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Effects of fibrillar Aβ42 on expressions of GSK-3β and PP2A Cα
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF NEUROMEDICINE
- Issue:
- 4
- DOI:
- 10.3760/cma.j.issn.1671-8925.2004.04.003
- Key Word:
- β-淀粉样肽;糖原合成酶激酶-3β;蛋白磷酸酯酶2A;tau蛋白;过度磷酸化
Abstract： 目的探讨纤丝状Aβ42对GSK-3β和PP2A Cα表达的影响.方法应用立体定向技术对15月龄雄性SD大鼠进行海马内注射纤丝状Aβ42或双蒸水,采用免疫组织化学染色方法,观察海马神经元GSK-3β和PP2A Cα的表达改变,并进行图像分析.结果Aβ42组海马神经元GSK-3β的表达明显高于双蒸水组,但两组的海马神经元PP2ACα的表达没有明显差异.结论纤丝状Aβ42能使海马神经元GSK-3β表达上调,而对PP2A Cα的表达没有明显影响,提示纤丝状Aβ42诱导tau蛋白过度磷酸化可能与GSK-3β表达上调有关.
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