Is thyroid autoimmunity associated with gestational diabetes mellitus?

Area of Science:

• Endocrinology
• Immunology
• Obstetrics

Background:

• Inflammatory markers are linked to diabetes mellitus development.
• Thyroid peroxidase antibodies (TPOAbs) are associated with autoimmune thyroid disease.
• The predictive role of TPOAbs in gestational diabetes mellitus (GDM) remains unclear.

Purpose of the Study:

• To investigate whether TPOAbs detected in early pregnancy can predict the development of GDM.
• To identify independent predictors of GDM in a cohort of pregnant women.

Main Methods:

• A cohort of 619 pregnant women without prior diabetes were assessed for TPOAb positivity.
• Gestational diabetes mellitus (GDM) was diagnosed using a universal screening protocol and Third Workshop-Conference criteria.
• Bivariate and multivariate logistic regression analyses were performed, with TPOAb positivity as a potential predictor.

Main Results:

• The prevalence of TPOAb positivity was 10%, and GDM occurred in 6.9% of women.
• No significant difference in GDM rates was observed between TPOAb-positive (8.1%) and TPOAb-negative (6.8%) women.
• Maternal age, prior GDM, and family history of diabetes were identified as independent predictors of GDM, while TPOAb positivity was not.

Conclusions:

• TPOAb positivity in early pregnancy is not a significant predictor of GDM.
• Established risk factors like maternal age, previous GDM, and family history are key predictors of GDM.