PROBLEM TO BE SOLVED: To provide method(s) for preventing and/or treating hearing loss and loss of the sense of balance.SOLUTION: The method(s) for preventing and/or treating damage to sensory hair cells and cochlear neurons is(are) provided, including administering an effective amount of a compound of formula I or formula II. The method(s) provide(s) for the prevention/treatment of both hearing loss and loss of the sense of balance.COPYRIGHT: (C)2011,JPO&INPIT【解決手段】 感覚毛細胞及び蝸牛ニューロンへの損傷を予防もしくは処置するための方法を開示する。該方法は有効量の式I又は式IIの化合物の投与を含む。該方法は聴覚障害及び平衡感覚の喪失の両方の予防/処置を与える。【選択図】 なし