Cited by 169Pancreatic function and diabetesGenetic Associations and EpidemiologyDiabetes, Cardiovascular Risks, and Lipoproteins

Heritability of Insulin Secretion, Peripheral and Hepatic Insulin Action, and Intracellular Glucose Partitioning in Young and Old Danish Twins

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Poulsen, Pernille, Levin, Klaus, Petersen, Inge, Christensen, Kaare, Beck-Nielsen, Henning, Vaag, Allan·2005·Diabetes

Abstract

The etiology of type 2 diabetes is multifactorial, including genetic as well as pre- and postnatal factors that influence several different defects of glucose homeostasis, primarily in muscle, β-cells, and liver. In the present twin study, we report heritability estimates (h2) for measures of insulin secretion, insulin resistance, hepatic glucose production (HGP), and intracellular glucose partitioning using gold standard methods (euglycemic-hyperinsulinemic clamp technique, tritiated glucose infusion, indirect calorimetry, and intravenous glucose tolerance testing) among 110 younger (22–31 years of age) and 86 older (57–66 years of age) twins. To obtain a valid estimate of β-cell function, insulin secretion was adjusted for the individual degree of insulin action (disposition index). In both age-groups there was a major genetic component in the etiology of insulin secretion that was statistically significantly higher among older twins (young h2 = 0.75 [0.55–0.86] and old h2 = 0.84 [0.69–0.92], P < 0.05). The heritability estimates for peripheral insulin sensitivity (young h2 = 0.53 [0.28–0.71] and old h2 = 0.55 [0.20–0.76]) and nonoxidative glucose metabolism (young h2 = 0.50 [0.32–0.64] and old h2 = 0.48 [0.04–0.72]) were similar in younger and older twins, supporting the notion of both genetic and environmental etiological factors in the control of insulin action and nonoxidative glucose metabolism. The results suggested that HGP was predominantly controlled by nongenetic factors in both young and old twins. In conclusion, we provide further evidence for a role of genes in controlling insulin secretion, insulin action, and nonoxidative glucose metabolism. The relative contribution of genes versus environment on in vivo insulin secretion exhibited an age dependency with a slightly greater relative impact of genes among older as compared with younger twins.

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  1. Mednick SA, Baert AE, Bachmann BP, Eds. Oxford, U.K., Oxford University Press, 1981, p. 217-221

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Authors
Poulsen, P., Levin, K., Petersen, I., Christensen, K., Beck-Nielsen, H., & Vaag, A.
Affiliations
  • Steno Diabetes Center, Gentofte, Denmark
  • Odense University Hospital (DK)
  • University of Southern Denmark (DK)
  • Odense University Hospital, Odense, Denmark
Venue
Diabetes
Published
2005-01-01
Volume
54
Issue
1
Pages
275-283
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2143531355
Cited by
166
References
35
Citations by year
2025: 3 · 2024: 3 · 2023: 1 · 2022: 9 · 2021: 6 · 2020: 4 · 2019: 10 · 2018: 6 · 2017: 7 · 2016: 7 · 2015: 6 · 2014: 10 · 2013: 9 · 2012: 5
FWCI
13.63
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
heritability, insulin secretion, insulin resistance, hepatic glucose production, beta-cell function, disposition index, nonoxidative glucose metabolism, age differences, genetic versus environmental factors, twins
MeSH terms
Insulin Secretion, Adult, Aging, Blood Glucose, Denmark, Female, Glucose, Glycolysis, Humans, Insulin, Liver, Male, Middle Aged, Glucose Clamp Technique

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