Alcool e radicais livres de oxigénio.
Acta Médica Portuguesa, 1993 Oxygen free radicals may be generated during ethanol metabolization by cytochrome P450, or due to the formation of xanthine oxidase by ethanol effect on xanthine dehydrogenase.
M L Mira, C F Manso
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Determination of Flavin Potential in Proteins by Xanthine/Xanthine Oxidase Method
Bio-Protocol, 2020 This protocol describes a simple xanthine/xanthine oxidase enzymatic equilibration method for determination of the redox potential of a flavin. As an example of the use of this method, we determine the reduction potential of the covalently bound FAD ...
Elena Maklashina, Gary Cecchini
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GuaB Activity Is Required in Rhizobium tropici During the Early Stages of Nodulation of Determinate Nodules but Is Dispensable for the Sinorhizobium meliloti–Alfalfa Symbiotic Interaction [PDF]
, 2005 The guaB mutant strain Rhizobium tropici CIAT8999-10T is defective in symbiosis with common bean, forming nodules that lack rhizobial content. In order to investigate the timing of the guaB requirement during the nodule formation on the host common ...
Aguilar, Orlando Mario +4 more
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Role of urate, xanthine oxidase and the effects of allopurinol in vascular oxidative stress [PDF]
, 2009 Oxidative stress plays an important role in the progression of vascular endothelial dysfunction. The two major systems generating vascular oxidative stress are the NADPH oxidase and the xanthine oxidase pathways. Allopurinol, a xanthine oxidase inhibitor,
George, Jacob, Struthers, Allan D.
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Role of aldehyde dehydrogenase in hypoxic vasodilator effects of nitrite in rats and humans [PDF]
, 2015 Hypoxic conditions favour the reduction of nitrite to nitric oxide (NO) to elicit vasodilatation, but the mechanism(s) responsible for bioconversion remains ill defined.
Alexander +39 more
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The key role of nitric oxide in hypoxia: hypoxic vasodilation and energy supply-demand matching [PDF]
, 2013 Significance: a mismatch between energy supply and demand induces tissue hypoxia with the potential to cause cell death and organ failure. Whenever arterial oxygen concentration is reduced, increases in blood flow - 'hypoxic vasodilation' - occur in an ...
Alex Dyson +23 more
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Effects of Cherry in Take Versus Allopurinol on Serum Uric Acid Levels, Biomarkers of Oxidative Stress and Hepatic Xanthine Oxidase/Xanthine Dehydrogenase Activity in Hyperuricemic Rats [PDF]
Majallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2008 Background and ObjectivesPrevention and treatment of hyperuricemia are based on control of uric acid levels. The aim of this study was to investigate the effect of oral administration of sour cherry and allopurinol on serum uric acid levels, biomarkers ...
F. Haidari +4 more
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Nature Communications, 2019 The roles of the convertible forms, xanthine dehydrogenase (XDH) and xanthine oxidase (XO) during tumorigenesis is not known. Here, the authors develop XDH-stable and XO-locked knock-in (ki) mice and show increased tumor growth in XO ki mice, via ...
Teruo Kusano +11 more
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Genetic regulation of mouse liver metabolite levels. [PDF]
, 2014 We profiled and analyzed 283 metabolites representing eight major classes of molecules including Lipids, Carbohydrates, Amino Acids, Peptides, Xenobiotics, Vitamins and Cofactors, Energy Metabolism, and Nucleotides in mouse liver of 104 inbred and ...
Bennett, Brian J +11 more
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Adaptations of Escherichia coli strains to oxidative stress are reflected in properties of their structural proteomes. [PDF]
, 2020 BACKGROUND:The reconstruction of metabolic networks and the three-dimensional coverage of protein structures have reached the genome-scale in the widely studied Escherichia coli K-12 MG1655 strain.
Catoiu, Edward +6 more
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