Background:Liver injury caused by sepsis seriously impairs the normal physiology of the liver.Wedelactone(WED)has an obvious anti-inflammatory effect against liver damage caused by various factors.Nevertheless,further...Background:Liver injury caused by sepsis seriously impairs the normal physiology of the liver.Wedelactone(WED)has an obvious anti-inflammatory effect against liver damage caused by various factors.Nevertheless,further research is needed to determine if WED might mitigate acute liver damage linked to sepsis by influencing macrophage polarization.Methods:We first assessed the effect of WED on lipopolysaccharides-triggered liver injury by biochemistry assay and tissue staining.Inflammatory factors were assessed using the ELISA kits.The expression of Cluster of Differentiation 86(CD86)and Cluster of Differentiation 206(CD206)was measured by immunofluorescence assay.The protein levels of inducible nitric oxide sythase(iNOS),Arginase 1(Arg-1),phosphatidylinositol 3-kinase(PI3K),protein kinase B(AKT),PI3K phosphorylation(p-PI3K),AKT phosphorylation(p-AKT),inhibitor of kappa B kinase(IKK),inhibitor of kappa B(IκB),and nuclear factor kappa-B(NF-κB)p65 were quantified by western blot analysis.Results:WED decreased the level of alanine aminotransferase(ALT),aspartate aminotransferase(AST),alkaline phosphatase(ALP)and malondialdehyde,and increased the activity of superoxide dismutase(SOD)and glutathione peroxidase(GSH-PX).Moreover,WED exerted effective anti-inflammatory effects by decreasing the level of Tumor necrosis factor-α(TNF-α)and Interleukin 6(IL-6)and increasing the level of Interleukin 10(IL-10)in serum and cells.WED not only decreased CD86 and iNOS expression but also increased CD206 and Arg-1 expression.WED also downregulated the increased expression of PI3K,AKT,p-PI3K,p-AKT,IKK,and NF-κB p65 induced by lipopolysaccharides,while up-regulated the decreased expression of IκB.Besides,LY294002 with WED decreased the expression of protein PI3K,AKT,p-PI3K,p-AKT,IKK and NF-κB p65,and raised the expression of IκBα.Conclusion:Wedelolactone could attenuate sepsis-associated acute liver injury,and its mechanism may be associated with balancing pro-inflammatory and anti-inflammatory by the regulation of M1/M2 macrophage polarization via the PI3K/AKT/NF-κB signaling pathway.展开更多
背景与目的:蛋白酪氨酸磷酸酶基因(phosphatase and tensin homolog deleted on chromosome ten,PTEN)与表皮生长因子受体(epidermal growth factor receptor,EGFR)信号途径的下游因子丝-苏氨酸激酶AKT、核因子-кB(nuclear factor-kapp...背景与目的:蛋白酪氨酸磷酸酶基因(phosphatase and tensin homolog deleted on chromosome ten,PTEN)与表皮生长因子受体(epidermal growth factor receptor,EGFR)信号途径的下游因子丝-苏氨酸激酶AKT、核因子-кB(nuclear factor-kappa B,NF-кB)以及信号转导子和转录激活子-3(signal transducer and activator of transcription-3,STAT3)与恶性肿瘤的发生、增殖与凋亡过程关系密切。本研究探讨AKT、NF-кB及STAT3在有淋巴结转移及雌激素受体阳性的乳腺癌组织中的活化情况及其与患者预后的关系。方法:免疫组化法检测130例雌激素受体阳性和有腋窝淋巴结转移的乳腺癌患者肿瘤组织中磷酸化AKT、NF-кB及STAT3的表达,以反映三者在肿瘤组织中的活化状态。同时检测这些组织中EGFR、PTEN、Ki67及HER-2的表达。结果:高活化状态的AKT(p-AKT)和NF-кB(p-NF-кB)与HER-2过度表达显著相关(分别P=0.023和P=0.017),并随着肿瘤组织学级别的升高表达显著增强(分别P=0.035和P=0.004)。而p-AKT、p-NF-кB和p-STAT3与肿瘤大小、EGFR的过度表达以及Ki67所反映的增殖状况无关,但p-AKT和p-NF-кB的表达呈显著正相关(r=0.43,P<0.001)而与PENT的表达呈显著负相关(r=-0.20,P=0.002)。单因素生存分析显示p-AKT和p-NF-кB在肿瘤组织中过度表达的患者生存期显著缩短(分别P=0.005和P=0.003),而且p-NF-кB表达增加也预示患者较高的复发或转移的可能性(P=0.006)。Cox分析发现,p-AKT和p-NF-кB的过度表达与患者总生存期(OS)(分别P=0.017和P=0.008)及患者无病生存期(DFS)(分别P=0.005和P=0.012)缩短显著相关,但p-STAT3的表达与OS和DFS无相关性(分别P=0.332和P=0.237)。结论:AKT和NF-кB在乳腺癌组织中的活化与肿瘤的发展显著相关,在有腋窝淋巴结转移及ER阳性的癌组织中p-AKT和p-NF-кB过度表达是乳腺癌患者预后不良的判断因子之一。展开更多
基金supported by the National Natural Science Foundation of China(No.81774190,81903832).
文摘Background:Liver injury caused by sepsis seriously impairs the normal physiology of the liver.Wedelactone(WED)has an obvious anti-inflammatory effect against liver damage caused by various factors.Nevertheless,further research is needed to determine if WED might mitigate acute liver damage linked to sepsis by influencing macrophage polarization.Methods:We first assessed the effect of WED on lipopolysaccharides-triggered liver injury by biochemistry assay and tissue staining.Inflammatory factors were assessed using the ELISA kits.The expression of Cluster of Differentiation 86(CD86)and Cluster of Differentiation 206(CD206)was measured by immunofluorescence assay.The protein levels of inducible nitric oxide sythase(iNOS),Arginase 1(Arg-1),phosphatidylinositol 3-kinase(PI3K),protein kinase B(AKT),PI3K phosphorylation(p-PI3K),AKT phosphorylation(p-AKT),inhibitor of kappa B kinase(IKK),inhibitor of kappa B(IκB),and nuclear factor kappa-B(NF-κB)p65 were quantified by western blot analysis.Results:WED decreased the level of alanine aminotransferase(ALT),aspartate aminotransferase(AST),alkaline phosphatase(ALP)and malondialdehyde,and increased the activity of superoxide dismutase(SOD)and glutathione peroxidase(GSH-PX).Moreover,WED exerted effective anti-inflammatory effects by decreasing the level of Tumor necrosis factor-α(TNF-α)and Interleukin 6(IL-6)and increasing the level of Interleukin 10(IL-10)in serum and cells.WED not only decreased CD86 and iNOS expression but also increased CD206 and Arg-1 expression.WED also downregulated the increased expression of PI3K,AKT,p-PI3K,p-AKT,IKK,and NF-κB p65 induced by lipopolysaccharides,while up-regulated the decreased expression of IκB.Besides,LY294002 with WED decreased the expression of protein PI3K,AKT,p-PI3K,p-AKT,IKK and NF-κB p65,and raised the expression of IκBα.Conclusion:Wedelolactone could attenuate sepsis-associated acute liver injury,and its mechanism may be associated with balancing pro-inflammatory and anti-inflammatory by the regulation of M1/M2 macrophage polarization via the PI3K/AKT/NF-κB signaling pathway.
文摘背景与目的:蛋白酪氨酸磷酸酶基因(phosphatase and tensin homolog deleted on chromosome ten,PTEN)与表皮生长因子受体(epidermal growth factor receptor,EGFR)信号途径的下游因子丝-苏氨酸激酶AKT、核因子-кB(nuclear factor-kappa B,NF-кB)以及信号转导子和转录激活子-3(signal transducer and activator of transcription-3,STAT3)与恶性肿瘤的发生、增殖与凋亡过程关系密切。本研究探讨AKT、NF-кB及STAT3在有淋巴结转移及雌激素受体阳性的乳腺癌组织中的活化情况及其与患者预后的关系。方法:免疫组化法检测130例雌激素受体阳性和有腋窝淋巴结转移的乳腺癌患者肿瘤组织中磷酸化AKT、NF-кB及STAT3的表达,以反映三者在肿瘤组织中的活化状态。同时检测这些组织中EGFR、PTEN、Ki67及HER-2的表达。结果:高活化状态的AKT(p-AKT)和NF-кB(p-NF-кB)与HER-2过度表达显著相关(分别P=0.023和P=0.017),并随着肿瘤组织学级别的升高表达显著增强(分别P=0.035和P=0.004)。而p-AKT、p-NF-кB和p-STAT3与肿瘤大小、EGFR的过度表达以及Ki67所反映的增殖状况无关,但p-AKT和p-NF-кB的表达呈显著正相关(r=0.43,P<0.001)而与PENT的表达呈显著负相关(r=-0.20,P=0.002)。单因素生存分析显示p-AKT和p-NF-кB在肿瘤组织中过度表达的患者生存期显著缩短(分别P=0.005和P=0.003),而且p-NF-кB表达增加也预示患者较高的复发或转移的可能性(P=0.006)。Cox分析发现,p-AKT和p-NF-кB的过度表达与患者总生存期(OS)(分别P=0.017和P=0.008)及患者无病生存期(DFS)(分别P=0.005和P=0.012)缩短显著相关,但p-STAT3的表达与OS和DFS无相关性(分别P=0.332和P=0.237)。结论:AKT和NF-кB在乳腺癌组织中的活化与肿瘤的发展显著相关,在有腋窝淋巴结转移及ER阳性的癌组织中p-AKT和p-NF-кB过度表达是乳腺癌患者预后不良的判断因子之一。
