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Istituto di scienza dell'alimentazione

Torna all'elenco Contributi in rivista anno 2015

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Survey of antibiotic resistance traits in strains of Lactobacillus casei/paracasei/rhamnosus

Anno di pubblicazione: 2015

Formato: Elettronico

Autori: Rossi, Franca; Di Renzo, Tiziana; Preziuso, Marco; Zotta, Teresa; Iacumin, L.; Coppola, R.; Reale, Anna

Affiliazioni autori: Universita degli Studi del Molise; Consiglio Nazionale delle Ricerche; Universita degli Studi di Udine

Autori CNR:

  • TIZIANA DI RENZO
  • MARCO PREZIUSO
  • ANNA REALE
  • TERESA ZOTTA

Lingua: inglese

Abstract: In this study the occurrence of antibiotic resistance (AR) traits was evaluated in 184 lactic acid bacteria (LAB) strains belonging to the species Lactobacillus casei/paracasei/rhamnosus and isolated from various sources. The strains were tested for resistance at the cut-off values fixed by the European Food Safety Authority (EFSA) for the antibiotics ampicillin, chloramphenicol, clindamycin, gentamicin, erythromycin, kanamycin, streptomycin and tetracycline, in order to distinguish resistant from susceptible strains. The strains that were not inhibited at the cut-off concentrations for one or more antibiotics, namely 27 L. paracasei and 50 L. rhamnosus strains, were further examined for minimum inhibitory concentration (MIC) and presence of acquired genes encoding resistance to the specific antibiotics by PCR assays. A minority of these strains exhibited MIC values that indicated a potentially acquired AR for ampicillin (one L. paracasei strain), clindamycin (two L. paracasei and one L. rhamnosus strains), gentamicin (two L. rhamnosus strains) and tetracycline (two L. paracasei strains and one L. rhamnosus strain); however, the genetic determinants responsible for resistance could not be identified. This study highlighted a low frequency of AR phenotypes and the absence of the most frequently acquired AR genes in the L. casei/paracasei/rhamnosus strains examined, thus evidencing a low risk related to AR dissemination by these bacteria.

Lingua abstract: inglese

Pagine da: 1

Pagine a: 7

Pagine totali: 7

Rivista:

Annals of microbiology Springer
Paese di pubblicazione: Germania
Lingua: inglese
ISSN: 1590-4261

Numero volume: 65

DOI: 10.1007/s13213-014-1015-8

Referee: Sė: Internazionale

Stato della pubblicazione: Published version

Indicizzato da: Scopus [2-s2.0-84919934000]

Parole chiave:

  • Acquired antibiotic resistance
  • AR genes
  • AR phenotypes
  • Lactobacillus casei/paracasei/rhamnosus

URL: http://www.scopus.com/record/display.url?eid=2-s2.0-84919934000&origin=inward

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