Study design: Animal model of compressive spinal cord injury (SCI), reverse transcriptionpolymerase chain reaction (RT-PCR), in situ hybridization (ISH), immunohistochemistry (IHC) and enzymehistochemistry (EHC) were used to test the hypothesis that hypoxia-inducible factor-1a (HIF-1a) and the target genes activated by HIF-1a are involved in cell hypoxia tolerance and tissue vascularity to help injured tissue to go through the stress disease.
Objective:To determine whether HIF-1a and its target genes associated with hypoxia tolerance and neovascularization take part in the pathophysiological procedure of SCI in rats. Setting: Yunnan University, China.
Methods:Random-bred adult male Sprague-Dawley (SD) rats weighing 250750 g were prepared for compressive SCI models. After receiving compressive injury at T 10 , rats were sacrificed at different times from 6 h to 1 week after injury. The injured cords were removed, and HIF-1a and its target genes were assayed by RT-PCR, ISH, IHC and EHC. The data were statistically analyzed.
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