Abstract:
:Rat corticoencephalic cell cultures were investigated by high performance liquid chromatography for changes in the levels of adenosine 5'-triphosphate (ATP), guanosine 5'-triphosphate (GTP), uridine 5'-triphosphate (UTP), cytidine 5'-triphosphate (CTP), and the respective nucleoside diphosphates. Hypoxia was induced by gassing the incubation medium for 30 min with 100% argon. Removal of glucose was caused by washing the cultures in glucose-free medium at the beginning of the 30 min incubation period. Whereas hypoxia or glucose-deficiency alone failed to alter the nucleotide levels, the combination of these two manipulations was clearly inhibitory. Diazoxide (300 microM) an opener of ATP-dependent potassium channels (K(ATP)) did not alter the nucleotide contents either in a normoxic and glucose-containing medium, or a hypoxic and glucose-free medium. By contrast, the K(ATP) channel antagonist tolbutamide (300 microM) aggravated the hypoxic decrease of nucleotide levels in a glucose-free medium, although it was ineffective in a normoxic and glucose-containing medium. Hypoxia and glucose-deficiency decreased the ATP/ADP and UTP/UDP ratios, but failed to change the GTP/GDP ratio. Diazoxide and tolbutamide (300 microM each) had no effect on the nucleoside triphosphate/diphosphate ratios either during normoxic or during hypoxic conditions. In conclusion, corticoencephalic cultures are rather resistant to in vitro ischemia. Although they clearly respond to the blockade of plasmalemmal K(ATP) channels (plasmaK(ATP)) by tolbutamide, these channels appear to be maximally open as a consequence of the fall in intracellular nucleotides and, therefore, diazoxide has no further effect.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Reinhardt R,Manaenko A,Pissarek M,Wagner A,Illes Pdoi
10.1016/s0197-0186(01)00102-4subject
Has Abstractpub_date
2002-04-01 00:00:00pages
427-33issue
5eissn
0197-0186issn
1872-9754pii
S0197018601001024journal_volume
40pub_type
杂志文章abstract::Development of tissue structure and three-dimensional microenvironment is crucial for regeneration of axons in the peripheral nerve repair. In this study we aimed to evaluate the efficacy of nerve regeneration by using an acellular nerve allograft (ANA) injected with allogenic skin-derived precursor differentiated Sch...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2016.04.003
更新日期:2016-07-01 00:00:00
abstract::Platelet activating factor (PAF) has been suggested to play a critical role in the pathogenesis of neurological disorders. We assessed the effect of PAF against the toxicity of 1-methyl-4-phenylpyridinium (MPP(+)), a parkinsonian toxin, in relation to apoptotic process. PAF exhibited differential effect against the MP...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2010.03.006
更新日期:2010-05-01 00:00:00
abstract::Acetylcholinesterase release in the guinea-pig substantia nigra has been previously investigated 'on-line', using a sensitive chemiluminescent system. Since histological observations suggest that there is a difference in acetylcholinesterase distribution in the rat substantia nigra compared to that of the guinea-pig, ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(96)00057-5
更新日期:1996-12-01 00:00:00
abstract::Exposure to high levels of manganese (Mn) results in a neurological disorder, termed manganism, which shares a similar phenotype to Parkinson's disease due to the involvement of the basal ganglia circuitry in both. The initial symptoms of manganism are likely due to the involvement of the globus pallidus, a region ric...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2005.10.012
更新日期:2006-05-01 00:00:00
abstract::Several endogenous brain substances which inhibit [3H]muscimol binding were isolated, and one of them has been purified to apparent homogeneity. The purification involved the extraction of brain tissue with water, followed by several steps of gel filtration column chromatography and high performance liquid chromatogra...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(93)90134-q
更新日期:1993-11-01 00:00:00
abstract::Tryptophan hydroxylation in cockroach (Periplaneta americana) nervous tissue was measured and compared to the hydroxylation of tryptophan in rat brain. Tryptophan hydroxylation in both tissues requires a pterine cofactor, and is inhibited by p-chlorophenylalanine. The molecular weight of the protein responsible for hy...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(87)90045-3
更新日期:1987-01-01 00:00:00
abstract::The purpose of this study was to investigate the effect of (3S)-7-chloro-3-[2-((1R)-1-carboxyethoxy)-4-aminomethylphenyl]aminocarbonylmethyl-1,3,4,5-tetrahydrobenz[c,d]indole-2-carboxylic acid hydrochloride (SM-31900), an antagonist with high selectivity and affinity for the NMDA receptor glycine-binding site, on the ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(02)00137-7
更新日期:2003-04-01 00:00:00
abstract::Natriuretic peptides and their receptors are widely expressed in mammalian CNS and increasing evidence implicates them in the regulation of neural development, synaptic transmission and processing of information, and neuroprotection. Although the peptides have been mainly localized in neuronal populations they are als...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2010.03.004
更新日期:2010-11-01 00:00:00
abstract::Astrocytes play an important role in chemical signalling, acting as receptive as well as secretory elements. They can express receptors for essentially all classical neurotransmitter substances and for a large variety of peptides. Recent evidence indicates that astrocytes are involved in the information processing wit...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/s0197-0186(02)00045-1
更新日期:2002-11-01 00:00:00
abstract::The mechanisms associated with cognitive decline in post-menopausal state driven by loss of ovarian function and reduced estrogen levels are not well understood. The aim of the present study is to investigate the role of mitochondrial dysfunctions in cognitive impairment in post-menopausal state and to evaluate the pr...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2014.04.011
更新日期:2014-07-01 00:00:00
abstract::We have used an in vitro system to monitor the effects of high levels of ammonia and ethanol on glial cells. Nuclei were isolated and the protein profiles examined by two-dimensional gel electrophoresis. Acute exposure of rat astrocyte cell cultures to ammonia or ethanol resulted in changes in cellular morphology and ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(88)90037-x
更新日期:1988-01-01 00:00:00
abstract::A single molecular species of GTP-binding protein (G protein) has been purified from the bovine cerebral cortex. The immunoblot analysis indicated that the isolated G protein might be Gi1 or Gi2 but not Go, since it was reacted by specific antibodies, anti-Gi alpha 1-2 and anti-Gi alpha 1-1, but not anti-Go alpha. Whe...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(96)00138-6
更新日期:1997-07-01 00:00:00
abstract::Endoplasmic reticulum (ER) stress is linked to several neurological disorders, and neuronal injury cascades initiated by excessive ER stress are mediated, in part, via mitochondrial dysfunction. In the present study, we identified FAM3A as an important regulator of ER stress-induced cell death in neuronal HT22 cells. ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2016.02.010
更新日期:2016-03-01 00:00:00
abstract::The effects of membrane lipid disturbances induced by ischemia and exogenously added lipids on the uptake of GABA and Ca(2+) were investigated in gerbil brain synaptosomes. Ischemia was produced by bilateral ligation of common carotid arteries in Mongolian gerbil for 10 min. The level of the free fatty acids (FFA) inc...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(86)90101-4
更新日期:1986-01-01 00:00:00
abstract::Alpha-synuclein (ASN), a 140-amino acid protein, is richly expressed in presynaptic terminals in the central nervous system, where it plays a role in synaptic vesicle function. However, if it is altered and accumulated it is involved in neurodegeneration as Parkinson's disease (PD). ASN contained 35-amino acid domain ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2006.01.025
更新日期:2006-09-01 00:00:00
abstract::The expression of 5-hydroxytryptamine-2B (5-HT2B) receptor mRNA has recently been shown in cultured astrocytes. Here the expression of functional 5-HT2B receptors has been studied in cultured astrocytes from rat cerebral cortex, hippocampus, and brain stem. Fluo-3- and fura-2-based microspectrofluorometry was used for...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(99)00134-5
更新日期:2000-04-01 00:00:00
abstract::The concentrations of histamine reported vary considerably from species to species. The present studies sought to determine if blood sampling techniques were at least in part responsible for this large variability. Since plasma catecholamines are influenced by the stress associated with blood sampling, these biogenic ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(85)90171-8
更新日期:1985-01-01 00:00:00
abstract::In the present study we have investigated the relationship between serotonergic receptor(s) (5-HTR) and muscarinic cholinergic receptor (mAChR) activation, leading to the arachidonic acid (AA) release and inositol phosphates (IPs) formation in adult and aged brain cortex synaptoneurosomes. It was observed that seroton...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(95)00001-o
更新日期:1995-06-01 00:00:00
abstract::Alzheimer's disease as well as prion-related encephalopathies are neurodegenerative disorders of the central nervous system, which cause mental deterioration and progressive dementia. Both pathologies appear to be primarily associated with the pathological accumulation and deposit of β-amyloid or prion peptides in the...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2011.01.019
更新日期:2011-05-01 00:00:00
abstract::Synaptic degeneration is one of the earliest hallmarks of Alzheimer disease (AD) and results in loss of cognitive function. One of the causative agents for the synaptic degeneration is the amyloid β-peptide (Aβ), which is formed from its precursor protein by two sequential cleavages mediated by β- and γ-secretase. We ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2012.03.016
更新日期:2012-07-01 00:00:00
abstract::Alzheimer's disease (AD) is defined both by its progressive cognitive deterioration and hallmark increase in neuronal Aβ plaque formation. However, many of the underlying neurobiological facets of this disease are still being elucidated. Previous research has demonstrated that production of neuronal hydrogen sulfide (...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2014.01.004
更新日期:2014-02-01 00:00:00
abstract::This review summarizes our present view on the molecular pathogenesis of human (h) E3-deficiency caused by a variety of genetic alterations with a special emphasis on the moonlighting biochemical phenomena related to the affected (dihydro)lipoamide dehydrogenase (LADH, E3, gene: dld), in particular the generation of r...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2017.05.018
更新日期:2018-07-01 00:00:00
abstract::The mobilization of inositol triphosphate ip3 by N-methyl D-aspartate (NMDA) and kainate, two excitatory amino acid EAA receptor agonists, was studied in cultured chick retina cells as a function of culture differentiation. Kainate (EC50 = 30 microM) stimulated from 6 to 9-fold the production of [3H]ip3 between E8C3 (...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(94)00143-i
更新日期:1995-04-01 00:00:00
abstract::Although many studies have revealed alterations in neurotransmission during ischaemia, few works have been devoted to the neurochemical effects of mild hypoxia, a situation encountered during life in altitude or in several pathologies. In that context, the present work was undertaken to determine the in vivo mechanism...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2005.02.005
更新日期:2005-06-01 00:00:00
abstract::Two signaling pathways, phosphoinositide 3-kinase (PI-3k)/Akt and Ras/MAPK, are major effectors triggered by nerve growth factor (NGF). Rac1, Cdc42 and GSK-3beta are reported to be targets of PI-3k in the signal transduction for neurite outgrowth. Immediately after NGF was added, broad ruffles were observed temporaril...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2007.04.032
更新日期:2007-07-01 00:00:00
abstract::The present study was carried out to clarify whether the imidazolines clonidine, moxonidine and cirazoline as well as the guanidine aganodine inhibit noradrenaline release in the rat and rabbit brain via imidazoline receptors, alpha 2-adrenoceptors and/or histamine H3 receptors. Slices or synaptosomes from the rat or ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(96)00045-9
更新日期:1997-01-01 00:00:00
abstract::Mitochondria play a pivotal role in the regulation of energy metabolism and apoptotic pathways. Properties and functions of mitochondria might render subsets of selectively vulnerable neurons intrinsically susceptible to a different extent to cellular stress and degeneration. We have investigated the effect of 3-nitro...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2010.06.008
更新日期:2010-10-01 00:00:00
abstract::Taurine is found at millimolar concentration in the retina and retinal pigment epithelium. High concentrations of taurine are essential for maintenance of retinal function. Taurine uptake by retina and retinal pigment epithelium was significantly enhanced by physiological concentrations of insulin as well as by high g...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(99)00072-8
更新日期:1999-10-01 00:00:00
abstract::Cerebellar granule neurons produce homogenous cultures that provide a unique opportunity for quantifying the apoptosis by propidium iodide- and deoxynucleotidyl transferase-flow cytometry combined analysis and for studying its regulation by neurotrophins. Nerve growth factor (NGF) was found to promote postmitotic surv...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(96)00147-7
更新日期:1997-08-01 00:00:00
abstract::Cerebral edema is a potentially life-threatening complication shared by diseases of different etiology, such as diabetic ketoacidosis, acute liver failure, high altitude exposure, dialysis disequilibrium syndrome, and salicylate intoxication. Pulmonary edema is also habitually present in these disorders, indicating th...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2012.05.007
更新日期:2012-07-01 00:00:00