2013年6月13日 讯 /生物谷BIOON/ –近日,刊登在国际杂志PLoS One上的一篇研究报告中,来自西奈山医学中心的研究者通过研究揭示了,常见的医疗用药或许可以影响阿尔兹海默氏症疾病的开始和发展。
本项研究中,研究者Giulio Maria Pasinetti和其研究团队使用电脑算法对1600种可用要进行了筛选,用于测试其对大脑β-淀粉样蛋白积累的影响,β-淀粉样蛋白是一种积累于阿尔兹海默氏症患者大脑中的一种病变蛋白质。研究者发现,当前用于治疗如高血压、抑郁等疾病的常见药物,要么可以增强或者可以阻断β-淀粉样蛋白的积累,而β-淀粉样蛋白是淀粉质斑块的主要成分。
研究者Pasinetti表示,这项研究会鉴别出一些常见的药物,其中有些可以引发与预防相关的疾病状况,有些则可以逆转阿尔兹海默氏症的发生,这或许也可以给临床医生一些建议,在开药的时候确定一下哪种药物可以影响阿尔兹海默氏症的患病风险。
为了确定筛选步骤,研究者使用小鼠进行研究,这些小鼠都被进行遗传工程化操作形成了与阿尔兹海默氏症相关的淀粉质斑块;使用血压疗法六个月后,小鼠的淀粉质斑块以及神经变性表现明显降低饿了,其中一种药物是卡维地洛,其用于阿尔兹海默氏症治疗中可以缓解记忆力降低。
研究者表示,近些年来,淀粉质斑块是科学家用于研究阿尔兹海默氏症的重点研究对象,然而鉴别出新型的药物疗法抑制β淀粉样蛋白的产生同样可以帮助治疗阿尔兹海默氏症,比如卡维地洛,一种用于治疗高血压的药物,就是阿尔兹海默氏症的潜在靶向药物。
最后研究者表示,如果我们可以改变当前很多药物的不同适应症,比如降血压等,那么当前很多常见的药物对于人们来说都具有潜在的巨大价值。相关研究成果由国立卫生研究院提供资助。(生物谷Bioon.com)
doi:10.1371/journal.pone.0065232
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Unintended Effects of Cardiovascular Drugs on the Pathogenesis of Alzheimer’s Disease
Wang J, Zhao Z, Lin E, Zhao W, Qian X, et al.
Alzheimer’s disease (AD) is rapidly becoming one of the leading causes of disability and mortality in the elderly. As life-expectancy increases, an increasing number of people will rely on modern medicines to treat age-associated disorders. Among these medications, some might benefit, while others might exacerbate, the pathogenesis of AD. We screened 1,600 FDA approved drugs for β-amyloid (Aβ)-modifying activity and identified drugs that can potentially influence amyloid precursor protein processing. In this study, we focused on cardiovascular drugs and demonstrated that some hypertensive medication can differentially modulate Aβ, both in vitro and in vivo. Our study suggests that some commonly prescribed drugs might exert unintended effects and modulate AD and provides the basis for continuing investigation of the role of individual drugs on a case-by-case basis. This line of investigation will lead to the identification of common medications that are potentially beneficial or detrimental to AD as a reference for physicians to consider when prescribing the most appropriate drugs for their patients, particularly for treating chronic disorders among the growing geriatric population.