betway必威登陆网址 (betway.com )学报››2023,Vol. 44››Issue (3): 197-201.DOI:10.3969/j.issn.2097-0005.2023.03.007

• 基础研究 •上一篇下一篇

柿叶黄酮的镇痛抗炎作用及对口腔溃疡大鼠p38MAPK和MMP2/9的调控作用

王朔(), 赵作勤, 张古泉, 张永丽()

  1. betway必威登陆网址 (betway.com )口腔医学院,山东 泰安  271016
  • 收稿日期:2022-09-05出版日期:2023-04-24发布日期:2023-04-24
  • 通讯作者:张永丽
  • 作者简介:王朔,学士,研究方向:牙齿整复和整形工作,E-mail:329540834@qq.com
  • 基金资助:
    国家级大学生创新创业训练计划(201510439015);泰安市科技发展计划(2018NS0121)

Analgesic and anti-inflammatory effects of persimmon leaf flavone and its regulatory effects on p38MAPK and MMP2/9 in rats with oral ulcer

Shuo WANG(), Zuoqin ZHAO, Guquan ZHANG, Yongli ZHANG()

  1. School of Stomatology,Shandong First Medical University & Shandong Academy of Medical Science,Taian 27100,China
  • Received:2022-09-05Online:2023-04-24Published:2023-04-24
  • Contact:Yongli ZHANG

摘要:

目的探索柿叶黄酮(persimmon leaf flavonoids,PLF)防治口腔溃疡的药效学及其抗炎机制。方法采用扭体法和痛阈测定考察PLF的镇痛作用;采用耳廓肿胀实验和足趾肿胀实验考察PLF的抗炎作用;通过建立大鼠口腔溃疡模型(醋酸法),采用免疫印迹技术考察PLF对口腔溃疡组织中p38丝裂原活化蛋白激酶(p38 mitogen-activated protein kinases,p38MAPK)、磷酸化p38MAPK(p-p38MAPK)、基质金属蛋白酶-2/9(matrix metalloproteinase -2/9,MMP-2/9)蛋白表达的影响。结果PLF可显著减少小鼠的扭体次数和提高痛阈值,且PLF可显著减轻二甲苯诱导的小鼠耳廓肿胀度,抑制蛋清所致的足趾肿胀。此外,PLF可显著下调口腔溃疡大鼠溃疡组织内MMP-2/9蛋白表达,显著抑制p38MAPK的磷酸化。结论PLF具有镇痛抗炎作用,可通过抑制MAPK信号通路及下调MMP-2/9表达发挥防治口腔溃疡的作用。

关键词:柿叶黄酮,口腔溃疡,镇痛,炎症

Abstract:

ObjectiveTo explore the pharmacological basis and anti-inflammatory mechanism of persimmon leaf flavonoids (PLF) in preventing and treating oral ulcer.MethodsThe analgesic and anti-inflammatory effects of PLF were evaluated by writhing test, pain threshold test, auricle swelling test and toe swelling test in mice. Moreover, based on rat oral uclcer model (acetic acid method), the effects of PLF on the expressions of p38 mitogen activated protein kinases (p38MAPK), phosphorylated p38MAPK (P-P38MAPK) and matrix metalloproteinase-2/9 (MMP-2/9) in oral ulcer tissues were investigated by immunoboltting.ResultsPLF could significantly reduce the number of writhing, increase the pain threshold, reduce the auricle swelling induced by xylene and inhibit the toe swelling induced by egg white. In addition, PLF could down regulate the expression of MMP-2/9 protein and inhibit the phosphorylation of p38MAPK.ConclusionPLF has clear analgesic and anti-inflammatory effects. The therapeutic effects of PLF on oral ulcer may be through inhibiting MAPK signaling pathway and down-regulating expression of MMP-2/9.

Key words:persimmon leaf flavone,oral ulcer,analgesia,inflammation