Abstract
目的 探讨豚鼠局部应用用庆大霉素的耳蜗毒性作用,以及刺五加有无减轻庆大霉素耳蜗毒性的作用.方法 选择健康豚鼠44只,随机分为三组:Ⅰ为庆大霉素组,Ⅱ为庆大霉素+刺五加组,Ⅲ为生理盐水组;采用鼓膜穿刺法向豚鼠鼓室内注射药物,Ⅱ组同时腹腔注射刺五加注射液;给药2周后检测三组动物的脑干诱发电位(ABR)的阈值变化,并取三组动物耳蜗底周标本行耳蜗铺片及切片,扫描及透射电镜检查.结果 给药后Ⅰ组ABR阈值与Ⅱ组差异有显著性(P<0.01),耳蜗形态学观察示Ⅱ组毛细胞受损程度较Ⅰ组为轻.结论 豚鼠鼓室内注射庆大霉素具有明显的耳蜗毒性,联合应用中药刺五加具有对抗庆大霉素耳毒性的作用。
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