对耳毛细胞的抗氧化剂比较保护,防止它们受到耳毒素的侵害
Allen F Ryan1,2,3, Kwang Pak1, Eun Jung Lee1,4
1Department of Otolaryngology, University of California San Diego, La Jolla, CA 92093, USA.
Molecules (Basel, Switzerland)
|September 27, 2025
概括
谢拉特罗达斯特和伊德本通过吸收反应性氧物种 (ROS) 来保护耳毛细胞免受诸如珍塔米辛和西斯普拉丁之类的耳毒药所造成的损伤. 它们的保护作用与抗氧化活性有关,而不是其他特性.
科学领域:
- 耳毒性和神经保护研究.
- 听力损失的细胞和分子机制.
- 抗氧化剂和自由基清除活动.
背景情况:
- 耳毛细胞 (HC) 损伤通常涉及反应性氧物种 (ROS).
- 之前的查发现抗抗氧化剂有效性有限,对抗 gentamicin 诱导的 HC 损失.
- 谢拉特罗达斯特和伊德本显示出显著的保护作用,这表明它们的作用超出了ROS清理范围.
研究的目的:
- 为了确定Seratrodast和Idebenone对Gentamicin的保护作用是否是由于它们的ROS清理特性.
- 研究其他TXA2抑制剂和线粒体增强剂的保护潜力.
- 为了评估谢拉特罗达斯特和伊德本对西斯普拉丁诱导的耳毒性的疗效.
主要方法:
- 在体外对抗氧化剂进行查,以保护对抗 gentamicin 诱导的 HC 损伤.
- 在同一试验中测试TXA2抑制剂 (SQ-29548) 和线粒体增强剂 (线粒体酸).
- 对塞拉特罗达斯特和伊德本对西斯普拉丁诱导的HC损伤的保护的评估.
主要成果:
- 无论是SQ-29548还是线粒酸都没有保护HCs免受 gentamicin的影响,这证实了ROS清理是seratrodast和idebenone的关键机制.
- 谢拉特罗达斯特和伊德本提供了对西斯普拉丁诱导的耳毒性保护,尽管效果不如对珍塔米辛的保护.
- 甲基酸和SQ-29548并没有防止西斯胺诱导的HC损伤.
结论:
- 谢拉特罗达斯特和伊德本通过自由基清除保护耳毛细胞免受 جنت米辛和西斯普拉丁的影响.
- 对思丁的保护效率较低,可能是由于其独特的耳毒性机制.
- 这些发现强调了抗氧化物质在减轻药物诱导的听力损失方面的重要性.
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