Abstract：
:The binding kinetics of the specific dopamine D2 antagonist [3H]raclopride to dopamine D2 receptors in rat neostriatum were studied. The pseudo-first-order rate constants of [3H]raclopride binding with these membranes revealed a hyperbolic dependence upon the antagonist concentration, indicating that the reaction had at least two consecutive and kinetically distinguishable steps. The first step was fast binding equilibrium, characterized by the dissociation constant KA = 12 +/- 3 nM. The following step corresponded to a slow isomerization of the receptor-antagonist complex, characterized by the isomerization equilibrium constant Ki = 0.11. The dissociation constant Kd = 1.3 nM, calculated from these kinetic data, was similar to Kd = 2.4 nM, determined from equilibrium binding isotherm for the radioligand. Implications of the complex reaction mechanism on dopamine D2 receptor assay by [3H]raclopride were discussed.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Lepiku M,Rinken A,Järv J,Fuxe Kdoi
10.1016/0197-0186(95)00123-9subject
Has Abstractpub_date
1996-05-01 00:00:00pages
591-5issue
5-6eissn
0197-0186issn
1872-9754journal_volume
28pub_type
杂志文章abstract：:Much attention has been paid to the connection between periodontitis and Alzheimer's disease (AD). We previously showed that infection of P. gingivalis, one of major periodontal pathogen causing periodontitis, induced migration and inflammatory responses in murine microglia through gingipain-induced activation of prot...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2020.104840
更新日期：2020-11-01 00:00:00
abstract：:AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) excitotoxicity was examined in cultured neocortical neurons using the reduction of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) to measure cell viability. Neurons were exposed to AMPA at different culture periods during development o...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(97)00130-7
更新日期：1998-05-01 00:00:00
abstract：:There were specific changes in the contents of cytoskeletal components and their organization during glioblast differentiation induced by glia maturation factor (GMF). Vimentin and glial fibrillary acidic protein increased in their contents, whereas actin did not. Tubulin was only a minor component of the glial cytosk...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(86)90067-7
更新日期：1986-01-01 00:00:00
abstract：:The Alzheimer's disease amyloid protein precursor (APP) gene is part of a multi-gene super-family from which sixteen homologous amyloid precursor-like proteins (APLP) and APP species homologues have been isolated and characterised. Comparison of exon structure (including the uncharacterised APL-1 gene), construction o...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/s0197-0186(99)00125-4
更新日期：2000-03-01 00:00:00
abstract：:The Mg(2+)-ATPase associated with highly purified cholinergic synaptic vesicles isolated from the Torpedo electric organ can be activated by millimolar concentrations of Ca(2+) only to a maximum of 46%. ATP is hydrolyzed in preference to other tri-nucleotides on Mg(2+)-activation but not on Ca(2+)-activation of the en...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(87)90156-2
更新日期：1987-01-01 00:00:00
abstract：:Nitrite therapy is more effective in cerebral ischemia when administered earlier. It would be beneficial during the hyperacute stages of stroke if the nitrite effect is demonstrated in intracerebral hemorrhage (ICH). When nitrite is injected intravenously 3h after ICH induction in rats, most doses of nitrite provided ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2011.05.018
更新日期：2011-08-01 00:00:00
abstract：:The worldwide prevalence of stroke continues to rise despite recent successes in treating acute ischemic stroke. With limited patient eligibility and associated risk of tPA and mechanical thrombectomy, new preventive and therapeutic modalities are needed to stave the rising wave of stroke. Inflammation plays a key rol...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2016.10.007
更新日期：2017-07-01 00:00:00
abstract：:Age, sex, and gonadal hormones have profound effects on ischemic stroke outcomes, although how these factors impact basic stroke pathophysiology remains unclear. There is a plethora of inconsistent data reported throughout the literature, primarily due to differences in the species examined, the timing and methods use...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2012.10.003
更新日期：2012-12-01 00:00:00
abstract：:Phosphine-borane complexes are novel cell-permeable drugs that protect neurons from axonal injury in vitro and in vivo. These drugs activate the extracellular signal-regulated kinases 1/2 (ERK1/2) cell survival pathway and are therefore neuroprotective, but do not scavenge superoxide. In order to understand the intera...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2016.05.014
更新日期：2016-10-01 00:00:00
abstract：:Neurones are dependent on their mitochondria to produce the necessary amounts of ATP for survival. Retinal ganglion cells (RGCs) have a particularly large number of mitochondria which-unlike neurones in the brain-are exposed to visual light of 400-850 nm. Here we demonstrate that short wavelength visual blue light neg...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2019.02.018
更新日期：2019-05-01 00:00:00
abstract：:Astroglial cells have a variety of roles in the central nervous system (CNS), providing a homeostasis for the proper functioning of neuronal cells. The classical view concerning the supportive role of astroglia towards associated neurons has to be extended. A great number of new evidences suggest that astrocytes inter...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2009.01.025
更新日期：2009-07-01 00:00:00
abstract：:Even though the inducing effect of electromagnetic fields (EMF) on the neural differentiation of human bone marrow mesenchymal stem cells (hBM-MSCs) is a distinctive, the underlying mechanism of differentiation remains unclear. To find out the signaling pathways involved in the neural differentiation of BM-MSCs by EMF...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2013.02.002
更新日期：2013-03-01 00:00:00
abstract：:Long-term (12 h) incubation of NCB-20 neuroblastoma x Chinese hamster brain cell hybrid cells with phorbol dibutylate caused a decrease in the enzyme activity of protein kinase C (PKC). Under these conditions, the formation of inositol 1,4,5-trisphosphate [Ins(1,4,5)P(3)] and the mobilization of intracellular Ca(2+) t...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(91)90175-d
更新日期：1991-01-01 00:00:00
abstract：:The effects of ageing on the turnover of dopamine, noradrenaline and serotonin in the lateral geniculate nucleus and the visual cortex were evaluated, using high performance liquid chromatography (HPLC) with electrochemical detection. Compared to adult animals, aged rats showed more changes in the visual cortex than i...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(93)90027-3
更新日期：1993-06-01 00:00:00
abstract：:Outer (OHC) and inner (IHC) hair cells in the organ of Corti of the mammalian cochlea process sound. OHC and their efferent synapse are part of a feedback system assumed to control and modulate information carried by afferent neurons passing from IHC to the brain. Underlying mechanisms are not well understood. This pa...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/0197-0186(95)00011-v
更新日期：1995-10-01 00:00:00
abstract：:The venom secreted from glands appended to the jaws of Glycera convoluta, a Polychaete Annelid, increases the spontaneous quantal release of transmitter from nerve terminals. The component that is biologically active on vertebrate cholinergic nerve terminals has recently been shown to be a high molecular weight protei...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(85)90009-9
更新日期：1985-01-01 00:00:00
abstract：:G protein-coupled receptors are cell surface receptors that mediate the effects of extracellular signals in the endocrine/paracrine and sensory systems. Experimental evidence is accumulating, which suggest that these receptors form dimers or higher order oligomers. The functional relevance of G protein-coupled recepto...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2007.05.018
更新日期：2007-10-01 00:00:00
abstract：:Neuroblastoma cells, cultivated on plastic dishes, in presence of 15 mM glucose resist very well to hypoxia. Cells incubated on plastic dishes, if left unshaken, showed a Pasteur effect at an oxygen concentration below 10%. Oxygen diffusion was the limiting factor in these plastic dishes since improved oxygen diffusio...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(84)90116-5
更新日期：1984-01-01 00:00:00
abstract：:The acylation of myelin proteolipid protein (PLP) and intermediate protein (IP) was investigated in an in vitro system of tissue slices prepared from actively myelinating rat brainstem. The incorporation of [(3)H]palmitate into the proteins in nine subcellular fractions including myelin and other cellular membranes wh...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(86)90148-8
更新日期：1986-01-01 00:00:00
abstract：:Gap junctions are transcellular pathways that enable a dynamic metabolic coupling and a selective exchange of biological signaling mediators. Throughout the course of the brain development these intercellular channels are assembled into regionally and temporally defined patterns. The present review summarizes the poss...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/s0197-0186(02)00016-5
更新日期：2002-11-01 00:00:00
abstract：:Ras homolog enriched in the brain (Rheb) is a homolog of Ras GTPase that regulates cell growth, proliferation, and cell cycle via mammalian target of rapamycin (mTOR). Recently, it has been confirmed that Rheb activation not only promotes cellular proliferation and differentiation but also enhances cellular apoptosis ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2013.01.025
更新日期：2013-03-01 00:00:00
abstract：:Intoxication with inorganic arsenicals leads to neuropathies and impaired cognitive functions. However, little is known so far on the cellular targets that are involved in the adverse effects of arsenite to brain cells. To test whether arsenite may affect neural glucose and glutathione (GSH) metabolism, primary astroc...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2014.06.013
更新日期：2014-10-01 00:00:00
abstract：:Age-related neurodegenerative diseases are characterized by selective neuron loss, glial activation, inflammation and abnormalities in oxidative metabolism. Thiamine deficiency (TD) is a model of neurodegeneration induced by impairment of oxidative metabolism. TD produces a time-dependent, selective neuronal death in ...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2003.09.008
更新日期：2004-07-01 00:00:00
abstract：INTRODUCTION:Primary pathology underlying Parkinson's disease (PD) is the loss of dopaminergic neurons in the substantia nigra (SN). A variety of genetic and environmental factors underlie this loss of dopaminergic neurons. However, recent studies have highlighted the role of elevated oxidative stress and the pro-infla...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2015.06.004
更新日期：2015-08-01 00:00:00
abstract：:The alternative routes of cleavage of the amyloid precursor protein (APP) result in the generation and secretion of both soluble APP and beta-amyloid, the latter being the main component of the amyloid deposits in the brains of individuals with Alzheimer's disease (AD). This study examined the question of whether acet...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(00)00091-7
更新日期：2001-03-01 00:00:00
abstract：:The effects of thyroid deficiency on the activity of glutamine synthetase (GS) and the number of glial fibrillary acidic (GFA) protein containing cells (the markers for astroglial cells) and on the 2?, 3?-cyclic nucleotide 3?-phosphohydrolase (CNPase) activity (the marker for oligodendroglial cells) were studied in th...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(89)90107-1
更新日期：1989-01-01 00:00:00
abstract：:The aim of the present study was to investigate, whether dopamine D1 and/or D2 receptors are able to interfere with the ATP-induced increase of the intracellular Ca2+ concentration ([Ca2+]i) in cultured striatal neurons identified by their morphological characteristics and their [Ca2+]i transients in response to a hig...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2007.06.013
更新日期：2008-01-01 00:00:00
abstract：:Uridine was administered in the drinking water (0.5 mg/ml) in adult 6 month-old rats for 6 months. The mean daily dose of uridine was 12.5 mg/rat. The effects of this treatment on tyrosine hydroxylase, galanin, somatostatin, neuropeptide Y and cholecystokinin-like immunoreactivities were studied by means of semiquanti...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(88)90081-2
更新日期：1988-01-01 00:00:00
abstract：:The effects of N-methyl-norsalsolinol on basal and inhibited activity of monoamine oxidase (MAO) in membrane preparations from the caudate nucleus of the rat have been studied. For the first time, the physiological step of dopamine oxidation to 3, 4 dihydroxyphenylacetic aldehyde (DPAA) was examined. N-methyl-norsalso...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(95)00048-d
更新日期：1996-01-01 00:00:00
abstract：:The neurotoxic beta-amyloid (Abeta) peptide fragment Abeta(25-35) has been suggested to exert its deleterious effects on cells via production of hydrogen peroxide. In human platelets and in the presence of DMSO to prevent production of hydroxyl radicals from hydrogen peroxide, both Abeta(25-35) and hydrogen peroxide w...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(98)00013-8
更新日期：1998-08-01 00:00:00
