Cited by 536Diabetes, Cardiovascular Risks, and LipoproteinsPancreatic function and diabetesAdipokines, Inflammation, and Metabolic Diseases

Increased insulin resistance and insulin secretion in nondiabetic African-Americans and Hispanics compared with non-Hispanic whites. The Insulin Resistance Atherosclerosis Study

Haffner, Steven M, Ralph, D'Agostino, Saad, Mohammed F, Rewers, Marian, Mykkänen, Leena, Selby, Joseph, Howard, George, Savage, Peter J +3 more·1996·Diabetes

Abstract

The etiology of NIDDM is still controversial, with both insulin resistance and decreased insulin secretion postulated as potential important factors. African-Americans and Hispanics have a two- to threefold excess risk of developing NIDDM compared with non-Hispanic whites. Yet little is known concerning the prevalence of insulin resistance and secretion defects in minorities, especially in African-Americans in population-based studies. Fasting and 2-h post-glucose load glucose and insulin levels, insulin-mediated glucose disposal (insulin sensitivity index) (S(I)), glucose effectiveness (S(G)), and first-phase insulin response (acute insulin response [AIR]) were determined in nondiabetic African-Americans (n= 288), Hispanics (n= 363), and non-Hispanic whites (n= 435) as part of the Insulin Resistance Atherosclerosis Study. Subjects received a standard 2-h oral glucose tolerance test on the first day and an insulin-modified frequently sampled intravenous glucose tolerance test on the second day. African-Americans and Hispanics were more obese than non-Hispanic whites. Both African-Americans and Hispanics had higher fasting and 2-h insulin concentrations and AIR but lower S(I) than non-Hispanic whites. No ethnic difference was observed in S(G). After further adjustments for obesity, body fat distribution, and behavioral factors, African-Americans continued to have higher fasting and 2-h insulin levels and AIR, but lower S(I) than non-Hispanic whites. In contrast, after adjustment for these covariates, no significant ethnic differences in S(I) or fasting insulin levels were observed between Hispanics and non-Hispanic whites. Hispanics continued to have higher 2-h insulin levels and AIRs than those in non-Hispanic whites. In this report, the association between S(I) and upper body adiposity (waist-to-hip, ratio) was similar in each ethnic group. Both nondiabetic African-Americans and Hispanics have increased insulin resistance and higher AIR than nondiabetic non-Hispanic whites, suggesting that greater insulin resistance may be in large part responsible for the higher prevalence of NIDDM in these minority groups. However, in Hispanics. the greater insulin resistance may be due to greater adiposity and other behavioral factors.

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Crossref · 10.2337/diab.45.6.742

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Authors
Haffner, S. M., Ralph, D., Saad, M. F., Rewers, M., Mykkänen, L., Selby, J., Howard, G., Savage, P. J., Hamman, R. F., Wegenknecht, L. E., & Bergman, R. N.
Affiliations
  • The University of Texas at San Antonio Health Science Center (US)
  • Department of Public Health Sciences, Bowman Gray School of Medicine Winston-Salem, North Carolina
  • University of Southern California (US)
  • University of Colorado Anschutz (US)
  • Department of Medicine, University of Texas Health Science Center at San Antonio San Antonio, Texas
  • Kaiser Permanente (US)
  • Atrium Health Wake Forest Baptist (US)
  • National Institutes of Health (US)
Venue
Diabetes
Published
1996-06-01
Volume
45
Issue
6
Pages
742-748
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2121083878
Cited by
536
References
0
Citations by year
2026: 2 · 2025: 12 · 2024: 5 · 2023: 9 · 2022: 18 · 2021: 15 · 2020: 19 · 2019: 17 · 2018: 17 · 2017: 16 · 2016: 23 · 2015: 15 · 2014: 20 · 2013: 18 · 2012: 23
FWCI
7.76
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5u01hl047890-09, 5u01hl047887-09, 5u01hl047889-09)
  • National Heart, Lung, and Blood Institute (HL-47889, HL‐47890, HL47887)
  • NIH Clinical Center
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
insulin resistance, insulin secretion, type 2 diabetes, African Americans, Hispanic Americans, ethnic differences, insulin sensitivity index, acute insulin response, glucose effectiveness, obesity, Insulin Resistance Atherosclerosis Study
MeSH terms
Insulin Secretion, Africa, Analysis of Variance, Arteriosclerosis, Black or African American, Blood Glucose, Cross-Sectional Studies, Diet, Female, Glucose Tolerance Test, Hispanic or Latino, Humans, Insulin, Insulin Resistance, Male, Mexico, Middle Aged, United States, Black People, White People

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