Abstract:
:Intracellular recordings were made from neurons in a rat locus coeruleus slice preparation in vitro. A postsynaptic potential was evoked by electrical stimulation of afferents to the neurons. CI-977 ([5R-(5a,7a,8b)]-N-methyl-N-[7-(1-pyrrolidinyl)-1-oxaspiro[4.5]dec -8-yl[-4-benzofuranacetamide monohydrochloride) caused a depression of the evoked postsynaptic potential on locus coeruleus neurons. This action was reversed on washout. Bremazocine had a similar action on less than 50% of locus coeruleus neurons. Concentrations of CI-977 which depressed the postsynaptic potential did not affect either passive membrane conductance or a voltage-sensitive potassium current resembling IA. The depression of the excitatory postsynaptic potential caused by CI-977 remained in the presence of either 30 microM bicuculline and picrotoxin or when potassium acetate-filled recording electrodes were used. Using potassium chloride-filled recording electrodes and in the presence of 30 microM 6-cyano-2,3-dihydro-7-nitroquinoxaline-2,3-dione and either 30 microM DL-2-amino-5-phosphonovaleric acid or 500 microM kynurenic acid, CI-977 had no effect on the postsynaptic potential. The effects of CI-977 were reversed by 30-100 nM naloxone and 1-10 nM norbinaltorphimine but not by 1-10 nM naloxone. The hyperpolarizing response to the mu-opioid receptor-selective agonist D-Ala2,Nme Phe4,Gly-ol5 (DAGOL) was blocked by 1-10 nM naloxone but not by 1-100 nM norbinaltorphimine. The hyperpolarizing response to DAGOL was not affected by high doses of CI-977.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Pinnock RDdoi
10.1016/0306-4522(92)90123-jkeywords:
subject
Has Abstractpub_date
1992-01-01 00:00:00pages
87-94issue
1eissn
0306-4522issn
1873-7544pii
0306-4522(92)90123-Jjournal_volume
47pub_type
杂志文章相关文献
NEUROSCIENCE文献大全abstract::The effect of nerve growth factor on the intact versus injured septohippocampal cholinergic system of adult rats was studied. Nerve growth factor was continuously infused into the lateral ventricle of adult uninjured rats or rats that had received unilateral partial transection of the fimbria. Controls (operated and u...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(89)90309-6
更新日期:1989-01-01 00:00:00
abstract::The findings in this feline study indicate that the enkephalin-positive subcommissural part of the globus pallidus, which is known to contain GABA and cholinergic cells projecting to the cortex, is innervated by the anterodorsal region of the caudate nucleus, but not by the core. Like stimulation of a particular subcl...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(89)90405-3
更新日期:1989-01-01 00:00:00
abstract::The purpose of the present study was to examine whether the rostroventral portion of the medulla oblongata (RVM) exerts descending modulation on the cardiosomatic motor reflex (CMR) in rats. Capsaicin (1 μg/ml, 0.2 ml) was injected into the pericardial sac as an algesic substance to induce the CMR, which was monitored...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2011.04.016
更新日期:2011-06-30 00:00:00
abstract::It is well established that task complexity can affect both performance and brain processing. Event-related potentials (ERPs) studies have shown modulation of the well-known N2 and P3 components. However, limited information is available on the recently described frontal components associated with processing within th...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2020.09.042
更新日期:2020-11-21 00:00:00
abstract::Synaptic plasticity involves remodeling of extracellular matrix. This is mediated, in part, by enzymes of the matrix metalloproteinase (MMP) family, in particular by gelatinase MMP-9. Accordingly, there is a need of developing methods to visualize gelatinolytic activity at the level of individual synapses, especially ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2008.05.045
更新日期:2009-01-12 00:00:00
abstract::Transplantation of embryonic dopaminergic neurons is an experimental therapy for Parkinson's disease, but limited tissue availability and suboptimal survival of grafted dopaminergic neurons impede more widespread clinical application. Glial cell line-derived neurotrophic factor (GDNF) and neurotrophin-4/5 (NT-4/5) exe...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(01)00418-3
更新日期:2001-01-01 00:00:00
abstract::The blockade of serotoninergic receptors with methysergide or the activation of alpha(2)-adrenoceptors with moxonidine into the lateral parabrachial nucleus (LPBN) increases water and 0.3 M NaCl intake in rats treated with furosemide (FURO) combined with captopril (CAP). In the present study we investigated the effect...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2009.08.048
更新日期:2009-12-01 00:00:00
abstract::Dopamine and endocannabinoids are neurotransmitters known to play a role in the activity of the basal ganglia motor circuit. While a number of studies have demonstrated functional interactions between type 1 cannabinoid (CB1) receptors and dopaminergic systems, we still lack detailed neuroanatomical evidence to explai...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(03)00070-8
更新日期:2003-01-01 00:00:00
abstract::Erythropoietin (EPO) and its receptor (EPO-R), mediate neuroprotection from axonopathy and apoptosis in the peripheral nervous system (PNS). We examined the impact and potential mechanisms of local EPO signaling on regenerating PNS axons in vivo and in vitro. As a consequence of injury, peripheral nerve axons and DRG ...
journal_title:Neuroscience
pub_type: 杂志文章,收录出版
doi:10.1016/j.neuroscience.2008.03.052
更新日期:2008-06-23 00:00:00
abstract::Alzheimer's disease (AD), the most prominent form of dementia in elderly, is a yet incurable degenerative neurological illness characterized by memory loss. Here, we used an AD rat model to investigate the in vivo efficacy of caprospinol, a disease-modifying steroid developed on the concept that reduced synthesis of 2...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2009.10.033
更新日期:2010-01-20 00:00:00
abstract::In spite of the existence of pedunculopontine tegmental nucleus (PPTg) projections to cerebellar nuclei, their nature and functional role is unknown. These fibers may play a crucial role in postural control and may be involved in the beneficial effects induced by deep-brain stimulation (DBS) of brainstem structures in...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2015.12.055
更新日期:2016-03-11 00:00:00
abstract::Ablation of capsaicin-sensitive afferent neurons enhances experimentally induced ulceration in the rat gastric mucosa, which suggests that these neurons are involved in gastric mucosal protection. To provide direct evidence for such a function it was investigated whether stimulation of afferent nerve endings by the in...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(88)90201-1
更新日期:1988-12-01 00:00:00
abstract::Mutation of the α-thalassemia/mental retardation syndrome X-linked protein, ATRX, causes intellectual disability and is associated with pleiotropic defects including ophthalmological abnormalities. We have previously demonstrated that Atrx deficiency in the mouse retina leads to the selective loss of inhibitory intern...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2020.10.030
更新日期:2021-01-01 00:00:00
abstract::In vitro studies have demonstrated that β2-adrenergic receptor activation stimulates glycogen degradation in astrocytes, generating lactate as a potential energy source for neurons. Using in vivo microdialysis in mouse cerebellar white matter we demonstrate continuous axonal lactate uptake and glial-axonal metabolic c...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2014.07.022
更新日期:2014-09-26 00:00:00
abstract::Gap junctional intercellular communication (GJIC) may play an important role in the hearing process. Cisplatin is an anticancer drug that causes hearing loss and Gingko biloba extracts (EGb 761) have been used as an antioxidant and enhancer for GJIC. The purpose of this study was to examine the efficiency of EGb 761 i...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2013.04.001
更新日期:2013-08-06 00:00:00
abstract::In unanesthetized cats it has been found that pyramidal volleys elicited upon medullary pyramidal tract stimulation were capable of modifying the discharge of 41% of intracerebellar nuclear cells, via pontocerebellar systems impinging predominantly on the lateral cerebellar cortex. The incidence of responsive cells wa...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(83)90304-4
更新日期:1983-06-01 00:00:00
abstract::Activation of muscarinic receptors leads to proliferation of astroglial cells and this effect is inhibited by ethanol. Among the intracellular pathways involved in the mitogenic action of muscarinic agonists, activation of the atypical protein kinase C zeta (PKC zeta) appears to be of most importance, and is also affe...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(03)00401-9
更新日期:2003-01-01 00:00:00
abstract::A recent study has described synchronous burst discharges of dentate hilar neurons and area CA3 pyramidal cells in the presence of the convulsants 4-aminopyridine and picrotoxin in guinea-pig hippocampal slices [Müller W. and Misgeld U. (1991) J. Neurophysiol. 65, 141-147]. To examine the synchronous activity of denta...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(94)90593-2
更新日期:1994-03-01 00:00:00
abstract::For over two decades it has been increasingly appreciated that synaptic plasticity mechanisms are subject to activity-dependent metaplastic regulation. In recent years it has also become apparent that astrocytes are active partners with neurons at synapses, and have the capability to powerfully regulate synaptic plast...
journal_title:Neuroscience
pub_type: 杂志文章,评审
doi:10.1016/j.neuroscience.2015.08.035
更新日期:2015-11-19 00:00:00
abstract::Ochratoxin A (OTA), a mycotoxin and widespread food contaminant, is known for its patent nephrotoxicity and potential neurotoxicity. Previous observations in vitro showed that in the CNS, glial cells were particularly sensitive to OTA. In the search for the molecular mechanisms underlying OTA neurotoxicity, we investi...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2005.04.030
更新日期:2005-01-01 00:00:00
abstract::The increase in excitatory outflow from the medial prefrontal cortex is critical to the development of sensitization to amphetamine. There is evidence that psychostimulant-induced changes in dopamine-GABA interactions are key to understanding the behaviorally sensitized response. The objective of this study was to cha...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2007.07.047
更新日期:2007-11-09 00:00:00
abstract::Exercise reduces the risk of developing a number of neurological disorders and increases the efficiency of cellular energy production. However, overly strenuous exercise produces oxidative stress. Proper oxygenation is crucial for the health of all tissues, and tight regulation of cellular oxygen is critical to balanc...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2015.03.015
更新日期:2015-06-04 00:00:00
abstract::The hippocampus plays an important role in the formation of new memories and spatial navigation. Recently, growing evidence supports the view that it is also involved in addiction to opiates and other drugs. Theoretical and experimental studies suggest that hippocampal neural-network oscillations at specific frequenci...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2010.09.052
更新日期:2010-12-15 00:00:00
abstract::Morphological features of nerve fibers and synapses containing GABA and [Met]enkephalin were studied at the light and electron microscopic levels in the superior cervical ganglia of rats by pre- and postembedding immunohistochemistry. Both GABA and [Met]enkephalin immunoreactivities were found in varicose nerve fibers...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(92)90372-9
更新日期:1992-08-01 00:00:00
abstract::In this study we have used the transcription assay with 5'-fluorouridine incorporation into nascent RNA to analyze the nuclear organization and dynamics of transcription sites in rat trigeminal ganglia neurons. The 5'-FU administrated by i.p. injection was successfully incorporated into nuclear domains containing acti...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2006.02.030
更新日期:2006-06-30 00:00:00
abstract::Enkephalins are peptides which have pharmacological properties similar to those of morphine. Guinea pigs were immunized with a leucine-enkephalin/thyroglobulin conjugate. Immunofluorescence histochemistry with antiserum revealed a widely distributed system of axons and their terminals in the nervous system of the rat....
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(76)90063-4
更新日期:1976-08-01 00:00:00
abstract::We previously showed that magnesium sulfate (MS) has systemic antinociceptive and local peripheral pronociceptive effects. The role of transient receptor potential (TRP) channels and acid-sensing ion channels (ASICs) in the mechanism of action of MS has not been investigated in detail. The aim of this study was to exp...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2016.09.032
更新日期:2016-12-17 00:00:00
abstract::Sensory events in the space around us trigger specific motor patterns directed toward or away from the spatial location of the sensory source. Spatially-defined sensorimotor associations are well-known in the visual domain but less so for the auditory modality. In particular no spatially-directed audio-motor associati...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2015.07.053
更新日期:2015-09-24 00:00:00
abstract::An original pathway of centrifugal acetylcholinesterase-positive fibres is described in the olfactory bulb of the rat. A dense network of positive fibres spreads out superficially at the boundaries of the lateral olfactory tract and the glomerular layer. These labelled fibres converge towards atypical glomerular struc...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(87)90183-7
更新日期:1987-12-01 00:00:00
abstract::Histochemistry for cytochrome oxidase reveals a vibrissa-related pattern in trigeminal nucleus principalis, subnucleus interpolaris, and the magnocellular portion of subnucleus caudalis. This pattern is apparent in late fetal animals and is disrupted by transection of the infraorbital nerve on the day of birth. We rec...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(92)90082-d
更新日期:1992-07-01 00:00:00