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首页> 外文期刊>Infection and immunity >Chronic Proliferative Arthritis of Mice Induced by Mycoplasma arthritidis I. Induction of Disease and Histopathological Characteristics
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Chronic Proliferative Arthritis of Mice Induced by Mycoplasma arthritidis I. Induction of Disease and Histopathological Characteristics

机译:关节炎支原体诱导的小鼠慢性增生性关节炎I.疾病的诱导和组织病理学特征

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Mice injected intravenously with Mycoplasma arthritidis developed a chronic arthritis which persisted through at least 269 days. Rats similarly treated developed an acute short-term infection. The mouse disease was characterized by periods of remission and exacerbation and was proliferative in nature, gradually spreading to adjacent joints. M. arthritidis strain 158 P10 was found to be less arthritogenic for mice than for rats, but further passage of this strain in mice substantially increased its virulence. Unlike rats, mice appeared to be susceptible to a “toxin” of M. arthritidis and they developed a necrotic spreading abscess after subcutaneous administration of the organisms. Histopathological studies revealed that mice varied greatly in the degree of joint inflammation, destruction, and repair. The disease was characterized by (i) an initial acute phase with infiltration of the articular and periarticular tissues with polymorphonuclear leukocytes and a mild hyperplasia of the synovial membrane; (ii) a mixed acute-chronic phase in which new areas of acute inflammation developed alongside areas of chronic lesions; (iii) a chronic phase followed which was characterized by massive synovial proliferation with mononuclear cell infiltration, irregularity in the articulating cartilage, pannus formation, and “punched out” defects in cortical bone near cartilagenous osseous junctures. The clinical course and histopathological characteristics of the chronic phase of mouse arthritis induced by M. arthritidis closely resembled those of rheumatoid arthritis of man.
机译:静脉注射支原体的小鼠发展成为一种慢性关节炎,至少持续269天。接受类似治疗的大鼠发展为急性短期感染。小鼠疾病的特征在于缓解和加重期,并且本质上是增殖性的,逐渐扩散到相邻的关节。 M。人们发现关节炎小鼠158 P10的致关节炎作用不及大鼠,但该菌株在小鼠中的进一步传代大大提高了其毒力。与大鼠不同,小鼠似乎对 M的“毒素”敏感。皮下注射生物体后,关节炎发展为坏死性扩散脓肿。组织病理学研究表明,小鼠的关节炎症,破坏和修复程度差异很大。该疾病的特征是:(i)初始急性期,多形核白细胞浸润关节和关节周围组织,滑膜轻度增生。 (ii)急性-慢性混合阶段,其中新的急性炎症区域与慢性病变区域一起发展; (iii)慢性期,其特征在于滑膜大量增生,单核细胞浸润,关节软骨不规则,pan团形成,以及在软骨骨连接点附近的皮质骨“穿孔”。 M诱发的小鼠关节炎慢性期的临床过程和组织病理学特征。关节炎与人的类风湿关节炎非常相似。

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