Ceramides and their interactive effects with trimethylamine-N-oxide metabolites on risk of gestational diabetes: a nested case-control study
2020
Abstract Aims To explore associations between ceramides in early pregnancy and gestational diabetes mellitus (GDM); and interactions between ceramides and trimethylamine N-oxide (TMAO) metabolites for GDM. Methods We organized a 1:1 nested case-control study (n=486) from a prospective cohort of pregnant women. Conditional logistic regression and additive interaction were performed to examine relationships between ceramides and TMAO metabolites for GDM. We defined trimethylamine (TMA) conversion ratio (TMAR) as TMA/its precursors and TMAO conversion ratio (TMAOR) as TMAO/TMA. Copresence of high TMAR and low TMAOR indicated TMA accumulation status. Results High ceramides 18:0 (per SD), 18:1 (per SD) and low ceramide 24:0 ( Conclusions High ceramides 18:0, 18:1 and low ceramide 24:0 in early pregnancy were associated with increased GDM risk. Notably, TMA accumulation greatly amplified the risk-promoting effect of low ceramide 24:0 for GDM.
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