Key result
KCNQ4 deficiency in mice impairs medial olivocochlear system development, demonstrating that KCNQ4 is essential for outer hair cell repolarization, maturation, and efferent synapse maintenance.
Reveals impaired cochlear efferent synapse development in KCNQ4-deficient mice, suggesting crucial roles for KCNQ4.
The medial olivocochlear (MOC) efferent system modulates outer hair cell (OHC) excitability and protects cochlea from overstimulation. Cholinergic activation of α9α10 nicotinic acetylcholine receptors (nAChRs) triggers Ca⁺
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Rías et al. (2026) studied this question. KCNQ4 deficiency in mice impairs medial olivocochlear system development, demonstrating that KCNQ4 is essential for outer hair cell repolarization, maturation, and efferent synapse maintenance.
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