Long-range implications for the mother. The Aberdeen experience

Area of Science:

• Endocrinology
• Metabolic Disorders
• Women's Health

Background:

• Post-pregnancy impaired glucose tolerance (IGT) is a risk factor for future diabetes.
• Long-term outcomes and effective management strategies for IGT require further investigation.

Purpose of the Study:

• To assess the long-term glucose tolerance in women diagnosed with IGT after pregnancy.
• To compare the efficacy of chlorpropamide versus diet alone in managing IGT.
• To identify factors associated with the progression of IGT.

Main Methods:

• A longitudinal follow-up study of 112 women with post-pregnancy IGT diagnosed via intravenous glucose tolerance test (IVGTT).
• Participants were treated with either chlorpropamide or diet only.
• Assessment included IVGTT, fasting plasma glucose (FPG), and islet cell antibody (ICA) testing over up to 22 years.

Main Results:

• After a mean follow-up of 12.9 years, 35% of women had abnormal IVGTT, and less than 7% had overt diabetes.
• Chlorpropamide showed no significant benefit over diet alone.
• Factors associated with worsening glucose tolerance included older age at diagnosis/follow-up and higher initial FPG (≥5.8 mM).
• Obesity was linked to increased vascular complications but not directly to glucose tolerance deterioration.
• ICA were weakly positive in 12.5% of subjects and did not correlate with glucose tolerance outcomes.

Conclusions:

• Dietary management appears crucial for long-term glucose tolerance in women with post-pregnancy IGT.
• Age and initial FPG are key predictors of IGT progression.
• The prevalence of IGT and diabetes was lower in this cohort compared to others, potentially due to sustained dietary interventions.