Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 84 for “"antioxidant enzymes"”.
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The Distribution of Innate Antioxidant Enzymes in Rat Cochleas
… That is, apical turn HCs may have lots of innate antioxidant enzymes such as glutathione (GSH), superoxide dismutase (SOD), or catalase, compared to those in basal turn HCs. The only one English paper was reported relating with this hypothesis until now. Sha, et al. reported that the dose of GSH …
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Engineering Tumor-Localized Therapies for Cancer – from Antioxidant Enzymes to Cytokines and Radiation Therapy
… cancer. First, we explore the potential of the antioxidant enzyme catalase to control tumor growth via scavenging of hydrogen peroxide and production of oxygen in the tumor. After engineering approaches to maximize intratumoral catalase exposure, we performed in vitro characterization and in …
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Antioxidant activity of Mn-salophen complex and its effects on antioxidant enzymes in Escherichia coli
Mn-salophen complex with superoxide-scavenging activity was prepared from manganese(III) acetate dihydrate and salophen in ethanol. Visible absorption spectrum of the red-brown solution exhibited a broad absorption band at 430 - 450 nm with two shoulders between 500 and 600 nm which were absent …
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Photoprotective role of beta -carotene and antioxidant enzymes: A shield against ultraviolet damage in Dunaliella bardawil
<p>Photosynthetic and antioxidant responses following exposure to an array of irradiances and frequencies were examined and contrasted in two species of the unicellular green alga Dunaliella. Species selection was based on the ability of Dunaliella bardawil (UTEX 2538) to accumulate massive …
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PERFLUOROCHEMICAL AUGMENTED INTRATRACHEAL DELIVERY OF ANTIOXIDANT ENZYMES AND GENES TO ATTENUATE OXIDATIVE STRESS-INDUCED LUNG AND RESPIRATORY MUSCLE ALTERATIONS
… HO may be ameliorated by administration of antioxidant enzymes (AOE), with superoxide dismutases (SOD) having significant protective effects. Because the lung is exposed to the highest O2 concentrations, a logical strategy to reduce HO-induced damage is to specifically target antioxidant …
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Effect of pumpkin seed (cucurbita pepo) protein isolate on the antioxidant enzymes in ccl4-induced liver injury in low-protein fed rats
… low-protein diet the activity levels of ail four enzymes were significantly higher than their counterparts on a norma! balanced diet. CCI4 intoxication resulted in significant increases in the activity levels of ail four enzymes investigated. The administration of pumpkin seed protein isolate …
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Enzymatic defenses against plant phototoxins in phytophagous insects
… Questions raised for the study were (1) Are antioxidant enzyme activity levels higher in insects adapted to feed on plants containing phototoxins? (2) Are antioxidant enzymes inducible by ingestion of phototoxins? (3) How do antioxidant enzymes interact with other metabolic detoxification …
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Intracellular antioxidant and DNA repair enzymes as correlates of stress resistance and longevity in vertebrates
… stress resistance, including perhaps key antioxidant enzymes as well as DNA repair enzymes. Enhanced antioxidant and DNA repair capacities may underlie the enhanced cellular stress resistance observed in long-lived animals, however little data is available that directly supports this idea. …
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The role of oxygen free radicals in the endotoxic shock induced myocardial dysfunction and cellular injury
… also be due to a decrease in the activity of the antioxidant enzymes and antioxidant reserve. However the changes in these parameters are not known. OFRs depress cardiac function and contractility and produce tissue injury. We hypothesized that decreases in cardiac function and contractility, and …
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Azione antiossidante del sulforafane: analisi in cellule cardiache in coltura ed in un modello animale di esercizio fisico
… to identify compounds, which might act as antioxidants, i.e. compounds that antagonize the deleterious action of reactive oxygen species (ROS) on biomolecules. The mode of action of these compounds could be either to scavenge ROS directly or to trigger protective mechanisms inside the cell, …
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Physiology and Biochemistry of Lead Accumulation in Sesbania Drummondii
… conducted to determine: 1) the presence of an antioxidant mechanism in S. drummondii to counteract oxidative stress resulting from Pb exposure, 2) the extent of Pb tolerance of S. drummondii seedlings grown in the presence of Pb and synthetic chelators in soil and 3) the expression of …
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Modulation of soybean and maize antioxidant activities by Caffeic acid and nitric oxide under salt stress
… root lipid peroxidation, root cell death and antioxidant enzymatic activity in maize roots in response to exogenously applied nitric oxide (NO) and salt stress. This part of the study is based on the partially understood interaction between NO and reactive oxygen species (ROS) such as H₂O₂ and …
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The effects of elevated mitochondrial hydrogen peroxide in S. cerevisiae : a physiological role for cytochrome c peroxidase
… resistance to H 2 O 2 , activities of various antioxidant enzymes, and levels of glutathione. Mitochondria of x ccp1 yeast were found to undergo time-dependent inactivation and the x ccp1 strain was found to be more susceptible to H 2 O 2 induced stress, as compared to the isogenic wild-type …
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Evaluation of the photoprotective role of quercetin to selected light-adapted and shade-tolerant plant species
… chlorophyll, carotenoid, anthocyanin, flavonoid, antioxidant enzymes, malondialdehyde, soluble sugar and soluble protein contents were quantified using spectroscopic techniques. Quercetin was quantified using high-performance liquid chromatography (HPLC). Sun-exposed plants were having the maximum …
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Mechanisms of Exercise-Mediated Restoration of Renal Dopamine D1 Receptor Function in Aging
… RPTs. The study revealed that exercise mediated antioxidant enzymes over-expression, reduction in oxidative stress, decrease in PKC activity and D1R serine-phosphorylation and increase in D1R-G protein coupling and inhibitory effect of SKF-38393 on Na, K-ATPase in aged rats. Also, these events …
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Respiratory muscle work and inspiratory muscle training on cytokines, oxidative stress and diaphragm fatigue in younger and older populations
… attenuation of muscle glycogen or increases in antioxidant enzymes may explain such reductions. Inspiratory muscle training (IMT) may also elicit similar adaptations in the inspiratory muscles, and thus also attenuate these markers.
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A Molecular Genetic and Physiological Comparison of the Hybrid Necrosis Response in Wheat (Triticum Aestivum L.) to Biotic and Abiotic Stress Responses
… necrosis along with the activation of several antioxidant enzymes. Detection of high levels of polyamine oxidase activity during hybrid necrosis suggests that this enzyme could be the main source of ROS responsible for tissue cell death. Genes typically encoding for plant recognition receptors …
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The role of Gamma-aminobutyric acid and Hydrogen peroxide in cell death in grape berry development
… an increase in internal GABA, which enhances antioxidant enzymes mitigating H2O2 accumulation and oxidative damage; GABA accumulation and the production of ethanol marks the beginning of hypoxic stress in plants. In order to understand the physiological and biochemical changes during the …
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Mechanism of TNF-α cytotoxicity in a leukemia virus transformation model
… with the susceptibility to TNF-α. The role of antioxidants, such as α-tocopherol and β-carotene, (known anti-cancer agents) in modulating TNF-α-induced EGF-R expression was investigated. In both the untransformed and the transformed clones, f-carotene suppressed the constitutive and the TNF-α …
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Immunotoxic and Oxidative Effects of Endosulfan and Permethrin on Murine SPlenocytes, in vitro
… (ROS) generation and modulation of intracellular antioxidant enzymes levels, was investigated. We monitored the generation of ROS such as hydrogen peroxide (H₂O₂) with 2´, 7´- dichlorofluorescin diacetate (DCFH-DA) assay and superoxide anion (O₂⁻) with hydroethidine (HE) assay in combination …
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