Maternal antimicrobial use at delivery has a stronger impact than mode of delivery on bifidobacterial colonization in infants: a pilot study

Study information

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study design

cross-sectional observational, not case-control

Citation

PMID PubMed identifier for scientific articles.

30042470

DOI Digital object identifier for electronic documents.

https://doi.org/10.1038/s41372-018-0172-1

URI

Authors

Imoto N, Morita H, Amanuma F, Maruyama H, Watanabe S, Hashiguchi N

Journal

Journal of perinatology : official journal of the California Perinatal Association

Year

2018

OBJECTIVE: To investigate factors related to bifidobacterial colonization in early infancy, with a focus on maternal antimicrobial use at delivery. STUDY DESIGN: A cross-sectional pilot study was performed. Feces samples of 33 Japanese healthy infants were collected over 10 months and analyzed by next-generation sequencing to examine the diversity and abundance of the gut microbiota. RESULTS: The beta diversity index of the gut microbiota differed significantly based on maternal antimicrobial use at delivery (P < 0.05). The most dominant genus was bifidobacteria, and the relative abundance of bifidobacteria in infants exposed to maternal antibiotics was significantly lower than in those who were not exposed (P < 0.05). In contrast, the delivery mode showed no significant relationship with gut microbiota diversity. CONCLUSIONS: Maternal antimicrobial use at delivery has a stronger effect than delivery mode on the gut microbiota, especially for colonization of bifidobacteria.

Experiment 1

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Curated date: 2021/01/10

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Subjects

Location of subjects: Japan

Host species Species from which microbiome was sampled. Contact us to have more species added.: Homo sapiens

Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology: Feces Cow dung,Cow pat,Droppings,Dung,Excrement,Excreta,Faeces,Fecal material,Fecal matter,Fewmet,Frass,Guano,Matières fécales@fr,Merde@fr,Ordure,Partie de la merde@fr,Piece of shit,Porción de mierda@es,Portion of dung,Portion of excrement,Portion of faeces,Portion of fecal material,Portion of fecal matter,Portion of feces,Portion of guano,Portion of scat,Portionem cacas,Scat,Spoor,Spraint,Stool,Teil der fäkalien@de,Feces,feces

Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology

Group 0 name Corresponds to the control (unexposed) group for case-control studies: without (non-Abx) use of maternal antimicrobial agents at delivery

Group 1 name Corresponds to the case (exposed) group for case-control studies: infants with (Abx)

Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: Healthy infants

Group 0 sample size Number of subjects in the control (unexposed) group: 14

Group 1 sample size Number of subjects in the case (exposed) group: 19

Lab analysis

Sequencing type: 16S

16S variable region One or more hypervariable region(s) of the bacterial 16S gene: V4

Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance: Illumina

Statistical Analysis

Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).: relative abundances

Statistical test: Mann-Whitney (Wilcoxon)

Significance threshold p-value or FDR threshold used for differential abundance testing (if any): 0.05

MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?: No

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness: increased

Chao1 Abundance-based estimator of species richness: unchanged

Signature 1

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Curated date: 2021/01/10

Curator: Mst Afroza Parvin

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Source: Table 2

Description: Relative abundance of the six most common bacterial genera in all infants (n = 33) and in those with and without use of maternal antibiotics and with Cesarean or vaginal delivery

Abundance in Group 1: decreased abundance in infants with (Abx)

NCBI	Quality Control	Links
Bifidobacterium

Revision editor(s): WikiWorks

Experiment 2

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Curated date: 2024/03/10

Curator: Scholastica

Revision editor(s): WikiWorks, Chloe, Scholastica, Omojokunoluwatomisin

Differences from previous experiment shown

Subjects

Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology

Group 0 name Corresponds to the control (unexposed) group for case-control studies: Healthy infant not exposed to maternal antimicrobial

Group 1 name Corresponds to the case (exposed) group for case-control studies: Healthy infant exposed to maternal antimicrobial

Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: An infant or baby is the very young offspring of human beings. A newborn is, in colloquial use, an infant who is only hours, days, or up to one month old.