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脂管学分析确定β-氧化是噪音引起的听力损失的一个关键过程

Gunseli Wallace, Lingchao Ji, Luis R Cassinotti

bioRxiv : the preprint server for biology

|April 8, 2025

概括

暴露于噪音会改变内耳的新陈代谢,增加脂肪酸的氧化. 用Etomoxir阻断这种通路可以防止噪音引起的听力损失.

科学领域:

耳神经病学耳神经病学
代谢学代谢学代谢学
生物化学生物化学

背景情况:

噪音引起的听力损失 (NIHL) 是一个重要的全球健康问题,特别影响年轻人.
NIHL和有效的药理疗法背后的分子机制在很大程度上是未知的.
目前对噪音暴露期间的耳能量代谢的理解有限.

研究的目的:

为了研究暴露于噪音后内耳的代谢变化.
探索脂肪酸氧化在NIHL中的作用.
评估耳能量代谢针对NIHL预防的潜力.

主要方法:

利用向性和非向性脂管学来分析噪音暴露后内耳代谢概况.
服用β-氧化抑制剂Etomoxir,以评估其对听力和耳代谢的影响.
在对照组和治疗组中,强烈噪音暴露后的量化听力损失.

主要成果:

噪音暴露显著改变了内耳中的脂肪酸和甲酸物种,表明β-氧化增加.
使用Etomoxir抑制β-氧化在正常情况下不会损害听力.
埃托莫克西尔治疗显著降低了强烈噪音暴露后听力损失的程度.

结论:

暴露于噪音会触发尾中的特定代谢变化,特别是增强β-氧化.
调节耳能量代谢,特别是通过抑制β-氧化,为NIHL提供了潜在的治疗策略.
这些发现为NIHL的代谢基础提供了新的见解,并建议新的治疗途径.

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