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我国部分省市区鼠伤寒沙门菌的质粒谱分型及其分布 |
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潘若男1 魏旭兰1 罗明1 何晓青2 侯惠珍3 周刚4 谢一俊5
【摘要】 目的 探明各省市间鼠伤寒沙门菌感染流行之间的关系。方法 1980～1995年鼠伤寒沙门菌感染在我国北方和南方流行期间，自19个省、自治区、直辖市和香港特别行政区收集鼠伤寒沙门菌2 655株做质粒谱分析。将质粒图谱编码，小质粒带组成的图形分别用大写字母编码为A～J，没有小质粒的编码为O;并按大质粒分子量140～20 Md依次从9编码到0;两个及两个以上大质粒用两位或两位以上数字表示。结果 2 655株鼠伤寒沙门菌可分为11个类群，168个质粒谱型，常见的质粒谱型有52个。O 4质粒谱型在16个省市区和香港广泛分布；O 5质粒谱型在5个省和香港分离到，以江西和湖北最多；J 4质粒谱型在7个省市区分离到，以江西最多；A类群的5个质粒谱型在河南引起医院内感染的大流行；A 6质粒谱型还在新疆和安徽分离到；E类群6个质粒谱型主要在新疆流行；3个质粒谱型在上海引起医院内感染；E 82质粒谱型在辽宁引起医院内感染和食物中毒；F 4质粒谱型在4个省分离到，以江西和福建多。此外还有一些地区性流行的质粒谱型。结论 同一起爆发中菌株质粒谱型相同；两地流行时质粒谱型和噬菌体型可以不同。
【关键词】 沙门氏菌，鼠伤寒 质粒
Plasmid Profile Typing of Salmonella Typhimurium and Its Distribution in Some Provinces and Cities of China Pan Ruonan, Wei Xulan, Luo Ming, et al. Nanchang Institute of Medical Sciences, Nanchang 330001
【Abstract】 Objective To study the relationship between the infection and prevalence of Salmonella typhimurium. Methods From 1980 to 1995, when Salmonella typhimurium infection was prevalent in north and south China, a total of 2 655 isolates of Salmonella typhimurium were collected from 19 provinces, municipalities, and autonomous regions and Hong Kong Special Administrative Region for plasmid profile analysis. The profiles consisting of some small plamids were recorded with capital letters A to J, and the profile which was free from small plasmid was recorded with capital letter O. Large plasmid in molecular weights of 140-20 Mdal showing in profiles was recorded with Arabic numerals 9 to 0 respectively. Having two or more than two large plasmids, the profile was recorded with two or more Arabic numerals. Results The 2 655 strains were divided into 11 plasmid profile groups and 168 plasmid profile types. Of 52 plasmid profile types frequently isolated, plasmid profile type O 4 was distributed extensively in 16 provinces, municipalities, and autonomous rehions and Hong Kong. Plasmid profile type O 5 was isolated in 5 provinces and Hong Kong, mostly in Jiangxi and Hubei. P[1] [2] [3] 下一页
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