遗传 ›› 2006, Vol. 28 ›› Issue (5): 525-528.

• 研究报告 • 上一篇    下一篇

Alzheimer病患者APP及PS1基因表达量的研究

张野;钱伊萍;江开达;禹顺英;汪栋祥;张明园;江三多   

  1. 1.上海市精神卫生中心,上海 200030;2. 上海第二医科大学,上海 200025
  • 收稿日期:2005-06-05 修回日期:2005-07-27 出版日期:2006-05-10 发布日期:2006-05-10
  • 通讯作者: 张野

A Study of Expression Levels of APP and PS1 Genes in the Patients with Alzheimer’s Disesase

ZHANG Ye, QIAN Yi-Ping, JIANG Kai-Da, YU Shun-Ying, WANG Dong-Xiang, ZHANG Ming-Yuan, JIANG San-Duo   

  1. 1.Shanghai Mental Health Center, Shanghai 200030 China;2.Shanghai Second Medical University, Shanghai 200025,China
  • Received:2005-06-05 Revised:2005-07-27 Online:2006-05-10 Published:2006-05-10
  • Contact: ZHANG Ye

摘要:


为了检测Alzheimer病(Alzheimer’s disease,AD)患者外周血中淀粉样前体蛋白(Amyloid Precursor Protein, APP)基因及早老素1(Presenilin 1, PS1)基因的表达情况,进而探讨APP及PS1基因的表达与AD的相关性,采用SYBRGreenⅠ的方法对45例AD患者、25例血管性痴呆(vascular dementia, VD)患者及60名正常对照组样本的mRNA进行绝对定量,检测得到APP基因及PS1基因在对照组中的表达水平分别为0.026±0.005 amol/μg cDNA和0.026±0.004 amol/μg cDNA;在AD患者组中的表达量分别为0.044±0.006 amol/μg cDNA和0.051±0.011 amol/μg cDNA;,在VD患者组中的表达水平分别为0.072±0.013 amol/μg cDNA和0.039±0.005 amol/μg cDNA 。经显著性检验,AD患者组APP基因的表达水平上调,t=2.639, P<0.01;PS1基因的表达水平同样呈上调趋势,t=2.173,P<0.05,差异均具有统计学意义。VD患者组APP基因的表达水平上调,t=3.028,P<0.01;PS1基因的表达水平也同样呈上调趋势,t=2.012,P<0.05,均有显著性差异。因此,APP及PS1基因的表达水平的增高并不一定与AD发生特异性关联,而可能与多种导致痴呆的脑部病变发生关联。

关键词: Alzheimer病, APP基因, PS1基因, 表达量, 关联

Abstract: Abstract: To search the association between the expression levels of APP and PS1gene and Alzheimer’s disease(AD), 45 patients with AD、25 patients with VD (vascular dementia,VD) and 60 healthy controls were involved. Real-time quantitative PCR using SYBR Green I dye was performed with ABI PRISM 7900 HT(Applied Biosystems). In healthy controls、AD cases and VD cases, the APP gene expression levels are 0.026±0.005amol/ug cDNA、0.044±0.006amol/ug cDNA and 0.072±0.013 amol/ug cDNA, the PS1 gene expression levels are 0.026±0.004 amol/ug cDNA、0.051±0.011amol/ug cDNA and 0.039±0.005amol/ug cDNA, respectively. Both APP and PS1, the expression levels are all significantly increased rather in AD cases or in VD cases(APP, AD vs Control, t=2.639, P<0.01, VD vs Control, t=3.028,P<0.01; PS1, AD vs Control, t=2.173, P<0.05, VD vs Control, t=2.012,P<0.05). It seems that the enhanced APP and PS1 gene expression have the association with dementia but not especially with AD.

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