Cited by 25Gut microbiota and healthInfant Nutrition and HealthAntibiotic Resistance in Bacteria

The role of Bifidobacterium genus in modulating the neonate microbiota: implications for antibiotic resistance acquisition in early life

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Samarra, Anna, Cabrera-Rubio, Raúl, Martínez-Costa, Cecilia, Collado, Maria Carmen·2024·Gut Microbes

Abstract

Resistance to antibiotics in newborns is a huge concern as their immune system is still developing, and infections and resistance acquisition in early life have short- and long-term consequences for their health. Bifidobacterium species are important commensals capable of dominating the infant gut microbiome and are known to be less prone to possess antimicrobial resistance genes than other taxa that may colonize infants. We aimed to study the association between Bifidobacterium-dominated infant gut microbiota and the antibiotic resistant gene load in neonates, and to ascertain the perinatal factors that may contribute to the antibiotic resistance acquisition. Two hundred infant fecal samples at 7 days and 1 month of age from the MAMI birth cohort were included in the study and for whom maternal-neonatal clinical records were available. Microbiota profiling was carried out by 16S rRNA amplicon sequencing, and targeted antibiotic resistance genes (ARGs) including tetM, tetW, tetO, blaTEM, blaSHV and ermB were quantified by qPCR. Infant microbiota clustered into two distinct groups according to their Bifidobacterium genus abundance: high and low. The main separation of groups or clusters at each time point was performed with an unsupervised non-linear algorithm of k-means partitioning to cluster data by time points based on Bifidobacterium genus relative abundance. Microbiota composition differed significantly between both groups, and specific bifidobacterial species were enriched in each cluster. Lower abundance of Bifidobacterium in the infant gut was associated with a higher load of antibiotic resistance genes. Our results highlight the relevance of Bifidobacterium genus in the early acquisition and establishment of antibiotic resistance in the gut. Further studies are needed to develop strategies to promote a healthy early colonization and fight against the spread of antibiotic resistances.

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  1. [22]Edgar RC. UNOISE2: improved error-correction for Illumina 16S and ITS amplicon sequencing. bioRxiv. 2016; 081257. [ accessed 2023 Feb 13]. doi: 10.1101/081257v1. · DOI
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Authors
Samarra, A., Cabrera-Rubio, R., Martínez-Costa, C., & Collado, M. C.
Affiliations
  • Consejo Superior de Investigaciones Científicas (ES)
  • Department of Biotechnology, Institute of Agrochemistry and Food Technology- National Research Council (IATA-CSIC), Paterna, Valencia, Spain
  • Department of Pediatrics, School of Medicine, University of Valencia, Valencia, Spain
Venue
Gut Microbes
Published
2024-05-26
Volume
16
Issue
1
Pages
2357176-2357176
ISSN
  • 1949-0976 (ISSN-L)
  • 1949-0984
OpenAlex
W4399034506
Cited by
25
References
72
Citations by year
2026: 9 · 2025: 10 · 2024: 6
FWCI
3.81
Type
journal article
Language
en
Open access
Locations
  • Gut Microbes (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Repository of Digital Objects for Teaching Research and Culture (University of Valencia) (submittedVersion, cc-by-nc)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
PROMETEO/Generalitat Valenciana (NeoHealth, ref. 2020/012)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Nursing › Nutrition and Dietetics › Infant Nutrition and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Antibiotic Resistance in Bacteria
Keywords
Bifidobacterium, infant gut microbiota, antibiotic resistance genes, tetM, tetW, tetO, blaTEM, blaSHV, ermB, perinatal factors, early life colonization, fecal microbiota
MeSH terms
Gastrointestinal Microbiome, Anti-Bacterial Agents, Bifidobacterium, Feces, Female, Humans, Infant, Infant, Newborn, Male, RNA, Ribosomal, 16S, Drug Resistance, Bacterial

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