Ca2+ channel blockers attenuate beta-amyloid peptide toxicity to cortical neurons in culture.

abstract：:Previously, we reported a modest but significant reduction in the concentration of neuropeptide Y in frontal cortices from victims of suicide relative to age-matched natural or accidental death control subjects. The reduction in neuropeptide Y appeared to be greatest in a subgroup of victims of suicide for which there...

journal_title：Journal of neurochemistry

authors： Ordway GA,Stockmeier CA,Meltzer HY,Overholser JC,Jaconetta S,Widdowson PS

更新日期：1995-10-01 00:00:00

abstract：:An aminopeptidase with specificity directed toward peptides with acidic N-terminal amino acid residues has been isolated from mouse brain cytosol. Purification by ion-exchange chromatography and gel filtration resulted in an enzyme that hydrolyzed aspartyl-phenylalanine methyl ester at a rate of 13.2 mumols/min/mg pro...

journal_title：Journal of neurochemistry

authors： Kelly JA,Neidle EL,Neidle A

更新日期：1983-06-01 00:00:00

abstract：:The kinetics of dissociation of [3H]methyl beta-carboline-3-carboxylate (beta-CCM) binding was studied in a synaptosomal membrane preparation of rat cerebral cortex. Dissociation was biphasic: a faster phase (10-30% contribution) was followed by a slower phase. Picrotoxin pretreatment at 22 degrees C enhanced the equi...

journal_title：Journal of neurochemistry

authors： Maksay G,Simonyi M

更新日期：1988-06-01 00:00:00

abstract：:Nuclei from the cerebral cortices of animals of different ages were separated into neuronal and neuroglial populations. Nuclei from cerebellar neurons were also studied. Using the enzyme micrococcal nuclease as a probe for chromatin structure, we found that the DNA from both neuronal preparations showed a decreased su...

journal_title：Journal of neurochemistry

authors： Berkowitz EM,Sanborn AC,Vaughan DW

更新日期：1983-08-01 00:00:00

abstract：:Using a whole-cell binding procedure with long incubations at low temperature and subsequent acid stripping, we have characterized an atypical endothelin (ET) receptor in primary rat cortical astrocyte cultures. We found the following: (a) no competition for 125I-ET-1 binding by the ET(A) antagonists BQ-123 and LU 135...

journal_title：Journal of neurochemistry

authors： Jensen N,Hasselblatt M,Sirén AL,Schilling L,Schmidt M,Ehrenreich H

更新日期：1998-02-01 00:00:00

abstract：:The neuronal nitric oxide (NO) synthase generates NO from arginine. NO mediates its physiological effects mainly by stimulating the synthesis of cyclic GMP. We have investigated the role of the arginine availability on the NMDA-induced cyclic GMP accumulation in immature rat brain slices. The effect of NMDA was blocke...

journal_title：Journal of neurochemistry

authors： Grima G,Cuénod M,Pfeiffer S,Mayer B,Do KQ

更新日期：1998-11-01 00:00:00

abstract：:Phosphodiesterase (PDE) 7B, a cAMP-specific PDE which is dominantly expressed in striatum, is expected to be involved in dopaminergic signaling in striatal neurons. Here we show, for the first time, the involvement of the dopaminergic signaling pathway in transcriptional activation of rat PDE7B in primary striatal cul...

journal_title：Journal of neurochemistry

authors： Sasaki T,Kotera J,Omori K

更新日期：2004-04-01 00:00:00

abstract：:Abstract Dorfin is a RING-finger type ubiquitin ligase for mutant superoxide dismutase 1 (SOD1) that enhances its degradation. Mutant SOD1s cause familial amyotrophic lateral sclerosis (FALS) through the gain of unelucidated toxic properties. We previously showed that the accumulation of mutant SOD1 in the mitochondri...

journal_title：Journal of neurochemistry

authors： Takeuchi H,Niwa J,Hishikawa N,Ishigaki S,Tanaka F,Doyu M,Sobue G

更新日期：2004-04-01 00:00:00

abstract：:Several cholinesterase inhibitors used in the treatment of Alzheimer's disease (AD) have been shown to interact with an allosteric site on the nicotinic acetylcholine receptor (nAChR). A possible linkage between the phosphorylation state of tau, the major component of paired helical filaments found in AD brain, and st...

journal_title：Journal of neurochemistry

authors： Hellström-Lindahl E,Moore H,Nordberg A

更新日期：2000-02-01 00:00:00

abstract：:p-glycoprotein (p-gp) is an ATP-binding cassette transporter and its overexpression is responsible for the acquisition of the multidrug resistance phenotype in human tumors. p-gp is localized at the blood-brain barrier and is involved in brain cytoprotection. Our previous work used immunoprecipitation to show that cav...

journal_title：Journal of neurochemistry

authors： Barakat S,Demeule M,Pilorget A,Régina A,Gingras D,Baggetto LG,Béliveau R

更新日期：2007-04-01 00:00:00

abstract：:Human immunodeficiency virus (HIV)-1-associated neurocognitive disorders (HAND) associated with infection and activation of mononuclear phagocytes (MP) in the brain, occur late in disease. Infected/activated MP initiate neuroinflammation activating glial cells and ultimately disrupting neuronal function. Astrocytes se...

journal_title：Journal of neurochemistry

authors： Fields J,Gardner-Mercer J,Borgmann K,Clark I,Ghorpade A

更新日期：2011-07-01 00:00:00

abstract：:Reactive oxygen species (ROS) have been suggested to act as cellular messengers that mediate signal transduction cascades in various cell types. However, little is known about their role in this capacity in the nervous system. We have begun to investigate the role of ROS, and that of nitric oxide (NO), in mediating mi...

journal_title：Journal of neurochemistry

authors： Kanterewicz BI,Knapp LT,Klann E

更新日期：1998-03-01 00:00:00

abstract：:Changes in the activity of Na+,K+-ATPase and in the water, Na+, and K+ levels in the parietal cortex, hippocampus, and thalamus were investigated in rats 1, 3, 6, and 24 h following systemic kainic acid injection. An increase in Na+,K+-ATPase activity was observed in all three regions 3 h after the treatment, with a s...

journal_title：Journal of neurochemistry

authors： Sztriha L,Joó F,Dux L,Böti Z

更新日期：1987-07-01 00:00:00

abstract：:Reactive oxygen and nitrogen species have emerged as predominant effectors of neurodegeneration. We demonstrated that expression of the fully active G93A Cu,Zn superoxide dismutase mutant in neuroblastoma cells is associated with an increased level of oxidatively modified proteins, in terms of carbonylated residues. A...

journal_title：Journal of neurochemistry

authors： Aquilano K,Rotilio G,Ciriolo MR

更新日期：2003-06-01 00:00:00

abstract：:Both vasoactive intestinal peptide (VIP) and glucagon rapidly elevated cyclic AMP levels in embryonic chick retinal pigment epithelium (RPE), in culture as well as in freshly dissected tissue. In cultured cells, the half-maximal activities of VIP and glucagon were 5 X 10(-8) M and 3 X 10(-8) M, respectively. After 3 m...

journal_title：Journal of neurochemistry

authors： Koh SW,Chader GJ

更新日期：1984-12-01 00:00:00

abstract：:Glutamate in the prefrontal cortex (PFC) plays a significant role in several mental illnesses, including schizophrenia, addiction and anxiety. Previous studies on PFC glutamate-mediated function have used techniques that raise questions on the neuronal versus astrocytic origin of glutamate. The present studies used en...

journal_title：Journal of neurochemistry

authors： Hascup ER,Hascup KN,Stephens M,Pomerleau F,Huettl P,Gratton A,Gerhardt GA

更新日期：2010-12-01 00:00:00

abstract：:Nerve growth factor (NGF) is a trophic and survival factor for cholinergic neurons, and it induces the expression of several genes that are essential for synthesis and storage of acetylcholine (ACh), specifically choline acetyltransferase, vesicular ACh transporter (VAChT), and choline transporter. We have found previ...

journal_title：Journal of neurochemistry

authors： Madziar B,Shah S,Brock M,Burke R,Lopez-Coviella I,Nickel AC,Cakal EB,Blusztajn JK,Berse B

更新日期：2008-12-01 00:00:00

abstract：:Post-ischemic inflammation is an essential step in the progression of ischemic stroke. This review focuses on the function of infiltrating immune cells, macrophages, and T cells, in ischemic brain injury. The brain is a sterile organ; however, the activation of Toll-like receptor (TLR) 2 and TLR4 is pivotal in the beg...

journal_title：Journal of neurochemistry

authors： Shichita T,Ago T,Kamouchi M,Kitazono T,Yoshimura A,Ooboshi H

更新日期：2012-11-01 00:00:00

abstract：:Abnormalities in the kynurenine pathway may play a role in Huntington's disease (HD). In this study, tryptophan depletion and loading were used to investigate changes in blood kynurenine pathway metabolites, as well as markers of inflammation and oxidative stress in HD patients and healthy controls. Results showed tha...

journal_title：Journal of neurochemistry

authors： Stoy N,Mackay GM,Forrest CM,Christofides J,Egerton M,Stone TW,Darlington LG

更新日期：2005-05-01 00:00:00

abstract：:To further analyze the action of copper on brain synaptic mechanisms, the brain dipeptide carnosine (beta-alanyl-L-histidine) was tested in Xenopus laevis oocytes expressing the rat P2X4 or P2X7 receptors. Ten micromolar copper halved the currents evoked by ATP in both receptors; co-application of carnosine plus coppe...

journal_title：Journal of neurochemistry

authors： Coddou C,Villalobos C,González J,Acuña-Castillo C,Loeb B,Huidobro-Toro JP

更新日期：2002-02-01 00:00:00

abstract：:The total pellet from pig forebrain (from which the cytosolic sialidase was completely washed out) was treated with phosphatidylinositol phospholipase C (PIPLC) and centrifuged at high speed. The supernatant contained sialidase and 5'-nucleotidase activities. The greatest liberation of sialidase was obtained after inc...

journal_title：Journal of neurochemistry

authors： Chiarini A,Fiorilli A,Siniscalco C,Tettamanti G,Venerando B

更新日期：1990-11-01 00:00:00

abstract：:Although myelin oligodendrocyte glycoprotein is a candidate autoantigen in multiple sclerosis, its function remains unknown. In humans, mRNA expressed by the myelin oligodendrocyte glycoprotein gene is alternatively spliced resulting in at least nine unique protein isoforms. In this study, we investigated the sub-cell...

journal_title：Journal of neurochemistry

authors： Boyle LH,Traherne JA,Plotnek G,Ward R,Trowsdale J

更新日期：2007-09-01 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

authors： Wang XH,Zhu WJ,Corsi L,Ikonomovic S,Paljug WR,Vicini S,Grayson DR

更新日期：1998-08-01 00:00:00

abstract：:Astrocytes have important roles in control of extracellular environment, de novo synthesis of neurotransmitters, and regulation of neurotransmission and blood flow. All of these functions require energy, suggesting that astrocytic metabolism should rise and fall with changes in neuronal activity and that brain imaging...

journal_title：Journal of neurochemistry

authors： Dienel GA,Schmidt KC,Cruz NF

更新日期：2007-11-01 00:00:00

abstract：:NMDA (N-methyl-D-aspartate) subtype of glutamate receptors are core components of dendritic spine postsynaptic densities (PSDs), in which they are anchored via their carboxy-terminal tails to cytoskeletal proteins. In this study, we examined the role of the neuronal intermediate filament protein, neurofilament-light (...

journal_title：Journal of neurochemistry

authors： Ratnam J,Teichberg VI

更新日期：2005-02-01 00:00:00

abstract：:Aquaporin-4, a predominant water channel in the brain, is specifically expressed in astrocyte endfeet and plays a central role in water homeostasis, neuronal activity, and cell migration in the brain. It has two dominant isoforms called M1 and M23, whose mRNA is driven by distinct promoters located upstream of exons 0...

journal_title：Journal of neurochemistry

authors： Abe Y,Ikeshima-Kataoka H,Goda W,Niikura T,Yasui M

更新日期：2012-03-01 00:00:00

abstract：:Major membrane lipids were quantified in frontal (Brodmann area 9) and temporal (Brodmann areas 21 and 22) cortices, caudate nucleus, hippocampus, and frontal white matter of 12 cases with Alzheimer's disease (AD) type I (early onset), 21 cases with AD type II (late onset), and 20 age-matched controls. The concentrati...

journal_title：Journal of neurochemistry

authors： Svennerholm L,Gottfries CG

更新日期：1994-03-01 00:00:00

abstract：:The effect of N-methyl-D-aspartate (NMDA) receptor antagonists on cell viability was studied in rat primary cortical cells. NMDA antagonists [MK-801 and 2-amino-5-phosphonovalerate (APV)] induced cell shrinkage, nuclear condensation or fragmentation, and internucleosomal DNA fragmentation. Treatment of cells with MK-8...

journal_title：Journal of neurochemistry

authors： Takadera T,Matsuda I,Ohyashiki T

更新日期：1999-08-01 00:00:00

abstract：:The ubiquitous polyamines spermidine and spermine are known as modulators of glutamate receptors and inwardly rectifying potassium channels. They are synthesized by a set of specific enzymes in which spermidine synthase is the rate-limiting step catalysing the formation of the spermine precursor spermidine from putres...

journal_title：Journal of neurochemistry

authors： Krauss M,Langnaese K,Richter K,Brunk I,Wieske M,Ahnert-Hilger G,Veh RW,Laube G

更新日期：2006-04-01 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

authors： Ma H,Xiong H,Liu T,Zhang L,Godzik A,Zhang Z

更新日期：2004-03-01 00:00:00