[Virulence factors and phenotypes of sixty-one strains of Escherichia coli of bovine origin, producing cytotoxic necrotising toxin type 1 (CNF 1)].
Virulence factors and phenotypes of 61 strains CNF1+ were investigated. Eighty-nine percent of the strains produced an aerobactin and were resistant to the bactericidal activity of sheep serum, both of which are properties of septicemic strains of E coli. None of the strains reacted either with DNA probes corresponding to the enterotoxins STaP, STb, LT-I and LT-IIa, or to the verotoxins VT-I and VT-II. None produced the adhesins K99, Att25 (FY or F17) and Att111. The great majority (93.4%) of the CNF1+E coli possessed both properties. These properties allow CNF1+ to be distinguished from CNF-E coli.
Pohl
P
P
Institut national de recherches vétérinaires, Bruxelles, Belgique.
Daube
G
G
Mainil
J
J
Lintermans
P
P
Kaeckenbeeck
A
A
Oswald
E
E
D000818:Animals; D001427:Bacterial Toxins / Q000096:biosynthesis*; D001770:Blood Bactericidal Activity; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D003087:Colicins / Q000096:biosynthesis; D003603:Cytotoxins / Q000096:biosynthesis*; D004926:Escherichia coli / Q000145:classification / Q000276:immunology / Q000472:pathogenicity*; D004927:Escherichia coli Infections / Q000382:microbiology / Q000662:veterinary*; D029968:Escherichia coli Proteins; D006460:Hemolysin Proteins / Q000096:biosynthesis; D006877:Hydroxamic Acids / Q000378:metabolism; D010641:Phenotype; D014774:Virulence
D001427:Bacterial Toxins; D003087:Colicins; D003603:Cytotoxins; D029968:Escherichia coli Proteins; D006460:Hemolysin Proteins; D006877:Hydroxamic Acids; C060296:cytotoxic necrotizing factor type 1; C031819:aerobactin
Facteurs de virulence et phénotypes de soixante et une souches d'Escherichia coli d'origine bovine, productrices de la toxine cytotoxique nécrosante de type 1 (CNF 1).