Identification of staphylococcal cassette chromosome mec in Staphylococcus aureus and non-aureus staphylococci from dairy cattle in Belgium: Comparison of multiplex PCR and whole genome sequencing

Autor: Tchamba, Cyrille Ngassam, Touzain, Fabrice, Fergestad, Marte, de Visscher, Anneleen, l'Abee-Lund, Trine, De Vliegher, Sarne, Wasteson, Yngvild, Blanchard, Yannick, Argudín, Maria, Mainil, Jacques, Thiry, Damien
Přispěvatelé: Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire [Liège], Laboratoire de Ploufragan-Plouzané-Niort [ANSES], Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Norwegian University of Life Sciences (NMBU), Research group of Comparative Physiology (EXCOPHYSIO), Faculty of Veterinary Medicine - Faculteit Diergeneeskunde [UGhent, Belgium], Universiteit Gent = Ghent University (UGENT)-Universiteit Gent = Ghent University (UGENT), Cliniques Universitaires Saint-Luc [Bruxelles], This research was part of the ERA-Net ANIHWA (ANImal Health and WelfAre) project 'MRSA_BACTERIOPHAGE' (Bacteriophages as alternative to antimicrobial treatments of bovine mastitis caused by methicillin-resistant staphylococci, with emphasis on methicillin-resistant Staphylococcus aureus). The project was funded by the Federal Public Service – Health, Food Chain Safety and Environment (University of Liège), the Research Fund Flanders (FWO, University of Ghent), the Research Council of Norway (University of Life Sciences, Oslo) and the French National Research Agency (ANSES, Ploufragan)., ANR-15-ANWA-0005,MRSA_BACTERIOPHAGES,Bacteriophages as alternative to antimicrobial treatments of bovine mastitis caused by methicillin-resistant staphylococci -MRS-, with emphasis on methicillin-resistant Staphylococcus aureus -MRSA-(2015), European Project: 291815,EC:FP7:KBBE,FP7-ERANET-2011-RTD,ANIHWA(2012)
Rok vydání: 2023
Předmět:
Zdroj: Research in Veterinary Science
Research in Veterinary Science, 2023, 155, pp.150-155. ⟨10.1016/j.rvsc.2023.01.011⟩
ISSN: 0034-5288
DOI: 10.1016/j.rvsc.2023.01.011
Popis: International audience; The present study compared multiplex PCR (mPCR) and Whole Genome Sequencing (WGS) using the SCCmecFinder database to identify the Staphylococcal Cassette Chromosome (SCC) mec in five Staphylococcus aureus (SA) and nine non-aureus staphylococci (NAS) isolated from dairy cattle. mPCR identified an SCCmecIV in four SA and one NAS, but could not differentiate between SCCmecII and IV in the fifth SA, that all harbored the mecA gene and were phenotypically resistant to cefoxitin. SCCmecFinder confirmed the presence of an SCCmecIVc(2B) in four SA and of the SCCmecIVa(2B) in the fifth SA and the one NAS. Both methods also detected one untypeable SCCmec in another cefoxitin-resistant NAS harboring the mecA gene and a pseudo SCCmec in one cefoxitin-sensitive NAS harboring one mecC-related gene. No SCCmec elements were identified either in one cefoxitin-sensitive NAS harboring the mecA2 gene, or in five NAS (one resistant and four sensitive to cefoxitin) harboring the mecA1 gene. SCCmecFinder could even not identify the presence of any mecA1 gene in these five NAS, whose presence was nevertheless confirmed by ResFinder. The conclusions of this study are: (i) mPCR and WGS sequencing using SCCmecFinder are complementary methodologies to identify SCCmec; (ii) SCCmecFinder and ResFinder to a lesser extent cannot identify all mec gene allotypes; (iii) a specific classification of the SCCmec in NAS would be epidemiologically helpful; (iv) presence of a mecA gene and a complete SCCmec is linked to cefoxitin resistance, whereas presence of other mec genes and of pseudo or no SCCmec is not.
Databáze: OpenAIRE
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