O'Sullivan, AM,O'Callaghan, YC,O'Grady, MN,Queguineur, B,Hanniffy, D,Troy, DJ,Kerry, JP,O'Brien, NM

2012

January

Food Chemistry

Assessment of the ability of seaweed extracts to protect against hydrogen peroxide and tert-butyl hydroperoxide induced cellular damage in Caco-2 cells

Validated

()

Brown seaweed extract tert-Butyl hydroperoxide Hydrogen peroxide 1,10-Phenanthroline Deferoxamine mesylate BAPTA-AM DNA Comet assay OXIDATIVE STRESS PHENOLIC-COMPOUNDS DNA-DAMAGE IRON BUTYLHYDROPEROXIDE ANTIOXIDANTS CYTOTOXICITY LYMPHOCYTES MECHANISM PREVENT

134

1137

1140

The ability of brown seaweed extracts, Ascophyllum nodosum, Laminaria hyperborea, Pelvetia canaliculata, Fucus vesiculosus and Fucus serratus to protect against tert-butyl hydroperoxide (tert-BOOH) induced stress in Caco-2 cells was investigated. Oxidative stress was determined by measuring alteration in the enzymatic activity of catalase (CAT) and superoxide dismutases (SOD) and cellular levels of glutathione (GSH). L. hyperborea, P. canaliculata and F. serratus significantly protected against tert-BOOH induced SOD reduction but did not protect against the reduction in CAT activity or the increased cellular levels of GSH. The ability of F. serratus and F. vesiculosus to protect against H2O2 and tert-BOOH induced DNA damage was also assessed. The DNA protective effects of the two seaweed extracts was compared to those of three metal chelators; deferoxamine mesylate (DFO), 1,10-phenanthroline (o-phen) and 1,2-Bis(2-aminophenoxy)ethane-N.N.N',N'-tetraacetic acid tetrakis (BAPTA-AM). F. serratus and F. vesiculosus significantly protected (P < 0.05) against H2O2 (50 mu M) induced DNA damage but not tert-BOOH induced damage. (C) 2012 Elsevier Ltd. All rights reserved.

DOI 10.1016/j.foodchem.2012.02.205