Wang Tang-Chuan, Chang Ta-Yuan, Tyler Richard, Lin Ying-Ju, Liang Wen-Miin, Shau Yio-Wha, Lin Wei-Yong, Chen Yi-Wen, Lin Chia-Der, Tsai Ming-Hsui
Department of Public Health, China Medical University, Taichung City 40402, Taiwan.
School of Medicine, China Medical University, Taichung City 40402, Taiwan.
Brain Sci. 2020 Oct 13;10(10):732. doi: 10.3390/brainsci10100732.
Long-term noise exposure often results in noise induced hearing loss (NIHL). Tinnitus, the generation of phantom sounds, can also result from noise exposure, although understanding of its underlying mechanisms are limited. Recent studies, however, are shedding light on the neural processes involved in NIHL and tinnitus, leading to potential new and innovative treatments. This review focuses on the assessment of NIHL, available treatments, and development of new pharmacologic and non-pharmacologic treatments based on recent studies of central auditory plasticity and adaptive changes in hearing. We discuss the mechanisms and maladaptive plasticity of NIHL, neuronal aspects of tinnitus triggers, and mechanisms such as tinnitus-associated neural changes at the cochlear nucleus underlying the generation of tinnitus after noise-induced deafferentation. We include observations from recent studies, including our own studies on associated risks and emerging treatments for tinnitus. Increasing knowledge of neural plasticity and adaptive changes in the central auditory system suggest that NIHL is preventable and transient abnormalities may be reversable, although ongoing research in assessment and early detection of hearing difficulties is still urgently needed. Since no treatment can yet reverse noise-related damage completely, preventative strategies and increased awareness of hearing health are essential.
长期暴露于噪音环境通常会导致噪声性听力损失(NIHL)。耳鸣,即幻听的产生,也可能由噪音暴露引起,尽管对其潜在机制的了解有限。然而,最近的研究正在揭示与噪声性听力损失和耳鸣相关的神经过程,从而带来潜在的新型创新治疗方法。本综述聚焦于噪声性听力损失的评估、现有治疗方法,以及基于近期关于中枢听觉可塑性和听力适应性变化的研究开发新的药物和非药物治疗方法。我们讨论了噪声性听力损失的机制和适应不良的可塑性、耳鸣触发因素的神经元方面,以及诸如噪声性去传入后耳鸣产生所涉及的耳蜗核耳鸣相关神经变化等机制。我们纳入了近期研究的观察结果,包括我们自己关于耳鸣相关风险和新兴治疗方法的研究。对中枢听觉系统神经可塑性和适应性变化的了解不断增加,这表明噪声性听力损失是可预防的,短暂异常可能是可逆的,尽管在听力困难的评估和早期检测方面仍迫切需要持续研究。由于尚无治疗方法能完全逆转与噪音相关的损伤,预防策略和提高听力健康意识至关重要。