Aminoglycoside binding sites in the cochlea as revealed by neomycin-gold labelling |
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| Authors: | M Tachibana H Morioka M Machino T Amagai O Mizukoshi |
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| Institution: | (1) Department of Otolaryngology, Kyoto Prefectural University of Medicine, Kawara-machi Hirokoji, Kamikyo-ku, 602 Kyoto, Japan;(2) Laboratory of Electron Microscopy, Kyoto Prefectural University of Medicine, Kawara-machi Hirokoji, Kamikyo-ku, 602 Kyoto, Japan;(3) Department of Bacteriology, Kyoto Prefectural University of Medicine, Kawara-machi Hirokoji, Kamikyo-ku, 602 Kyoto, Japan |
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| Abstract: | Summary Neomycin/bovine serum albumin/gold was used as a probe to detect the binding sites of aminoglycosides on the thin sections of the cochlea embedded in Spurr. The binding sites were mainly located on the stereocilia, the cuticular plate of hair cells, the head plates of Deiters' cells, fibrous structures in pillar cells, in the spiral limbus and tectorial membrane and basilar membrane, plasma membranes, mitochondria and the chromatin of various kinds of cells. Triphosphoinositide, acidic glycosaminoglycans, and RNA were considered to be responsible for the binding activity. |
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