期刊文献+

1-磷酸鞘氨醇对豚鼠心室肌动作电位和收缩力的影响 被引量:5

The effects of sphingosine-1 1-phosphate(SIP) on the action potential and contractile in guinea pig ventricular myocardium
下载PDF
导出
摘要 目的:研究1-磷酸鞘氨醇(S1P)对豚鼠心室肌动作电位(AP)和心肌收缩力(CF)的影响。方法:实验采用标准玻璃微电极细胞内记录技术记录心室肌细胞动作电位(AP)肌力换能器记录心肌收缩力(CF)。结果:①应用0.1μmol/LS1P后心室肌动作电位幅度(APA)和时程(APD)与应用S1P前比较差异无显著性,而应用1.0μmol/LS1P,10μmol/L S1P后心室肌动作电位的幅度(APA)与应用S1P前比较明显降低而动作电位的时程(APD)与应用S1P前比较明显延长(P<0.01)。②应用1.0μmol/L S1P和10μmol/L S1P后心室肌的CF与给药前相比明显增强(P<0.01),应用0.1μmol/L S1P后心室肌的CF与给药前比较差异无显著性(P>0.05)。而加入S1P特异性G蛋白耦联内皮细胞分化基因(EDG)受体阻断剂苏拉明后,S1P的上述作用与给药前比较差异无显著性(P>0.05)。结论:S1P可以降低心室肌动作电位幅值延长动作电位时程,增加心室肌收缩力,并且是通过其特异性的G蛋白耦联内皮细胞分化基因(EDG)受体介导而产生这些作用,有一定的剂量依赖性。
出处 《中国应用生理学杂志》 CAS CSCD 北大核心 2007年第1期29-29,40,45,共3页 Chinese Journal of Applied Physiology
基金 吉林省科委资助项目(20020503-16)
关键词 1-磷酸鞘氨醇 苏拉明 动作电位 收缩力 sphingosine-l-phosphate suramin action potential contractile
  • 相关文献

参考文献4

  • 1Yatomi Y,Ozaki Y,Ohmori T,et al.Sphingl-phosphate;synthesis and rdease[J].Prostaglandins,2001,64(1-4):107-122.
  • 2Yatomi Y,Igarashi Y,Yang L,et al.sphingl-phcxsphate,a bioactive sphingolipid abundantly stored in platelets,is a normal constituent of human plasma and serum[J].J Biochem,1997,121:969-973.
  • 3Smmhez T,Hla T.Structural and functional characteristics of SIP receptor[J].J Cell Biochem,2004,92:913-922.
  • 4Bendni C,Squecco R,Piperio C.Effects of sphingosine 1-phosphate on excitation-contraction coupling in mammaliea skeletal muscle[J].Muscle Res Cell Motil,2003:24(8):539-554.

同被引文献24

  • 1兰同汉,袁卉君,林家瑞.大鼠背根神经节分离神经元的延时整流的钾离子单通道[J].北京生物医学工程,2004,23(2):132-134. 被引量:2
  • 2Yatomi Y, Ozaki Y, Ohmori T, et al. Sphingl-phosphate, synthesis and release[ J]. Prostaglandins , 2001, 64(1-4) : 107-122.
  • 3Yatomi Y, Igarashi Y, Yang L, et al. Sphingl-phosphate, a bioactive sphingolipid abundantly stored in platelets, is a norreal constituent of human plasma and serum [ J ]. Biochem, 1997, 121: %9-973.
  • 4Sanchez T, Hla T. Structural and functional characteristics of SIP receptor[J]. Cell Biochem, 2004, 92: 913-922.
  • 5Theilmeier G, Schmidt C, Herrmann J, et al. High-Density Lipoproteins and Their Constituent, Sphingosine-1-Phosphate, Directly Protect the Heart Against lschemia/Reperfusion Injury In Vivo via the S1P3 Lysophospholipid Receptor [J]. Circulation, 2006, 26: 1403-1409.
  • 6Beceiolini L, Meacei E, Donati C, et al. Sphingosine-1 phosphate inhibits cell migration in C2Cl2 myoblasts [J]. Biochim Biophys Acta, 2006, 1761 (1): 43-51.
  • 7Bjorklunda S, Palmberga S, Raska S, et al. Effects of phingosine-1 phosphate on calcium signaling, proliferation and S1P2 receptor expression in PC Cl3 rat thyroid cells pJ]. Mol Cellular Endocrinol, 2005, 231 (1-2): 65-74.
  • 8Means CK, Xiao CY, Li ZJ, et al. Sphingosine 1 phosphate SIP (2) and SIP (3) receptor- mediated Akt activation protects against in vivo myocardial ischemia-reperfusion injury[J]. Am J Physiol Heart Circul Physiol, 2007, 292 (6): H2944-H2951.
  • 9Alewijnse AE, Peters SLM, Michel MC. Cardiovascular effects of sphingosine-1-phosphate and other sphingomyelin metabolites [J]. Br J Pharmacol, 2004, 143 (6) : 666-684.
  • 10Brinkmann V, Davis MD, Heise CE, et al. The immune modulalor FTY720 targets sphingosinel-phosphate receptors [ J ]. J Biol Chem, 2002, 277 (24) :21453-21457.

引证文献5

二级引证文献5

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部