title: The interaction between two antioxidants, sodium ascorbate and gallic acid: radical intensity and apoptosis induction.
abstract: ESR spectroscopy revealed that both the radical intensity and degradation rate of sodium ascorbate were increased with increasing pH. Gallic acid significantly reduced the radical intensity of sodium ascorbate, which in turn reduced the radical intensity of gallic acid. Sodium ascorbate inhibited the apoptosis-inducing activity of gallic acid, and gallic acid inhibited the intracellular incorporation of ascorbic acid. These data suggest that interaction between sodium ascorbate and gallic acid might modify their biological activity.
authors.affiliation: First Department of Biochemistry, School of Medicine, Showa University, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Sakagami
authors.forename: K
authors.initials: K
authors.lastname: Satoh
mesh_terms: D000975:Antioxidants / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D001205:Ascorbic Acid / Q000378:metabolism / Q000494:pharmacology*; D004347:Drug Interactions; D004578:Electron Spin Resonance Spectroscopy; D016166:Free Radical Scavengers / Q000494:pharmacology; D005609:Free Radicals / Q000378:metabolism; D005707:Gallic Acid / Q000378:metabolism / Q000494:pharmacology*; D018922:HL-60 Cells / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D007700:Kinetics
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D005609:Free Radicals; D005707:Gallic Acid; D001205:Ascorbic Acid