维生素C通过PGC-1α/Nrf-2/TFAM通路改善二酸盐诱导的氧化应激和线粒体功能障碍
Sabiha Fatima1, Reem H Alrashoudi1, Sana S Alqarni1
1Department of Clinical Laboratory Science, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
Journal of biochemical and molecular toxicology
|December 23, 2024
概括
维生素C通过保持碳水化合物代谢和线粒体功能来保护二酸盐 (K2Cr2O7) 诱导的损伤. 这通过PGC-1α/Nrf-2/TFAM通路实现,减少氧化应激并增强细胞健康.
科学领域:
- 生物化学 生物化学
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 二酸盐 (K2Cr2O7) 暴露会导致人类和动物显著的毒性.
- 损伤涉及改变碳水化合物代谢和线粒体功能障碍.
- 了解对K2Cr2O7诱导的毒性的保护机制至关重要.
研究的目的:
- 为了研究维生素C对K2Cr2O7诱导的毒性的保护作用.
- 阐明维生素C对碳水化合物代谢和组织中线粒体功能的影响.
- 探索维生素C的保护作用背后的分子机制.
主要方法:
- 雄性Wistar大鼠被分为四组:对照组,单独使用维生素C,单独使用K2Cr2O7,维生素C之后使用K2Cr2O7.
- 进行了生物化学测试,以评估功能,酶活性,氧化应激标志物和抗氧化剂状态.
- 线粒体功能通过测量三碳酸 (TCA) 循环酶,电子运输链蛋白质,线粒体DNA (mtDNA) 拷贝数和ATP含量来评估.
- 西方涂抹被用来确定PGC-1α,Nrf-2和TFAM的蛋白质表达.
主要成果:
- 维生素C的使用显著减轻了K2Cr2O7诱导的毒性,恢复了正常的功能和组织学.
- 维生素C保留了糖分和葡萄糖生成酶的活性,并防止了K2Cr2O7诱导的线粒体功能障碍.
- 维生素C降低了氧化应激,增强了抗氧化酶活性,并上调了PGC-1α/Nrf-2/TFAM通路.
结论:
- 维生素C对K2Cr2O7诱导的毒性具有显著的保护作用.
- 保护机制包括保护碳水化合物代谢和减轻线粒体功能障碍.
- 提高PGC-1α/Nrf-2/TFAM通路的调节是维生素C脏保护作用的关键分子机制.
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