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  • Title: The excretion of leukotriene E4 into urine following inhalation of leukotriene D4 by human individuals.
    Author: Verhagen J, Bel EH, Kijne GM, Sterk PJ, Bruynzeel PL, Veldink GA, Vliegenthart JF.
    Journal: Biochem Biophys Res Commun; 1987 Oct 29; 148(2):864-8. PubMed ID: 3689376.
    Abstract:
    Healthy volunteers underwent bronchial challenge with increasing doses of nebulized leukotriene D4 (0.007 - 200 nmol) at 15 min intervals. Total amounts of 200 nmol (females) and 400 nmol (males) were inhaled, corresponding to approximately 100 nmol and 200 nmol deposited in the lung, respectively. Of the latter amounts 3 +/- 1% (mean +/- S.E.M., n = 5) was found to be excreted as leukotriene E4 into the urine within 12 h. No further excretion after this period was observed. Approximately 50% of the total urinary leukotriene E4 was excreted during the first 2 h. These results suggest that a possible formation of sulfidopeptide leukotrienes in the lung in vivo can be monitored by measuring leukotriene E4 excretion into the urine.
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