conclusions gallic acid and csa combination improved antioxidant capacity and cell membrane integrity more than each one alone. therefore, it can be a therapeutic approach to reduce the i/r injury. background myocardial infarction is one of the important causes of death during old ages. gallic acid as an antioxidant or cyclosporine a (csa) as inhibitor of mitochondrial permeability transition p...

background: there is growing evidence that damage to spermatozoa by reactive oxygen species (ros) play a key role in male infertility. objective: the aim of the present study was to assess the antioxidant status of seminal plasma by measuring total antioxidant capacity (tac) and activities of catalase and superoxide dismutase (sod) in men with asthenozoospermia, asthenoteratozoospermia and olig...

Thirty-seven China wines, produced from different geographical origins, were examined in this study. The antioxidant activity of wines was measured by different analytical methods: oxygen radical absorbance capacity (ORAC), reducing power, 2,2-azino-di-(3-ethylbenzothialozine-sulphonic acid) (ABTS), 2,2diphenyl-1-picrylhydrazyl (DPPH ), hydroxyl radical-scavenger activity, superoxide radical-sc...

Flavonoids and polyphenols from the strawberry and other fruits have been proposed to reduce the oxidative stress produced by the obesity and her complications. Moreover, it has been proposed that irradiation with UV-C to strawberry may increase the antioxidant capacity of this fruit. The aim of the present study was to explore the effects of the UV-C on antioxidant capacity of strawberry in vi...

María E. Hidalgo* and Carlos De la Rosa Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña 1111, Valparaíso, Chile Héctor Carrasco, Wilson Cardona and Claudio Gallardo Facultad de Ecología y Recursos Naturales, Universidad Andrés Bello, Los Fresnos 52, Viña del Mar, Chile Luis Espinoza Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso,...

Sagebrush (Artemisia spp.) in North America is an abundant native plant species that is ecologically and evolutionarily adapted to have a diverse array of biologically active chemicals. Several of these chemicals, specifically polyphenols, have antioxidant activity that may act as biomarkers of biotic or abiotic stress. This study investigated the spatial variation of antioxidant capacity, as w...

Ethanolic extract of leaves of Elaeocarpus ganitrus was analyzed for their total antioxidant capacity, reducing power, metal chelating, ABTS+ (2, 2-azinobis-(3-ethylbenzothiazoline-6-sulphonate) radical scavenging and hydroxyl radical scavenging activities. The extract at 500 ?g/ml showed maximum Iron chelating activity (76.70%) followed by the scavenging of the ABTS+ radical (55.77%) at the sa...

The accurate assessment of oxidative stress in biological systems is a problem for all investigators working on the role of free radical damage in disease. Numerous assays have been described to measure various free radical damage products or antioxidant status, and the plethora of available techniques attests to the fact that no ideal method is available. The concept of a single test that migh...