Fitzgerald M F, Moncada S, Parente L
Br J Pharmacol. 1986 May;88(1):149-53. doi: 10.1111/j.1476-5381.1986.tb09481.x.
The release of platelet-activating factor (Paf-acether) and of its inactive precursor/metabolite lyso-platelet activating factor (lyso-Paf) from control and sensitized guinea-pig isolated lungs challenged with antigen was investigated. Control guinea-pig lungs perfused either through the pulmonary circulation or through the airways and challenged with antigen did not release Paf-acether. Sensitized guinea-pig isolated lungs perfused through the pulmonary circulation and challenged with antigen released lyso-Paf but not Paf-acether. Sensitized guinea-pig isolated lungs perfused through the airways and challenged with antigen released three times more lyso-Paf and also Paf-acether. These results support a possible role for Paf-acether in respiratory anaphylaxis in the guinea-pig.
研究了对照和致敏豚鼠离体肺在抗原刺激下血小板活化因子(血小板激活因子)及其无活性前体/代谢物溶血血小板激活因子(溶血血小板激活因子)的释放情况。通过肺循环或气道灌注并经抗原刺激的对照豚鼠肺未释放血小板激活因子。经肺循环灌注并经抗原刺激的致敏豚鼠离体肺释放了溶血血小板激活因子,但未释放血小板激活因子。经气道灌注并经抗原刺激的致敏豚鼠离体肺释放的溶血血小板激活因子多三倍,并且还释放了血小板激活因子。这些结果支持血小板激活因子在豚鼠呼吸道过敏反应中可能发挥的作用。