Mannose-resistant haemagglutination and colonisation factors among Escherichia coli strains isolated from pigs
| Autor: | Oliveira Ms, Serafim Mb, Giorgi W, Pestana de Castro Af |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Diarrhea
Hemagglutination Swine animal diseases Mannose I antigen Biology medicine.disease_cause digestive system Microbiology Serology Enterotoxins chemistry.chemical_compound Antigen Enterotoxigenic Escherichia coli Escherichia coli medicine Animals Swine Diseases Antigens Bacterial General Veterinary Hemagglutination Tests General Medicine Virology Culture Media Colonisation chemistry |
| Zdroj: | Veterinary Record. 109:275-278 |
| ISSN: | 2042-7670 0042-4900 |
| DOI: | 10.1136/vr.109.13.275 |
| Popis: | Ten heat-labile (LT) and 23 heat-stable (ST) enterotoxin-producing strains of enterotoxigenic Escherichia coli (ETEC) and 100 non-enterotoxigenic E coli (non-ETEC) strains isolated from pigs with diarrhoea were examined for the presence of colonisation factors by means of mannose-resistant haemagglutination and serological tests. Seven of 10 LT strains, one of 23 ST and 18 of 100 non-ETEC carried K88 antigen; and four ST and four non-ETEC strains possessed CFA/I antigen. All strains carrying K88, K99 and CFA/I antigens were positive in the mannose-resistant microhaemagglutination (MRMH) test but four ST and 14 non-ETEC isolates positive in the MRMH test did not possess K88, K99 or CFA/I antigens. A considerable number of non-ETEC strains were positive in the MRMH test but lacked K88 and K99 antigens, suggesting that other unknown haemagglutinating colonisation factors may exist in porcine E coli strains. |
| Databáze: | OpenAIRE |
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