title: Interactions between cytokines and eicosanoids: a study using human peritoneal macrophages.
abstract: To examine the interactions between the main pro-inflammatory cytokines and eicosanoids produced by human inflammatory cells, human peritoneal macrophages (hp-M phi) were isolated from ascitic fluid of patients with portal hypertension. Interactions between interleukin-1 beta (IL-1 beta), IL-6, tumor necrosis factor alpha (TNF-alpha), leukotriene B4 (LTB4) and prostaglandin E2 (PGE2) were studied by addition or inhibition of several cytokines and eicosanoids: human recombinant IL-1 beta (hrIL-1 beta) addition, LTB4 addition and 5-lipoxygenase inhibition (6-hydroxy-2-(4-sulfamoylbenzylamino)-4,5,7-trimethylbenzothiaz ole hydrochloride (E6080)), PGE2 addition and cyclooxygenase inhibition (indomethacin). In hp-M phi hrIL-1 beta stimulated the LTB4 production, while the PGE2 production was inhibited. HrIL-1 beta had no significant effect on IL-6 production in hp-M phi. LTB4 did not regulate IL-1 beta and IL-6 production. Increasing PGE2 down regulated the TNF-alpha production, but did not effect the IL-1 beta and IL-6 production.
authors.affiliation: Department of Pharmacology, Erasmus University, Rotterdam, The Netherlands.
authors.forename: W M
authors.initials: WM
authors.lastname: Pruimboom
authors.forename: J A
authors.initials: JA
authors.lastname: van Dijk
authors.forename: C J
authors.initials: CJ
authors.lastname: Tak
authors.forename: I
authors.initials: I
authors.lastname: Garrelds
authors.forename: I L
authors.initials: IL
authors.lastname: Bonta
authors.forename: P J
authors.initials: PJ
authors.lastname: Wilson
authors.forename: F J
authors.initials: FJ
authors.lastname: Zijlstra
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016861:Cyclooxygenase Inhibitors / Q000494:pharmacology; D016207:Cytokines / Q000378:metabolism*; D015232:Dinoprostone / Q000378:metabolism; D015777:Eicosanoids / Q000378:metabolism*; D005260:Female; D006801:Humans; D007375:Interleukin-1 / Q000378:metabolism; D015850:Interleukin-6 / Q000378:metabolism; D007975:Leukotriene B4 / Q000378:metabolism; D016859:Lipoxygenase Inhibitors / Q000494:pharmacology; D017737:Macrophages, Peritoneal / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D016861:Cyclooxygenase Inhibitors; D016207:Cytokines; D015777:Eicosanoids; D007375:Interleukin-1; D015850:Interleukin-6; D016859:Lipoxygenase Inhibitors; D014409:Tumor Necrosis Factor-alpha; D007975:Leukotriene B4; D015232:Dinoprostone