›› 2004, Vol. 24 ›› Issue (3): 131-133.

• 论文 •    下一篇

川芎嗪对P2X3受体介导的大鼠伤害性兴奋传入的作用

  

  1. 江西医学院实验动物科学部,南昌 330006
  • 收稿日期:2004-05-31 出版日期:2004-01-25 发布日期:2013-03-19
  • 基金资助:

    国家自然科学基金资助课题(No 30260030)

Effect of Tetramethylpyrazine on P2X3 receptor Mediated Excitation of Nociceptive Afferents

  1. Department of Laboratory Animal Science, Jiangxi Medical College,Nanchang 330006, China
  • Received:2004-05-31 Online:2004-01-25 Published:2013-03-19

摘要: 通过动物痛行为反应(缩足反射)确定局部和鞘内应用川芎嗪(TMP)对ATP等P2X受体激动剂所致大鼠足底急性伤害性行为反应的影响。P2X3受体拮抗剂TNP-ATP(0.3μmol/L)明显抑制P2X受体激动剂ATP(1μmol/L)或α,β-meATP(0.6μmol/L)引起的大鼠足底急性伤害性反应。大鼠足底局部应用TMP(0.1~10mmol/L)剂量依赖性地对ATP(1μmol/L)或α,β-meATP(0.6 μmol/L)引起的伤害性反应具有抑制作用。鞘内应用TMP(50mmol/L)对ATP(1μmol/L)或α,β-meATP(0.6μmol/L)引起的伤害性反应具有抑制作用。结果表明,TMP可通过阻断P2X3受体介导的伤害性兴奋传入抑制P2X受体激动剂引起的大鼠足底急性伤害性反应。

关键词: 大鼠, 川芎嗪, 三磷酸腺苷, P2X受体, 伤害性反应, 足底用药, 鞘内用药

Abstract: Using a behavioral study to characterize the effects of TMP administered by intraplantarlly and intrathecally on the acute nociception(flinching) mediated by P2X receptor activation of rat hindpaw. The P2X3 receptor antagonist TNP-ATP(0.3μmol/L) significantly depressed the acute nociception mediated by ATP (1 μ mol/L) and α,β -meATP (0.6μmol/L) in rat hindpaw. Intraplantar administration of TMP (0.1-10 mmol/L) inhibited the acute nociception in a dose-dependent manner mediated by ATP (1 μ mol/L) or α,β -meATP (0.6μmol/L) in rat hindpaw. Intrathecal ly applied TMP (50 mmol/L) inhibited the nociception induced by ATP (1 μmol/L) or α , β -meATP (0.6 μ mol/L) in rat hindpaw. TMP inhibited the nociceptive behaviors induced by P2X3 receptor mediated excitation of nociceptive afferents.

Key words: Rat, Tetramethylpyrazine, ATP, P2X receptors, Nociception, Intraplantar drug administration, Intrathecal drug administration