Mycobacterium avium infection of gut mucosa in mice associated with late inflammatory response and intestinal cell necrosis.

Mycobacterium avium infection of gut mucosa in mice associated with late inflammatory response and intestinal cell necrosis.
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小鼠肠道粘膜的鸟分枝杆菌感染与晚期炎症反应和肠细胞坏死有关。

DOI:
10.1099/00222615-47-8-725
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发表时间:
1998
影响因子:
3
通讯作者:
Bermudez,LE
Bermudez,LE
中科院分区:
医学3区
文献类型:
--
作者:
Kim,SY;Goodman,JR;Petrofsky,M;Bermudez,LE

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鸟分枝杆菌是一种细胞内病原体,与获得性免疫缺陷综合征 (AIDS) 的播散性感染有关。艾滋病患者似乎获得了 M。 avium主要通过胃肠道。先前的研究表明,健康小鼠给予M. 2-4周后经口发生播散性感染。 M 的主要站点。禽流感侵袭的肠粘膜是回肠末端。了解有关 M 病理生理学的更多信息。肠粘膜感染,C57BL/6 bg+ bg+小鼠经口感染M. avium。 aviumstrain 101 和每组六只小鼠每周被处死,持续 8 周。然后准备回肠末端用于组织病理学研究和电子显微镜检查。观察到延迟的炎症反应,并且派尔氏淋巴结中中性粒细胞的涌入是 1 周时观察到的唯一异常。感染后第2周至第5周出现严重炎症反应,感染后6周观察到肠绒毛坏死。这些结果表明,M. 正常肠道的侵袭和感染。 avium 会导致严重的炎症反应,导致肠粘膜节段性坏死。
Mycobacterium aviumis an intracellular pathogen that is associated with disseminated infection in acquired immunodeficiency syndrome (AIDS). Patients with AIDS appear to acquireM. aviummainly through the gastrointestinal tract. Previous studies have shown that healthy mice givenM. aviumorally develop disseminated infection after 2-4 weeks. The chief site ofM. aviuminvasion of the intestinal mucosa is the terminal ileum. To learn more about the pathophysiology ofM. aviuminfection of the intestinal mucosa, C57BL/6 bg+ bg+ mice were infected orally withM. aviumstrain 101 and groups of six mice were killed each week for 8 weeks. The terminal ileum was then prepared for histopathological studies and electron microscopy. A delayed inflammatory response was observed and influx of neutrophils in the Peyer's patches was the only abnormality seen at 1 week. A severe inflammatory response was seen from week 2 to week 5 and necrosis of intestinal villi was observed 6 weeks after infection. These results indicate that invasion and infection of the normal intestine byM. aviumresults in a severe inflammatory response with segmental necrosis of the intestinal mucosa.
鸟分枝杆菌、耻垢分枝杆菌和结核分枝杆菌侵入 HEp-2 上皮细胞并在其中复制的能力的比较。
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