首页> 外文期刊>Laboratory Animal Science >Increased expression of vascular cell adhesion molecule-1 by the aortic endothelium of rabbits with Pasteurella multocida pneumonia.
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Increased expression of vascular cell adhesion molecule-1 by the aortic endothelium of rabbits with Pasteurella multocida pneumonia.

机译:多杀性巴氏杆菌肺炎兔的主动脉内皮细胞增加血管细胞粘附分子-1的表达。

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摘要

The effect of a respiratory tract infection with P. multocida on vascular cell adhesion molecule-1 (VCAM-1) expression by aortic endothelial cells and on the endothelial ultrastructure was examined in 6 SPF New Zealand White rabbits infected by theinstillation of a suspension of live organisms into the nose and in 13 conventionally raised rabbits with naturally acquired P. multocida infection. 7 SPF rabbits maintained in a disease-free environment were untreated controls. Rabbits were killed 50 days after infection, the aorta was excised, and the endothelial cells expressing VCAM-1 were identified by immunohistochemistry. All infected animals had pneumonitis and leukocytosis. In SPF rabbits the total leukocyte count was highest 25 days after infection. There was a significant increase in the number of VCAM-1-positive aortic endothelial cells in infected SPF rabbits (34?/104 endothelial cells; n=5) and rabbits with naturally acquired infection (57?4/104 endothelial cells; n=5) compared with control animals (12?/104 endothelial cells; n = 4). Morphological alterations in infected rabbits were consistent with injury. It is concluded that infection at remote sites can activate arterial endothelium and induce the expression of VCAM-1.
机译:在6只SPF新西兰白兔中,滴注活悬液感染了多杀性巴氏杆菌呼吸道感染对主动脉内皮细胞血管细胞粘附分子1(VCAM-1)表达和内皮超微结构的影响。生物体进入鼻子,并在13只常规饲养的自然感染多杀性巴氏杆菌感染的兔子中。维持在无病环境中的7只SPF兔为未经治疗的对照。感染后50天处死兔子,切除主动脉,并通过免疫组织化学鉴定表达VCAM-1的内皮细胞。所有感染的动物都患有肺炎和白细胞增多。在SPF兔中,感染后25天白细胞总数最高。受感染的SPF兔(34?/ 104内皮细胞; n = 5)和自然感染的兔子(57?4/104内皮细胞; n = 5)中,VCAM-1阳性主动脉内皮细胞的数量显着增加。 5)与对照动物(12/104个内皮细胞; n = 4)相比。受感染兔子的形态学改变与损伤一致。结论是,远端感染可激活动脉内皮并诱导VCAM-1的表达。

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