title: The effect of mesoporphyrin on the production of cytokines by inflammatory cells in vitro.
abstract: This study was conducted to investigate a mechanism of the anti-inflammatory action of mesoporphyrin, especially the effect on the production of cytokines by some cultured inflammatory cells. Mesoporphyrin had no effect on lipopolysaccharide-induced tumor necrosis factor-alpha production by RAW 264.7 cells (murine macrophage-like cells). Mesoporphyrin inhibited interferon-gamma production by 1E10.H2 cells (murine T helper-1 cells), but not interleukin-4 production by D10.G4.1 cells (murine T helper-2 cells). Mesoporphyrin inhibited interleukin-6 production by human osteoblast-like MG-63 cells. This inhibition of interleukin-6 production is closely related to the suppression of prostaglandin E2 generation by interfering cyclooxygenase 1 and 2 enzyme activities. These data suggest that the inhibition of cytokine production is one of the anti-inflammatory mechanisms of mesoporphyrin.
authors.affiliation: Department of Pharmacology, Gifu Pharmaceutical University, Mitahorahigashi, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Takaoka
authors.forename: S
authors.initials: S
authors.lastname: Matsuura
authors.forename: K
authors.initials: K
authors.lastname: Boda
authors.forename: H
authors.initials: H
authors.lastname: Nagai
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology*; D002478:Cells, Cultured; D016207:Cytokines / Q000378:metabolism*; D015232:Dinoprostone / Q000378:metabolism; D006801:Humans; D007249:Inflammation / Q000188:drug therapy / Q000473:pathology; D007371:Interferon-gamma / Q000378:metabolism; D015847:Interleukin-4 / Q000378:metabolism; D015850:Interleukin-6 / Q000378:metabolism; D008214:Lymphocytes / Q000187:drug effects* / Q000276:immunology; D008264:Macrophages / Q000187:drug effects* / Q000276:immunology; D008652:Mesoporphyrins / Q000494:pharmacology*; D051379:Mice; D010006:Osteoblasts / Q000187:drug effects* / Q000276:immunology; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D000893:Anti-Inflammatory Agents; D016207:Cytokines; D015850:Interleukin-6; D008652:Mesoporphyrins; D014409:Tumor Necrosis Factor-alpha; D015847:Interleukin-4; C031468:mesoporphyrin IX; D007371:Interferon-gamma; D015232:Dinoprostone