Paws on pain
Canines experience osteoarthritis similar to humans, and studies testing therapeutics in companion animals can provide valuable support for clinical trials. Robertson-Plouch and colleagues evaluated efficacy of inhibitors of the prostaglandin E (PGE) pathway in reducing pain in dogs with spontaneously occurring osteoarthritis. A microsomal PGE synthase-1 inhibitor showed promising results for reducing pain scores compared to a nonsteroidal anti-inflammatory targeting cyclooxygenase-2 and a downstream antagonist of the E-type prostanoid receptor 4, although consistent superiority compared to placebo did not reach the study’s predetermined threshold. Results from this proof-of-concept study support further investigation of microsomal PGE synthase-1 inhibition for analgesia.
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