Zamora J, Reinhardt G, Macías P
Instituto de Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.
Rev Med Chil. 1998 Jul;126(7):788-92.
Pathogenic strains of Yersinia enterocolitica harbor a virulence plasmid of 45-48 megadalton that can be detected using different techniques. Rodents are important reservoirs of Y enterocolitica.
To investigate the carrier status of Y enterocolitica in murine rodents.
Two hundred sixty-one mice and rats were captured in rural and urban areas of Valdivia. Y enterocolitica was cultured from viscera and fecal homogenates. Virulence plasmids were detected using crystal violet binding.
Thirteen Y enterocolitica strains were isolated from 11 rodents. Ten strains belonged to the biotype 1 and three to the biotype 4, serotype O:3. The most frequently infected rodent species were R norvergicus (20%), followed by A longipilis (11%), A olivaceus (2%) and O longicaudatus (2%).
Rodents, and specially the domestic rat, can be an important source of Y enterocolitica infection for human and susceptible animal species.
小肠结肠炎耶尔森菌致病菌株携带一个45 - 48兆道尔顿的毒力质粒，可通过不同技术检测到。啮齿动物是小肠结肠炎耶尔森菌的重要宿主。
调查鼠类啮齿动物中小肠结肠炎耶尔森菌的携带状况。
在瓦尔迪维亚的农村和城市地区捕获261只小鼠和大鼠。从小肠结肠炎耶尔森菌的内脏和粪便匀浆中进行培养。使用结晶紫结合法检测毒力质粒。
从11只啮齿动物中分离出13株小肠结肠炎耶尔森菌菌株。10株属于生物型1，3株属于生物型4，血清型O:3。最常感染的啮齿动物种类是褐家鼠（20%），其次是长须姬鼠（11%）、青毛鼠（2%）和长尾攀鼠（2%）。
啮齿动物，特别是家鼠，可能是人类和易感动物物种小肠结肠炎耶尔森菌感染的重要来源。
