Abstract:
:Cyclooxygenases (COX)-1 and -2 are key enzymes required for the conversion of arachidonic acid to eicosanoids, potent mediators of inflammation. In patients with multiple sclerosis, COX-2 derived prostaglandins (PGs) are elevated in the CSF and COX-2 is up-regulated in demyelinating plaques. However, it is not known whether COX-2 activity contributes to oligodendrocyte death. In cuprizone-induced demyelination, oligodendrocyte apoptosis and a concomitant increase in the gene expression of COX-2 and PGE₂-EP2 receptor precede histological demyelination. COX-2 and EP2 receptor were expressed by oligodendrocytes, suggesting a causative role for the COX-2/EP2 pathway in the initiation of oligodendrocyte death and demyelination. COX-2 gene deletion, chronic treatment with the COX-2 selective inhibitor celecoxib, or with the EP2 receptor antagonist AH6809 reduced cuprizone-induced oligodendrocyte apoptosis, the degree of demyelination and motor dysfunction. These data indicate that the PGE₂ EP2 receptor contributes to oligodendrocyte apoptosis and open possible new therapeutic approaches for multiple sclerosis.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Palumbo S,Toscano CD,Parente L,Weigert R,Bosetti Fdoi
10.1111/j.1471-4159.2011.07363.xsubject
Has Abstractpub_date
2012-05-01 00:00:00pages
418-27issue
3eissn
0022-3042issn
1471-4159journal_volume
121pub_type
杂志文章abstract::The aim of this study was to examine the effects of the phorbol ester O-tetradecanoylphorbol 13-acetate (TPA) and forskolin on delta-opioid receptor gene transcription. Treatment of NG108-15 cells with TPA (100 nM) for 48 h increased delta-opioid receptor mRNA levels, whereas different concentrations of forskolin indu...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2000.0741355.x
更新日期:2000-04-01 00:00:00
abstract::The lipid composition of the brain, including myelin, was studied in detail in two cases with a variant form of metachromatic leukodystrophy (multiple sulphatase deficiency type). In the white matter, the sulphatide concentration was 3-4 times higher than the normal level in both cases. There was a significant accumul...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1976.tb00310.x
更新日期:1976-11-01 00:00:00
abstract::Receptors for the nerve growth factor protein (NGF) have been isolated from three cell types [embryonic chicken sensory neurons (dorsal root sensory ganglia; DRG), rat pheochromocytoma (PC12) and human neuroblastoma (LAN-1) cells] and have been shown to be similar with respect to equilibrium dissociation constants. Th...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1987.tb10021.x
更新日期:1987-10-01 00:00:00
abstract::Hypothalamic norepinephrine (NE) release regulates arterial pressure by altering sympathetic nervous system activity. Because angiotensin (Ang) (1-7) decreases hypothalamic NE release and this effect may be correlated with a diminished NE synthesis, we hypothesize that Ang-(1-7) down-regulates tyrosine hydroxylase (TH...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2009.05912.x
更新日期:2009-04-01 00:00:00
abstract::Deep hypothermia protects the brain from ischemic damage and is therefore used during major cardiovascular surgeries requiring cardiopulmonary bypass and a period of circulatory arrest. Here, we demonstrated that small ubiquitin-like modifier (SUMO1-3) conjugation is markedly activated in the brain during deep to mode...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2012.07916.x
更新日期:2012-11-01 00:00:00
abstract::Ascorbate is an essential antioxidant in the CNS, localized predominantly in neuronal cytosol. Slices of mammalian brain rapidly lose ascorbate, however, when incubated in ascorbate-free media; brain slices also take up water and swell. Here we investigated water gain in coronal slices of rat forebrain incubated with ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2000.741263.x
更新日期:2000-03-01 00:00:00
abstract::The Coffin-Lowry syndrome, a rare syndromic form of X-linked mental retardation, is caused by loss-of-function mutations in the hRSK2 (RPS6KA3) gene. To further investigate RSK2 (90-kDa ribosomal S6 kinase) implication in cognitive processes, a mrsk2_KO mouse has previously been generated as an animal model of Coffin-...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2008.05703.x
更新日期:2008-12-01 00:00:00
abstract::Fenobam [N-(3-chlorophenyl)-N'-(4,5-dihydro-1-methyl-4-oxo-1H-imidazole-2-yl)urea], a clinically validated non-benzodiazepine anxiolytic, has been shown to be a potent and non-competitive metabotropic glutamate (mGlu)-5 receptor antagonist. In the present study, we have used the site-directed mutagenesis coupled with ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2006.03886.x
更新日期:2006-07-01 00:00:00
abstract::Pituitary adenylate cyclase-activating polypeptide (PACAP) and tissue plasminogen activator (tPA) play important roles in neuronal migration and survival. However, a direct link between the neurotrophic effects of PACAP and tPA has never been investigated. In this study, we show that, in PC12 cells, PACAP induced a 9....
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2011.07486.x
更新日期:2011-12-01 00:00:00
abstract::Cystatin C, a well-established biomarker of renal function, has been associated with a protective effect against stroke. However, the potential neuroprotective mechanism of cystatin C in ischemic brain injury remains unclear. Our study hypothesized that cystatin C can ameliorate blood-brain barrier (BBB) disruption by...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.14894
更新日期:2020-05-01 00:00:00
abstract::This paper describes a new, sensitive assay for dopamine-beta-hydroxylase (DBH) activity in human cerebrospinal fluid (CSF), serum and brain tissues by high performance liquid chromatography (HPLC) with electrochemical detection (ED). Dopamine (DA) was used as a substrate and was incubated under optimal conditions. No...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1981.tb00454.x
更新日期:1981-08-01 00:00:00
abstract::Prolonged stress affects homeostasis in various organs and induces stress-associated disorders. We examined the cellular changes of pituitary gland under the continuous stress condition using a rat model in which rats were kept in a cage filled with water to a height of 1.5 cm for up to 5 days. Among the pituitary hor...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2009.06057.x
更新日期:2009-06-01 00:00:00
abstract::Glial cell line-derived neurotrophic factor (GDNF) provides neuroprotection, but its neuroprotective mechanism has not been resolved. We investigated the neuroprotective mechanism of GDNF using primary culture of the rat mesencephalon. Bleomycin sulfate (BLM) and L-buthionine-[S,R]-sulfoximine (BSO) caused apoptosis i...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2000.741175.x
更新日期:2000-03-01 00:00:00
abstract::The (R) and (S) forms of 5-amino-2-hydroxyvaleric acid (2-OH-DAVA) and 5-amino-4-hydroxyvaleric acid (4-OH-DAVA) were designed as structural hybrids of the 4-aminobutyric acidB (GABAB) agonist (R)-(-)-4-amino-3-hydroxybutyric acid [(R)-(-)-3-OH-GABA] and the GABAB antagonist 5-aminovaleric acid (DAVA). (S)-(-)-2-OH-DA...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1992.tb09374.x
更新日期:1992-03-01 00:00:00
abstract::Nerve growth factor (NGF) serves a critical survival-promoting function for developing sympathetic neurons. Following removal of NGF, sympathetic neurons undergo apoptosis characterized by the activation of c-Jun N-terminal kinases (JNKs), up-regulation of BH3-only proteins including BcL-2-interacting mediator of cell...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2007.04873.x
更新日期:2007-12-01 00:00:00
abstract::Parameters affecting the binding of [3H]glycine to membrane fractions isolated from the cerebral cortex, midbrain, cerebellum, medulla oblongata, and spinal cord of the rat were investigated in a Na+-free medium. A [3H]glycine binding assay was established in which the binding was specific, saturable, pH-sensitive, an...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1981.tb04489.x
更新日期:1981-10-01 00:00:00
abstract::Significant progress has been made in the identification of intrinsic and extrinsic factors involved in the development of nervous system. It is remarkable that the establishment and maintenance of the asymmetrical architecture of a neuron is coordinated by a limited repertoire of signalling machineries. However, the ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章,评审
doi:10.1111/j.1471-4159.2006.04372.x
更新日期:2007-05-01 00:00:00
abstract::EAAC1/EAAT3 is a transporter of glutamate (Glu) present at the post-synaptic neuronal element, in opposition to the two other main transporters, GLAST/EAAT1 and GLT1/EAAT2, expressed at the excitatory amino acid (EAA) synapse by surrounding astrocytes. Although, in the adult, EAAC1/EAAT3 exhibits a rather low expressi...
journal_title:Journal of neurochemistry
pub_type: 杂志文章,评审
doi:10.1111/j.1471-4159.2006.03978.x
更新日期:2006-08-01 00:00:00
abstract::Reactive oxygen species (ROS) and oxidative stress have long been linked to cell death of neurons in many neurodegenerative conditions. However, the exact molecular mechanisms triggered by oxidative stress in neurodegeneration are at present unclear. In the current work we have used the human neuroblastoma SH-SY5Y cel...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2006.03914.x
更新日期:2006-08-01 00:00:00
abstract::Incretin-related therapy was found to be beneficial for experimental diabetic neuropathy, but its mechanism is obscure. The purpose of this study is to explore the mechanism through which dipeptidyl peptidase IV inhibitor, vildagliptin (VG), influences neuropathy in diabetic rodents. To this end, non-obese type 2 diab...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.13439
更新日期:2016-02-01 00:00:00
abstract::Agonist-induced down-regulation of opioid receptors appears to require the phosphorylation of the receptor protein. However, the identities of the specific protein kinases that perform this task remain uncertain. Protein kinase C (PKC) has been shown to catalyze the phosphorylation of several G protein-coupled recepto...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1999.0720585.x
更新日期:1999-02-01 00:00:00
abstract::We examined the effects of wild-type and mutant atlastin-1 on vesicle transport in the endoplasmic reticulum (ER)-Golgi interface and vesicle budding from ER-derived microsomes using the temperature-sensitive reporter vesicular stomatitis virus glycoprotein (VSV-G), and the ability of purified atlastin-1 to form tubul...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2009.06258.x
更新日期:2009-09-01 00:00:00
abstract::Cell aggregation is one of several environmental cues that influence the expression of neurotransmitter phenotype during development. The expression of the catecholaminergic phenotype is increased in rat pheochromocytoma cells cultured at high density. In the present study we have investigated whether this cell densit...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1994.62030844.x
更新日期:1994-03-01 00:00:00
abstract::We have previously shown that prolonged exposure to neurotrophins induces oxidative neuronal death. In the present study, we further examined the cascades involved in neurotrophin-4/5 (NT-4/5)-induced neuronal death. Exposure of mature cortical cultures for 48 h to NT-4/5 induced neuronal death through TrkB activation...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2003.02187.x
更新日期:2004-02-01 00:00:00
abstract::We have recently shown that disrupting the expression and post-synaptic clustering of gephyrin in cultured hippocampal pyramidal cells, by either gephyrin RNAi (RNA interference) or over-expression of a dominant negative gephyrin-enhanced green fluorescent protein (EGFP) fusion protein, leads to decreased number of po...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2007.05014.x
更新日期:2008-02-01 00:00:00
abstract::Cyclosporin A (CsA) is a clinically important immunosuppressive drug widely used to prevent graft rejection following organ or bone marrow transplantation. Although there are reports of serious neurologic alterations associated with the use of the drug, the precise mechanism of its action on the CNS still remains unkn...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1997.68031142.x
更新日期:1997-03-01 00:00:00
abstract::Rat cerebral cortex synaptosomes were exposed in superfusion to various depolarizing stimuli and the release of somatostatin-like immunoreactivity (SRIF-LI) was measured by means of a radioimmunoassay procedure. High KCl (9-50 mM) concentration dependently evoked SRIF-LI release; the evoked overflow reached a plateau ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1991.tb08287.x
更新日期:1991-10-01 00:00:00
abstract::The endocytotic uptake and intracellular decay of horseradish peroxidase isoenzymes C and A by cultured mouse neuroblastoma cells were analyzed quantitatively by a direct spectrophotometric assay. At concentrations below 1 mg/ml, the rate of uptake of the isoenzyme C was more than three times as much as the isoenzyme ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1981.tb02420.x
更新日期:1981-01-01 00:00:00
abstract::P25alpha is a protein normally expressed in oligodendrocytes and subcellular relocalization of p25alpha occurs in multiple system atrophy, Parkinson's disease and Lewy body dementia along with ectopic expression in neurons. Moreover, it accumulates in Lewy body inclusions with aggregated alpha-synuclein and is a poten...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2008.05437.x
更新日期:2008-07-01 00:00:00
abstract::The main objective of these studies was to determine whether the acute administration of choline to rats provides supplemental precursor that can be used to support acetylcholine synthesis when the demand for choline is increased by increasing neurotransmitter release. For these experiments, hippocampal and striatal s...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1989.tb09157.x
更新日期:1989-02-01 00:00:00