Abstract:
:Removal of glutamate from the synaptic cleft by astroglial glutamine synthase (GS) is a crucial step in the regulation of glutamate turnover and metabolism, thus participating in endogenous neuroprotective processes occurring within brain tissues. Here we investigated on the effect of inflammatory cytokines on GS activity in astroglial cells undergoing NMDA receptors stimulation. Incubation of human cultured astroglial cells with NMDA (100 microM) enhanced GS expression, an effect driven by the generation of nitric oxide (NO) since l-NAME (500 microM), an inhibitor of NO synthase, reversed this effect. NMDA-related increase of GS activity and glutamine concentration was antagonised by previous incubation of astroglial cells with a mixture of LPS plus gammaIFN, an effect counteracted by dexamethasone, the latter effect being accompanied by inhibition of inducible NO synthase. These results show that LPS plus gammaIFN inhibit elevation of GS activity subsequent to NMDA receptor stimulation in astroglial cells via enhancement of inducible NO synthase, and this may represent the site of interaction between pro-inflammatory and excitotoxic stimuli in the brain.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Muscoli C,Visalli V,Colica C,Nisticò R,Palma E,Costa N,Rotiroti D,Nisticò G,Mollace Vdoi
10.1016/j.neulet.2004.09.079keywords:
subject
Has Abstractpub_date
2005-01-20 00:00:00pages
184-8issue
3eissn
0304-3940issn
1872-7972pii
S0304-3940(04)01312-6journal_volume
373pub_type
杂志文章abstract::The effects of bilateral cut of the stria terminalis (ST) on the dosage of estradiol benzoate (EB) needed to induce the lordosis reflex in the ovariectomized female rat were examined. Seven different doses ranging 0.5-20 micrograms were given s.c. in oil, daily for 2 days in a counterbalanced order, at 3-week interval...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(94)11173-g
更新日期:1995-01-23 00:00:00
abstract::It is widely held that transdiaphragmatic pressure is a reliable index of the extent of central activation of the diaphragm but the maximal voluntary transdiaphragmatic pressure is lower during inspiratory than expulsive efforts. To determine whether the diaphragm is fully activated during the two manoeuvres supramaxi...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(88)90481-8
更新日期:1988-06-17 00:00:00
abstract::Glial cell line-derived neurotrophic factor (GDNF) was measured for the first time in the brain (substantia nigra, caudate nucleus, putamen, cerebellum, and frontal cortex) from control and parkinsonian patients by highly sensitive sandwich enzyme-linked immunosorbent assay. In both groups, the levels of GDNF in the v...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)01577-4
更新日期:2001-03-16 00:00:00
abstract::Vesicular glutamate transporters (VGLUTs) are responsible for loading glutamate into synaptic vesicles. Altered VGLUT protein expression has been suggested to affect quantal size and glutamate release under both physiological and pathological conditions. In this study, we investigated mRNA and protein expression level...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2015.01.080
更新日期:2015-03-17 00:00:00
abstract::An increasing number of studies support the presence of stem-like cells in human malignancies. These cells are primarily responsible for tumor initiation and thus considered as a potential target to eradicate tumors. CD133 has been identified as an important cell surface marker to enrich the stem-like population in va...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2010.08.057
更新日期:2010-11-05 00:00:00
abstract::A remarkable candidate gene for late-onset Alzheimer's disease (AD) is 24-dehydrocholesterol reductase (DHCR24) gene that encodes seladin-1 (selective AD indicator), an enzyme that is involved in the cholesterol biosynthetic pathway, exerts neuroprotective and anti-apoptotic effects, and found to be down regulated in ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2012.08.010
更新日期:2012-09-20 00:00:00
abstract::The aim of this study was to examine the expression profiles of N-methyl-D-aspartate (NMDA) receptor subunits in rats during seizure development and kindled process induced by pentylenetetrazole (PTZ). Using quantitative Western blotting, the levels of NR1, NR2A and NR2B subunits were measured in the cortex and hippoc...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2003.11.029
更新日期:2004-02-06 00:00:00
abstract::Imagining a familiar environment is different from imagining an environmental map and clinical evidence demonstrated the existence of double dissociations in brain-damaged patients due to the contents of mental images. Here, we assessed a large sample of young and old participants by considering their ability to gener...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2015.06.058
更新日期:2015-08-18 00:00:00
abstract::To investigate whether any specific requirement for extracellular Ca2+ exists in the control synaptic vesicle retrieval, we examined the ability of the divalent cation Ba2+ to substitute for Ca2+ in both vesicle exocytosis and endocytosis. Ba2+ stimulated glutamate release from rat cerebrocortical synaptosomes. Ba2+-e...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(98)00610-7
更新日期:1998-08-28 00:00:00
abstract::The effects of intracerebroventricular (i.c.v.) administration of dopamine receptor antagonists on the calcium-dependent brain function that reduces blood pressure were investigated. The systolic blood pressure of spontaneously hypertensive rats (SHR; male, 13 weeks of age) was reduced following i.c.v. administration ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(99)00427-9
更新日期:1999-07-16 00:00:00
abstract::Expression of vasoactive intestinal polypeptide (VIP) was studied in regenerating adult rat dorsal root ganglion (DRG) neurons in culture. VIP was not detected by radioimmunoassay in newly established cultures but increasing concentrations were observed between 2 and 4 days and VIP remained detectable for more than 2 ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(90)90660-2
更新日期:1990-01-22 00:00:00
abstract::Noradrenaline (NA)- and neuropeptide Y (NPY)-containing cell bodies were found to occur in high numbers (>75% of all cells were positive) in the human superior cervical ganglion and distributed homogeneously throughout the ganglion and showed colocalisation. A few cell bodies were VIP-immunoreactive (-ir) (less than 5...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(99)00115-9
更新日期:1999-03-26 00:00:00
abstract::In chick brain microvessels, monoamine oxidase activity using catecholamines (dopamine and noradrenaline) and indoleamines (serotonin and tryptamine) as substrates was higher than that measured in synaptosomes and free mitochondria. In contrast, phenylalkyamines such as tyramine and 2-phenylethylamine were more deamin...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(86)90075-3
更新日期:1986-12-12 00:00:00
abstract::Oligodendrocyte precursor cells (OPCs) play critical roles in maintaining the number of oligodendrocytes in white matter. Previously, we have shown that oxidative stress dampens oligodendrocyte regeneration after white matter damage, while a clinically proven radical scavenger, edaravone, supports oligodendrocyte repo...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2018.01.018
更新日期:2018-03-06 00:00:00
abstract::Effective treatments to improve survivability following exposure to the nerve agent soman have been established and are currently available. Unfortunately, electrographic brain seizures, neuroinflammation and brain cell death are still a potential problem even with treatment. In the present study we have characterized...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(03)00818-8
更新日期:2003-10-09 00:00:00
abstract::We and others have previously reported that neurons expressing neuronal nitric oxide synthase (nNOS) do not co-express GTP cyclohydrolase I, the enzyme that synthesize its cofactor tetrahydrobiopterin (BH4). BH4 is released from catecholaminergic cells and nNOS-expressing cells are located close to BH4-producing catec...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2003.08.032
更新日期:2003-12-04 00:00:00
abstract::The spontaneous electrical activity of single neurons of the midbrain dorsal raphe nucleus in the rat was recorded in vitro in 400 mum thick slices. The majority of raphe neurons exhibited the slow and regular discharge pattern that characterizes the activity of raphe neurons when recorded in vivo. The viability of th...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(76)90014-8
更新日期:1976-06-01 00:00:00
abstract::Growth associated protein-43 (GAP-43) gene induction may be involved in reactive events that follow cerebral ischemic damage. Antagonists of the N-methyl-D-aspartate (NMDA) subclass of glutamate receptors are thought to ameliorate functional outcome after ischemic injury. To assess whether glutamate NMDA receptor bloc...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)01833-x
更新日期:2001-06-08 00:00:00
abstract::A common obstacle in clinical management of pathological pain is the poor response to opioid analgesics. We now report that delta9-tetrahydrocannabinol (delta9-THC)-induced antinociception remained effective in rats with pathological pain. The selective central cannabinoid receptor antagonist SR141716A, but not the ge...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(99)00998-2
更新日期:2000-02-11 00:00:00
abstract::Diazoxide is a putative mitochondrial, ATP-sensitive potassium channel opener that has been implicated in neuroprotection in cerebral ischemia. Administered as pretreatment, diazoxide can attenuate ischemia-related neuronal injury, but little is known about the potential neuroprotective properties of the drug when it ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2005.06.036
更新日期:2005-10-28 00:00:00
abstract::Alzheimer's Disease (AD) is a neurodegenerative disorder with a complex aetiology displayed by multiple pathogenic factors. The APOE varepsilon4 allele represents the only established genetic risk factor for sporadic AD; in addition, previous findings on three single nucleotide polymorphisms (SNPs) located on the APOE...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2010.02.004
更新日期:2010-03-26 00:00:00
abstract::Opioids are used in clinical practice to relieve moderate to severe pain. Prolonged use of opioids can lead to a situation of analgesic tolerance and dependence. Several mechanisms are involved in the tolerance to analgesic opioids, including desensitization or internalization of the opioid receptor, elevation of cAMP...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2019.134638
更新日期:2020-01-18 00:00:00
abstract::Peripheral nerve transection results in a disconnection of the neuron from its target. As a result, a series of metabolic changes occur in the cell body that may cause neuronal death, mainly by apoptotic mechanisms. Although neurons from neonatal animals are the most susceptible, peripheral, lesion-induced, neuronal l...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2005.11.024
更新日期:2006-03-27 00:00:00
abstract::Erythropoietin (EPO) and its specific receptor (EPOR) have been proposed to act as an endogenous system protecting against neuronal injury and neurodegeneration. We measured EPO in cerebrospinal fluid (CSF) of patients with neurodegenerative diseases, and tested for a correlation with an established biomarker of neuro...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2006.06.011
更新日期:2006-09-01 00:00:00
abstract::Samples of human cerebral cortex were stained immunocytochemically for tyrosine hydroxylase (TH) and gamma-aminobutyric acid (GABA). TH-positive neurons were in small number and predominated in the deep infragranular layers V-VI contrasting with numerous GABA-positive neurons scattered in all layers. Co-localization o...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(89)90205-x
更新日期:1989-11-20 00:00:00
abstract::Single-site variants in the calmodulin-binding domain of RC3/neurogranin were heterologously expressed in Xenopus oocytes to examine their effects on serotonin-evoked currents. RC3 variants serine36 -->alanine (Ser36-->Ala), serine36-->glycine (Ser36-->Gly), and phenylalanine37-->tryptophan (Phe37-->Trp), which bind c...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(96)13203-1
更新日期:1996-11-29 00:00:00
abstract::New psychoactive substances (NPSs), i.e., newly designed substances with chemical residues that are slightly different from those of known psychoactive substances, have been emerging since the late 2000s, and social problems related to the use of these substances are increasing globally. Two such NPSs are 4-chloro-2,5...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2018.04.009
更新日期:2018-05-29 00:00:00
abstract::The number of neurons in the primary motor cortex (MI) and the primary somatosensory cortex (SI) were estimated in the same locations of brains from sporadic amyotrophic lateral sclerosis (ALS) cases and controls. The number of MI and SI neurons and Betz cells were significantly decreased in the ALS cases as compared ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2011.08.014
更新日期:2011-09-26 00:00:00
abstract::IGF-1 is an important factor for myelin synthesis and hence possesses therapeutic potential in treating demyelinating disease such as multiple sclerosis. However, IGF-1 poorly crosses the blood-brain barrier. In this study, we investigated the effects of the sex steroid progesterone and the glucocorticoid dexamethason...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2009.10.051
更新日期:2010-01-14 00:00:00
abstract::Tumor necrosis factor-alpha (TNF-alpha) is a proinflammatory cytokine involved in the development and maintenance of inflammatory and neuropathic pain conditions. The mechanisms by which TNF-alpha elicits pain behavior are still incompletely understood. Numerous studies suggest that TNF-alpha sensitizes primary affere...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2008.01.070
更新日期:2008-04-04 00:00:00