Abstract：
:The integrity of hippocampal G-protein mediated signalling following ibotenate induced lesion of the medial septum was examined. The lesion was confined histologically to the septum and induced a 23% reduction in hippocampal choline acetyltransferase (ChAT) activity and G-proteins levels and related enzyme activities were measured in the hippocampus following a 21 day survival period. The relative levels of five G-protein subunits (Gbeta, G(alpha)o, G(alpha)i1, G(alpha)i2, and G(alpha)s-L), basal GTPase, the degree of carbachol- or baclofen-stimulated GTPase activities, and the basal and fluoroaluminate-stimulated adenylate cyclase activities were apparently unaffected. To determine if our assay methodology was sensitive to changes in pre-synaptic signalling, we compared G-protein density in synaptosomes with total hippocampal homogenates. The concentration of G(alpha)q/11, G(alpha)i1, and G(alpha)i2. were significantly lower in synaptosomes, while G(alpha)o, was only marginally reduced. Thus, modest lesions of the medial-septal nucleus fail to alter G-protein signalling. However, our findings that G-protein density is lower in synaptosomal membranes than in total homogenates, indicates that the analysis of signalling events in synaptosomes following deafferentation could clarify adaptive changes which may occur at the presynaptic level.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
McLaughlin M,Inglis FM,Ross BM,Breen KC,McCulloch Jdoi
10.1016/s0197-0186(99)00033-9subject
Has Abstractpub_date
1999-07-01 00:00:00pages
59-64issue
1eissn
0197-0186issn
1872-9754pii
S0197-0186(99)00033-9journal_volume
35pub_type
杂志文章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：:Preventing or reducing tau hyperphosphorylation is considered to be a therapeutic strategy in the treatment of Alzheimer's disease (AD). Rapamycin may be a potential therapeutic agent for AD, because the rapamycin-induced autophagy may enhance the clearance of the hyperphosphorylated tau. However, recent rodent studie...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2013.01.014
更新日期：2013-03-01 00:00:00
abstract：:A simple, rapid and sensitive method for the detection of acetylcholine and choline in tissue extracts is reported. Acetylcholine and choline are first separated by HPLC then react in a mini-column with acetylcholinesterase and choline oxidase immobilized on Sepharose. The resulting H(2)O(2) produced by choline oxidas...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(86)90041-0
更新日期：1986-01-01 00:00:00
abstract：:The effect of aging and CDP-choline treatment (20 mg kg⁻¹ body weight i.p. for 28 days) on the maximal rates (V(max)) of representative mitochondrial enzyme activities related to Krebs' cycle (citrate synthase, α-ketoglutarate dehydrogenase, malate dehydrogenase), glutamate and related amino acid metabolism (glutamate...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2012.10.009
更新日期：2012-12-01 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：:This study evaluated the effects of a novel, pH-sensitive surfactant, dodecyl 2-(1'-imidazolyl) propionate (DIP), on cationic lipid mediated transfection in primary rat brain neuronal and glial cultures. The cationic lipid complex DOTAP/DOPE (1, 2-dioleoyl-3-trimethylammonium propionate and dioleoyl phosphatidylethano...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(00)00007-3
更新日期：2000-07-01 00:00:00
abstract：:Choline-O-acetyltransferase (ChAT) is the enzyme which catalyses the biosynthesis of the neurotransmitter acetylcholine in cholinergic neurons. Here we show that in mouse cholinergic NS-20Y neuroblastoma cells cultured in the presence of either okadaic acid (serine/threonine phosphatases 1 and 2A inhibitor) or KN-62 (...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(00)00064-4
更新日期：2001-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2015.10.008
更新日期：2015-12-01 00:00:00
abstract：:Conventional kinetic models of brain glucose uptake and metabolism that visualize brain glucose as being in a single pool in equilibrium with plasma, are unable to account for some recently described experimental findings. These include microdialysis demonstrations of a brain extracellular fluid glucose concentration ...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/0197-0186(95)00094-1
更新日期：1996-03-01 00:00:00
abstract：:The possible influence of cholinergic and dopaminergic mechanisms on neurotensin-containing neurones was examined at two different levels; nucleus accumbens and striatum in the rat brain. The acute treatment with the anticholinergic drugs atropine and scopolamine increased neurotensin concentrations in the striatum an...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(88)90145-3
更新日期：1988-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2005.06.003
更新日期：2005-12-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(88)90176-3
更新日期：1988-01-01 00:00:00
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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
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2018.10.007
更新日期：2018-12-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(87)90146-x
更新日期：1987-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2011.02.010
更新日期：2011-05-01 00:00:00
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 ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(95)00123-9
更新日期：1996-05-01 00:00:00
abstract：:Glial (GLT-1 and GLAST) and neuronal (EAAC1) high-affinity transporters mediate the sodium dependent glutamate reuptake in mammalian brain. Their dysfunction leads to neuronal damage by allowing glutamate to remain in the synaptic cleft for a longer duration. The purpose of the present study is to understand their con...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(99)00153-9
更新日期：2000-05-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(85)90071-3
更新日期：1985-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2015.06.014
更新日期：2015-11-01 00:00:00
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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
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2014.08.001
更新日期：2014-12-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2015.08.011
更新日期：2015-10-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2014.06.002
更新日期：2014-11-01 00:00:00
abstract：:A competitive RT-PCR assay was used to quantify the expression of the GABA(A) receptor beta(1), beta(2) and beta(3) isoform mRNA transcripts in the superior frontal cortex and motor cortex of 21 control and 22 alcoholic cases. A single set of primers was designed that permitted amplification of all three transcripts a...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2004.05.009
更新日期：2004-12-01 00:00:00
abstract：:A simple procedure for isolating a fraction enriched in synaptic plasma membrane (SPM) vesicles from sheep brain cortex is described and is used in studying uptake and release of [(3)H]GABA. The crude synaptosomal fraction was subjected to osmotic shock and the lysate was subfractioned in a discontinuous density gradi...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(90)90022-l
更新日期：1990-01-01 00:00:00
abstract：:This paper describes the background in experiment and theory on which present-day studies of the biochemistry of learning and memory are based. It then reviews specifically the use of passive avoidance training in the day-old chick as a model for the analysis of the cellular events associated with memory-formation. It...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(89)90055-7
更新日期：1989-01-01 00:00:00
abstract：:The concentrations of gamma-glutamylglutamate, gamma-glutamylglutamine, gamma-glutamylcysteine, glutamate, aspartate, glutamine, cyst(e)ine and glutathione (including disulfides) were determined by HPLC analysis of both the tissue and the surrounding medium of incubated rat hippocampal slices. High potassium concentra...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(95)00148-4
更新日期：1996-08-01 00:00:00
abstract：:Control of serotonin release and synthesis by amino acid neurotransmitters was investigated in rat rostral and caudal rhombencephalic raphe cells in primary cultures respectively. Endogenous amounts of taurine, glycine, GABA and glutamate were measured in both types of cultures. These amino acids were spontaneously re...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(93)90118-o
更新日期：1993-09-01 00:00:00
abstract：:Pregnenolone sulfate (PREGS) has been shown, either at high nanomolar or at micromolar concentrations, to increase neuronal activity by inhibiting GABAergic and by stimulating glutamatergic neurotransmission. PREGS is also a potent modulator of sigma type 1 (sigma1) receptors. It has been proposed that these actions o...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2007.08.022
更新日期：2008-03-01 00:00:00
