首都医科大学学报 ›› 2008, Vol. 29 ›› Issue (3): 270-273.

• 专题报道 • 上一篇    下一篇

人类黑质神经元衰老性变化的体视学研究

宣琪1,2, 徐胜利1, 周明1, 崔叶青3, 陈彪1   

  1. 1. 首都医科大学宣武医院北京市老年病研究所神经生物学研究室, 教育部神经变性病学重点实验室, 首都医科大学宣武医院病理科;2. 首都医科大学宣武医院北京市老年病研究所神经生物学研究室, 教育部神经变性病学重点实验室;3. 首都医科大学宣武医院普通外科
  • 收稿日期:2008-04-16 修回日期:1900-01-01 出版日期:2008-06-24 发布日期:2008-06-24
  • 通讯作者: 陈彪

Stereological Analysis of Age Associated Neuronal Changes in Human Substantia Nigra

Xuan Qi1,2, Xu Shengli1, Zhou Ming1, Cui Yeqing3, Chen Biao1   

  1. 1. Education Ministry Key Laboratory for Neurodegenerative Disease, Department of Neurobiology, Institute of Geriatrics of Xuanwu Hospital, Capital Medical University;2. Department of Pathology, Xuanwu Hospital, Capital Medical University;3. Department of General Surgery, Xuanwu Hospital, Capital Medical University
  • Received:2008-04-16 Revised:1900-01-01 Online:2008-06-24 Published:2008-06-24

摘要: 目的 探讨人类中脑黑质神经元的增龄性变化规律.方法 选取19例正常人尸检的中脑组织,分为青年组(17~35岁)、中年组(40~59岁)和老年组(60~84岁),取中脑黑质连续冰冻切片,进行焦油紫染色和酪氨酸羟化酶(TG)免疫组化染色,用体视学计数原理及相应分析系统进行计数,观察老化过程中黑质神经元的形态学改变规律.结果 随着年龄增长,人类中脑黑质神经元总数和黑色素性神经元均减少(P<0.05),其中以酪氨酸羟化酶阳性且带有神经黑色素的多巴胺能神经元数量减少较为突出,差异有统计学意义(P<0.05).结论 神经黑色素(NM)可能参与并促进了衰老过程中黑质神经元的退行性变和丢失,这可能是黑质病变的原因之一.

关键词: 黑质, 免疫组织化学, 体视学, 酪氨酸羟化酶

Abstract: Objective To survey the regularities of dopamine neurons in substantia nigra(SN) of middle brain with age increasing and further provide objective evidence for revealing lesion of substantia nigra.Methods Nineteen normal individuals were divided into young(17 to 35 years old),middle-aged(40 to 59 years old),and aged(60 to 84 years old) groups.The age-related changes of neuromelanin(NM) containing and tyrosine hydroxylase(TH) immunoreactive cell number of SN were analyzed.Results Stereological counting based on Nissl stain and TH immunoreactivity revealed that,both Nissl stained and neuromelanin containing neurons decreased in the process of ageing,while the decrease of both TH immunoreactive and NM containing cell number was the most significant changes.Conclusion NM may participate in ageing influenced degeneration and loss of dopaminergic neurons.And that may serve as the foundation of neurodegenerative disease.

Key words: substantia nigra, immunohistochemistry, stereology, tyroxine hydroxylase

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