NDLI: Staphylococcus epidermidis: A differential trait of the fecal microbiota of breast-fed infants

Content Provider	Springer Nature : BioMed Central
Author	Jiménez, Esther Delgado, Susana Maldonado, Antonio Arroyo, Rebeca Albújar, Mar García, Natalia Jariod, Manel Fernández, Leonides Gómez, Adolfo Rodríguez, Juan M
Abstract	Background Breast milk is an important source of staphylococci and other bacterial groups to the infant gut. The objective of this work was to analyse the bacterial diversity in feces of breast-fed infants and to compare it with that of formula-fed ones. A total of 23 women and their respective infants (16 breast-fed and 7 formula-fed) participated in the study. The 16 women and their infants provided a sample of breast milk and feces, respectively, at days 7, 14, and 35. The samples were plated onto different culture media. Staphylococcal and enterococcal isolates were submitted to genetic profiling and to a characterization scheme, including detection of potential virulence traits and sensitivity to antibiotics. Results The feeding practice had a significant effect on bacterial counts. A total of 1,210 isolates (489 from milk, 531 from breast-fed and 190 from formula-fed infants) were identified. Staphylococcus epidermidis was the predominant species in milk and feces of breast-fed infants while it was less prevalent in those of formula fed-infants. Enterococcus faecalis was the second predominant bacterial species among the fecal samples provided by the breast-fed infants but it was also present in all the samples from the formula-fed ones. The biofilm-related icaD gene and the mecA gene were only detected in a low number of the S. epidermidis strains. Several enterococcal isolates were also characterized and none of them contained the cylA or the vanABDEG antibiotic-resistance genes. All were sensitive to vancomycin. Conclusion The presence of S. epidermidis is a differential trait of the fecal microbiota of breast-fed infants. Globally, the staphyloccal isolates obtained from milk and feces of breast-fed infants contain a low number of virulence determinants and are sensitive to most of the antibiotics tested.
Related Links	https://bmcmicrobiol.biomedcentral.com/counter/pdf/10.1186/1471-2180-8-143.pdf
Ending Page	11
Page Count	11
Starting Page	1
File Format	HTM / HTML
ISSN	14712180
DOI	10.1186/1471-2180-8-143
Journal	BMC Microbiology
Issue Number	1
Volume Number	8
Language	English
Publisher	BioMed Central
Publisher Date	2008-09-10
Access Restriction	Open
Subject Keyword	Microbiology Biological Microscopy Mycology Parasitology Virology Life Sciences Breast Milk Bacterial Count Fosfomycin Fecal Microbiota mecA Gene
Content Type	Text
Resource Type	Article
Subject	Microbiology Microbiology (medical)
Journal Impact Factor	4/2023
5-Year Journal Impact Factor	4.6/2023

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