Objective(s): Populus species have various pharmacological properties, including antioxidant activity. In this study, the effects of Populus tomentiglandulosa extract (PTE) on histopathology and antioxidant enzymes in the rat liver and kidney were examined.  Materials and Methods: Sprague-Dawley rats were assigned to three groups; (1) no...

Down syndrome or trisomy 21 is the single most common genetic cause of mental retardation. It has been postulated that there is oxidative stress in Down syndrome due to over expression of superoxide dismutase 1 (SOD -1) , an antioxidant enzyme which is coded on chromosome 21(21q22.1). The present study included 31 clinically diagnosed children with Down syndrome. The diagnosis of trisomy 21 was...

The present study aimed to describe the expression and purification of cyclophilin-type peptidylprolyl cis-trans isomerase (PPI) from the red alga Pyropia yezoensis. The antioxidant activity of the purified protein was also demonstrated, based on its ability to act against oxidative stress in HepG2 human hepatocellular carcinoma cells. HepG2 cells that were treated with recombinant PPI protein ...

background: imbalances between the oxidant-antioxidant status have been implicated in the pathogenesis of several diseases, including oral cancer. majority of oral cancer are preceded by a well-recognized group of pre-malignant lesions. however, only a small fraction of those lesions, undergo malignant transformation. hence, there is a great need to identify biological markers, which will assis...

The aim of this study was to gain more complete information about the relationships between some endogenous antioxidants and the malondialdehyde (MDA) as a marker of lipid peroxidation, during D-galactose induced senescence. The activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and the concentrations of uric acid (UA) in plasma and MDA in erythrocyte's hemol...

Previous studies suggest that abscisic acid (ABA) stimulates the activities of antioxidant enzymes under normal and chilling temperature and enhanced chilling resistance in Stylosanthes guianensis. The objective of this study was to test whether nitric oxide (NO) is involved in the ABA-induced activities of the antioxidant enzymes in Stylosanthes guianensis due to its nature as a second messeng...

Reactive oxygen species (ROS) are harmful to living organisms due to the potential oxidation of membranes, DNA, proteins, and carbohydrates. Freezing injury has been shown to involve the attack of ROS. Antioxidant enzymes can protect plant cells from oxidative stress imposed by freezing injury, therefore, cold acclimation may involve an increase in the expression of antioxidant enzymes. In this...

In this study, changes in malondialdehyde level (MDA), superoxide dismutase (SOD) and catalase (CAT) activity fish liver tissue were investigated by applying two doses of 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide to Capoeta umbla for 72 hours. Changes MDA level, CAT SOD determined spectrophotometric methods. As a result the it was that there statistically significant increase C. exposed ...

Abstract This study was conducted to evaluate the role of oxidative stress in roots of eight wheat genotypes with different drought tolerance, subjected to drought stress. For analyzing the changes of antioxidant enzymes, native PAGE analyses of protein extract were performed. The roots of wheat seedlings showed one unambiguous isoform of superoxide dismutase (SOD) and catalase (CAT). Eight iso...