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[Experimental Study on Paeoniflorin Inhibiting mTOR Signaling Pathway in Adjuvant Arthritis Rats]

Cheng-Gui Miao1, You-Yi Xiong1, Mei-Song Qin1

  • 1Food and Drug College, Anhui Science and Technology University, Fengyang 233100, China.

Sichuan Da Xue Xue Bao. Yi Xue Ban = Journal of Sichuan University. Medical Science Edition
|November 1, 2018
PubMed
Abstract

Insights

Paeoniflorin (PF) effectively reduces arthritis symptoms in rats by inhibiting the mTOR signaling pathway in synovial cells. This study highlights PF as a potential therapeutic agent for inflammatory joint diseases.

Area of Science:

  • Pharmacology
  • Immunology
  • Molecular Biology

Background:

  • Adjuvant arthritis (AA) is an inflammatory condition affecting synovial fibroblast-like synoviocytes (FLS).
  • The mTOR signaling pathway plays a crucial role in the pathogenesis of inflammatory diseases.

Purpose of the Study:

  • To investigate the therapeutic effects of paeoniflorin (PF) on adjuvant arthritis (AA) in rats.
  • To elucidate the mechanism of PF action, specifically its impact on the mTOR signaling pathway in FLS.

Main Methods:

  • An AA rat model was established using complete Freund's adjuvant.
  • Paeoniflorin (PF) was administered at varying doses (100, 200, 400 μg/mL) via tail vein injection.
  • Expression levels of mTOR, p-mTOR, MMP3, IL-1, and IL-6 were analyzed using qPCR, ELISA, and Western blot.
  • FLS were transfected with mTOR vectors to assess the role of mTOR overexpression.

Main Results:

  • PF treatment significantly reduced arthritis scores in AA rats.
  • PF administration led to decreased expression of mTOR, p-mTOR, IL-1, IL-6, and MMP3 in FLS.
  • Overexpression of mTOR partially reversed the inhibitory effects of PF on IL-1, IL-6, and MMP3 levels.

Conclusions:

  • Paeoniflorin (PF) demonstrates significant anti-arthritic effects in a rat model.
  • PF exerts its therapeutic action by inhibiting the mTOR signaling pathway in fibroblast-like synoviocytes (FLS).
  • PF shows potential as a novel therapeutic agent for managing adjuvant arthritis.
Keywords:
Adjuvant arthritisFibroblast-like synovial cellsPaeoniflorinmTOR signaling

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