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Updated: Aug 11, 2026
10:17
An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
Published on: November 3, 2010
Genetic variation in aldosterone synthase predicts plasma glucose levels
1Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305-5120, USA. koustubh.ranade@bms.com
Summary
Genetic variations in the aldosterone synthase gene are linked to altered plasma glucose levels. This suggests a novel role for aldosterone in regulating blood sugar and diabetes risk.
Area of Science:
- Endocrinology
- Genetics
- Metabolic Disorders
Background:
- Aldosterone is a mineralocorticoid hormone primarily involved in sodium balance and blood pressure regulation.
- Its role in glucose metabolism has not been extensively studied.
Purpose of the Study:
- To investigate the association between genetic variations in the aldosterone synthase gene and plasma glucose levels.
- To explore a potential link between aldosterone regulation and glucose homeostasis.
Main Methods:
- Analysis of single-nucleotide polymorphisms (SNPs) in the aldosterone synthase gene.
- Association study with fasting and post-oral glucose challenge plasma glucose levels in Chinese and Japanese populations.
Main Results:
- Significant association found between two specific SNPs (T-344C promoter and Arg-173 amino acid substitution) and fasting, 60-min, and 120-min plasma glucose levels.
- Homozygotes for the associated variants (Arg-173 and -344C) showed increased likelihood of diabetes and impaired fasting glucose.
- An intronic variant showed no association with glucose levels.
Conclusions:
- The aldosterone synthase gene polymorphisms are significantly associated with variations in plasma glucose levels.
- These findings suggest a previously unrecognized role for aldosterone in glucose homeostasis.
- This genetic link may contribute to understanding the pathophysiology of diabetes.
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