Abstract:ABSTRACT. Leukotrienes may control fetal pulmonary vascular tone since infusions of putative leukotriene receptor antagonists markedly increase pulmonary blood flow and decrease pulmonary vascular resistance in fetal lambs. 'This hypothesis would be strengthened if inhibition of leukotriene synthesis also produced similar hemodynamic changes. We therefore studied the effects of piriprost (U 60257), a putative leukotriene synthesis inhibitor, on thirteen fetal lambs at 137 to 140 days gestation. In preliminary … Show more
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