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Interactions of genes with alcohol consumption affect insulin sensitivity and beta cell function
Qi Fu1, Hao Dai1, Sipeng Shen2
1Department of Endocrinology and Metabolism, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Diabetologia
|October 19, 2024
Summary
Genetic variants like rs56221195 influence how alcohol affects insulin sensitivity and diabetes risk in individuals with normal glucose tolerance. Understanding this interaction is key for personalized health recommendations.
Area of Science:
- Metabolic disease research
- Human genetics
- Diabetes epidemiology
Background:
- Alcohol consumption's impact on metabolic health is complex and varies significantly between individuals.
- Genetic factors are suspected to contribute to this heterogeneity in response to alcohol.
- Understanding these genetic influences is crucial for managing diabetes and metabolic disorders.
Purpose of the Study:
- To identify genetic variants that modulate the effects of alcohol consumption on insulin sensitivity and pancreatic beta-cell function.
- To investigate these interactions within a population exhibiting normal glucose tolerance (NGT).
Main Methods:
- Recruited over 10,000 participants across multiple cohorts for discovery and validation.
- Assessed insulin sensitivity and beta-cell function using oral glucose tolerance tests (OGTT).
- Conducted genome-wide association studies (GWAS) to identify interacting variants and validated findings, including Cox regression in the UK Biobank.
Main Results:
- A significant interaction between the rs56221195 variant and alcohol consumption was found to affect liver insulin resistance index (LIRI).
- Alcohol consumption did not impact LIRI in wild-type carriers but showed a negative association in heterozygous and homozygous carriers.
- The rs56221195 variant also interacted with alcohol consumption to influence insulin secretion and was linked to type 2 diabetes risk.
Conclusions:
- The interaction between alcohol consumption and the rs56221195 genetic variant significantly impacts hepatic insulin sensitivity in individuals with normal glucose tolerance.
- These findings highlight the importance of considering genetic background when advising on alcohol consumption due to potential differential health effects.
Keywords:
Alcohol consumptionBeta cell functionGene–environment interactionsInsulin sensitivityType 2 diabetesMore Related Videos
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