BACKGROUND Oxidative stress plays a role in the pathophysiology of several diseases and has been documented as a contributor to disease in both the human and veterinary literature. One at-risk cell is the erythrocyte, however, the role of oxidative stress in anemia in dogs has not been widely investigated. HYPOTHESIS/OBJECTIVE Anemic dogs will have an alteration in the activity of glutathione...

The physiological status of poultry can be disturbed by different stressors that may lead to oxidative stress conditions. Oxidative activates defense systems, which mitigates the adverse effects. Several lines system exist, including enzyme systems such as catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and non-enzymatic antioxidants Glutathione (GSH). Methionine—a vit...

An imbalance between pro-oxidants and antioxidants occurs in cells due to oxidative stress (Nazıroğlu, 2007). Oxidative stress leads to atherosclerosis, inflammation, ischemia-reperfusion injury, gene mutation, carcinogenesis, and tissue injury (Halliwell, 2014). Among the antioxidant enzymes glutathione S-transferase (GST) and Glutathione Peroxidase (GPx) are prominent. Glutathione S-transfera...

The 12-lipoxygenase pathway of arachidonic acid metabolism in platelets and other cells is bifurcated into a reduction route yielding 12-hydroxyeicosatetraenoic acid (12-HETE) and an isomerization route forming hepoxilins. Here we show for the first time the presence of phospholipid hydroperoxide glutathione peroxidase (PHGPx) protein and its activity in platelets. The ratio of the activity of ...

Fluoxetine is an antidepressant widely used to treat depressive and anxiety states. Due its mode of action in the central nervous system (selective serotonin reuptake inhibitor (SSRI)), it becomes toxic non-target organisms, leading changes that are harmful their survival. In this work, effects fluoxetine on juvenile zebrafish (Danio rerio) were evaluated, assessing biochemical (phase II biotra...

Recently, we have put forward the hypothesis that a decreased concentration of reduced glutathione (GSH) may be implicated in the mechanisms of peroxidative damage to the liver and kidney caused by lead (Pb) and/or ethanol (EtOH). Thus, the aim of the present study was to assess the activities of GSH-related enzymes, such as glutathione peroxidase (GPx), glutathione reductase (GR), and glutathi...

mammea africana sabine (guttiferae) stembark, a common plant, traditionally used to treat various diseases and ailments was evaluated for hepatoprotective potentials against paracetamol- induced liver injury in rats. the hepatoprotective effect of the stembark extract (30-90 mg/kg) was evaluated by the assay of liver function parameters: total and direct bilirubin, serum protein and albumin, to...

Esworthy, R. Steven, Jeffrey R. Mann, Mindy Sam, and Fong-Fong Chu. Low glutathione peroxidase activity in Gpx1 knockout mice protects jejunum crypts from g-irradiation damage. Am J Physiol Gastrointest Liver Physiol 279: G426–G436, 2000.—Gpx1 knockout (KO) mice had a higher number of regenerating crypts in the jejunum than did Gpx2-KO or wild-type mice analyzed 4 days after $10 Gy g-irradiatio...

UNLABELLED The aim of the study was to analyze the physicochemical synthesized complex 3 [(1,3- thiazol -2- ylimino) methyl)]-4H- chromene -4 -one with tetrachloroplatinate(II) dipotassium and determination peroxidase activity and glutathione (GPX) in red blood cells of cancer patients and healthy subjects. MATERIALS AND METHODS Tests were carried out with the approval of the Bioethics Commit...