相关实验视频
Updated: Jan 17, 2026
09:52
Trans-Tympanic Drug Delivery for the Treatment of Ototoxicity
Published on: March 16, 2018
9.9K
奇诺利尼特龙23 保护听觉细胞氧化损伤和噪音引起的听力损失
Silvia Murillo-Cuesta1,2,3, Julio Contreras1,2,4, Mourad Chioua5
1Institute for Biomedical Research "Sols-Morreale", Spanish National Research Council-Autonomous University of Madrid (CSIC-UAM), 28029 Madrid, Spain.
ACS pharmacology & translational science
|September 19, 2025
概括
一种新型化合物,QN23,通过减少耳氧化应激,有效地防止噪音引起的听力损失. 早期的QN23干预使关键基因表达正常化,在小鼠中保持听力.
科学领域:
- 耳鼻神经科学 耳鼻神经科学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 氧化应激是噪音引起的听力损失的主要原因.
- 以前的抗氧化疗法在预防耳损伤方面表现出有限的成功.
- 一种新型的奇诺基衍生物,QN23,在其他氧化应激模型中表现出有希望.
研究的目的:
- 评估QN23对噪音引起的听力损失的耳保护潜力.
- 为了评估QN23的有效性,在耳氧化应激的体外和体内模型中评估QN23.
- 为了研究QN23的保护作用背后的分子机制.
主要方法:
- 在体外测试中,使用暴露于过氧化 (H2O2) 的耳HEI-OC1细胞进行了体外测试.
- 在小鼠体内研究,包括在暴露于噪音之前给系统QN23的研究.
- 听觉值转移测量和分析与氧化应激和炎症相关的耳基因表达.
主要成果:
- QN23没有表现出耳毒性,并增强了HEI-OC1细胞在H2O2诱导的压力下存活的时间,表现优于N-乙-l-氨酸.
- 系统QN23在小鼠中被很好地容忍,并且在暴露于噪音后显著减少了急性听觉值变化.
- QN23治疗使关键耳基因 (如Nrf2,Hmox1,Nlrp3,Tnfa) 的表达正常化,以剂量和时间依赖的方式抵消噪声诱导的分子变化.
结论:
- QN23是一种强大的耳膜保护剂,可以防止噪音引起的听力损失.
- 早期和持续的QN23干预有效地减轻耳氧化损伤和炎症.
- QN23有望开发新的治疗策略来保护听力.
更多相关视频
相关概念视频
00:50Unrenewable Cells
2.9K
In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of...
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of...
2.9K
01:17Oxidation of Phenols to Quinones
4.6K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
4.6K