Establishment of the bacterial fecal community during the first month of life in Brazilian newborns
Clinics
;
67(2): 113-123, 2012. ilus, graf, tab
Article
in English
| LILACS
| ID: lil-614634
ABSTRACT
OBJECTIVE:
The establishment of the intestinal microbiota in newborns is a critical period with possible long-term consequences for human health. In this research, the development of the fecal microbiota of a group of exclusively breastfed neonates living in low socio-economic conditions in the city of São Paulo, Brazil, during the first month of life, was studied.METHODS:
Fecal samples were collected from ten neonates on the second, seventh, and 30th days after birth. One of the neonates underwent antibiotic therapy. Molecular techniques were used for analysis; DNA was extracted from the samples, and 16S rRNA libraries were sequenced and phylogenetically analyzed after construction. A real-time polymerase chain reaction (PCR) was performed on the samples taken from the 30th day to amplify DNA from Bifidobacterium sp.RESULTS:
The primary phylogenetic groups identified in the samples were Escherichia and Clostridium. Staphylococcus was identified at a low rate. Bifidobacterium sp. was detected in all of the samples collected on the 30th day. In the child who received antibiotics, a reduction in anaerobes and Escherichia, which was associated with an overgrowth of Klebsiella, was observed throughout the experimental period.CONCLUSION:
The observed pattern of Escherichia predominance and reduced Staphylococcus colonization is in contrast with the patterns observed in neonates living in developed countries.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Bacteria
/
Breast Feeding
/
DNA, Bacterial
/
Feces
/
Intestines
Limits:
Female
/
Humans
/
Male
/
Infant, Newborn
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Clinics
Journal subject:
Medicine
Year:
2012
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de São Paulo/BR
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