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Association of maternal folate intake during pregnancy with infant asthma risk.


ABSTRACT: Several studies assessed the association of maternal folate intake with infant asthma risk, but the findings are controversial. We performed a meta-analysis to clarify the association between maternal folate intake and infant asthma risk. PubMed and SCOPUS databases were searched for related studies published until August 2018. Fixed-effects models were applied to pool relative risks (RRs) and their corresponding 95% confidence intervals (CIs) due to the low heterogeneity. We also adopted generalized least-squares trend (GLST) estimation for the dose-response analysis. In our study, a total of 10 studies with maternal folate intake and 5 studies with blood folate concentration were included. We found that maternal folate intake during pregnancy was significantly related to the risk of infant asthma (RR?=?1.11; 95% CI?=?1.06-1.17). Similar results were found for geographic region from Europe (RR?=?1.08; 95% CI?=?1.01-1.16) and North America (RR?=?1.20; 95% CI?=?1.11-1.30) in subgroup analyses. Meanwhile, the dose-response analysis showed a linear relationship between maternal folic acid intake during pregnancy and infant asthma risk. This meta-analysis indicates that maternal folate intake during pregnancy could increase infant asthma risk. Therefore, the adverse effect of folic acid on infant asthma should not be ignored when it is supplemented during pregnancy to prevent birth defects.

SUBMITTER: Li W 

PROVIDER: S-EPMC6554315 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Association of maternal folate intake during pregnancy with infant asthma risk.

Li Weijian W   Xu Bo B   Cao Yuepeng Y   Shao Yang Y   Wu Wanke W   Zhou Jun J   Tan Xiaofang X   Wu Xiaoli X   Kong Jing J   Hu Chen C   Xie Kaipeng K   Wu Jiangping J  

Scientific reports 20190606 1


Several studies assessed the association of maternal folate intake with infant asthma risk, but the findings are controversial. We performed a meta-analysis to clarify the association between maternal folate intake and infant asthma risk. PubMed and SCOPUS databases were searched for related studies published until August 2018. Fixed-effects models were applied to pool relative risks (RRs) and their corresponding 95% confidence intervals (CIs) due to the low heterogeneity. We also adopted genera  ...[more]

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