Premium
Influence of silymarin and its flavonolignans on doxorubicin‐iron induced lipid peroxidation in rat heart microsomes and mitochondria in comparison with quercetin
Author(s) -
Psotová Jitka,
Chlopčíková Šárka,
Grambal František,
Šimánek Vilím,
Ulrichová Jitka
Publication year - 2002
Publication title -
phytotherapy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.019
H-Index - 129
eISSN - 1099-1573
pISSN - 0951-418X
DOI - 10.1002/ptr.811
Subject(s) - quercetin , dpph , silybum marianum , lipid peroxidation , chemistry , antioxidant , microsome , biochemistry , traditional medicine , pharmacology , rutin , biology , in vitro , medicine
Silymarin, an extract of Silybum marianum seeds, and the constituent flavonolignans silybin, silydianin and silychristin, as well as the flavonol quercetin, protected rat heart microsomes and mitochondria against iron‐dependent doxorubicin induced lipid peroxidation. Quercetin was found to be more potent than either silymarin or its three constituents, whose cytoprotectivity was comparable. The radical scavenging activity of the compounds was investigated using a DPPH colour reduction assay and cyclic voltametry to assess their antioxidant activities. In contrast to quercetin, silybin, silydianin and silychristin did not chelate iron in aqueous solution. The results suggest that silymarin may prevent doxorubicin‐mediated damage to rat heart membrane primarily through a free radical scavenging mechanism. Copyright © 2002 John Wiley & Sons, Ltd.