ArticleMolecular medicine (Cambridge, Mass.)2026
Neuroprotective potential of a TrkB-FL-derived cell-penetrating peptide in cochlear synaptopathy and noise-induced hearing loss.
Article in Molecular medicine (Cambridge, Mass.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundNoise-induced hearing loss (NIHL) is the second leading cause of deafness globally. However, effective pharmacological treatments remain unavailable. Excitotoxicity, an early NIHL event, is a central mechanism in degeneration of cochlear synapses established between inner hair cells (IHCs) and spiral ganglion neurons (SGNs). This excitotoxic damage can trigger the degradation of the neurotrophic TrkB receptor, thereby inhibiting brain-derived neurotrophic factor (BDNF) signaling and challenging neurotrophin-based therapies for hearing loss.
methodsWe employed an ex vivo model of excitotoxicity, where excitotoxicity was induced in cochlear explants by overstimulation of excitatory glutamate receptors, and an in vivo model of noise overexposure. The effects of excitotoxicity on the neurotrophic system and cell architecture were established by immunohistochemistry. Hearing function was evaluated in vivo by the auditory brainstem responses (ABR) test, performed before and after noise overexposure.
resultsIn this study, we evaluated the therapeutic potential in the inner ear of MTFL
conclusionsThese results support the therapeutic potential of peptide MTFL
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