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  • P-ISSN 1010-0695
  • E-ISSN 2288-3339

Therapeutic Effects of Extract of? Uncariae Ramulis and Testudinis Plastrum on Cochlear Morphologic Change Induced by Salicylate Ototoxicity

Journal of Korean Medicine / Journal of Korean Medicine, (P)1010-0695; (E)2288-3339
2004, v.25 no.3, pp.160-168



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Abstract

Background and Objectives : Tinnitus is on the increase due to the increase in the elderly population, industrial pollution and noise pollution. This symptom is especially marked in patients with a hearing problem and the relationship between cause, mechanism and treatment is poorly understood. The characteristics of tinnitus and other hearing problems are well brought out using an animal model with salicylate ototoxicity. The therapeutic effects of Uncariae Ramulis and Testudinis Plastrum were expected in tinnitus and hearing problem; therefore we experimented on an animal model with salicylate ototoxicity. Salicylate is one of the most commonly prescribed drugs although it has been recognized that salicylate induces hearing loss and tinitus reversibly. The purpose of this study was to find out the therapeutic effects of this by the morphologic study using salicylate ototoxicity. Materials and Methods : Healty twelve Sprague-Dawley rats were divided into three groups : normal, control and sample. The sample group was treated with the extract of Uncariae Ramulis and Testudinis Plastrum (1cc/100g, once a day for 6days). And then, to induce the salicylate ototoxicity in the control and sample groups, rats were injected intraperitoneally with sodium salicylate (500mg/kg). We observed the morphologic changes in the cochlea of rats every 2, 3, 4 and 5 hours after injection. Results : The outer hair cells showed marked changes. Vacuolization formed in the cuticular plate and the endoplasm of the control group. The endoplasm and the cuticular plate of the sample group after 2 hours were similar to the control group. But the cuticular plate of the sample group observed after 3, 4 and 5 hours were not similar. Conclusion : The results suggest that an extract of Uncariae Ramulis and Testudinis Plastrum has therapeutic effects on an animal model with salicylate ototoxicity.

keywords
salicylate ototoxicity, Uncariae Ramulis and Testudinis Plastrum, tinitus, hearing loss, Morphologic change, salicylate ototoxicity, Uncariae Ramulis and Testudinis Plastrum, tinitus, hearing loss, Morphologic change


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