tryptophan/hypoxia

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Leathanach 1 ó 169 torthaí

Indoleamine 2, 3-dioxygenase Up-regulates Hypoxia-inducible Factor-1α Expression by Degrading L-tryptophan but Not Its Activity in Human Alloreactive T-cells.

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Logáil Isteach / Cláraigh

Indoleamine 2, 3-dioxygenase (IDO) suppresses T-cell function at least in part by altering cell metabolism. Hypoxia-inducible factor-1 (HIF-1) increases upon T-cell activation and alters cell metabolism favoring their differentiation to effector cells. The effect of IDO on HIF-1α expression and

Synthesis and biological activity of 1-methyl-tryptophan-tirapazamine hybrids as hypoxia-targeting indoleamine 2,3-dioxygenase inhibitors.

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Logáil Isteach / Cláraigh

We have designed and synthesized new hypoxic-neoplastic cells-targeted indoleamine 2,3-dioxygenase (IDO) inhibitors. 1-Methyl-tryptophan (1MT)-tirapazamine (TPZ, 3-amino-1,2,4-benzotriazine 1,4-dioxide) hybrid inhibitors including 1 (TX-2236), 2 (TX-2235), 3 (TX-2228), and 4 (TX-2234) were prepared.

Imatinib attenuates hypoxia-induced pulmonary arterial hypertension pathology via reduction in 5-hydroxytryptamine through inhibition of tryptophan hydroxylase 1 expression.

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Logáil Isteach / Cláraigh

BACKGROUND Whether idiopathic, familial, or secondary to another disease, pulmonary arterial hypertension (PAH) is characterized by increased vascular tone, neointimal hyperplasia, medial hypertrophy, and adventitial fibrosis. Imatinib, a potent receptor tyrosine kinase inhibitor, reverses pulmonary

Effect of tryptophan hydroxylase 1 deficiency on the development of hypoxia-induced pulmonary hypertension.

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Logáil Isteach / Cláraigh

Tryptophan hydroxylase 1 catalyzes the rate-limiting step in the synthesis of serotonin in the periphery. Recently, it has been shown that expression of the tryptophan hydroxylase 1 gene is increased in lungs and pulmonary endothelial cells from patients with idiopathic pulmonary arterial

Acclimatization to hypoxia modulates the tryptophan 2,3-dioxygenase activity in rats exposed to simulated high altitude.

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Logáil Isteach / Cláraigh

1. Exposure of rats to an 8000 m altitude increased the hepatic tryptophan 2,3-dioxygenase (EC 1.13.1.12) activity. 2. Acclimatization to hypoxia by a repeated exposure to an altitude of 5000 m induced a marked decrease in liver tryptophan dioxygenase activity after the rats were subjected to an

Negative Impact of Hypoxia on Tryptophan 2,3-Dioxygenase Function.

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Logáil Isteach / Cláraigh

Tryptophan is an essential amino acid for hosts and pathogens. The liver enzyme tryptophan 2,3-dioxygenase (TDO) provokes, by its ability to degrade tryptophan to N-formylkynurenine, the precursor of the immune-relevant kynurenines, direct and indirect antimicrobial and immunoregulatory states. Up

Interactive effects of hypoxia with estradiol-17β on tryptophan hydroxylase activity and serotonin levels in the Atlantic croaker hypothalamus.

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Logáil Isteach / Cláraigh

Hypoxia causes a marked decline in reproductive neuroendocrine function in Atlantic croaker due to decreases in the hypothalamic expression and activities of tryptophan hydroxylase (TPH, the rate limiting enzyme in serotonin synthesis) and aromatase. In the present study, the influence of the

Preconditioning of primary human renal proximal tubular epithelial cells without tryptophan increases survival under hypoxia by inducing autophagy.

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Logáil Isteach / Cláraigh

OBJECTIVE Hypoxia plays a significant role in the pathogenesis of acute kidney injury (AKI). Autophagy protects from AKI. Amino acid deprivation induces autophagy. The effect of L-tryptophan depletion on survival and autophagy in cultures of renal proximal tubular epithelial cells (RPTECs) under

Hypoxia decreases the T helper cell-suppressive capacity of synovial fibroblasts by downregulating IDO1-mediated tryptophan metabolism.

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Logáil Isteach / Cláraigh

The development of RA is linked to local infiltration of immune cells and to changes in the phenotype of synovial fibroblasts. Synovial fibroblasts possess the capacity to suppress T cell responses through indoleamine 2, 3-dioxygenase 1 (IDO1)-mediated tryptophan metabolism. However,

Molecular cloning, characterization and expression of two tryptophan hydroxylase (TPH-1 and TPH-2) genes in the hypothalamus of Atlantic croaker: down-regulation after chronic exposure to hypoxia.

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Logáil Isteach / Cláraigh

Recently we discovered that hypoxia causes marked impairment of reproductive neuroendocrine function in Atlantic croaker, a marine teleost, which is due to a decline in hypothalamic serotonergic activity. As a first step in understanding the molecular responses of the hypothalamic serotonergic

Hypoxia Inducible Factor 1α Inhibits the Expression of Immunosuppressive Tryptophan-2,3-Dioxygenase in Glioblastoma.

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Logáil Isteach / Cláraigh

Abnormal circulation in solid tumors results in hypoxia, which modulates both tumor intrinsic malignant properties as well as anti-tumor immune responses. Given the importance of hypoxia in glioblastoma (GBM) biology and particularly in shaping anti-tumor immunity, we analyzed which immunomodulatory

Hypobaric hypoxia: effects on early development of tryptophan oxygenase in neonatal rats.

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Logáil Isteach / Cláraigh

Despite a reduction in liver and body weights of neonatal rats born and reared at a simulated altitude of 5790 meters (oxygen pressure, 76.36 millimeters of mercury), the hepatic enzyme tryptophan oxygenase develops prematurely in these stressed animals as compared to controls reared at sea level.

Hypobaric hypoxia: effects on hepatic tryptophan oxygenase periodicity in mice.

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Logáil Isteach / Cláraigh

Effect of hypoxia on tyrosine and tryptophan hydroxylation in unanaesthetized rat brain.

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Logáil Isteach / Cláraigh

Changes in the metabolic footprint of placental explant-conditioned culture medium identifies metabolic disturbances related to hypoxia and pre-eclampsia.

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Logáil Isteach / Cláraigh

Pre-eclampsia (PE) is a multi-system disorder thought to be mediated by circulating factors released from damaged placental villous trophoblast. There is extensive evidence of changes in the villous tissue in PE, some of which may be replicated by culturing villous tissue in hypoxic conditions.

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