Phenylprenazone in osteoarthritis.

Curr Ther Res Clin Exp

Published: February 1973

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Feprazone Mitigates IL-1β-Induced Cellular Senescence in Chondrocytes.

ACS Omega

April 2021

Department of Orthopaedics, Fuzhou Second Hospital of Xiamen University, No. 47 Shangteng Road, Cangshan District, Fuzhou, Fujian 350007, China.

The proinflammatory cytokine interleukin-1 β (IL-1β)-mediated cellular senescence in chondrocytes is involved in the development and pathological progression of osteoarthritis (OA). Feprazone, a nonsteroidal anti-inflammatory drug (NSAID) and a cyclooxygenase (COX) inhibitor, is widely used in clinics. This study aims to investigate whether Feprazone has a protective effect against IL-1β-induced cellular senescence in human chondrocytes.

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Nimesulide is a new non-steroidal anti-inflammatory analgesic agent given orally or rectally on a twice daily basis in a number of inflammatory and pain states. Although still at an early stage of clinical assessment, preliminary evidence suggests that nimesulide 200 to 400mg daily is significantly more effective than placebo in reducing the pain, fever and inflammatory symptoms of chronic rheumatoid arthritis or osteoarthritis, respiratory tract infections, otorhinolaryngological diseases, soft tissue and oral cavity inflammation, dysmenorrhoea, phlebitis/thrombosis, urogenital disease and postoperative pain states. In a number of comparative studies, nimesulide has also been shown to be more effective than piroxicam (in osteoarthritis), paracetamol (acetaminophen) [in respiratory tract inflammation], benzydamine or naproxen (in otorhinolaryngological disease), phenylprenazone (in laryngotracheitis/bronchitis, respiratory inflammation and otorhinolaryngological disease), Serratia peptidases (in postoperative or dental pain, trauma and phlebitis), ketoprofen (in postoperative dental pain) and mefenamic acid (in dysmenorrhoea).

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In a double-blind crossover trial, 200 mg feprazone 3-times a day was compared with 200 mg twice a day in the treatment of osteoarthritis. There was no difference in clinical efficacy or in adverse effects between the two dosage schedules. Because of its long elimination half-life (approximately 24 hours) it is suggested that feprazone should be given in twice daily dosage and is a simple and effective treatment for osteoarthritis.

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The so-called non-steroid antirheumatics have considerable significance in medical armamentarium for controlling polyetiological complexes of diseases. The numerous new developments are designed to reduce the side effects, some of which seem inevitable with increased efficacy. In this two-part study the authors deal with the new Feprazone.

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Long-term safety and efficacy of feprazone (4-prenyl-1,2-diphenyl-3,5-pyrazolidinedione), an antirheumatic drug that is well tolerated in the gastrointestinal tract, were assessed in a noncontrolled multicenter trial. Administered at a daily dosage of 600 mg for a mean duration of 114.1 days, feprazone was well tolerated by 43 (77%) of 56 treated subjects.

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