Differences in Composition and Mucosal Adhesion of Bifidobacteria Isolated from Healthy Adults and Healthy Seniors |
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| Authors: | Fang He Arthur C. Ouwehand Erika Isolauri Masataka Hosoda Yoshimi Benno Seppo Salminen |
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| Affiliation: | (1) Department of Biochemistry and Food Chemistry, University of Turku, FIN-20014 Turku, Finland, FI;(2) Technical Research Laboratory, Takanashi Milk Products Co. Ltd, 241-0023, Yokohama, Japan, JP;(3) Department of Paediatrics, Turku University Central Hospital, FIN-20521 Turku, Finland, FI;(4) Japan Collection of Microorganisms, Institute of Physical and Chemical Research (RIKEN), Wako-Shi, 351-01, Japan, JP |
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| Abstract: | ![]()
Fifty-one Bifidobacterium strains were isolated from the feces of healthy adults (30–40 years old) and seniors (older than 70 years of age). B. adolescentis, B. breve, B. infantis, and B. longum were isolated from the healthy adults and B. adolescentis and B. longum from elderly subjects. The tested bacteria bound, in vitro, to intestinal mucus in a strain dependent manner. The strains isolated from healthy adults, and especially B. adolescentis, bound better to intestinal mucus than those isolated from seniors. These results indicate that the mucosal adhesive properties of the human Bifidobacterium flora were reduced with the aging of the host. This shift to a Bifidobacterium flora with reduced adhesive abilities may explain the decrease in bifidobacteria levels in the intestinal microflora of aging people. Received: 7 February 2001 / Accepted: 3 April 2001 |
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