Gut XXXX microbiota in one-month-old Brazilian newborns.

@entity1 @entity13854
UNASSIGNED: Gut colonisation with bifidobacteria in early infancy is essential for the well-being of the @entity1 . Gestational age and mode of delivery are among the factors influencing the colonisation process. The aim was to characterise the bifidobacterial composition in the gut of one-month-old full-term and pre-term Brazilian @entity1 , both being delivered vaginally or by caesarean section. Fourty nine Brazilian (Vi  osa, Minas Gerais state) one-month-old @entity1 were divided in two groups: full-term (n  =  24) and pre-term (n  =  25), and compared to each other. Each group was then characterised according to its mode of delivery. @entity1 stool samples were available for bifidobacterial characterisation by quantitative polymerase chain reaction (qPCR) method. All study @entity1 were colonised by bifidobacteria. @entity13854 colonised all full-term and pre-term newborns. Differences were observed in counts of @entity13854 genus and @entity13854 between full-term and pre-term @entity1 (8.8 log cells/g, IQR 7.9-9.1 vs. 7.1 log cells/g, IQR 6.6-8.6, p  =  0.02 and 8.3 log cells/g, IQR 6.7-9.1 vs. 6.4 log cells/g, IQR 6.1-6.7, p  =  0.001, respectively). Furthermore, the prevalence of @entity13854 lactis differed between pre-term caesarean and pre-term vaginally born @entity1 (50.0% vs. 93.8%, p  =  0.023). Gut bifidobacterial composition of one-month-old full-term @entity1 differs from that of pre-term newborns in Vi  osa, Minas Gerais state, Brazil. Gestational age is a factor influencing bacterial numbers and species, while mode of delivery have an impact on the prevalence and quantity of bifidobacteria in studied @entity1 . Bifidobacteria may have an impact on later health of the @entity1 and the species @entity13854 and B. lactis might provide clues on the potential probiotic applications in pre-term newborns at the risk of developing postnatal complications.
