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  • Title: [Anti-inflammatory effects of prednisolone 17-valerate 21-acetate, a new topical corticosteroid (author's transl)].
    Author: Wada Y, Etoh Y, Ohira A, Ikuta J, Kato Y, Sano N.
    Journal: Nihon Yakurigaku Zasshi; 1980 Sep; 76(5):333-45. PubMed ID: 7203275.
    Abstract:
    Anti-inflammatory activities of prednisolone 17-valerate 21-acetate(PVA) were studied in rats and guinea pigs and results compared with data on topical steroids, such as betamethasone 17-valerate(BV) and hydrocortisone 17-butyrate(HB). PVA given subcutaneously inhibited dose-dependently carrageenin- and kaolin-induced edema. These anti-inflammatory activities of PVA were the weakest among the steroids tested. A local administration of PVA into the site of inflammation, however, had the same or more potent activities than BV and HB in carrageenin-induced edema and paper disk granuloma. Topical application of PVA ointment in carrageenin-induced edema exhibited an inhibitory effect which was dependent on the concentrations (0.1-1.0%). The anti-inflammatory activity of 0.3% PVA ointment was equivalent to that of 0.12% BV ointment. For the other experimental models, i.e. exuberant granulation, croton oil-induced ear edema, passive cutaneous anaphylaxis and tuberculin-induced delayed type hypersensitivity, the activity of 0.3% PVA ointment was the same or somewhat more potent than 0.12% BV and 0.1% HB ointments. The thymolytic activity of PVA ointment in the exuberant granulation model was similar to the activity seen with HB ointment and weaker than of BV ointment. Thus, the anti-inflammatory activities of PVA were equivalent to or more potent than those of BV and HB, and with topical application, the systemic effect of PVA was weaker than the other steroids examined.
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