Atoxyl-Induced damage to the sensory cells in the organ of corti in the guinea pig cochlea

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Abstract
Summary Atoxyl-induced damage to the inner and the outer hair cells in the guinea pig cochlea starts in the apical coil and spreads successively downward toward the round window. Vesicular degeneration of both the inner and the outer hair cells and the cell organelles occurs. The degeneration is probably caused by an alteration in ionic composition of the endolymph resulting from primary changes of the stria vascularis (vesiculation and rejection of degenerated marginal and intermediate cells) as reported by Anniko and Wersäll (1975). However, a direct action of atoxyl on the sensory cells of the organ of Corti cannot be excluded.