PMID- 10367358 OWN - NLM STAT- MEDLINE DCOM- 19990709 LR - 20061115 IS - 0928-4249 (Print) IS - 0928-4249 (Linking) VI - 30 IP - 2-3 DP - 1999 Mar-Jun TI - Enterotoxigenic Escherichia coli (ETEC) in farm animals. PG - 259-84 AB - Animal diseases due to enterotoxigenic Escherichia coli (ETEC) typically appear as severe watery diarrhoea during the first few days of life (also a few days after weaning in pigs). ETEC adhere to the small intestinal microvilli without inducing morphological lesions and produce enterotoxins acting locally on enterocytes. This action results in the hypersecretion (of water and electrolytes) and reduced absorption. Adhesins and toxins are the two prominent virulence attributes of ETEC and the level of knowledge of these factors determines the chances for successful prevention and therapy of the disease. For animal ETEC the most common adhesins are the fimbriae (pili) on the surface: F4(K88), F5(K99), F6(987P), F41, F42, F165, F17 and F18. Enterotoxins (extracellular proteins or peptides) of animal ETEC are classified as heat-labile (LT) and heat-stable (ST) enterotoxins with further subdivisions (LTh-I, LTp-I, LTIIa, LTIIb, STaH, STaP, STb) according to antigenic and biological differences. Fimbriae and LT enterotoxins are made up of large molecular weight proteins which facilitate their utilisation in vaccines and their detection using immunodiagnostic systems. The adhesive fimbriae and enterotoxins of animal ETEC are plasmid determined (except F41 and F17). Virulence gene probes (DNA hybridisation, PCR) are specific and sensitive diagnostic and epidemiologic tools for the detection of ETEC. Based on genetic typing, the ETEC, in spite of limited serogroups, seem to represent a population of E. coli with a diverse genetic background. FAU - Nagy, B AU - Nagy B AD - Veterinary Medical Research Institute of the Hungarian Academy of Sciences, Budapest. bnagy@novell.vmri.hu FAU - Fekete, P Z AU - Fekete PZ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - England TA - Vet Res JT - Veterinary research JID - 9309551 RN - 0 (Enterotoxins) SB - IM MH - Animals MH - Animals, Domestic MH - Diarrhea/physiopathology/veterinary MH - Enterotoxins/*biosynthesis MH - Escherichia coli/classification/*pathogenicity MH - Escherichia coli Infections/microbiology/physiopathology/*veterinary MH - Swine MH - Swine Diseases/microbiology/physiopathology MH - Virulence RF - 129 EDAT- 1999/06/15 00:00 MHDA- 1999/06/15 00:01 CRDT- 1999/06/15 00:00 PHST- 1999/06/15 00:00 [pubmed] PHST- 1999/06/15 00:01 [medline] PHST- 1999/06/15 00:00 [entrez] PST - ppublish SO - Vet Res. 1999 Mar-Jun;30(2-3):259-84.