Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0003873 (rheumatoid arthritis)
 53,068 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The pharmacokinetics of fenbufen (3,4-biphenylcarbonyl proprionic acid) a new antiinflammatory agent, and its metabolites, gamma-hydroxy-4-biphenylbutyric acid and 4-biphenylacetic acid have been studied after oral administration to seven patients with rheumatoid arthritis. Fenbufen was administered as a single oral dose of 600 mg in hard gelatine capsules. A specific, sensitive gas chromatographic method was used to measure the concentration of the three compounds. A linear two-compartment open model appeared suitable to describe the course of the plasma level of fenbufen with time. This compound appeared in the blood after a lag time of 0.45 h and the peak plasma concentration of 5.97 micrograms/ml was observed after 1.19 h. The half-life of plasma disappearance was 10.26 h for fenbufen and 10.07 h and at 9.95 for metabolites II and III, respectively.
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PMID:Pharmacokinetics of fenbufen in man. 31 14

A 12-week double-blind crossover trial compared fenbufen and indomethacin in 40 patients with rheumatoid arthritis. Fenbufen (600-800 mg/day) was significantly superior to indomethacin (75-100 mg/day) in improving the physical measurements of rheumatoid arthritis activity. Twenty-four patients who demonstrated marked or moderate improvement in the double-blind study participated in a 14-week single-blind study. After one week on placebo, patients received either fenbufen once a day at bedtime, fenbufen twice a day, or indomethacin three times a day for 12 weeks, followed by 2 weeks of placebo. All three treatment groups demonstrated significant improvement. The two fenbufen groups were significantly superior to indomethacin in improving the physical measurements of rheumatoid arthritis activity. No significant differences were found between the two fenbufen treatment groups. Drug-related side-effects reported during both studies were significantly fewer with fenbufen than with indomethacin.
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PMID:A comparative clinical trial of fenbufen and indomethacin in patients with rheumatoid arthritis. 80 Mar 81

Fenbufen and indomethacin were compared in the treatment of 30 patients with rheumatoid arthritis. In a randomized, double-blind crossover study patients received 75 mg of indomethacin daily or 600 mg of fenbufen daily for six weeks and then were treated with the alternate regimen for a similar period. The drugs were equally efficacious. The erythrocyte sedimentation rate of patients who had received fenbufen was significantly lower than that of patients who had received indomethacin. More side effects were reported by the indomethacin-treated patients. A further 24-week open evaluation of fenbufen in rheumatoid patients indicated that fenbufen is a useful anti-inflammatory analgesic in the long-term management of mild and moderate rheumatoid arthritis.
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PMID:Fenbufen and indomethacin: a comparative study in rheumatoid arthritis. 634 84

Fenbufen (Cinopal) has been evaluated extensively in 155 clinical trials, including 102 in rheumatoid arthritis and 53 in osteoarthritis. Forty-nine of these trials involving 12 protocols have been identified as pivotal. All 12 protocols (six rheumatoid arthritis and six osteoarthritis) were double-blind and controlled, with the duration of treatment ranging from four weeks to one year, and included sufficient patient populations to detect important differences in efficacy between fenbufen and the reference agents. Evaluation of the efficacy results was based on the standard parameters commonly measured for rheumatoid arthritis and osteoarthritis. The primary evaluation point was the end of four weeks of therapy. Results of the 49 studies employing the 12 pivotal protocols, demonstrated that fenbufen, given in divided daily doses of 600 to 1,000 mg, provided significant anti-inflammatory effects. These effects were superior to placebo and comparable to those attained with full therapeutic doses of aspirin, indomethacin, phenylbutazone, and ozyphenbutazone. Long-term trials provided important information as to the relative effectiveness and tolerance of fenbufen in the management of patients with rheumatoid arthritis and osteoarthritis. The proportion of fenbufen-treated patients able to continue long-term therapy was substantially greater than the proportion of aspirin-, indomethacin-, or placebo-treated patients. Results from these trials indicate that fenbufen provides a more favorable ratio of benefit to risk than either aspirin or indomethacin.
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PMID:Overview of efficacy of fenbufen in rheumatoid arthritis and osteoarthritis. 635 11

To date, the efficacy and safety of gamma-oxo(1,1'-biphenyl)-4-butanoic acid (fenbufen) have been evaluated in over 200 clinical trials involving several thousand patients. The program of clinical investigation consisted of open dose ranging studies in patients; short-term, double-blind controlled studies of both cross-over and parallel group design to evaluate efficacy and safety compared to placebo and active reference drugs; long-term, double-blind controlled studies of parallel group design versus an active reference agent; open studies to evaluate the long-term efficacy and safety of fenbufen; and special studies to investigate possible effects on eyes, ears and heart. The overall experience with fenbufen in 60 US and 37 foreign clinical trials is summarized in this report with respect to the following: therapeutic efficacy and safety in rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, analgesia and gout. The age range covered in these studies was 13 to 87 years, and included 206 patients over the age of 70. 3457 patients received fenbufen in all phases of these clinical trials, including short-term and long-term studies. The patient total includes: 1462 patients (664 US, 798 foreign) with rheumatoid arthritis, 1225 (420 US, 805 foreign) with osteoarthritis, 55 (19 US, 36 foreign) with ankylosing spondylitis, 39 (foreign) with gout, and 676 patients (103 US, 573 (foreign) who participated in analgesia studies. The worldwide clinical studies have demonstrated very good clinical efficacy of fenbufen in comparison to other non-steroidal antirheumatic (nsa) drugs. The tolerance was much better in many cases compared with tolerance levels of other nsa-drugs. The good results were confirmed by new papers presented during IX International Congress of Rheumatology, Wiesbaden/FR Germany, September 1979. Fenbufen is currently marketed in Brazil, Columbia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Great Britain, Greece, Guatemala, Honduras, Ireland, Italy, Japan, South Korea, Mexico, Nicaragua, Panama, Peru, Philippines, Rhodesia, Spain, South Africa, Switzerland, Trinidad and FR Germany.
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PMID:A survey of clinical trials with fenbufen. 700 63

Fenbufen is a phenylalkanoic acid derivative with analgesic and anti-inflammatory activity. The anti-inflammatory activity appears to reside in the metabolites. Published data indicate that fenbufen 600 to 1000mg daily is comparable in effectiveness to therapeutic doses (3 to 4g) of aspirin, indomethacin (75 to 100mg) or phenylbutazone (300 to 400mg) in rheumatoid arthritis, but generally causes fewer side effects. At a daily dosage of 600mg, fenbufen is comparable with aspirin 3.6g or indomethacin 75mg in osteoarthritis. Initial studies suggest that fenbufen 600 to 900mg daily is at least as effective as ibuprofen 1200 to 1800mg of fenoprofen 1800 to 2400mg daily. It has not been compared with naproxen or sulindac in adequate numbers of patients. Fenbufen is effective when given twice daily and there is some evidence that once daily dosage is adequate in known responders to the drug. As with other non-steroidal alkanoic acid drugs, gastrointestinal complaints are the most frequently reported side effects, but there have been no reports of peptic ulcer to date.
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PMID:Fenbufen: a review of its pharmacological properties and therapeutic use in rheumatic diseases and acute pain. 700 35

Fenbufen (3(4-biphenyl-carbonyl) propionic acid) (Cinopal; Lederle) was administered as a single daily dose of 1000 mg for 4 weeks to 20 patients with rheumatoid arthritis. At 2 weeks, and again at the end of the trial, patients were assessed for duration of morning stiffness, number of painful and/or swollen joints, grip strength, walking time, and subjective response to treatment. Four patients failed to complete the trial, 2 because of inability to control symptoms and 2 because of severe rash attributed to the drug. The remaining 16 patients showed some improvement in most of the recorded parameters, with statistically significant reduction of morning stiffness and walking time. Apart from a maculopapular rash, which occurred in 4 patients and cleared up on stopping the fenbufen, side-effects were minimal. No patient complained of dyspepsia or epigastric pain.
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PMID:Fenbufen as a single daily dose in the treatment of rheumatoid arthritis. 702 59