Central Obesity and Disease Risk in Japanese Americans

Completed

• Conditions: Insulin Resistance; Coronary Arteriosclerosis; Cardiovascular Diseases; Obesity; Hypertension; Diabetes Mellitus, Non-insulin Dependent; Diabetes Mellitus; Metabolic Syndrome X; Heart Diseases; Atherosclerosis

• Registration Number: NCT00005365
• Lead Sponsor: University of Washington

Brief Summary

To conduct a longitudinal study of central obesity and related risk factors found to be associated with hypertension and atherosclerotic cardiovascular disease (ASCVD) in a previously-examined cross-sectional cohort of second-generation Japanese Americans and in a newly-recruited cohort of third generation Japanese Americans.

Detailed Description

BACKGROUND:

The study was conducted in response to a program announcment issued in 1991 on obesity and tests the hypothesis that atherosclerotic cardiovascular disease (ASCVD), hypertension, and/or non-insulin dependent diabetes mellitus (NIDDM) develop in Japanese Americans when there is a truncal pattern of weight gain (central adiposity), which is in turn accompanied by insulin resistance, hyperinsulinemia, and lipid abnormalities. This cluster of abnormalities has been called 'Syndrome X'. It is postulated that 'Syndrome X' develops in Japanese Americans in response to environmental (behavioral) factors, many of which reflect 'westernization' in this ethnic group. The research plan focuses upon the relationship between central obesity and metabolic changes and disease outcomes associated with 'Syndrome X' along with the behavioral variables that potential risk factors for the development of this cluster of abnormalities.

DESIGN NARRATIVE:

The cohort was re-examined for diabetes, hypertension, coronary heart, disease, peripheral vascular disease, and a number of potential coronary heart disease risk factors including medical history, health practice, social history, diet, glycosylated hemoglobin, insulin, proinsulin, c-peptide, glucose, anthrometric measurements, lipids, and computed tomography on the thorax, abdomen, and thigh.

Study Timeline

• Study Start: 1993-02
• Study Completion: 1998-01
• Study First Submitted: 2000-05-25
• Study First Submitted QC: 2000-05-25
• Study First Posted: 2000-05-26
• Status Verified: 2004-08
• Last Update Submitted: 2016-02-08
• Last Update Posted: 2016-02-10

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: Not specified

Inclusion Criteria

Not provided

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Exclusion Criteria

Not provided

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified