Folic acid antagonist use before and during pregnancy and risk for selected birth defects.
Folic acid antagonist use before and during pregnancy and risk for selected birth defects.
复制标题
怀孕前和怀孕期间使用叶酸拮抗剂以及特定出生缺陷的风险。
DOI:
10.1002/bdr2.1789
复制
发表时间:
2020
影响因子:
2.1
通讯作者:
Werler,MarthaM
中科院分区:
文献类型:
--
作者:
Kerr,StephenM;Parker,SamanthaE;Mitchell,AllenA;Tinker,SarahC;Werler,MarthaM
BackgroundMaternal folic acid (FA) intake before and during early pregnancy reduces the risk for neural tube defects (NTDs); evidence suggests it may also reduce the risk for oral clefts, urinary defects, and cardiac defects. We sought to re‐examine the use of drugs, which affect folate metabolism, dihydrofolate reductase inhibiting (DHFRI) medications, and anti‐epileptic drugs (AEDs), in data collected in the post‐FA fortification era (1998+) in the Slone Birth Defects Study.MethodsWe assessed maternal DHFRI and AED use and risk for NTDs, oral clefts, and urinary and cardiac defects. We estimated odds ratios (ORs) and 95% confidence intervals (CIs) using logistic regression. We assessed daily average FA intake of ≥400 mcg as a potential effect modifier.ResultsWe analyzed data from 10,209 control and 9,625 case mothers. Among controls, the prevalence of exposure to DHFRI medications was 0.3% and to AEDs was 0.5%. Maternal use of AEDs was associated with increased risks for NTDs (OR: 3.4; 95% CI: 1.5, 7.5), oral clefts (OR: 2.3; 95% CI: 1.3, 4.0), urinary defects (OR: 1.6; 95% CI: 1.0, 2.7), and cardiac defects (OR: 1.6; 95% CI: 1.1, 2.3); similar or further increased risks were found among those with FA intake ≥400 mcg per day. DHFRI use was rare and relative risk estimates were imprecise and consistent with the null.ConclusionsSimilar to our previous analyses, we observed associations between AED use and these defects. For DHFRI exposure, we found no evidence for increased risk of these defects. Though statistical power to examine FA effect modification was low, we found no evidence of further protection among those with FA intake ≥400 mcg, with some associations somewhat stronger in this group.