越鞠丸石油醚部位潜在的快速抗抑郁作用与BDNF、TrkB 蛋白表达的上调相关

摘要

Abstact:Aim To identify whether the petroleum e-ther fraction of Yueju pill (YJ-PE)could exhibit a po-tent rapid antidepressant effect and to investigate the underlying biological mechanism involved.Methods Fourty-four male KM mice were randomly assigned to five groups:the control group (saline group),low dosage of YJ-PE,middle dosage of YJ-PE,high dos-age of YJ-PE and ketamine.After a single drug admin-istration,we used tail suspension test (TST)to test the rapid antidepressant effect of YJ-PE in KMmice at 30 min.Another twenty-four male KM mice were ass-inged to three groups:control group,screened effective low dosage of YJ-PE group and ketamine group.We usd TST to assess these mice at 24 h post a single ad- ministration.Western blot was performed to examine the expression of BDNF and TrkB in hippocampus of KMmice at 30 min and 24 h post a single administra-tion.Results An acute administration of YJ-PE de-creased the immobility time of KMmice in TST and in-creased the expression of BDNF and TrkB as soon as 30min post a single administration and lasted at least for 24 hours.Conclusion YJ-PE (low dosage)ex-hibits a rapid antidepressant-like potent,and the po-tent rapid antidepressant effects of YJ-PE are associat-ed with the up-regulation of BDNF and TrkB.%目的：研究越鞠丸石油醚部位是否具有快速抗抑郁潜力，并对其有效剂量及潜在的生物学机制进行了探讨。方法将44只昆明种♂小鼠随机分成空白组（生理盐水组）、越鞠丸石油醚部位（YJ-PE）高、中、低剂量组及氯胺酮组。单次给药后30 min 对昆明小鼠进行小鼠悬尾行为绝望测试。再将24只昆明种♂小鼠分成空白组、筛选出有效的越鞠丸石油醚部位低剂量组和氯胺酮组，单次给药24 h 后进行小鼠悬尾行为绝望测试。利用 Western blot 实验分别检测给药后30 min 及24 h 小鼠海马区 BDNF 和 TrkB 蛋白的表达变化。结果单次给药越鞠丸石油醚部位从30 min 到24 h 均能对其小鼠悬尾的行为绝望行为产生抗抑郁作用。给予越鞠丸石油醚部位30 min 后小鼠海马中的BDNF 及其受体TrkB 的表达明显上调，且这种抗抑郁的作用机制可持续到24 h。结论越鞠丸石油醚部位（低剂量）具有快速抗抑郁的药物潜力，且这种潜在的快速抗抑郁作用与BDNF 及其受体TrkB 的激活相关。