The relationship between thyroid dysfunction during pregnancy and gestational diabetes mellitus

Area of Science:

• Endocrinology
• Obstetrics
• Metabolic Disorders

Background:

• Thyroid dysfunction and gestational diabetes (GDM) are common pregnancy endocrine disorders.
• Thyroid abnormalities are linked to insulin resistance and carbohydrate metabolism changes.
• Evaluating thyroid function in GDM patients is crucial due to metabolic associations.

Purpose of the Study:

• To investigate thyroid hormone level abnormalities in pregnant women diagnosed with GDM.
• To determine if thyroid dysfunction indicators are present in GDM cases.

Main Methods:

• Retrospective analysis of 662 pregnant women's medical records (2017-2019).
• Two groups: 412 with GDM and 250 with normal glucose tolerance.
• Analyzed serum concentrations of TSH, FT4, FT3, FT3:FT4 ratio, and fasting plasma glucose.

Main Results:

• GDM patients exhibited significantly higher TSH and FT3 concentrations (p < 0.0001).
• Lower FT4 concentrations (p < 0.0001) were observed in the GDM group.
• A significantly higher FT3:FT4 ratio was found in women with GDM (p < 0.0001).

Conclusions:

• Elevated TSH and FT3, coupled with low FT4 and a high FT3:FT4 ratio, may indicate an increased risk for GDM development.
• These findings suggest a potential link between specific thyroid hormone profiles and GDM.
• Further research is warranted to confirm these associations and their clinical implications.