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  • Title: Ototoxicity of the new platinum anticancer agent TRK-710 in comparison with cisplatin.
    Author: Saito T, Manabe Y, Saito H.
    Journal: ORL J Otorhinolaryngol Relat Spec; 1995; 57(5):250-5. PubMed ID: 8587776.
    Abstract:
    The pharmacokinetics and ototoxicity of the new platinum analogue TRK-710 (3, 9, 15 mg/kg x 3 days) were compared with those of cisplatin (1, 3, 5 mg/kg x 3). The perilymphatic concentration of TRK-710 was one seventh of that of cisplatin even 1 h after the administration. The N1 threshold of the compound action potential was elevated dose-dependently in both groups with a similar degree of hearing impairment. Morphological observation using phase contrast microscopy and scanning electron microscopy revealed the damage of the outer hair cells to almost the same degree mainly in the basal and second turns. Despite its usefulness against cisplatin-resistant tumors and a lesser degree of nephrotoxicity and myelosuppression, TRK-710 should be clinically used with caution similar to cisplatin.
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