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Abstract The antioxidant glutathione (GSH) is essential for the cellular detoxification of reactive oxygen species in brain cells. A compromised GSH system in the brain has been connected with the oxidative stress occuring in neurological diseases. Recent data demonstrate that besides...
Abstract Phospholipid hydroperoxide glutathione peroxidase (PHGPx; EC 220.127.116.11), a broad-spectrum thiol-dependent peroxidase, deserves renewed interest as a regulatory factor in various signaling cascades and as a structural protein in sperm cells. We present a first attempt to identify...
Abstract When present as a trophozoite in human erythrocytes, the malarial parasite Plasmodium falciparum exhibits an intense glutathione metabolism. Glutathione plays a role not only in antioxidative defense and in maintaining the reducing environment of the cytosol. Many of the known...
Abstract Adaptation to oxidative and nitrosative stress occurs in cells first exposed to a nontoxic stress, resulting in the ability to tolerate a toxic challenge of the same or a related oxidant. Adaptation is observed in a wide variety of cells including endothelial cells on exposure to nitric...
Abstract Liver heme oxygenase (HO) activity is higher in selenium-deficient rats than in control animals under basal conditions and is further increased in them, but not in controls, by phenobarbital treatment. In the present study we characterized liver HO induction by selenium deficiency using...
Abstract Activating transcription factor 2 (ATF2) belongs to the family of b asic region leucine zip per (bZIP) proteins that are characterized by the presence of a basic domain that functions as the DNAbinding domain and a leucine zipper domain that is required for dimerization. Together with...
Abstract Aminopeptidase inhibitors strongly affect the proliferation and function of immune cells in man and animals and are promising agents for the pharmacological treatment of inflammatory or autoimmune diseases. Membrane alanyl-aminopeptidase (mAAP) has been considered as the major target of...
Abstract The pyruvate dehydrogenase from Escherichia coli showed a primary kinetic isotope effect when its overall reaction or the partial reaction of the pyruvate dehydrogenase component were tested in deuterium oxide. The Michaelis constants for pyruvate were nearly unchanged, but the maximum...
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