title: Influence of Coenzyme Q_{10} on release of pro-inflammatory chemokines in the human monocytic cell line THP-1.
abstract: Coenzyme Q_{10} (CoQ_{10}) is an obligatory element in the mitochondrial electron transport system and functions as a potent antioxidant of lipid membranes. In-vivo and in-vitro studies indicate an involvement of CoQ_{10} in inflammatory pathways. Here we studied in the human monocytic cell-line THP-1 the influence of CoQ_{10} on LPS-induced secretion of the pro-inflammatory chemokines Macrophage inflammatory protein-1 alpha (MIP-1alpha), Regulated upon activation, normal T cell expressed and secreted (RANTES) and Monocyte chemoattractant protein-1 (MCP-1). In comparison to unstimulated cells, LPS leads to 22-, 3- and 4.5-fold higher levels of MIP-1alpha, RANTES and MCP-1 in the cell culture medium, respectively. Pre-incubation of cells with 10 microM CoQ_{10} resulted in a significant decrease of LPS-induced MIP-1alpha and RANTES secretion to 55.04% (p = 0.02) and 76.84% (p = 0.04), respectively. In conclusion, CoQ_{10} reduces the LPS-induced secretion levels of the pro-inflammatory chemokines MIP-1alpha and RANTES in the human monocytic cell line THP-1. These data suggest that CoQ_{10} possesses anti-inflammatory properties.
authors.affiliation: Institute of Human Nutrition and Food Science, Molecular Nutrition, Christian-Albrechts-University of Kiel, Germany.
authors.forename: Constance
authors.initials: C
authors.lastname: Schmelzer
authors.forename: Gerti
authors.initials: G
authors.lastname: Lorenz
authors.forename: Gerald
authors.initials: G
authors.lastname: Rimbach
authors.forename: Frank
authors.initials: F
authors.lastname: Döring
mesh_terms: D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D018932:Chemokine CCL2 / Q000378:metabolism; D018925:Chemokines / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008070:Lipopolysaccharides / Q000494:pharmacology; D009000:Monocytes / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D014451:Ubiquinone / Q000031:analogs & derivatives* / Q000494:pharmacology
chemical_list: D018932:Chemokine CCL2; D018925:Chemokines; D008070:Lipopolysaccharides; D014451:Ubiquinone; C024989:coenzyme Q10