PMID- 8864132 OWN - NLM STAT- MEDLINE DCOM- 19961204 LR - 20190516 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 60 IP - 4 DP - 1996 Oct TI - The inhibitory effect of prostaglandin E2 on rat neutrophil aggregation. PG - 480-6 AB - Rat peritoneal neutrophils stimulated by N-formyl-methionyl-leucyl-phenylalanine (fMLP) produce an aggregation response that can be inhibited by prostaglandin E2 (PGE2) with an IC50 value of 2.6 x 10(-9) M. Although PGE2 can stimulate [3H]cAMP production in neutrophils (EC50 4.3 x 10(-8) M), the anti-aggregation response cannot be significantly attenuated by inhibitors of adenylate cyclase or protein kinase A, neither can it be potentiated by inhibition of phosphodiesterase activity. Despite these observations, it still remains possible that PGE2-mediated inhibition of rat neutrophil aggregation is a cAMP-dependent response mediated by highly localized changes in neutrophil cAMP. The inhibitory effect of PGE2 does not appear to depend on effects on intracellular calcium or K(ATP) channels. Similarities exist between PGE2 and the profile of activity of phosphatidylinositol 3-kinase (PI 3-kinase) inhibitors, suggesting that PI 3-kinase is a possible target for PGE2 action in rat neutrophils. FAU - Wise, H AU - Wise H AD - Department of Pharmacology, Faculty of Medicine, The Chinese University of Hong Kong. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Androstadienes) RN - 0 (Enzyme Inhibitors) RN - 0 (Isoquinolines) RN - 0 (Phosphodiesterase Inhibitors) RN - 0 (Potassium Channels) RN - 0 (Pyrrolidinones) RN - 0 (Sulfonamides) RN - 17318-31-9 (9-(tetrahydro-2-furyl)-adenine) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) RN - E0399OZS9N (Cyclic AMP) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - EC 2.7.1.- (Phosphotransferases (Alcohol Group Acceptor)) RN - EC 2.7.11.11 (Cyclic AMP-Dependent Protein Kinases) RN - JAC85A2161 (Adenine) RN - K676NL63N7 (Rolipram) RN - K7Q1JQR04M (Dinoprostone) RN - M876330O56 (N-(2-(4-bromocinnamylamino)ethyl)-5-isoquinolinesulfonamide) RN - SX6K58TVWC (Glyburide) RN - XVA4O219QW (Wortmannin) SB - IM MH - Adenine/analogs & derivatives/pharmacology MH - Androstadienes/pharmacology MH - Animals MH - Ascitic Fluid/cytology MH - Cell Aggregation/*drug effects MH - Cells, Cultured MH - Chemotaxis, Leukocyte/drug effects MH - Cyclic AMP/physiology MH - Cyclic AMP-Dependent Protein Kinases/antagonists & inhibitors MH - Dinoprostone/*pharmacology MH - Enzyme Inhibitors/pharmacology MH - Glyburide/pharmacology MH - Isoquinolines/pharmacology MH - Male MH - N-Formylmethionine Leucyl-Phenylalanine/pharmacology MH - Neutrophils/*drug effects MH - Phosphatidylinositol 3-Kinases MH - Phosphodiesterase Inhibitors/pharmacology MH - Phosphotransferases (Alcohol Group Acceptor)/antagonists & inhibitors MH - Potassium Channels/drug effects MH - Pyrrolidinones/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Rolipram MH - *Sulfonamides MH - Wortmannin EDAT- 1996/10/01 00:00 MHDA- 1996/10/01 00:01 CRDT- 1996/10/01 00:00 PHST- 1996/10/01 00:00 [pubmed] PHST- 1996/10/01 00:01 [medline] PHST- 1996/10/01 00:00 [entrez] AID - 10.1002/jlb.60.4.480 [doi] PST - ppublish SO - J Leukoc Biol. 1996 Oct;60(4):480-6. doi: 10.1002/jlb.60.4.480.