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l glutamic acid/hypoxia
Odkaz sa uloží do schránky
Strana 1 od 18 výsledky
Selectively Potentiating Hypoxia Levels by Combretastatin A4 Nanomedicine: Toward Highly Enhanced Hypoxia-Activated Prodrug Tirapazamine Therapy for Metastatic Tumors.
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Hypoxia-activated prodrugs (HAPs) have the potential to selectively kill hypoxic cells and convert tumor hypoxia from a problem to a selective treatment advantage. However, HAPs are unsuccessful in most clinical trials owing to inadequate hypoxia within the treated tumors, as implied by a further
Combretastatin A4 Nanoparticles Combined with Hypoxia-Sensitive Imiquimod: A New Paradigm for the Modulation of Host Immunological Responses during Cancer Treatment.
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Vascular disrupting agents (VDAs) have great potential in cancer treatment. However, in addition to their direct tumoral vascular collapse effect, VDAs activate host immunological responses, which can remarkably impair their anticancer efficacy. Here, a VDA nanomedicine, poly(l-glutamic
Effects of acute systematic hypoxia on human urinary metabolites using LC-MS-based metabolomics.
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OBJECTIVE
The metabolic variability and response to acute systematic hypoxia have been characterized by the high resolution of liquid chromatography/time-of-flight/mass spectrometry (LC-TOF/MS) in this study. Specifically, we compared the urinary metabolic profiles of six healthy sedentary men under
Carbon monoxide and Ca2+-activated K+ channels in cerebral arteriolar responses to glutamate and hypoxia in newborn pigs.
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Large-conductance calcium-activated potassium (K(Ca)) channels regulate the physiological functions of many tissues, including cerebrovascular smooth muscle. l-Glutamic acid (glutamate) is the principal excitatory neurotransmitter in the central nervous system, and oxygen tension is a dominant local
Strategy for constructing vascularized adipose units in poly(l-glutamic acid) hydrogel porous scaffold through inducing in-situ formation of ASCs spheroids.
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Vascularization is of great importance to adipose tissue regeneration. Here we introduced a paradigm that using scaffold to induce ASC spheroids, so to promote vascularized adipose tissue regeneration. Poly (l-glutamic acid) (PLGA) was activated by EDC, followed by being cross-linked by Adipic
Tumor regression and potentiation of polymeric vascular disrupting therapy through reprogramming of a hypoxia microenvironment with temsirolimus.
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Although the polymeric vascular disrupting agent (poly(l-glutamic acid)-graft-methoxy poly(ethylene glycol)/combretastatin A4) nanoparticles (CA4-NPs) has great potential to inhibit cancer growth, it is still a challenge to avert tumor recurrence and metastasis after treatment. It is mainly tightly
Methoxy poly (ethylene glycol)-block-poly (glutamic acid)-graft-6-(2-nitroimidazole) hexyl amine nanoparticles for potential hypoxia-responsive delivery of doxorubicin.
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Tumor microenvironment-responsive nano drug delivery vehicles are gaining mounting attention in the field of biomedical sciences. The hypoxic response of the tumorous cells due to very low partial pressure of oxygen (some time less than 2.5 mm of Hg) in the tumor tissues makes hypoxia-responsive
Hypoxia-sensitive supramolecular nanogels for the cytosolic delivery of ribonuclease A as a breast cancer therapeutic.
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As the most common malignancy in women, breast cancer causes >40,000 deaths annually. Ribonuclease A (RNase), a new anti-cancer agent, has attracted intense interest due to its high efficacy and specificity. However, RNase suffers from instability, a short half-life in the circulation and poor
Hypoxia-responsive block copolymer radiosensitizers as anticancer drug nanocarriers for enhanced chemoradiotherapy of bulky solid tumors.
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Radiosensitizers play an important role in the clinical radiotherapy of hypoxic solid tumors to improve therapeutic efficacy. However, the in vivo performance of clinically used small-molecule radiosensitizers is commonly compromised by low bioavailability in hypoxic tumor regions. Herein,
MK-801 protects retinal neurons from hypoxia and the toxicity of glutamate and aspartate.
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The protective effect of the anticonvulsant MK-801 and the antitussive dextromethorphan, which are both N-methyl-D-aspartate receptor antagonists, and kynurenic acid, a broad-spectrum excitotoxin antagonist, was tested in cultured rat retinal cells in an hypoxic environment. The protective effect of
N-methyl-D-aspartate-mediated injury enhances quisqualic acid-stimulated phosphoinositide turnover in perinatal rats.
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Previous work in our laboratory demonstrated that ischemic-hypoxic brain injury in postnatal day 7 rats causes a substantial increase in phosphoinositide (PPI) turnover stimulated by the glutamate analogue quisqualic acid (QUIS) in the hippocampus and striatum. To examine this phenomenon in more
Direct measurement of glutamate release in the brain using a dual enzyme-based electrochemical sensor.
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The in vivo measurement of the rapid changes in the extracellular concentrations of L-glutamic acid in the mammalian brain during normal neuronal activity or following excessive release due to episodes of anoxia or ischemia has not been possible to this date. Current techniques for the measurement
The effect of a peptide-containing synthetic lung surfactant on gas exchange and lung mechanics in a rabbit model of surfactant depletion.
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BACKGROUND
Currently, a new generation of synthetic pulmonary surfactants is being developed that may eventually replace animal-derived surfactants used in the treatment of respiratory distress syndrome. Enlightened by this, we prepared a synthetic peptide-containing surfactant (Synsurf) consisting
Hydration of hydrogels regulates vascularization in vivo.
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The key barrier to the clinical application of tissue engineering scaffolds is the limitation of rapid and sufficient vascularization. Adipose-derived stem cells (ASCs), especially multicellular aggregates, exhibited a promising angiogenic activity. Herein, we designed a series of poly(l-glutamic
Glucose oxidase-immobilized glass disks for imaging of D-glucose in acute brain slices.
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A biotinylated glucose oxidase (bGOD)-immobilized glass disk was prepared for visualizing D-glucose fluxes in acute brain slices. A mouse hippocampal slice was placed on the bGOD disk and stimulated with a stimulant solution containing horseradish peroxidase (HRP) and a substrate DA-64, followed by
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