首页> 美国卫生研究院文献>International Journal of Molecular Sciences >Antioxidant Properties and PC12 Cell Protective Effects of a Novel Curcumin Analogue (2E6E)-26-Bis(35- dimethoxybenzylidene)cyclohexanone (MCH)
【2h】

Antioxidant Properties and PC12 Cell Protective Effects of a Novel Curcumin Analogue (2E6E)-26-Bis(35- dimethoxybenzylidene)cyclohexanone (MCH)

机译:新型姜黄素类似物(2E6E)-26-双(35-二甲氧基亚苄基)环己酮(MCH)的抗氧化性能和PC12细胞保护作用

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The antioxidative properties of a novel curcumin analogue (2E,6E)-2,6-bis(3,5-dimethoxybenzylidene)cyclohexanone (MCH) were assessed by several in vitro models, including superoxide anion, hydroxyl radical and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and PC12 cell protection from H2O2 damage. MCH displayed superior O2•− quenching abilities compared to curcumin and vitamin C. In vitro stability of MCH was also improved compared with curcumin. Exposure of PC12 cells to 150 μM H2O2 caused a decrease of antioxidant enzyme activities, glutathione (GSH) loss, an increase in malondialdehyde (MDA) level, and leakage of lactate dehydrogenase (LDH), cell apoptosis and reduction in cell viability. Pretreatment of the cells with MCH at 0.63–5.00 μM before H2O2 exposure significantly attenuated those changes in a dose-dependent manner. MCH enhanced cellular expression of transcription factor NF-E2-related factor 2 (Nrf2) at the transcriptional level. Moreover, MCH could mitigate intracellular accumulation of reactive oxygen species (ROS), the loss of mitochondrial membrane potential (MMP), and the increase of cleaved caspase-3 activity induced by H2O2. These results show that MCH protects PC12 cells from H2O2 injury by modulating endogenous antioxidant enzymes, scavenging ROS, activating the Nrf2 cytoprotective pathway and prevention of apoptosis.
机译:新型姜黄素类似物(2E,6E)-2,6-双(3,5-二甲氧基亚苄基)环己酮(MCH)的抗氧化性能通过几种体外模型进行了评估,包括超氧阴离子,羟基自由基和1,1-二苯基-2-吡啶甲基肼基(DPPH)清除自由基并保护PC12细胞免受H2O2损害。与姜黄素和维生素C相比,MCH具有更好的O2 •-淬灭能力。与姜黄素相比,MCH的体外稳定性也得到改善。 PC12细胞暴露于150μMH2O2中会导致抗氧化酶活性降低,谷胱甘肽(GSH)丢失,丙二醛(MDA)水平升高以及乳酸脱氢酶(LDH)泄漏,细胞凋亡和细胞活力降低。在暴露于H2O2之前,用0.63-5.00μM的MCH对细胞进行预处理,以剂量依赖的方式显着减弱了这些变化。 MCH在转录水平上增强了转录因子NF-E2相关因子2(Nrf2)的细胞表达。此外,MCH可以减轻细胞内活性氧(ROS)的积累,线粒体膜电位(MMP)的损失以及H2O2诱导的Caspase-3裂解活性的增加。这些结果表明,MCH通过调节内源性抗氧化酶,清除ROS,激活Nrf2细胞保护途径和防止细胞凋亡,保护PC12细胞免受H2O2损伤。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号