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Na,K-ATPase is highly sensitive to changes in the redox state, and yet the mechanisms of its redox sensitivity remain unclear. We have explored the possible involvement of S-glutathionylation of the catalytic α subunit in redox-induced responses. For the first time, the presence of S-glutathionylated cysteine residues was shown in the α subunit in duck salt(More)
Multiple lines of evidence demonstrate that reactive oxygen species (ROS) are involved in regulation of normal cell metabolism as second messengers. Under extreme conditions, these molecules induce oxidative stress, which may stimulate (or accompany) a number of neurodegenerative processes. In the glutamatergic system, ROS levels are under control of(More)
Prenatal hyperhomocysteinemia induced in rats by overloading of dietary methionine (1 g/kg body mass daily) results in systemic disordering in progeny related to an increase in the excitotoxic feature of NMDA-receptors in cerebellar neurons and memory suppression. Administration of carnosine (100 mg/kg body mass daily) in the diet of pregnant rats with(More)
We found that methionine added to the ration of pregnant rats (1 g/kg body weight) induced sustained hyperhomocysteinemia and led to the formation of sustained oxidative stress in the brain of their progeny. Newborn animals were characterized by lower body weight, SOD deficiency in the brain, increased neuronal death, and desensitization of NMDA receptors.(More)
Homocysteine and homocysteic acid (HCA), the product of spontaneous homocysteine oxidation, are important risk factors for neurodegenerative and cardiovascular diseases [1]. These compounds induce oxidative stress in brain neurons [2, 3] and lymphocytes [4], resulting from their toxic effect on the nervous and immune systems. The prooxidant effect of(More)
N-methyl-d-aspartate (NMDA) receptors are ligand-gated nonselective cation channels mediating fast neuronal transmission and long-term potentiation in the central nervous system. These channels have a 10-fold higher permeability for Ca(2+) compared with Na(+) or K(+) and binding of the agonists (glutamate, homocysteine, homocysteic acid, NMDA) triggers(More)
Ca2+ is a universal signalling molecule involved in regulating cell cycle and fate, metabolism and structural integrity, motility and volume. Like other cells, red blood cells (RBCs) rely on Ca2+ dependent signalling during differentiation from precursor cells. Intracellular Ca2+ levels in the circulating human RBCs take part not only in controlling(More)
Red blood cell research is important for both, the clinical haematology, such as transfusion medicine or anaemia investigations, and the basic research fields like exploring general membrane physiology or rheology. Investigations of red blood cells include a wide spectrum of methodologies ranging from population measurements with a billion cells evaluated(More)
The presence of N-methyl-d-aspartate receptor (NMDAR) was previously shown in rat red blood cells (RBCs) and in a UT-7/Epo human myeloid cell line differentiating into erythroid lineage. Here we have characterized the subunit composition of the NMDAR and monitored its function during human erythropoiesis and in circulating RBCs. Expression of the NMDARs(More)
Transportation of blood samples is unavoidable for assessment of specific parameters in blood of patients with rare anemias, blood doping testing, or for research purposes. Despite the awareness that shipment may substantially alter multiple parameters, no study of that extent has been performed to assess these changes and optimize shipment conditions to(More)