Abstract:
:Microglia, the primary resident immune cells of the central nervous system (CNS), responds rapidly to pathogens and injury by secreting immune mediators including nitric oxide (NO). The reaction of NO with the anti-oxidant glutathione forms S-nitrosoglutathione (GSNO), the major pool of biologic NO in the body. GSNO is degraded by GSNO reductase (GSNOR). Recently, we have shown that copper (Cu(I)) inhibits the release of NO in lipopolysaccharide (LPS)-stimulated BV2 microglia and induces BV2 microglia to acquire a mixed a profile with both pro- and anti-inflammatory characteristics. Since GSNOR is the critical enzyme in GSNO metabolism, we sought to determine whether Cu(I) affects GSNOR activity and S-nitrosothiol (SNO) accumulation in activated BV2 microglia. Our results show that GSNOR protein expression is reduced by Cu(I) treatment in LPS-stimulated BV2 microglia. Our results also show a decrease in S-nitrosothiol content despite a reduced GSNOR expression. This effect is most likely due to Cu(I) reacting with the central thiol of the SNO bond resulting in the degradation of SNO. A dose of 1 μM Cu(I) did not affect SNO protein accumulation in LPS-stimulated BV2 microglia, however, a dose of 100 μM Cu(I) inhibited SNO protein in accordance with inhibition of S-nitrosothiols. These data provide direct evidence that Cu(I) disrupts S-nitrosothiol homeostasis and NO metabolism, and, thus, provide new insights into the mechanisms involved in microglia-mediated-CNS disorders.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Rossi-George A,Guo CJdoi
10.1016/j.neuint.2016.05.011subject
Has Abstractpub_date
2016-10-01 00:00:00pages
1-8eissn
0197-0186issn
1872-9754pii
S0197-0186(16)30110-3journal_volume
99pub_type
杂志文章abstract::Prenatal exposure to diazepam (DZ), a positive allosteric modulator of the gamma-aminobutyric acid(A) (GABA(A)) receptor complex, exerts profound effects that become more evident during puberty and in many cases are sex-specific, suggesting that such exposure interferes with the activity of steroid hormones. Apart fro...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(02)00226-7
更新日期:2003-07-01 00:00:00
abstract::Excitotoxicity is the main event during neurological disorders producing drastic morphological and functional changes. Rac-GTPase is involved in cytoskeletal remodeling and survival. However, the role of Rac1 after cerebral ischemia has not been completely understood yet. In this study, we evaluated the activity of Ra...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2010.08.014
更新日期:2010-12-01 00:00:00
abstract::An investigation was made into the effects of hyperammonemia on the metabolism of brain serotonin (5-HT). The animal model used was the sparse fur (spf) mouse, which possesses an inborn error of the urea cycle, i.e. an abnormal form of ornithine transcarbamylase. Several indoles were measured in brain and plasma using...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(85)90019-1
更新日期:1985-01-01 00:00:00
abstract::The present study has been designed to establish the potential benefits from 1-methylnicotinamide (MNA) treatment on brain disorders associated with type 1 diabetes. All experiments were carried out after 6 weeks of streptozotocin-induced diabetes (60 mg/kg of body weight, i.p.) in male Wistar rats treated for 5 weeks...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2009.10.004
更新日期:2010-01-01 00:00:00
abstract::The ketogenic diet (KD) is used for the treatment of refractory epilepsy in children, however, the mechanism(s) remains largely unknown. Also, the antiepileptogenic potential in animal models of epilepsy has been poorly addressed. Activation of cannabinoid type-1 receptor (CB(1)-R) upon seizure activity may mediate ne...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2008.10.012
更新日期:2009-03-01 00:00:00
abstract::The changes in intracellar Ca(2+)-concentration, which occur during stimulation of vascular smooth muscle cells with excitatory agonists, are discussed. The effects of these agonists on the membrane potential of these cells are indirect, and mainly due to an activation of K(+)- and Cl(?)-channels by the release of cal...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(90)90152-j
更新日期:1990-01-01 00:00:00
abstract::Deficiency of 5-methyltetrahydrofolate (5-MTHF) in cerebrospinal fluid (CSF) is associated with a number of neurometabolic conditions including mitochondrial electron transport chain defects. Whilst failure of the active transport of 5-methyltetrahydrofolate (5-MTHF) into the CSF compartment has been proposed as a pot...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2013.10.002
更新日期:2013-12-01 00:00:00
abstract::The increasing incidence of autism suggests a major environmental influence. Epidemiology has implicated many candidates and genetics many susceptibility genes. Gene/environment interactions in autism were analysed using 206 autism susceptibility genes (ASG's) from the Autworks database to interrogate ∼1 million chemi...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2016.10.011
更新日期:2016-10-27 00:00:00
abstract::Neuroblastoma cells, cultivated on plastic dishes, in presence of 15 mM glucose resist very well to hypoxia. Cells incubated on plastic dishes, if left unshaken, showed a Pasteur effect at an oxygen concentration below 10%. Oxygen diffusion was the limiting factor in these plastic dishes since improved oxygen diffusio...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(84)90116-5
更新日期:1984-01-01 00:00:00
abstract::It has been reported that mutations of gammaPKC cause hereditary spinocerebellar atrophy type 14 (SCA14). Our recent study has revealed that the SCA14 mutant gammaPKC is susceptible to aggregation and causes cell death. Among mutations/polymorphisms of gammaPKC, the R659S mutation was firstly segregated from families ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2006.05.005
更新日期:2006-12-01 00:00:00
abstract::Hyperlipidemia, low density lipoproteins (LDL) and their oxidized forms, and oxidative stress are suspected to be a key combination in the onset of AD and acetylcholinesterase (AChE) plays a part in this pathology. The present study aimed to link these parameters using differentiated SH-SY5Y human neuroblastoma cells ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2014.07.007
更新日期:2014-12-01 00:00:00
abstract::Cortical cells from embryonic mice (E17) showed a rapid cell-death under the serum-free condition. The addition of nefiracetam at 0.1-10 microM increased the survival activity, while aniracetam at the same concentrations did not. The cell death was characterized to be apoptotic, since dead cells showed nuclear condens...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(01)00080-8
更新日期:2002-02-01 00:00:00
abstract::The synthesis of neurotransmitter glutamate in brain is mainly carried out by glutaminase enzymes. This synthesis must be exquisitely regulated because of its harmful potential giving rise to excitotoxic damage. It is noteworthy that two glutaminase isozymes coded by different genes are expressed in the brain of mamma...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2009.02.021
更新日期:2009-07-01 00:00:00
abstract::Acetylcholinesterase release in the guinea-pig substantia nigra has been previously investigated 'on-line', using a sensitive chemiluminescent system. Since histological observations suggest that there is a difference in acetylcholinesterase distribution in the rat substantia nigra compared to that of the guinea-pig, ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(96)00057-5
更新日期:1996-12-01 00:00:00
abstract::G protein-coupled receptors are cell surface receptors that mediate the effects of extracellular signals in the endocrine/paracrine and sensory systems. Experimental evidence is accumulating, which suggest that these receptors form dimers or higher order oligomers. The functional relevance of G protein-coupled recepto...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2007.05.018
更新日期:2007-10-01 00:00:00
abstract::Multiple sclerosis (MS) is an autoimmune disease in which pathogenic T cells play an important role, and an experimental autoimmune encephalomyelitis (EAE) is used as an animal model of MS. Galectins are β-galactoside-binding lectins and involved in various physiological and pathological events. Among fifteen members ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2018.06.007
更新日期:2018-09-01 00:00:00
abstract::Phosphodiesterase 7B (PDE7B) inhibition has been considered as a therapeutic target for the treatment of several neurological disorders. Currently, there are no radio-labeled tracers available to determine receptor occupancy (RO) of this target. Developing such a tracer could greatly facilitate the identification of v...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2020.104735
更新日期:2020-07-01 00:00:00
abstract::In this study, the role of exogenous fatty acids in the regulation of proteolipid protein (PLP) gene expression was investigated using the following model culture system: C6 glioma cells expressing the green-fluorescent protein (eGFP) driven by different segments of PLP promoter. Eicosapentanoic acid (EPA; 20:5 n-3), ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(03)00172-4
更新日期:2004-04-01 00:00:00
abstract::Following intravitreal injections of (35)S-amino acids to label axonally transported proteins, calpain I and II from the superior colliculi and the lateral geniculate bodies were isolated via hydrophobic interaction chromatography, anion exchange HPLC and sodium-dodecyl sulphate electrophoresis. Among the slowly trans...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(90)90032-o
更新日期:1990-01-01 00:00:00
abstract::Phosphine-borane complexes are novel cell-permeable drugs that protect neurons from axonal injury in vitro and in vivo. These drugs activate the extracellular signal-regulated kinases 1/2 (ERK1/2) cell survival pathway and are therefore neuroprotective, but do not scavenge superoxide. In order to understand the intera...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2016.05.014
更新日期:2016-10-01 00:00:00
abstract::Tissue preparations from the brain of rats and guinea-pigs were examined for their activity in binding isotopically labelled colchicine, as a measure of their content of tubulin. The amount of binding material extracted into a cold buffered solution was unaffected by keeping tissues at 0 degrees C. It diminished by on...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(83)90072-4
更新日期:1983-01-01 00:00:00
abstract::Aminoethylcysteine ketimine is a sulfur-containing cyclic compound produced by the enzymatic alpha-deamination of the parent aminoethylcysteine that has been detected in bovine brain and cerebellum. Aminoethylcysteine ketimine is known to dimerize spontaneously and easily lose one carboxyl group. This decarboxylated c...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(97)00094-6
更新日期:1998-04-01 00:00:00
abstract::The influence of alpha2-autoreceptors on the facilitation of [3H]-noradrenaline release mediated by angiotensin II was studied in prostatic portions of rat vas deferens preincubated with [3H]-noradrenaline. Angiotensin II enhanced tritium overflow evoked by trains of 100 pulses at 8 Hz, an effect that was attenuated b...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2006.07.002
更新日期:2006-12-01 00:00:00
abstract::Aging is a biological process characterized by impairment of cellular bioenergetic function, increased oxidative stress, attenuated ability to respond to stresses, increased risk of contracting age-associated disorders that affects many tissues, with a more marked effect on brain and heart function. Oxidative stress i...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2010.12.016
更新日期:2011-03-01 00:00:00
abstract::Neural stem (NS) cells are multipotent cells defined by their capacity to proliferate and differentiate into all neuronal and glial phenotypes. NS cells can be obtained from specific regions of the adult brain, or generated from embryonic stem cells (ESCs). NS cells differentiate into neural progenitor (NP) cells and ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2011.04.002
更新日期:2011-09-01 00:00:00
abstract::Transglutaminase (TGase) activity is increased in affected regions of brains from patients with Huntington's disease (HD). TGase activity is particularly elevated in the nucleus compared with the cytoplasm from these brains. Gamma-glutaminyl-lysyl cross-links have been detected in nuclear inclusions in HD brain, indic...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/s0197-0186(01)00060-2
更新日期:2002-01-01 00:00:00
abstract::Rasagiline is a propargylamine and irreversible monoamine oxidase (MAO) B inhibitor used for the treatment of Parkinson's disease (PD). It has demonstrated neuroprotective properties in laboratory studies. Current concepts of PD aetiopathogenesis include the role of alpha-synuclein, protein aggregation, free radical m...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2010.06.017
更新日期:2010-11-01 00:00:00
abstract::Selective dopaminergic neurotoxicity induced by 1-methyl-4-phenylpyridine (MPP+) is believed to be due to the transmembrane uptake by the dopamine transporter and subsequent inhibition of mitochondrial complex I and/or production of free radicals. However, little is known about the molecular sequence of intracellular ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(99)00083-2
更新日期:1999-11-01 00:00:00
abstract::Several glycoproteins in mammalian brains contain α2,8-linked disialic acid residues. We previously showed a constant expression of disialic acid (DiSia) in the hippocampus, olfactory bulb and cortex, and a gradual decrease of expression in the cerebellum from neonatal to senile mice. Previous publications indicate th...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2013.07.013
更新日期:2013-11-01 00:00:00
abstract::The expression of 5-hydroxytryptamine-2B (5-HT2B) receptor mRNA has recently been shown in cultured astrocytes. Here the expression of functional 5-HT2B receptors has been studied in cultured astrocytes from rat cerebral cortex, hippocampus, and brain stem. Fluo-3- and fura-2-based microspectrofluorometry was used for...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(99)00134-5
更新日期:2000-04-01 00:00:00