Gene expression profiles in the peri-infarct brain cortex in a rat model of stroke-prone renovascular hypertension

作     者：Mei Li Yidong Wang Xiaogeng Shi Jingrui Pan Fen Xie Jianye Fang 

作者机构：Department of Neurology SecondAffiliated Hospital of Sun Yat-sen University Guangzhou 510120 Guangdong Province China Department of Neurology Guangdong Hospital of Traditional Chinese Medicine Guangzhou 510120 Guangdong Province China 

出 版 物：《Neural Regeneration Research》 (中国神经再生研究（英文版）)

年 卷 期：2009年第4卷第11期

页      面：857-861页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 08[工学] 09[农学] 071006[理学-神经生物学] 071007[理学-遗传学] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种] 

基　　金：the Natural Science Foundation of Guangdong Province No. 021838 

主　　题：cerebral infarction renovascular hypertensive rat DNA microarray 

摘      要：BACKGROUND： Previous studies have focused on gene expression acutely following stroke onset. However, there have been a few reports of gene expression during later stages of cerebral infarction. OBJECTIVE： To determine gene expression profiling in the peri-infarct brain cortex 7 days after ischemia in a rat model of cerebral infarction in renovascular hypertensive rats. DESIGN, TIME AND SETTING： An in vivo, molecular experiment was performed at the Experimental Animal Center of Sun Yat-sen University and CapitalBio, Beijing, China between February 2004 and August 2005. MATERIALS： A 70-mer oligo chip containing 5 705 rat genes was supplied by CapitalBio, Beijing, China; and the Oligo rat gene bank was provided by Qiagen, the Netherlands. METHODS： Six Sprague Dawiey rats were utilized to establish a stroke-prone renovascular hypertensive model using the two-kidney and two-clip method. The rats were subsequently randomly assigned to two groups： middle cerebral artery occlusion and sham-operation, with three rats in each group. The middle cerebral artery occlusion model was induced by intraluminal suture method. Incisions were sutured following isolation of carotid arteries in the sham-operation group. MAIN OUTCOME MEASURES： Total RNA was extracted from the peri-infarct cerebral cortex 7 days after surgery. Following fluorescent labeling, RNA was hybridized to an Oligo chip containing 5 705 genes and was then scanned. Images were collected and the differentially expressed genes （number and category） were selected by data analysis. RESULTS： A total of 174 genes were upregulated, and 23 were downregulated, in the peri-infarct cerebral cortex 7 days after ischemia. The upregulated genes were distributed among 12 functional categories, and the downregulated genes belonged to categories of transport, transcription regulators, signals, response to stress, metabolism, and cell adhesion. The expression of some cytoskeletal genes was upregulated, including VIM, A2M, B2M, ACTR3,