ArticleBMC pregnancy and childbirth2025
Mediating effects of maternal blood lipids and glucose on the relationship between pre-pregnancy body mass index and newborn birth weight in women with gestational diabetes mellitus.
Article in BMC pregnancy and childbirth, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- [Causal Multiple Mediation Analysis of the Association Between Early and Mid-Pregnancy Body Mass Index Trajectories and Preterm Birth].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2026Article
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8 authors.
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Abstract
backgroundThe effect of maternal blood lipids and glucose on the relationship between pre-pregnancy body mass index (BMI) and newborn birthweight (NBW) in pregnant women with gestational diabetes mellitus (GDM) remains unclear. This study aimed to examine whether maternal blood lipids and glucose mediate the relationship between pre-pregnancy BMI and NBW in pregnant women with GDM.
methodsA retrospective study was conducted on 1257 women with GDM who gave birth at the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China, between November 2017 and July 2021. Maternal blood lipids were measured at the first prenatal care (6-13 weeks of gestation). Glucoses, including mid-pregnancy fasting plasma glucose (FPG) and post-load glucose, were measured at 24-28 gestational weeks using an oral glucose tolerance test (OGTT). Multivariable linear regression was used to evaluate the significance of assumed paths. According to the results of multivariable linear regression, significant lipids and glucose were included in a multiple mediation analysis as mediators. Sensitivity analysis was performed to verify the robustness of the results.
resultsEarly-pregnancy high-density lipoprotein cholesterol (HDL-C) and mid-pregnancy FPG were associated with pre-pregnancy BMI and NBW. Early-pregnancy HDL-C was associated with mid-pregnancy FPG. The multiple mediation analysis revealed that pre-pregnancy BMI not only had a direct effect on NBW (effect = 23.592, 95% CI [14.366, 32.306]) but also had an indirect effect (effect = 5.602, 95%CI [2.812, 8.648]) on NBW through three paths: the independent mediating role of early-pregnancy HDL-C (effect = 1.649, 95% CI [0.103, 3.472]); the independent mediating role of mid-pregnancy FPG (effect = 3.739, 95% CI [1.653, 6.164]); and the multiple chain-mediating role of early-pregnancy HDL-C and mid-pregnancy FPG (effect = 0.214, 95% CI [0.054, 0.508]). The mediated proportions of the three paths were 5.65%, 12.81%, and 0.73%.
conclusionsMaternal early- pregnancy HDL-C and mid-pregnancy FPG partially mediate the association between pre-pregnancy BMI and NBW in pregnant women with GDM.
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