目的:研究安神补脑液对睡眠剥夺大鼠的学习记忆能力影响,并从脑源性神经营养因子(BDNF)角度探讨其机理。方法:SD大鼠,随机分成正常对照组、正常对照+安神补脑液小剂量组及模型+蒸馏水组及模型+安神补脑液大、小剂量组。灌胃给予安神补脑液2周后,用多站台水环境法进行睡眠剥夺造模4d,用避暗法测试其学习记忆能力,并取海马组织用Westem blot法测定BDNF表达量。结果:与正常对照组比较,睡眠剥夺大鼠避暗测试潜伏期显著减短,表明出现学习记忆能力障碍;大剂量安神补脑液给药能显著延长模型大鼠的潜伏期,表明该药可有效减轻大鼠睡眠剥夺后的学习记忆障碍。安神补脑液也能延长正常大鼠避暗实验的潜伏期。在睡眠剥夺大鼠海马组织BDNF表达量显著降低,而用安神补脑液干预后模型大鼠BDNF表达量增加,在大剂量组出现显著性差异。结论:安神补脑液能提高睡眠剥夺鼠的学习记忆能力,其机理之一可能与提高海马BDNF含量有关。
AIM: To study the effects of An-Shen-Bu-Nao syrup (AS) on the learning and memory ability and BDNF expression in the hippocampus of sleep deprivation (SD) rats. METHODS: 75 rats were divided into groups of control, control + AS (0.02 ml· kg^-1 ), SD + distillated water (DW), SD + AS (0.02 ml· kg^-1 ), and SD + AS (0.06 ml· kg^-1 ). All rats were fed with AS or DW for 2 weeks, and they were subjected to sleep deprivation for 4 days, then the passive avoidance was tested for learning and memory. Also the BDNF expression in the hippocampus was tested with western blot after sacririce. RESULTS: Compared with the control rats, SD rats had the significantly reduced latency in passive avoidance test, showing the decreased learning and memory ability. SD combined with AS (0.06 ml· kg^-1 ) rats showed significantly longer latency than the SD rats ( P 〈 0.05), indicating the better learning and memory ability than the sleep deprivation rats; BDNF expression was significanfly higher in the rats of SD combined with AS (0.06ml· kg^-1 ) than the SD rats. CONCLUSION: An-Shen-Bu-Nao Syrup can effectively improve the learning and memory ability of sleep deprivation rats, and the enhancement of BDNF expression may contribute to this effect.