【摘要】 目的探讨囊泡单胺转运体(VMAT2)在人胚胎脑组织中的分布特征及其与帕金森病(PD)的关系。方法分别收集不同胎龄自然流产的新鲜胎儿脑组织,应用免疫组织化学方法和Western blot观察VMAT2和酪胺酸羟化酶(TH)在胎脑黑质致密部、腹侧被盖部和蓝斑分布的变化。结果免疫组织化学及Western blot显示,VMAT2在胎脑黑质致密部中的分布既少于腹侧被盖也少与蓝斑(均P<0.05)。结论胎脑VMAT2在黑质致密部中的分布少于腹侧被盖和蓝斑,黑质致密部保护作用薄弱可能是PD黑质多巴胺能神经元选择性受损的重要原因之一。更多还原

【Abstract】 Objective To investigate the feature of distribution of vesicular monoamine transporter(VMAT2) in human embryonic brains and their relationships with Parkinson disease.Methods The distribution of VMAT2 and tyrosine hydroxylase (TH) in substantia nigra pars compacta(SNC), ventral tegmental ares(VTA) and locus coeruleus(LC) were examined by immunohistochemical staining and Western blot in human spontaneous abortion embryonic brains of different gestational age.Results The distribution of VMAT2 in SNc was less than that in both VTA and LC(all P<0.05). Conclusion The amount of VMAT2 that has protective effect on the dopamine(DA) neurons in SNC is less than that in both VTA and LC.The week of the protecting function of VMAT2 in SNC may be one of the important cause of the selective DA neurons lose.更多还原