PMID- 31989429 OWN - NLM STAT- MEDLINE DCOM- 20201019 LR - 20210216 IS - 1573-4978 (Electronic) IS - 0301-4851 (Linking) VI - 47 IP - 3 DP - 2020 Mar TI - Detection of antibiotic resistance profiles and aminoglycoside-modifying enzyme (AME) genes in high-level aminoglycoside-resistant (HLAR) enterococci isolated from raw milk and traditional cheeses in Turkey. PG - 1703-1712 LID - 10.1007/s11033-020-05262-4 [doi] AB - The aim of this study was isolation and identification of the high-level aminoglycoside-resistant (HLAR) enterococci in raw milk and dairy products and to analyze their antibiotic resistance and the presence of aminoglycoside-modifying enzyme (AME) genes. A total of 59 HLAR enterococci were isolated from raw milk and traditional cheese samples. Thirty-nine of the 59 HLAR enterococci were isolated on streptomycin-containing agar medium, while the other 20 HLAR strains were isolated on gentamicin containing agar medium. The 59 HLAR enterococci were identified as 26 E. faecalis (44.07%), 18 E. faecium (30.51%), 13 E. durans (22.03%), and two E. gallinarum (3.39%) by species-specific PCR. Disk diffusion tests showed that teicoplanin were the most effective antibiotics used in this study, while 89.83% of isolates were found to be resistant to tetracycline. High rates of multiple antibiotic resistance were detected in HLAR isolates. Minimum inhibitory concentration (MIC) values of HLAR enterococci against streptomycin and gentamicin were found in the range of 64 to > 4096 microg/mL. Forty-seven (79.66%) of the 59 HLAR enterococci were found to be both high-level streptomycin-resistant (HLSR) and high-level gentamicin-resistant (HLGR) by MIC tests. However, no correlation was found between the results of the disk diffusion and MIC tests for gentamicin and streptomycin in some HLAR strains. The aph(3')-IIIa (94.92%) was found to be most prevalent AME gene followed by ant(4')-Ia (45.76%), ant(6')-Ia (20.34%) and aph(2'')-Ic (10.17%). None of the isolates contained the aac(6')-Ie-aph(2'')-Ia, aph(2'')-Ib or aph(2'')-Id genes. None of the AME-encoding genes were identified in E. durans RG20.1, E. faecalis RG22.4, or RG26.1. In conclusion, HLAR enterococci strains isolated in this study may act as reservoirs in the dissemination of antibiotic resistance genes. FAU - Ozdemir, Rahime AU - Ozdemir R AD - Department of Food Engineering, Faculty of Engineering, Suleyman Demirel University, Isparta, Turkey. FAU - Tuncer, Yasin AU - Tuncer Y AUID- ORCID: 0000-0002-2075-5027 AD - Department of Food Engineering, Faculty of Engineering, Suleyman Demirel University, Isparta, Turkey. yasintuncer@sdu.edu.tr. LA - eng GR - 4739-YL1-16/Suleyman Demirel Universitesi/ PT - Journal Article DEP - 20200127 PL - Netherlands TA - Mol Biol Rep JT - Molecular biology reports JID - 0403234 RN - 0 (Aminoglycosides) RN - 0 (Bacterial Proteins) RN - 0 (Gentamicins) RN - 61036-62-2 (Teicoplanin) RN - EC 2.7.1.95 (Kanamycin Kinase) RN - Y45QSO73OB (Streptomycin) SB - IM MH - Aminoglycosides/*pharmacology MH - Animals MH - Bacterial Proteins/*genetics/metabolism MH - Cheese/*microbiology MH - Drug Resistance, Bacterial/*genetics MH - Drug Resistance, Multiple, Bacterial/*genetics MH - Enterococcus/classification/*genetics/metabolism MH - Gentamicins/pharmacology MH - Humans MH - Kanamycin Kinase/genetics/metabolism MH - Microbial Sensitivity Tests/methods MH - Milk/*microbiology MH - Streptomycin/pharmacology MH - Teicoplanin/pharmacology MH - Turkey OTO - NOTNLM OT - Aminoglycoside-modifying enzymes OT - Cheese OT - Enterococcus OT - High-level aminoglycoside resistance OT - Raw milk OT - aph(3')-IIIa EDAT- 2020/01/29 06:00 MHDA- 2020/10/21 06:00 CRDT- 2020/01/29 06:00 PHST- 2019/07/31 00:00 [received] PHST- 2020/01/18 00:00 [accepted] PHST- 2020/01/04 00:00 [revised] PHST- 2020/01/29 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2020/01/29 06:00 [entrez] AID - 10.1007/s11033-020-05262-4 [pii] AID - 10.1007/s11033-020-05262-4 [doi] PST - ppublish SO - Mol Biol Rep. 2020 Mar;47(3):1703-1712. doi: 10.1007/s11033-020-05262-4. Epub 2020 Jan 27.