The antioxidant mechanisms underlying the aged garlic extract- and S-allylcysteine-induced protection.

The antioxidant mechanisms underlying the aged garlic extract- and S-allylcysteine-induced protection.
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DOI:
10.1155/2012/907162
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发表时间:
2012
影响因子:
--
通讯作者:
Maldonado PD
Maldonado PD
中科院分区:
生物学2区
文献类型:
--
作者:
Colín-González AL;Santana RA;Silva-Islas CA;Chánez-Cárdenas ME;Santamaría A;Maldonado PD

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陈蒜提取物 (AGE) 是一种无味大蒜制剂,含有 S-烯丙基半胱氨酸 (SAC) 作为其最丰富的化合物。大量研究已经证明了 AGE 和 SAC 在体内(与氧化应激相关的多种实验动物模型)和体外条件下(使用多种方法清除活性氧或诱导氧化损伤)的抗氧化活性。从这些实验得出,AGE 和 SAC 的保护作用与预防或改善氧化应激有关。在这项工作中,我们回顾了参与 AGE 和 SAC 保护作用的不同抗氧化机制(清除自由基和促氧化剂物质、诱导抗氧化酶、激活 Nrf2 因子、抑制促氧化剂酶和螯合作用),从而强调了它们作为治疗药物的潜在用途。此外,我们还强调了 SAC 激活 Nrf2 因子(细胞氧化还原状态的主要调节因子)的能力。在这里,我们纳入了显示 SAC 激活大脑皮层 Nrf2 因子能力的原始数据。因此,我们得出结论,这些分子的治疗特性包括不同水平的细胞和分子机制。
Aged garlic extract (AGE) is an odorless garlic preparation containing S-allylcysteine (SAC) as its most abundant compound. A large number of studies have demonstrated the antioxidant activity of AGE and SAC in both in vivo—in diverse experimental animal models associated to oxidative stress—and in vitro conditions—using several methods to scavenge reactive oxygen species or to induce oxidative damage. Derived from these experiments, the protective effects of AGE and SAC have been associated with the prevention or amelioration of oxidative stress. In this work, we reviewed different antioxidant mechanisms (scavenging of free radicals and prooxidant species, induction of antioxidant enzymes, activation of Nrf2 factor, inhibition of prooxidant enzymes, and chelating effects) involved in the protective actions of AGE and SAC, thereby emphasizing their potential use as therapeutic agents. In addition, we highlight the ability of SAC to activate Nrf2 factor—a master regulator of the cellular redox state. Here, we include original data showing the ability of SAC to activate Nrf2 factor in cerebral cortex. Therefore, we conclude that the therapeutic properties of these molecules comprise cellular and molecular mechanisms at different levels.
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