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细胞膜流动性

细胞膜流动性的相关文献在1989年到2022年内共计105篇,主要集中在中国医学、内科学、基础医学 等领域,其中期刊论文102篇、会议论文3篇、专利文献556277篇;相关期刊80种,包括激光生物学报、中药药理与临床、现代生物医学进展等; 相关会议3种,包括第十届全国中药药理学术会议、2006第六届中国药学会学术年会、达能营养中心第八次学术年会等;细胞膜流动性的相关文献由359位作者贡献,包括卢景芬、古力努尔、任淑萍等。

细胞膜流动性—发文量

期刊论文>

论文:102 占比:0.02%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:556277 占比:99.98%

总计:556382篇

细胞膜流动性—发文趋势图

细胞膜流动性

-研究学者

  • 卢景芬
  • 古力努尔
  • 任淑萍
  • 屠鹏飞
  • 李晨旭
  • 蔡少青
  • 高泽红
  • 丁涵露
  • 傅大莉
  • 兰颐
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 刘龙祥; 张克颖; 赵红玉; 宋炜钰
    • 摘要: 苹果酸乳酸发酵是酿造优质葡萄酒的重要过程,酒酒球菌是这一过程的主要承担者。葡萄酒中是一个高酒精度、低pH、低温、营养缺乏的多因素胁迫环境,苹果酸乳酸发酵的启动常常会延迟甚至失败,其中低pH胁迫因素最为重要。目前酒酒球菌胁迫应答机制研究逐渐受到重视,研究者提出了多种相关机制,例如膜成分和流动性、pH内外平衡、氧化应激反应、DNA和蛋白质损伤修复机制,但酸胁迫应答机制的研究还缺乏系统性。该文对酒酒球菌进行简介,就酒酒球菌酸胁迫应答机制进行综述,以期为日后有关研究提供参考。
    • 石芸洁; 林慧敏; 金图南; 邓尚贵
    • 摘要: 目的:制备磁性Fe3O4纳米带鱼肽微粒,并研究其对CW-2细胞膜流动性的影响。方法:以磁性Fe3O4纳米微粒为内核,负载具有抑制肿瘤增殖作用的带鱼酶解小肽,通过共沉淀法合成磁性Fe3O4纳米带鱼肽微粒,采用X射线衍射、透射式电子显微镜、原子力显微镜等方法对该纳米粒子结构进行表征;利用荧光偏振法研究该微粒在非磁场与交变磁场中对CW-2人结肠癌细胞膜流动性的影响。结果:共沉淀法合成的磁性Fe3O4纳米带鱼肽微粒呈球形,粒径约10 nm,分布较均匀,颗粒之间有黏连现象,形成缠绕弯曲的线状。与单体磁性Fe3O4纳米微粒相比,带鱼酶解小肽的包覆增强了纳米铁微粒的分散稳定性;该粒子最佳使用pH值范围是6.5~9.0,比较适合于在生物体系中应用。细胞膜流动性检测显示24 h时实验组CW-2细胞膜荧光偏振度P值显著减小、平均微黏度η值减小,表明磁性Fe3O4纳米带鱼肽微粒可使CW-2细胞膜流动性增大,作用呈量效关系。结论:磁性Fe3O4纳米带鱼肽微粒在交变磁场中增强了带鱼酶解小肽的抗肿瘤活性。%Objective: To prepare magnetic Fe3O4 nanoparticles loading peptides derived from enzymatic hydrolysis of hairtail processing waste proteins and explore its effect on membrane fluidity in CW-2 cells. Methods: The target product was synthesized by co-precipitation method, and its structure characteristics and particle size distribution were observed with X-ray diffraction (XRD), transmission electron microscope (TEM) and atomic force microscope (AFM). Meanwhile, its effect on membrane fluidity in human colon cancer CW-2 cels was explored by fluorescence polarization in a non-magnetic field and an alternating magnetic field. Results: Magnetic Fe3O4 nanoparticles loading hairtail peptides were uniformly distributed with a size of approximately 10 nm and they were found to adhere to each other to form intertwined curves. Compared with the single magnetic Fe3O4 particles, loading of hairtail peptides enhanced dispersion stability of magnetic nano-Fe3O4 particles. The optimum pH for magnetic Fe3O4 nanoparticles loading hairtail peptides was 6.5–9.0. Cel membrane fluidity tests showed thatP andη values in the experimental group were significantly reduced after 24 h of alternating magnetic field exposure, indicating that the magnetic Fe3O4 nanoparticles loading hairtail peptides could increase cel membrane fluidity. Conclusion: Magnetic Fe3O4 nanoparticles loading hairtail peptides can enhance the anti-tumor activity of hairtail peptides in an alternating magnetic field.
    • 李振虎; 王化龙; 刘艳庭; 高秀梅; 徐砚通
    • 摘要: 目的:研究聚山梨酯80诱发类过敏反应的可能作用机制.方法:采用小鼠耳廓蓝染模型考察聚山梨酯80对血管通透性的影响,验证聚山梨酯80诱发类过敏反应效应;采用RBL-2H3细胞脱颗粒模型探索聚山梨酯80诱发类过敏反应的可能作用机制.首先检测B-氨基己糖苷酶释放,考察聚山梨酯80对过敏介质释放的影响;进而采用细胞膜特异荧光染料FM4-64在高内涵系统考察聚山梨酯80对细胞脱颗粒囊泡回收的影响;最后采用荧光偏振法考察聚山梨酯80对细胞膜流动性影响.结果:小鼠耳廓蓝染实验证明聚山梨酯80能够显著提高血管通透性,证实了聚山梨酯80诱发类过敏反应效应;在RBL-2H3细胞模型上,β-氨基己糖苷酶释放实验证实聚山梨酯80能够显著增加β-氨基己糖苷酶释放,表明聚山梨酯80能够直接诱发过敏介质释放;高内涵实验显示聚山梨酯80能够显著促进囊泡回收,提示聚山梨酯80能够促进细胞脱颗粒过程中的囊泡循环;荧光偏振法检测实验证实聚山梨酯80显著降低相对荧光偏振度,提示聚山梨酯80能够提高细胞膜流动性.结论:研究结果提示聚山梨酯80诱导类过敏反应发生机制可能通过提高细胞膜流动性加速了囊泡循环,促进了细胞脱颗粒,增加了过敏介质释放引起类过敏反应症状.
    • 曾新安; 欧贇; 王满生
    • 摘要: 研究了脉冲电场作用对鼠伤寒沙门氏菌Salmonella Typhimurium的杀菌效应及其膜通透性的影响,并结合拉曼光谱技术分析了不同脉冲处理时间对沙门氏菌磷脂构象的影响.结果表明:随着脉冲电场能量的不断输入,沙门氏菌的灭活对数不断增加,且细胞膜的通透性也随之增大;此外,随着脉冲处理时间的延长,沙门氏菌磷脂拉曼峰的峰值比I1139/I1082呈现出先增大后减小的趋势,但是均比未经脉冲电场处理的峰值比要高(P<0.05).这说明脉冲电场作用能够增加沙门氏菌磷脂的C—C全反式构象的数目,同时减少了C—C扭曲构象数目;但是,随着脉冲处理时间的延长,峰值比I2874/L862也随之增大(P<0.05),这意味着脉冲电场作用能够有效增大沙门氏菌磷脂C—H的侧向堆积程度,从而导致了磷脂脂链的有序程度增加和细胞膜流动性的减弱.因此,脉冲电场作用能够增大细胞膜的通透性和降低细胞膜流动性,最终会引起细胞损伤或者死亡.这为脉冲电场作用下微生物的灭活机理研究提供了一定的理论依据.%In the investigation,the effects of the pulsed electric field (PEF) treatment on the survival ratio and cytomembrane permeability of Salmonella Typhimurium are discussed,and the effect of the PEF treatment time on the phospholipid conformation of S.Typhimurium is also analyzed by using the Raman spectra.The results show that (1) as the energy of PEF inputs continuously,the cell viability decreases and the cytomembrane permeability increases;(2) with the increase of the PEF treatment time,the peak value ratio of the Raman spectra of S.Typhimurium phospholipid,namely II 139/I1082,first increases and then decreases,and it is always higher than that without PEF treatment (P < 0.05),which indicates that the PEF treatment can increase the number of the all-trans conformation of C—C and decrease the number of the gauche conformation of C—C;and (3) as the PEF treatment time increases,I2874/I2862 increases (P < 0.05),which means that the PEF treatment increases the lateral chain interaction of C—H and thus results in the increase of the intrachain order of phospholipid molecules and the decrease of the cytomembrane fluidity of S.Typhimurium.Therefore,it is concluded that the PEF treatment can cause cell damage or cell death by increasing the cytomembrane permeability and decreasing the cytomembrane fluidity.This investigation provides a theoretical basis for the mechanism research of inactivating micro-organisms with the PEF treatment.
    • 兰颐; 李辉; 陈岩岩; 章烨雯; 张庆; 康倩; 吴清
    • 摘要: 目的:本文选择HaCaT角质形成细胞测定花椒挥发油对其细胞膜流动性和膜电位的影响及其机制,研究花椒挥发油对皮肤活性表皮的影响,探讨其促进药物透皮吸收的作用机制.方法:采用CCK-8试验测定花椒挥发油的细胞毒性,利用荧光漂白恢复技术(FRAP)考察不同浓度花椒挥发油对细胞膜流动性的影响,采用流式细胞仪测定不同浓度花椒挥发油对细胞膜电位的改变,同时考察了花椒挥发油对HaCaT细胞内Ca2+浓度的影响,采用超微量Ca2+-ATP酶试剂盒测定花椒挥发油对HaCaT细胞内Ca2+-ATP酶活性的影响.结果:相对于常用化学促透剂氮酮,花椒挥发油具有较低细胞毒性,花椒挥发油可增加HaCaT细胞膜流动性、降低细胞膜电位,同时可降低Ca2+-ATP酶活性、增加HaCaT细胞内Ca>浓度而影响细胞Ca2+平衡.结论:花椒挥发油可能通过改变细胞内Ca2+平衡而影响细胞膜流动性及膜电位,增加活性表皮流动性以降低皮肤表皮屏障作用,从而利于药物的透皮吸收.
    • 杨益; 苏文莉; 孙走南; 唐玥; 李瑾慧; 刘京梅; 常国辉; 黄留玉
    • 摘要: 目的:观察两种植物多酚EGCG(表没食子儿茶素没食子酸酯)、单宁酸对5型腺病毒感染后宿主细胞膜流动性的影响,初步探讨植物多酚抑制病毒作用机制.方法:利用DPH为荧光探针,以荧光偏振法观察5型腺病毒感染对宿主细胞膜流动性的影响,EGCG、单宁酸在此过程中对宿主细胞膜流动性改变的干预作用,结合CPE法测定的EGCG,单宁酸抑制5型腺病毒感染药效试验结果,以Spearman秩相关计算EGCG,单宁酸对宿主细胞膜流动性干预作用与其抑制病毒感染作用间的关系.结果:腺病毒感染细胞可提高宿主细胞膜流动性,滴度为100TCID50病毒可使293A细胞膜流动性提高15.34%.EGCG、单宁酸可抑制宿主细胞膜流动性,高浓度下分别可使宿主细胞膜流动性下降32.61%、25.75%.在病毒吸附前、吸附后、吸附同时,以EGCG、单宁酸处理宿主细胞,均发现宿主细胞膜流动性的干预作用与其抑制病毒感染效果高度相关(相关系数均>0.900,P<0.01).结论:5型腺病毒感染会提高宿主细胞膜的流动性,而EGCG、单宁酸在干预腺病毒感染过程中对宿主细胞膜流动性的干预作用可能是其抑制腺病毒感染的机制之一.
    • 傅大莉; 雍小兰; 刘德芳; 肖爽
    • 摘要: Objective To investigate the action mode of borneol on activity of epidermal skin;To investigate action mode of borneol as penetration enhancer. Methods The well-established and standard penetration enhancer Azone was employed as a positive control in this study. The cytotoxicities of borneol and Azone on HaCaT cells were detected by CCK-8 assay, and their half 50% inhibitory concentrations (IC50) were calculated. The fluorescence recovery after photo bleaching was employed to investigate the effect of borneol and Azone on membrane fluidity, and the flow cytometer was used to monitor the changes of membrane potential of HaCaT cell after treated with these penetration enhancers. Results The IC50 values of borneol and Azone were 2.826 , 0.172 mmol/L, respectively. Borneol could significantly improve the membrane fluidity in a concentration-dependent manner, and effectively decrease the membrane potential of HaCaT cell, which exhibited the performances similar to those of Azone. Conclusion The penetration enhancement mechanism of borneol was associated with the concentrations of Ca2+ in keratinocytes, which changes the membrane fluidity and membrane potential of HaCaT cell.%目的:研究冰片对皮肤活性表皮作用方式,探究冰片作为经皮促透剂的促透作用机制。方法选择常用经典化学经皮促透剂氮酮作为阳性对照促透剂,采用CCK-8试剂盒测定并计算冰片对HaCaT细胞的半数抑制率(IC50),利用荧光漂白恢复技术测定不同浓度冰片对HaCaT细胞膜流动性的影响,采用流式细胞仪测定冰片对HaCaT细胞膜电位及细胞膜内Ca2+浓度的影响。结果冰片和氮酮的药物IC50分别为2.826、0.172 mmol/L;冰片可增加HaCaT细胞膜流动性,且随着药物浓度的增大而增加,呈剂量依赖性关系;冰片可降低HaCaT细胞膜电位和HaCaT细胞内Ca2+浓度,表现出类似氮酮作用特点。结论冰片的经皮促透作用机制可能与其影响角质细胞内Ca2+浓度进而改变活性表皮角质形成细胞膜电位和膜流动性有关。
    • 杨金龙; 朱圆圆; 朱均均; 郭枫; 黄茜茜; 徐勇; 勇强; 余世袁
    • 摘要: 以树干毕赤酵母为发酵菌株,研究氯化盐类和硫酸盐类对其己糖戊糖共发酵影响,并采用荧光偏振法测定盐类对酵母细胞膜流动性的影响. 研究结果表明,盐类对树干毕赤酵母发酵有着明显的抑制作用;当氯化盐的浓度达到0. 5 mol/L、发酵24 h时,NaCl对乙醇发酵的抑制作用最为明显,与未添加氯化盐相比,糖利用率、乙醇浓度以及乙醇得率分别下降了52. 00 %、65. 10 %、22. 50 %,盐离子对树干毕赤酵母发酵的抑制作用Na+ >NH4+ >K+.硫酸盐中的阳离子浓度是氯化盐的2倍,但抑制作用没有显著不同,所以Cl-对树干毕赤酵母的乙醇发酵抑制作用要大于SO2-4 ;高盐浓度下细胞膜的流动性更高,且不同盐离子对细胞膜的流动性影响也不同,NH4+对细胞膜的流动性影响最大,细胞膜流动性的增加可能是增加细胞对压力的耐受性,降低对细胞的损失.%The effects of chlorides and sulfates on co-fermentation of glucose and xylose by Pichia stipitis NLP31were investigated, and fluorescence polarization was used as to determine the effect of salts on membrane fluidity. The results showed that salt concentration had a significant negative impact on the fermentation performance of yeast. When the concentration of salt was 0. 5 mol/L, after 24 h, the inhibition effect of NaCl was the most. The sugar utilization ratio, ethanol concentration and ethanol yield decreased by 52. 00%, 65. 10% and 22. 50%, respectively, compared to that of the control. The inhibition effect of chlorides was Na+ >NH4+ >K+. Al-though cation concentrations in the sulfates were twice in the chlorides, the inhibition effect had not significant difference. So the inhi-bition effect of Cl- on ethanol fermentation by P. stipitis was more significant than that of SO2-4 . The membrane fluidity of yeast in high concentration of salts became higher, and the different salt ions had different effects on cell membrane fluidity. NH4+ showed the grea-test impact on cell membrane fluidity. Increased membrane fluidity could increase cellular resistance to stress, and decrease cell loss.
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