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Biosci Biotechnol Biochem. 2007 Sep;71(9):2338-42. Epub 2007 Sep 7.

Differences in developing intestinal microbiota between allergic and non-allergic infants: a pilot study in Japan.

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Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.


The bacterial compositions of feces were monitored in the first 2 months for 15 infants born in Japan, including eight subjects who developed allergy by the age of 2 years. Primer sets targeting six predominant bacterial groups in the infant intestine, Bacteroidaceae, Enterobacteriaceae, bifidobacteria, enterococci, lactobacilli, and the Clostridium perfringens group, were used for real-time PCR to quantitate each population in the feces. The population of Bacteroidaceae was significantly higher in the allergic group at the ages of 1 month (P=0.03) and 2 months (P=0.05) than in the non-allergic group, while no statistically significant difference was observed for the other bacterial populations.

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