glutamate pyruvate transaminase/hypoxia

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Chronic permanent hypoxemia predisposes to mild elevation of liver stiffness.

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OBJECTIVE To evaluate the impact of long term permanent hypoxemia noticed in patients with non operated congenital cyanogenic cyanotic cardiopathy on liver stiffness. METHODS We included ten adult patients with non operated inoperate cyanotic cardiopathy and ten matched patients for age and gender

Effect of hypoxia on carbon tetrachloride hepatotoxicity.

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The effect of hypoxia on carbon tetrachloride-induced hepatotoxicity was studied. Male rats were exposed to carbon tetrachloride for 2 hr in the presence of differing oxygen concentrations. Serum glutamate-pyruvate transaminase (SGPT) activities were measured 24 hr after the end of the exposure.

Effect of antioxidants on hypoxia/reoxygenation-induced injury in isolated perfused rat liver.

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Isolated perfused livers from rats fasted overnight were subjected to 30 min. of hypoxia followed by reoxygenation for 60 min., resulting in marked cytotoxicity as evidenced by an enhanced release of cytosolic enzymes (lactate dehydrogenase: 14-fold over controls, glutamate-pyruvate-transaminase:

The toxicological relevance of paracetamol-induced inhibition of hepatic respiration and ATP depletion.

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In order to elucidate the role of mitochondrial dysfunction in paracetamol-induced hepatotoxicity, the effects of paracetamol on the oxygen consumption and ATP content of the isolated perfused rat liver were correlated with parameters of hepatic viability and hepatotoxicity. Paracetamol at 5 g/L

Comparison of the requirements for hepatic injury with halothane and enflurane in rats.

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A rat model of enflurane-associated hepatotoxicity was compared with the halothane-hypoxia (HH) model (adult male rats, phenobarbital induction, 1% halothane, 14% O2, for 2 hr). The enflurane-hypoxia heating (EHH) model involved exposing phenobarbital-pretreated male adult rats to 1.5-1.8% enflurane

Enhancement of hypoxic liver damage by ethanol. Involvement of xanthine oxidase and the role of glycolysis.

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Using isolated hemoglobin-free perfused rat livers we investigated the hepatotoxic effects of hypoxia, ethanol or the combination of both. Hypoxia only (90 min) led to a weak toxicity as evidenced by the efflux of the enzymes glutamate-pyruvate-transaminase (GPT) and sorbitol dehydrogenase (SDH).

The involvement of reactive oxygen species in hypoxic injury to rat liver.

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Isolated perfused livers from fasted, but not from fed rats showed hepatotoxic responses when subjected to 30 min of hypoxia followed by 60 min of reoxygenation. Toxicity was evident by a release of glutamate-pyruvate-transaminase, lactate dehydrogenase and glutathione into the perfusate, by a

Enhanced in vivo-lipid peroxidation associated with halothane hepatotoxicity in rats.

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To study the role of lipid peroxidation in halothane-induced hepatic damage, ethane exhalation by rats exposed to 1% halothane for 1 hour was determined under normoxic (21% O2) and hypoxic (6% O2) conditions. The effects of microsomal enzyme induction by phenobarbital and/or glutathione depletion on

Biochemical and immunological changes on oral glutamate feeding in male albino rats.

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High altitude stress leads to lipid peroxidation and free radical formation which results in cell membrane damage in organs and tissues, and associated mountain diseases. This paper discusses the changes in biochemical parameters and antibody response on feeding glutamate to male albino Sprague

Effects of hemodilution on splanchnic perfusion and hepatorenal function. II. Renal perfusion and hepatorenal function.

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Hepatorenal perfusion and function were assxssed in 22 dogs undergoing acute normovolemic hemodilution (ANH) to a hematocrit (Hct) of 20% using 6% hydroxyethyl starch (200.000/0.5) as the diluent. Organ perfusion was determined with the radioactive microspheres method. Renal function was assessed by

Oligodendrocyte excitotoxicity determined by local glutamate accumulation and mitochondrial function.

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Developing oligodendrocytes (OL precursors, pre-OLs) express alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) subtype glutamate receptors (AMPARs) and are highly vulnerable to hypoxic-ischemic or oxygen-glucose deprivation (OGD)-induced excitotoxic injury, yet the mechanisms of injury

Synaptic NMDA receptors mediate hypoxic excitotoxic death.

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Excessive NMDA receptor activation and excitotoxicity underlies pathology in many neuropsychiatric and neurological disorders, including hypoxia/ischemia. Thus, the development of effective therapeutics for these disorders demands a complete understanding of NMDA receptor (NMDAR) activation during

Concentrations of free glucogenic amino acids in livers of rats subjected to various metabolic stresses.

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1. The concentrations of alanine, aspartate, glutamate, glutamine and serine plus threonine have been measured by enzymic methods in ;quick-frozen' livers from normal, starved, alloxan-diabetic and phlorrhizin-treated rats. 2. The hepatic concentrations of alanine and serine plus threonine were

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