参麦注射液对大鼠脑出血后迟发性神经细胞损伤的保护作用

目的:观察参麦注射液对大鼠脑出血后迟发性神经细胞损伤的保护作用。方法:采用Rosenberg法复制大鼠脑出血模型,观察脑出血后大鼠海马CA1区神经细胞病理形态结构、神经细胞线粒体DNA缺失、C-myc基因、PDGFA基因表达及参麦注射液的防治作用。结果:参麦注射液减少大鼠脑出血后海马CA₁区锥体细胞凋亡数目,抑制血肿周围脑组织线粒体DNA片段缺失,参麦注射液对出血早期C-mycmRNA的表达无明显影响,但可使PDGFAmRNA表达明显下调并时限延长。结论:参麦注射液可能通过调节PDGF表达对脑出血后迟发性神经细胞损伤修复有保护作用。

Protective effects of Shenmai injection on the delayed injury of the cerebral neurons in rat induced by intracerebral hemorrhage

Objective: To observe protective effects of Shenmai (SM)injection on the delayed injury of the cerebral neurons in rat with intracerebral hemorrhage. Method: Rosenberg models of intracerebral hemorrhage was established and the effects of SM injection on the pathologic changes in neuronal structure, mitochondria-DNA(mtDNA)deletion, C-myc gene and expression PDGF-A gene in hippocampal CA₁ areas, were investigated. Result: SM injection inhibited the apoptosis of pyramidal cells in the hippocampal CA₁ areas, and decreased the degree of mtDNA deletion in the neurons in the injured area. SM injection had no effect on gene expression of C-myc at initial stage a intracerebral hemorrhage, but significantiy decreased the level of PDGF-A mRNA and prolonged the time of its expression. Conclusion: SM injection might attenuate the delayed injury induced by intracerebral hemorrhage via regulating the expression of PDGF.