Development of carbohydrate intolerance in offspring of Asian Indian conjugal type 2 diabetic parents

Area of Science:

• Endocrinology
• Metabolic Disorders
• Genetics

Background:

• Offspring of conjugal diabetic parents (OCDP) have an increased genetic predisposition to diabetes.
• Longitudinal studies are crucial for understanding the progression of glucose metabolism abnormalities in at-risk populations.

Purpose of the Study:

• To assess the development of abnormal glucose tolerance in initially normoglycemic offspring of diabetic parents over a 4-9 year period.
• To identify baseline predictors of abnormal glucose tolerance in this high-risk cohort.

Main Methods:

• A longitudinal study of 64 offspring of conjugal diabetic parents (OCDP) initially normoglycemic.
• Follow-up retesting after 4-9 years to assess glucose tolerance (GTT).
• Analysis of baseline parameters including plasma glucose (sigma PG), insulin increment (delta IRI), and insulin-to-glucose ratios, stratified by obesity status.

Main Results:

• 15.6% developed diabetes, 29.7% developed impaired glucose tolerance (IGT), and 54.7% remained normoglycemic.
• In non-obese OCDP, higher baseline sigma plasma glucose and delta IRI were associated with abnormal glucose tolerance.
• Baseline sigma plasma glucose significantly predicted final 2-hour plasma glucose in all OCDP and non-obese OCDP.

Conclusions:

• A significant proportion of initially normoglycemic offspring of diabetic parents develop glucose intolerance over time.
• Baseline plasma glucose is a key predictor of future glucose intolerance, particularly in non-obese individuals at high genetic risk for diabetes.