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© J.M. Ghigo (Institut Pasteur) and Brigite Arbeille (LBC-ME. Faculté de Médecine de Tours)
Colorized scanning electron microscopy of an E. coli biofilm developing on a glass surface
Publication : Archives of microbiology

Virulence genotype and phenotype of two clinical isolates of Arcobacter butzleri obtained from patients with different pathologies.

Team: Genetics of Biofilms
Member: Adrian Salazar Sanchez
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Archives of microbiology - 04 Nov 2023

Baztarrika I, Salazar-Sánchez A, Hernaez Crespo S, López Mirones JI, Canut A, Alonso R, Martínez-Ballesteros I, Martinez-Malaxetxebarria I

Link to Pubmed [PMID] – 37923944

Link to DOI – 10.1007/s00203-023-03709-3

Arch Microbiol 2023 Nov; 205(12): 369

The surge in human arcobacteriosis has increased interest in determining the mechanisms involved in the pathogenesis of Arcobacter butzleri. Here, genomic analyses and in vitro Caco-2 infection, motility, urease and antimicrobial susceptibility testing (AST) assays were used to characterise the virulence and antimicrobial resistance (AMR) determinants of strains HC-1, isolated from a patient with travellers’ diarrhoea, and HC-2, isolated from another with pruritus. AMR determinants conferring resistance to tetracycline (tetO, present in both genomes) and to ampicillin and amoxicillin-clavulanic acid (bla3, present in HC-2) were identified. The same determinants associated with flagellum, chemotaxis, adhesion and invasion were detected in both, but HC-1 lacked eight flagellar genes. The urease cluster was only present in HC-1. Motility and urease tests confirmed the genetic differences between strains, but no genetic marker related to the inability of HC-2 to adhere and invade was identified. This inability could be conditioning the patient’s pathology.