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Updated: Jun 5, 2025
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Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea
Published on: May 10, 2019
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Canonical MAPK signaling in auditory neuropathy
Yueying Wang1, Lusha Huang1, Xiaoqing Cen1
1Otorhinolaryngology Hospital, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China; Institute of Otorhinolaryngology, Sun Yat-sen University, Guangzhou 510080, China.
Biochimica Et Biophysica Acta. Molecular Basis of Disease
|December 11, 2024
Summary
Auditory neuropathy (AN) involves damage to inner ear structures. Mitogen-activated protein kinase (MAPK) pathway alterations are implicated in AN pathogenesis, suggesting potential therapeutic targets.
Area of Science:
- Neuroscience
- Otolaryngology
- Molecular Biology
Background:
- Auditory neuropathy (AN) is a hearing disorder affecting inner hair cells (IHCs), synapses, and spiral ganglion neurons (SGNs).
- Current understanding of AN's pathogenic mechanisms is limited, hindering targeted therapy development.
- Mitogen-activated protein kinase (MAPK) signaling pathways are crucial in cellular processes and may contribute to AN.
Purpose of the Study:
- To investigate the role of MAPK signaling in the pathogenesis of auditory neuropathy.
- To explore MAPK alterations at different lesion sites within the auditory system in AN.
- To identify potential therapeutic targets for AN based on MAPK pathway modulation.
Main Methods:
- Review of existing literature on the molecular basis of AN.
- Analysis of MAPK pathway involvement (ERK, p38, JNK) in IHCs, ribbon synapses, and SGNs.
- Correlation of specific MAPK alterations with AN characteristics.
Main Results:
- Extracellular signal-regulated kinase (ERK)/MAPK alterations were observed in IHCs and SGNs.
- p38 and c-Jun NH2-terminal kinase (JNK) modulations were identified in ribbon synapses and SGNs.
- Specific MAPK pathway dysregulations are linked to different pathological sites in AN.
Conclusions:
- MAPK pathway alterations play a significant role in the pathogenesis and progression of auditory neuropathy.
- Targeting MAPK signaling pathways presents a promising therapeutic strategy for AN.
- Further research into MAPK mechanisms can guide the development of novel AN treatments.
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