Central Obesity and Disease Risk in Japanese Americans - Full Text View

Purpose

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.

Condition

Cardiovascular Diseases
Heart Diseases
Atherosclerosis
Hypertension
Obesity
Diabetes Mellitus, Non-Insulin Dependent
Hyperinsulinism
Insulin Resistance
Coronary Arteriosclerosis
Diabetes Mellitus
Metabolic Syndrome X

MedlinePlus related topics:

Diabetes Heart Diseases High Blood Pressure Metabolic Syndrome Obesity

U.S. FDA Resources

Study Type:	Observational
Study Design:	Natural History

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date:	February 1993
Estimated Study Completion Date:	January 1998

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.

Eligibility

Ages Eligible for Study:	45 Years to 74 Years
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

No eligibility criteria

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00005365

Sponsors and Collaborators

National Heart, Lung, and Blood Institute (NHLBI)

Investigators


Investigator:	Wilfred Fujimoto	University of Washington

More Information

Publications:

Weigle DS, Ganter SL, Kuijper JL, Leonetti DL, Boyko EJ, Fujimoto WY. Effect of regional fat distribution and Prader-Willi syndrome on plasma leptin levels. J Clin Endocrinol Metab. 1997 Feb;82(2):566-70.

Boyko EJ, Leonetti DL, Bergstrom RW, Fujimoto WY. Fasting insulin level underestimates risk of non-insulin-dependent diabetes mellitus due to confounding by insulin secretion. Am J Epidemiol. 1997 Jan 1;145(1):18-23.

Boyko EJ, Leonetti DL, Bergstrom RW, Newell-Morris L, Fujimoto WY. Visceral adiposity, fasting plasma insulin, and lipid and lipoprotein levels in Japanese Americans. Int J Obes Relat Metab Disord. 1996 Sep;20(9):801-8.

Fujimoto W, Boyko EJ, Leonetti DL, Bergstrom R, Newell-Morris L, Wahl PW. Hypertension in Japanese Americans: the Seattle Japanese-American Community Diabetes Study. Public Health Rep. 1996;111 Suppl 2:56-8.

Boyko EJ, Leonetti DL, Bergstrom RW, Newell-Morris L, Fujimoto WY. Low insulin secretion and high fasting insulin and C-peptide levels predict increased visceral adiposity. 5-year follow-up among initially nondiabetic Japanese-American men. Diabetes. 1996 Aug;45(8):1010-5.

Fujimoto WY, Bergstrom RW, Boyko EJ, Leonetti DL, Newell-Morris LL, Wahl PW. Susceptibility to development of central adiposity among populations. Obes Res. 1995 Sep;3 Suppl 2:179S-186S. Review.

Chen KW, Boyko EJ, Bergstrom RW, Leonetti DL, Newell-Morris L, Wahl PW, Fujimoto WY. Earlier appearance of impaired insulin secretion than of visceral adiposity in the pathogenesis of NIDDM. 5-Year follow-up of initially nondiabetic Japanese-American men. Diabetes Care. 1995 Jun;18(6):747-53.

Boyko EJ, Leonetti DL, Bergstrom RW, Newell-Morris L, Fujimoto WY. Visceral adiposity, fasting plasma insulin, and blood pressure in Japanese-Americans. Diabetes Care. 1995 Feb;18(2):174-81.

Fujimoto WY, Bergstrom RW, Boyko EJ, Kinyoun JL, Leonetti DL, Newell-Morris LL, Robinson LR, Shuman WP, Stolov WC, Tsunehara CH, et al. Diabetes and diabetes risk factors in second- and third-generation Japanese Americans in Seattle, Washington. Diabetes Res Clin Pract. 1994 Oct;24 Suppl:S43-52. Review.

Tsai EC, Boyko EJ, Leonetti DL, Fujimoto WY. Low serum testosterone level as a predictor of increased visceral fat in Japanese-American men. Int J Obes Relat Metab Disord. 2000 Apr;24(4):485-91.

Fujimoto WY, Bergstrom RW, Boyko EJ, Chen KW, Leonetti DL, Newell-Morris L, Shofer JB, Wahl PW. Visceral adiposity and incident coronary heart disease in Japanese-American men. The 10-year follow-up results of the Seattle Japanese-American Community Diabetes Study. Diabetes Care. 1999 Nov;22(11):1808-12.

McNeely MJ, Boyko EJ, Weigle DS, Shofer JB, Chessler SD, Leonnetti DL, Fujimoto WY. Association between baseline plasma leptin levels and subsequent development of diabetes in Japanese Americans. Diabetes Care. 1999 Jan;22(1):65-70.

Chessler SD, Fujimoto WY, Shofer JB, Boyko EJ, Weigle DS. Increased plasma leptin levels are associated with fat accumulation in Japanese Americans. Diabetes. 1998 Feb;47(2):239-43.

Study ID Numbers:	4252
First Received:	May 25, 2000
Last Updated:	June 23, 2005
ClinicalTrials.gov Identifier:	NCT00005365
Health Authority:	United States: Federal Government

Study placed in the following topic categories:

Atherosclerosis

Myocardial Ischemia

Overweight

Arteriosclerosis

Body Weight

Hyperinsulinism

Signs and Symptoms

Syndrome X

Nutrition Disorders

Abdominal obesity metabolic syndrome

Arterial Occlusive Diseases

Obesity

Metabolic Syndrome X

Heart Diseases

Metabolic Diseases

Vascular Diseases

Diabetes Mellitus

Endocrine System Diseases

Ischemia

Coronary Disease

Diabetes Mellitus, Type 2

Overnutrition

Endocrinopathy

Insulin Resistance

Metabolic disorder

Glucose Metabolism Disorders

Coronary Artery Disease

Hypertension

Additional relevant MeSH terms:

Pathologic Processes

Disease

Syndrome

Cardiovascular Diseases

ClinicalTrials.gov processed this record on October 15, 2008

Sponsored by:	National Heart, Lung, and Blood Institute (NHLBI)
Information provided by:	National Heart, Lung, and Blood Institute (NHLBI)
ClinicalTrials.gov Identifier:	NCT00005365