Background:Neuro-inflammation is regarded as one of the critical pathogenesis in neurodegenerative diseases,which is characterized by the activated microglial cells.Pectolinarin(Pec),a natural flavonoid that exists in...Background:Neuro-inflammation is regarded as one of the critical pathogenesis in neurodegenerative diseases,which is characterized by the activated microglial cells.Pectolinarin(Pec),a natural flavonoid that exists in many Chinese herbal medicines,has been reported to have various biological activities.However,the effects and mechanisms on neuro-inflammation are not clear.Methods:In this study,the inhibitory effects and mechanisms of Pec on neuro-inflammation were investigated in the LPS-stimulated microglial BV_(2) cells.BV_(2) microglial cells were treated with Pec or vehicle,followed by LPS.Enzyme-linked immunosorbent assay,real-time quantitative PCR,nitric oxide and reactive oxygen species assay,and western blot were performed to examine the effects of Pec on neuro-inflammatory responses.Results:We showed that Pec significantly inhibited the expression of tumor necrosis factorαand interleukin 6 in mRNA and protein levels induced by LPS.Moreover,the production of nitric oxide,iNOS,reactive oxygen species,and COX-2 were suppressed by Pec in LPS-stimulated microglial BV_(2) cells.In addition,Pec inhibited LPS-induced inflammation via nuclear factor kappa B signaling pathway,as evidenced by the reduction of the phosphorylation of inhibitor of nuclear factor kappa-B kinase,the degradation of IκBα,and the nuclear translocation of p65.Conclusion:Taken together,Pec exhibited anti-inflammatory effects in LPS-stimulated microglial BV_(2) cells via nuclear factor kappa B signaling pathway,which might provide therapeutic potential for neuro-inflammation and neurodegenerative diseases.展开更多
Neuroinflammation is implicated in the pathophysiology of depression.The reduction of hippocampal volume in depression remains controversial because of interindividual variability in clinical studies.Herein,we studied...Neuroinflammation is implicated in the pathophysiology of depression.The reduction of hippocampal volume in depression remains controversial because of interindividual variability in clinical studies.Herein,we studied the effects of clomipramine,a tricyclic antidepressant(TCA)that modulates serotonin and norepinephrine uptake,on chronic mild unpredictable stress(CMS)-induced depressive-like behaviors,hippocampal neuroinflammation,and hippocampal volume.展开更多
Neuroinflammation is implicated in the pathophysiology of depression. The reduction of hippocampal volume indepression remains controversial because of interindividual variability in clinical studies. Herein, we studi...Neuroinflammation is implicated in the pathophysiology of depression. The reduction of hippocampal volume indepression remains controversial because of interindividual variability in clinical studies. Herein, we studied theeffects of clomipramine, a tricyclic antidepressant (TCA) that modulates serotonin and norepinephrine uptake, onchronic mild unpredictable stress (CMS) induced depressive-like behaviors, hippocampal neuroinflammation, and hippocampal volume. Using a rat model of CMS induced depression, we administered clomipramine every day for4 weeks, starting 8 weeks after the beginning of the CMS procedure. Behavioral changes were measured by forcedswim test, open field test, and elevated plus maze. Neuroinflammation in the hippocampus was assessed byimmunohistochemistry, Western blot analysis, and quantitative polymerase chain reaction. Hippocampal volumeswere dynamically measured using T2- weighted imaging with 7T structural magnetic resonance imaging.展开更多
基金supported by the grants from the Training Program for Young Backbone Teachers in Colleges and Universities of Henan Province(2021GGJS103)the Program for Science and Technology Innovation Team in Universities of Henan Province(22IRTSTHN030)the Henan Neural Development Engineering Research Center for Children Foundation(SG201909).
文摘Background:Neuro-inflammation is regarded as one of the critical pathogenesis in neurodegenerative diseases,which is characterized by the activated microglial cells.Pectolinarin(Pec),a natural flavonoid that exists in many Chinese herbal medicines,has been reported to have various biological activities.However,the effects and mechanisms on neuro-inflammation are not clear.Methods:In this study,the inhibitory effects and mechanisms of Pec on neuro-inflammation were investigated in the LPS-stimulated microglial BV_(2) cells.BV_(2) microglial cells were treated with Pec or vehicle,followed by LPS.Enzyme-linked immunosorbent assay,real-time quantitative PCR,nitric oxide and reactive oxygen species assay,and western blot were performed to examine the effects of Pec on neuro-inflammatory responses.Results:We showed that Pec significantly inhibited the expression of tumor necrosis factorαand interleukin 6 in mRNA and protein levels induced by LPS.Moreover,the production of nitric oxide,iNOS,reactive oxygen species,and COX-2 were suppressed by Pec in LPS-stimulated microglial BV_(2) cells.In addition,Pec inhibited LPS-induced inflammation via nuclear factor kappa B signaling pathway,as evidenced by the reduction of the phosphorylation of inhibitor of nuclear factor kappa-B kinase,the degradation of IκBα,and the nuclear translocation of p65.Conclusion:Taken together,Pec exhibited anti-inflammatory effects in LPS-stimulated microglial BV_(2) cells via nuclear factor kappa B signaling pathway,which might provide therapeutic potential for neuro-inflammation and neurodegenerative diseases.
文摘Neuroinflammation is implicated in the pathophysiology of depression.The reduction of hippocampal volume in depression remains controversial because of interindividual variability in clinical studies.Herein,we studied the effects of clomipramine,a tricyclic antidepressant(TCA)that modulates serotonin and norepinephrine uptake,on chronic mild unpredictable stress(CMS)-induced depressive-like behaviors,hippocampal neuroinflammation,and hippocampal volume.
文摘Neuroinflammation is implicated in the pathophysiology of depression. The reduction of hippocampal volume indepression remains controversial because of interindividual variability in clinical studies. Herein, we studied theeffects of clomipramine, a tricyclic antidepressant (TCA) that modulates serotonin and norepinephrine uptake, onchronic mild unpredictable stress (CMS) induced depressive-like behaviors, hippocampal neuroinflammation, and hippocampal volume. Using a rat model of CMS induced depression, we administered clomipramine every day for4 weeks, starting 8 weeks after the beginning of the CMS procedure. Behavioral changes were measured by forcedswim test, open field test, and elevated plus maze. Neuroinflammation in the hippocampus was assessed byimmunohistochemistry, Western blot analysis, and quantitative polymerase chain reaction. Hippocampal volumeswere dynamically measured using T2- weighted imaging with 7T structural magnetic resonance imaging.
