Objective To investigate the antidepressant effects of Yuanzhi(Polygalae Radix;PR)aqueous extract on chronic unpredictable mild stress(CUMS)-induced depression rat models and the underlying mechanisms.Methods A total ...Objective To investigate the antidepressant effects of Yuanzhi(Polygalae Radix;PR)aqueous extract on chronic unpredictable mild stress(CUMS)-induced depression rat models and the underlying mechanisms.Methods A total of 40 male Sprague Dawley(SD)rats were randomly divided into control;model;low dose of PR(PR-L;0.5 g/kg);high dose of PR(PR-H;1 g/kg);and fluoxetine(10 mg/kg)groups;with 8 rats in each group.Except for the rats in control group;those in the other four groups underwent CUMS-induced depression modeling.PR and fluoxetine were administered intragastrically once daily;30 min prior to the CUMS procedure;for 14 consecu-tive days until the behavioral tests were performed.After CUMS modeling;the sucrose prefer-ence test(SPT);open field test(OFT);novelty-suppressed feeding test(NSFT);forced swim test(FST);and tail suspension test(TST)were employed to assess the pharmacological ef-fects of PR on the mitigation of depressive-like behaviors in rat models.Additionally;the en-zyme-linked immunosorbent assay(ELISA)was utilized to quantify the serum levels of tumor necrosis factor(TNF)-α;interleukin(IL)-6;and IL-1βin the rats.Western blot analysis was al-so conducted to evaluate the protein expression levels of nuclear factor kappa-B(NF-κB);in-ducible nitric oxide synthase(iNOS);cyclooxygenase-2(COX-2);nucleotide-binding oligomerization domain(NOD)-like receptor family pyrin domain containing 3(NLRP3);apoptosis-associated speck-like protein containing caspase recruitment domain(ASC);and caspase-1 in the hippocampal tissues of the rats.Immunofluorescence staining was per-formed to observe the morphological changes in ionized calcium-binding adapter molecule 1 positive(Iba-1+)cells in the dentate gyrus(DG)of rats with CUMS-induced depression.Results(i)Treatment with PR-H and fluoxetine resulted in significant enhancements in both the total distance and time the rats moved during tests(P<0.01 and P<0.05;respectively).Post-administration of PR-H and fluoxetine also led to statistically significant increase in su-crose preference among rats(P<0.05).Besides;PR-L;PR-H;and fluoxetine treatment markedly decreased the latency of ingestion(P<0.05;P<0.05;and P<0.01;respectively).As observed from the FST;PR-L;PR-H;and fluoxetine presented antidepressant effects on rats with CUMS-induced depression;leading to the reduction in time of their immobility(P<0.05;P<0.01;and P<0.01;respectively).The results of TST indicated reduced immobility time in rats receiving PR-H and fluoxetine treatment as well(P<0.01).(ii)Rats in model group showed an increase in the levels of Iba-1+microglia in their left and right brains in compari-son with control group(P<0.01).However;such increase was negated post PR treatment(P<0.01).Treatment with PR-L;PR-H;and fluoxetine considerably reduced the levels of inflam-matory factors(TNF-α;IL-1β;and IL-6;P<0.01).In addition;treatment of PR-L and PR-H ef-fectively counteracted the elevated levels of NLRP3;ASC;and caspase-1;and markedly down-regulated the expression levels of phosphorylated p65(p-p65);COX-2;and iNOS in rats’hip-pocampus(P<0.01).Conclusion Collectively;these findings indicate that PR exerts an antidepressant effect on rats with CUMS-induced depression partially through the modulation of the NLRP3 and NF-κB signaling pathways.展开更多
[Objectives]To explore the effects of Polygona fallax Hemsl water extract on gastrointestinal motility in normal mice and gastric motility disorder model mice and approximate mechanism.[Methods]Using normal mice and m...[Objectives]To explore the effects of Polygona fallax Hemsl water extract on gastrointestinal motility in normal mice and gastric motility disorder model mice and approximate mechanism.[Methods]Using normal mice and mice with gastric motility disorders(modeled with atropine),the effects of different mass concentration groups of P.fallax Hemsl water extract(0.125,0.250,0.500 g/mL)and domperidone groups on gastric residual rate,small intestine propulsion rate,serum motilin(MLT),vasoactive intestinal peptide(VIP),and tissue morphology were studied.[Results]There was a highly significant difference(P<0.01)in the small intestine propulsion rate of liquid in normal mice among the different concentration groups of P.fallax Hemsl water extract compared to the blank group.The small intestine propulsion rate and gastric residue rate of semi-solid paste were statistically significant compared to the blank group(P<0.05).Among them,there was a highly significant difference between the high concentration group(67.75%±7.65%,46.5%±10.62%)and the medium concentration group(60.90%±5.87%,59.27%±7.82%)(P<0.01).There was statistical significance in normal mouse serum MLT content in the high concentration group(P<0.05).There was no effect on serum VIP levels in normal mice;no effect on the morphology of stomach and intestinal tissues of normal mice.The small intestine propulsion rate and gastric residue rate of liquid and semi-solid paste in mice with gastric motility disorders were statistically significant compared to the atropine group,with extremely significant differences(P<0.01).[Conclusions]P.fallax Hemsl water extract has a promoting effect on gastrointestinal motility.One of the specific mechanisms by which P.fallax Hemsl promotes gastrointestinal motility in normal mice may be related to the content of MLT in mouse serum.The mechanism of action in atropine induced gastric paresis mice may be related to the reactivation of M receptors,and the action mechanism of P.fallax Hemsl does not change the original histological basis.It can be inferred that P.fallax Hemsl water extract has a synergistic effect on promoting gastrointestinal motility through other mechanisms,but it is not fully understood and further in-depth research is needed.展开更多
目的对“远志-酸枣仁”中潜在作用于钙/钙调蛋白依赖性蛋白激酶Ⅱ(calcium/calmodulin-dependent protein kinaseⅡ,CaMKⅡ)靶点的活性物质进行筛选,阐明其药效物质基础。方法采用以药效团为基础的虚拟筛选手段,通过收集已出版文献中报...目的对“远志-酸枣仁”中潜在作用于钙/钙调蛋白依赖性蛋白激酶Ⅱ(calcium/calmodulin-dependent protein kinaseⅡ,CaMKⅡ)靶点的活性物质进行筛选,阐明其药效物质基础。方法采用以药效团为基础的虚拟筛选手段,通过收集已出版文献中报道的具有调控CaMKⅡ作用的化合物信息,建立基于CaMKⅡ配体的HipHop药效团模型,收集文献中报道的“远志-酸枣仁”中的成分并建立化合物库,对“远志-酸枣仁”中的成分与药效团进行匹配,随后使用分子模拟对接手段对匹配到的小分子化合物与CaMKⅡ靶点(PDB ID:2V7O)进行对接,研究潜在活性单体与CaMKⅡ的作用。用戊四唑(pentylenetetrazol,PTZ)点燃模型对活性单体细叶远志苷A(39)的抗癫痫作用进行测定,并对CaMKⅡ水平的调控作用进行评价。结论通过文献检索建立包含“远志-酸枣仁”中109种化学成分的化合物库,通过测试集验证确定将药效团03用于对“远志-酸枣仁”化合物库的虚拟筛选,对匹配度排前6位的单体通过分子模拟对接分析其与CaMKⅡ的作用情况,并用抗癫痫动物模型对单体的活性进行评价,化合物39能够在中高剂量下延长PTZ致癫痫发作的潜伏时间,改善PTZ所致的焦虑抑郁样行为,改善PTZ诱导的癫痫发作后脑内尼氏体丢失,提升PTZ所致的CaMKⅡ表达水平降低,提升海马CA1、CA3区及颞叶皮层内CaMKⅡ免疫阳性细胞数量并进一步对nAChR4受体水平进行调控。表明基于虚拟筛选与活性评价手段探讨“远志-酸枣仁”中CaMKⅡ调控作用的成分具有一定的准确性。展开更多
基金International Cooperative Project of Traditional Chinese Medicine(GZYYG2020023)CAMS Innovation Fund for Medical Sciences(CIFMS)Grant(2021-I2M-1-034)Key Research Project of Hunan Province(222SK2018).
文摘Objective To investigate the antidepressant effects of Yuanzhi(Polygalae Radix;PR)aqueous extract on chronic unpredictable mild stress(CUMS)-induced depression rat models and the underlying mechanisms.Methods A total of 40 male Sprague Dawley(SD)rats were randomly divided into control;model;low dose of PR(PR-L;0.5 g/kg);high dose of PR(PR-H;1 g/kg);and fluoxetine(10 mg/kg)groups;with 8 rats in each group.Except for the rats in control group;those in the other four groups underwent CUMS-induced depression modeling.PR and fluoxetine were administered intragastrically once daily;30 min prior to the CUMS procedure;for 14 consecu-tive days until the behavioral tests were performed.After CUMS modeling;the sucrose prefer-ence test(SPT);open field test(OFT);novelty-suppressed feeding test(NSFT);forced swim test(FST);and tail suspension test(TST)were employed to assess the pharmacological ef-fects of PR on the mitigation of depressive-like behaviors in rat models.Additionally;the en-zyme-linked immunosorbent assay(ELISA)was utilized to quantify the serum levels of tumor necrosis factor(TNF)-α;interleukin(IL)-6;and IL-1βin the rats.Western blot analysis was al-so conducted to evaluate the protein expression levels of nuclear factor kappa-B(NF-κB);in-ducible nitric oxide synthase(iNOS);cyclooxygenase-2(COX-2);nucleotide-binding oligomerization domain(NOD)-like receptor family pyrin domain containing 3(NLRP3);apoptosis-associated speck-like protein containing caspase recruitment domain(ASC);and caspase-1 in the hippocampal tissues of the rats.Immunofluorescence staining was per-formed to observe the morphological changes in ionized calcium-binding adapter molecule 1 positive(Iba-1+)cells in the dentate gyrus(DG)of rats with CUMS-induced depression.Results(i)Treatment with PR-H and fluoxetine resulted in significant enhancements in both the total distance and time the rats moved during tests(P<0.01 and P<0.05;respectively).Post-administration of PR-H and fluoxetine also led to statistically significant increase in su-crose preference among rats(P<0.05).Besides;PR-L;PR-H;and fluoxetine treatment markedly decreased the latency of ingestion(P<0.05;P<0.05;and P<0.01;respectively).As observed from the FST;PR-L;PR-H;and fluoxetine presented antidepressant effects on rats with CUMS-induced depression;leading to the reduction in time of their immobility(P<0.05;P<0.01;and P<0.01;respectively).The results of TST indicated reduced immobility time in rats receiving PR-H and fluoxetine treatment as well(P<0.01).(ii)Rats in model group showed an increase in the levels of Iba-1+microglia in their left and right brains in compari-son with control group(P<0.01).However;such increase was negated post PR treatment(P<0.01).Treatment with PR-L;PR-H;and fluoxetine considerably reduced the levels of inflam-matory factors(TNF-α;IL-1β;and IL-6;P<0.01).In addition;treatment of PR-L and PR-H ef-fectively counteracted the elevated levels of NLRP3;ASC;and caspase-1;and markedly down-regulated the expression levels of phosphorylated p65(p-p65);COX-2;and iNOS in rats’hip-pocampus(P<0.01).Conclusion Collectively;these findings indicate that PR exerts an antidepressant effect on rats with CUMS-induced depression partially through the modulation of the NLRP3 and NF-κB signaling pathways.
文摘目的建立远志薄层色谱(thin-layer chromatography,TLC)及超高效液相色谱(ultra-high performance liquid chromatography,UHPLC)特征图谱,并分析远志全根、根皮和木心间化学成分差异,为远志质量评价提供参考。方法以3,6’-二芥子酰基蔗糖、细叶远志苷A和远志皂苷B为指标成分建立TLC图谱;用UHPLC法建立远志特征图谱,结合热图聚类分析、主成分分析(principal component analysis,PCA)和正交偏最小二乘法判别分析(partial least squares discriminant analysis,OPLS-DA)评价多批远志全根、根皮和木心之间的差异性。结果TLC图谱斑点清晰、分离度较好;UHPLC特征图谱共标定28个共有峰,指认了其中的7个特征峰,13批次远志特征图谱与对照图谱相似度均大于0.9,批次间质量较为稳定;TLC和UHPLC特征图谱显示远志全根、根皮和木心化学组成一致,未发现特异成分,热图聚类分析和PCA显示远志全根与根皮中各成分峰面积接近,OPLSDA筛选出10个变量投影重要性(variable important in projection,VIP)值大于1的差异性成分。结论所建立的TLC及UHPLC特征图谱简便、准确、稳定,展开系统和提取溶剂均使用低毒试剂,符合绿色化学理念,适用于远志的质量评价,从化学分析角度说明木心的存在对远志整体化学成分影响较小。
基金2022 National College Student Innovation and Entrepreneurship Training Program(202210599004).
文摘[Objectives]To explore the effects of Polygona fallax Hemsl water extract on gastrointestinal motility in normal mice and gastric motility disorder model mice and approximate mechanism.[Methods]Using normal mice and mice with gastric motility disorders(modeled with atropine),the effects of different mass concentration groups of P.fallax Hemsl water extract(0.125,0.250,0.500 g/mL)and domperidone groups on gastric residual rate,small intestine propulsion rate,serum motilin(MLT),vasoactive intestinal peptide(VIP),and tissue morphology were studied.[Results]There was a highly significant difference(P<0.01)in the small intestine propulsion rate of liquid in normal mice among the different concentration groups of P.fallax Hemsl water extract compared to the blank group.The small intestine propulsion rate and gastric residue rate of semi-solid paste were statistically significant compared to the blank group(P<0.05).Among them,there was a highly significant difference between the high concentration group(67.75%±7.65%,46.5%±10.62%)and the medium concentration group(60.90%±5.87%,59.27%±7.82%)(P<0.01).There was statistical significance in normal mouse serum MLT content in the high concentration group(P<0.05).There was no effect on serum VIP levels in normal mice;no effect on the morphology of stomach and intestinal tissues of normal mice.The small intestine propulsion rate and gastric residue rate of liquid and semi-solid paste in mice with gastric motility disorders were statistically significant compared to the atropine group,with extremely significant differences(P<0.01).[Conclusions]P.fallax Hemsl water extract has a promoting effect on gastrointestinal motility.One of the specific mechanisms by which P.fallax Hemsl promotes gastrointestinal motility in normal mice may be related to the content of MLT in mouse serum.The mechanism of action in atropine induced gastric paresis mice may be related to the reactivation of M receptors,and the action mechanism of P.fallax Hemsl does not change the original histological basis.It can be inferred that P.fallax Hemsl water extract has a synergistic effect on promoting gastrointestinal motility through other mechanisms,but it is not fully understood and further in-depth research is needed.
文摘目的对“远志-酸枣仁”中潜在作用于钙/钙调蛋白依赖性蛋白激酶Ⅱ(calcium/calmodulin-dependent protein kinaseⅡ,CaMKⅡ)靶点的活性物质进行筛选,阐明其药效物质基础。方法采用以药效团为基础的虚拟筛选手段,通过收集已出版文献中报道的具有调控CaMKⅡ作用的化合物信息,建立基于CaMKⅡ配体的HipHop药效团模型,收集文献中报道的“远志-酸枣仁”中的成分并建立化合物库,对“远志-酸枣仁”中的成分与药效团进行匹配,随后使用分子模拟对接手段对匹配到的小分子化合物与CaMKⅡ靶点(PDB ID:2V7O)进行对接,研究潜在活性单体与CaMKⅡ的作用。用戊四唑(pentylenetetrazol,PTZ)点燃模型对活性单体细叶远志苷A(39)的抗癫痫作用进行测定,并对CaMKⅡ水平的调控作用进行评价。结论通过文献检索建立包含“远志-酸枣仁”中109种化学成分的化合物库,通过测试集验证确定将药效团03用于对“远志-酸枣仁”化合物库的虚拟筛选,对匹配度排前6位的单体通过分子模拟对接分析其与CaMKⅡ的作用情况,并用抗癫痫动物模型对单体的活性进行评价,化合物39能够在中高剂量下延长PTZ致癫痫发作的潜伏时间,改善PTZ所致的焦虑抑郁样行为,改善PTZ诱导的癫痫发作后脑内尼氏体丢失,提升PTZ所致的CaMKⅡ表达水平降低,提升海马CA1、CA3区及颞叶皮层内CaMKⅡ免疫阳性细胞数量并进一步对nAChR4受体水平进行调控。表明基于虚拟筛选与活性评价手段探讨“远志-酸枣仁”中CaMKⅡ调控作用的成分具有一定的准确性。
