期刊文献+

激光照射引发的肥大细胞内钙信号和脱颗粒动力学模型 被引量:3

原文传递
导出
摘要 最近研究表明,低强度的激光照射引发的肥大细胞内钙信号和脱颗粒动力学过程必须依赖于细胞外Ca2+的内流.为此,提出了一个由激光光子能量和胞外Ca2+协同作用下经TRPV4通道介导进入细胞的Ca2+流量的解析表达式,建立了刻画激光照射下肥大细胞内钙信号和脱颗粒动力学的模型.模型表明,钙信号和脱颗粒动力学的特征是由细胞外Ca2+和光子能量的协同作用决定的.较高的胞外Ca2+浓度使得只需较小的光子能量就能激活肥大细胞,由此就避免了细胞受较短波长的激光照射而可能引起的损伤.模型预测存在导致细胞内Ca2+浓度极限环振荡的细胞外Ca2+浓度和光子能量的狭窄的参数区域,验证了PKC的活性正比于Ca2+振荡频率的实验结论.模型发现胞质Ca2+浓度升高后并持续稳定在最大值平台能够获得最佳的脱颗粒率.此外,将真实的物理能量导入模型的思路可推广至其他物理信号转导系统的建模.
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第11期1279-1287,共9页 Chinese Science Bulletin
基金 上海市科学技术委员会基础研究项目(批准号:05DZ19747) 上海市教育委员会科研项目(批准号:05AZ58) 上海大学系统生物研究基金资助
  • 相关文献

参考文献45

  • 1Pretel H, Lizarelli R F Z, Ramalho L T O. Effect of low-level laser therapy on bone repair: Histological study in rats. Laser Surg Med, 2007, 39:788-796
  • 2Aimbire F, Bjordal J M, Iversen V V, et al. Low level laser therapy partially restores trachea muscle relaxation response in rats with tumor necrosis factor α-mediated smooth airway muscle dysfunction. Laser Surg Med, 2006, 38:773-778
  • 3Oron U, Yaakobi T, Oron A, et al. Low-energy iaser irradiation reduces formation of Scar tissue after myocardial infarction in rats and dogs. Circulation, 2001, 103:296
  • 4Shefer G, Partridge T A, Heslop L, et al. Low-energy laser irradiation promotes the survival and cell cycle entry of skeletal muscle satellite cells. J Cell Sci, 2002, 115:1461- 1469
  • 5Conlan M J, Replay J W, Cobb C M. Biostimulation of wound healing by low-energy laser irradiation: A review. J Clin Periodontol, 1996, 23(5): 492-496
  • 6Oron A, Oron U, Streeter J, et al. Low-level laser therapy applied transcranially to mice following traumatic brain injury significantly reduces long-term neurological deficits. J Neurotraum, 2007, 24(4): 651-656
  • 7Metz M, Maurer M. Mast cell-key effector cells in immune responses. Trends Immunol, 2007, 28(5): 234-241
  • 8Bachelet I, Levi-Schaffer F. Mast cells as effector cells: A costimulating question. Trends Immunol, 2007, 28(8): 360-365
  • 9Weller K, Foitzik K, Paus R. Mast cells are required for normal healing of wounds in mice. FASEB J, 2006, 20:2366-2368
  • 10Gilfillan, A M, Tkaczyk C. Integrated signalling pathways for mast-cell activation. Nat Rev Immunol, 2006, 6:218-230

二级参考文献10

  • 1JIU Yaming,HU Zhitao,LIU Jie,WU Zhengxing,XU Tao.α-LTX and α-LTX^(N4C) induce [Ca^(2+)]i elevation through different mechanisms in pancreatic β cells[J].Chinese Science Bulletin,2006,51(2):158-163. 被引量:2
  • 2Clapham D E. Calcium signalling. Cell, 1995, 80(2): 259-268.
  • 3Berridge M J, Lipp P, Bootman M D. The versatility and universality of calcium signalling. Nat Rev Mol Cell Biol, 2000, 1(1):11-21.
  • 4Neher E, Sakmann B. Single-channel currents recorded from membrane of denervated frog muscle fibres. Nature, 1976, 260(5554):799-802.
  • 5Cheng H, Lederer W J, Cannell M B. Calcium sparks: elementary events underlying excitation-contraction coupling in heart muscle.Science, 1993, 262(5134): 740-744.
  • 6Smith G D, Keizer J E, Stern M D, et al. A simple numerical model of calcium spark formation and detection in cardiac myocytes. Biophys J, 1998, 75(I ): 15-32.
  • 7Cheng H, Lederer M R, Cannell M B, et al. Calcium sparks and [Ca^2+] waves in cardiac myocytes. Am J Physiol, 1996,270(1): C148-159.
  • 8Cheng H, Song L S, Shirokova N, et al. Amplitude distribution of calcium sparks in confocal images: theory and studies with an automatic detection method. Biophysical J, 1999, 76(2): 606-617.
  • 9Dai W Z, Nassar R. A compact finite-difference scheme for solving a one-dimension heat transport equation at the microscale. J Comput Appli Math, 2001, 132 (2): 431-441.
  • 10Ozisik M N, Tzou D Y. On the theory in heat conduction. ASME J Heat Transfer, 1994, 116(3): 526-536.

共引文献3

同被引文献52

引证文献3

二级引证文献24

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