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The diet of a mother during pregnancy may have an effect on the composition of her baby's intestinal microbiome, the community of bacteria living in the intestine, and the effect may vary according to delivery mode, according to the study. in the open access journal Microbiome .
"Our study demonstrates the badociation of an easily modifiable factor, the maternal diet, with the infant's intestinal microbiome. Lundgren and colleagues at the Dartmouth-Hitchbad Medical Center found that the intestinal microbiome in infants six weeks after delivery was composed mainly of Enterobactericeae . ] (~ 20%), Bifidobacterium (18.6%), Bacteroides (10.44%) and Streptococcus (8.10%).
The authors identified three distinct clusters of microbes in the guts of the 97 badl babies who were studied. Group 1 was characterized by a high abundance of Bifidobacterium Group 2 had a high abundance of Streptococcus and Clostridium while Group 3 had a high abundance of [19459004Bacteroides. These clusters were different for the 48 babies delivered by caesarean section, where group 1 had a high abundance of Bifidobacterium group 2 was characterized by Clostridium high but low Streptococcus The authors also observed what appears to be effects of some aspects of maternal diets on the intestinal microbiome of infants
. Babies delivered badlly, the odds of being in Group 2 were 2.73 times higher for each additional portion of fruit consumed by mothers per day. Bifidobacterium was found to be decreased in badl-born infants if mothers ate more fruit, but increased in caesarean-born infants compared to the consumption of red meat and transformed by mothers . In babies delivered by caesarean section, the odds of being in group 2 were 2.36 higher for each additional milk serving per day.
"We badyzed badl and caesarean delivery infants in separate groups because of our previous knowledge. transfer of maternal microbiota to infants that occurs during badl delivery, but not with caesarean delivery, "said Lundgren. "We expected the results to differ depending on the mode of distribution, but we were surprised to find that the abundance of some microbes increased in badociation with the maternal consumption of a food group in a group of mode of administration, but decreased in the other group.
Authors used stool samples from 145 infants enrolled in the New Hampshire birth cohort study, a research project who studies how various factors affect health, to better understand the mechanisms of maternal nutrition by the gut microbiome.
Most of the infants whose data were used in this study were born badlly (66 , 9%) and exclusively badfed (70.3%) at six weeks of age.Information about the nutrition of mothers during pregnancy between 24 and 28 weeks of gestation were obtained via questionnaires on food frequencies.
The authors caution that their sample included only mothers and infants from northern New England with a relatively homogeneous population.
The authors also point out that the effects observed in this study may be due in part to maternal nutrition during lactation.
The observational nature of the study does not allow conclusions to be drawn about the cause or effect the directionality of the badociation observed between the maternal diet and the baby's intestinal microbiome
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