Abstract:
:The aim of this study was to investigate the involvement of calmodulin in phospholipase D activation in SH-SY5Y cells. Cells prelabelled with [3H]-palmitic acid were incubated with calmodulin antagonists and/or other compounds. Phosphatidylethanol, a specific marker for phospholipase D activity, and phosphatidic acid were analysed. The calmodulin antagonists, calmidazolium and trifluoperazine, induced an extensive increase in phosphatidylethanol formation, and thus increased basal phospholipase D activity, in a dose- and time-dependent manner. The effect of calmidazolium on carbachol-induced activation of muscarinic receptors was also studied. Calmidazolium did not significantly affect the amount of phosphatidylethanol formed following carbachol addition. However, taking into account the increase in basal activity observed after calmidazolium addition, calmidazolium probably inhibits the muscarinic receptor-induced phospholipase D activation. In addition to phosphatidylethanol, basal phosphatidic acid levels were also increased after calmidazolium and trifluoperazine addition. Incubation with calmidazolium (10 microM) for 10 min induced a two-fold increase in phosphatidic acid. The calmidazolium-induced increase in basal phospholipase D activity was not affected by the protein kinase inhibitors H7 and staurosporine. On the other hand tyrosine kinase inhibitors abolished the calmidazolium-induced activation of phospholipase D. Calmidazolium also induced tyrosine phosphorylation in parallel to the phospholipase D activation. In conclusion, our data indicate that calmodulin antagonists induce phospholipase D activity in SH-SY5Y cells via a tyrosine kinase dependent pathway. This may point to a negative control of phospholipase D by calmodulin although a calmodulin-independent mechanism cannot be excluded. Calmodulin antagonists may be useful tools to further elucidate the mechanisms of phospholipase D regulation.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
del Carmen Boyano-Adánez M,Gustavsson Ldoi
10.1016/s0197-0186(01)00067-5subject
Has Abstractpub_date
2002-03-01 00:00:00pages
261-8issue
3eissn
0197-0186issn
1872-9754pii
S0197018601000675journal_volume
40pub_type
杂志文章abstract::Inositol 1,4,5-trisphosphate (IP(3)) receptors belong to the intracellular calcium channels that release calcium from the intracellular stores after binding IP(3). Three types of IP(3) receptors occurred in a tissue specific manner and different promoters direct their gene expression. Thus, understanding of the transc...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2005.01.003
更新日期:2005-06-01 00:00:00
abstract::Phenylalanine and its phenyl metabolites produced a clear inhibition of chick brain mevalonate 5-pyrophosphate decarboxylase, while mevalonate kinase and mevalonate 5-phosphate kinase were not significantly affected. Phenolic derivatives produced a similar or higher inhibition than that found in the presence of phenyl...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(91)90182-d
更新日期:1991-01-01 00:00:00
abstract::The relative abilities of a series of local anesthetics in which either or both the ester oxygens had been replaced with sulfur or selenium to block axonal or synaptic preparations are compared with their abilities to displace (3)H-nicotine from lobster axon plasma membrane fragments. The relative affinities of a seri...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(80)90011-x
更新日期:1980-01-01 00:00:00
abstract::Gastrointestinal peptides and hormones are known to penetrate through the utero-placental barrier and regulate fetal development. In the present study, we tested permeation of maternal brain-derived neurotrophic factor (BDNF) to fetuses, using BDNF-gene deficient mice and exogenous BDNF administration. At embryonic da...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2008.11.005
更新日期:2009-02-01 00:00:00
abstract::Neuroinflammation is an important factor contributing to cognitive impairment and neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS), ischemic injury, and multiple sclerosis (MS). These diseases are characterized by inexorable progressive injur...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2020.104714
更新日期:2020-06-01 00:00:00
abstract::Long-term potentiation (LTP), a model of activity-dependent synaptic plasticity and of certain forms of memory, comprises the persistent enhancement of excitatory neurotransmission that results from high-frequency activation. A presynaptic component of LTP is thought to be modulated by a retrograde messenger generated...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/s0197-0186(96)00020-4
更新日期:1997-02-01 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::Differentiating granule cells develop survival requirements in vitro which can be met by treatment with high K+ or excitatory amino acids. Promotion of cell survival by N-methyl-D-aspartate (NMDA) or kainate has already been established and here we report that treatment of the cells with alpha-amino-3-hydroxy-5-methyl...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(94)90067-1
更新日期:1994-09-01 00:00:00
abstract::Increasing evidences support that glial connexins are involved in the demyelination pathology of multiple sclerosis (MS), a chronic inflammatory demyelinating disorder. Here, we review the data from patients with MS and animal models of MS that implicate connexins in demyelination. Connexins expressed in oligodendrocy...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2020.104731
更新日期:2020-06-01 00:00:00
abstract::The amyloid precursor protein (APP) and presenilin-1 (PS-1) are not only of importance for the normal functioning of the various neurons, but also play central roles in the pathogenesis of Alzheimer's disease (AD). Through the use of immunohistochemical and Western blot techniques, the bidirectional axonal transport o...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(02)00014-1
更新日期:2002-12-01 00:00:00
abstract::There has arisen considerable interest in the study of dopamine D(2/3) agonist binding sites by positron emission tomography (PET), based on the claim that agonist sites represent a functional subset of the total number of sites labeled by more conventional antagonist ligands. To test the basis of this claim, we used ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2010.01.010
更新日期:2010-05-01 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::Glucose is the preferred energy substrate for the adult brain. However, during periods of fasting and consumption of a high fat, low carbohydrate (ketogenic) diet, ketone bodies become major brain fuels. The present study was conducted to investigate how the ketogenic diet influences neuronal-glial interactions in ami...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2005.12.037
更新日期:2006-05-01 00:00:00
abstract::Stroke causes neuronal cell death and destruction of neuronal circuits in the brain and spinal cord. Injury to the brain tissue induces sterile inflammation triggered by the extracellular release of endogenous molecules, but cerebral inflammation after stroke is gradually resolved within several days. In this pro-reso...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2018.10.013
更新日期:2019-11-01 00:00:00
abstract::The accumulation of extracellular amyloid beta (Abeta42) both in brain and in cerebral vessels characterizes Alzheimer's disease (AD) pathogenesis. Recently, the possibility to functionalize nanoparticles (NPs) surface with Abeta42 binding molecules, making them suitable tools for reducing Abeta42 burden has been show...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2017.02.012
更新日期:2017-09-01 00:00:00
abstract::Although the mechanism of electroconvulsive therapy (ECT) is not clearly known, its effects on hormones have been widely studied. However, there are controversies about the effect of ECT on blood glucose level. In addition, the possible effects of ECT on the blood cholesterol, LDL, HDL, and triglyceride levels are ign...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2012.07.013
更新日期:2012-12-01 00:00:00
abstract::Neurosteroids are modulators of several receptors and ion channels and are implicated in the pathophysiology of several neuropsychiatric diseases including hepatic encephalopathy (HE). The neurosteroid, allopregnanolone, a positive allosteric modulator of GABA(A) receptors, accumulates in the brains of HE patients whe...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2005.12.006
更新日期:2006-06-01 00:00:00
abstract::Acyl-CoA synthetase activity was investigated in membrane fractions from normal and Trembler mouse sciatic nerves. Stearoyl-CoA synthesis in the Trembler assays was always about twice that observed in the control experiments under various conditions of CoA and ATP concentrations. In experiments using varying concentra...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(85)90035-x
更新日期:1985-01-01 00:00:00
abstract::Protein kinase C (PKC) is involved in several cell events including proliferation, survival and differentiation. The aim of this work was to investigate the role of PKC activation on retinal cells proliferation. We demonstrated that PKC activation by phorbol 12-myristate 13-acetate (PMA), a tumor promoter phorbol este...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/s0197-0186(02)00059-1
更新日期:2003-01-01 00:00:00
abstract::The turnover of phospholipids was compared in peripheral nerves of Trembler dysmelinating mutant and control mice, after intraperitoneal and local injection of labeled ethanolamine. In the mutant sciatic nerve, neurochemical analysis showed that [(14)C]ethanolamine is incorporated into EGP (ethanolamine glycerophospho...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(90)90045-u
更新日期:1990-01-01 00:00:00
abstract::The phenylglycines 3-hydroxyphenylglycine, 4-carboxy-3-hydroxy-phenylglycine (4C3HPG), 4-carboxyphenylglycine (4CPG) and alpha-methyl-4-carboxyphenylglycine (MCPG) were evaluated as putative selective antagonists of metabotropic glutamate receptors on single neurones of the ventrobasal thalamus of rats, with a view to...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(94)90093-0
更新日期:1994-05-01 00:00:00
abstract::Whereas carbachol, noradrenaline, serotonin and memantine stimulated inositol phosphates production and calcium mobilization in 3-5 day old rabbit retinal cultures, only carbachol and noradrenaline were effective when 25-30 day old cultures were used. The older retinal cultures contain only Müller cells which shows th...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(92)90183-r
更新日期:1992-10-01 00:00:00
abstract::(RS)-2-Amino-3-(3-hydroxy-5-phenyl-4-isoxazolyl)propionic acid (APPA), which is an analogue of (RS)-2-amino-3-(3-hydroxy-5-methyl-4-isoxazolyl)propionic acid (AMPA), shows the characteristics of a partial AMPA receptor agonist. Since (S)-APPA is a full AMPA agonist and (R)-APPA a competitive antagonist, the partial ag...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(95)00151-4
更新日期:1996-09-01 00:00:00
abstract::The function of PMP70, one of the four ABC half-transporters of mammalian peroxisomes, encoded by ABCD3 gene, is still unclear. The finding that PMP70 over-expression partially corrected very long-chain fatty acid oxidation defects in fibroblasts of X-linked adrenoleukodystrophy patients, has unveiled its potential cl...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2007.11.007
更新日期:2008-05-01 00:00:00
abstract::The anticonvulsant vigabatrin (VGB; SabrilR) irreversibly inhibits GABA transaminase to increase neural GABA, yet its mechanism of retinal toxicity remains unclear. VGB is suggested to alter several amino acids, including homocarnosine, β-alanine, ornithine, glycine, taurine, and 2-aminoadipic acid (AADA), the latter ...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2019.02.015
更新日期:2019-05-01 00:00:00
abstract::The objectives of this study are to identify the mechanism of mitochondrial dysfunction during cerebral ischemic/reperfusion (I/R) injury and the therapeutic potential of tetrahydrocurcumin (THC) to mitigate mitochondrial dysfunction in experimental stroke model. In our study, 8-10 weeks old male C57BL/6 wild-type mic...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2018.11.015
更新日期:2019-01-01 00:00:00
abstract::5,7-Dihydroxytryptamine (5,7-DHT) is a selective serotonergic neurotoxin by virtue of its selective uptake into 5-hydroxytryptamine neurons and its ability to undergo autoxidation. The mechanism by which 5,7-DHT induces neurodegenerative effects remains enigmatic. The mechanism of autoxidation of 5,7-DHT, which has be...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/0197-0186(88)90165-9
更新日期:1988-01-01 00:00:00
abstract::Excitotoxicity is the main event during neurological disorders producing drastic morphological and functional changes. Rac-GTPase is involved in cytoskeletal remodeling and survival. However, the role of Rac1 after cerebral ischemia has not been completely understood yet. In this study, we evaluated the activity of Ra...
journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2010.08.014
更新日期:2010-12-01 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 ubiquitin proteasome system (UPS) is a major cellular protein degradation pathway that involves the modulation of key proteins controlling inflammation, cell cycle regulation and gene expression. Modulation of the UPS with proteasome inhibitors has indicated efficacy in the treatment of several disease states incl...
journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2006.03.018
更新日期:2006-07-01 00:00:00