... flights twice a day), and how exercise training over many weeks affected this response. We measured multiple components of the antioxidant system: an enzymatic antioxidant (glutathione peroxidase, GPx) and non-enzymatic antioxidants (measured by the OXY-adsorbent test) as well as a measure of oxidative...

... oxygen species that is likely supported by a combination of small molecule antioxidants and a high activity of antioxidant enzyme systems during early development. Catalase Glutathione peroxidase Superoxide dismutase Development Oxygen radical absorbance capacity Organisms dependent...

.... Hydrogen peroxide Energetics Antioxidant Skeletal muscle Oxidative stress Glutathione peroxidase Thioredoxin Peroxiredoxin Summary: Mitochondria are often considered to be a source of harmful reactive oxygen species. Here, we explain how they may behave as regulators of hydrogen peroxide...

... protein 70 (Hsp70) induction, both essential mechanisms of the heat stress response. We exposed snails to elevated temperature (25, 38, 40, 43 and 45°C) in the laboratory and measured the activity of the antioxidant enzymes catalase (CAT) and glutathione peroxidase (GPx), determined the Hsp70 level...

... dismutase and glutathione peroxidase. When exposed to gamma irradiation, a strong oxidative stressor, males that received anoxic conditioning had lower lipid and protein oxidative damage at sexual maturity. Anoxia conditioning led to greater male sexual competitiveness compared with unconditioned males when...

...Adam P. Starrs; Sandra Orgeig; Christopher B. Daniels; Margaret Davies; Olga V. Lopatko SUMMARY The activities of the pulmonary antioxidant enzymes (AOE), superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase, increase in the final 10–20 % of gestation in the mammalian lung...

..., CAT; glutathione peroxidase, GPX) constitutive of the antioxidative arsenal of cells in the tissues of 16 species of meso- and bathypelagic fishes occurring between the surface and a depth of 1300 m. While enzymatic activities were detected in all tissues from all species, the levels of SOD and GPX...