中国兽药杂志
中國獸藥雜誌
중국수약잡지
CHINESE JOURNAL OF VETERINARY DRUG
2015年
2期
13-17
,共5页
董栋%商军%钱晓璐%田恺
董棟%商軍%錢曉璐%田愷
동동%상군%전효로%전개
粪肠球菌%耐药性%基因型%抗菌药物
糞腸毬菌%耐藥性%基因型%抗菌藥物
분장구균%내약성%기인형%항균약물
Enterococcus faecalis%antimicrobial resistance%genotype%antimicrobial agents
为了解上海地区规模化猪场中粪肠球菌的耐药性和基因型,2013年3月-2014年5月从上海地区10个规模化养猪场收集到分离鉴定的粪肠球菌133株,采用微量肉汤稀释法对12种抗菌药物进行药敏试验,采用PCR技术分别检测分离株中β-内酰胺类抗生素耐药相关基因( TEM)、氨基糖苷类抗生素耐药相关基因[aac(6’)/aph(2”)和aph(3’)-Ⅲ和ant(6)-Ⅰ]、四环素耐药相关基因( tetM)、红霉素耐药相关基因( ermB和mefA)和万古霉素耐药相关基因( vanA和vanB)。结果显示,在133株粪肠球菌中,耐药基因ermB、tetM、TEM、ant(6)-Ⅰ、aac(6’)/aph2”、aph(3’)-Ⅲ、vanA的检出率分别为:95.5%(127/133)、91.0%(121/133)、63.2%(84/133)、45.9%(61/133)、42.1%(56/133)、24.1%(32/133)、3.0%(4/133);未检出mefA和vanB 基因的菌株。分离菌株对12种抗菌药物的耐药性较为严重,且以6~9耐为主要耐药株,占81.2%。试验表明,上海地区猪源粪肠球菌多重耐药现象严重,携带抗菌药物相关耐药基因是导致分离株耐药的主要原因。
為瞭解上海地區規模化豬場中糞腸毬菌的耐藥性和基因型,2013年3月-2014年5月從上海地區10箇規模化養豬場收集到分離鑒定的糞腸毬菌133株,採用微量肉湯稀釋法對12種抗菌藥物進行藥敏試驗,採用PCR技術分彆檢測分離株中β-內酰胺類抗生素耐藥相關基因( TEM)、氨基糖苷類抗生素耐藥相關基因[aac(6’)/aph(2”)和aph(3’)-Ⅲ和ant(6)-Ⅰ]、四環素耐藥相關基因( tetM)、紅黴素耐藥相關基因( ermB和mefA)和萬古黴素耐藥相關基因( vanA和vanB)。結果顯示,在133株糞腸毬菌中,耐藥基因ermB、tetM、TEM、ant(6)-Ⅰ、aac(6’)/aph2”、aph(3’)-Ⅲ、vanA的檢齣率分彆為:95.5%(127/133)、91.0%(121/133)、63.2%(84/133)、45.9%(61/133)、42.1%(56/133)、24.1%(32/133)、3.0%(4/133);未檢齣mefA和vanB 基因的菌株。分離菌株對12種抗菌藥物的耐藥性較為嚴重,且以6~9耐為主要耐藥株,佔81.2%。試驗錶明,上海地區豬源糞腸毬菌多重耐藥現象嚴重,攜帶抗菌藥物相關耐藥基因是導緻分離株耐藥的主要原因。
위료해상해지구규모화저장중분장구균적내약성화기인형,2013년3월-2014년5월종상해지구10개규모화양저장수집도분리감정적분장구균133주,채용미량육탕희석법대12충항균약물진행약민시험,채용PCR기술분별검측분리주중β-내선알류항생소내약상관기인( TEM)、안기당감류항생소내약상관기인[aac(6’)/aph(2”)화aph(3’)-Ⅲ화ant(6)-Ⅰ]、사배소내약상관기인( tetM)、홍매소내약상관기인( ermB화mefA)화만고매소내약상관기인( vanA화vanB)。결과현시,재133주분장구균중,내약기인ermB、tetM、TEM、ant(6)-Ⅰ、aac(6’)/aph2”、aph(3’)-Ⅲ、vanA적검출솔분별위:95.5%(127/133)、91.0%(121/133)、63.2%(84/133)、45.9%(61/133)、42.1%(56/133)、24.1%(32/133)、3.0%(4/133);미검출mefA화vanB 기인적균주。분리균주대12충항균약물적내약성교위엄중,차이6~9내위주요내약주,점81.2%。시험표명,상해지구저원분장구균다중내약현상엄중,휴대항균약물상관내약기인시도치분리주내약적주요원인。
This study was conducted to investigate the antibiotic susceptibility and resistance genotypes in Enterococcus faecalis strains isolated from ten Large-scale pig farms in Shanghai. 133 strains of E. faecalis were collected between March 2013 and May 2014. The susceptibility testing was performed by broth microdilution, and the genotypes of β-lactam antibiotics resistance-associated gene(TEM), aminoglycoside genes[aac(6’)/aph(2”), aph(3’)-Ⅲ and ant(6)-Ⅰ], tetracycline gene(tetM), erythromycin genes(ermB and mefA) and vancomycin genes( vanA and vanB ) were analyzed by PCR. The positive rate of the resistance genes ermB, tetM, TEM, ant(6)-Ⅰ, aac(6’)/aph2”, aph(3’)-Ⅲ, vanA in the 133 strains of E. faecalis tested were 95.5%(127/133), 91.0%(121/133), 63.2%(84/133), 45.9%(61/133), 42.1%(56/133), 24.1%(32/133), and 3.0%(4/133), respectively. No mefA and vanB gene strains were detected. 12 kinds of antibacterial drug resistance were relatively serious and 6~9 resistance as the main drug resistant strains were detected,accounting for 81.2%. This study shows that multidrug resistance of E. faecalis was a serious issue, and resistance genes harbored were the very important reasons for resistance to antibiotics in E. faecalis.