Plasma membrane vesicles of chrysanthemum ( Dendranthema morifolium (Ramat.) Tzvel.) callus was purified by sucrose gradient centrifugation to investigate the influence of sound stimulation on the lipid physical st...Plasma membrane vesicles of chrysanthemum ( Dendranthema morifolium (Ramat.) Tzvel.) callus was purified by sucrose gradient centrifugation to investigate the influence of sound stimulation on the lipid physical states and metabolism of plasma membrane. The results showed that sound stimulation decreased the content of phosphodiesters and the fluorescent intensity of DPH, but increased the light scattering value of the membrane, the fluorescent intensity of MC540 and the content of phosphomonoesters, indicating that the vesicles got looser, the charge density and hydrophobicity of membrane surface decreased under sound stimulation of some strength and frequency. However, the membrane fluidity increased under the condition. Meanwhile, the anabolism of membrane lipid increased and the catabolism decreased. It can be seen that the physical state and metabolism of membrane lipid is sensitive to sound stimulation.展开更多
目的:观察滁菊总黄酮对Wistar大鼠心肌缺血再灌注损伤(MIRI)的作用。方法:采用结扎冠状动脉左前降支30min后再灌注60min的方法复制急性MIRI大鼠模型,观察滁菊总黄酮对MIRI大鼠心肌梗死范围,血清肌酸激酶(CK)、乳酸脱氢酶(LDH)活性,血清...目的:观察滁菊总黄酮对Wistar大鼠心肌缺血再灌注损伤(MIRI)的作用。方法:采用结扎冠状动脉左前降支30min后再灌注60min的方法复制急性MIRI大鼠模型,观察滁菊总黄酮对MIRI大鼠心肌梗死范围,血清肌酸激酶(CK)、乳酸脱氢酶(LDH)活性,血清及心肌中超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量,体外血栓长度及干、湿质量,全血及血浆黏度的影响。结果:滁菊总黄酮能显著减小MIRI大鼠心肌梗死范围,降低血清C K、L D H活性,升高血清和心肌组织中S O D活性,降低M D A含量和体外血栓长度,减轻血栓干、湿质量,改善全血黏度。结论:滁菊总黄酮对大鼠MIRI具有保护作用。展开更多
文摘Plasma membrane vesicles of chrysanthemum ( Dendranthema morifolium (Ramat.) Tzvel.) callus was purified by sucrose gradient centrifugation to investigate the influence of sound stimulation on the lipid physical states and metabolism of plasma membrane. The results showed that sound stimulation decreased the content of phosphodiesters and the fluorescent intensity of DPH, but increased the light scattering value of the membrane, the fluorescent intensity of MC540 and the content of phosphomonoesters, indicating that the vesicles got looser, the charge density and hydrophobicity of membrane surface decreased under sound stimulation of some strength and frequency. However, the membrane fluidity increased under the condition. Meanwhile, the anabolism of membrane lipid increased and the catabolism decreased. It can be seen that the physical state and metabolism of membrane lipid is sensitive to sound stimulation.
文摘目的:观察滁菊总黄酮对Wistar大鼠心肌缺血再灌注损伤(MIRI)的作用。方法:采用结扎冠状动脉左前降支30min后再灌注60min的方法复制急性MIRI大鼠模型,观察滁菊总黄酮对MIRI大鼠心肌梗死范围,血清肌酸激酶(CK)、乳酸脱氢酶(LDH)活性,血清及心肌中超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量,体外血栓长度及干、湿质量,全血及血浆黏度的影响。结果:滁菊总黄酮能显著减小MIRI大鼠心肌梗死范围,降低血清C K、L D H活性,升高血清和心肌组织中S O D活性,降低M D A含量和体外血栓长度,减轻血栓干、湿质量,改善全血黏度。结论:滁菊总黄酮对大鼠MIRI具有保护作用。