各種材料から分離した Yersinia enterocolitica 血清型O3株の保有する44Mdプラスミドとカルシウム依存性および自己凝集性との関連

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  • Relationship between the presence of 44 megadalton plasmid and calcium dependency or autoagglutination to serotype O3 strains of Yersinia enterocolitica.
  • 各種材料から分離したYersinia enterocolitica血清型O3株の保有する44Mdプラスミドとカルシウム依存性および自己凝集性との関連〔英文〕
  • カクシュ ザイリョウ カラ ブンリシタ Yersinia enterocoli

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A total of 207 strains of Yersinia enterocolitica serotype O3 isolated from human, pig, dog, cat, rat and pork meat during the period between 1972 and 1984 were examined for the 44-megadalton plamid DNA, calcium dependency and autoagglutination. Strains positive for the plasmid, calcium dependency and autoagglutination were counted and found to be 164(79.2%), 152(73.4%) and 149(72.0%) respectively. All the plasmodia harboring strains were either calcium dependent or positive for the autoagglutination. All the strains which lacked the plasmid were calcium independent and negative for the autoagglutination except four strains (1.9%) that were positive for the autoagglutination. Despite different sources of Y. enterocolitica, all the plasmid positive strains harbored a single plasmid of 44-megadalton. These plasmids had identical restriction endonuclease digestion patterns, and the number of digestion fragements by BamHI, EcoRI and HindIII were 9, 10 and 13, respectively. Based on these results, it is suggested that the presence of the 44-megadalton plasmid Y. enterocolitica serotype O3 strains is closely related to calcium dependency and autoagglutination and that this plasmid may be inherent to serotype O3.

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