J Blanco, J E Blanco, M Blanco, E A González, J I Garabal, M P Alonso
{"title":"Toxic and adhesive properties of Escherichia coli strains belonging to classic enteropathogenic serogroups.","authors":"J Blanco, J E Blanco, M Blanco, E A González, J I Garabal, M P Alonso","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Twenty-three strains belonging to classic enteropathogenic Escherichia coli (EPEC) serogroups were investigated for the production of heat-labile (LT) and heat-stable (STa) enterotoxins, verotoxins (VT), cytotoxic necrotizing factors CNF1 and CNF2, alpha-haemolysin (Hly), necrosis and modification of permeability in rabbit skin, lethal activity to mice, mannose-resistant (MRHA) and mannose-sensitive (MSHA) haemagglutination, relative cell surface hydrophobicity and the expression of P fimbriae. Of 23 EPEC strains, 7 (30%) belonging to serotypes O18ac: H7 (Hly+), O20: H26 (lethal), O26: H- (Hly+), O44: H18 (Hly+), O55: H- (CNF2+, necrotic and lethal), O119: H27 (VT+ and Hly+) and O142: H6 (lethal) produced toxic factors. Seven (30%) of 23 EPEC strains were MRHA+, 17 (74%) were MSHA+ and only 2 possessed high hydrophobicity. Two strains belonging to serotypes O18ac: H7 and O44: H18 that showed MRHA type IVa were fimbriated when grown on CFA medium.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"40 4","pages":"335-41"},"PeriodicalIF":0.0000,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta microbiologica Hungarica","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Twenty-three strains belonging to classic enteropathogenic Escherichia coli (EPEC) serogroups were investigated for the production of heat-labile (LT) and heat-stable (STa) enterotoxins, verotoxins (VT), cytotoxic necrotizing factors CNF1 and CNF2, alpha-haemolysin (Hly), necrosis and modification of permeability in rabbit skin, lethal activity to mice, mannose-resistant (MRHA) and mannose-sensitive (MSHA) haemagglutination, relative cell surface hydrophobicity and the expression of P fimbriae. Of 23 EPEC strains, 7 (30%) belonging to serotypes O18ac: H7 (Hly+), O20: H26 (lethal), O26: H- (Hly+), O44: H18 (Hly+), O55: H- (CNF2+, necrotic and lethal), O119: H27 (VT+ and Hly+) and O142: H6 (lethal) produced toxic factors. Seven (30%) of 23 EPEC strains were MRHA+, 17 (74%) were MSHA+ and only 2 possessed high hydrophobicity. Two strains belonging to serotypes O18ac: H7 and O44: H18 that showed MRHA type IVa were fimbriated when grown on CFA medium.
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