犬源大肠杆菌分离株对四环素类药物耐药性的检测
用微量肉汤倍比稀释法测定四环素类等抗菌药物对53株犬源大肠杆菌分离株的最小抑菌浓度（MIC）,用PCR和DNA测序方法检测犬源大肠杆菌中四环素耐药基因（tet基因）,了解tet基因的流行情况、分析试验菌对四环素类药物的耐药机制。结果表明：25%的分离菌呈多重耐药现象,最多对8种药物耐药。分离菌对四环素类中的土霉素、四环素、多西环素耐药率高,耐药率介于69.8%~86.1%。基因检测结果显示,犬源大肠杆菌中共检测到5种tet基因,分别为tet A、tet B、tet C、tet G、tet L基因,都属于外排泵基因,未检测到核糖体保护基因。其中tet G基因的检出率最高,共检出39株（检出率达7...
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| Published in | 江西农业学报 Vol. 27; no. 10; pp. 104 - 107 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
河南农业大学牧医工程学院,河南郑州450002
2015
河南牧业经济学院,河南郑州450045%河南农业大学牧医工程学院,河南郑州,450002 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-8581 |
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| Abstract | 用微量肉汤倍比稀释法测定四环素类等抗菌药物对53株犬源大肠杆菌分离株的最小抑菌浓度（MIC）,用PCR和DNA测序方法检测犬源大肠杆菌中四环素耐药基因（tet基因）,了解tet基因的流行情况、分析试验菌对四环素类药物的耐药机制。结果表明：25%的分离菌呈多重耐药现象,最多对8种药物耐药。分离菌对四环素类中的土霉素、四环素、多西环素耐药率高,耐药率介于69.8%~86.1%。基因检测结果显示,犬源大肠杆菌中共检测到5种tet基因,分别为tet A、tet B、tet C、tet G、tet L基因,都属于外排泵基因,未检测到核糖体保护基因。其中tet G基因的检出率最高,共检出39株（检出率达70%）,有40个菌株同时检出2种或2种以上tet基因,有3株同时检测到4种tet基因,仅有4株未检测到任何tet基因。研究表明：犬源大肠杆菌对常用抗菌药物的耐药情况十分严重,tet基因的携带率高,主动外排是犬源大肠杆菌对四环素类耐药的主要机制。 |
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| AbstractList | S859.7; 用微量肉汤倍比稀释法测定四环素类等抗菌药物对53株犬源大肠杆菌分离株的最小抑菌浓度(MIC),用PCR和DNA测序方法检测犬源大肠杆菌中四环素耐药基因(tet基因),了解tet基因的流行情况、分析试验菌对四环素类药物的耐药机制.结果表明:25％的分离菌呈多重耐药现象,最多对8种药物耐药.分离菌对四环素类中的土霉素、四环素、多西环素耐药率高,耐药率介于69.8％～86.1％.基因检测结果显示,犬源大肠杆菌中共检测到5种tet基因,分别为tetA、tetB、tetC、tetG、tetL基因,都属于外排泵基因,未检测到核糖体保护基因.其中tetG基因的检出率最高,共检出39株(检出率达70％),有40个菌株同时检出2种或2种以上tet基因,有3株同时检测到4种tet基因,仅有4株未检测到任何tet基因.研究表明:犬源大肠杆菌对常用抗菌药物的耐药情况十分严重,tet基因的携带率高,主动外排是犬源大肠杆菌对四环素类耐药的主要机制. 用微量肉汤倍比稀释法测定四环素类等抗菌药物对53株犬源大肠杆菌分离株的最小抑菌浓度（MIC）,用PCR和DNA测序方法检测犬源大肠杆菌中四环素耐药基因（tet基因）,了解tet基因的流行情况、分析试验菌对四环素类药物的耐药机制。结果表明：25%的分离菌呈多重耐药现象,最多对8种药物耐药。分离菌对四环素类中的土霉素、四环素、多西环素耐药率高,耐药率介于69.8%~86.1%。基因检测结果显示,犬源大肠杆菌中共检测到5种tet基因,分别为tet A、tet B、tet C、tet G、tet L基因,都属于外排泵基因,未检测到核糖体保护基因。其中tet G基因的检出率最高,共检出39株（检出率达70%）,有40个菌株同时检出2种或2种以上tet基因,有3株同时检测到4种tet基因,仅有4株未检测到任何tet基因。研究表明：犬源大肠杆菌对常用抗菌药物的耐药情况十分严重,tet基因的携带率高,主动外排是犬源大肠杆菌对四环素类耐药的主要机制。 |
| Author | 崔耀明 宋笑颜 王玲飞 刘保光 田亚凯 胡功政 |
| AuthorAffiliation | 河南农业大学牧医工程学院,河南郑州450002 河南牧业经济学院,河南郑州450045 |
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| Author_FL | WANG Ling-fei HU Gong-zheng SONG Xiao-yan LIU Bao-guang CUI Yao-ming TIAN Ya-kai |
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| DocumentTitleAlternate | Detection of Resistance of Dog-derived Escherichia coil Isolates to Tetracyclines |
| DocumentTitle_FL | Detection of Resistance of Dog-derived Escherichia coli Isolates to Tetracyclines |
| EndPage | 107 |
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| Keywords | tet基因 Tetracyclines 多重耐药 Escherichia coli Multidrug resistance Tetracycline-resistant gene (tet gene) 大肠杆菌 四环素类药物 |
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| Notes | Escherichia coli ; Tetracyclines ; Tetracycline-resistant gene （tet gene） ; Multidrug resistance 36-1124/S The MICs of tetracyclines and other antibacterial agents against 53 strains of Escherichia coli isolated from dogs were determined by using broth microdilution, and the presence of tetracycline-resistant genes （tet genes） in these strains was investiga- ted through PCR and DNA sequencing. The aims of this study are to understand the prevalence of tet genes in the tested strains, and to analyze their resistant mechanism to tetracyclines. The results showed that 25% of E. coli isolates from dogs expressed multidrug resistance phenotypes, and were resistant to at most 8 kinds of antibacterial drugs. The resistant rate of the tested isolates to oxytetra- cycline, tetracycline and doxycycline was high, and ranged from 69.8% to 86.1%. PCR and DNA sequencing indicated that 5 tet genes （tetA ,tetB ,tetC ,tetG andtetL） were detected in dog-derived E. coli isolates, and they all belonged to efflux-pump genes; while |
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| PublicationTitle | 江西农业学报 |
| PublicationTitleAlternate | Acta Agriculturae Jiangxi |
| PublicationTitle_FL | Acta Agriculturae Jiangxi |
| PublicationYear | 2015 |
| Publisher | 河南农业大学牧医工程学院,河南郑州450002 河南牧业经济学院,河南郑州450045%河南农业大学牧医工程学院,河南郑州,450002 |
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| SubjectTerms | tet基因 四环素类药物 多重耐药 大肠杆菌 |
| Title | 犬源大肠杆菌分离株对四环素类药物耐药性的检测 |
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