Abstract：
:The kappa-opioid receptor agonists including U-50,488H and dynorphin A (1-17) in ranges of 0.1-100 nM inhibited the hydrolysis of GTP to GDP (P(i) release) inherent in GTP-binding proteins (G proteins) in guinea pig cerebellar membranes. U-50,488H inhibited only high-affinity GTPase activity, not low-affinity activity. The action of this agonist was found to be biphasic, and there was no inhibition at concentrations > 1 microM. The inhibition was abolished by pretreatment with preactivated pertussis toxin (PTX) at concentrations > 1 micrograms/ml but not with preactivated cholera toxin (30 micrograms/ml). Similar blockade of kappa-receptor-mediated inhibition was also observed when membranes were pretreated with a low concentration (8 microM) of N-ethylmaleimide (NEM) at low temperature (4 degrees C), which alkylates the cysteine residue to be ADP-ribosylated by PTX; but this treatment caused no significant change in kappa-agonist binding. When purified Gi1, but not G(o), was reconstituted into membranes pretreated with NEM, the kappa-receptor-mediated inhibition was recovered. These findings suggest that a subtype of kappa-opioid receptor is coupled to inhibition of intrinsic activity of Gi1.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Ueda H,Misawa H,Fukushima N,Katada T,Ui M,Satoh Mdoi
10.1046/j.1471-4159.1996.66020845.xsubject
Has Abstractpub_date
1996-02-01 00:00:00pages
845-51issue
2eissn
0022-3042issn
1471-4159journal_volume
66pub_type
杂志文章abstract：:The characteristics of beta-alanine transport at the blood-brain barrier were studied by using primary cultured bovine brain capillary endothelial cells. Kinetic analysis of the beta-[3H]alanine transport indicated that the transporter for beta-alanine functions with Kt of 25.3 +/- 2.5 microM and Jmax of 6.90 +/- 0.48...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67010330.x
更新日期：1996-07-01 00:00:00
abstract：:Pretreatment of rats with the excitatory amino acid antagonist 2-amino-7-phosphonoheptanoic acid (2-APH; 0.5 mmol/kg, i.p.) protected against insulin-induced clonic seizures. Complete protection was observed in 38% of the rats and partial protection in an additional 50%. Lesioning of the corticostriatal pathway by fro...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb03403.x
更新日期：1987-07-01 00:00:00
abstract：:The nuclear mitochondrial and synaptosomal fractions of rat brain were each found to contain some 25-30% of the total aldehyde dehydrogenase activity. The cytoplasmic fraction had a very low total aldehyde dehydrogenase activity. There were differences in the distribution of the activity when different aldehydes were ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1981.tb10812.x
更新日期：1981-06-01 00:00:00
abstract：:Dietary lipids modify brain fatty acid profile, but evidence of their direct effect on neuronal function is sparse. The enthorinal cortex (EC) neurons connecting to the hippocampus play a critical role in learning and memory. Here, we have exposed mice to diets based on canola:soybean oils (40 : 10, g/kg) or safflower...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2012.07772.x
更新日期：2012-07-01 00:00:00
abstract：:Lipid peroxidation has been postulated as a cause of neuronal damage in both aging and neurodegenerative disease. In studies of neurodegenerative disease, iron, iron plus ascorbate, or ascorbate alone has been used to stimulate lipid peroxidation. The mechanism by which ascorbate stimulates lipid peroxidation in human...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67020717.x
更新日期：1996-08-01 00:00:00
abstract：:Extracts of rat tissues were subjected to ultracentrifugation on linear density gradients of sucrose (5-20%) and fractions of these gradients were analyzed for acetylcholinesterase (AChE) activity. Most of the AChE activity in extracts of vagus nerve was found to sediment at 10S. However, 16S AChE, previously thought ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1980.tb07870.x
更新日期：1980-11-01 00:00:00
abstract：:The rat ATP P2X4 receptor was expressed in Xenopus laevis oocytes to assess the effect of zinc and copper as possible regulators of purinergic mechanisms. ATP applied for 20 s evoked an inward cationic current with a median effective concentration (EC50) of 21.4+/-2.8 microM and a Hill coefficient (nH) of 1.5+/-0.1. C...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2000.0741529.x
更新日期：2000-04-01 00:00:00
abstract：:Rat cerebellar granule cells differentiated in culture were fed [1-(3)H]sphingosine, allowing the metabolic radiolabelling of all cell sphingolipids and phosphatidylethanolamine. A detergent-insoluble sphingolipid-enriched membrane fraction, containing about 60% of cell sphingolipids, but only trace amounts of phospha...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2001.00515.x
更新日期：2001-09-01 00:00:00
abstract：:The effects of the protein kinase inhibitor H-7 on early and delayed responses to nerve growth factor (NGF) were investigated in PC12 cells. H-7 reduced the NGF-induced expression of c-Fos in a dose-dependent manner without affecting the time course of c-Fos appearance. Conversely, H-7 potentiated delayed NGF effects,...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1994.62020479.x
更新日期：1994-02-01 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：:Previous work in this laboratory has shown that adrenal medullary transplants into the spinal cord subarachnoid space can reduce pain sensitivity. This analgesia most likely results from the release of neuroactive substances, particularly catecholamines and opioid peptides, from the transplanted cells into the CSF of ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1991.tb08195.x
更新日期：1991-02-01 00:00:00
abstract：:Proper brain function in the nervous system relies on the accurate establishment of synaptic contacts during development. Countless synapses populate the adult brain in an orderly fashion. In each synapse, a presynaptic terminal loaded with neurotransmitters-containing synaptic vesicles is perfectly aligned to an arra...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/jnc.13702
更新日期：2016-12-01 00:00:00
abstract：:The processes of acetylation, phosphorylation, and methylation of nuclear proteins in cerebral hemispheres of 10- and 30-day-old rats were investigated. The experiments were carried out in vitro by measuring the incorporation of labeled precursors into histones and nonhistone chromosomal proteins (NHP) extracted from ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1983.tb08041.x
更新日期：1983-03-01 00:00:00
abstract：:The distribution of type I calmodulin-sensitive adenylyl cyclase in bovine and rat tissues was examined by northern blot analysis and in situ hybridization. Northern blot analysis using poly(A)(+)-selected RNA from various bovine tissues indicated that mRNA for type I adenylyl cyclase was found only in brain, retina, ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb05852.x
更新日期：1993-01-01 00:00:00
abstract：:To provide insights into the effects of temporary focal ischemia on the function of neurons and astrocytes in vivo, we measured the incorporation of radiolabel from [U-14C]glucose into both glutamate and glutamine in brain subregions at 1 h of reperfusion following occlusion of the middle cerebral artery for 2 or 3 h....
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.03778.x
更新日期：2006-05-01 00:00:00
abstract：:The effect of docosahexaenoic acid (DHA) on neuronal survival was studied in cultured cells isolated from newborn rat retina. In vivo, the content of DHA in the retina increased nearly fourfold from days 2 to 12 after birth, whereas in retinal cells in culture it remained constant. Unlike amacrine cells, the photorece...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.66051851.x
更新日期：1996-05-01 00:00:00
abstract：:Metabotropic glutamate receptor (type 1; mGluR1) is expressed predominantly in the hippocampus and the cerebellum. Using cultured cerebellar granule cells, we investigated the regulation of the mGluR1 mRNA expression. Levels of mGluR1 mRNA were decreased to less than half by high potassium stimulation and by glutamate...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb05845.x
更新日期：1993-01-01 00:00:00
abstract：:Circulating antibody to the bovine white matter proteolipid apoprotein was detected in rabbits 1 month ater a single injection of the water-soluble form of the apoprotein. By double immunodiffusion, the antiserum reacted specifically with the delipidated proteolipid apoprotein and the crude proteolipid fraction contai...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1981.tb02383.x
更新日期：1981-01-01 00:00:00
abstract：:Acetylcholine is a key neurotransmitter of the inner ear efferent system. In this study, we identify two novel nAChR subunits in the inner ear: α1 and γ, encoded by Chrna1 and Chrng, respectively. In situ hybridization shows that the messages of these two subunits are present in vestibular and cochlear hair cells duri...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04980.x
更新日期：2007-12-01 00:00:00
abstract：:Organotypic rat hippocampal slice cultures were used to study the role of excitatory amino acid transporters (EAATs) in kainate-induced cell death. Expression of the neuronal (EAAT3) or glial (EAAT2) transporters was inhibited with antisense phosphothioate oligonucleotides, and cytotoxicity was assessed with propidium...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：
更新日期：1999-11-01 00:00:00
abstract：:Each of the known classes of mammalian glycosaminoglycans, with the exception of keratan sulphate, was found in cerebral cortex samples from patients with Alzheimer-type dementia and age-matched controls. These molecules were quantitated, after electrophoresis and staining with Alcian Blue dye, by scanning densitometr...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1988.tb01135.x
更新日期：1988-11-01 00:00:00
abstract：:Capsaicin receptors are expressed in primary sensory neurons and excited by heat and protons. We examined the inflammation-induced changes of the level of VR1 capsaicin receptor mRNA in sensory neurons and the sensitivity of primary afferents to capsaicin. Carrageenan treatment induced axonal transport of VR1 mRNA, bu...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2001.00193.x
更新日期：2001-03-01 00:00:00
abstract：:Exosomes are small extracellular vesicles released by almost all cell types in physiological and pathological conditions. The exosomal potential to unravel disease mechanisms, or to be used as a source of biomarkers, is being explored, in particularly in the field of neurodegenerative diseases. Alzheimer's disease (AD...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/jnc.15112
更新日期：2020-07-03 00:00:00
abstract：:msec7-1, a mammalian homologue of yeast sec7p, is known as a GDP/GTP exchange factor (GEF) for the ADP ribosylation factor (ARF) family of small GTPases. Here, we report that msec7-1 overexpression in cultured Aplysia neurons leads to an extensive neuritogenesis in a GEF activity-dependent manner through the modulatio...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.01718.x
更新日期：2003-04-01 00:00:00
abstract：:Oxidative stress and free radical damage have been implicated in the neurodegenerative changes characteristic of several neurodegenerative diseases, including Alzheimer's disease. There is experimental evidence that the neurotoxicity of beta-amyloid is mediated via free radicals, and as the deposition of beta-amyloid ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1997.68041590.x
更新日期：1997-04-01 00:00:00
abstract：:Synaptosomal-associated protein of 25 kDa (SNAP-25) is thought to play a key role in vesicle exocytosis and in the control of transmitter release. However, the precise mechanisms of action as well as the regulation of SNAP-25 remain unclear. Here we show by immunoprecipitation that activation of protein kinase C (PKC)...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.721699.x
更新日期：1999-04-01 00:00:00
abstract：:We report here that anti-L1 antiserum, raised against material from embryonic brain, and anti-NILE antiserum, raised against purified NILE (nerve growth factor-inducible large external) glycoprotein of PC12 cells, immunoprecipitate from PC12 cells material of the same apparent molecular weight (230 kilodaltons) by sod...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1986.tb04533.x
更新日期：1986-08-01 00:00:00
abstract：:The mouse myelin proteolipid protein (PLP) gene has been studied in normal and jimpymsd mice. Potential upstream regulatory regions of the normal gene have been cloned and mapped, but when these regions were studied in jimpymsd mice by Southern blots, no alterations were observed, relative to the normal gene. To asses...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1991.tb02576.x
更新日期：1991-01-01 00:00:00
abstract：:Interleukin-6 (IL-6) is involved in the pathophysiology of various diseases of the CNS. Because the molecular mechanism of action of this cytokine in human neurons is not well understood, we were interested in characterizing and defining a model system for IL-6-induced activation of signal transduction cascades, trans...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：
更新日期：1999-11-01 00:00:00
abstract：:When isolated myelin membranes were ADP-ribosylated by [32P]NAD+ either in the absence of toxin (by the membrane ADP-ribosyltransferase) or in the presence of cholera toxin, the same proteins were ADP-ribosylated in both cases and myelin basic protein (MBP) was the major radioactive product. Therefore, cholera toxin w...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1994.63010351.x
更新日期：1994-07-01 00:00:00
