天然产物研究与开发 ›› 2020, Vol. 32 ›› Issue (10): 1659-1666.doi: 10.16333/j.1001-6880.2020.10.005

• 研究论文 • 上一篇    下一篇

豆腐果苷通过抑制TrkA-TRPV1信号通路减轻大鼠膝骨关节炎疼痛

项婷1,贾元威2,郭南1,王萍1,王昌茂1,詹翠娇1,徐新徽1,沈杰2*   

  1. 1皖南医学院;2皖南医学院弋矶山医院,芜湖 241000

  • 出版日期:2020-10-28 发布日期:2020-10-29
  • 基金资助:
    皖南医学院弋矶山医院引进人才专项(YR201913,YR202015);皖南医学院弋矶山医院科研能力“高峰”培训计划精英项目(GF2019J05,GF2019J06)

Helicid reduces pain of knee osteoarthritis in rats by inhibiting TrkA-TRPV1 signaling pathway

XIANG Ting1,JIA Yuan-wei2,GUO Nan1,WANG Ping1,WANG Chang-mao1,ZHAN Cui-jiao1,XU Xin-hui1,SHEN Jie2*   

  1. 1Wannan Medical College;2Yijishan Hospital of Wannan Medical College,Wuhu 241000,China

  • Online:2020-10-28 Published:2020-10-29

摘要:

本实验研究豆腐果苷对膝骨关节炎大鼠疼痛的作用及机制。SD大鼠适应性饲养后测得基础痛阈值,根据基础痛阈值筛选后将大鼠随机分为空白组、模型组、假手术组、给药组。大鼠右膝关节腔内注射单钠碘乙酸盐(MIA)诱导膝骨关节炎(KOA)模型,定期测量大鼠痛阈和关节直径,14天后处死部分大鼠检测大鼠背根神经节(DRG)内TrkA及TRPV1阳性细胞数及荧光强度。与模型组相比,豆腐果苷给药能明显改善MIA诱导的热痛敏和机械痛敏。且给药组L4 DRG中TrkA免疫荧光强度、TRPV1荧光阳性细胞数均低于模型组。表明豆腐果苷可缓解大鼠KOA疼痛,其机制与KOA大鼠L4 DRG中TrkA-TRPV1通路的抑制有关。

关键词: 豆腐果苷, 膝骨关节炎, 疼痛, TrkA, TRPV1

Abstract:

In this paper,the effect and mechanism of helicid on pain in rats with knee osteoarthritis are studied.The basic pain threshold is measured after adaptive feeding of SD rats,and unqualified rats are eliminated accordingly.According to the basic pain threshold,SD rats are randomly divided into blank group,model group,sham operation group and administration group.The KOA model is induced by injecting MIA into the right knee joint of rats.The pain threshold and joint diameter are measured regularly.After 14 days of model establishment,the number and fluorescence intensity of tyrosine kinase A (TrkA) and transient receptor potential vanilloid subfamily member 1 (TRPV1) positive cells in dorsal root ganglia (DRG) are measured.Compared with the model group,helicid can significantly improve the thermal and mechanical pain sensitivity induced by MIA.The TrkA immunofluorescence intensity and the number of TRPV1 positive cells in L4DRG of the administration group were lower than the model group.The results show that helicid can alleviate the pain of KOA in rats,the mechanism of which is related to the inhibition of TrkA-TRPV1 pathway in L4DRG.

Key words: helicid, KOA, pain, TrkA, TRPV1

中图分类号:  R965