Murine monoclonal antibody elicited with antibiotic-exposed Escherichia coli exerts protective capacity in experimental bacterial infections.
J Med Microbiol
; 41(3): 179-83, 1994 Sep.
Article
em En
| MEDLINE
| ID: mdl-8064837
ABSTRACT
Escherichia coli pre-exposed to a sub-minimal inhibitory concentration (sub-MIC) of several antibiotics elicits an enhanced humoral response which is protective against challenges with untreated homologous and heterologous bacteria. To characterise the specificity of this response we produced murine monoclonal antibodies (MAbs) to aztreonam-treated E. coli O6K-. This resulted in the identification of MAb MT 1F, of isotype IgG1, that recognised a 12-kDa protein component of the untreated bacterial cells. After passive transfer, the MAb displayed protective activity in mice infected with lethal doses of live E. coli O6K- and E. coli O111B4. In ELISA experiments the MAb cross-reacted with structures located on whole cells of E. coli O6K-, E. coli O111B4, E. coli J5 and Salmonella minnesota Re595 and it also exerted a bactericidal activity against live E. coli O6K-. The modifications induced by antibiotic treatment may unmask bacterial epitopes that may elicit the production of MAbs endowed with protective capacity.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imunização Passiva
/
Escherichia coli
/
Infecções por Escherichia coli
/
Anticorpos Monoclonais
Limite:
Animals
Idioma:
En
Revista:
J Med Microbiol
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
Itália