Abstract：
:The insoluble fraction of ox-brain, which had previously been shown to have a non-linear affinity for Na+ and K+, was prepared. Acetylcholine (1 x 10(-8) mol/l and 1 x 10(-7) mol/l) reduced the affinity of the fraction for Na+ and K+ to zero, while at 1 x 10(-6) mol/l, the affinity for the cations was almost as high as in the absence of the transmitter; the affinities for Na+ and K+ were particularly high, when the supernatant concentrations of these ions exceeded 80-100 mM. Addition of eserine (3 x 10(-5) mol/l) considerably modified the response of the fraction to acetylcholine (1 x 10(-5) mol/l). Atropine (1 x 10(-8) mol/l) in the absence or presence of acetylcholine (1 x 10(-5), or 1 x 10(-4) mol/l) reduced the affinity of the fraction for Na+ and K+ to zero. Epinephrine (3 x 10(-10) mol/l) lowered the affinity for Na+ and K+, while ergotamine itself (1 x 10(-5) mol/l) reduced it to zero. The addition of both epinephrine and ergotamine at the latter concentrations restored the affinity of the fractions for Na+ and K+ to what it had been in the absence of the transmitter or antagonist, previously reported. Norepinephrine (3 x 10(-10) mol/l), or ouabain (1 x 10(-7) mol/l) reduced the affinity of the fraction for Na+ and K+ to zero. Thus, the transmitters and antagonists altered the affinity of the insoluble fraction for Na+ and K+ non-linearity, dependent upon their concentrations, the concentrations of the cations, and the interaction of transmitter and antagonist.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Ahmed N,Hillman Hdoi
10.1007/BF00969636subject
Has Abstractpub_date
1989-02-01 00:00:00pages
179-84issue
2eissn
0364-3190issn
1573-6903journal_volume
14pub_type
杂志文章abstract：:The effect of isoproterenol, norepinephrine, dopamine, and serotonin on the accumulation of adenosine 3',5'-monophosphate (cAMP) was studied in homogeneous neuronal cultures from 8-day chick embryo hemispheres. Among the catecholamines, isoproterenol had a more pronounced effect on the accumulation of cAMP. Norepineph...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00966167
更新日期：1980-10-01 00:00:00
abstract：:The effects of graded doses of D-pipecolic acid (0.005-5 micrograms/animals s.c.) on tolerance to the hypothermic effect of ethanol (4 g/kg i.p.) were investigated in mice. D-Pipecolic acid itself did not change the core temperature or the acute hypothermic response to a single dose of ethanol. Repeated D-pipecolic ac...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00967746
更新日期：1986-12-01 00:00:00
abstract：:It is now established that (1) concentrations of 2-phenylethylamine (PEA) are greatly increased in brain following administration of monoamine oxidase inhibitor (MAOI) antidepressants; (2) PEA is a metabolite of the MAOI antidepressant phenelzine; and (3) PEA may be a neuromodulator of catecholamine activity. On the b...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1007/BF00966762
更新日期：1993-09-01 00:00:00
abstract：:The goal of this study was to examine the responsiveness of an immortalized catecholaminergic neuronal line, 2N27, to various growth factors and identify those which promote catecholaminergic expression. 2N27 is a newly established neural cell line derived from fetal rat mesencephalic tissue and, thus, contains tyrosi...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1022482520358
更新日期：1997-03-01 00:00:00
abstract：:Ion fluxes in mammalian myelinated axons are restricted to the nodes of Ranvier, where, in particular, voltage-gated Na+ channels are clustered at a high density. The node of Ranvier is separated from the internode by two distinct domains of the axolemma, the paranode and the juxtaparanode. Each axonal domain is chara...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1021608514646
更新日期：2003-01-01 00:00:00
abstract：:Exposure of guinea pig brain slices to low concentrations (10 microM) of NMDA caused decreases in PCr and ATP within 30 min, with a slower decrease in NAA and increase in lactate, both detectable after 1 h. Exposure to NMDA for over 1 h or at higher concentrations caused further increases in lactate and decreases in N...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1014898421330
更新日期：2002-02-01 00:00:00
abstract：:The labeling of RNA in young and adult rat brain has been studied by measuring in vitro (tissue slices incubation) the incorporation of labeled uridine into RNA of total tissue and of the various subcellular fractions purified from cerebral hemispheres of 1- and 10-month-old rats. Gel electrophoretic analysis of the n...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00965100
更新日期：1983-04-01 00:00:00
abstract：:Recent studies have demonstrated a scrutinized association of diabetes mellitus with depressive symptoms and major depression. Glycogen synthase kinase-3 (GSK-3) is a protein kinase enzyme constitutively active in non-stimulated cells and in multiple signalings. Independent lines of research provide a converging evide...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-015-1670-6
更新日期：2015-09-01 00:00:00
abstract：:Protein kinase C has recently attracted considerable attention because of its importance in the control of cell division, cell differentiation, and signal transduction across the cell membrane. The activity of this enzyme is altered by several lipids such as diacylglycerol, free fatty acids, lipoxins, gangliosides, an...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1007/BF00973288
更新日期：1988-06-01 00:00:00
abstract：:The tumor suppressor PTEN (phosphatase and tensin homolog deleted on chromosome 10) is not only a protein, but also a lipid phosphatase that can negatively regulate the serine/threonine kinase Akt. It has been reported that PTEN can be regulated by means of phosphorylation. However, whether PTEN can be regulated by an...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-009-9938-3
更新日期：2009-08-01 00:00:00
abstract：:Systemic inflammation triggered by lipopolysaccharide (LPS) administration disrupts blood-brain barrier (BBB) homeostasis in animal models. This event leads to increased susceptibility of several encephalic structures to potential neurotoxicants present in the bloodstream. In this study, we investigated the effects of...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-018-2477-z
更新日期：2018-03-01 00:00:00
abstract：:Epileptogenesis, induced by status epilepticus (SE), is a chronic process, and intervention in this progress may prevent chronic epilepsy. It has been proposed that DNA methylation might be related with epileptogenesis. RASgrf1 has a differentially methylated region at the promoter which can silence gene expression. W...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-018-2621-9
更新日期：2018-10-01 00:00:00
abstract：:Previous work from this laboratory and others has shown that neurotransmitters can activate phospholipase D. Unlike the phospholipase C that specifically hydrolyzes inositol-containing phospholipids, phospholipase D in neuronal tissue specifically hydrolyzes phosphatidylcholine. One route for the synthesis of phosphat...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1020716304520
更新日期：1998-08-01 00:00:00
abstract：:The effects of the following drugs: nimodipine (1 mg/kg b.w., i.p.), 2-amino-5-phosphonovaleric acid (4 mg/kg b.w., i.p.) and propentofylline (25 mg/kg b.w., i.p.), administered (alone or in combination) at the end of 15 min bilateral ischemia in gerbils were evaluated on mitochondrial superoxide dismutase (SOD), glut...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00966815
更新日期：1994-02-01 00:00:00
abstract：:Methylphenidate is commonly used for the treatment of attention deficit/hyperactivity disorder. There are still few works regarding the effects of methylphenidate on brain energy metabolism. Thus, in the present study we evaluated the effect of chronic administration of methylphenidate on the activities of mitochondri...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-010-0229-9
更新日期：2010-11-01 00:00:00
abstract：:Taurine is a semiessential amino acid that is not incorporated into proteins. In mammalian tissues, taurine is ubiquitous and is the most abundant free amino acid in the heart, retina, skeletal muscle, and leukocytes. Taurine reaches up to 50 mM concentration in leukocytes. Taurine has been shown to be tissue-protecti...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1023/b:nere.0000010440.37629.17
更新日期：2004-01-01 00:00:00
abstract：:We recently presented evidence that distinct morphine and enkephalin receptors coexist in an opioid receptor complex (Mol. Pharmacol. 21:548-557, 1982). In this paper, we present data which demonstrate that in the presence of sodium leucine enkephalin noncompetitively inhibits the binding of [3H]naloxone to a crude pa...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00964552
更新日期：1983-07-01 00:00:00
abstract：:Protocatechuic acid (PA), a major metabolite of anthocyanins, has been reported to possess antioxidant and anti-inflammatory activities. However, the effects of PA on LPS-induced inflammatory responses in microglia have not been reported. The aim of this study was to investigate the anti-inflammatory effects and molec...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-015-1646-6
更新日期：2015-08-01 00:00:00
abstract：:Lipid synthesis from acetoacetate and 3-hydroxybutyrate was studied in chick embryo from 15 to 21 days and in chick neonate from 1 to 21 days. Embryonic spinal cord showed higher ability than brain to incorporate acetoacetate into total lipids, although a sharp decrease was found at hatching. 3-Hydroxybutyrate incorpo...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00966692
更新日期：1993-10-01 00:00:00
abstract：:Somatostatin contents of striatum, hippocampus, and pons medulla have been followed in two inbred strains of mice (C57B1/6J and Balb/cJ) with aging and long term alcohol exposure (over a 25 month period of intoxication). Marked strain dependent differences in basic levels of somatostatin and genotypic variations in re...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00965332
更新日期：1986-05-01 00:00:00
abstract：:Analysis in mouse brain slices of the uptake of acetyl-L-[N-methyl-14C]carnitine with time showed it to be concentrative, and kinetic analysis gave a Km of 1.92 mM and a Vmax of 1.96 mumol/min per ml, indicating the presence of a low-affinity carrier system. The uptake was energy-requiring and sodium-dependent, being ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00964865
更新日期：1989-05-01 00:00:00
abstract：:The pathophysiology of cerebral oedema (CE) in diabetic ketoacidosis (DKA) remains enigmatic. We investigated the role of the idiogenic osmol taurine and aquaporin channels in an in vitro model, the SH-SY5Y neuroblastoma cell line, by sequentially mimicking DKA-like hyperglycemia/hypertonicity and hypotonic fluid ther...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-011-0598-8
更新日期：2012-01-01 00:00:00
abstract：:Alzheimer's disease (AD) is the most common form of dementia that progressively disrupts neurocognitive function, which has neither cure nor effective treatment. Hypercholesterolemia might be involved in brain alterations that could evolve into AD. The present study aims to evaluate the potential of omega-3, Co-enzyme...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-020-02996-2
更新日期：2020-05-01 00:00:00
abstract：:During the past decade a new approach to pathogenetic studies of hepatic encephalopathy has been undertaken to identify the neurochemical alterations which characterize the syndrome. Using animal models of hepatic encephalopathy electrophysiological, behavioral, pharmacological and biochemical evidence were provided o...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1007/BF00972205
更新日期：1990-02-01 00:00:00
abstract：:Neuroglycan C (NGC) is a transmembrane-type chondroitin sulfate proteoglycan that promotes neurite outgrowth. To identify the ligand of NGC, we applied a detergent-solubilized membrane fraction of fetal rat brains to an NGC-immobilized affinity column. Several proteins were eluted from the column including an 18 kDa-b...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-010-0164-9
更新日期：2010-08-01 00:00:00
abstract：:During evolution, living organisms develop a specialized apparatus called nociceptors to sense their environment and avoid hazardous situations. Intense stimulation of high threshold C- and Adelta-fibers of nociceptive primary sensory neurons will elicit pain, which is acute and protective under normal conditions. A f...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1007/s11064-008-9711-z
更新日期：2008-10-01 00:00:00
abstract：:The primary objective of this investigation was to assess the neuroprotective efficacy of spice active principles namely Eugenol (Eug) and isoeugenol (IE) in an acrylamide (ACR) neuropathy model in rats. In the present study, ACR administration (50 mg/kg bw, i.p. 3 times/week) for 5 weeks to growing rats caused typica...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-012-0924-9
更新日期：2013-02-01 00:00:00
abstract：:The release of the inhibitory neurotransmitter GABA is generally enhanced under potentially cell-damaging conditions. The properties and regulation of preloaded [3H]GABA release from mouse hippocampal slices were now studied in free radical-containing medium in a superfusion system. Free radical production was induced...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-007-9439-1
更新日期：2008-03-01 00:00:00
abstract：:Dual-specificity tyrosine-regulated kinase 2 (DYRK2), a protein kinase that phosphorylates its substrates on serine/threonine, is expressed in numerous human tumors, but little is known about its role in the pathophysiology of glioma. In this study, we made an effort to explore the expression and function in human gli...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-017-2345-2
更新日期：2017-11-01 00:00:00
abstract：:In the present study, we evaluated the expression of some proliferation and differentiation markers in 15 DIV astrocyte cultures pretreated or not with 0.5 mM glutamate for 24 h and than maintained under chronic or acute treatment with 50 μM R(+)enantiomer or raceme alpha-lipoic acid (ALA). GFAP expression significant...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-010-0256-6
更新日期：2010-12-01 00:00:00
