[1]徐　结,侯　晓,张雪婧,等.牛源金黄色葡萄球菌凝固酶分型与致病因子检测[J].中国预防兽医学报,2019,(02):196-199.[doi:0.3969/j.issn.1008-0589.201806018]
　XU Jie,HOU Xiao,ZHANG Xue-jing,et al.Coagulation genotyping and virulence detection of Staphylococcus aureus from dairy cow[J].Chinese journal of preventive veterinary medicine,2019,(02):196-199.[doi:0.3969/j.issn.1008-0589.201806018]
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牛源金黄色葡萄球菌凝固酶分型与致病因子检测()
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《中国预防兽医学报》[ISSN:1008-0589/CN:23-1417/S]

卷:
期数:
2019年02
页码:
196-199
栏目:
研究简报
出版日期:
2019-02-15

文章信息/Info

Title:
Coagulation genotyping and virulence detection of Staphylococcus aureus from dairy cow
文章编号:
1008-0589(2019)02-0196-04
作者:
 

徐　结; 侯　晓; 张雪婧; 蒲万霞*

 (中国农业科学院 兰州畜牧与兽药研究所/新兽药重点开放实验室/甘肃省新兽药工程重点实验室，甘肃 兰州 730050)
Author(s):
 

XU Jie;  HOU Xiao;  ZHANG Xue-jing;  PU Wan-xia*

 (Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Key Laboratory of New Animal Drug Project,
Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China)
关键词:
奶牛乳房炎; 金黄色葡萄球菌; 凝固酶分型; 致病因子
Keywords:
 ; bovine mastitis;  ;  Staphylococcus aureus;  ;  coagulase genotype;  ;  virulence
分类号:
S852.61
DOI:
0.3969/j.issn.1008-0589.201806018
文献标志码:
A
摘要:
为了解青海和甘肃地区奶牛养殖场的金黄色葡萄球菌(S.aureus)基因型分布状况，本研究对来自该两个地区的210份奶样进行了S.aureus的分离与鉴定，利用凝固酶基因(Coa)扩增和限制性内切酶AluⅠ酶切方法对所有分离株进行了凝固酶多态性分型。并对不同凝固酶基因型的S.aureus进行了白细胞毒素F (LukF)、白细胞毒素S (LukS)、α溶血素(α-hemolysin)、β溶血素(β-hemolysin)等主要致病因子检测。结果显示，共分离鉴定出35株S.aureus (青海13株，甘肃22株)，所有分离株均能够扩增出Coa基因片段，并有5种PCR分型结果(本文简称PCR1～PCR5型)，其中PCR 1、4和5型只有1种亚型，而PCR 2型有3种亚型，PCR 3型有2种亚型。PCR 3型是青海(6/13)和甘肃地区(8/22)主要流行的基因型。致病因子检测结果显示，所有分离株均携带致病因子LukS和α溶血素；致病因子LukF和β溶血素检出率也很高，分别是30株(85.7 %)和31株(88.6 %)。β溶血素基因在甘肃地区检出率为95.5 % (21/22)，青海地区检出率为76.9 % (10/13)，致病因子LukF在甘肃地区检出率为91.0 % (20/22)，青海地区检出率为76.9 % (10/13)，且在各基因型中均有分布，甘肃地区S.aureus致病因子LukF和β溶血素检出率高于青海地区。本研究首次对青海和甘肃地区致奶牛乳房炎S.aureus进行了鉴定分析，为这两个地区奶牛乳房炎的防治提供了参考依据。
　
Abstract:
In order to understand the epidemic characteristics of Staphylococcus aureus in dairy farms in Qinghai and Gansu provinces, S.aureus isolates were isolated and identified from 210 dairy cow mastitis milk samples collected from Qinghai and Gansu provences, the coagulase polymorphism of all the isolates were typed by the coagulase gene amplification and restriction endonuclease Alu Ⅰ digestion method, and the main pathogenic factors of all the isolates were detected, including LukF, LukS, α-hemolysin, and β-hemolysin. The results showed that 35 isolates of S.aureus (13 isolates from Qinghai and 22 isolates from Gansu) were identified. The coagulase gene were able to be amplified in all isolates. There were 5 coagulase genotypes, of which only 1 subtype in type 1, 4 and 5, 3 subtypes in type 2, and 2 subtypes in type 3. Type 3 was the major genotype in Qinghai (6/13) and Gansu (8/22) provinces. The detection results of pathogenic factors showed that all the isolates carried LukS and α-hemolysin. The detection rates of LukF and β-hemolysin were 30 (85.7%) and 31 (88.6%), respectively. Of which β-hemolysin in Gansu and Qinghai provinces were 95.5% (21/22) and 76.9% (10/13), respectively, while the LukF in Gansu and Qinhai provinces were 91% (20/22) and 76.9% (10/13), respectively. The detection rates of virulence factors LukF and β hemolysin in Gansu were higher than those in Qinghai.

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                        (本文编辑：李　娜)

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更新日期/Last Update: 2019-03-07