Abstract：
:Exogenous phospholipases have been used extensively as tools to study the role of membrane lipids in receptor mechanisms. We used in vitro quantitative autoradiography to evaluate the effect of phospholipase A2 (PLA2) on N-methyl-D-aspartate (NMDA) and non-NMDA glutamate receptors in rat brain. PLA2 pretreatment induced a significant increase in alpha-[3H]amino-3-hydroxy-5-methyl-isoxazole-4-propionate ([3H]AMPA) binding in the stratum radiatum of the CA1 region of the hippocampus and in the stratum moleculare of the cerebellum. No modification of [3H]AMPA binding was found in the stratum pyramidale of the hippocampus at different ligand concentrations. [3H]-Glutamate binding to the metabotropic glutamate receptor and the non-NMDA-, non-kainate-, non-quisqualate-sensitive [3H]glutamate binding site were also increased by PLA2 pretreatment. [3H]Kainate binding and NMDA-sensitive [3H]glutamate binding were minimally affected by the enzyme pretreatment. The PLA2 effect was reversed by EGTA, the PLA2 inhibitor p-bromophenacyl bromide, and prolonged pretreatment with heat. Bovine serum albumin (1%) prevented the increase in metabotropic binding by PLA2. Arachidonic acid failed to mimic the PLA2 effect on metabotropic binding. These results indicate that PLA2 can selectively modulate certain subtypes of excitatory amino acid receptors. This effect is due to the enzymatic activity but is probably not correlated with the formation of arachidonic acid metabolites. Independent of their possible physiological implications, our results provide the first autoradiographic evidence that an enzymatic treatment can selectively affect the binding properties of excitatory amino acid receptors in different regions of the CNS.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Catania MV,Hollingsworth Z,Penney JB,Young ABdoi
10.1111/j.1471-4159.1993.tb05843.xsubject
Has Abstractpub_date
1993-01-01 00:00:00pages
236-45issue
1eissn
0022-3042issn
1471-4159journal_volume
60pub_type
杂志文章abstract：:Ligand binding to the cannabinoid receptor of brain membranes has been characterized using [3H]CP 55,940 and the Multiscreen Filtration System. Binding of [3H]CP 55,940 is saturable and reaches equilibrium by 45 min at room temperature. At a concentration of 10 micrograms of membrane protein/well, the KD for [3H]CP 55...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.64020677.x
更新日期：1995-02-01 00:00:00
abstract：:We examined the effects of chronic (2 weeks) treatment with a typical neuroleptic, haloperidol (1 mg/kg, s.c.), and an atypical neuroleptic, clozapine (20 mg/kg, s.c.), on neurotensin receptor (NTR) mRNA levels by in situ hybridization histochemistry. Quantitative OD analysis showed haloperidol-induced NTR mRNA levels...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb03631.x
更新日期：1993-09-01 00:00:00
abstract：:Beta-carbolines have been suggested to be involved in the pathogenesis of Parkinson's disease as a result of their structural similarity to the neurotoxin N -methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). The chloral-derived beta-carboline derivative 1-trichloromethyl-1,2,3,4-tetrahydro-beta-carboline (TaClo) caus...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2002.00875.x
更新日期：2002-05-01 00:00:00
abstract：:From immunizations of mice with a glutathione S-transferase fusion protein containing residues 724-781 of the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor subunit GluR1-flop, two monoclonal antibodies (mAbs) were developed that differed widely in their ranges of specificity. In immunocytochemical ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：
更新日期：1999-11-01 00:00:00
abstract：:To identify the transductional mechanisms responsible for the neuroprotective effect of nitric oxide (NO) during ischemic preconditioning (IPC), we investigated the effects of this gaseous mediator on mitochondrial Mn-superoxide dismutase (Mn-SOD) expression and activity. In addition, the possible involvement of Ras/e...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04845.x
更新日期：2007-11-01 00:00:00
abstract：:Multiple C2 domains transmembrane protein 1 (MCTP1) contains two transmembrane regions and three C2 domains of high Ca(2+)-binding affinity. Single-nucleotide polymorphism (SNP) of human MCTP1 gene is reportedly associated with bipolar disorder, but expression and function of MCTP1 in the CNS is still largely unknown....
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.13251
更新日期：2015-11-01 00:00:00
abstract：:: The amyloid cascade hypothesis of Alzheimer's disease envisages that the initial elevation of amyloid β-peptide (Aβ) levels, especially of Aβ(1-42) , is the primary trigger for the neuronal cell death specific to onset of Alzheimer's disease. There is now substantial evidence that brain amyloid levels are manipulabl...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.2011.07510.x
更新日期：2012-01-01 00:00:00
abstract：:Abstract The dualistic activities of the amyloid beta (Abeta) peptide as a pro-oxidant and ubiquitous constituent of amyloid deposits in Alzheimer's disease plaques and as an antioxidant of purported physiological function has been suggested but the mechanisms are far from being understood. In this report we measure s...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2004.02778.x
更新日期：2004-11-01 00:00:00
abstract：:Previous studies showed that prolonged access to cocaine or heroin self-administration (long access, or LgA) produces an escalation in drug intake not observed with limited access to the drug (short access, or ShA). The present experiment employed in vivo microdialysis to test the role of alterations in drug pharmacok...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.01833.x
更新日期：2003-07-01 00:00:00
abstract：:Accumulation of misfolded proteins and alterations in the ubiquitin-proteasome pathway are associated with various neurodegenerative conditions of the CNS and PNS. Aggregates containing ubiquitin and peripheral myelin protein 22 (PMP22) have been observed in the Trembler J mouse model of Charcot-Marie-Tooth disease ty...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2004.02987.x
更新日期：2005-03-01 00:00:00
abstract：:The polypeptide composition and glycosylation of soluble isoforms of neural cell adhesion molecule (NCAM) in developing rat brain, CSF, and plasma were characterized. Soluble NCAM in rat brain consisted of several glycosylated isoforms. The degree of glycosylation was developmentally regulated. After desialylation, fo...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb08321.x
更新日期：1992-09-01 00:00:00
abstract：:The specific opioid receptor antagonist naloxone attenuates the behavioral and neurochemical effects of amphetamine. Furthermore, the amphetamine-induced increase in locomotor activity is attenuated by intracisternally administered naltrindole, a selective delta-opioid receptor antagonist, but not by the irreversible ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67062292.x
更新日期：1996-12-01 00:00:00
abstract：:Procedures are described for the solubilization of adenosine uptake sites in guinea pig and rat brain tissue. Using [3H]nitrobenzylthioinosine [( 3H]NBI) the solubilized site is characterized both kinetically and pharmacologically. The binding is dependent on protein concentration and is saturable, reversible, specifi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1985.tb04028.x
更新日期：1985-08-01 00:00:00
abstract：:Neurodegenerative diseases, such as Parkinson's disease, Alzheimer's disease, and Huntington's disease, are considered incurable and significantly reduce the quality of life of the patients. A variety of drugs that modulate neurotransmitter levels have been used for the treatment of the neurodegenerative diseases but ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14815
更新日期：2019-10-01 00:00:00
abstract：:The nervous tissue-specific protein B-50 (GAP-43), which has been implicated in the regulation of neurotransmitter release, is a member of a family of atypical calmodulin-binding proteins. To investigate to what extent calmodulin and the interaction between B-50 and calmodulin are involved in the mechanism of Ca(2+)-i...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.66051933.x
更新日期：1996-05-01 00:00:00
abstract：:We have demonstrated by indirect immunofluorescence the cellular localization of a monoclonal antibody (mAb 224-58), produced after immunization of a mouse with human central nervous system (CNS) myelin. Serologically, mAb 224-58 was found to be specific for 3'-sulfomonogalactosylglycolipids, namely 3'-sulfogalactosyl...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1986.tb12986.x
更新日期：1986-02-01 00:00:00
abstract：:We investigated the effect of chronically blocking NMDA receptor stimulation to examine changes in GABA(A) receptor expression and pharmacology in cerebellar granule cells at different stages of maturation. We have previously shown that NMDA-selective glutamate receptor stimulation alters GABA(A) receptor pharmacology...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1998.71020693.x
更新日期：1998-08-01 00:00:00
abstract：:The possibilities of interference by glycerophosphoryl ethanolamine (GPE) in the estimation of taurine levels in cerebral cortex, midbrain, cerebellum, medullapons, and spinal cord of developing human fetal brain regions were eliminated by hydrolyzing tissue extracts with 6 M HCl. Cysteic acid thus produced was separa...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1988.tb10564.x
更新日期：1988-04-01 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：:Isolated rat CNS mitochondria and cultured cortical astrocytes were examined for behavior indicative of a mitochondrial permeability transition (mPT). Exposure of isolated CNS mitochondria to elevated calcium or phosphate or both produced loss of absorbance indicative of mitochondrial swelling. The absorbance decrease...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1997.69020524.x
更新日期：1997-08-01 00:00:00
abstract：:Epilepsy is a serious neurological condition exhibiting complex pathology and deserving of more serious attention. More than 30% of people with epilepsy are not responsive to more than 20 anti-epileptic drugs currently available, reflecting an unmet clinical need for novel therapeutic strategies. Not much is known abo...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/jnc.14663
更新日期：2019-12-01 00:00:00
abstract：:Previous in vitro studies have shown that group III metabotropic glutamate receptors (mGluRs) regulate synaptic glutamate release. The present study used microdialysis to characterize this regulation in vivo in rat nucleus accumbens. Reverse dialysis of the group III mGluR agonist l-(+)-2-amino-4-phosphonobutyric acid...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.02093.x
更新日期：2003-12-01 00:00:00
abstract：:We demonstrate that 1-methyl-4-phenylpyridinium (MPP+) is toxic to chick peripheral sympathetic neurons maintained in culture in the presence of nerve growth factor (NGF). When MPP+ was added to the culture medium at the time the neurons were plated, cell loss after 3 days in culture was evident at concentrations as l...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67020557.x
更新日期：1996-08-01 00:00:00
abstract：:The tracers 6-[18F]fluoro-L-3,4-dihydroxyphenylalanine (6-[18F]fluoro-L-DOPA) and L-[14C]DOPA were injected simultaneously into rhesus monkeys, and the time course of their metabolites was measured in the striatum and in the occipital and frontal cortices. In the striatum, 6-[18F]fluoro-L-DOPA was metabolized to 6-[18...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb05629.x
更新日期：1987-04-01 00:00:00
abstract：:We have characterised the induction of the mitogen-inducible form of cyclooxygenase, COX-2, in the rat cerebral cortex in response to excitotoxin injection into the nucleus basalis. This model is associated with intense stimulation of the ascending pathway to the cerebral cortex, seizure activity, and subsequent ipsil...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.66010006.x
更新日期：1996-01-01 00:00:00
abstract：:The purpose of the present study was to clarify the expression, transport properties and regulation of ATP-binding cassette G2 (ABCG2) transporter at the rat blood-brain barrier (BBB). The rat homologue of ABCG2 (rABCG2) was cloned from rat brain capillary fraction. In rABCG2-transfected HEK293 cells, rABCG2 was detec...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2004.02537.x
更新日期：2004-08-01 00:00:00
abstract：:Cross-talk between cannabinoid CB1 and serotonin 5-HT receptors in rat cerebellar membranes was investigated using radioligand binding. In competition against the CB1 antagonist, [3 H]SR141716A, the agonist, WIN 55,212-2 yielded a biphasic isotherm. The majority of binding was to a high-affinity state that was signifi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.0022-3042.2002.00797.x
更新日期：2002-03-01 00:00:00
abstract：:Tissue plasminogen activator (tPA) administration beyond 4.5 h of stroke symptoms is beneficial for patients but has an increased risk of cerebral hemorrhage. Thus, increasing the therapeutic window of tPA is important for stroke recovery. We previously showed that prothymosin alpha (ProTα) or its mimetic hexapeptide ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14858
更新日期：2020-06-01 00:00:00
abstract：:Dopamine and norepinephrine are involved in regulation of melatonin synthesis in the pineal gland. In bovine pineal gland, D1- and D2-dopaminergic and alpha 1-adrenergic receptors have been characterized pharmacologically in several laboratories, while beta 1-adrenergic receptors have been studied using physiological ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1991.tb06383.x
更新日期：1991-11-01 00:00:00
abstract：:Alzheimer's disease (AD) is a neurodegenerative disorder in which oxidative stress has been implicated as an important event in the progression of the pathology. In particular, it has been shown that protein modification by reactive oxygen species (ROS) occurs to a greater extent in AD than in control brain, suggestin...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2002.01103.x
更新日期：2002-09-01 00:00:00
