Mechanisms of antibiotic resistance to enrofloxacin in uropathogenic Escherichia coli in dog

Cristian Piras, Alessio Soggiu, Viviana Greco, Piera Anna Martino, Federica Del Chierico, Lorenza Putignani, Andrea Urbani, Jarlath E. Nally, Luigi Bonizzi, Paola Roncada

Risultato della ricerca: Contributo in rivistaArticolo in rivista

27 Citazioni (Scopus)


Escherichia coli (E. coli) urinary tract infections (UTIs) are becoming a serious problem both for pets and humans (zoonosis) due to the close contact and to the increasing resistance to antibiotics. This study has been performed in order to unravel the mechanism of induced enrofloxacin resistance in canine E. coli isolates that represent a good tool to study this pathology. The isolated E. coli has been induced with enrofloxacin and studied through 2D DIGE and shotgun MS. Discovered differentially expressed proteins are principally involved in antibiotic resistance and linked to oxidative stress response, to DNA protection and to membrane permeability. Moreover, since enrofloxacin is an inhibitor of DNA gyrase, the overexpression of DNA starvation/stationary phase protection protein (Dsp) could be a central point to discover themechanismof this clone to counteract the effects of enrofloxacin. In parallel, the dramatic decrease of the synthesis of the outer membrane proteinW, which represents one of the main gates for enrofloxacin entrance, could explain additional mechanismof E. coli defense against this antibiotic.
Lingua originaleEnglish
pagine (da-a)365-376
Numero di pagine12
RivistaJournal of Proteomics
Stato di pubblicazionePubblicato - 2015


  • Antibiotic resistance
  • Enrofloxacin
  • Escherichia coli
  • Urinary tract infections


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