Association between maternal lipid levels in third trimester and gestational diabetes mellitus among Vietnamese women
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Introduction
Gestational diabetes mellitus (GDM) amplified the physiological alterations of maternal serum lipid levels in the third trimester, with higher triglycerides (TG) and lower high-density lipoprotein cholesterol (HDL-C) levels. No studies about the association between maternal lipid levels in the third trimester and the risk of GDM in Vietnamese population.
Method
a cross-sectional study on 1022 healthy females with singleton pregnancy delivered at Bach Mai hospital from May 2023 to June 2024. Measure fasting serum total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) and triglycerides at 28 – 40 weeks of gestation by color enzymatic assays. Assess the association between maternal serum lipid levels with GDM by multivariate logistic regression.
Results
After adjusting for maternal age, pre-pregnancy body mass index (BMI), history of GDM, history of macrosomic neonates and family history of diabetes mellitus, every unit elevation of TG level was associated with increased risk of GDM (OR=1.25, 95% CI: 1.07 – 1.47); every unit elevation of LDL-C was associated with decreased risk of GDM (OR=0.61; 95%CI: 0.40 – 0.95). The association of LDL-C was significant in 33-36 weeks group (OR=0.35, 95% CI: 0.14 – 0.86). TG was significantly associated with GDM in 37 – 40 weeks group (OR=1.72; 95% CI: 1.32 – 2.25). To predict GDM, optimal cut-off points of LDL-C were ≤3.17 (for the third trimester) and ≤3.25 (for 33 – 36 weeks) while the threshold of TG were ≥3.30 (for the third trimester) and ≥3.31mmol/L (for 37 – 40 weeks).
Conclusion
Among Vietnamese population, LDL-C and TG were independent associated factors of GDM in the third trimester. Elevated level of TG was a risk factor, whereas low level of LDL-C was a protective factor of GDM.
