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hexokinase/hypoxia
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Sivu 1 alkaen 368 tuloksia
Expression of hypoxia-inducible factor 1α, glucose transporter 1, and hexokinase 2 in primary central nervous system lymphoma and the correlation with the biological behaviors
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Background: It has been indicated that abnormal glucose metabolism mediated by hypoxia-inducible factor 1α (HIF-1α) played an essential role in the development of solid tumor. However, there were rare studies about the role of them in
Hexokinase from the white shrimp Litopenaeus vannamei: cDNA sequence, structural protein model and regulation via HIF-1 in response to hypoxia.
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Hexokinase (HK) catalyzes the phosphorylation of glucose, the first rate-limiting step in glycolysis. HKs are a conserved family of tissue-specific isozymes, from which very little is known in marine crustaceans. This study describes the cloning and characterization of the full-length cDNA sequence
Intracellular glucose and binding of hexokinase and phosphofructokinase to particulate fractions increase under hypoxia in heart of the amazonian armored catfish (Liposarcus pardalis).
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Armored catfish (Liposarcus pardalis), indigenous to the Amazon basin, have hearts that are extremely tolerant of oxygen limitation. Here we test the hypothesis that resistance to hypoxia is associated with increases in binding of selected glycolytic enzymes to subcellular fractions. Preparations of
The Role of Sugars, Hexokinase, and Sucrose Synthase in the Determination of Hypoxically Induced Tolerance to Anoxia in Tomato Roots.
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Hypoxic pretreatment of tomato (Lycopersicon esculentum M.) roots induced an acclimation to anoxia. Survival in the absence of oxygen was improved from 10 h to more than 36 h if external sucrose was present. The energy charge value of anoxic tissues increased during the course of hypoxic
Kinetic properties of hexokinase under near-physiological conditions. Relation to metabolic arrest in Artemia embryos during anoxia.
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Previous analyses of glycolytic metabolites in Artemia embryos indicate that an acute inhibition of glucose phosphorylation occurs during pHi-mediated metabolic arrest under anoxia. We describe here kinetic features of hexokinase purified from brine shrimp embryos in an attempt to explain the
Effect of hexokinase activity on tomato root metabolism during prolonged hypoxia.
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Hypoxically induced tolerance to anoxia in roots of tomato (Solanum lycopersicum) was previously shown to depend on sucrose and the induction of sucrose synthase. In contrast to maize, root hexokinase (HXK) activities did not increase during hypoxia and glucose was unable to sustain glycolytic flux
Dicer mediating the expression of miR-143 and miR-155 regulates hexokinase II associated cellular response to hypoxia.
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Lung alveolar epithelial cells are exposed to hypoxia under a variety of physiological and pathological conditions. It has been shown recently that miR-143, which can directly target the key glycolytic enzyme hexokinase II (HK2), may be regulated by miR-155. We investigated whether microRNAs
Hexokinase regulation in the hepatopancreas and foot muscle of the anoxia-tolerant marine mollusc, Littorina littorea.
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Hexokinase from the hepatopancreas and foot muscle of Littorina littorea undergoes stable modification of its kinetic and structural properties in response to prolonged oxygen deprivation. In the hepatopancreas, a reduction in the Km glucose for hexokinase from the anoxic animal suggests a more
[Effect of alpha-glycerophosphate on intracellular distribution of hexokinase in the tissue of fetal rabbits during acute hypoxia].
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In experiments with 40 rabbit fetuses acute intrauterine hypoxia caused a redistribution of the hexokinase activity in brain and liver tissues towards an increase in the amount of the enzyme associated with mitochondria. Previous administration of alpha-glycerophosphate into rabbit female (at a dose
Molecular Cloning and Functional Characterization of a Hexokinase from the Oriental River Prawn Macrobrachium nipponense in Response to Hypoxia.
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Metabolic adjustment to hypoxia in Macrobrachium nipponense (oriental river prawn) implies a shift to anaerobic metabolism. Hexokinase (HK) is a key glycolytic enzyme in prawns. The involvement of HK in the hypoxia inducible factors (HIFs) pathway is unclear in prawns. In this study, the full-length
siRNA Screening Identifies the Host Hexokinase 2 (HK2) Gene as an Important Hypoxia-Inducible Transcription Factor 1 (HIF-1) Target Gene in Toxoplasma gondii-Infected Cells.
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Although it is established that oxygen availability regulates cellular metabolism and growth, little is known regarding how intracellular pathogens use host factors to grow at physiological oxygen levels. Therefore, large-scale human small interfering RNA screening was performed to identify host
[Role of hexokinase Ⅱ in the changes of autophagic flow in cardiomyocytes of mice with ischemia-hypoxia in vitro].
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Objective: To investigate the role of hexokinase Ⅱ in the changes of autophagic flow in cardiomyocytes of mice with ischemia-hypoxia in vitro. Methods: The hearts of totally six male and female C57BL/6 mice aged from 1 to 2 days were isolated to culture primary cardiomyocytes which
Expressions of hypoxia-inducible factor-1α and hexokinase-II in gastric adenocarcinoma: the impact on prognosis and correlation to clinicopathologic features.
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The impact of hypoxia-inducible factor (HIF)-1α and hexokinase-II (HK-II) expression on prognosis of gastric adenocarcinoma patients has not been clearly established. We identified all patients in Cancer Center of Sun Yat-Sen University who were diagnosed as gastric adenocarcinoma and underwent
Inhibition of hypoxia-inducible carbonic anhydrase-IX enhances hexokinase II inhibitor-induced hepatocellular carcinoma cell apoptosis.
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OBJECTIVE
The hypoxic condition within large or infiltrative hypovascular tumors produces intracellular acidification, which could activate many signaling pathways and augment cancer cell growth and invasion. Carbonic anhydrase-IX (CA-IX) is an enzyme lowering pH. This study is to examine whether
Hypoxia induces hexokinase II gene expression in human lung cell line A549.
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During adaptation to hypoxic and hyperoxic conditions, the genes involved in glucose metabolism are upregulated. To probe involvement of the transcription factor hypoxia-induced factor-1 (HIF-1) in hexokinase (HK) II expression in human pulmonary cells, A549 cells and small-airway epithelial cells
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