Metabolism of14C-Histamine Given Intrabronchially to Asthmatic Patients
- 1 January 1980
- Vol. 35 (1) , 31-36
- https://doi.org/10.1111/j.1398-9995.1980.tb01714.x
Abstract
14C-histamine was administered intrabronchially to asthmatic patients and controls. The urinary excretion of total radioactivity, 14C-histamine and its radioactive metabolites was measured. Excretion of total radioactivity was complete within 24 h. The excretion rate was equal to that observed after i.v. injection of 14C-histamine, indicating rapid penetration of the bronchial mucosa. The diuresis seemed to be of importance for the excretion rate. Histamine inactivation by methylation was more pronounced after intrabronchial than after i.v. administration.Keywords
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