adenylate kinase/hypoxia

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[Effect of hypoxia on the gene profile of human bone marrow-derived mesenchymal stem cells].

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Our previous study demonstrates that hypoxia promotes human bone marrow-derived mesenchymal stem cell (hMSC) proliferation. The aim of the present study was to investigate the gene profile involved in this process by using cDNA microarray. Cultured hMSCs were treated with hypoxia (3% O(2)) for 4 h,

Endothelial cells cope with hypoxia-induced depletion of ATP via activation of cellular purine turnover and phosphotransfer networks.

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Intravascular ATP and adenosine have emerged as important regulators of endothelial barrier function, vascular remodeling and neovascularization at various pathological states, including hypoxia, inflammation and oxidative stress. By using human umbilical vein endothelial cells (HUVEC) and bovine

Postanoxic recovery of spontaneously beating isolated atria: pH related role of adenylate kinase.

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The functional activity, adenine nucleotides, and creatine phosphate content of spontaneously beating isolated rabbit atria were measured prior to anoxia, after 1 hr anoxia, and at the end of 1 hr reoxygenation at pH 6.7 and 7.2 During anoxia at pH 7.2 there was 13.3% loss of adenine nucleotides

Involvement of the phosphoryl transfer network in gill bioenergetic imbalance of pacamã (Lophiosilurus alexandri) subjected to hypoxia: notable participation of creatine kinase.

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Hypoxia is among the most critical environmental stressors for fish in aquatic environments, and several energetic alterations have been associated with it. The aim of the present study was to evaluate the involvement of the phosphoryl transfer network and its effects on adenosine triphosphate

Effect of transient hypoxia in skeletal muscle on enzyme activities in lymph and plasma.

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The effect of hypoxia lasting one hour on the hind leg muscle of anaesthetised dogs was investigated. Ten enzyme activities in plasma and leg lymph, and the lymphatic transport of these enzymes were investigated. Enzymes with high activity in muscle, like creatine kinase, lactate dehydrogenase,

Cellular energy metabolism during hypoxia.

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Tissue hypoxia is frequently seen in critically ill patients and it perhaps predisposes these patients to development of multiple system organ failure. In cellular terms, hypoxia is characterized by decreases in the intracellular concentration of oxygen, leading to a decline in aerobically produced

High-throughput screening identifies CHMP4A associated with hypoxia-inducible factor 1.

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OBJECTIVE Tumor hypoxia is a common phenomenon and hypoxia-inducible factor-1 is the transcription factor that is most closely associated with hypoxia. Hypoxia-inducible factor-1 is overexpressed in most solid tumors and plays a vital role in hypoxic acclimatization, energy metabolism, tumor

Common phenotype of resting mouse extensor digitorum longus and soleus muscles: equal ATPase and glycolytic flux during transient anoxia.

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Rates of ATPase and glycolysis are several times faster in actively contracting mouse extensor digitorum longus muscle (EDL) than soleus (SOL), but we find these rates are not distinguishable at rest. We used a transient anoxic perturbation of steady state energy balance to decrease phosphocreatine

Magnesium and cell energetics in plants under anoxia.

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Stress conditions (e.g. anoxia) frequently result in a decrease of [ATP] and in an increase of [ADP] and [AMP], with a concomitant increase of [Mg(2+)] and other cations, e.g. Ca(2+). The elevation of [Mg(2+)] is linked to the shift in the apparent equilibrium of adenylate kinase. As a result,

The effect of lead on the metabolic and energetic status of the Yabby, Cherax destructor, during environmental hypoxia.

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The concomitant effects of Pb and hypoxia on respiration and muscle energy status were examined in the freshwater crayfish Cherax destructor to determine if Pb intoxication exacerbated the effects of hypoxia. C. destructor, either intoxicated for 14 days with 0.5 mgL(-1)Pb, or from Pb-free control

Activation of glucose transport and AMP-activated protein kinase during muscle contraction in adenylate kinase-1 knockout mice.

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OBJECTIVE Recently it was reported that adenylate kinase-1 knockout mice (AK(-/-)) exhibit elevated rates of glucose uptake following repeated contractions and hypoxia, but the mechanism was not investigated. The purpose of the present study was to measure the changes in glucose transport and

Compromised energetics in the adenylate kinase AK1 gene knockout heart under metabolic stress.

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Rapid exchange of high energy carrying molecules between intracellular compartments is essential in sustaining cellular energetic homeostasis. Adenylate kinase (AK)-catalyzed transfer of adenine nucleotide beta- and gamma-phosphoryls has been implicated in intracellular energy communication and

AMP deamination delays muscle acidification during heavy exercise and hypoxia.

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In silico studies carried out by using a computer model of oxidative phosphorylation and anaerobic glycolysis in skeletal muscle demonstrated that deamination of AMP to IMP during heavy short term exercise and/or hypoxia lessens the acidification of myocytes. The concerted action of adenylate kinase

Mapping hypoxia-induced bioenergetic rearrangements and metabolic signaling by 18O-assisted 31P NMR and 1H NMR spectroscopy.

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Brief hypoxia or ischemia perturbs energy metabolism inducing paradoxically a stress-tolerant state, yet metabolic signals that trigger cytoprotection remain poorly understood. To evaluate bioenergetic rearrangements, control and hypoxic hearts were analyzed with 18O-assisted 31P NMR and 1H NMR

Replenishment of brain adenosine triphosphate content by morphinan-type N-methyl-D-asparatate receptor antagonists, dextrorphan and dextromethorphan through the activation of adenylate kinase.

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The in vitro effects of four N-methyl-D-aspartate (NMDA) receptor antagonists, dextrorphan, (DX, CAS 125-73-5), dextromethorphan, (DM, CAS 125-71-3), dizocilpine (CAS 77086-21-6) and (+/-) 2-amino-7-phosphonoheptanoate (AP-7, CAS 85797-13-3) on rat brain adenylate kinase (AK) have been studied. DM

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