“肠漏”指的是在外界应激、高脂膳食等作用下,肠道通透性发生改变,使得肠道内革兰氏阴性菌发生移位,产生一系列的免疫激活。脂多糖(lipopolysaccharide,LPS)是肠道革兰氏阴性菌的主要组成部分,也是内毒素的主要活性成分。应激能够损坏...“肠漏”指的是在外界应激、高脂膳食等作用下,肠道通透性发生改变,使得肠道内革兰氏阴性菌发生移位,产生一系列的免疫激活。脂多糖(lipopolysaccharide,LPS)是肠道革兰氏阴性菌的主要组成部分,也是内毒素的主要活性成分。应激能够损坏肠粘膜屏障,增加肠道通透性,从而使LPS移位进入血液,在血清中由LPS结合蛋白运输至单核细胞和巨噬细胞,再与Toll样受体4(Toll like receptor-4,TLR4)结合后激活机体的神经免疫系统,相关脑区免疫系统的激活可能导致抑郁行为的发生。TLR4信号通路过度激活是抑郁的触发因素之一。适度运动可以弱化“肠漏-免疫激活-抑郁性神经炎症”,缓解海马神经发生、神经营养因子的减少。运动对“肠漏-免疫激活”的调控是治疗抑郁行为的潜在靶点。对该机制的探讨、梳理,有助于正确理解“肠-脑”对话机制在抑郁行为发生中的作用,也为运动干预抑郁行为提供更多的研究思路。展开更多
Objective To investigate the ameliorating effect of ginsenoside Rg1 on the depression-like behaviors induced by chronic restraint stress(CRS)in rats and the underlying mechanisms.Methods Forty male Wistar rats were di...Objective To investigate the ameliorating effect of ginsenoside Rg1 on the depression-like behaviors induced by chronic restraint stress(CRS)in rats and the underlying mechanisms.Methods Forty male Wistar rats were divided into 4 groups according to their baseline sucrose preference:control group,model group,and Rg1-treated groups(5 and 10 mg/kg).Except for control group,the groups were exposed to CRS(6 h/day)for 28 days.All drugs were intraperitoneally administered once daily to CRS rats after restraint stress for 14 days.The behavioral tests were carried out via the open field test(OFT),sucrose preference test(SPT),forced swim test(FST),and the Morris water maze(MWM)4 weeks following CRS induction.The levels of serum corticosterone(CORT)and the activities of the antioxidant defense biomarkers(SOD,MDA and GSH-x)in the prefrontal cortex(PFC)were analyzed using commercial ELISA kits.The levels of the neurotransmitter(5-HT,5-HIAA,Ach,NE,GABA and Glu)in the PFC were measured by ultra-performance liquid chromatography tandem mass spectrometry.The protein expression of BDNF,Trkb,Bax and Bcl-2 in the PFC was detected by western blotting.Results Owing to increased sucrose consumption in the SPT,decreased immobility time in the FST,and the improved cognitive performance in MWM,chronic treatment with Ginsenoside Rg1 was found to significantly attenuate depressionlike behaviors(anhedonia,behavioral despair and poor spatial memory)in rats.Moreover,CRS exposure caused evident alterations in the levels of the neurotransmitters(5-HT,5-HIAA,Ach,GABA and Glu)and the activities of the antioxidant defense biomarkers(SOD,MDA and GSH-x)in the PFC and the levels of corticosterone in serum.However,Ginsenoside Rg1 treatment could restore these levels to normal values.Additionally,Ginsenoside Rg1 treatment significantly reverted the decreased expression of BDNF,Trkb and Bcl-2 and the increased expression of Bax in the PFC of CRS rats.Conclusions Ginsenoside Rg1 could attenuate the CRS-induced depression-like behaviors,in part,by regulating neurotransmitter levels and HPA function,antagonizing oxidative stress and apoptosis,and restoring BDNF-TrkB signaling in PFC.Altogether,our results provide a novel basis regarding the potential therapeutic effects of Rg1 on depression.展开更多
Objectives: The aim of this study was to investigate the effect of linalool in chronically stressed rats on their behaviour as related to depressive disorders and BDNF (brain-derived neurotropic factor) protein in ...Objectives: The aim of this study was to investigate the effect of linalool in chronically stressed rats on their behaviour as related to depressive disorders and BDNF (brain-derived neurotropic factor) protein in the hippocampus. Methods: Either Tween 80 or linalool (50, 160, 500 mg/kg) was intraperitonealty administered to rats, daily, for two weeks. Some rats were housed in home cages but the others were induced with chronic restrained stress (15 min daily). At the end of the treatment, the rats were assessed for depressive-like behaviour using the forced swimming test. At the end of the behaviour test, the animals were immediately decapitated and the hippocampus of each animal was removed for the measurement of the BDNF protein by ELISA. Result: The immobility time was significantly increased (p 〈 0.05) but time of climbing was significantly decreased (p 〈 0.05). The restrained rats treated with linalool, 500 mg/kg, displayed immobility times less than those of their controls (p 〈 0.05) while these rats showed significantly more climbing than in the control rats (p 〈 0.05). Linalool showed no effect on the BDNF protein in the hippocampus. Conclusions: linalool decreases behaviour related to depressive disorders but it has no effect on the BDNF protein in chronic restrained stress.展开更多
Objective:To discuss the clinical efficacy and plausible mechanism of Tiao Yang Qu Xie(regulating Yang to eliminate pathogenic factors)needling method plus paroxetine in treating mild-to-moderate depression.Methods:Si...Objective:To discuss the clinical efficacy and plausible mechanism of Tiao Yang Qu Xie(regulating Yang to eliminate pathogenic factors)needling method plus paroxetine in treating mild-to-moderate depression.Methods:Sixty-six patients with mild-to-moderate depression were divided into an observation group and a control group using the random number table method,each consisting of 33 cases.Another 25 healthy subjects were recruited as a healthy group.The control group took oral paroxetine tablets for treatment,and the observation group received additional acupuncture treatment 3 times weekly.Both groups underwent 4-week treatment.Before treatment,after 2-week and 4-week treatment,and 2 weeks after treatment(follow-up),the patients were assessed using the Hamilton depression scale-17-item(HAMD-17),self-rating depression scale(SDS),self-rating anxiety scale(SAS),and traditional Chinese medicine(TCM)pattern element identification scale for depression.The two groups each randomly contributed 25 cases to detect the protein content of brain-derived neurotrophic factor(BDNF)before treatment and after 4-week treatment,and compared with the healthy group.Results:After 2-week treatment,the markedly effective and total effective rates were significantly higher in the observation group than in the control group(P<0.05);after 4-week treatment,the observation group significantly surpassed the control group in comparing the markedly effective rate(P<0.05).After 2 and 4 weeks of treatment and at the follow-up,the HAMD-17 total score and sleep disorder factor score were lower in the observation group than in the control group(P<0.05);the anxiety-somatic score was lower in the observation group than in the control group after 2-week treatment(P<0.05).After 2 and 4 weeks of treatment and at the follow-up,the observation group was lower than the control group in comparing the scores of SDS,SAS,and TCM pattern element identification scale for depression(P<0.05).After 4-week treatment,the observation group had an increased serum BDNF protein content,higher than that in the control group(P<0.05)and had no significant difference compared to the healthy group(P>0.05).Conclusion:Compared to the use of oral paroxetine alone,acupuncture plus paroxetine can produce more significant efficacy in treating mild-to-moderate depression and act faster in improving sleep disorder and anxiety-somatic symptoms;increasing the serum BDNF protein content may be a part of the mechanism underlying its antidepressant actions.展开更多
Objective To investigate the roles of estrogen and kalirin-7 in chronic restraint stress (CRS)-induced depression and the pathophysiological mechanism of depression. Methods Healthy female mice from Institute of Can...Objective To investigate the roles of estrogen and kalirin-7 in chronic restraint stress (CRS)-induced depression and the pathophysiological mechanism of depression. Methods Healthy female mice from Institute of Cancer Research (ICR) were randomly divided into 3 groups: control group, CRS group, and estrogen + CRS group. CRS was used to establish the animal model of depression. Forced swimming test and immunohistochemistry method were utilized to investigate the animal behavior and kalirin-7 expression in the hippocampus, respectively. Results Compared with the control group, the CRS mice displayed depression-like behaviors, including a significant reduction in body weight, a significant increase in immobility time in forced swimming test, and a dramatic decrease in kalirin-7 expression in the hippocampus. However, administration of estrogen attenuated the CRS-induced negative behaviors, and simultaneously increased kalirin-7 expression. Conclusion Estrogen replacement therapy (ERT) could prevent CRS-induced depression-like behaviors in female ICR mice. Besides, kalirin-7 also plays a role in preventing CRS-induced depression-like behaviors.展开更多
Objective: To observe therapeutic effect of acupuncture for regulating the liver on depressive neurosis. Methods: In a multi-center randomized controlled trial, 440 patients were divided into 3 groups: Acupuncture gro...Objective: To observe therapeutic effect of acupuncture for regulating the liver on depressive neurosis. Methods: In a multi-center randomized controlled trial, 440 patients were divided into 3 groups: Acupuncture group for regulating the liver (Acup., 176 cases) was treated by acupuncture at Siguan Points, i.e. bilateral Hegu (LI 4) and Taichong (LR 3), Baihui (GV 20) and Yintang (EX-HN3) plus ear-acupuncture, Prozac group (P., 176 cases) by oral administration of Prozac, and Non-acupoint needling group (NAN, 88 cases) by acupuncture at non-acupoints as acupuncture placebo. Self-rating Depression Scale (SDS) was examined before treatment, and one month, two and three months after treatment respectively to evaluate therapeutic effect, and Rating Scale for Side Effects (SERS) was used to evaluate the safety. Results: After one month of treatment, SDS scores in Acup. Group were significantly lower than that in P. Group (P<0.05) and than that in NAN Group (P<0.01), and SDS scores in P. Group were lower than that in NAN Group (P<0.05), showing the SDS scores in Acup. Group <P. Group <NAN Group. After 2 months of treatment, SDS scores in Acup. Group were also significantly lower than that in P. Group (P<0.01) and than that in NAN Group (P<0.01), and SDS scores in P. Group were also lower than that in NAN Group (P<0.05), showing the SDS scores in Acup. Group <P. Group <NAN Group. After 3 months of treatment, SDS scores in Acup. Group were also significantly lower than that in P. Group (P<0.01) and than that in NAN Group (P<0.01), and SDS scores in P. Group were also lower than that in NAN Group (P<0.01), showing the SDS score in Acup. Group <P. Group <NAN Group. After treatment, SERS scores were 0.16±0.95, 6.51±5.09 and 0.23±1.36 in Acup. Group, P. Group and NAN Group respectively. A significant difference existed between Acup. Group and P. Group (P<0.05), but no significant difference between Acup. Group and NAN Group (P>0.05), showing the SERS scores in Acup. Group <NAN Group <P. Group. No side effect was found in Acup. and NAN groups. Conclusion: The therapeutic effect of acupuncture on depressive neurosis is better than or similar to that of Prozac but with less side effect.展开更多
文摘“肠漏”指的是在外界应激、高脂膳食等作用下,肠道通透性发生改变,使得肠道内革兰氏阴性菌发生移位,产生一系列的免疫激活。脂多糖(lipopolysaccharide,LPS)是肠道革兰氏阴性菌的主要组成部分,也是内毒素的主要活性成分。应激能够损坏肠粘膜屏障,增加肠道通透性,从而使LPS移位进入血液,在血清中由LPS结合蛋白运输至单核细胞和巨噬细胞,再与Toll样受体4(Toll like receptor-4,TLR4)结合后激活机体的神经免疫系统,相关脑区免疫系统的激活可能导致抑郁行为的发生。TLR4信号通路过度激活是抑郁的触发因素之一。适度运动可以弱化“肠漏-免疫激活-抑郁性神经炎症”,缓解海马神经发生、神经营养因子的减少。运动对“肠漏-免疫激活”的调控是治疗抑郁行为的潜在靶点。对该机制的探讨、梳理,有助于正确理解“肠-脑”对话机制在抑郁行为发生中的作用,也为运动干预抑郁行为提供更多的研究思路。
基金funding support from the Open Funding Project of National Key Laboratory of Human Factors Engineering (No. SYFD150051808K)the National Key Research and Development Program of China (No. 2016YFE0131800)the Highend Talents Recruitments Program (Liu Xin-Min group) of Luzhou Municipal People’s Government and Development of Animal Model on Human Diseases (No. 2016-I2M-2-006)
文摘Objective To investigate the ameliorating effect of ginsenoside Rg1 on the depression-like behaviors induced by chronic restraint stress(CRS)in rats and the underlying mechanisms.Methods Forty male Wistar rats were divided into 4 groups according to their baseline sucrose preference:control group,model group,and Rg1-treated groups(5 and 10 mg/kg).Except for control group,the groups were exposed to CRS(6 h/day)for 28 days.All drugs were intraperitoneally administered once daily to CRS rats after restraint stress for 14 days.The behavioral tests were carried out via the open field test(OFT),sucrose preference test(SPT),forced swim test(FST),and the Morris water maze(MWM)4 weeks following CRS induction.The levels of serum corticosterone(CORT)and the activities of the antioxidant defense biomarkers(SOD,MDA and GSH-x)in the prefrontal cortex(PFC)were analyzed using commercial ELISA kits.The levels of the neurotransmitter(5-HT,5-HIAA,Ach,NE,GABA and Glu)in the PFC were measured by ultra-performance liquid chromatography tandem mass spectrometry.The protein expression of BDNF,Trkb,Bax and Bcl-2 in the PFC was detected by western blotting.Results Owing to increased sucrose consumption in the SPT,decreased immobility time in the FST,and the improved cognitive performance in MWM,chronic treatment with Ginsenoside Rg1 was found to significantly attenuate depressionlike behaviors(anhedonia,behavioral despair and poor spatial memory)in rats.Moreover,CRS exposure caused evident alterations in the levels of the neurotransmitters(5-HT,5-HIAA,Ach,GABA and Glu)and the activities of the antioxidant defense biomarkers(SOD,MDA and GSH-x)in the PFC and the levels of corticosterone in serum.However,Ginsenoside Rg1 treatment could restore these levels to normal values.Additionally,Ginsenoside Rg1 treatment significantly reverted the decreased expression of BDNF,Trkb and Bcl-2 and the increased expression of Bax in the PFC of CRS rats.Conclusions Ginsenoside Rg1 could attenuate the CRS-induced depression-like behaviors,in part,by regulating neurotransmitter levels and HPA function,antagonizing oxidative stress and apoptosis,and restoring BDNF-TrkB signaling in PFC.Altogether,our results provide a novel basis regarding the potential therapeutic effects of Rg1 on depression.
文摘Objectives: The aim of this study was to investigate the effect of linalool in chronically stressed rats on their behaviour as related to depressive disorders and BDNF (brain-derived neurotropic factor) protein in the hippocampus. Methods: Either Tween 80 or linalool (50, 160, 500 mg/kg) was intraperitonealty administered to rats, daily, for two weeks. Some rats were housed in home cages but the others were induced with chronic restrained stress (15 min daily). At the end of the treatment, the rats were assessed for depressive-like behaviour using the forced swimming test. At the end of the behaviour test, the animals were immediately decapitated and the hippocampus of each animal was removed for the measurement of the BDNF protein by ELISA. Result: The immobility time was significantly increased (p 〈 0.05) but time of climbing was significantly decreased (p 〈 0.05). The restrained rats treated with linalool, 500 mg/kg, displayed immobility times less than those of their controls (p 〈 0.05) while these rats showed significantly more climbing than in the control rats (p 〈 0.05). Linalool showed no effect on the BDNF protein in the hippocampus. Conclusions: linalool decreases behaviour related to depressive disorders but it has no effect on the BDNF protein in chronic restrained stress.
文摘Objective:To discuss the clinical efficacy and plausible mechanism of Tiao Yang Qu Xie(regulating Yang to eliminate pathogenic factors)needling method plus paroxetine in treating mild-to-moderate depression.Methods:Sixty-six patients with mild-to-moderate depression were divided into an observation group and a control group using the random number table method,each consisting of 33 cases.Another 25 healthy subjects were recruited as a healthy group.The control group took oral paroxetine tablets for treatment,and the observation group received additional acupuncture treatment 3 times weekly.Both groups underwent 4-week treatment.Before treatment,after 2-week and 4-week treatment,and 2 weeks after treatment(follow-up),the patients were assessed using the Hamilton depression scale-17-item(HAMD-17),self-rating depression scale(SDS),self-rating anxiety scale(SAS),and traditional Chinese medicine(TCM)pattern element identification scale for depression.The two groups each randomly contributed 25 cases to detect the protein content of brain-derived neurotrophic factor(BDNF)before treatment and after 4-week treatment,and compared with the healthy group.Results:After 2-week treatment,the markedly effective and total effective rates were significantly higher in the observation group than in the control group(P<0.05);after 4-week treatment,the observation group significantly surpassed the control group in comparing the markedly effective rate(P<0.05).After 2 and 4 weeks of treatment and at the follow-up,the HAMD-17 total score and sleep disorder factor score were lower in the observation group than in the control group(P<0.05);the anxiety-somatic score was lower in the observation group than in the control group after 2-week treatment(P<0.05).After 2 and 4 weeks of treatment and at the follow-up,the observation group was lower than the control group in comparing the scores of SDS,SAS,and TCM pattern element identification scale for depression(P<0.05).After 4-week treatment,the observation group had an increased serum BDNF protein content,higher than that in the control group(P<0.05)and had no significant difference compared to the healthy group(P>0.05).Conclusion:Compared to the use of oral paroxetine alone,acupuncture plus paroxetine can produce more significant efficacy in treating mild-to-moderate depression and act faster in improving sleep disorder and anxiety-somatic symptoms;increasing the serum BDNF protein content may be a part of the mechanism underlying its antidepressant actions.
基金supported by the Natural Science Foundation of Shaanxi Province, China (No.2006C240)
文摘Objective To investigate the roles of estrogen and kalirin-7 in chronic restraint stress (CRS)-induced depression and the pathophysiological mechanism of depression. Methods Healthy female mice from Institute of Cancer Research (ICR) were randomly divided into 3 groups: control group, CRS group, and estrogen + CRS group. CRS was used to establish the animal model of depression. Forced swimming test and immunohistochemistry method were utilized to investigate the animal behavior and kalirin-7 expression in the hippocampus, respectively. Results Compared with the control group, the CRS mice displayed depression-like behaviors, including a significant reduction in body weight, a significant increase in immobility time in forced swimming test, and a dramatic decrease in kalirin-7 expression in the hippocampus. However, administration of estrogen attenuated the CRS-induced negative behaviors, and simultaneously increased kalirin-7 expression. Conclusion Estrogen replacement therapy (ERT) could prevent CRS-induced depression-like behaviors in female ICR mice. Besides, kalirin-7 also plays a role in preventing CRS-induced depression-like behaviors.
文摘Objective: To observe therapeutic effect of acupuncture for regulating the liver on depressive neurosis. Methods: In a multi-center randomized controlled trial, 440 patients were divided into 3 groups: Acupuncture group for regulating the liver (Acup., 176 cases) was treated by acupuncture at Siguan Points, i.e. bilateral Hegu (LI 4) and Taichong (LR 3), Baihui (GV 20) and Yintang (EX-HN3) plus ear-acupuncture, Prozac group (P., 176 cases) by oral administration of Prozac, and Non-acupoint needling group (NAN, 88 cases) by acupuncture at non-acupoints as acupuncture placebo. Self-rating Depression Scale (SDS) was examined before treatment, and one month, two and three months after treatment respectively to evaluate therapeutic effect, and Rating Scale for Side Effects (SERS) was used to evaluate the safety. Results: After one month of treatment, SDS scores in Acup. Group were significantly lower than that in P. Group (P<0.05) and than that in NAN Group (P<0.01), and SDS scores in P. Group were lower than that in NAN Group (P<0.05), showing the SDS scores in Acup. Group <P. Group <NAN Group. After 2 months of treatment, SDS scores in Acup. Group were also significantly lower than that in P. Group (P<0.01) and than that in NAN Group (P<0.01), and SDS scores in P. Group were also lower than that in NAN Group (P<0.05), showing the SDS scores in Acup. Group <P. Group <NAN Group. After 3 months of treatment, SDS scores in Acup. Group were also significantly lower than that in P. Group (P<0.01) and than that in NAN Group (P<0.01), and SDS scores in P. Group were also lower than that in NAN Group (P<0.01), showing the SDS score in Acup. Group <P. Group <NAN Group. After treatment, SERS scores were 0.16±0.95, 6.51±5.09 and 0.23±1.36 in Acup. Group, P. Group and NAN Group respectively. A significant difference existed between Acup. Group and P. Group (P<0.05), but no significant difference between Acup. Group and NAN Group (P>0.05), showing the SERS scores in Acup. Group <NAN Group <P. Group. No side effect was found in Acup. and NAN groups. Conclusion: The therapeutic effect of acupuncture on depressive neurosis is better than or similar to that of Prozac but with less side effect.