title: Interleukin-1beta stimulates cyclic GMP efflux in brain astrocytes.
abstract: In rat brain astroglia-enriched cultures long-term treatment with interleukin-1beta induces NO release and stimulation of soluble guanylyl cyclase. The cGMP formed is recovered in the extracellular medium but not in the cell monolayer. The interleukin-1beta effect is mediated by type I receptor and potentiated by interferon-gamma. In cells treated with bacterial endotoxin a larger NO-dependent cGMP accumulation occurs only intracellularly, however a significant cGMP egression is observed when cells are co-treated with interleukin-1beta. The non-selective anion transport inhibitors probenecid and verapamil block cGMP efflux, indicating that interleukin-1beta stimulates a cGMP transporter.
authors.affiliation: Instituto de Biotecnología y Biomedicina 'V. Villar Palasí' and Departamento de Bioquímica y Biología Molecular, Universidad Autónoma de Barcelona, Bellaterra (Barcelona), Spain.
authors.forename: C E
authors.initials: CE
authors.lastname: Pedraza
authors.forename: M A
authors.initials: MA
authors.lastname: Baltrons
authors.forename: A
authors.initials: A
authors.lastname: García
mesh_terms: D000818:Animals; D001253:Astrocytes / Q000187:drug effects / Q000378:metabolism*; D001692:Biological Transport / Q000187:drug effects; D001921:Brain / Q000166:cytology* / Q000378:metabolism; D002478:Cells, Cultured; D006152:Cyclic GMP / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000494:pharmacology; D006162:Guanylate Cyclase; D007375:Interleukin-1 / Q000378:metabolism / Q000494:pharmacology*; D008070:Lipopolysaccharides / Q000494:pharmacology; D009569:Nitric Oxide / Q000378:metabolism; D019001:Nitric Oxide Synthase / Q000037:antagonists & inhibitors / Q000187:drug effects / Q000378:metabolism; D010069:Oxadiazoles / Q000494:pharmacology; D011339:Probenecid / Q000494:pharmacology; D011810:Quinoxalines / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley; D018160:Receptors, Cytoplasmic and Nuclear / Q000037:antagonists & inhibitors / Q000187:drug effects / Q000378:metabolism; D000071756:Soluble Guanylyl Cyclase; D014700:Verapamil / Q000494:pharmacology; D019323:omega-N-Methylarginine / Q000494:pharmacology
chemical_list: C095284:1H-(1,2,4)oxadiazolo(4,3-a)quinoxalin-1-one; D004791:Enzyme Inhibitors; D007375:Interleukin-1; D008070:Lipopolysaccharides; D010069:Oxadiazoles; D011810:Quinoxalines; D018160:Receptors, Cytoplasmic and Nuclear; D019323:omega-N-Methylarginine; D009569:Nitric Oxide; D014700:Verapamil; D019001:Nitric Oxide Synthase; D006162:Guanylate Cyclase; D000071756:Soluble Guanylyl Cyclase; D006152:Cyclic GMP; D011339:Probenecid