期刊
FRONTIERS IN MEDICINE
卷 5, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fmed.2018.00135
关键词
cesarean delivery; vaginal delivery; delivery mode; neonatal microbiome; infant microbiome; developmental origins; vaginal seeding
资金
- University of Western Australia
- Women and Infants Research Foundation of Western Australia
- National Health and Medical Research Council Project Grants
Numerous studies suggest that infants delivered by cesarean section are at a greater risk of non-communicable diseases than their vaginal counterparts. In particular, epidemiological studies have linked Cesarean delivery with increased rates of asthma, allergies, autoimmune disorders, and obesity. Mode of delivery has also been associated with differences in the infant microbiome. It has been suggested that these differences are attributable to the bacterial baptism of vaginal birth, which is bypassed in cesarean deliveries, and that the abnormal establishment of the early-life microbiome is the mediator of later-life adverse outcomes observed in cesarean delivered infants. This has led to the increasingly popular practice of vaginal seeding: the iatrogenic transfer of vaginal microbiota to the neonate to promote establishment of a normal infant microbiome. In this review, we summarize and critically appraise the current evidence for a causal association between Cesarean delivery and neonatal dysbiosis. We suggest that, while Cesarean delivery is certainly associated with alterations in the infant microbiome, the lack of exposure to vaginal microbiota is unlikely to be a major contributing factor. Instead, it is likely that indication for Cesarean delivery, intrapartum antibiotic administration, absence of labor, differences in breastfeeding behaviors, maternal obesity, and gestational age are major drivers of the Cesarean delivery microbial phenotype. We, therefore, call into question the rationale for vaginal seeding and support calls for the halting of this practice until robust evidence of need, efficacy, and safety is available.
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