Baicalin Ameliorates Corticosterone-Induced Depression by Promoting Neurodevelopment of Hippocampal via mTOR/GSK3β Pathway  

作　　者：WANG Zhe CHENG Ya-ting LU Ye SUN Guo-qiang PEI Lin 

机构地区：[1]School of Basic Medicine,Hebei University of Chinese Medicine,Shijiazhuang(050200),China [2]Hebei Province Academy of Chinese Medicine Sciences,Shijiazhuang(050031),China

出　　处：《Chinese Journal of Integrative Medicine》2023年第5期405-412,共8页中国结合医学杂志（英文版）

基　　金：Supported by the National Key Research and Development Program (No.2017YFC1701701);the Postgraduate Innovation Funding Project of Hebei University of Chinese Medicine (No.XCXZZBS2020005)。

摘　　要：Objective: To investigate the role of hippocampal neurodevelopment in the antidepressant effect of baicalin. Methods: Forty male Institute of Cancer Research mice were divided into control, corticosterone(CORT,40 mg/kg), CORT+baicalin-L(25 mg/kg), CORT+baicalin-H(50 mg/kg), and CORT+fluoxetine(10 mg/kg)groups according to a random number table. An animal model of depression was established by chronic CORT exposure. Behavioral tests were used to assess the reliability of depression model and the antidepressant effect of baicalin. In addition, Nissl staining and immunofluorescence were used to evaluate the effect of baicalin on hippocampal neurodevelopment in mice. The protein and mRNA expression levels of neurodevelopment-related factors were detected by Western blot analysis and real-time polymerase chain reaction, respectively. Results:Baicalin significantly ameliorated the depressive-like behavior of mice resulting from CORT exposure and promoted the development of dentate gyrus in hippocampus, thereby reversing the depressive-like pathological changes in hippocampal neurons caused by CORT neurotoxicity. Moreover, baicalin significantly decreased the protein and mRNA expression levels of glycogen synthase kinase 3β(GSK3β), and upregulated the expression levels of cell cycle protein D1, p-mammalian target of rapamycin(mTOR), doublecortin, and brainderived neurotrophic factor(all P<0.01). There were no significant differences between baicalin and fluoxetine groups(P>0.05). Conclusion: Baicalin can promote the development of hippocampal neurons via mTOR/GSK3β signaling pathway, thus protect mice against CORT-induced neurotoxicity and play an antidepressant role.

关 键 词：BAICALIN DEPRESSION NEURODEVELOPMENT hippocampal neuronal mammalian target of rapamycin/glycogen synthase kinase 3βpathway 

分 类 号：R285.5[医药卫生—中药学]