Abstract：
:The biotransformation of the opioid peptide dynorphin A(1-17) was investigated in striatum of freely moving Fischer rats, by direct infusion of this peptide, followed by recovery of the resulting biotransformation products via microdialysis and identification using matrix-assisted laser desorption/ionization mass spectrometry. The observed peptides are consistent with enzymatic cleavage at the Arg7-Ile8 position of dynorphin A(1-17), followed by terminal degradation of the resulting dynorphin A(1-7) and dynorphin A(8-17) peptides. Unexpectedly, novel post-translational modifications were found on C-terminal fragments of dynorphin A(1-17). Using tandem mass spectrometry, a covalent modification of mass 172 Da, the nature of which is not understood, was found on the tryptophan residue of C-terminal fragments (Trp14). Additional modifications, of mass 42 and 113 Da, were also found on the N-terminus (Ile8 or Pro10) of these same C-terminal fragments. The role of these modifications of C-terminal fragments has not yet been characterized.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Reed B,Zhang Y,Chait BT,Kreek MJdoi
10.1046/j.1471-4159.2003.01859.xkeywords:
subject
Has Abstractpub_date
2003-08-01 00:00:00pages
815-23issue
4eissn
0022-3042issn
1471-4159pii
1859journal_volume
86pub_type
杂志文章abstract：:Sequence variation was found in cDNA coding for the extracellular domain of the rat gamma-aminobutyric acid type A (GABAA) receptor alpha 6 subunit. About 20% of polymerase chain reaction (PCR)-amplified alpha 6 cDNA prepared from rat cerebellar mRNA lacked nucleotides 226-255 as estimated by counting single-stranded ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1994.63031167.x
更新日期：1994-09-01 00:00:00
abstract：:In spite of biochemical and autoradiographic evidence for glucocorticoid binding sites in the spinal cord (SC), events occurring after the preliminary step of hormone binding were not studied. In this investigation, we have examined the transformation (activation) of the cytosolic receptor coupled to [3H]dexamethasone...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1985.tb10525.x
更新日期：1985-12-01 00:00:00
abstract：:Aggregation of conformation-abnormal peptides probably plays a key role in the pathogenesis of many neurodegenerative diseases. DSCR1 Down syndrome (DS) critical region 1, was identified from a chromosomal region (21q22.1-q22.2) for the clinical manifestations of DS when an extra-copy is present. We report that expres...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.02294.x
更新日期：2004-03-01 00:00:00
abstract：:Sphingosine-1-phosphate (S1P) is a potent biomediator that can act as either an intracellular or an intercellular messenger. In the nervous system it exerts a wide range of actions, and specific membrane receptors for it have been identified in various regions. However, the physiological origin of extracellular S1P in...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2004.02955.x
更新日期：2005-03-01 00:00:00
abstract：:Injury-induced cytokines act through gp130 in sympathetic neurons to suppress expression of tyrosine hydroxylase (TH) and other genes associated with noradrenergic transmission. These cytokines also trigger the local loss of TH in peri-infarct sympathetic axons after myocardial infarction, but altered gene expression ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2011.07539.x
更新日期：2012-01-01 00:00:00
abstract：:Cerebral cortex tissue was obtained at autopsy from neonatal Poll Hereford calves with clinically confirmed maple syrup urine disease (MSUD), neonatal Holstein-Friesian calves with clinically confirmed citrullinemia, and matched controls. From this, synaptosomes were prepared for studies of neurotransmitter amino acid...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb09409.x
更新日期：1992-08-01 00:00:00
abstract：:Our previous studies have implicated perlecan, a specific heparan sulfate proteoglycan, in the pathogenesis of fibrillar beta-amyloid protein (A beta) accumulation and persistence in Alzheimer's disease (AD) brain. In the present investigation, we determined if perlecan mRNA was present in rodent and human brain tissu...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67031132.x
更新日期：1996-09-01 00:00:00
abstract：:Both acidosis and oxidative stress contribute to ischemic brain injury. The present study examines interactions between acidosis and oxidative stress in murine cortical cultures. Acidosis (pH 6.2) was found to potentiate markedly neuronal death induced by H2O2 exposure. To determine if this effect was mediated by decr...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.0731549.x
更新日期：1999-10-01 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：:Transforming growth factor-beta1 (TGF-beta1) has central functions in development, tissue maintenance, and repair and has been implicated in major diseases. We discovered that TGF-beta1 contains several amphipathic helices and hydrophobic domains similar to apolipoprotein E (apoE), a protein involved in lipoprotein me...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2009.06222.x
更新日期：2009-08-01 00:00:00
abstract：:Both hypercortisolemia and hippocampal damage are features found in patients diagnosed of Alzheimer's disease (AD) and epidemiological evidence supports a role for stress as a risk factor for AD. It is known that immobilization stress is followed by accumulation of oxidative/nitrosative mediators in brain after the re...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2010.07083.x
更新日期：2011-01-01 00:00:00
abstract：:The synaptosomal metabolism of glutamine was studied under in vitro conditions that simulate depolarization in vivo. With [2-15N]glutamine as precursor, the [glutamine]i was diminished in the presence of veratridine or 50 mM KCl, but the total amounts of [15N]glutamate and [15N]aspartate formed were either equal to th...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb04911.x
更新日期：1990-06-01 00:00:00
abstract：:The content, synthesis and transport of D-aspartate (D-Asp) in the CNS of Aplysia californica is investigated using capillary electrophoresis (CE) with both laser-induced fluorescence and radionuclide detection. Millimolar concentrations of D-Asp are found in various regions of the CNS. In the cerebral ganglion, three...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.03791.x
更新日期：2006-04-01 00:00:00
abstract：:The metabolism of 6,7-dihydroxy (catecholic)-1,2,3,4-tetrahydroisoquinolines (TIQs) is of interest because the heterocyclic substances may form in mammals normally or during certain disease via condensations of catecholamines (CAs) with aldehydes or alpha-keto acids. With a specific capillary gas chromatography proced...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1983.tb00866.x
更新日期：1983-12-01 00:00:00
abstract：:The adenylate cyclase activity of rat hippocampal plasma membranes can be stimulated by vasoactive intestinal polypeptide (VIP). Low concentrations (10(-9) to 19(-7) M) of 5'-guanylyl-imido diphosphate (GppNHp) evoke a transient inhibition of the enzyme, which is followed by stimulation with increasing GppNHp concentr...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1983.tb04818.x
更新日期：1983-09-01 00:00:00
abstract：:Some data on the concentration range of response and the concentration for half-response (EC50) of gamma-aminobutyric acid (GABA) for the GABAA receptor are reviewed and compared. An analysis of the 36Cl- flux assay demonstrates that both the EC50 and the slope of a Hill plot depend on the ion influx or efflux assay t...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.1990.tb03110.x
更新日期：1990-10-01 00:00:00
abstract：:Neuroimage analysis in alcoholic corpus callosum (CC) suggests that microstructural abnormalities are higher in the genu followed by the body and the splenium. Molecular mechanisms underlying these dysmorphologys are still unclear. Protein expression was performed using the CC body samples [(nine controls, seven uncom...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2009.06141.x
更新日期：2009-07-01 00:00:00
abstract：:Glial cells are currently viewed as active partners of neurons in synapse formation. The close proximity of astrocytes to the synaptic cleft suggests that these cells might be potential targets for neuronal-released molecules although this issue has been less addressed. Here, we evaluated the role of the excitatory ne...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2008.05428.x
更新日期：2008-07-01 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：:The RNA integrity number (RIN) is often considered to be a critical measure of the quality of postmortem human brains. However, it has been suggested that RINs do not necessarily reflect the availability of intact mRNA. Using the Agilent bioanalyzer and qRT-PCR, we explored whether RINs provide a meaningful way of ass...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.13637
更新日期：2016-07-01 00:00:00
abstract：:In vertebrates and some invertebrates, odorant molecules bind to G protein-coupled receptors on olfactory receptor neurons (ORNs) to initiate signal transduction. Phosphoinositide 3-kinase (PI3K) activity has been implicated physiologically in olfactory signal transduction, suggesting a potential role for a G protein-...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2010.06597.x
更新日期：2010-04-01 00:00:00
abstract：:A decline in the calcium-dependent release of neurotransmitters appears to underlie the decreased neuronal function that accompanies reduced oxygen tensions (hypoxia). To determine if alterations in calcium uptake are primary to these changes, synaptosomal calcium uptake was measured in the presence of 100%, 2.5%, or ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1984.tb09725.x
更新日期：1984-01-01 00:00:00
abstract：:Methamphetamine causes persistent damage to dopamine nerve endings of the striatum. Repeated, intermittent treatment of mice with low doses of methamphetamine leads to the development of tolerance to its neurotoxic effects. The mechanisms underlying tolerance are not understood but clearly involve more than alteration...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2004.02906.x
更新日期：2005-02-01 00:00:00
abstract：:In vitro, the transport into and release of [3H]deoxycytidine from the isolated choroid plexus, the anatomical locus of the blood-cerebrospinal fluid barrier, were studied separately. By use of the ability of nitrobenzylthioinosine (NBTI) to inhibit deoxycytidine efflux from choroid plexus, the transport of 1 microM [...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1983.tb13593.x
更新日期：1983-05-01 00:00:00
abstract：:After intraperitoneal injection of rats with 6-fluorotryptophan (6-FT), brain 5-hydroxytryptamine (5-HT) levels decreased exponentially over 1 h. Depletion was dose-dependent and maximum depletion was observed at 200 mg/kg. 6-FT (200 mg/kg) did not significantly alter the content of 5-hydroxyindoleacetic acid. Turnove...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb05704.x
更新日期：1987-05-01 00:00:00
abstract：:Deacetylation of melatonin to 5-methoxytryptamine (5-MT) in vitro and in vivo was investigated in rat liver and brain tissue, using a gas chromatographic--mass spectrometric 5-MT assay method. In vitro incubation of liver but not brain (hypothalamic, Mesencephalic) slices with melatonin led to a concentration-dependen...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1981.tb10827.x
更新日期：1981-06-01 00:00:00
abstract：:Exposure of neurones in culture to excitotoxic levels of glutamate results in an initial transient spike in [Ca2+]i followed by a delayed, irreversible [Ca2+]i rise governed by rapid kinetics, with Ca2+ originating from the extracellular medium. The molecular mechanism responsible for the secondary Ca2+ rise is unknow...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2004.02732.x
更新日期：2004-10-01 00:00:00
abstract：:The FE65 adaptor protein family was identified in two-hybrid screens as proteins that bind the cytoplasmic domain of the amyloid precursor protein (APP). Studies have shown that FE65 binding to APP modulates APP processing. Increased levels of alpha-secretase derived secreted APP (APPsalpha) and beta-amyloid (Abeta) w...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2002.01009.x
更新日期：2002-08-01 00:00:00
abstract：:The C57BL/Ola (Ola) mouse is a mutant substrain in which transected axons undergo very slow Wallerian degeneration. Because axonal degradation during Wallerian degeneration is calcium dependent, we tested whether Ola axons are susceptible to calcium-mediated axonal degeneration by comparing neurofilament degradation b...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1994.62062472.x
更新日期：1994-06-01 00:00:00
abstract：:To better understand metabotropic/ionotropic integration in neurons we have examined the regulation of M1 muscarinic acetylcholine (mACh) receptor signalling in mature (> 14 days in vitro), synaptically-active hippocampal neurons in culture. Using a protocol where neurons are exposed to an EC(50) concentration of the ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04931.x
更新日期：2007-12-01 00:00:00
