OBJECTIVE The aim of this study was to determine the possible association of oxidant/antioxidant status and recurrent aphthous stomatitis (RAS). STUDY DESIGN The study consisted of thirty-one patients with RAS and thirty-two healthy controls from whom saliva and blood samples were collected. Superoxide dismutase (SOD), glutathione peroxidase (GSHPx) and catalase (CAT) were measured in erythro...

the etiopathogenesis of dementia in alzheimer's disease (ad) is still unclear. however, long-term oxidative stress is believed to be one of the major contributing factors in progression of neuronal degeneration and decline of cognitive function in ad. in order to assess the presence of oxidative stress in ad, we examined the enzymatic activities of the erythrocyte cu-zn superoxide dismutase (cu...

This study compared the antioxidant status and major lipophilic antioxidants in patients with ataxia-telangiectasia (AT) and Nijmegen breakage syndrome (NBS). Total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), and concentrations of coenzyme Q10 (CoQ10) and vitamins A and E were estimated in the plasma of 22 patients with AT, 12 children with NBS, and the h...

Nuclear medicine has been using radiopharmaceuticals for the diagnostic and therapeutic purposes of many diseases. Technetium-99m methoxyisobutylisonitrile (99mTc sestamibi) is a lypophilic complex that has a positive-loaded isonitril group. Aim of the study is to investigate whether 99mTc sestamibi, which is one of the mostly used radiopharmaceuticals in nuclear medicine field, causes oxidativ...

The changes in antioxidant components in the blood of ten cold blood mares during pregnancy and after foaling were investigated. Mares' blood samples were collected three times: at the 6th month of pregnancy, two weeks before delivery and four weeks after foaling. The activity of superoxide dismutase, glutathione peroxidase, total antioxidant status (TAS), total bilirubin and uric acid were mea...

The study evaluated antioxidant status in patients with peripheral vascular disease (PVD), with and without concomitant diabetes mellitus (DM). 211 participants were divided into standardized 4 groups: patients with PVD and DM (PVD+DM+), patients with PVD without DM (PVD+DM-), patients without PVD with DM (PVD-DM+) and patients without PVD and DM (PVD-DM-). The diagnosis of PVD was established ...

the aim of this study was to investigate the effective concentration of ethanolic extract  of bee pollen on liver, spleen and heart tissues of fish. bee pollen extract in various concentrations (0.5, 2.5, 5, 10, 20 and 30 ppm) was administered to fish for 96 h under aquarium conditions. the malondialdehyde (mda) levels, total antioxidant status (tas), total oxidant status (tos), oxidative stres...

BACKGROUND Oxidative stress parameters such as total oxidant status (TOS), total antioxidant status (TAS), and oxidative stress index (OSI) have been studied in breast, thyroid, and simple esophageal cancers (EC). We evaluated these parameters in patients with EC and analyzed their correlations with treatment outcomes. MATERIAL AND METHODS Serum TOS, TAS, and OSI in 92 patients with EC at diffe...

Background Any factor like diabetes that changes the oxidant/antioxidant balance in favor of oxidants could possibly disrupt the physiologic function of ovaries. So, we have investigated the effect of vitamin E and Se supplements on antioxidant defense in ovaries of diabetic rats with focus on Xanthine dehydrogenase/oxidase (XDH/XO) and Aldehyde oxidase (AO) activities. MaterialsAndMethods This...

The present study examined the antioxidant defense of glutamine on plasma and liver antioxidant status in broilers under PHS with respect to changes in the levels of lipid peroxidation marker malondialdehyde (MDA), total antioxidant status (TAS) and the activities of anti peroxidative enzymes [superoxide dismutase (SOD) and glutathione dependent antioxidant enzymes glutathione peroxidase (GPX)]...