title: [Hemolytic properties of Escherichia coli strains isolated from cases of urinary tract infection and enteropathy].
abstract: Different strains of E. coli, that were isolated during years 1986-1990 from 217 urine samples in patients with asymptomatic bacteriuria, cystitis, cysto-pyelitis and pyelonephritis, appeared to be more frequently haemolytic (34.5%) than strains of E. coli isolated from faecal samples in patients with acute enteropathy. It was confirmed that the haemolysin production occurs during log -phase of bacterial growth. The degree of haemolysis can vary widely according to the strain involved. Agglutination tests, using 53 O-antiserum, showed a great variety of serogroups. Some of them (04, 018, 022) are prevalent among the haemolytic strains isolated from urine; some others (055, 0111, 075) are prevalent among the anhaemolytic strains isolated from urine and faeces.
authors.affiliation: Laboratorio di Microbiologia, Ospedale Maggiore di Novara.
authors.forename: S
authors.initials: S
authors.lastname: Andreoni
authors.forename: G L
authors.initials: GL
authors.lastname: Molinari
mesh_terms: D000372:Agglutination Tests; D000818:Animals; D001426:Bacterial Proteins / Q000032:analysis / Q000096:biosynthesis*; D004751:Enteritis / Q000382:microbiology*; D004926:Escherichia coli / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism* / Q000472:pathogenicity; D004927:Escherichia coli Infections / Q000382:microbiology*; D029968:Escherichia coli Proteins; D005243:Feces / Q000382:microbiology; D006460:Hemolysin Proteins / Q000032:analysis / Q000096:biosynthesis*; D006461:Hemolysis; D006736:Horses / Q000097:blood; D006801:Humans; D011817:Rabbits / Q000097:blood; D012703:Serotyping; D012756:Sheep / Q000097:blood; D013045:Species Specificity; D014552:Urinary Tract Infections / Q000382:microbiology*; D014556:Urine / Q000382:microbiology; D014774:Virulence
chemical_list: D001426:Bacterial Proteins; D029968:Escherichia coli Proteins; D006460:Hemolysin Proteins; C036507:Hlya protein, E coli
vernacular_title: Proprietà emolitiche di stipiti di Escherichia coli isolati in casi di infezione delle vie urinarie e di enteropatia.