[Cholesterol 7α-Hydroxylase Gene-204A/C Polymorphism in Normal and Gestational Diabetic Pregnancies]

Area of Science:

• Genetics
• Metabolic Disorders
• Pregnancy Complications

Context:

• Gestational diabetes mellitus (GDM) affects maternal and fetal health.
• Genetic factors may influence GDM susceptibility and progression.
• The cholesterol 7α-hydroxylase gene (CYP7A1) plays a role in bile acid synthesis and cholesterol metabolism.

Purpose:

• To investigate the association between the CYP7A1-204A/C single nucleotide polymorphism (SNP) and blood lipid levels in pregnant women with GDM and normal pregnant women.
• To analyze genotype and allele frequencies of the CYP7A1-204A/C polymorphism in GDM and control groups.
• To explore the relationship between CYP7A1-204A/C variants and metabolic parameters including lipids, glucose, insulin, and apolipoproteins.

Summary:

• No significant difference in allele or genotype frequencies of the CYP7A1-204A/C polymorphism was observed between GDM and control groups.
• In normal pregnant women, the AA genotype was linked to higher apoA1 and lower insulin/HOMA-IR, while the CC genotype was associated with higher TG/apoA1 in non-obese controls.
• In the GDM group, the AA genotype correlated with increased gestational weight gain compared to the CC genotype.

Impact:

• The CYP7A1-204A/C polymorphism is not a risk factor for GDM itself.
• This genetic variant may influence gestational weight gain in women with GDM.
• CYP7A1 variants are associated with specific metabolic profiles (apoA1, insulin, HOMA-IR, TG) in non-GDM pregnant women.