Please use this identifier to cite or link to this item: https://repositorio.unifesp.br/handle/11600/44901
Title: Prevalence of Colonization Factor Antigens (CFAs) and Adherence to HeLa Cells in Enterotoxigenic Escherichia coli Isolated from Feces of Children in São Paulo
Authors: Guth, Beatriz Ernestina Cabilio [UNIFESP]
Aguiar, Eliana Goncalves [UNIFESP]
Griffin, Patricia Marie
Ramos, Sonia Regina Testa da Silva
Gomes, Tânia Aparecida Tardelli [UNIFESP]
CTR DIS CONTROL
HOSP INFANTIL MENINO JESUS
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Keywords: ESCHERICHIA COLI
COLONIZATION FACTOR ANTIGENS
ADHERENCE
DIARRHEA
Issue Date: 1-Jan-1994
Publisher: Center Academic Publ Japan
Citation: Microbiology And Immunology. Tokyo: Center Academic Publ Japan, v. 38, n. 9, p. 695-701, 1994.
Abstract: Fifty-eight enterotoxigenic Escherichia coli (ETEC) strains, isolated from children with and without diarrhea in Sao Paulo, were examined for the presence of colonization factor antigens (CFAs) and their ability to adhere to HeLa cells. Antisera to CFA/I, the coli surface (CS) antigens CS1CS3, CS2CS3, and CS2 of CFA/II, CFA/III, and CS5CS6 and CS6 of CFA/IV were used. CFAs were identified in 43% of the ETEC strains: 40% of the strains with CFAs harbored CFA/I, 24% carried CFA/II (CS1CS3), 24%; carried CFA/IV (CS6), and 12% carried CFA/IV (CS5CS6). CFAs occurred mainly among ETEC strains producing only heat-stable (ST-I) enterotoxin and in strains also producing heat-labile toxin (LT-I). No ETEC strains tested expressed CFA/III. A marked change in serotypes of ST-I-producing strains was found in Sao Paulo between 1979 and 1990. Adherence to HeLa cells was detected in 14% of the ETEC strains. All of them had a diffuse adherence pattern and produced only ST-I, and 88% carried CS6 antigen.
URI: http://repositorio.unifesp.br/11600/44901
ISSN: 0385-5600
Other Identifiers: http://dx.doi.org/10.1111/j.1348-0421.1994.tb01844.x
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