一种白僵菌代谢产物提取物抗实验性抑郁的研究

目的　研究一种白僵菌代谢产物提取物 (BCEF0 0 83)抗实验性抑郁的作用。方法　采用小鼠获得性绝望模型 (小鼠强迫游泳实验、小鼠悬尾实验 )及慢性不可预见性应激、孤养模型研究BCEF0 0 83抗实验性抑郁作用及可能的作用机制 ;采用紫外、荧光分光光度计法检测BCEF0 0 83对模型动物脑组织单胺氧化酶活性、单胺递质含量的影响。结果　在小鼠强迫游泳实验、小鼠悬尾实验中 ,BCEF0 0 832 5、5 0、10 0mg·kg-13个剂量组均可明显缩短小鼠的不动时间 ,且呈现一定的量效关系 ;BCEF0 0 832 5、5 0、10 0mg·kg-13个剂量组对慢性应激模型小鼠脑组织重线粒体MAO A ,B活性均有明显的抑制作用 ,且呈现一定的量效关系。BCEF0 0 832 5、5 0、10 0mg·kg-13个剂量组对慢性应激模型小鼠脑组织NE、5 HT、5 HIAA、DA的含量有不同程度的提高。结论　BCEF0 0 83具有一定的抗小鼠实验性抑郁作用 ,其机制可能与抑制动物脑组织单胺氧化酶活性、升高单胺递质含量有关。

Antidepressant effects of bioactive compounds from entomogenous fungi in mouse models of depression

AIM To study the antidepressant effects of bioactivecompounds from entomogenous fungi(BCEF) in mice models of depression. METHODS The antidepressant effects of Bioactive compounds from entomogenous fungi were examined in the learned helplessness model( forced swimming mice, tail suspension mice) and chronic unpredictable stress mice models. Spectrofluorometer and UV spectrophotometer were used to detect the activity of MAO, central monoamine neurotransmitter in mice brain mitochondria. RESULTS BCEF0083 25,50,100 mg·kg -1 could obviously shorten the immobility time in forced swimming mice, tail suspension mice and showed some extent of dose-effect relationship. BCEF0083 25,50,100 mg·kg -1 could obviously inhibite the activity of MAO-A,B on brain remitochondria in chronic unpredictable stress mice models and could rise the content of NE,5-HT,5-HIAA,DA in defferent degree. CONCLUSION The results suggested that BCEF0083 had antidepressant effects in mice depression models. The mechanisms of BCEF0083 antidepressant effects may be related with the inhibition of MAO-A,B activity and the increased content of central monoamine neurotransmitter.