title: Interaction of Vimang (Mangifera indica L. extract) with Fe(III) improves its antioxidant and cytoprotecting activity.
abstract: A standard aqueous stem bark extract from selected species of Mangifera indica L. (Anacardiaceae)--Vimang, whose major polyphenolic component is mangiferin, displays potent in vitro and in vivo antioxidant activity. The present study provides evidence that the Vimang-Fe(III) mixture is more effective at scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH) and superoxide radicals, as well as in protecting against t-butyl hydroperoxide-induced mitochondrial lipid peroxidation and hypoxia/reoxygenation-induced hepatocytes injury, compared to Vimang alone. Voltammetric assays demonstrated that Vimang, in line with the high mangiferin content of the extract, behaves electrochemically like mangiferin, as well as interacts with Fe(III) in close similarity with mangiferin's interaction with the cation. These results justify the high efficiency of Vimang as an agent protecting from iron-induced oxidative damage. We propose Vimang as a potential therapy against the deleterious action of reactive oxygen species generated during iron-overload, such as that occurring in diseases like beta-thalassemia, Friedreich's ataxia and haemochromatosis.
authors.affiliation: Departamento de Investigaciones Biomédicas, Centro de Química Farmacéutica, Calle 200, Esq. 21, Playa, Ciudad de La Habana, Cuba. g031071@yahoo.com
authors.forename: Gilberto L
authors.initials: GL
authors.lastname: Pardo-Andreu
authors.forename: Carlos
authors.initials: C
authors.lastname: Sánchez-Baldoquín
authors.forename: Rizette
authors.initials: R
authors.lastname: Avila-González
authors.forename: Edgar T Suzuki
authors.initials: ET
authors.lastname: Yamamoto
authors.forename: Andrés
authors.initials: A
authors.lastname: Revilla
authors.forename: Sérgio Akira
authors.initials: SA
authors.lastname: Uyemura
authors.forename: Zeki
authors.initials: Z
authors.lastname: Naal
authors.forename: René
authors.initials: R
authors.lastname: Delgado
authors.forename: Carlos
authors.initials: C
authors.lastname: Curti
mesh_terms: D000818:Animals; D000968:Antimycin A / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000378:metabolism; D015687:Cell Hypoxia / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D016166:Free Radical Scavengers / Q000494:pharmacology*; D022781:Hepatocytes / Q000187:drug effects* / Q000378:metabolism; D006834:Hydrazines / Q000378:metabolism; D007501:Iron / Q000494:pharmacology*; D008297:Male; D031022:Mangifera; D008930:Mitochondria, Liver / Q000187:drug effects / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects; D010851:Picrates; D010936:Plant Extracts / Q000494:pharmacology*; D011748:Pyrogallol / Q000494:pharmacology; D051381:Rats; D017208:Rats, Wistar; D013481:Superoxides / Q000378:metabolism
chemical_list: D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D006834:Hydrazines; C501277:Mangifera indica extract; D010851:Picrates; D010936:Plant Extracts; D011748:Pyrogallol; D013481:Superoxides; D000968:Antimycin A; C004931:1,1-diphenyl-2-picrylhydrazyl; D007501:Iron