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  • Title: Immunopharmacological actions of the new antiallergic drug butyl 3'-(1H-tetrazol-5-yl)oxanilate. 3rd communication: inhibitory effects on histamine release from lung fragments, Schultz-Dale reaction in isolated tracheal muscle and experimental asthma in guinea pigs.
    Author: Yanagihara Y, Abe T, Kuroda T, Shida T.
    Journal: Arzneimittelforschung; 1988 Jan; 38(1):80-3. PubMed ID: 2452640.
    Abstract:
    The inhibitory effects of butyl 3'-(1H-tetrazol-5-yl) oxanilate (WP-833), a new antiallergic drug, on histamine release from lung fragments, Schultz-Dale (SD) reaction in isolated tracheal muscle and experimental asthma were investigated in guinea pigs passively sensitized with homologous immunoglobulin E (IgE) serum. WP-833 dose-dependently inhibited antigen-induced histamine release from lung fragments. In addition, synergism as to inhibition of histamine release was observed with a combination of WP-833 and isoprenaline but not with that of WP-833 and theophylline. WP-833 also inhibited antigen-mediated SD reaction of isolated tracheal muscle without showing antagonistic actions upon histamine- and leukotriene D4-induced contraction of normal tracheal muscle. Experimental asthma was clearly inhibited in a dose-dependent fashion by oral administration of WP-833.
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