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BJOG. 2016 May;123(6):983-93. doi: 10.1111/1471-0528.13601. Epub 2015 Sep 28.

Impact of maternal intrapartum antibiotics, method of birth and breastfeeding on gut microbiota during the first year of life: a prospective cohort study.

Author information

1
Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.
2
Department of Pediatrics & Child Health, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada.
3
Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
4
College of Pharmacy, University of Manitoba, Winnipeg, MB, Canada.
5
Centre for the Analysis of Genome Evolution and Function, University of Toronto, Toronto, ON, Canada.
6
Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB, Canada.
7
Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB, Canada.
8
Department of Medicine, McMaster University, Hamilton, ON, Canada.
9
Department of Pediatrics, Child & Family Research Institute, BC Children's Hospital, University of British Columbia, Vancouver, BC, Canada.
10
Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.

Abstract

OBJECTIVE:

Dysbiosis of the infant gut microbiota may have long-term health consequences. This study aimed to determine the impact of maternal intrapartum antibiotic prophylaxis (IAP) on infant gut microbiota, and to explore whether breastfeeding modifies these effects.

DESIGN:

Prospective pregnancy cohort of Canadian infants born in 2010-2012: the Canadian Healthy Infant Longitudinal Development (CHILD) Study.

SETTING:

General community.

SAMPLE:

Representative sub-sample of 198 healthy term infants from the CHILD Study.

METHODS:

Maternal IAP exposures and birth method were documented from hospital records and breastfeeding was reported by mothers. Infant gut microbiota was characterised by Illumina 16S rRNA sequencing of faecal samples at 3 and 12 months.

MAIN OUTCOME MEASURES:

Infant gut microbiota profiles.

RESULTS:

In this cohort, 21% of mothers received IAP for Group B Streptococcus prophylaxis or pre-labour rupture of membranes; another 23% received IAP for elective or emergency caesarean section (CS). Infant gut microbiota community structures at 3 months differed significantly with all IAP exposures, and differences persisted to 12 months for infants delivered by emergency CS. Taxon-specific composition also differed, with the genera Bacteroides and Parabacteroides under-represented, and Enterococcus and Clostridium over-represented at 3 months following maternal IAP. Microbiota differences were especially evident following IAP with emergency CS, with some changes (increased Clostridiales and decreased Bacteroidaceae) persisting to 12 months, particularly among non-breastfed infants.

CONCLUSIONS:

Intrapartum antibiotics in caesarean and vaginal delivery are associated with infant gut microbiota dysbiosis, and breastfeeding modifies some of these effects. Further research is warranted to explore the health consequences of these associations.

TWEETABLE ABSTRACT:

Maternal #antibiotics during childbirth alter the infant gut #microbiome.

KEYWORDS:

Breastfeeding; caesarean section; gut microbiome; gut microbiota; infant; intrapartum antibiotics

PMID:
26412384
DOI:
10.1111/1471-0528.13601
[Indexed for MEDLINE]
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