Abstract：
:Decreased cerebral blood flow, hence decreased oxygen and glucose, leads to ischemic brain injury via complex pathophysiological events, including excitotoxicity, mitochondrial dysfunction, increased intracellular Ca2+, and reactive oxygen species (ROS) generation. Each of these could also contribute to cerebral edema, which is the primary cause of patient mortality after stroke. In vitro brain slices are widely used to study ischemia. Here we introduce a slice model to investigate ischemia-induced edema. Significant water gain was induced in coronal slices of rat brain by 5 min of oxygen and glucose deprivation (OGD) at 35 degrees C, with progressive edema formation after return to normoxic, normoglycemic medium. Edema increased with increasing injury severity, determined by OGD duration (5-30 min). Underlying factors were assessed using glutamate-receptor antagonists (AP5/CNQX), blockade of mitochondrial permeability transition [cyclosporin A (CsA) versus FK506], inhibition of Na+/Ca2+ exchange (KB-R7943), and ROS scavengers (ascorbate, Trolox, dimethylthiourea, Tempol). All agents except KB-R7943 and FK506 significantly attenuated edema when applied after OGD; KB-R7943 was effective when applied before OGD. Significantly, complete prevention of ischemia-induced edema was achieved with a cocktail of AP5/CNQX, CsA and Tempo applied after OGD, which demonstrates the involvement of multiple, additive mechanisms. The efficacy of this cocktail further shows the potential value of combination therapies for the treatment of cerebral ischemia.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
MacGregor DG,Avshalumov MV,Rice MEdoi
10.1046/j.1471-4159.2003.01772.xkeywords:
subject
Has Abstractpub_date
2003-06-01 00:00:00pages
1402-11issue
6eissn
0022-3042issn
1471-4159pii
1772journal_volume
85pub_type
杂志文章abstract：:Previous studies have indicated that the brains of DBA/2J (D2) mice have a more heavily myelinated CNS than those of C57BL/6J (B6) at postnatal days 17-21. However, the amount of myelin in the brains of F1 (B6 X D2) hybrids is even higher than in their parental strains. To investigate further factors involved in regul...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb09995.x
更新日期：1987-10-01 00:00:00
abstract：:The distribution of cerebellar gangliosides was studied in staggerer (sg/sg) mutant mice, where the majority of granule cells die after completing their migration across the molecular layer. In addition, the external granule cell layer in sg/sg mice persists longer than in normal mice. Moreover, in the sg/sg cerebellu...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1984.tb12856.x
更新日期：1984-10-01 00:00:00
abstract：:The content of 1,2-diacylglycerol (DAG) was determined in sciatic nerves from normal and streptozotocin-induced diabetic rats. In nerves frozen in situ, DAG content was reduced 22% in the proximal region and 77% in the distal region of diabetic nerve, principally because of the loss of associated fat. DAG levels in fr...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb04604.x
更新日期：1990-09-01 00:00:00
abstract：:The group I metabotropic glutamate receptor agonist (S)-3,5-dihydroxyphenylglycine (DHPG) elicited two phases of synchronized neuronal (epileptiform) discharges in hippocampal slices: an initial phase of short duration discharges followed by a phase of prolonged discharges. We assessed the involvement of transient rec...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.04377.x
更新日期：2007-04-01 00:00:00
abstract：:To investigate the role of the retinoblastoma protein pRB in neuronal differentiation, we have measured the accumulation of hypophosphorylated pRB in PC12 cells stimulated by nerve growth factor (NGF). NGF induced the accumulation of hypophosphorylated pRB within 30 min and the level peaked after 12 h. Viral Kiras, cy...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.66062287.x
更新日期：1996-06-01 00:00:00
abstract：:Epidermal growth factor (EGF) is a member of a structurally related family containing heparin-binding EGF-like growth factor (HB-EGF) and transforming growth factor alpha (TGFalpha) that exerts neurotrophic activity on midbrain dopaminergic neurons. To examine neurotrophic abnormality in Parkinson's disease (PD), we m...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2005.03073.x
更新日期：2005-05-01 00:00:00
abstract：:Schwann cells provide a favorable microenvironment for successful regeneration of the injured peripheral nerve. Even though the roles of extracellular matrix proteins in the Schwann cell physiology have long been studied, the precise function of nidogen, a ubiquitous component of the basal lamina, in Schwann cells is ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04580.x
更新日期：2007-08-01 00:00:00
abstract：:The unique modification of the neural cell adhesion molecule (NCAM) by polysialic acid (polySia) is tightly associated with nervous system development and plasticity. The prevailing view that this large carbohydrate polymer acts as an anti-adhesive factor seems straightforward at first sight. However, during almost 25...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.2007.04716.x
更新日期：2007-11-01 00:00:00
abstract：:Rat-1 fibroblasts were transduced to express Drosophila choline acetyltransferase. The presence of an active enzyme in these cells (Rat-1/dChAT) was confirmed using various methods. Rat-1/dChAT fibroblasts released acetylcholine (ACh) into the culture medium. Moreover, intra- and extracellular levels of ACh could be i...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb10942.x
更新日期：1992-06-01 00:00:00
abstract：:Corticotropin-releasing factor (CRF) stimulates rat retinal adenylate cyclase activity in a concentration-dependent manner. The half-maximal effect is obtained at 50 nM CRF and the maximal stimulation corresponds to approximately 90% increase of basal enzyme activity. The CRF effect is counteracted by the CRF antagoni...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb04899.x
更新日期：1990-06-01 00:00:00
abstract：:The activation by endogenous dopamine of the inhibitory 3,4-dihydroxyphenylethylamine (dopamine) receptors modulating the electrically evoked release of [3H]acetylcholine [( 3H]ACh) and [3H]dopamine in rat striatal slices is a function of the concentration of dopamine accumulated in the synaptic cleft during electrica...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1985.tb05421.x
更新日期：1985-02-01 00:00:00
abstract：:Synaptotagmin-7 (Syt-7) is one of two major calcium sensors for exocytosis in adrenal chromaffin cells, the other being synaptotagmin-1 (Syt-1). Despite a broad appreciation for the importance of Syt-7, questions remain as to its localization, function in mediating discharge of dense core granule cargos, and role in t...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14986
更新日期：2020-09-01 00:00:00
abstract：:Methylphenidate (MPD) was found to inhibit competitively the striatal dopamine transporter (DAT) and bind at sites on the DAT in common with both cocaine (a non-substrate site ligand) and amphetamine (a substrate site ligand). Some methylphenidate analogues modified on the aromatic ring and/or at the nitrogen were tes...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.0721266.x
更新日期：1999-03-01 00:00:00
abstract：:Endocannabinoids (eCBs) play key roles in short-term and long-term synaptic plasticity in the corticostriatal circuit. By activating cannabinoid receptors expressed in the central nervous system, eCBs regulate several neural functions and behaviors. The major eCB 2-arachidonoyl-glycerol (2-AG) is particularly importan...
journal_title：Journal of neurochemistry
pub_type： 社论
doi：10.1111/jnc.14977
更新日期：2020-05-01 00:00:00
abstract：:A recent study has linked the butyrylcholinesterase (BChE) K-variant and the apolipoprotein epsilon4 isoform to late-onset Alzheimer's disease. These findings have been controversial and have led us to examine the differences between wild-type and K-variant BChE in enzyme activity, protein stability, and quaternary st...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2000.740869.x
更新日期：2000-02-01 00:00:00
abstract：:A continuous enzyme-linked fluorometric assay was used for determining the characteristics for glutamate exocytosis from guinea-pig cerebrocortical synaptosomes. Ca2+-dependent release can be induced not only by K+, but also by the Na+ channel activator veratridine and the Ca2+ ionophore ionomycin. K+-induced release ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb03394.x
更新日期：1987-07-01 00:00:00
abstract：:Dopamine beta-hydroxylase (DBH) catalyzes the synthesis of the neurohormone norepinephrine and is expressed only in noradrenergic and adrenergic cells of the nervous and endocrine systems. We have previously described a positive-acting genetic regulatory element of the DBH that contributes to the restricted expression...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.64010052.x
更新日期：1995-01-01 00:00:00
abstract：:Pigment epithelium-derived factor (PEDF), purified from human fetal retinal pigment epithelium cell culture medium, was shown to potentiate the differentiation of human Y-79 retinoblastoma cells. To investigate potential neurotrophic effects of PEDF on neurons other than those of retinal derivation, we used cultures o...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.64062509.x
更新日期：1995-06-01 00:00:00
abstract：:Long term consumption of a high fat diet (HFD) contributes to increased morbidity and mortality. Yet the specific effects of HFD consumption on brain aging are poorly understood. In the present study 20-month old male C57Bl/6 mice were fed either 'western diet' (41% fat), very high fat lard diet (60% fat), or correspo...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2010.06865.x
更新日期：2010-09-01 00:00:00
abstract：:We sought to investigate whether dexamethasone produces a coordinated, time-dependent effect on all enzymes in the catecholamine biosynthetic pathway in PC12 cells. The levels of mRNAs of tyrosine hydroxylase (TH), aromatic L-amino acid decarboxylase (AADC), and dopamine beta-hydroxylase (DBH) were examined at 0, 6, 1...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb03241.x
更新日期：1993-03-01 00:00:00
abstract：:Aminoguanidine inhibits the development of retinopathy in diabetic animals, but the mechanism remains unclear. Inasmuch as aminoguanidine is a relatively selective inhibitor of the inducible isoform of nitric oxide synthase (iNOS), we have investigated the effects of hyperglycemia on the retinal nitric oxide (NO) path...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.0022-3042.2001.00737.x
更新日期：2002-03-01 00:00:00
abstract：:The dopamine (DA) transporter (DAT) regulates DA neurotransmission by recycling DA back into neurons. Drugs that interfere with DAT function, e.g., cocaine and amphetamine, can have profound behavioral effects. The kinetics of DA transport by DAT in isolated synaptosomal or single cell preparations have been previousl...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.0732406.x
更新日期：1999-12-01 00:00:00
abstract：:The mature form of Alzheimer's beta-amyloid precursor protein (APP) is phosphorylated specifically at Thr(668) in neurons. In mature neurons, phosphorylated APP is detected in neurites, with dephosphorylated APP being found mostly in the cell body. In vitro, active cyclin-dependent kinase 5 (Cdk5) phosphorylated the c...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2000.0751085.x
更新日期：2000-09-01 00:00:00
abstract：:Ligand binding to the cannabinoid receptor of brain membranes has been characterized using [3H]CP 55,940 and the Multiscreen Filtration System. Binding of [3H]CP 55,940 is saturable and reaches equilibrium by 45 min at room temperature. At a concentration of 10 micrograms of membrane protein/well, the KD for [3H]CP 55...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.64020677.x
更新日期：1995-02-01 00:00:00
abstract：:We investigated the molecular events triggered by NMDA and 3,5-dihydroxyphenylglycine (DHPG) preconditioning, that lead to neuroprotection against excitotoxic insults (AMPA or oxygen and glucose deprivation) in rat organotypic hippocampal slices, with particular attention on glutamate receptors and on cannabinoid syst...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.15033
更新日期：2020-04-28 00:00:00
abstract：:We have previously shown that acrolein, a lipid peroxidation byproduct, is significantly increased following spinal cord injury in vivo, and that exposure to neuronal cells results in oxidative stress, mitochondrial dysfunction, increased membrane permeability, impaired axonal conductivity, and eventually cell death. ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.05002.x
更新日期：2008-02-01 00:00:00
abstract：:Intracranial microdialysis was used to investigate the origin of extracellular gamma-aminobutyric acid (GABA) in the ventral pallidum. Changes in basal GABA levels in response to membrane depolarizers, ion-channel blockers, and receptor agonists were determined. Antagonism of Ca2+ fluxes with high Mg2+ in a Ca(2+)-fre...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb10979.x
更新日期：1992-06-01 00:00:00
abstract：:The in vivo biosynthesis of cholecystokinin (CCK) in subcortical regions of the rat brain was studied by intracisternal pulse injections of [35S]methionine. The rats were killed 1.0 or 1.5 h after the injection. Subcortical CCK extracted in boiling water and acetic acid was immunoabsorbed by an antiserum specific for ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1980.tb06290.x
更新日期：1980-08-01 00:00:00
abstract：:For clarification of the beneficial effects of the extract of Ginkgo biloba (EGB) on triethyltin (TET) toxicity in rats, the phosphodiesterase (PDE) activities of the cerebral tissue were measured under in vitro and ex vivo conditions. Under in vitro conditions, low concentrations of EGB (0.25-4.0 mg/L) activated the ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb03401.x
更新日期：1987-07-01 00:00:00
abstract：:Tissue plasminogen activator (tPA) is necessary for hippocampal long-term potentiation. Synaptically released zinc also contributes to long-term potentiation, especially in the hippocampal CA3 region. Using cortical cultures, we examined whether zinc increased the concentration and/or activity of tPA. Two hours after ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2011.07322.x
更新日期：2011-09-01 00:00:00
