TIMP-3 and MMP-3 contribute to delayed inflammation and hippocampal neuronal death following global ischemia
نویسندگان
چکیده
منابع مشابه
Hyperoxic reperfusion after global cerebral ischemia promotes inflammation and long-term hippocampal neuronal death.
In this study we tested the hypothesis that long-term neuropathological outcome is worsened by hyperoxic compared to normoxic reperfusion in a rat global cerebral ischemia model. Adult male rats were anesthetized and subjected to bilateral carotid arterial occlusion plus bleeding hypotension for 10 min. The rats were randomized to one of four protocols: ischemia/normoxia (21% oxygen for 1 h), i...
متن کاملInvolvement of MMPs in delayed neuronal death after global ischemia.
Spatial and temporal relations between metalloproteinase (MMP-2 and MMP-9) activation and laminin degradation in gerbil hippocampus after transient cerebral ischemia has been studied. Activity of MMPs was determined by gelatin zymography in homogenates from dorsal (DP, an equivalent of CA1 sector) and abdominal (AbP, containing CA2-4 and gyrus dentatus) parts of hippocampus. A significant activ...
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The inducible isoform of the enzyme cyclooxygenase-2 (COX2) is an immediate early gene induced by synaptic activity in the brain. COX2 activity is an important mediator of inflammation, but it is not known whether COX2 activity is pathogenic in brain. To study the role of COX2 activity in ischemic injury in brain, expression of COX2 mRNA and protein and the effect of treatment with a COX2 inhib...
متن کاملDelayed neuronal recovery and neuronal death in rat hippocampus following severe cerebral ischemia: possible relationship to abnormalities in neuronal processes.
Mechanisms involved in the postischemic delay in neuronal recovery or death in rat hippocampus were evaluated by light and electron microscopy at 3, 15, 30, and 120 min and 24, 36, 48, and 72 h following severe cerebral ischemia that was produced by permanent occlusion of the vertebral arteries and 30-min occlusion of the common carotid arteries. During the early postischemic period, neurons in...
متن کاملMild hypothermia reduces expression of Fas/FasL and MMP-3 after cerebral ischemia-reperfusion in rats
Objective(s):To investigate the effects of local mild hypothermia on the expression of Fas, FasL and MMP-3 after cerebral ischemia-reperfusion in rats. Materials and Methods:Male Wistar rats were divided into sham-operated group (Sham), normothermia group (NT), and hypothermia group (HT). MCAO/R model was established by Longa’s method, and reperfusion was allowed after 2 hr occlusion. Mild hypo...
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ژورنال
عنوان ژورنال: Experimental Neurology
سال: 2009
ISSN: 0014-4886
DOI: 10.1016/j.expneurol.2008.11.022