Interference with histamine and imidazole acetic acid metabolism by salicylates: A possible contribution to salicylate analgesic activity? |
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Authors: | M. A. Beaven Zdenka Horakova H. R. Keiser |
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Affiliation: | (1) Pulmonary Branch and Hypertension-Endocrine Branch, National Heart and Lung Institute, National Institutes of Health, Building 10, Room 5N107, 20014 Bethesda, Maryland, USA |
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Abstract: | Summary In man, rats and mice, the urinary excretion of the histamine andl-histidine metabolite, imidazole acetic acid, is increased and that of the conjugated metabolite, ribosylimidazole acetic acid, decreased by small doses of salicylates. In contrast to salicylates, other non-salicylate anti-inflammatory drugs, indomethacin, phenylbutazone, phenacetin and acetaminophen do not influence the excretion of the urinary metabolites of histamine andl-histidine. Since imidazole acetic acid is reported to have analgesic and narcotic activity, there is the inference that the analgesic properties of salicylate might be due in part to interference in imidazole acetic acid metabolism. |
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