Nrf2 the rescue: effects of the antioxidative/electrophilic response on the liver.

Nrf2 the rescue: effects of the antioxidative/electrophilic response on the liver.
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DOI:
10.1016/j.taap.2010.01.013
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发表时间:
2010-04-01
影响因子:
3.8
通讯作者:
Reisman SA
Reisman SA
中科院分区:
医学3区
文献类型:
--
作者:
Klaassen CD;Reisman SA

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核因子红细胞2相关因子2(Nrf 2)是一种转录因子,其正调节大量细胞保护基因的基础和诱导表达。这些基因产物包括催化还原反应(NAD(P)H:醌氧化还原酶1,Nqo 1)、结合反应(谷胱甘肽-S-转移酶,Gst和UDP-葡萄糖醛酸转移酶,Ugts)以及潜在毒性外源性物质和外源性结合物(多药耐药相关蛋白,Mrps)外排的蛋白质。已经确定了Nrf 2在肝脏中的意义,因为Nrf 2缺失小鼠的肝脏比野生型小鼠更容易受到各种氧化/亲电应激诱导的病理学的影响。相反,肝脏Nrf 2激活的药理学和遗传学模型均对氧化/亲电应激具有保护作用。此外,由于肝脏中的某些Nrf 2靶基因可以影响异生物质的分布、代谢和排泄,因此还应考虑Nrf 2对药物和其他异生物质的动力学的影响,特别强调代谢和排泄。因此,本文综述了有助于理解Nrf 2在毒理学和毒理学中的重要性的研究,特别是与肝脏有关的研究。
Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor that positively regulates the basal and inducible expression of a large battery of cytoprotective genes. These gene products include proteins that catalyze reduction reactions (NAD(P)H:quinone oxidoreductase 1, Nqo1), conjugation reactions (glutathione-S-transferases, Gsts and UDP-glucuronosyltransferases, Ugts), as well as the efflux of potentially toxic xenobiotics and xenobiotic conjugates (multidrug resistance-associated proteins, Mrps). The significance of Nrf2 in the liver has been established, as livers of Nrf2-null mice are more susceptible to various oxidative/electrophilic stress-induced pathologies than wild-type mice. In contrast, both pharmacological and genetic models of hepatic Nrf2 activation are protective against oxidative/electrophilic stress. Furthermore, because certain Nrf2-target genes in the liver could affect the distribution, metabolism, and excretion of xenobiotics, the effects of Nrf2 on the kinetics of drugs and other xenobiotics should also be considered, with a special emphasis on metabolism and excretion. Therefore, this review highlights the research that has contributed to the understanding of the importance of Nrf2 in toxicodynamics and toxicokinetics, especially that which pertains to the liver.
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