Cerebral vessels express interleukin 1β after focal cerebral ischemia

被引:106
作者
Zhang, ZG
Chopp, M
Goussev, A
Powers, C
机构
[1] Henry Ford Hlth Sci Ctr, Dept Neurol, Detroit, MI 48202 USA
[2] Oakland Univ, Dept Phys, Rochester, MI 48309 USA
关键词
IL-1; beta; cerebral ischemia; mouse; embolic stroke;
D O I
10.1016/S0006-8993(97)01317-6
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Rapid and marked increased levels of expression of interleukin 1 beta (IL-1 beta) mRNA have been detected in animal models of cerebral ischemia. However, the protein production of IL-1 beta and the cellular sources of IL-1 beta ate largely undefined after cerebral ischemia. In the present study, we have measured the cellular localization of IL-1 beta protein in brain tissue from non-ischemic and ischemic mice using immunohistochemistry. Male C57B/6J (n = 45) mice were subjected to middle cerebral artery (MCA) occlusion by a clot or a suture. The mice were sacrificed at time points spanning the period from 15 min to 24 h after onset of the MCA occlusion. Non-operated and sham-operated mice were used as control groups. A monoclonal anti-IL-1 beta antibody was used to detect IL-1 beta. In the non-operated and sham-operated mice, a few IL-1 beta immunoreactive cells were detected scattered throughout both hemispheres. IL-1 beta immunoreactive cells increased in the ischemic lesion as early as 15 min and peaked at 1 h to 2 h after MCA occlusion, IL-1 beta immunoreactivity was detected in the cortex of the contralateral hemisphere 1 h after ischemia. By 24 h after onset of ischemia, IL-1 beta immunoreactivity was mainly present adjacent to the ischemic lesion and in the non-ischemic cortex. IL-1 beta immunoreactivity was found on endothelial cells and microglia. This study demonstrates an early bilateral expression of IL-1 beta on endothelium after MCA occlusion in mice. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:210 / 217
页数:8
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