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Comparison of outer membrane protein and lipopolysaccharide profiles of enterotoxigenic Escherichia coli strains isolet in Säo Paulo, Brazil
Braz. j. med. biol. res ; 28(5): 545-52, May 1995. ilus, tab
Artículo en Inglés | LILACS | ID: lil-154875
ABSTRACT
The outer membrane protein (OMP) and lipopolysaccharide (LPS) patterns of 12 strains of serogroups of enterotoxigenic E. coli frequntly isolated in Säo Paulo city werte determined by fractionation techniques and by sodium dodecyl sulfate-plyacrylamide gel electrophoresis (SDS-PAGE). Five O6, three O78 and four O128 serogroup isolates of different serotypes (flagellar antigens) and virulence factors (toxins and colonization factor antigens) showed a high degree of variability in their OMP pattern and at least nine groups could be identified. The analysis of LPS aptterns by SDS-PAGE showed a homogenous profile for the O6 strains and some minor differences for the O128 and 078 strains. The oresented data indicate that analysis of OMP and LPS by SDS-PAGE may further improve the discriminating ability of extensively used serological techniques or the detection of virulence factors and could be a useful tool in epidemiological studies of enterotoxigenic E. coli (ETEC) strains from this area
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Índice: LILACS (Américas) Asunto principal: Proteínas de la Membrana Bacteriana Externa / Lipopolisacáridos / Escherichia coli Tipo de estudio: Estudio pronóstico País/Región como asunto: America del Sur / Brasil Idioma: Inglés Revista: Braz. j. med. biol. res Asunto de la revista: Biologia / Medicina Año: 1995 Tipo del documento: Artículo

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Índice: LILACS (Américas) Asunto principal: Proteínas de la Membrana Bacteriana Externa / Lipopolisacáridos / Escherichia coli Tipo de estudio: Estudio pronóstico País/Región como asunto: America del Sur / Brasil Idioma: Inglés Revista: Braz. j. med. biol. res Asunto de la revista: Biologia / Medicina Año: 1995 Tipo del documento: Artículo