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glutathione reductase/carie dentaire
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Targeting the intersubunit cavity of Plasmodium falciparum glutathione reductase by a novel natural inhibitor: computational and experimental evidence.
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Glutathione reductase (GR), a homodimeric FAD-dependent disulfide reductase, is essential for redox homeostasis of the malaria parasite Plasmodium falciparum and has been proposed as an antimalarial drug target. In this study we performed a virtual screening against PfGR, using the structures of
Glutathione reductase of the malarial parasite Plasmodium falciparum: crystal structure and inhibitor development.
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The malarial parasite Plasmodium falciparum is known to be sensitive to oxidative stress, and thus the antioxidant enzyme glutathione reductase (GR; NADPH+GSSG+H(+) <==> NADP(+)+2 GSH) has become an attractive drug target for antimalarial drug development. Here, we report the 2.6A resolution crystal
A crystallographic study of the glutathione binding site of glutathione reductase at 0.3-nm resolution.
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The binding of glutathione, some related molecules and two redox compounds to crystals of glutathione reductase has been investigated by X-ray crystallography at 0.3-nm resolution. Models for several bound ligands have been built and subjected to crystallographic refinement. The results clearly show
Mechanistic and structural insights into the in vitro inhibitory action of hypericin on glutathione reductase purified from baker's yeast.
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This work aims at studying the interaction between glutathione reductase (GR) and hypericin. The type of inhibition was determined by measuring changes in GR activity at increasing concentrations of hypericin as well as at varying concentrations of glutathione disulfide (GSSG) and nicotinamide
Kinetics and crystallographic analysis of human glutathione reductase in complex with a xanthene inhibitor.
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We have determined the crystal structure of a complex between the noncompetitive inhibitor (Kis = 27 microM, Kii = 48 microM with respect to oxidized glutathione (GSSG) and Kis = 144 microM, Kii = 176 microM with respect to NADPH) 6-hydroxy-3-oxo-3H-xanthene-9-propionic acid (XAN) and human
Glutathione reductase turned into trypanothione reductase: structural analysis of an engineered change in substrate specificity.
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Trypanosoma and Leishmania, pathogens responsible for diseases such as African sleeping sickness, Chagas' heart disease, or Oriental sore, are two of the very few genera that do not use the ubiquitous glutathione/glutathione reductase system to keep a stable cellular redox balance. Instead, they
Activity and kinetic characteristics of glutathione reductase in vitro in reverse micellar waterpool.
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The enzyme activity of glutathione reductase (NAD(P)H:oxidized-glutathione oxidoreductase, EC 1.6.4.2) incorporated in CTAB/H2O/CHCl3-isooctane (1:1, v/v) reverse micelles has been investigated. Enzyme follows the Michaelis-Menten kinetics within a specified concentration range. Effects of pH,
The Relevance of Glutathione Reductase Inhibition by Fluoxetine to Human Health and Disease: Insights Derived from a Combined Kinetic and Docking Study.
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Glutathione reductase (GR) is a homodimeric enzyme playing an important role in the regeneration of the central antioxidant molecule reduced glutathione (GSH) from oxidized glutathione (GSSG) at the expense of a molecule of NADPH. GSH scavenges and eliminates superoxide and hydroxyl radicals
Modeling, stability and the activity assessment of glutathione reductase from Streptococcus Thermophilus; Insights from the in-silico simulation study.
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Antioxidant enzymes (AEs) are the main parts of the natural barriers of the body which deactivate the oxidant factors. To discover and understand their structures and function will deserve a deeper investigation. Accordingly, as an AE of probiotic strains, glutathione reductase of Streptococcus
Glutathione reductase is essential for host defense against bacterial infection.
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Glutathione reductase (Gsr) catalyzes the reduction of glutathione disulfide to glutathione, a major cellular antioxidant. We have recently shown that Gsr is essential for host defense against the gram-negative bacteria Escherichia coli in a mouse model of sepsis. Although we have demonstrated that
Harnessing the mechanism of glutathione reductase for synthesis of active site bound metallic nanoparticles and electrical connection to electrodes.
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It is demonstrated herein that the FAD-dependent enzyme glutathione reductase (GR) catalyzes the NADPH-dependent reduction of AuCl4-, forming gold nanoparticles at the active site that are tightly bound through the catalytic cysteines. The nanoparticles can be removed from the GR active site with
Beneficial Impact of an Extract from the Berries of Aronia melanocarpa L. on the Oxidative-Reductive Status of the Submandibular Gland of Rats Exposed to Cadmium.
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Oxidative stress underlies the pathomechanisms of toxic action of cadmium (Cd), including its damaging impact on the oral cavity. This study investigated whether the administration of an extract from Aronia melanocarpa L. berries (AME), characterized by their strong antioxidative potential,
Antitumor effects of hydrogen peroxide in vivo.
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Glucose oxidase, covalently coupled to polystyrene microspheres (GOL), produced H(2)0(2) at an average rate of 3.6 nmol/min per 10(9) beads under standard assay conditions. Injection of 1.3 x 10(10) to 1.1 x 10(11) GOL i.p. prolonged the survival of mice by 27 percent after injection of 10(6) P388
The bacterial redox signaller pyocyanin as an antiplasmodial agent: comparisons with its thioanalog methylene blue.
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The quorum sensor and signalling molecule pyocyanin (PYO) contributes significantly to the pathophysiology of Pseudomonas aeruginosa infections. Comparison to phenothiazine drugs suggests that the antimalarial compound methylene blue (MB) can be regarded as a sulfur analog of PYO. This working
Enicostemma littorale prevents tumor formation in 7,12-dimethylbenz(a)anthracene-induced hamster buccal pouch carcinogenesis.
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Oral cancer is one of the most common malignancies worldwide, and India has recorded the highest annual incidence of oral cancer in comparison with other countries. Altered lipid peroxidation and antioxidant status along with defect in detoxification cascade have been implicated in the pathogenesis
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