Abstract

In order to investigate the mechanism of dipalmitoylphosphatidylcholine (DPPC, L-α-lecithin) stimulation of the prostaglandin E (PGE) production of the amniotic membrane, effects of DPPC (50–800 μ g/ml) on phospholipase A2 (PLA2), phospholipase C (PLC), PG endoperoxide synthase, and PGE synthase activities of human amniotic membrane were studied. Only PLA2 activity was increased by DPPC, suggesting that lecithin, the major surfactant component, increases the PGE production of the amniotic membrane by activating PLA2.

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