Abstract:
:Several lines of evidence indicate that ATP may play an important role in Long-Term Potentiation. In this investigation we evaluated the effect of a memory task (step-down inhibitory avoidance) on the synaptosomal ecto-enzymes (ATP diphosphohydrolase and 5'-nucleotidase) involved in the degradation of ATP to adenosine. After the training session, a decrease in the ATPase (40%) and ADPase (29%) activities of ATP diphosphohydrolase as well as was a decrease in 5'-nucleotidase activity (31%) was observed in hippocampal synaptosomes of rats trained and killed immediately after training. In synaptosomes of rats killed 30 minutes after training, a decrease in ATPase activity (28%) was observed. In the test session, no significant changes were observed in the enzyme activities studied. These results provide new information about the activity of ecto-enzymes involved in nucleotide degradation and their possible participation in mechanisms of acquisition and modulation of memory processing.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Bonan CD,Dias MM,Battastini AM,Dias RD,Sarkis JJdoi
10.1023/a:1021084422228subject
Has Abstractpub_date
1998-07-01 00:00:00pages
977-82issue
7eissn
0364-3190issn
1573-6903journal_volume
23pub_type
杂志文章abstract::Somatostatin contents of striatum, hippocampus, and pons medulla have been followed in two inbred strains of mice (C57B1/6J and Balb/cJ) with aging and long term alcohol exposure (over a 25 month period of intoxication). Marked strain dependent differences in basic levels of somatostatin and genotypic variations in re...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00965332
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abstract::The effects of chronic pentobarbital (PB) treatment on the binding characteristics of [3H]flunitrazepam (FLU) in rat brain were examined. Saline or sodium PB (500 micrograms/10 microliters/hr) was infused into the lateral cerebral ventricles of rats for 6 days using osmotic pumps. Immediately before withdrawal, there ...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00966726
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abstract::The standard ELISA technique was improved for the detection of antigalactocerebroside antibody in biological fluid. Mouse monoclonal antigalactocerebroside antibody was used to demonstrate specificity and sensitivity of the technique. After optimization of the assay, the usefulness of this measurement for the evaluati...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00971533
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abstract::The endogenous sialidase (N-acetylneuraminidase) activity of membranes prepared from goldfish retina and optic tectum displays characteristics similar to those reported for neural plasma membrane sialidases of other organisms. Endogenous membrane sialidase activity was found to be optimal at ph 4.0, and maximal releas...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00965657
更新日期:1983-01-01 00:00:00
abstract::In this review we examine successively: 1) the major effects of thyroid hormone deficiency seen during brain development with special emphasis on the changes in neuronal morphology and migration occurring postnatally in the cerebellum. 2) The effects of this hormone on microtubule assembly during neurite outgrowth and...
journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1007/BF00965840
更新日期:1991-09-01 00:00:00
abstract::Previous studies have shown that early life stress induced by maternal separation or non-handling can lead to behavioural deficits in rats and that these deficits can be alleviated by providing palatable cafeteria high-fat diet (HFD). In these studies we investigated the effects of maternal separation or non-handling ...
journal_title:Neurochemical research
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abstract::Fecal incontinence and constipation still remain the major complications after procedures for anorectal malformations (ARMs). Previous studies have demonstrated a decrease of neural cell in lumbosacral spinal cord of ARMs patients and rat models. However, the underlying mechanism remains elusive. In this study, the ne...
journal_title:Neurochemical research
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doi:10.1007/s11064-017-2354-1
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-015-1568-3
更新日期:2015-05-01 00:00:00
abstract::The influence of theophylline (2.5--100 mg/kg p.o.) on cyclic 3',5'-adenosine monophosphate (cAMP) and cyclic 3',5'-guanosine monophosphate (cGMP) in brain of Sprague-Dawley rats (0.5--3.0 hr after administration of theophylline) was investigated. It was found that theophylline increases cAMP and cGMP levels when admi...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00964436
更新日期:1979-10-01 00:00:00
abstract::A very large body of evidence from in vivo studies has been accumulated on a link between the change of energy and cell survival/apoptosis. Using an in vitro ischemia model, we have previously shown that ischemia could induce apoptosis in astrocytes. In this study, we utilized the same in vitro model to investigate ch...
journal_title:Neurochemical research
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更新日期:2002-12-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-013-1069-1
更新日期:2013-08-01 00:00:00
abstract::N-Methyl-D-aspartate (NMDA) and L-glutamate activate membrane receptors that produce substantial permeation of Na+, K+ and Ca2+ through the neuronal membrane. These ionic fluxes are intimately linked to processes that regulate neuronal survival, growth and differentiation. Intracellular free Ca2+ concentrations are th...
journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1007/BF00966862
更新日期:1992-01-01 00:00:00
abstract::Remyelination promoting human IgMs effectively increase the number of myelinated axons in animal models of multiple sclerosis. Hence, they ultimately stimulate myelin production by oligodendrocytes (OLs); however, their exact mechanism of action remains to be elucidated, and in particular, it remains unclear whether t...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-018-2701-x
更新日期:2019-06-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-007-9508-5
更新日期:2008-02-01 00:00:00
abstract::Cerebral blood flow (CBF) and cerebellar blood flow (CeBF) were measured and correlated with brain lactate, pyruvate and adenosine triphosphate concentrations from groups representing 3-week old suckling (n = 10), 18-22-week old adult (n = 9) and 70-week old aged (n = 7) Sprague-Dawley rats before and during bilateral...
journal_title:Neurochemical research
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doi:10.1023/a:1027321203294
更新日期:1997-01-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-009-0066-x
更新日期:2010-03-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1023/a:1022493013904
更新日期:1998-03-01 00:00:00
abstract::Alcohol abuse affects several neurological pathways and causes significant alterations in the brain. Abstention from alcohol causes only a marginal decrease in oxidative stress and neuro inflammation. Our previous studies had shown that an active metabolite of vitamin A, all trans retinoic acid (ATRA), ameliorates alc...
journal_title:Neurochemical research
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doi:10.1007/s11064-018-2595-7
更新日期:2018-09-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-017-2267-z
更新日期:2017-09-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1020752101736
更新日期:1999-09-01 00:00:00
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journal_title:Neurochemical research
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journal_title:Neurochemical research
pub_type: 杂志文章,评审
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更新日期:2011-07-01 00:00:00
abstract::The effects of the following drugs: nimodipine (1 mg/kg b.w., i.p.), 2-amino-5-phosphonovaleric acid (4 mg/kg b.w., i.p.) and propentofylline (25 mg/kg b.w., i.p.), administered (alone or in combination) at the end of 15 min bilateral ischemia in gerbils were evaluated on mitochondrial superoxide dismutase (SOD), glut...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00966815
更新日期:1994-02-01 00:00:00
abstract::Nicotinic agonists stimulate 22Na flux in rat pheochromocytoma PC12 cells. The stimulatory effect of carbamylcholine is maximal at 1 mM, while the stimulatory effect of nicotine and anatoxin maximize at the same level at 100 microM and 10 microM, respectively. The tertiary amines arecolone and isoarecolone have no eff...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00965571
更新日期:1991-04-01 00:00:00
abstract::Turmeric has been in use since ancient times as a condiment and due to its medicinal properties. Curcumin, the yellow colouring principle in turmeric, is polyphenolic and major active constituent. Besides anti-inflammatory, thrombolytic and anticarcinogenic activities, curcumin also possesses strong antioxidant proper...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-007-9547-y
更新日期:2008-06-01 00:00:00
abstract::The consumption of flavonoid-rich foods, in particular fruits and vegetables, has been epidemiologically associated with a reduced risk of heart disease, neurodegenerative disease, cancer and other chronic diseases. Flavonoid glycosides, the main class of flavonoids, have been shown to exert CNS-mediated activities, p...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-009-9969-9
更新日期:2009-10-01 00:00:00
abstract::Our previous studies have shown that three sigma (sigma) receptor ligands, (+)-N-allylnormetazocine ((+)-SKF-10,047), (+/-)-pentazocine and 1,3-di(2-tolyl)guanidine (DTG) differently regulated the dopamine (DA) transmission in the rat brain. In the present study, we attempted to clarify the role of sigma 1 receptor su...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1027361101419
更新日期:1997-09-01 00:00:00
abstract::Neuronal differentiation and aging are known to involve many genes, which may also be differentially expressed during these developmental processes. From primary cultured cerebral cortical neurons, we have previously identified various differentially expressed gene transcripts from cultured cortical neurons using the ...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-005-8800-5
更新日期:2005-10-01 00:00:00
abstract::Silibinin has been widely used to treat liver diseases due to its antioxidant activity. However, the effects of silibinin on the central nervous system have not been thoroughly investigated. The pathological hallmarks of Alzheimer's disease are the accumulation of amyloid β protein, development of neurofibrillary tang...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-017-2389-3
更新日期:2017-12-01 00:00:00
abstract::It has been established that oligodendrocytes, the myelin forming cells, participate in iron homeostasis through the synthesis and secretion of transferrin. Here we investigated whether a correlation exists between myelination, the commonly studied function of oligodendrocytes, and that of transferrin synthesis and se...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-004-1826-2
更新日期:1999-02-01 00:00:00