribbean men. In addition to accomplishing these aims, the collection and archiving of vital specimens and measures (e.g., fecal samples for microbial distribution; DNA and RNA extraction for omics based approaches), and reading of archived vascular images for subclinical CVD will create the foundation for subsequent, focused funding proposals. Finally, combined with our existing data in men, our study will provide a rich resource for the long-term study of cardio-metabolic health among African Caribbeans and enable future comparisons to similarly phenotyped cohorts of African Americans.

项目总结/文摘