Objective: To establish and evaluate a mouse model of bronchial asthma with Yin deficiency syndrome. Methods: The mouse model of bronchial asthma with Yin deficiency syndrome was established by the treatment with inje...Objective: To establish and evaluate a mouse model of bronchial asthma with Yin deficiency syndrome. Methods: The mouse model of bronchial asthma with Yin deficiency syndrome was established by the treatment with injecting ovalbumin(OVA) two times to sensitize, inhaling OVA 14 times to stimulate, and using thyroxin through lavage during late stimulation. This model was evaluated through body weight, asthmatic behaviors, respiratory function, autonomous activity, lung pathology, and pulmonary fluid clearance. Results: OVA combined with thyroxin was an appropriate method to induce the mouse model with increased food and water intake, autonomous activity, asthmatic behaviors score, and respiratory rate, decreased body weight, tidal volume, and wet/dry ratio of lung, and changed with pathology of lung tissue. The changes of the above mentioned parameters indicated that the model was the bronchial asthma with Yin deficiency syndrome. Conclusion: The OVA combined with thyroxin is a good pattern to establish a mouse model of bronchial asthma with Yin deficiency syndrome successfully, which can highly simulate the clinical symptoms of this disease.展开更多
Objective The function of Bcl-6 in T follicular helper(Tfh)cell maturation is indispensable,and Tfh cells play a pivotal role in asthma.This study investigated the impact of Bcl-6 on asthmatic traits.Methods The micro...Objective The function of Bcl-6 in T follicular helper(Tfh)cell maturation is indispensable,and Tfh cells play a pivotal role in asthma.This study investigated the impact of Bcl-6 on asthmatic traits.Methods The microscopic pathological alterations,airway resistance(AR),and lung compliance(LC)were determined in asthmatic mice and Bcl-6 interference mice.The surface molecular markers of Tfh cells and the Bcl-6 mRNA and protein expression were determined by flow cytometry,RT-qPCR,and Western blotting,respectively.The relationships between the Tfh cell ratio and the IgE and IgG1 concentrations in peripheral blood mononuclear cells(PBMCs)and bronchoalveolar lavage fluid(BALF)were determined.Results Asthmatic inflammatory changes were observed in the lung tissue and were attenuated by Bcl-6 siRNA and dexamethasone(DXM).Asthmatic mice exhibited an increased AR and a decreased LC,while Bcl-6 siRNA or DXM mitigated these changes.The percentages of Tfh cells and eosinophils were significantly increased in the asthmatic mice,and they significantly decreased after Bcl-6 inhibition or DXM treatment.RT-qPCR and Western blotting analyses revealed that the Bcl-6 expression level in PBMCs was significantly higher in asthmatic mice,and it decreased following Bcl-6 inhibition or DXM treatment.The IgE expression in the serum and BALF and the B cell expression in PBMCs exhibited a similar trend.In asthmatic mice,the ratio of Tfh cells in the peripheral blood showed a strong positive correlation with the IgE levels in the serum and BALF,but not with the IgG1 levels.Conclusion The amelioration of airway inflammation and airway hyper-responsiveness is achieved through Bcl-6 suppression,which effectively hinders Tfh cell differentiation,ultimately resulting in a concurrent reduction in IgE production.展开更多
目的探讨柴朴汤对哮喘小鼠支气管上皮细胞高迁移率族蛋白B1(HMGB1)、Toll样受体4(TLR4)、核因子-κB(NF-κB)及下游炎症介质单核细胞趋化蛋白-1(MCP-1)、白细胞介素-6(IL-6)的影响。方法将小鼠支气管上皮细胞分为对照组(Con组,空白血清...目的探讨柴朴汤对哮喘小鼠支气管上皮细胞高迁移率族蛋白B1(HMGB1)、Toll样受体4(TLR4)、核因子-κB(NF-κB)及下游炎症介质单核细胞趋化蛋白-1(MCP-1)、白细胞介素-6(IL-6)的影响。方法将小鼠支气管上皮细胞分为对照组(Con组,空白血清培养)、Model组(哮喘小鼠血清培养)和Chaipu组(柴朴汤药血清培养)。采用qRT-PCR和Western blotting检测小鼠支气管上皮细胞中HMGB1、TLR4、NF-κB、MCP-1、IL-6的mRNA及蛋白表达情况,ELISA法测定细胞培养液中MCP-1和IL-6的水平。结果与Con组相比,Model组小鼠支气管上皮细胞HMGB1、TLR4、NF-κB、MCP-1、IL-6表达均明显升高(P<0.05);Model组细胞培养液中MCP-1、IL-6也显著升高(P<0.05)。与Model组相比,Chaipu组小鼠支气管上皮细胞HMGB1、TLR4、MCP-1、IL-6 mRNA和蛋白表达降低,NF-κB m RNA表达亦降低(P<0.05);Chaipu组细胞培养液中MCP-1、IL-6也显著降低(P<0.05)。结论柴朴汤可下调哮喘血清诱导的炎症因子的表达,可能与其抑制HMGB1/TLR4/NF-κB炎症通路有关。展开更多
基金supported by the National Natural Science Fund(the regional project81460668)+1 种基金the Natural Science Foundation of Gansu Province(1310RJZ A086)the open fund project of Key Laboratory of Pharmacology and Toxicology for Traditional Chinese Medicine of Gansu Province(ZDSYS-KJ-2013-008)
文摘Objective: To establish and evaluate a mouse model of bronchial asthma with Yin deficiency syndrome. Methods: The mouse model of bronchial asthma with Yin deficiency syndrome was established by the treatment with injecting ovalbumin(OVA) two times to sensitize, inhaling OVA 14 times to stimulate, and using thyroxin through lavage during late stimulation. This model was evaluated through body weight, asthmatic behaviors, respiratory function, autonomous activity, lung pathology, and pulmonary fluid clearance. Results: OVA combined with thyroxin was an appropriate method to induce the mouse model with increased food and water intake, autonomous activity, asthmatic behaviors score, and respiratory rate, decreased body weight, tidal volume, and wet/dry ratio of lung, and changed with pathology of lung tissue. The changes of the above mentioned parameters indicated that the model was the bronchial asthma with Yin deficiency syndrome. Conclusion: The OVA combined with thyroxin is a good pattern to establish a mouse model of bronchial asthma with Yin deficiency syndrome successfully, which can highly simulate the clinical symptoms of this disease.
基金supported by the National Natural Science Foundation of China(No.81400020)a Scientific Research Project of the Wuhan Municipal Health and Family Planning Commission(No.WX19C30).
文摘Objective The function of Bcl-6 in T follicular helper(Tfh)cell maturation is indispensable,and Tfh cells play a pivotal role in asthma.This study investigated the impact of Bcl-6 on asthmatic traits.Methods The microscopic pathological alterations,airway resistance(AR),and lung compliance(LC)were determined in asthmatic mice and Bcl-6 interference mice.The surface molecular markers of Tfh cells and the Bcl-6 mRNA and protein expression were determined by flow cytometry,RT-qPCR,and Western blotting,respectively.The relationships between the Tfh cell ratio and the IgE and IgG1 concentrations in peripheral blood mononuclear cells(PBMCs)and bronchoalveolar lavage fluid(BALF)were determined.Results Asthmatic inflammatory changes were observed in the lung tissue and were attenuated by Bcl-6 siRNA and dexamethasone(DXM).Asthmatic mice exhibited an increased AR and a decreased LC,while Bcl-6 siRNA or DXM mitigated these changes.The percentages of Tfh cells and eosinophils were significantly increased in the asthmatic mice,and they significantly decreased after Bcl-6 inhibition or DXM treatment.RT-qPCR and Western blotting analyses revealed that the Bcl-6 expression level in PBMCs was significantly higher in asthmatic mice,and it decreased following Bcl-6 inhibition or DXM treatment.The IgE expression in the serum and BALF and the B cell expression in PBMCs exhibited a similar trend.In asthmatic mice,the ratio of Tfh cells in the peripheral blood showed a strong positive correlation with the IgE levels in the serum and BALF,but not with the IgG1 levels.Conclusion The amelioration of airway inflammation and airway hyper-responsiveness is achieved through Bcl-6 suppression,which effectively hinders Tfh cell differentiation,ultimately resulting in a concurrent reduction in IgE production.
文摘目的探讨柴朴汤对哮喘小鼠支气管上皮细胞高迁移率族蛋白B1(HMGB1)、Toll样受体4(TLR4)、核因子-κB(NF-κB)及下游炎症介质单核细胞趋化蛋白-1(MCP-1)、白细胞介素-6(IL-6)的影响。方法将小鼠支气管上皮细胞分为对照组(Con组,空白血清培养)、Model组(哮喘小鼠血清培养)和Chaipu组(柴朴汤药血清培养)。采用qRT-PCR和Western blotting检测小鼠支气管上皮细胞中HMGB1、TLR4、NF-κB、MCP-1、IL-6的mRNA及蛋白表达情况,ELISA法测定细胞培养液中MCP-1和IL-6的水平。结果与Con组相比,Model组小鼠支气管上皮细胞HMGB1、TLR4、NF-κB、MCP-1、IL-6表达均明显升高(P<0.05);Model组细胞培养液中MCP-1、IL-6也显著升高(P<0.05)。与Model组相比,Chaipu组小鼠支气管上皮细胞HMGB1、TLR4、MCP-1、IL-6 mRNA和蛋白表达降低,NF-κB m RNA表达亦降低(P<0.05);Chaipu组细胞培养液中MCP-1、IL-6也显著降低(P<0.05)。结论柴朴汤可下调哮喘血清诱导的炎症因子的表达,可能与其抑制HMGB1/TLR4/NF-κB炎症通路有关。
