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Pagina 1 a partire dal 35 risultati
Acrolein is involved in ischemic stroke-induced neurotoxicity through spermidine/spermine-N1-acetyltransferase activation.
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Development of an ELISA for Measurement of Urinary 3-Hydroxypropyl Mercapturic Acid (3-HPMA), the Marker of Stroke
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We previously observed an inverse correlation between stroke and urinary 3-hydroxypropyl mercapturic acid (3-HPMA), an acrolein-glutathione metabolite, through its measurement by liquid chromatography with tandem mass spectrometry (LC-MS/MS). However, the cost of equipment for LC-MS/MS and its
Spermidine/spermine-N¹-acetyltransferase in kidney ischemia reperfusion injury.
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Ischemic reperfusion injuries such as acute renal failure, acute liver failure, stroke, and myocardial infarction are prevalent causes of morbidity and mortality. Kidney ischemic reperfusion injury is the leading cause of acute renal failure and dysfunction of transplanted kidneys. Although
Spermine is neuroprotective against anoxia and N-methyl-D-aspartate in hippocampal slices.
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Polyamines were implicated as either neurotoxic or neuroprotective in several models of stroke. Spermine augments the excitotoxicity mediated by the N-methyl-D-aspartate (NMDA) receptor because this receptor is activated at micromolar spermine concentrations. However, at higher concentrations,
The pre-ischaemic neuroprotective effect of a novel polyamine antagonist, N1-dansyl-spermine in a permanent focal cerebral ischaemia model in mice.
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The polyamine sites on the NMDA receptor complex offer a therapeutic target for focal ischaemia, potentially devoid of most side effects associated with NMDA antagonists. In this study, we investigated the effect of a novel polyamine antagonist, N(1)-dansyl-spermine (0.5-10 mg kg(-1)) in a permanent
Superparamagnetic Iron Oxide Nanoparticles-Complexed Cationic Amylose for In Vivo Magnetic Resonance Imaging Tracking of Transplanted Stem Cells in Stroke.
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Cell-based therapy with mesenchymal stem cells (MSCs) is a promising strategy for acute ischemic stroke. In vivo tracking of therapeutic stem cells with magnetic resonance imaging (MRI) is imperative for better understanding cellular survival and migrational dynamics over time. In this study, we
Use of polyamine metabolites as markers for stroke and renal failure.
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Acrolein and H(2)O(2) are among the metabolic products of spermine and spermidine, and it was found that acrolein was more toxic than H(2)O(2). It was determined whether acrolein can serve as a biochemical marker for stroke (brain infarction) and chronic renal failure. Since acrolein rapidly reacts
Extracellular spermine exacerbates ischemic neuronal injury through sensitization of ASIC1a channels to extracellular acidosis.
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Ischemic brain injury is a major problem associated with stroke. It has been increasingly recognized that acid-sensing ion channels (ASICs) contribute significantly to ischemic neuronal damage, but the underlying mechanism has remained elusive. Here, we show that extracellular spermine, one of the
Restoration of Polyamine Metabolic Patterns in In Vivo and In Vitro Model of Ischemic Stroke following Human Mesenchymal Stem Cell Treatment.
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We investigated changes in PA levels by the treatment of human bone-marrow-derived mesenchymal stem cells (hBM-MSCs) in ischemic stroke in rat brain model and in cultured neuronal SH-SY5Y cells exposed to oxygen-glucose deprivation (OGD). In ischemic rat model, transient middle cerebral artery
Polyamine oxidase and acrolein as novel biochemical markers for diagnosis of cerebral stroke.
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OBJECTIVE
We found previously that plasma levels of acrolein (CH2=CHCHO) and spermine oxidase (SMO) were well correlated with the degree of severity of chronic renal failure. The aim of this study was to test whether the levels of these 2 markers and of acetylpolyamine oxidase (AcPAO) were increased
Assessing acrolein for determination of the severity of brain stroke, dementia, renal failure, and Sjögren's syndrome.
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It was found recently that acrolein (CH2=CH-CHO), mainly produced from spermine, is more toxic than ROS (reactive oxygen species, O 2-· , H2O2, and ·OH). In this review, we describe how the seriousness of brain infarction, dementia, renal
Long-lasting inhibition of presynaptic metabolism and neurotransmitter release by protein S-nitrosylation.
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Nitric oxide (NO) and related reactive nitrogen species (RNS) play a major role in the pathophysiology of stroke and other neurodegenerative diseases. One of the poorly understood consequences of stroke is a long-lasting inhibition of synaptic transmission. In this study, we tested the hypothesis
The role of polyamine metabolism in neuronal injury following cerebral ischemia.
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Stroke is a leading cause of morbidity and mortality in the US, with secondary damage following the initial insult contributing significantly to overall poor outcome. Prior investigations have shown that the metabolism of certain polyamines such as spermine, spermidine, and putrescine are elevated
Poly(ADP-Ribose)Polymerase 1 (PARP-1) Activation and Ca(2+) Permeable α-Amino-3-Hydroxy-5-Methyl-4-Isoxazolepropionic Acid (AMPA) Channels in Post-Ischemic Brain Damage: New Therapeutic Opportunities?
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A significant number of laboratories observed that poly (ADP-ribose) polymerase (PARP) inhibitors, administered a few hours after ischemic or traumatic brain injury, may drastically reduce the subsequent neurological damage. It has also been shown that PARP inhibitors, administered for 24 hours to
Polyamines in the brain: distribution, biological interactions, and their potential therapeutic role in brain ischaemia.
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The endogenous polyamines (spermine, spermidine, and putrescine) are present at relatively high concentrations in the mammalian brain and play crucial roles in a variety of aspects of cell functioning. Stroke is the third most common cause of death and the leading cause of disability among adults in
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