Abstract：
:Ischemia-induced changes in 31P NMR relaxation were examined in 16 piglets. NMR spectra were acquired under control conditions and during complete cerebral ischemia induced via cardiac arrest. Changes in T1 were assessed directly in six animals during control conditions and after 30-45 min of complete ischemia when changes in brain Pi levels had reached a plateau. The T1 for Pi did not change, i.e., 2.3 +/- 0.5 s during control conditions versus 2.4 +/- 1.0 s during ischemia. To evaluate phosphocreatine and ATP, two types of spectra, with a long (25-s) or short (1-s) interpulse delay time, were collected during the first 10 min of ischemia (n = 10). Both types of spectra showed the same time course of changes in phosphocreatine and ATP levels, implying that the T1 relaxation times do not change during ischemia. There were no changes in the linewidths of phosphocreatine, ATP, or Pi during ischemia, implying that the T2* values remain constant. Our results suggest that the 31P T1 and T2* for phosphocreatine, Pi, and ATP do not change during ischemia, and therefore changes in 31P NMR peak intensity accurately reflect changes in metabolite concentrations.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Corbett RJ,Laptook ARdoi
10.1111/j.1471-4159.1993.tb03549.xsubject
Has Abstractpub_date
1993-07-01 00:00:00pages
144-9issue
1eissn
0022-3042issn
1471-4159journal_volume
61pub_type
杂志文章abstract：:The kinetics of the reactions of nine opioid peptides with the neutral endopeptidase ("enkephalinase") activities of human kidney, rat kidney, and rat brain have been determined. These opioid peptides can be divided into two classes, those that are good inhibitors of Leu5-enkephalin hydrolysis (Ki less than 75 microM)...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1984.tb00925.x
更新日期：1984-08-01 00:00:00
abstract：:Incorporation of [1-14C]palmitic acid into neutral lipids and phospholipids of rat cerebral cortex was examined in vitro in normal Krebs--Ringer bicarbonate buffer containing 3% (wt/vol) albumin and 0.75 mM palmitic acid. Under standard assay conditions, radioactivity in the triacylglycerol fraction increased rapidly ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1982.tb07914.x
更新日期：1982-05-01 00:00:00
abstract：:Alzheimer's disease (AD) belongs to one of the most multifactorial, complex and heterogeneous morbidity-leading disorders. Despite the extensive research in the field, AD pathogenesis is still at some extend obscure. Mechanisms linking AD with certain comorbidities, namely diabetes mellitus, obesity and dyslipidemia, ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/jnc.14256
更新日期：2018-02-01 00:00:00
abstract：:Presynaptic receptors modulating the release of acetylcholine (ACh) were studied in fetal septal neurons cultured in a growth medium to which various drugs were added from day 3 in vitro (DIV 3) to DIV 14. The influence of these drugs on the function of the presynaptic muscarinic (M-) autoreceptor was determined at DI...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04598.x
更新日期：2007-08-01 00:00:00
abstract：:In the rat parotid gland, substance P has been shown to induce a phosphatidylinositol bisphosphate breakdown resulting in an inositol trisphosphate production. These data suggested that substance P activated a phospholipase C and thus mediated its effects through the calcium-phospholipid pathway. To determine which ne...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb10980.x
更新日期：1992-06-01 00:00:00
abstract：:Highly purified noradrenergic, large, dense-cored vesicles were isolated from bovine sympathetic nerve endings by sucrose-D2O density gradient centrifugation. Their concentration of glycoprotein hexosamine and sialic acid was 6.6 and 3.9 mumol/100 mg lipid-free dry weight, respectively, values which are similar to tho...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb02445.x
更新日期：1987-12-01 00:00:00
abstract：:Cytokines have been suggested to be involved in the cross talk between the immune and the nervous systems, under normal and pathological conditions. For example, the cytokine interleukin-2 was suggested to be involved in response to CNS trauma and spontaneous regeneration. Here, we examined whether mammalian CNS has a...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.64051928.x
更新日期：1995-05-01 00:00:00
abstract：:Neuronal nicotinic acetylcholine receptors are differentially sensitive to blockade by the competitive antagonist dihydro-beta-erythroidine. Both alpha and beta subunits participate in determining sensitivity to this antagonist. The alpha subunit contribution to dihydro-beta-erythroidine sensitivity is illustrated by ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67051953.x
更新日期：1996-11-01 00:00:00
abstract：:The sodium-coupled, hemicholinium-3-sensitive, high-affinity choline transporter (CHT) is responsible for transport of choline into cholinergic nerve terminals from the synaptic cleft following acetylcholine release and hydrolysis. In this study, we address regulation of CHT function by plasma membrane cholesterol. We...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.12490
更新日期：2014-03-01 00:00:00
abstract：:We have examined some of the characteristics of phorbol ester- and agonist-induced down-regulation of astrocyte receptors coupled to phosphoinositide metabolism. Our results show that preincubation of [3H]inositol-labelled astrocyte cultures with phorbol 12-myristate 13-acetate (PMA) resulted in a time- (t 1/2, 1-2 mi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1988.tb03002.x
更新日期：1988-03-01 00:00:00
abstract：:Phosphorylation of G protein-coupled receptors is considered an important step during their desensitization. In SK-N-BE cells, recently presented as a pertinent model for the studies of the human delta-opioid receptor, pretreatment with the opioid agonist etorphine increased time-dependently the rate of phosphorylatio...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1998.70052129.x
更新日期：1998-05-01 00:00:00
abstract：:Galactosyltransferase activities were examined in the cerebellum, cerebral cortex, and brain stem of reeler and wild-type mice. Galactosyltransferase assays were optimal for all required substrates, linear with incubation time, and proportional to protein concentration. In brain areas affected by the reeler mutation (...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1982.tb04719.x
更新日期：1982-07-01 00:00:00
abstract：:The protein B-50 is dephosphorylated in rat cortical synaptic plasma membranes (SPM) by protein phosphatase type 1 and 2A (PP-1 and PP-2A)-like activities. The present studies further demonstrate that B-50 is dephosphorylated not only by a spontaneously active PP-1-like enzyme, but also by a latent form after pretreat...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb08913.x
更新日期：1992-07-01 00:00:00
abstract：:Recent evidence indicates that supplementation with a specific combination of nutrients may affect cell membrane synthesis and composition. To investigate whether such nutrients may also modify the physical properties of membranes, and affect membrane-bound processes involved in signal transduction pathways, we studie...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2011.07616.x
更新日期：2012-02-01 00:00:00
abstract：:We investigated the mechanism of increases in cyclic GMP levels in bovine superior cervical ganglion (SCG) in response to muscarinic receptor stimulation. Acetylcholine increased cyclic GMP levels in SCG. This increase was inhibited by NG-methyl-L-arginine (NMA), and the inhibition was reversed by L-arginine. Soluble ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb03628.x
更新日期：1993-09-01 00:00:00
abstract：:Agmatine (decarboxylated arginine) was originally identified in the CNS as an imidazoline receptor ligand. Further studies demonstrated that agmatine antagonizes NMDA receptors and inhibits nitric oxide synthase. Intrathecally administered agmatine inhibits opioid tolerance and hyperalgesia evoked by inflammation, ner...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04647.x
更新日期：2007-09-01 00:00:00
abstract：:We have assessed the expression, molecular identification and functional role of Na+ channels (Na(v)) in carotid bodies (CB) obtained from normoxic and chronically hypoxic adult rats. Veratridine evoked release of catecholamines (CA) from an in vitro preparation of intact CBs obtained from normoxic animals, the respon...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04465.x
更新日期：2007-07-01 00:00:00
abstract：:The effects of fatty acids, oleate and palmitate, on gamma-aminobutyric acid (GABA), aspartate, and 3,4- dihydroxyphenylethylamine (dopamine) transport and a variety of other membrane functions were studied in rat brain synaptosomes at a constant lipid-to-protein ratio. Under the conditions utilized oleate, but not pa...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1984.tb12765.x
更新日期：1984-06-01 00:00:00
abstract：:The nuclear factor 1 (NF-1) motifs, NF-1 II/III, In the two 98-bp repeats of the transcription-regulatory region of JC virus (JCV), have a critical role in brain-specific transcription from the JCV early promoter-enhancer. In this study, the role of these motifs in transactivation of the JCV late promoter-enhancer (JC...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67020473.x
更新日期：1996-08-01 00:00:00
abstract：:Tau pathologically aggregates in Alzheimer's disease, and evidence suggests that reducing tau expression may be safe and beneficial for the prevention or treatment of this disease. We sought to examine the role of the 3'-untranslated region (3'-UTR) of human tau mRNA in regulating tau expression. Tau expresses two 3'-...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.12437
更新日期：2013-12-01 00:00:00
abstract：:The c-ret protooncogene encodes Ret, the functional tyrosine kinase receptor for glial cell line-derived neurotrophic factor (GDNF). K-252b, a known protein tyrosine kinase inhibitor, has been shown earlier to inhibit the trophic activity of brain-derived neurotrophic factor on dopaminergic (DAergic) neurons and nerve...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1997.69030986.x
更新日期：1997-09-01 00:00:00
abstract：:To investigate the role of the retinoblastoma protein pRB in neuronal differentiation, we have measured the accumulation of hypophosphorylated pRB in PC12 cells stimulated by nerve growth factor (NGF). NGF induced the accumulation of hypophosphorylated pRB within 30 min and the level peaked after 12 h. Viral Kiras, cy...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.66062287.x
更新日期：1996-06-01 00:00:00
abstract：:Progressive supranuclear palsy (PSP) is a neurodegenerative movement disorder of unknown etiology. We hypothesized that mitochondrial DNA (mtDNA) aberration could occur in this disease and contribute to its pathogenesis. To address this we created transmitochondrial cytoplasmic hybrid (cybrid) cell lines expressing mi...
journal_title：Journal of neurochemistry
pub_type： 临床试验,杂志文章
doi：10.1046/j.1471-4159.2000.0751681.x
更新日期：2000-10-01 00:00:00
abstract：:Microglial activation is common in several neurodegenerative disorders. In the present study, we used the murine BV-2 microglial cell line stimulated with gamma-interferon and lipopolysaccharide to gain new insights into the effects of endogenously produced NO on mitochondrial respiratory capacity, iron regulatory pro...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2002.00864.x
更新日期：2002-05-01 00:00:00
abstract：:Several mechanisms have been implicated in pathological neuronal death including zinc neurotoxicity, calcium excitotoxicity and oxidative injury. Glutathione (GSH) serves to provide reducing equivalents for the maintenance of oxidant homeostasis, and also plays roles in intracellular and intercellular signaling in the...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.01691.x
更新日期：2003-04-01 00:00:00
abstract：:Japanese encephalitis virus (JEV), a single-stranded RNA (ssRNA) virus, is the leading cause of encephalitis in Asia. Microglial activation is one of the key events in JEV-induced neuroinflammation. Although the various microRNAs (miRNAs) has been shown to regulate microglia activation during pathological conditions i...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.12609
更新日期：2014-04-01 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：:This study demonstrates that in mammalian and nonmammalian species it is possible to deplete selectively and reversibly retinal glycinergic neurons of their content of glycine by exposure to sarcosine, a competitive inhibitor of glycine transporter 1 (glyt-1). This observation was used as a tool to test the hypothesis...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1998.70062628.x
更新日期：1998-06-01 00:00:00
abstract：:The somatodendritic release of dopamine in substantia nigra previously has been suggested to be nonvesicular in nature and thus to differ from the classical, exocytotic release of dopamine described for the dopaminergic nerve terminal in striatum. We have compared the effects of reserpine, a compound that disrupts ves...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.65010192.x
更新日期：1995-07-01 00:00:00
abstract：:Extralysosomal proteolysis by multicatalytic complexes such as the 26S proteasome produces large amounts of peptides in the cytosol, mitochondria and nuclei of eukaryotic cells, and there is increasing evidence that the resulting free intracellular peptides can modulate specific protein interactions. The demonstration...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.2004.02757.x
更新日期：2004-11-01 00:00:00
