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Paeoniflorin inhibits IL-1β-induced MMP secretion via the NF-κB pathway in chondrocytes

Peng-Fei Hu1,2, Fang-Fang Sun3, Li-Feng Jiang1,2

  • 1Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.

Experimental and Therapeutic Medicine
|August 18, 2018
PubMed

Insights

Paeoniflorin may prevent osteoarthritis (OA) by reducing cartilage-degrading enzymes and inhibiting inflammatory pathways in chondrocytes. This study explored paeoniflorin's anti-catabolic effects on articular surfaces.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Pharmacology

Background:

  • Osteoarthritis (OA) pathogenesis involves cartilage degradation.
  • Paeoniflorin exhibits anti-inflammatory and immune-modulatory effects.
  • The role of paeoniflorin in OA is not well understood.

Purpose of the Study:

  • To investigate the effects of paeoniflorin on articular cartilage in vitro.
  • To determine paeoniflorin's impact on matrix metalloproteinases (MMPs) and tissue inhibitor of metalloproteinases-1 (TIMP-1) in chondrocytes.
  • To examine the influence of paeoniflorin on the nuclear factor (NF)-κB pathway.

Main Methods:

  • Rat chondrocytes were cultured and treated with interleukin (IL)-1β and paeoniflorin.
  • Cell viability was assessed using MTT assay.
  • Gene and protein expression of MMPs and TIMP-1, and NF-κB activation were analyzed via RT-qPCR and Western blotting.

Main Results:

  • Paeoniflorin downregulated MMP expression and upregulated TIMP-1 expression in IL-1β-induced chondrocytes.
  • Paeoniflorin inhibited NF-κB pathway activation.
  • Paeoniflorin demonstrated a protective effect on chondrocytes.

Conclusions:

  • Paeoniflorin exhibits anti-catabolic properties relevant to OA progression.
  • Paeoniflorin may serve as a potential preventative treatment for osteoarthritis.
  • Further research into paeoniflorin's therapeutic potential for OA is warranted.
Keywords:
interleukin-1βmatrix metalloproteinasenuclear factor NF-κBosteoarthritispaeoniflorin

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