Lakhan Ram, Sharma Manoj, Batra Kavita, Beatty Frazier B
Department of Health and Human Performance, Berea College, Berea, KY 40404, USA.
Department of Social & Behavioral Health, School of Public Health, University of Nevada, Las Vegas, NV 89119, USA.
Healthcare (Basel). 2021 Nov 18;9(11):1573. doi: 10.3390/healthcare9111573.
With the aging population, dementia emerges as a public health concern. In 2012, the Health and Retirement Study found that 8.8% of adults over 65 years suffered from dementia. The etiopathogenesis and treatment of dementia are not well understood. Antioxidant properties of Vitamin E and its major elements tocopherols and tocotrienols have been reported to be effective in slowing down the progression of dementia from its initial stage of Mild cognitive impairment (MCI). Therefore, the current review aims to explore the role of vitamin E on MCI. A literature search using the key words "Vitamin E, tocopherols, tocotrienols, and mild cognitive impairment" was conducted in MEDLINE (PubMed), CINAHL, and Google Scholar. The inclusion criteria were: (1) articles published in the past ten years; (2) published in English language; (3) published in peer-reviewed journals; and (4) descriptive and epidemiological or evaluation studies. Articles published prior to 2010, focused on other forms of dementia than MCI, grey literature and non-peer-reviewed articles were excluded. A total of 22 studies were included in the narrative synthesis. The results were equivocal. Eleven studies showed some level of the neuroprotective effect of Vitamin E, tocopherols and tocotrienols on the progression of MCI. The mixed results of this review suggest further exploration of the possible protective effects of Vitamin E on the development of dementia. Future studies can be conducted to decipher antioxidant properties of vitamin E and its association with slowing down the cognitive decline.
随着人口老龄化,痴呆症已成为一个公共卫生问题。2012年,健康与退休研究发现,65岁以上的成年人中有8.8%患有痴呆症。痴呆症的病因发病机制和治疗方法尚未完全明确。据报道,维生素E及其主要成分生育酚和生育三烯酚的抗氧化特性可有效减缓痴呆症从轻度认知障碍(MCI)初始阶段的进展。因此,本综述旨在探讨维生素E在MCI中的作用。在MEDLINE(PubMed)、CINAHL和谷歌学术上使用关键词“维生素E、生育酚、生育三烯酚和轻度认知障碍”进行了文献检索。纳入标准为:(1)过去十年发表的文章;(2)以英文发表;(3)发表在同行评审期刊上;(4)描述性、流行病学或评估研究。排除2010年之前发表的、关注除MCI以外其他形式痴呆症的文章、灰色文献和非同行评审文章。共有22项研究纳入叙述性综合分析。结果并不明确。11项研究表明,维生素E、生育酚和生育三烯酚对MCI进展具有一定程度的神经保护作用。本综述的混合结果表明,需要进一步探索维生素E对痴呆症发展可能的保护作用。未来的研究可以开展以解读维生素E的抗氧化特性及其与减缓认知衰退的关联。