Development and pharmacological characterization of a rat model of osteoarthritis pain

James D. Pomonis, Jamie M. Boulet, Susan L. Gottshall, Steve Phillips, Rani Sellers, Tracie Bunton, Katharine Walker

Research output: Contribution to journalArticle

187 Citations (Scopus)

Abstract

Osteoarthritis (OA) is an age-related joint disease characterized by degeneration of articular cartilage and is associated with chronic pain. Although several experimental models of OA have been employed to investigate the underlying etiologies of the disease, there has been relatively little investigation into development of animal models of OA to study the pain associated with the condition. In the present study, we investigated OA induced by injection of either iodoacetate or papain into the knee joint of rats, and assessed the joint degeneration with radiographic analyses and measured pain behavior using hind limb weight bearing. We found that injection of iodoacetate, but not papain, resulted in a chronic joint degeneration as measured by decreased bone mineral content and bone mineral density, necrosis of articular cartilage and osteophyte formation. These pathological changes were associated with pain that manifested as time- and concentration-dependent alterations in hind limb weight bearing. These alterations in hind limb weight bearing were reversed with morphine, but were not significantly affected by acute administration of either indomethacin or celecoxib. However, administration of 30 mg/kg celecoxib twice daily for 10 days resulted in a significant restoration of hind limb weight bearing. We conclude that the iodoacetate model of OA is a relevant animal model to study pain associated with OA, and can be used to test potential therapeutic agents.

Original languageEnglish (US)
Pages (from-to)339-346
Number of pages8
JournalPain
Volume114
Issue number3
DOIs
StatePublished - Apr 2005
Externally publishedYes

Fingerprint

Osteoarthritis
Celecoxib
Weight-Bearing
Pharmacology
Iodoacetates
Pain
Extremities
Papain
Articular Cartilage
Bone Density
Animal Models
Joints
Osteophyte
Injections
Joint Diseases
Knee Joint
Indomethacin
Chronic Pain
Morphine
Theoretical Models

Keywords

  • Arthritis
  • COX-2
  • Iodoacetate
  • Radiographic analysis
  • Weight-bearing

ASJC Scopus subject areas

  • Clinical Neurology
  • Psychiatry and Mental health
  • Neurology
  • Neuroscience(all)
  • Pharmacology
  • Clinical Psychology

Cite this

Pomonis, J. D., Boulet, J. M., Gottshall, S. L., Phillips, S., Sellers, R., Bunton, T., & Walker, K. (2005). Development and pharmacological characterization of a rat model of osteoarthritis pain. Pain, 114(3), 339-346. https://doi.org/10.1016/j.pain.2004.11.008

Development and pharmacological characterization of a rat model of osteoarthritis pain. / Pomonis, James D.; Boulet, Jamie M.; Gottshall, Susan L.; Phillips, Steve; Sellers, Rani; Bunton, Tracie; Walker, Katharine.

In: Pain, Vol. 114, No. 3, 04.2005, p. 339-346.

Research output: Contribution to journalArticle

Pomonis, JD, Boulet, JM, Gottshall, SL, Phillips, S, Sellers, R, Bunton, T & Walker, K 2005, 'Development and pharmacological characterization of a rat model of osteoarthritis pain', Pain, vol. 114, no. 3, pp. 339-346. https://doi.org/10.1016/j.pain.2004.11.008
Pomonis JD, Boulet JM, Gottshall SL, Phillips S, Sellers R, Bunton T et al. Development and pharmacological characterization of a rat model of osteoarthritis pain. Pain. 2005 Apr;114(3):339-346. https://doi.org/10.1016/j.pain.2004.11.008
Pomonis, James D. ; Boulet, Jamie M. ; Gottshall, Susan L. ; Phillips, Steve ; Sellers, Rani ; Bunton, Tracie ; Walker, Katharine. / Development and pharmacological characterization of a rat model of osteoarthritis pain. In: Pain. 2005 ; Vol. 114, No. 3. pp. 339-346.
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