首页|期刊导航|中国神经再生研究（英文版）|Mild hypothermia effects on matrix metalloproteinase-9 expression in the perihematomal region of rats following experimental intracerebral hemorrhage
中国神经再生研究（英文版）2008，Vol.3Issue(7)：764-767,4.
Mild hypothermia effects on matrix metalloproteinase-9 expression in the perihematomal region of rats following experimental intracerebral hemorrhage
Mild hypothermia effects on matrix metalloproteinase-9 expression in the perihematomal region of rats following experimental intracerebral hemorrhage
摘要
Abstract
BACKGROUND:Matrix metalloproteinase-9(MMP-9)expression increases with intracerebral hemorrhage,and participates in the pathophysiological processes of secondary brain injury after intracerebral hemorrhage.OBJECTIVE:To investigate the effects of mild hypothermia on MMP-9 expression and brain edema in the perihematomal region of experimental intracerebral hemorrhage rats.DESIGN,TIME AND SETTING:The randomized,controlled experiment was performed at the Central Laboratory of Shandong Provincial Hospital between May and September 2007.MATERIALS:Seventy-two,Wistar,male rats,12-weeks old,were used for this study.Rabbit anti-MMP-9 primary antibody was purchased from Boster,China.METHODS:Wistar rats were equally and randomly divided into normothermia and mild hypothermia groups.The two groups each comprised control,6-hour intracerebral hemorrhage,24-hour intracerebral hemorrhage,48-hour intracerebral hemorrhage,72-hour intracerebral hemorrhage,and 1-week intracerebral hemorrhage subgroups,with six rats in each subgroup.Rat models of intracerebral hemorrhage were established by irtjecting 100 μL of autologous blood into the rat caudate nucleus.Rats in the mild hypothermia group received four hours of local mild hypothermia immediately following the injection.Intracerebral temperature was maintained at(33±0.5)℃.Subsequently,intracerebral temperature was spontaneously recovered at 25℃.Rats in the control subgroup were not injected with autologous blood and received only with intracerebral hemorrhage.MAIN OUTCOME MEASURES:Brain water content and MMP-9 expression surrounding the hematoma region.RESULTS:MMP-9 expression increased at 6 hours,and brain edema reached a peak at 48 hours after intracerebral hemorrhage.MMP-9 expression was significantly decreased in the mild hypothermia group compared with the normothermia group at each time point (P<0.05).CONCLUSION:Mild hypothermia can significantly inhibit MMP-9 overexpression and relieve brain edema following intracerebral hemorrhage.关键词
intracerebral hemorrhage/mild hypothermia/brain edema/matrix metalloproteinasesKey words
intracerebral hemorrhage/mild hypothermia/brain edema/matrix metalloproteinases分类
医药卫生引用本文复制引用
Minzhong Wang,Xiaoyan Lin,Xueping Liu,Qingxi Fu,Suming Zhang..Mild hypothermia effects on matrix metalloproteinase-9 expression in the perihematomal region of rats following experimental intracerebral hemorrhage[J].中国神经再生研究（英文版）,2008,3(7):764-767,4.基金项目
the Project of Shandong Provincial Health Department, No.2007HW093 （）
the Project of Shandong Provincial Science and Technology Department,No.003130103 （）
