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Peptides for Hearing Loss: Comparison & Mechanisms
Before relying on any peptide for auditory research, understanding how each compound differs mechanistically matters significantly. Thymalin Immune modulation via T-cell rebalancing, reduces inflammatory cytokines (TNF-alpha, IL-1beta) in autoimmune inner ear
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Before relying on any peptide for auditory research, understanding how each compound differs mechanistically matters significantly.
- Thymalin
- Immune modulation via T-cell rebalancing, reduces inflammatory cytokines (TNF-alpha, IL-1beta) in autoimmune inner ear disease
- Autoimmune SSNHL, inflammatory-mediated loss
- Animal models + limited human case series
- Most relevant for immune-driven acute loss; narrow application but well-documented in that context
- BPC-157
- VEGF upregulation, angiogenesis, tissue repair, promotes endothelial migration and capillary density
- Age-related presbycusis (vascular), noise trauma (tissue repair)
- Strong animal data, no human hearing trials
- Biological plausibility is high for vascular-mediated loss; lack of clinical validation is the limitation
- Cerebrolysin
- Neurotrophic peptide blend mimicking BDNF/NGF, supports spiral ganglion neuron survival and synaptic maintenance
- Noise-induced, ototoxic (prevents neuronal degeneration)
- Rodent models show 25–35% threshold shift reduction post-trauma
- Best evidence for acute protective use; unclear if beneficial in chronic established loss
- P21 (CNTF fragment)
- Antioxidant, reduces oxidative stress and apoptosis in cochlear hair cells
- Ototoxic drug exposure (cisplatin, aminoglycosides)
- In vitro and animal models
- Narrow preventive role during chemotherapy or antibiotic use; not regenerative
- Dihexa
- HGF/Met pathway activation, synaptic density restoration in auditory brainstem
- Central auditory processing deficits, cochlear synaptopathy
- Animal studies in aged rats
- Targets central processing, not peripheral hair cell loss. Different mechanism from others