title: The role of aminochromes in ultraweak luminescence accompanying oxidative metabolism of catecholamines in model systems in vitro.
abstract: Ultraweak luminescence (UWL) accompanying oxidative transformations of catecholamines (CA) into melanins, particularly adrenaline and noradrenaline in the model system CA + Fe(CN)6(3-) + OH(-) + H2O2 in vitro was investigated by spectroscopic methods. Separate steps of the oxidative transformations from CA to melanins were analyzed with respect to their energetic/spectroscopic properties in order to evaluate the possibility of chemiexcitation and light emission. Results of experiments with pure adrenochrome + H2O2 + OH- provided evidence pointing to the key role of the interaction between aminochromes and active oxygen species.
authors.affiliation: Department of Physics, Agricultural University, Poznan, Poland.
authors.forename: D
authors.initials: D
authors.lastname: Slawinska
authors.forename: J
authors.initials: J
authors.lastname: Slawinski
mesh_terms: D000323:Adrenochrome / Q000737:chemistry / Q000378:metabolism; D002395:Catecholamines / Q000737:chemistry / Q000378:metabolism*; D004837:Epinephrine / Q000737:chemistry / Q000378:metabolism; D007202:Indicators and Reagents; D008163:Luminescent Measurements; D008954:Models, Biological; D009638:Norepinephrine / Q000737:chemistry / Q000378:metabolism; D010084:Oxidation-Reduction; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002395:Catecholamines; D007202:Indicators and Reagents; D000323:Adrenochrome; D009638:Norepinephrine; D004837:Epinephrine