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Related Experiment Video

Updated: Jun 13, 2026

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats
08:09

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats

Published on: May 20, 2020

Decrease in oxidative stress and histological changes induced by physical exercise calibrated in rats with

D J Cifuentes1, L G Rocha, L A Silva

  • 1Exercise Biochemistry and Physiology Laboratory, Postgraduate Program in Health Sciences, Health Sciences Unit, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil.

Osteoarthritis and Cartilage
|April 27, 2010
PubMed
Summary

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Impact exercise helps preserve joint cartilage in rats with osteoarthritis (OA). Physical training increased antioxidant defenses and proteoglycan content, mitigating OA progression.

Area of Science:

  • Biomedical Science
  • Orthopedics
  • Exercise Physiology

Background:

  • Osteoarthritis (OA) is a degenerative joint disease characterized by cartilage breakdown and inflammation.
  • Monosodium iodoacetate (MIA) is commonly used to induce OA in animal models for research purposes.
  • Oxidative stress plays a significant role in the pathogenesis of OA.

Purpose of the Study:

  • To investigate the effects of impact exercise on joint cartilage in a rat model of osteoarthritis (OA).
  • To assess biochemical markers of oxidative stress and inflammation in response to exercise in OA.
  • To evaluate the impact of physical training on cartilage integrity and proteoglycan content.

Main Methods:

  • Osteoarthritis was induced in male rats using monosodium iodoacetate (MIA).

Related Experiment Videos

Last Updated: Jun 13, 2026

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats
08:09

Osteoarthritis Pain Model Induced by Intra-Articular Injection of Mono-Iodoacetate in Rats

Published on: May 20, 2020

  • Animals were divided into control, OA, and OA plus exercise (OAE) groups, with the OAE group undergoing treadmill training for 8 weeks.
  • Biochemical analyses (myeloperoxidase, superoxide dismutase, thiol content) and histological evaluations of joint cartilage were performed.

    • Main Results:

    • Increased myeloperoxidase activity was observed in both OA groups.
    • Superoxide dismutase activity was elevated in OA animals, particularly in the exercised group.
    • Thiol content decreased in the OA group but was preserved in the OAE group, which also showed better proteoglycan content in cartilage.

    Conclusions:

    • Physical training, specifically impact exercise, contributes to the preservation of joint cartilage in rats with OA.
    • Exercise enhances the body's defense mechanisms against oxidative stress associated with OA.
    • Treadmill exercise demonstrated a protective effect on cartilage integrity and proteoglycan levels in an OA model.