Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Experimental Medicine Research Center, TUMS, Tehran, Iran.
Eur J Pharmacol. 2021 May 5;898:173974. doi: 10.1016/j.ejphar.2021.173974. Epub 2021 Feb 27.
Negative psychological and physiological consequences of neurodegenerative disorders represent a high social and health cost. Among the neurodegenerative disorders Alzheimer's disease (AD) is recognized as a leading neurodegenerative condition and a primary cause of dementia in the elderlys. AD is considered as neurodegenerative disorder that progressively impairs cognitive function and memory. According to current epidemiological data, about 50 milLion people worldwide are suffering from AD. The primary symptoms of AD are almost inappreciable and usually comprise forgetfulness of recent events. Numerous processes are involved in the development of AD, for example oxidative stress (OS) mainly due to mitochondrial dysfunction, intracellular the accumulation of hyperphosphorylated tau (τ) proteins in the form of neurofibrillary tangles, excessive the accumulation of extracellular plaques of beta-amyloid (Aβ), genetic and environmental factors. Running treatments only attenuate symptoms and temporarily reduce the rate of cognitive progression associated with AD. This means that most treatments focus only on controlLing symptoms, particularly in the initial stages of the disease. In the past, the first choice of treatment was based on natural ingredients. In this sense, diverse natural products (NPs) are capable to decrease the symptoms and alleviate the development of several diseases including AD attracting the attention of the scientific community and the pharmaceutical industry. Specifically, numerous NPs including flavonoids, gingerols, tannins, anthocyanins, triterpenes and alkaloids have been shown anti-inflammatory, antioxidant, anti-amyloidogenic, and anti-choLinesterase properties. This review provide a summary of the pathogenesis and the therapeutic goals of AD. It also discusses the available data on various plants and isolated natural compounds used to prevent and diminish the symptoms of AD.
神经退行性疾病的负面心理和生理后果是一个巨大的社会和健康成本。在神经退行性疾病中,阿尔茨海默病(AD)被认为是一种主要的神经退行性疾病,也是老年人痴呆的主要原因。AD 被认为是一种逐渐损害认知功能和记忆的神经退行性疾病。根据目前的流行病学数据,全球约有 5000 万人患有 AD。AD 的主要症状几乎难以察觉,通常包括对近期事件的健忘。AD 的发展涉及许多过程,例如氧化应激(OS)主要是由于线粒体功能障碍,细胞内过度磷酸化 tau(τ)蛋白的积累形成神经原纤维缠结,细胞外β-淀粉样蛋白(Aβ)斑块的过度积累,遗传和环境因素。目前的治疗方法只能缓解症状,并暂时减缓与 AD 相关的认知进展速度。这意味着大多数治疗方法仅关注控制症状,特别是在疾病的早期阶段。过去,治疗的首选是基于天然成分。在这方面,各种天然产物(NPs)能够减轻症状并缓解多种疾病的发展,包括 AD,这引起了科学界和制药行业的关注。具体来说,许多 NPs,包括类黄酮、姜辣素、单宁、花青素、三萜和生物碱,已被证明具有抗炎、抗氧化、抗淀粉样变性和抗胆碱酯酶特性。本文综述了 AD 的发病机制和治疗目标。还讨论了各种植物和分离的天然化合物用于预防和减轻 AD 症状的现有数据。