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Genetic variation in TCF7L2 rs7903146 and history of GDM negatively and independently impact on diabetes-associated metabolic traits.
Diabetes Res. Clin. Pract. 146, 251-257 (2018)
Aims: Gestational diabetes (GDM) is recognized as a major risk factor for the development of type 2 diabetes (T2DM) later in life. Risk allele carriers at TCF7L2 rs7903146 have increased susceptibility for both GDM and T2DM. We hypothesized that carrying TCF7L2 risk alleles would further aggravate the negative impact of a positive history for GDM on metabolic traits related to T2DM later in life.Methods: 210 women with a confirmed history of gestational diabetes and 810 controls without evidence for GDM underwent standardized 75 g oral glucose tolerance tests (OGTT). Liver fat was quantified in a subset of subjects (n = 444) using magnetic resonance spectroscopy.Results: 504 women were homozygous or heterozygous risk allele carriers. The risk allele carriers had a higher risk for GDM (p = 0.0076, OR 1.52, 95% CI 1.11-2.06). Multivariable regression analysis demonstrated that both a history of GDM, or carrying a TCF7L2 risk allele resulted in lower insulin secretion, impaired proinsulin processing and higher fasting and 2-hour glucose levels. Liver fat content was not associated with either a history of GDM or a TCF7L2 risk genotype. There was no significant interaction (all p > 0.05) between history of GDM and TCF7L2 risk alleles on all diabetes-associated metabolic traits tested.Conclusion: The TCF7L2 rs7903146 polymorphism is a risk factor for gestational diabetes. However, the additional presence of TCF7L2 rs7903146 risk alleles does not further aggravate the negative impact of a history of gestational diabetes on metabolic traits related to T2DM. (C) 2018 Elsevier B.V. All rights reserved.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Gestational Diabetes ; Type 2 Diabetes ; Oral Glucose Tolerance Test ; Tcf7l2 ; Insulin Sensitivity ; Liver Fat; Insulin-secretion; Risk; Polymorphisms; Glucose; Variants; Women; Sensitivity; Mellitus; Prevention; Resistance
ISSN (print) / ISBN
0168-8227
e-ISSN
1872-8227
Quellenangaben
Volume: 146,
Pages: 251-257
Publisher
Elsevier
Publishing Place
Elsevier House, Brookvale Plaza, East Park Shannon, Co, Clare, 00000, Ireland
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Reviewing status
Peer reviewed