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primary topic: Studies on the genesis of Vibrio cholerae O139: identification of probable progenitor strains.

Studies on the genesis of Vibrio cholerae O139: identification of probable progenitor strains.
type: AcademicArticle
type: Article
abstract: Four lines of evidence suggest that the recent outbreak strains of Vibrio cholerae O139 could have emerged from serogroup O1 strains typified by isolates M01 and M0477 described in this paper, which are neither truly classical nor truly E1 Tor in their biotype attributes. Firstly, like all O139 isolates, these O1 strains, isolated in Madras during and before the O139 outbreak, were resistant not only to polymyxin B but also to all biotype-specific choleraphages, i.e. classical phage phi 149 and E1 Tor phages e4 and e5. Secondly, the restriction fragment pattern (RFP) polymorphism displayed by these strains for the cholera toxin (ctx) gene, were identical with those produced by O139 isolates but were different from those of O1 type strains, namely V. cholerae 569B (classical) and V. cholerae MAK757 (E1 Tor). Thirdly, all the O139 isolates and the two O1 isolates carried an identical large number of copies of cholera toxin gene in their chromosomes. Finally, the outer-membrane protein profiles of strains M01 and M0477 were identical to those of O139 isolates but were different from those displayed by strains 569B and MAK757.
date: 1995-01
volume: 42
issue: 1
is part of: Journal of medical microbiology
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
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subject: R Medicine (General)

Studies on the genesis of Vibrio cholerae O139: identification of probable progenitor strains. (PDF)
type: Document

Society for General Microbiology (SGM)
type: Organization

Journal of medical microbiology
type: Collection
issn: 00222615

T Ramamurthy
type: Person
given name: T
family name: Ramamurthy

B Das
type: Person
given name: B
family name: Das

S Roychowdhury
type: Person
given name: S
family name: Roychowdhury

N Bhasin
type: Person
given name: N
family name: Bhasin

A Ghosh
type: Person
given name: A
family name: Ghosh

C Sharma
type: Person
given name: C
family name: Sharma

S Pajni
type: Person
given name: S
family name: Pajni

S Ramajayam
type: Person
given name: S
family name: Ramajayam

S Kar
type: Person
given name: S
family name: Kar

G B Nair
type: Person
given name: G B
family name: Nair

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type: Document
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primary topic: Studies on the genesis of Vibrio cholerae O139: identification of probable progenitor strains.

R Medicine (General)
type: Concept