title: Invasin gimB found in a bovine intestinal Escherichia coli with an adherent and invasive profile.
abstract: The invasin gimB (genetic island associated with human newborn meningitis) is usually found in ExPEC (Extraintestinal Pathogenic Escherichia coli) such as UPEC (uropathogenic E. coli), NMEC (neonatal meningitis E. coli) and APEC (avian pathogenic E. coli). In NMEC, gimB is associated with the invasion process of the host cells. Due to the importance of E. coli as a zoonotic agent and the scarce information about the frequency of gimB-carrying strains in different animal species, the aim of this study was to investigate the presence of gimB in isolates from bovine, swine, canine and feline clinical samples. PCR was conducted on 196 isolates and the identity of the amplicons was confirmed by sequencing. Of the samples tested, only E. coli SB278/94 from a bovine specimen was positive (1/47) for gimB, which represents 2.1% of the bovine isolates. The ability of SB278/94 to adhere to and invade eukaryotic cells was confirmed by adherence and gentamicin-protection assays using HeLa cells. This is the first study that investigates for gimB in bovine, canine and feline E. coli isolates and shows E. coli from the intestinal-bovine samples harboring gimB.
authors.affiliation: Laboratório de Bacteriologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil .
authors.forename: Letícia B
authors.initials: LB
authors.lastname: Matter
authors.affiliation: Laboratório de Bacteriologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil .
authors.forename: Denis A
authors.initials: DA
authors.lastname: Spricigo
authors.affiliation: Laboratório de Bacteriologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil .
authors.forename: Caiane
authors.initials: C
authors.lastname: Tasca
authors.affiliation: Laboratório de Bacteriologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil .
authors.forename: Agueda C de
authors.initials: AC
authors.lastname: Vargas
mesh_terms: D000818:Animals; D001422:Bacterial Adhesion / Q000235:genetics*; D001483:Base Sequence; D002371:Cat Diseases / Q000382:microbiology*; D002415:Cats; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D045744:Cell Line, Tumor; D004283:Dog Diseases / Q000382:microbiology*; D004285:Dogs; D004926:Escherichia coli / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity*; D004927:Escherichia coli Infections / Q000382:microbiology; D029968:Escherichia coli Proteins / Q000235:genetics*; D005798:Genes, Bacterial; D005839:Gentamicins / Q000494:pharmacology; D006367:HeLa Cells; D006801:Humans; D007422:Intestines / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*; D037521:Virulence Factors / Q000235:genetics*
chemical_list: D029968:Escherichia coli Proteins; D005839:Gentamicins; C000609400:GimB protein, E coli; D037521:Virulence Factors
keywords: adherence; companion animals; gimB; invasiveness; livestock; zoonotic potential