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Seite 1 von 402 Ergebnisse
Acetyl coenzyme A carboxylase activity in neonatal rat cardiac myocytes in culture: citrate dependence and effects of hypoxia.
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The presence of a 280,000 M(r) isoform of acetyl-CoA carboxylase (ACC-280) in the cardiac myocyte suggests that heart muscle is capable of malonyl-CoA synthesis. Cellular factors which regulate activity of ACC-280 are unknown. We have employed a neonatal rat cardiac myocyte culture (where the
Citrate pretreatment attenuates hypoxia/reoxygenation-induced cardiomyocyte injury via regulating microRNA-142-3p/Rac1 aix
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Purpose: Citrate has a positive effect on improving the pathophysiological changes of cardiomyocytes such as cardiac failure and auricular fibrillation. However, the underlying mechanism remains still unclear.Methods: Rat cardiomyocytes were used to establish hypoxia/reoxygenation
Transport of malate and citrate into rat brain mitochondria under hypoxia and anesthesia.
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Hypoxia and anesthesia inhibited penetration of malate and citrate into the brain mitochondria by 60% and 40%, respectively. Anesthetized animals exposed to low oxygen tension showed similar changes as those subjected to hypoxia without anesthesia. Recovery from anesthesia was rapid and the rates of
Metabolic effects of citrate in liver during cold hypoxia studied by 1H NMR spectroscopy.
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We propose the use of 1H nuclear magnetic resonance (NMR) spectroscopy to investigate metabolite fluxes in the mammalian liver during cold hypoxia. Rat livers were flushed with one of four different preservation solutions and stored on ice in the same solution. The preservation solutions were:
[Content of citric acid and ATP-citrate-lyase activity in tissues of rats with different natural resistance to hypoxic hypoxia].
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A significantly lower content of citric acid and a lower ATP-citrate-lyase activity were found in the liver of rats high-resistant to hypoxia as compared to low-resistant ones under conditions of normoxia and after "lifting at a height" of 9000 m. A dependence is supposed to exist between the
Pyruvate Is Superior to Citrate in Oral Rehydration Solution in the Protection of Intestine via Hypoxia-Inducible Factor-1 Activation in Rats With Burn Injury.
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Recent studies have suggested that pyruvate-enriched oral rehydration solution (Pyr-ORS) may be superior to the standard bicarbonate-based ORS in the protection of intestine from ischemic injury. The aim of this study was to compare the effects of Pyr-ORS with citrate-enriched ORS (Cit-ORS) on the
Dialysis leukopenia, hypoxemia, and anaphylatoxin formation: effect of membrane, bath, and citrate anticoagulation.
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The goal of these prospective studies was to determine the effect of different dialyzer membranes and dialysate composition on leukopenia and hypoxemia during hemodialysis with citrate anticoagulation. Significant early leukopenia was found with a cuprophane membrane, while a cellulose acetate
5-Aminolevulinic acid with sodium ferrous citrate induces autophagy and protects cardiomyocytes from hypoxia-induced cellular injury through MAPK-Nrf-2-HO-1 signaling cascade.
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BACKGROUND
Hypoxia causes cardiac disease via oxidative stress and mitochondrial dysfunction. 5-Aminolevulinic acid in combination with sodium ferrous citrate (ALA/SFC) has been shown to up-regulate heme oxygenase-1 (HO-1) and decrease macrophage infiltration and renal cell apoptosis in renal
Hypoxia promotes isocitrate dehydrogenase-dependent carboxylation of α-ketoglutarate to citrate to support cell growth and viability.
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Citrate is a critical metabolite required to support both mitochondrial bioenergetics and cytosolic macromolecular synthesis. When cells proliferate under normoxic conditions, glucose provides the acetyl-CoA that condenses with oxaloacetate to support citrate production. Tricarboxylic acid (TCA)
The Mitochondrial Citrate Carrier (SLC25A1) Sustains Redox Homeostasis and Mitochondrial Metabolism Supporting Radioresistance of Cancer Cells With Tolerance to Cycling Severe Hypoxia.
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Pronounced resistance of lung cancer cells to radiotherapy and chemotherapy is a major barrier to successful treatment. Herein, both tumor hypoxia and the upregulation of the cellular antioxidant defense systems observed during malignant progression can contribute to radioresistance. We recently
Sodium citrate ingestion and muscle performance in acute hypobaric hypoxia.
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Eight subjects were studied on four occasions following ingestion of a 300-ml solution containing either sodium citrate (C, 0.4 g.kg-1 body mass) or placebo (P, sodium chloride 0.045 g.kg-1 body mass), at local barometric pressure (N, PB approximately 740 mmHg, 98.7 kPa) or hypobaric hypoxia (HH, PB
Use of naloxone to reverse carfentanil citrate-induced hypoxemia and cardiopulmonary depression in Rocky Mountain wapiti (Cervus elaphus nelsoni).
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With the use of a crossover study design, we investigated the respiratory and cardiovascular effects of naloxone administration in eight healthy Rocky Mountain wapiti (Cervus elaphus nelsoni) anesthetized with carfentanil (10 microg/kg i.m.) and xylazine (0.1 mg/kg). Anesthetized animals showed
Sildenafil citrate alleviates pulmonary hypertension after hypoxia and reoxygenation with cardiopulmonary bypass.
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BACKGROUND
Sudden reoxygenation of hypoxic neonates undergoing cardiac operation exacerbates the systemic inflammatory response to cardiopulmonary bypass secondary to reoxygenation injury, worsening cardiopulmonary dysfunction. Reports suggest sildenafil decreases pulmonary hypertension and may
Gamma-Aminobutyric Acid Increases Erythropoietin by Activation of Citrate Cycle and Stimulation of Hypoxia-Inducible Factors Expression in Rats.
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Erythropoietin (EPO) is the primary regulator of erythropoiesis in the mammalian fetus and adult. Deficiency of EPO induces anemia. In this study, we investigated the effect of gamma-aminobutyric acid (GABA) on serum EPO levels and erythropoiesis in rats. Expression levels of Epo-related
The effect of aspartate on citrate metabolism in the cytosolic fraction of brain under conditions of normoxia, hypoxia and anaesthesia.
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