Moderate Physical Activity as a Prevention Method for Knee Osteoarthritis and the Role of Synoviocytes as Biological Key

Int J Mol Sci. 2019 Jan 25;20(3):511. doi: 10.3390/ijms20030511.

Abstract

The purpose of this study was to investigate the influence of moderate physical activity (MPA) on the expression of osteoarthritis (OA)-related (IL-1β, IL-6, TNF-α, MMP-13) and anti-inflammatory and chondroprotective (IL-4, IL-10, lubricin) biomarkers in the synovium of an OA-induced rat model. A total of 32 rats were divided into four groups: Control rats (Group 1); rats performing MPA (Group 2); anterior cruciate ligament transection (ACLT)-rats with OA (Group 3); and, ACLT-rats performing MPA (Group 4). Analyses were performed using Hematoxylin & Eosin (H & E) staining, histomorphometry and immunohistochemistry. In Group 3, OA biomarkers were significantly increased, whereas, IL-4, IL-10, and lubricin were significantly lower than in the other experimental groups. We hypothesize that MPA might partake in rescuing type B synoviocyte dysfunction at the early stages of OA, delaying the progression of the disease.

Keywords: interleukins; lubricin; osteoarthritis; physical activity; synovium.

MeSH terms

  • Animals
  • Anterior Cruciate Ligament Injuries / complications*
  • Cytokines / metabolism*
  • Disease Models, Animal
  • Interleukin-10 / metabolism
  • Interleukin-1beta / metabolism
  • Interleukin-4 / metabolism
  • Interleukin-6 / metabolism
  • Male
  • Osteoarthritis, Knee / metabolism
  • Osteoarthritis, Knee / prevention & control*
  • Physical Conditioning, Animal / methods*
  • Rats
  • Synoviocytes / metabolism*
  • Transcription Factors / metabolism
  • Tumor Necrosis Factor-alpha / metabolism

Substances

  • Cytokines
  • IL1B protein, rat
  • Il6 protein, rat
  • Interleukin-1beta
  • Interleukin-6
  • Rabep2 protein, rat
  • Transcription Factors
  • Tumor Necrosis Factor-alpha
  • Interleukin-10
  • Interleukin-4