Hypothesis Open Access

CJ-023,423 (Grapiprant) a Potential Novel Active Compound with Antihyperalgetic Properties for Veterinary Patients

Mario Giorgi1
  • 1 University of Pisa, Italy


Companion animals are now living longer and so are more commonly manifesting age- and pain-related disease. Nonsteroidal anti-inflammatory drugs are the most used drug in osteoarthritis and inflammatory pain of various aetiologies. Despite their safety profiles have been amended from the COX-non selective to the COX-2 selective inhibitor class, some adverse effects are still of concern especially in long term treatments. One prostaglandin (PG) downstream from the cyclooxygenase enzyme, PGE2, has been recognized as a pivotal mediator of pain and inflammation. The actions of PGE2 are produced by its interaction with four G-protein coupled receptors (EP1, EP2, EP3 and EP4). The EP4 receptor mediates PGE2-elicited sensitization of sensory neurons and studies have demonstrated that EP4 is a major receptor in mediating pain associated with both rheumatoid and osteoarthritis and in inflammation. CJ-023,423 (grapiprant) is a competitive antagonist of human and rat prostanoid EP4 receptors, under development for the control of pain and inflammation associated with osteoarthritisfor use in humans and dogs. A recent study has shown the good safety profile of this active ingredient in dogs. Despite this molecule is still far to be marketed because it pharmacokinetic/pharmacodynamics profile is need to be fully elucidated yet, it might be an interesting active ingredient for the veterinary medicine.

American Journal of Animal and Veterinary Sciences
Volume 10 No. 2, 2015, 53-56

DOI: https://doi.org/10.3844/ajavsp.2015.53.56

Submitted On: 23 December 2014 Published On: 14 May 2015

How to Cite: Giorgi, M. (2015). CJ-023,423 (Grapiprant) a Potential Novel Active Compound with Antihyperalgetic Properties for Veterinary Patients. American Journal of Animal and Veterinary Sciences, 10(2), 53-56. https://doi.org/10.3844/ajavsp.2015.53.56

  • 22 Citations



  • Anti-Inflammatory
  • EP4 Receptor
  • Novel Active Compound
  • Veterinary Medicine