Abstract:
:In situ phosphorylation of the presynaptic protein kinase C substrate B-50 was investigated in rat hippocampal slices incubated with the convulsant drug 4-aminopyridine (4-AP). Phosphorylation of B-50 was significantly enhanced 1 min after the addition of 4-AP (100 microM). This increase by 4-AP was concentration dependent (estimated EC50 30-50 microM). Concomitant with the changes in B-50 phosphorylation, 4-AP also dose-dependently stimulated [3H]noradrenaline [( 3H]NA) release from the slices. 4-AP stimulated [3H]NA release within 5 min to seven times the control level. The B-50 phosphorylation induced by 4-AP remained elevated after removal of the convulsant, this is contrast to B-50 phosphorylation induced by depolarization with K+. A similar persistent increase was observed for [3H]NA release after a 5-min incubation period with 4-AP. These results give more insight into the molecular mechanisms underlying 4-AP-induced epileptogenesis and provide further evidence for the correlation between B-50 phosphorylation and neurotransmitter release in the hippocampal slice.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Heemskerk FM,Schrama LH,Gianotti C,Spierenburg H,Versteeg DH,De Graan PN,Gispen WHdoi
10.1111/j.1471-4159.1990.tb02331.xsubject
Has Abstractpub_date
1990-03-01 00:00:00pages
863-9issue
3eissn
0022-3042issn
1471-4159journal_volume
54pub_type
杂志文章abstract::We applied a differential display PCR technique to isolate molecules that are area-specific in expression in the primate neocortex, and found that growth/differentiation factor 7 (GDF7), a member of the bone morphogenetic protein (BMP)/transforming growth factor (TGF) beta super-family, is preferentially expressed in ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2001.00177.x
更新日期:2001-03-01 00:00:00
abstract::Prenatal and early postnatal periods are important for brain development and neural function. Neonatal insults such as hypoxia-ischemia (HI) causes prolonged neural and metabolic dysregulation, affecting central nervous system maturation. There is evidence that brain hypometabolism could increase the risk of adult-ons...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.15221
更新日期:2020-10-23 00:00:00
abstract::The decrease in receptor-stimulated cyclic AMP production after chronic ethanol exposure was suggested previously to be secondary to an ethanol-induced increase in extracellular adenosine. The present study was undertaken to ascertain whether a similar mechanism was responsible for the ethanol-induced desensitization ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1993.tb03249.x
更新日期:1993-03-01 00:00:00
abstract::Calcium influx into SH-SY5Y human neuroblastoma cells after ionophore treatment or transient permeabilization in calcium-containing medium increased ALZ-50 immunoreactivity markedly. This increase was prevented by inhibitors active against calpain or against protein kinase C (PKC), suggesting that both of these enzyme...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1996.66041539.x
更新日期:1996-04-01 00:00:00
abstract::Quinolinic acid is an excitatory, neurotoxic tryptophan metabolite proposed to play a role in the pathogenesis of hepatic encephalopathy. This involvement was investigated in rat and rabbit models of fulminant hepatic failure at different stages of hepatic encephalopathy. Although plasma and brain tryptophan levels we...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1995.64062607.x
更新日期:1995-06-01 00:00:00
abstract::We have previously reported that insulin/insulin-like growth factor (IGF)-I induced the alpha 1 isoform of Na+,K(+)-ATPase in cultured astrocytes. In this study the effects of insulin/IGF-I on Na+,K(+)-ATPase activity and cell proliferation were examined in astrocytes cultured under the various conditions, to test the...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1996.66020511.x
更新日期:1996-02-01 00:00:00
abstract::The mechanism of attachment of acetylcholinesterase (AChE) to neuronal membranes in interneuronal synapses is poorly understood. We have isolated, sequenced, and cloned a hydrophobic protein that copurifies with AChE from human caudate nucleus and that we propose forms a part of a complex of membrane proteins attached...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2000.0742146.x
更新日期:2000-05-01 00:00:00
abstract::Microtubule-associated proteins (MAPs) were phosphorylated by a Ca2+- and calmodulin-dependent protein kinase from rat brain cytosol. The maximal amount of phosphate incorporated into MAPs was 25 nmol of phosphate/mg protein. A Ka value of the enzyme for calmodulin was 57.0 nM, with MAPs as substrates. Among MAPs, MAP...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1983.tb09060.x
更新日期:1983-10-01 00:00:00
abstract::To test the hypothesis that neuroinflammation contributes to dopaminergic neuron death in the MPTP-lesioned mouse, we compared nigrostriatal degeneration in interleukin (IL)-6 (+/+) with IL-6 (-/-) mice. In the absence of IL-6, a single injection of MPTP (30 mg/kg) resulted in significantly greater striatal dopamine d...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2002.01131.x
更新日期:2002-10-01 00:00:00
abstract::Activation of microglia, the resident macrophages of the brain, around the amyloid plaques is a key hallmark of Alzheimer's disease (AD). Recent evidence in mouse models indicates that microglia are required for the neurodegenerative process of AD. Amyloid-β (Aβ) peptides, the core components of the amyloid plaques, c...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2011.07594.x
更新日期:2012-02-01 00:00:00
abstract::In contrast to typical neuroleptic drugs, which have high affinities for dopamine D2 receptors, clozapine binds to multiple neurotransmitter receptors. The mechanisms responsible for its superior clinical efficacy over typical neuroleptics remain unknown. Using an automated genomics approach, total gene expression ana...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2001.00027.x
更新日期:2001-02-01 00:00:00
abstract::Although isoelectric focusing has been used to demonstrate the presence of oligoclonal IgG in the CSF, the technique has not allowed detection of oligoclonal IgG in unconcentrated CSF. A new technique is reported, by which unconcentrated CSF is separated by isoelectric focusing, and the IgG bands are then detected by ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1981.tb00445.x
更新日期:1981-05-01 00:00:00
abstract::The uptake of radioactive biotin has been studied in glial cell cultures from dissociated cerebral hemispheres of newborn rats. We describe saturable kinetics for the biotin uptake at biotin concentrations of less than 60 nM and linear at greater than 60 nM. The uptake appeared temperature sensitive, Na+ independent, ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1992.tb11364.x
更新日期:1992-04-01 00:00:00
abstract::Before this study, the human norepinephrine transporter (hNET) was the only member of the biogenic amine neurotransmitter transporter family that had not been demonstrated to be a functional homo-oligomer. Here, using two forms of the transporter, I155C and hNET-myc, with distinct antigenicity and inhibitor sensitivit...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2003.01793.x
更新日期:2003-06-01 00:00:00
abstract::The study of aging is critical for a better understanding of many age-related diseases. The free radical theory of aging, one of the prominent aging hypotheses, holds that during aging, increasing reactive oxygen species in mitochondria causes mutations in the mitochondrial DNA and damages mitochondrial components, re...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2004.02884.x
更新日期:2005-02-01 00:00:00
abstract::A cDNA clone encoding a novel G protein-linked receptor was isolated from a rat cerebral cortex cDNA library using a polymerase chain reaction-amplified cDNA fragment as a probe. This 2.4-kb clone encodes a 367 amino acid protein with seven putative transmembrane spanning domains. The protein is highly homologous to t...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1995.64010034.x
更新日期:1995-01-01 00:00:00
abstract::Amyloid-β peptide (Aβ) concentration in CSF is potentially a diagnostic and therapeutic target for Alzheimer's disease (AD). The purpose of this study was to clarify the elimination mechanism of human Aβ(1-40) [hAβ (1-40)] from CSF. After intracerebroventricular (ICV) administration, [(125) I]hAβ(1-40) was eliminated ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2011.07311.x
更新日期:2011-08-01 00:00:00
abstract::Previous studies have demonstrated opposing roles for adenosine A1 and A2A receptors in the modulation of extracellular levels of glutamate and dopamine in the striatum. In the present study, acute systemic administration of motor-activating doses of the A2A receptor antagonist MSX-3 significantly decreased extracellu...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2003.02245.x
更新日期:2004-03-01 00:00:00
abstract::The effect of quisqualate, an excitatory amino acid agonist, on the breakdown of exogenously added phosphatidylinositol was investigated in a membrane preparation from the cerebellum of young rats. Quisqualate stimulated phospholipase C activity in a dose-dependent manner in the presence of guanosine 5'-O-(3-thiotriph...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1992.tb09776.x
更新日期:1992-02-01 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::Neurofibrillary tangles (NFTs) consisting of the hyperphosphorylated microtubule-associated protein tau are a defining pathological characteristic of Alzheimer's disease (AD). Hyperphosphorylation of tau is hypothesized to impair the microtubule stabilizing function of tau, leading to the formation of paired helical f...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2003.02070.x
更新日期:2003-12-01 00:00:00
abstract::Interleukin-1β (IL-1β) is released from activated microglia and involved in the neurodegeneration of acute and chronic brain disorders, such as stroke and Alzheimer's disease, in which extracellular acidification has been shown to occur. Here, we examined the extracellular acidic pH regulation of IL-1β production, esp...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.12661
更新日期:2014-05-01 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::Cytidine, as cytidine 5'-diphosphate choline, is a major precursor in the synthesis of phosphatidylcholine in cell membranes. In the present study, we examined the relationships between extracellular levels of cytidine, the conversion of [14C]choline to [14C]phosphatidylcholine, and the net syntheses of phosphatidylch...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1992.tb08909.x
更新日期:1992-07-01 00:00:00
abstract::The incorporation of radioactive precursors into gangliosides and other glycolipids, glycoproteins, and total lipids has been studied in rat pheochromocytoma PC12 cells. Starting with the same PC12 cell pool, cultures displaying different degrees of neuritic expression in response to nerve growth factor (NGF) and comb...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1986.tb13006.x
更新日期:1986-02-01 00:00:00
abstract::In this study, we have investigated the effect of mivazerol, [3-(1H-imidazol-4-yl)methyl-1]-2-hydroxy-benzamide hydrochloride, a new alpha2-agonist lacking hypotensive properties and a potential anti-ischemic drug, on the evoked release of norepinephrine, aspartate, and glutamate in tissue preparations from hippocampu...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1996.67020636.x
更新日期:1996-08-01 00:00:00
abstract::Hypoxia-inducible factor prolyl 4-hydroxylases (HIF-PHDs) are important targets against oxidative stress. We hypothesized that inhibition HIF-PHD by adaptaquin reduces hypoxic-ischemic brain injury in a neonatal mouse model. The pups were treated intraperitoneally immediately with adaptaquin after hypoxia-ischemia (HI...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.14790
更新日期:2019-09-01 00:00:00
abstract::The [14C]deoxyglucose [Sokoloff et al., J. Neurochem. 28, 897-916 (1977)] and [6-14C]glucose [Hawkins et al., Am. J. Physiol. 248, C170-C176 (1985)] quantitative autoradiographic methods were used to measure regional brain glucose utilization in awake rats. The spatial resolution and qualitative appearance of the auto...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1987.tb01028.x
更新日期:1987-11-01 00:00:00
abstract::In invertebrates, the phenolamines, tyramine and octopamine, mediate many functional roles usually associated with the catecholamines, noradrenaline and adrenaline, in vertebrates. The α- and β-adrenergic classes of insect octopamine receptor are better activated by octopamine than tyramine. Similarly, the Tyramine 1 ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.12158
更新日期:2013-04-01 00:00:00
abstract::Glial glutamate transporter-1 (GLT-1) is the predominant subtype of glutamate transporters which are responsible for the homeostasis of extracellular glutamate. Our previous studies have shown that up-regulation in GLT-1 protein expression matches brain ischemic tolerance induced by cerebral ischemic preconditioning (...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2011.07396.x
更新日期:2011-10-01 00:00:00