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Development of a murine model of chronic Salmonella infection.

机译:慢性沙门氏菌感染的鼠模型的开发。

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The invasive disease caused by Salmonella typhimurium in mice resembles the acute phase of human typhoid fever caused by Salmonella typhi, and experimental murine salmonellosis is a widely used experimental model for systemic salmonellosis. In this paper we demonstrate that murine S. typhimurium infection can also be used to model the development of the chronic carrier state that develops in humans after infection with S. typhi. We describe a virulent variant of S. typhimurium that has decreased expression of AgfA fibers under all environmental conditions studied and that causes a chronic carrier state in BALB/c mice after peroral inoculation. The chronic carrier state is associated with persistence of bacteria in the small intestine, spleen, and liver, and chronic infection continues despite the development of protective immunity to challenge with virulent Salmonella.
机译:鼠伤寒沙门氏菌引起的侵袭性疾病类似于鼠伤寒沙门氏菌引起的人伤寒急性期,实验鼠鼠沙门氏菌病是系统性沙门氏菌病广泛使用的实验模型。在本文中,我们证明鼠鼠伤寒沙门氏菌感染也可用于模拟鼠伤寒沙门氏菌感染后人类体内慢性携带者状态的发展。我们描述了鼠伤寒沙门氏菌的一种强毒变异体,该变异体在所有研究的环境条件下均降低了AgfA纤维的表达,并在经口接种后在BALB / c小鼠中引起慢性携带者状态。慢性携带者状态与细菌在小肠,脾脏和肝脏中的持久性有关,尽管发展了针对强毒沙门氏菌攻击的保护性免疫,但慢性感染仍在继续。

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