isoleucine/hypoxia

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Kinetics of unidirectional leucine transport into brain: effects of isoleucine, valine, and anoxia.

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The rate of unidirectional uptake, v, of L-[4,5-3H]leucine was studied in 17 isolated dog brains by means of an indicator-dilution technique using 22Na as the intravascular reference. The arterial leucine concentration was varied in increments by adding unlabeled leucine to the blood and v was

Based on the Metabolomic Approach the Energy Metabolism Responses of Oriental River Prawn Macrobrachium nipponense Hepatopancreas to Acute Hypoxia and Reoxygenation.

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Hypoxia represents a major physiological challenge for prawns and is a problem in aquaculture. Therefore, an understanding of the metabolic response mechanism of economically important prawn species to hypoxia and re-oxygenation is essential. However, little is known about the intrinsic mechanisms

Efficacy and mechanism of hypoxic postconditioning in salvage of ex vivo human rectus abdominis muscle from hypoxia/reoxygenation injury.

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In reconstructive surgery, skeletal muscle may endure protracted ischemia before reperfusion, which can lead to significant ischemia/reperfusion injury. Ischemic postconditioning induced by brief cycles of reperfusion/reocclusion at the end of ischemia has been shown to salvage skeletal muscle from

Profile of plasma amino Acid levels in rats exposed to acute hypoxic hypoxia.

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The effect of acute hypoxic hypoxia on the profile of plasma amino acids in rats was studied and compared to that resulting from acute liver injury induced by giving carbon tetrachloride. In hypoxic rats exposed to 45% air in N(2) for 5 h, the concentrations of branched chain amino acids, including

Many amino acid substitutions in a hypoxia-inducible transcription factor (HIF)-1alpha-like peptide cause only minor changes in its hydroxylation by the HIF prolyl 4-hydroxylases: substitution of 3,4-dehydroproline or azetidine-2-carboxylic acid for the proline leads to a high rate of uncoupled 2-oxoglutarate decarboxylation.

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Three human prolyl 4-hydroxylases (P4Hs) regulate the hypoxia-inducible transcription factors (HIFs) by hydroxylating a Leu-Xaa-Xaa-Leu-Ala-Pro motif. We report here that the two leucines in the Leu-Glu-Met-Leu-Ala-Pro core motif of a 20-residue peptide corresponding to the sequence around Pro(564)

Transcerebral exchange kinetics of large neutral amino acids during acute inspiratory hypoxia in humans.

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Hypoxaemia is present in many critically ill patients, and may contribute to encephalopathy. Changes in the passage of large neutral amino acids (LNAAs) across the blood-brain barrier (BBB) with an increased cerebral influx of aromatic amino acids into the brain may concurrently be present and also

Effects of hypoxia on plasma amino acids of fetal sheep.

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Secondary amino acid disturbances from circulatory responses during hypoxia may cause problems in interpreting plasma amino acid profiles of sick babies investigated for possible inherited defects. Systematic studies to characterise them are difficult in man. We investigated the effects of hypoxia

Effects of hypoxia in the gills of the Manila clam Ruditapes philippinarum using NMR-based metabolomics.

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Coastal hypoxia affects the survival, behavior, and reproduction of individual local marine organisms, and the abundance, biomass, and biodiversity of coastal ecosystems. In this study, we investigated the chronic effects of hypoxia on the metabolomics in the gills of Ruditapes (R.) philippinarum.

Isoleucine, an essential amino acid, prevents liver metastases of colon cancer by antiangiogenesis.

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In spite of recent advances in the treatment of colon cancer, multiple liver metastases of colon cancer are still difficult to treat. Some chemotherapeutic regimens have been reported to be efficient, but there is a high risk of side effects associated with these. Here, we show that isoleucine, an

Ambient hypoxia reverses retinal vascular attenuation in a transgenic mouse model of autosomal dominant retinitis pigmentosa.

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OBJECTIVE Loss of retinal capillaries is an inherent component of late stage autosomal dominant retinitis pigmentosa (ADRP). This study examined the hypothetical role of tissue hyperoxia in this vascular attenuation process and tested the potential of ambient hypoxia to reverse

Transcription start sites and epigenetic analysis of the HSD17B10 proximal promoter.

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BACKGROUND Hydroxysteroid (17beta) dehydrogenase X (HSD10) is a multifunctional protein encoded by the HSD17B10 gene at Xp11.2. In response to stress or hypoxia-ischemia its levels increase rapidly. Expression of this gene is also elevated significantly in colonic mucosa of the inactive ulcerative

Cerebrospinal fluid untargeted metabolomic profiling of aneurysmal subarachnoid hemorrhage: an exploratory study.

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Despite advancements in medical and surgical therapies, clinical outcomes of aneurysmal subarachnoid hemorrhage (aSAH) continue to be poor. Currently, aSAH pathophysiology remains poorly understood. No aSAH biomarkers are commonly used in the clinical setting. This exploratory study

Prolonged maternal amino acid infusion in late-gestation pregnant sheep increases fetal amino acid oxidation.

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Protein supplementation during human pregnancy does not improve fetal growth and may increase small-for-gestational-age birth rates and mortality. To define possible mechanisms, sheep with twin pregnancies were infused with amino acids (AA group, n = 7) or saline (C group, n = 4) for 4 days during

[Infant boy with propionic acidemia: anesthetic implications].

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A 12-month-old boy diagnosed with propionic acidemia underwent gastrostomy. The patient's general state was good and he was alert, but with reduced muscular tone (unstable when seated with support, floppy head) and with dystonic movements in all extremities. An electroencephalogram showed slightly

False Measurement of Blood Amino Acids by LC-MS/MS in a Patient Dependent on Matrix Effect after Total Parenteral Nutrition Infusion

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itle"> Background and aim: Although it is widely known that the total parenteral nutrition (TPN) used frequently in intensive care units has unwanted side effects, there is little known about how it interferes with the amino acid levels taken

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