منابع مشابه
Curli loci of Shigella spp.
An unstable chromosomal element encoding multiple antibiotic resistance in Shigella flexneri serotype 2a was found to include sequences homologous to the csg genes encoding curli in Escherichia coli and Salmonella enterica serovar Typhimurium. As curli have been implicated in the virulence of serovar Typhimurium, we investigated the csg loci in all four species of Shigella. DNA sequencing and P...
متن کاملGenetic structure of the nadA and nadB antivirulence loci in Shigella spp.
Comparison of nadA and nadB in 14 Shigella strains and enteroinvasive Escherichia coli versus E. coli showed that at least one locus is altered in all strains. These observations explain the characteristic nicotinic acid auxotrophy of Shigella organisms and are consistent with the previously identified antivirulence nature of these genes for these pathogens.
متن کاملEnteric bacteria Escherichia coli and Shigella spp
Gene clusters for biosynthesis of 24 of 34 basic O-antigen forms of Shigella spp. are identical or similar to those of the genetically closely related bacterium Escherichia coli. For 18 of these relatedness was confirmed chemically by elucidation of the O-antigen (O-polysaccharide) structures. In this work, structures of the six remaining O-antigens of E. coli O32, O53, O79, O105, O183 (all rel...
متن کاملAntibiotic resistance of Shigella spp., Salmonella spp., and Yersinia spp. isolated in Quebec.
Salmonella spp., Shigella spp., and Yersinia spp. are important enteropathogenic bacteria. Antibiotic treatment is normally indicated for infections caused by Shigella spp. and only in the case of severe infections for Salmonella and Yersinia. Studies from a number of countries have reported the development of resistance of these bacteria to certain antibiotics. The new quinolones, such as cipr...
متن کاملDiversity of Variable Number Tandem Repeat Loci in Shigella Species Isolated From Pediatric Patients
Multilocus variable number tandem repeat (VNTR) analysis (MLVA) is a new typing method with several advantages compared to other methods. Dissemination of Shigella is highly significant in developing countries. Whilst Shigella is becoming increasingly important as an etiologic agent of pediatric shigellosis in Iran, little is known about the genetic diversity of the local strains. Therefore, th...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 2000
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.68.6.3780-3783.2000