期刊
NEUROREPORT
卷 12, 期 18, 页码 4023-4028出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00001756-200112210-00034
关键词
cerebral ischemia; endoplasmic reticulum; rat; stroke
The endoplasmic reticulum (ER) is thought to play important roles in various neurological diseases via multifactorial and complex mechanisms. The IreI-mediated signal is part of one ER signaling pathways; the signal induces the expression of an ER-resident protein, Bip/GRP78, and is thought to be involved in cell death under ER stress. In this study, we examined time-dependent Bip expression after transient middle cerebral artery occlusion and characterized the Bip-positive cells. IreI-mediated molecules, Bip, were rapidly up-regulated in the ischemic area after 3.5 h recirculation. Their immunoreactivity continued to increase until 24-48h. Immunofluorescence staining revealed Bip up-regulation in ischemic neurons, which were TUNEL positive. Our studies suggest that the IreI-mediated signal might be associated with ischemic neuronal damage. NeuroReport 12:4023-4028 (C) 2001 Lippincott Williams & Wilkins.
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