从患乳房炎奶牛的乳汁中分离出的凝固酶阳性葡萄球菌的生物型

Biovars of coagulase-positive staphylococci isolated from bovine mastitic milk.

作者信息

García López M L, García Fernández M C, García Armesto M R, Prieto M, Otero A, Fernández Alvarez M F

机构信息

Departamento de Higiene y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad de León.

出版信息

Microbiologia. 1990 Jun;6(1):31-6.

PMID:2206468

Abstract

Fifty strains of coagulase-positive staphylococci associated with bovine mastitis were biotyped. Of them, 20 were identified as biovar C (cattle & sheep), 17 as biovar B (poultry & swine), 2 as biovar D (hares) and 1 as biovar F (pigeon & fox). Of the remaining strains, 2 were closely related to human biovar A, 2 failed one property to be classified as biovar B, 3 shared properties of biovars B and D and 3 could not be identified. Bovine strains belonging to biovar C formed an heterogeneous group showing differences in crystal violet growth type and production of alpha haemolysin. Only strains associated with biovar A were Tween 80 positive. The highest incidence of lytic reactions amongst all biovars was with phages 42 E (III) and 102 (IV). Antibiotic resistance was most frequently found in biovar C (65%). The 2 strains in biovar D, one classed as biovar C and one as intermediate, were enterotoxigenic (C or D toxins).

摘要

对50株与牛乳腺炎相关的凝固酶阳性葡萄球菌进行了生物分型。其中，20株被鉴定为生物变种C（牛和羊），17株为生物变种B（家禽和猪），2株为生物变种D（野兔），1株为生物变种F（鸽子和狐狸）。其余菌株中，2株与人类生物变种A密切相关，2株因一项特性不符合而未能归类为生物变种B，3株兼具生物变种B和D的特性，3株无法鉴定。属于生物变种C的牛菌株形成了一个异质群体，在结晶紫生长类型和α溶血素产生方面存在差异。只有与生物变种A相关的菌株对吐温80呈阳性。所有生物变种中，裂解反应发生率最高的是噬菌体42E（III）和102（IV）。生物变种C中抗生素耐药性最为常见（65%）。生物变种D中的2株菌株，一株归类为生物变种C，一株为中间型，具有产肠毒素性（C或D毒素）。