Effect of melatonin on the neurotoxicity of kainite in the hippocampus of rats by intraperitoned administration

目的探讨褪黑素对腹腔注射卡因酸介导大鼠海马神经元损害的影响.方法将大鼠随机分成3组,实验组给予腹腔注射卡因酸,治疗组给予腹腔注射卡因酸和褪黑素,对照组给予腹腔注射等体积磷酸缓冲液(PBS);3天后以尼氏染色法检测大鼠海马神经元,DNA缺口末端标记(TUNEL)法检测海马神经元凋亡.结果大鼠海马神经元计数,尼氏染色实验组及治疗组明显少于对照组(P＜0.01),治疗组明显高于实验组(P＜0.01);TUNEL染色阳性细胞数治疗组明显低于实验组(P＜0.01).结论褪黑素对腹腔注射卡因酸介导大鼠海马神经元凋亡具有保护作用.