2010--2012年上海市两家哨点医院门诊腹泻病例副溶血弧菌感染状况及菌株分子特征分析  被引量:9

The infection and molecular characteristics of Vibrio parahaemolyticus isolated from intestinal outpatient in two sentinel hospitals in Shanghai,2010 -2012

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作  者:陈海丽[1] 周海健[5] 宰淑蓓[2] 蔡金凤[2] 钱方兴[3] 马亮[4] 王茉婴[2] 沈震[2] 李杨[4] 张军[2] 胡芸文[1] 阚飙[6] 朱召芹[1] 

机构地区:[1]上海市公共卫生临床中心病原体检测与生物安全部,200000 [2]上海市公共卫生临床中心医学检验科,200000 [3]上海市长宁区中心医院感染科 [4]上海市东方医院体检科 [5]中国疾病预防控制中心传染病预防控制所呼吸道传染病室 [6]中国疾病预防控制中心传染病预防控制所腹泻病室

出  处:《中华预防医学杂志》2015年第3期233-236,共4页Chinese Journal of Preventive Medicine

基  金:基金项目:国家自然科学基金(31200108);十二五科技重大专项(2012ZX10004-11,2013ZX10004221-004);上海市公共卫生临床中心启动基金(201310);上海市卫生局青年基金(20124467)

摘  要:目的分析2010--2012年上海市两家哨点医院肠道门诊腹泻病例副溶血弧菌感染情况,以及菌株携带毒力基因状况和分子特征。方法于2010--2012年,以上海市两家医院的肠道门诊为监测哨点,以医院的2729例腹泻病例为研究对象,采集每例1份粪便样本。采用硫代硫酸盐柠檬酸盐胆盐蔗糖(TCBS)琼脂培养基及生化反应分离和鉴定副溶血弧菌,采用多重PCR检测分离菌株的毒力基因携带情况,采用PFGE对菌株进行聚类分析,同时进行多位点序列分型(MLST)。结果2729份样本中,分离到副溶血弧菌30株,2010--2012年的分离率分别为1.1%(11/973)、1.0%(11/1120)、1.3%(8/636)。携带tlh、tdh、trh基因的菌株分别占100%(30/30)、97%(29/30)、0-30株副溶血弧菌临床分离株共分为13种PFGE型(P1~13)和3种MLST型(ST-189、STG99、ST-3)。其中,P4型菌株占30%(9/30),1x)、P10型均占12%(4/30),P1、P2、P12、P13型均占7%(2/30),其余PFGE型均占3%(1/30);ST-3型占84%(25/30),ST-189型占13%(4/30),ST-799型占3%(1/30)。结论2010--2012年上海市两家哨点医院腹泻病例副溶血弧菌感染率较低;副溶血弧菌临床分离株均携带t腕基因,不携带£旃基因,MLST型以ST-3型为主。Objective To analyze virulence genes and molecular characteristics of Vibrio parahaemolyticus isolated from sporadic cases with diarrhea in tow sentinel hospitals of Shanghai, 2010 - 2012. Methods A total of 2 729 stool samples were collected from two surveillance sentinel hospitals in Shanghai 2010 -2012. Vibrio parahaemolyticus strains were isolated and identified from diarrhea out patients using TCBS agar plates and biochemical reactions. Thermostable direct hemolysingene (tdh) , thennostable- related hemolysin gene (trh), hemolysin gene (tlh) were detected by multiplex PCR method. Isolates we,'e analyzed by PFGE and MLST. The PFGE profiles were analyzed using BioNumeries software. Results A total of 30 clinical Vibrio parahaemolyticus strains isolated from 2 729 stool samples. The anually Vibrio parahaemolyticus isolation rate during 2010 to 2012 were 1.1% ( 11/973 ), 1.0% ( 11/1 120 ) and 1.3 % ( 8/ 636)respectively. The PCR positive rates of virulence genes tlh, tdh and trh were 100%, 97% and 0 respectively. The Vibrio parahaemolyticus strains were divided into 13 PFGE types ( P1 - P13 ) and 3 STtypes(ST-189, ST-799, ST-3). Among 13 PFGE types, P4 was the main PFGE type, accounting for 30% (9/30). P9, P10 were accounting for 12% (4/30) respectively, P1, P2, P12, P13 were accounting for 7% (2/30) respectively,the others types were 3% (1/30)respectively . MLST analysis results showed there are three ST types,ST3 was 84% (25/30), ST189 and ST799 were accounting for 13% (4/30) and 3% ( 1/ 30) respectively. Conclusion The infection rate of Vibrio parahaemolyticus was not very high from 2010 - 2012 in Shanghai, all strains were positive for tlh and negative for trh. ST3 was the major type of Vibrio parahaemolyticus.

关 键 词:弧菌 副溶血性 电泳 凝胶 脉冲场 多位点序列分型 

分 类 号:R512.5[医药卫生—内科学]

 

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