The purpose of this study is to evaluate the effects of different prostaglandin derivatives on protein and glycoprotein synthesis and secretion in isolated and enriched pig gastric mucous cells, as measured by the incorporation of [3H]L-leucine and N-acetyl-[14C]D-glucosamine respectively into acid insoluble macromolecules (AIM). PGE2 and 16,16-dimethyl-PGE2 enhanced the incorporation of the amino sugar into cellular (EC50 8 and 75 nmol/l) and secreted (EC50 30 and 270 nmol/l) AIM in a concentration dependent manner during a 20 hours incubation. After incubation for eight hours or more they also stimulated the incorporation of [3H]L-leucine into cellular AIM. PGF2 alpha was considerably less potent (EC50 greater than 1 mumol/l) than the E-type prostaglandins. Iloprost, a stable prostacyclin analogue, was ineffective.
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