透過您的圖書館登入
IP:52.14.130.13
  • 期刊

牛膝改善大鼠學習記憶障礙之研究

The Study of Achyranthes Bidentata on Learning and Memory Impairment in Rats

摘要


背景:阿茲海默症主要臨床症狀為記憶能力喪失,其病理特徵為老年斑,而老年斑主因類澱粉樣蛋白(amyloid β-peptide)沉積所致,基於此理論本實驗設計應用amyloid β peptide(Aβ_(1-40))來誘發阿茲海默症學習障礙之動物模型,並以水迷宮來評估中藥牛膝改善學習記憶障礙的作用。材料&方法:本計畫以80% 乙醇及水進行藥材萃取及分離,分別提取純化而製得懷牛膝皂苷提取物(ABS)及懷牛膝多醣體提取物(ABP);後進行對Aβ_(1-40)誘導大鼠記憶障礙改善作用之評估。結果:Aβ_(1-40)可造成大鼠於水迷宮之操作障礙暨短期記憶與參考記憶之障礙。ABS於50 mg/kg可改善Aβ_(1-40)側腦室輸注所導致水迷宮空間操作暨參考記憶能力之障礙;而ABP於100 mg/kg也能改善Aβ_(1-40)側腦室輸注所導致水迷宮空間操作暨參考記憶能力之障礙。結論:懷牛膝之成分ABS及ABP能改善Aβ_(1-40)誘導大鼠水迷宮學習記憶障礙,可供中醫藥臨床基礎研究參考。

並列摘要


Purpose: Alzheimer's disease (AD) is characterized by neuropathological hallmarks such as senileplaque and neurofibrillary tangles caused by the amyloid β peptide (Aβ_(1-40)). For this reason, we demonstratedthe role of the improve effect of Achyranthesbidentata against continuous intracisternal injection of Aβ_(1-40) in rats. Materials & Methods: This present result obtained total saponins and total polysaccharides extracted from Actyranthes bidentate (ABS and ABP) by 80% ethanol and distilled water. We further investigated the effects of ABS and ABP on the memory function caused by Aβ_(1-40) in rats. Intracisternal injection of Aβ_(1-40) caused the dysfunction of memory function on water maze. Results: Pretreatment with ABS at a dosage of 50 mg/kg or ABP at 100 mg/ kg reversed the dysfunction of memory function on water maze caused by intracisternal injection of Aβ_(1-40). Conclusions: ABS and ABP can improve the learning and memory impairment of rat water maze induced by Aβ_(1-40), which can be used as a reference for clinical basic research of traditional Chinese medicine.

參考文獻


趙中振(2006)。當代藥用植物典
袁秀榮、常章富(2002)。懷牛膝、川牛膝本草考證。中國中藥雜誌。27(7),545。
陳紅、劉友平(2001)。川牛膝多糖抗腫瘤作用初探。成都中醫藥大學學報。24(1),49-50。
馬愛蓮、郭煥(1998)。懷牛膝抗衰老作用研究。中藥材。21(7),360-362。
Lin, Y.C.(2003).The ameliorating effects of cognition-enhancing Chinese herbs on scopolamine- and MK-801-induced amnesia in rats.Am J Chin Med.31(4),543-9.

延伸閱讀