Anaerobic bacteria in the intestinal microbiota of Brazilian children
Clinics
;
72(3): 154-160, Mar. 2017. tab, graf
Article
in English
| LILACS
| ID: biblio-840058
ABSTRACT
OBJECTIVE:
Changes in the neonatal gut environment allow for the colonization of the mucin layer and lumen by anaerobic bacteria. The aim of the present study was to evaluate Bifidobacterium, Lactobacillus and Lactococcus colonization through the first year of life in a group of 12 Brazilian infants and to correlate these data with the levels of Escherichia coli. The presence of anaerobic members of the adult intestinal microbiota, including Eubacterium limosum and Faecalibacterium prausnitzii, was also evaluated.METHODS:
Fecal samples were collected during the first year of life, and 16S rRNA from anaerobic and facultative bacteria was detected by real-time PCR.RESULTS:
Bifidobacterium was present at the highest levels at all of the studied time points, followed by E. coli and Lactobacillus. E. limosum was rarely detected, and F. prausnitzii was detected only in the samples from the latest time points.CONCLUSION:
These results are consistent with reports throughout the world on the community structure of the intestinal microbiota in infants fed a milk diet. Our findings also provide evidence for the influence of the environment on intestinal colonization due to the high abundance of E. coli. The presence of important anaerobic genera was observed in Brazilian infants living at a low socioeconomic level, a result that has already been well established for infants living in developed countries.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Bacteria, Anaerobic
/
Feces
/
Gastrointestinal Microbiome
/
Intestines
Limits:
Humans
/
Infant
/
Infant, Newborn
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Clinics
Journal subject:
Medicine
Year:
2017
Type:
Article
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de São Paulo/BR
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