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  5. 探討麻黃粗萃物對注意力不足過動症模式大鼠認知行為能力之影響
 
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探討麻黃粗萃物對注意力不足過動症模式大鼠認知行為能力之影響

Other Title
Effects of Ephedra on spatial learning deficits in an animal model of attention deficit hyperactivity disorder (ADHD) – the spontaneously hypertensive rat (SHR)
Type
thesis
Date Issued
2012-06-22
Author(s)
蔡文瑜
Advisor
劉得任
Subjects
系所名稱:生醫材料暨工程研究所
Publisher
生醫材料暨工程研究所
Description
學位別:碩士
語文別:中文
指導教授:劉得任
共同指導教授:
口試委員:侯文琪;黃義侑
中文關鍵字:注意力不足過動症;麻黃;腦源性神經營養因子;莫氏水迷宮;自發性高血壓大鼠
Abstract
注意力不足過動症(Attention deficit hyperactivity disorder, ADHD)主要三大症狀為:注意力缺失(Attention deficits, inattention)、高度活動性(hyperactivity, over-activity)、衝動(impulsivity)。尤其具有ADHD的學齡兒童,其認知上會因此有所缺陷,例如:健忘、記憶與學習。
目前已確定藉由中樞神經興奮劑,例如ADHD臨床治療藥物Methylphenidate hydrochloride(MPH;Ritalin;俗稱利他能),其為安非他命異構物,可促進ADHD患者症狀上的改善。麻黃素為日人長井長義由麻黃(Ephedra sinica)抽出的物質,具有與交感神經興奮劑(Sympathomimetic agents)類似之構造。
自發性高血壓大鼠為其外顯行為特性:高度活動性、衝動、無法克制衝動即無法維持注意力,被視為可當作可與Wistar大鼠當作控制組的ADHD的動物模式。腦衍生神經滋長因子(Brain-derived neurotrophic factor, BDNF)在突觸可塑性扮演重要的角色,並參與記憶與學習的行程過程。
本實驗利用麻黃粗萃物做為介入藥物經管餵方式給與Wistar大鼠及SHR大鼠,藉由莫式水迷宮(Morris Water Maze)評估大鼠在空間記憶學習能力是否有所提升,另外評估實驗動物腦組織海馬迴內BDNF與TrkB相關認知蛋白的生成量。
本實驗結果顯示,給予ADHD動物模式-SHR大鼠類似ADHD臨床藥物MPH的麻黃粗萃物後,不論在行為表現或腦組織認知相關蛋白質皆有顯著提升效果,認為麻黃粗萃物對成為改善ADHD認知行為能力藥物有潛在的發展性。
URI
https://203.71.86.71/handle/123456789/10972

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