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Updated: Apr 28, 2026
07:13
Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage
Published on: February 10, 2023
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Hair cell loss - cause or consequence of hearing loss?
Maurizio Cortada1,2, Soledad Levano1, Daniel Bodmer1,2
1Department of Biomedicine, University of Basel, Basel, Switzerland.
Frontiers in Cell and Developmental Biology
|April 27, 2026
Summary
Hair cell loss is often a consequence, not the cause, of hearing loss. Understanding this sequence is crucial for developing effective hearing loss interventions and preserving auditory function.
Area of Science:
- Otolaryngology
- Neuroscience
- Genetics
Background:
- Hair cell loss is traditionally viewed as the primary driver of hearing loss.
- Synaptic and stereocilia damage often precedes hair cell loss, indicating an earlier event in hearing impairment.
Purpose of the Study:
- To review existing literature on the sequence of events leading to hearing loss.
- To challenge the conventional view by highlighting that hair cell loss may be secondary to initial hearing dysfunction.
Main Methods:
- Comprehensive literature review of studies investigating the etiology of hearing loss.
- Analysis of the temporal relationship between functional hearing deficits and hair cell integrity.
Main Results:
- Evidence suggests that hearing loss can occur independently of, and prior to, hair cell loss.
- Morphological and functional defects in hair cells are observed upon initial hearing loss, even when cells are present.
Conclusions:
- Hair cell loss is frequently a secondary consequence rather than the primary cause of hearing loss.
- Revising the understanding of hearing loss pathogenesis is essential for timely and effective therapeutic interventions.
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