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  • Title: [Inhibitory effect of 2-(2-fluoro-4-biphenylyl)propionic acid (Flurbiprofen) on prostaglandin synthesis].
    Author: Masumoto S, Masuda C.
    Journal: Nihon Yakurigaku Zasshi; 1976 Nov; 72(8):1025-31. PubMed ID: 1035562.
    Abstract:
    Inhibitory effects of 2-(2-fluoro-4-biphenylyl) propionic acid (Flurbiprofen, FP-70) on prostaglandin (PG) synthesis and PG activity were investigated both in vivo and in vitro. FP-70 at 0.64 micronM showed 50% inhibitory effect on PG synthesis from arachidonic acid in cell-free homogenate of guinea pig lung. PGE2 and PGF2alpha in the sample of lung homogenate incubated with arachidonic acid were separated by thin-layer chromatography in solvent AI system. FP-70 inhibited strongly both synthesis of PGE2 and PGF2alpha at 3 micron, but inhibited more extensively the synthesis of PGE2 than that of PGF2alpha at 0.3 micronM. FP-70 at 1 mg/kg, p.o. inhibited mostly arachidonic acid potentiation of carrageenin-induced edema in the rat paw, but did not inhibit PGE2 potentiation of carrageenin-induced edema. FP-70 also did not inhibit the contraction of rat stomach strip induced by PGE2. From the above and previously5) reported results, FP-70 proved to inhibit PG synthesis but not PG activity. It is suggested that the potent anti-inflammatory action of FP-70 is the result of inhibition of PG synthesis.
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