BACKGROUND Previous studies have shown that the Shi-pi-xiao-ji(SPXJ)herbal decoction formula is effective in suppressing hepatocellular carcinoma(HCC),but the underlying mechanisms are not known.Therefore,this study i...BACKGROUND Previous studies have shown that the Shi-pi-xiao-ji(SPXJ)herbal decoction formula is effective in suppressing hepatocellular carcinoma(HCC),but the underlying mechanisms are not known.Therefore,this study investigated whether the antitumor effects of the SPXJ formula in treating HCC were mediated by acetyl-coA acetyltransferase 1(ACAT1)-regulated cellular stiffness.Through a series of experiments,we concluded that SPXJ inhibits the progression of HCC by upregulating the expression level of ACAT1,lowering the level of cholesterol in the cell membrane,and altering the cellular stiffness,which provides a new idea for the research of traditional Chinese medicine against HCC.AIM To investigate the anti-tumor effects of the SPXJ formula on the malignant progression of HCC.METHODS HCC cells were cultured in vitro with SPXJ-containing serum prepared by injecting SPXJ formula into wild-type mice.The apoptotic rate and proliferative,invasive,and migratory abilities of control and SPXJ-treated HCC cells were compared.Atomic force microscopy was used to determine the cell surface morphology and the Young’s modulus values of the control and SPXJ-treated HCC cells.Plasma membrane cholesterol levels in HCC cells were detected using the Amplex Red cholesterol detection kit.ACAT1 protein levels were estimated using western blotting.RESULTS Compared with the vehicle group,SPXJ serum considerably reduced proliferation of HCC cells,increased stiffness and apoptosis of HCC cells,inhibited migration and invasion of HCC cells,decreased plasma membrane cholesterol levels,and upregulated ACAT1 protein levels.However,treatment of HCC cells with the water-soluble cholesterol promoted proliferation,migration,and invasion of HCC cells as well as decreased cell stiffness and plasma membrane cholesterol levels,but did not alter the apoptotic rate and ACAT1 protein expression levels compared with the vehicle control.CONCLUSION SPXJ formula inhibited proliferation,invasion,and migration of HCC cells by decreasing plasma membrane cholesterol levels and altering cellular stiffness through upregulation of ACAT1 protein expression.展开更多
β-Glucans, mostly from oats, have been shown to reduce blood concentrations of total and LDL-cholesterol in animals and humans. After processing, spent brewer’s yeast, a by-product of the fermentation process, conta...β-Glucans, mostly from oats, have been shown to reduce blood concentrations of total and LDL-cholesterol in animals and humans. After processing, spent brewer’s yeast, a by-product of the fermentation process, contains 85% - 90% β-glucans. The purpose of this study was to evaluate the effect of yeast-derived β-glucan fiber on plasma lipids and early atherosclerosis development in hamsters consuming a semi-purified hypercholesterolemic diet (HCD). Animals were fed either the HCD or the HCD containing psyllium or β-glucan fiber from yeast for 12 weeks. Both the psyllium and β-glucan fiber from yeast showed significant decreases in plasma total cholesterol, non-HDL-C, triacylglycerol, and aortic fatty streak area when compared to the HCD. Also, the β-glucan fiber from yeast had significantly less aortic fatty streak area compared to the psyllium diet. Findings from this study show that while both β-glucan fiber from yeast and psyllium produced similar reductions in plasma lipid and lipoprotein concentrations, the β-glucan fiber from yeast prevented the development early atherosclerosis better than psyllium in the hamsters.展开更多
目的 探讨致动脉粥样硬化指数(atherogenic index of plasma,AIP)和非高密度脂蛋白胆固醇(non-high density lipoprotein cholesterol,non-HDL-C)与血液透析患者血管通路衰竭(vascular access failure,VAF)的相关性,以及AIP和non-HDL-C...目的 探讨致动脉粥样硬化指数(atherogenic index of plasma,AIP)和非高密度脂蛋白胆固醇(non-high density lipoprotein cholesterol,non-HDL-C)与血液透析患者血管通路衰竭(vascular access failure,VAF)的相关性,以及AIP和non-HDL-C对VAF事件的预测价值。方法 纳入2017年1月~2021年12月北京朝阳医院肾内科透析室以自体动静脉内瘘为血管通路的维持性血液透析患者为研究对象(n=277),根据是否发生血管通路功能障碍分为VAF组(n=85)与非VAF组(n=192),比较2组间AIP、non-HDL-C及临床特征的差异。多因素COX回归分析VAF发生的独立危险因素,绘制受试者工作特征曲线,根据AUC评估AIP、non-HDL-C及两者联合模型对血液透析患者VAF发生风险的预测价值。结果VAF组患者AIP(Z=7.331,P<0.001)、non-HDL-C(Z=6.566,P<0.001)较非VAF组高,差异有统计学意义。多因素COX回归矫正性别、年龄、血肌酐、尿酸等因素后提示AIP(HR=8.757,95%CI:4.134~18.548,P<0.001)、non-HDL-C(HR=1.533,95%CI:1.094~2.150,P<0.001)是VAF发生的独立危险因素。AIP预测的AUC为0.776(95%CI:0.722~0.831)、non-HDL-C预测的AUC为0.747(95%CI:0.690~0.805),两者联合模型预测的AUC为0.805(95%CI:0.754~0.855)。结论 AIP、non-HDL-C是维持性血液透析患者VAF事件发生的独立危险因素,两者单独或联合模型对VAF发生风险具有良好的预测价值。展开更多
基金Supported by the National Natural Science Foundation of China,No.82074425Hunan Science and Technology Planning Project,No.2016SK2051 and No.2023SK2057the Hunan Provincial Administration of Traditional Chinese Medicine Research Project,No.B2023089.
文摘BACKGROUND Previous studies have shown that the Shi-pi-xiao-ji(SPXJ)herbal decoction formula is effective in suppressing hepatocellular carcinoma(HCC),but the underlying mechanisms are not known.Therefore,this study investigated whether the antitumor effects of the SPXJ formula in treating HCC were mediated by acetyl-coA acetyltransferase 1(ACAT1)-regulated cellular stiffness.Through a series of experiments,we concluded that SPXJ inhibits the progression of HCC by upregulating the expression level of ACAT1,lowering the level of cholesterol in the cell membrane,and altering the cellular stiffness,which provides a new idea for the research of traditional Chinese medicine against HCC.AIM To investigate the anti-tumor effects of the SPXJ formula on the malignant progression of HCC.METHODS HCC cells were cultured in vitro with SPXJ-containing serum prepared by injecting SPXJ formula into wild-type mice.The apoptotic rate and proliferative,invasive,and migratory abilities of control and SPXJ-treated HCC cells were compared.Atomic force microscopy was used to determine the cell surface morphology and the Young’s modulus values of the control and SPXJ-treated HCC cells.Plasma membrane cholesterol levels in HCC cells were detected using the Amplex Red cholesterol detection kit.ACAT1 protein levels were estimated using western blotting.RESULTS Compared with the vehicle group,SPXJ serum considerably reduced proliferation of HCC cells,increased stiffness and apoptosis of HCC cells,inhibited migration and invasion of HCC cells,decreased plasma membrane cholesterol levels,and upregulated ACAT1 protein levels.However,treatment of HCC cells with the water-soluble cholesterol promoted proliferation,migration,and invasion of HCC cells as well as decreased cell stiffness and plasma membrane cholesterol levels,but did not alter the apoptotic rate and ACAT1 protein expression levels compared with the vehicle control.CONCLUSION SPXJ formula inhibited proliferation,invasion,and migration of HCC cells by decreasing plasma membrane cholesterol levels and altering cellular stiffness through upregulation of ACAT1 protein expression.
文摘β-Glucans, mostly from oats, have been shown to reduce blood concentrations of total and LDL-cholesterol in animals and humans. After processing, spent brewer’s yeast, a by-product of the fermentation process, contains 85% - 90% β-glucans. The purpose of this study was to evaluate the effect of yeast-derived β-glucan fiber on plasma lipids and early atherosclerosis development in hamsters consuming a semi-purified hypercholesterolemic diet (HCD). Animals were fed either the HCD or the HCD containing psyllium or β-glucan fiber from yeast for 12 weeks. Both the psyllium and β-glucan fiber from yeast showed significant decreases in plasma total cholesterol, non-HDL-C, triacylglycerol, and aortic fatty streak area when compared to the HCD. Also, the β-glucan fiber from yeast had significantly less aortic fatty streak area compared to the psyllium diet. Findings from this study show that while both β-glucan fiber from yeast and psyllium produced similar reductions in plasma lipid and lipoprotein concentrations, the β-glucan fiber from yeast prevented the development early atherosclerosis better than psyllium in the hamsters.
文摘目的 探讨致动脉粥样硬化指数(atherogenic index of plasma,AIP)和非高密度脂蛋白胆固醇(non-high density lipoprotein cholesterol,non-HDL-C)与血液透析患者血管通路衰竭(vascular access failure,VAF)的相关性,以及AIP和non-HDL-C对VAF事件的预测价值。方法 纳入2017年1月~2021年12月北京朝阳医院肾内科透析室以自体动静脉内瘘为血管通路的维持性血液透析患者为研究对象(n=277),根据是否发生血管通路功能障碍分为VAF组(n=85)与非VAF组(n=192),比较2组间AIP、non-HDL-C及临床特征的差异。多因素COX回归分析VAF发生的独立危险因素,绘制受试者工作特征曲线,根据AUC评估AIP、non-HDL-C及两者联合模型对血液透析患者VAF发生风险的预测价值。结果VAF组患者AIP(Z=7.331,P<0.001)、non-HDL-C(Z=6.566,P<0.001)较非VAF组高,差异有统计学意义。多因素COX回归矫正性别、年龄、血肌酐、尿酸等因素后提示AIP(HR=8.757,95%CI:4.134~18.548,P<0.001)、non-HDL-C(HR=1.533,95%CI:1.094~2.150,P<0.001)是VAF发生的独立危险因素。AIP预测的AUC为0.776(95%CI:0.722~0.831)、non-HDL-C预测的AUC为0.747(95%CI:0.690~0.805),两者联合模型预测的AUC为0.805(95%CI:0.754~0.855)。结论 AIP、non-HDL-C是维持性血液透析患者VAF事件发生的独立危险因素,两者单独或联合模型对VAF发生风险具有良好的预测价值。
