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突尼斯犬猫肠球菌的物种分布、抗生素耐药性及毒力特征

Species distribution, antibiotic resistance and virulence traits in canine and feline enterococci in Tunisia.

作者信息

Ben Said Leila, Dziri Raoudha, Sassi Nadia, Lozano Carmen, Ben Slama Karim, Ouzari Imen, Torres Carmen, Klibi Naouel

机构信息

Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Université de Tunis El Manar , 2092 Tunis , Tunisia.

Área de Bioquímica y Biología Molecular, Universidad de La Rioja , Logroño , Spain.

出版信息

Acta Vet Hung. 2017 Jun;65(2):173-184. doi: 10.1556/004.2017.018.

Abstract

In order to investigate the possible role of dogs and cats in the carriage and potential dissemination of resistant enterococci, seventy faecal samples from dogs and cats were tested for enterococci. Fifty-eight enterococci were recovered. Isolates were identified as Enterococcus faecium (n = 31) and E. faecalis (n = 14) E. durans (n = 6), E. casseliflavus (n = 2), E. hirae and E. gallinarum (2 isolates each). Enterococcal isolates showed resistance to ciprofloxacin (n = 35), erythromycin (n = 31), tetracycline (n = 25), kanamycin (n = 15), streptomycin (n = 13), pristinamycin (n = 11), gentamicin (n = 10), chloramphenicol (n = 8), and linezolid (n = 6). The gene erm(B) was detected in 22 out of 31 erythromycin-resistant enterococci. All tetracycline-resistant enterococci carried tet(M) and/or tet(L) genes. The gene aac(6')-Ie-aph(2″)-Ia was identified in five of high-level gentamicin-resistant isolates, the genes aph(3')-IIIa and/or aac(6')-Ie-aph(2″)-Ia in eleven high-level kanamycin-resistant isolates and the gene ant(6)-Ia in eleven high-level streptomycin-resistant isolates. Only one strain harboured cat(A) gene, and five strains contained vat(E) or vat(D) genes. Virulence genes gel(E) (21 strains), esp (11 strains) and cylA/cylB (5 strains) were detected. High genetic diversity was demonstrated among E. faecium isolates by pulsed-field gel electrophoresis (PFGE). Dogs and cats can be carriers of antibiotic-resistant enterococci in their faeces that could shed into the household environment.

摘要

为了研究犬猫在耐万古霉素肠球菌携带及潜在传播中可能发挥的作用,对70份犬猫粪便样本进行了肠球菌检测。共分离出58株肠球菌。分离株鉴定为屎肠球菌(n = 31)、粪肠球菌(n = 14)、耐久肠球菌(n = 6)、格氏肠球菌(n = 2)、海氏肠球菌和鹑鸡肠球菌(各2株)。肠球菌分离株对环丙沙星(n = 35)、红霉素(n = 31)、四环素(n = 25)、卡那霉素(n = 15)、链霉素(n = 13)、利奈唑胺(n = 11)、庆大霉素(n = 10)、氯霉素(n = 8)和利奈唑胺(n = 6)耐药。在31株红霉素耐药肠球菌中,有22株检测到erm(B)基因。所有四环素耐药肠球菌均携带tet(M)和/或tet(L)基因。在5株高水平庆大霉素耐药分离株中鉴定出aac(6')-Ie-aph(2″)-Ia基因,在11株高水平卡那霉素耐药分离株中鉴定出aph(3')-IIIa和/或aac(6')-Ie-aph(2″)-Ia基因,在11株高水平链霉素耐药分离株中鉴定出ant(6)-Ia基因。仅1株携带cat(A)基因,5株含有vat(E)或vat(D)基因。检测到毒力基因gel(E)(21株)、esp(11株)和cylA/cylB(5株)。通过脉冲场凝胶电泳(PFGE)显示屎肠球菌分离株具有高度的遗传多样性。犬猫粪便中可携带耐抗生素肠球菌,并可能传播至家庭环境中。

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