Objective:To explore the effect and mechanism of Dahuang Zhechong Pill(DHZCP)on liver fibrosis.Methods:Liver fibrosis cell model was induced by transforming growth factor-β(TGF-β)in hepatic stellate cells(HSC-T6).DH...Objective:To explore the effect and mechanism of Dahuang Zhechong Pill(DHZCP)on liver fibrosis.Methods:Liver fibrosis cell model was induced by transforming growth factor-β(TGF-β)in hepatic stellate cells(HSC-T6).DHZCP medicated serum(DMS)was prepared in rats.HSC-T6 cells were divided into the control(15%normal blank serum culture),TGF-β(15%normal blank serum+5 ng/mL TGF-β),DHZCP(15%DMS+5 ng/mL TGF-β),DHZCP+PDTC[15%DMS+4 mmol/L ammonium pyrrolidine dithiocarbamate(PDTC)+5 ng/mL TGF-β],and PDTC groups(4 mmol/L PDTC+5 ng/mL TGF-β).Cell activity was detected by cell counting kit 8 and levels of tumor necrosis factor-α(TNF-α),interleukin(IL)-1β,IL-6,aspartate aminotransferase(AST)and alanine aminotransferase(ALT)in the cell supernatant were determined by enzymelinked immunosorbnent assay.Western blot was used to measure the expressions of p38 mitogen-activated protein kinase/nuclear factor kappa B/transforming growth factor-β1(p38 MAPK/NF-κB/TGF-β1)pathway related proteins,and the localization and expressions of these proteins were observed by immunofluorescence staining.Results:DHZCP improved the viability of cells damaged by TGF-βand reduced inflammatory cytokines and ALT and AST levels in the supernatant of HSC-T6 cells induced with TGF-β(P<0.05 or P<0.01).Compared with the TGF-βgroup,NF-κB p65 levels in the DHZCP group were decreased(P<0.05).p38 MAPK and NF-κB p65 levels in the DHZCP+PDTC were also reduced(P<O.01).Compared with the TGF-βgroup,the protein expression of Smad2 showed a downward trend in the DHZCP,DHZCP+PDTC,and PDTC groups(all P<0.01),and the decreasing trend of Samd3 was statistically significant only in DHZCP+PDTC group(P<0.01),whereas Smad7 was increased(P<0.05 or P<0.01).Conclusion:DHZCP can inhibit the process of HSC-T6 cell fibrosis by down-regulating the expression of p38 MAPK/NF-κB/TGF-β1 pathway.展开更多
目的:探讨补脾益气方对哮喘模型大鼠肺组织核因子Kappa B(NF-κB)抑制剂的激酶β(the kinase of nuclear fac-tor-kappa B inhibitor β,IKKβ)的调控作用及对白介素8(IL-8)含量的影响。方法:SPF级雄性Wistar大鼠随机分为对照组(A)、哮...目的:探讨补脾益气方对哮喘模型大鼠肺组织核因子Kappa B(NF-κB)抑制剂的激酶β(the kinase of nuclear fac-tor-kappa B inhibitor β,IKKβ)的调控作用及对白介素8(IL-8)含量的影响。方法:SPF级雄性Wistar大鼠随机分为对照组(A)、哮喘组(B)、补脾益气方治疗组(C)。卵蛋白致敏和激发复制出哮喘模型,按照10 g.kg-1体重给予C组大鼠中药ig 1次/d,共21d。采用逆转录聚合酶链反应(RT-PCR)检测肺组织IKKβ的mRNA表达水平,采用免疫组化检测肺组织IKKβ的蛋白表达水平,采用酶联免疫吸附法(ELISA)测定支气管肺泡灌洗液IL-8的含量。结果:①肺组织IKKβ的mRNA的表达:B组显著高于A组(P<0.01);C组显著低于B组(P<0.05)。②肺组织IKKβ的蛋白表达水平:B组显著高于A组(P<0.01);C组显著低于B组(P<0.01)。③肺泡灌洗液IL-8含量:B组显著高于A组(P<0.01);C组显著低于B组(P<0.01)。结论:哮喘组大鼠肺组织IKKβmRNA和蛋白的表达水平显著增强,补脾益气方能有效抑制其表达,降低肺泡灌洗液IL-8含量,证明补脾益气方能有效抑制IKKβ信号转导的途径。展开更多
基金Supported by the National Natural Science Foundation of China(No.82004251)Sichuan Science and Technology Program(No.2022NSFSC1366)+2 种基金China Postdoctoral Science Foundation(No.2022MD723716)the"Xinglin Scholars"Disciplinary Talent Research Improvement Plan–Youth Fund Talent Program(No.QJRC2022047)the Post Doctoral Program of Xinglin Scholar Discipline Talent Scientific Research Promotion Program of Chengdu University of Traditional Chinese Medicine(No.BSH2021029)。
文摘Objective:To explore the effect and mechanism of Dahuang Zhechong Pill(DHZCP)on liver fibrosis.Methods:Liver fibrosis cell model was induced by transforming growth factor-β(TGF-β)in hepatic stellate cells(HSC-T6).DHZCP medicated serum(DMS)was prepared in rats.HSC-T6 cells were divided into the control(15%normal blank serum culture),TGF-β(15%normal blank serum+5 ng/mL TGF-β),DHZCP(15%DMS+5 ng/mL TGF-β),DHZCP+PDTC[15%DMS+4 mmol/L ammonium pyrrolidine dithiocarbamate(PDTC)+5 ng/mL TGF-β],and PDTC groups(4 mmol/L PDTC+5 ng/mL TGF-β).Cell activity was detected by cell counting kit 8 and levels of tumor necrosis factor-α(TNF-α),interleukin(IL)-1β,IL-6,aspartate aminotransferase(AST)and alanine aminotransferase(ALT)in the cell supernatant were determined by enzymelinked immunosorbnent assay.Western blot was used to measure the expressions of p38 mitogen-activated protein kinase/nuclear factor kappa B/transforming growth factor-β1(p38 MAPK/NF-κB/TGF-β1)pathway related proteins,and the localization and expressions of these proteins were observed by immunofluorescence staining.Results:DHZCP improved the viability of cells damaged by TGF-βand reduced inflammatory cytokines and ALT and AST levels in the supernatant of HSC-T6 cells induced with TGF-β(P<0.05 or P<0.01).Compared with the TGF-βgroup,NF-κB p65 levels in the DHZCP group were decreased(P<0.05).p38 MAPK and NF-κB p65 levels in the DHZCP+PDTC were also reduced(P<O.01).Compared with the TGF-βgroup,the protein expression of Smad2 showed a downward trend in the DHZCP,DHZCP+PDTC,and PDTC groups(all P<0.01),and the decreasing trend of Samd3 was statistically significant only in DHZCP+PDTC group(P<0.01),whereas Smad7 was increased(P<0.05 or P<0.01).Conclusion:DHZCP can inhibit the process of HSC-T6 cell fibrosis by down-regulating the expression of p38 MAPK/NF-κB/TGF-β1 pathway.
