Neuroprotective Effect of Antioxidants in the Brain.

Neuroprotective Effect of Antioxidants in the Brain.
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DOI:
10.3390/ijms21197152
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发表时间:
2020-09-28
影响因子:
5.6
通讯作者:
Lee BH
Lee BH
中科院分区:
生物学2区
文献类型:
--
作者:
Lee KH;Cha M;Lee BH

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大脑容易受到过度氧化的伤害,因为它的脂肪含量丰富,能量需求高,抗氧化能力弱。在神经退行性疾病中,通过大脑中的氧化改变,活性氧物种(ROS)增加了神经元损伤和功能缺陷的易感性。过多和异常水平的ROS和/或过多的金属受到细胞防御机制、细胞内信号和大脑中抗氧化剂的生理功能的调节。针对氧化应激、氧化还原金属和神经细胞死亡的单一和/或复合抗氧化剂化合物已在多个临床前和临床试验中作为对抗与神经退行性疾病相关的氧化应激的补充治疗策略进行了评估。在此,我们提出了各种抗氧化剂的一般分析和概述,并提出了可能的抗氧化剂治疗方案,以保护大脑免受氧化损伤的神经保护。这篇综述集中在大脑中的酶和非酶的抗氧化机制,并考察了在评估抗氧化剂化合物用于治疗神经退行性疾病时的相对优势和方法学问题。
The brain is vulnerable to excessive oxidative insults because of its abundant lipid content, high energy requirements, and weak antioxidant capacity. Reactive oxygen species (ROS) increase susceptibility to neuronal damage and functional deficits, via oxidative changes in the brain in neurodegenerative diseases. Overabundance and abnormal levels of ROS and/or overload of metals are regulated by cellular defense mechanisms, intracellular signaling, and physiological functions of antioxidants in the brain. Single and/or complex antioxidant compounds targeting oxidative stress, redox metals, and neuronal cell death have been evaluated in multiple preclinical and clinical trials as a complementary therapeutic strategy for combating oxidative stress associated with neurodegenerative diseases. Herein, we present a general analysis and overview of various antioxidants and suggest potential courses of antioxidant treatments for the neuroprotection of the brain from oxidative injury. This review focuses on enzymatic and non-enzymatic antioxidant mechanisms in the brain and examines the relative advantages and methodological concerns when assessing antioxidant compounds for the treatment of neurodegenerative disorders.
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