The effect of Lactobacillus rhamnosus on enterohemorrhagic Escherichia coli infection of human intestinal cells in vitro

Jyunko Hirano, Tomoaki Yoshida, Tsuyoshi Sugiyama, Naoki Koide, Isamu Mori, Takashi Yokochi

研究成果: Article査読

70 被引用数 (Scopus)

抄録

There are many examples of probiotic effects of various lactic bacteria on enteropathogens. In this study, Lactobacillus strains (L. rhamnosus, L. gasseri, L. casei and L. plantarum) were tested in an in vitro model of enterohemorrhagic Escherichia coli (EHEC) infection of a human colon epithelial cell line, C2BBe1. While the adhesion and colonization of EHEC was not affected by any of the lactobacillus strains tested, the internalization of EHEC into the cell line was markedly suppressed by L. rhamnosus, though not by others. Concerning the possible mechanisms, the viabilities of EHEC and host cell were not affected by the presence of L. rhamnosus. Simple competitions at certain receptors were unlikely because the suppressive effect on EHEC internalization was strictly dependent on viable L. rhamnosus and could not be observed with the conditioned medium or killed L. rhamnosus. The fact that L. rhamnosus showed outstanding potential for adhering to the colon epithelial cell line, compared with other strains, suggested that an avid interaction between L. rhamnosus and the host cell might be modulating intra-cellular events responsible for the internalization of EHEC.

本文言語English
ページ(範囲)405-409
ページ数5
ジャーナルMICROBIOLOGY and IMMUNOLOGY
47
6
DOI
出版ステータスPublished - 2003
外部発表はい

All Science Journal Classification (ASJC) codes

  • 微生物学
  • 免疫学
  • ウイルス学

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