Abstract:
:It has been proposed that glutamatergic and dopaminergic systems are functionally opposed in their regulation of striatal output. The present study tested the effects of drugs that enhance AMPA-receptor-mediated glutamatergic transmission (ampakines) for their effects on dopamine-related alterations in cortical activity and locomotor behavior. Rats with unilateral 6-hydroxydopamine lesions of the ascending nigro-striatal dopamine system were sensitized to methamphetamine and then tested for methamphetamine-induced circling behavior in the presence and absence of ampakines CX546 and CX614. Both ampakines produced rapid, dose-dependent reductions in circling that were evident within 15 min and sustained through 1 h of behavioral testing. In situ hybridization maps of c-fos mRNA expression showed that in the intact hemisphere, ampakine cotreatment markedly increased c-fos expression in parietal, sensori-motor neocortex above that found in rats treated with methamphetamine alone. Ampakine cotreatment did not augment c-fos expression in frontal, sensori-motor cortex or striatum. Still larger ampakine-elicited effects were obtained in parietal cortex of the dopamine-depleted hemisphere where labeling densities were increased by approximately 60% above values found in methamphetamine-alone rats. With these effects, the hemispheric asymmetry of cortical activation was less pronounced in the ampakine-cotreatment group as compared with the methamphetamine-alone group. These results indicate that positive modulation of AMPA-type glutamate receptors 1) can offset behavioral disturbances arising from sensitized dopamine receptors and 2) increases aggregate neuronal activity in a regionally selective manner that is probably dependent upon behavioral demands.
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Hess US,Whalen SP,Sandoval LM,Lynch G,Gall CMdoi
10.1016/s0306-4522(03)00423-8keywords:
subject
Has Abstractpub_date
2003-01-01 00:00:00pages
509-21issue
2eissn
0306-4522issn
1873-7544pii
S0306452203004238journal_volume
121pub_type
杂志文章相关文献
NEUROSCIENCE文献大全abstract::The beta-amyloid precursor protein is the precursor of the main component of senile plaques (the beta-amyloid peptide or beta/A4) found in the brain of aged humans and, in higher amounts, in the brain of Alzheimer's disease and Down's syndrome subjects. Four different forms of beta-amyloid precursor protein messenger ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(93)90304-x
更新日期:1993-03-01 00:00:00
abstract::GABAA-receptors in the brain display a striking structural heterogeneity, which is based on a multiplicity of diverse subunits. The allocation of GABAA-receptor subtypes to identified neurons is essential for an analysis of the functional significance of receptor heterogeneity. Among GABA-receptive neurons, well-chara...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(93)90582-z
更新日期:1993-06-01 00:00:00
abstract::The sympathetic and sensory innervation of guinea-pig trachea and lung were studied by means of retrograde neuronal tracing using fluorescent dyes, and double-labelling immunofluorescence. Sympathetic neurons supplying the lung were located in stellate ganglia and in thoracic sympathetic chain ganglia T2-T4; those sup...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(92)90239-x
更新日期:1992-08-01 00:00:00
abstract::An animal's choice behavior is shaped by the outcome feedback from selected actions in a trial-and-error approach. Tonically active neurons (TANs), presumed cholinergic interneurons in the striatum, are thought to be involved in the learning and performance of reward-directed behaviors, but it remains unclear how TANs...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2020.08.007
更新日期:2020-10-15 00:00:00
abstract::In the present study the time-course of DNA fragmentation following insulin-induced hypoglycemia was examined. In situ localization of DNA breaks were studied by the terminal deoxynucleotidyl transferase-mediated biotin-deoxyuridine triphosphate nick-end labelling method, and the temporal profile of DNA-fragmentation ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(98)00559-4
更新日期:1999-01-01 00:00:00
abstract::Our recent data suggest that noradrenaline (NA) regulates expression of Per1 mRNA in rat C6 cells, as a model of brain astrocytes, by two distinct NA-mediating pathways. Although C6 cells possess potential astrocyte-type characteristics, we hypothesize that astrocytes located in a distinct tissue or organ play specifi...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2011.04.024
更新日期:2011-06-30 00:00:00
abstract::Recent studies have demonstrated that astrocytes express a variety of ion channels and neurotransmitter receptors and can modulate the activity of neurons. Since a single astrocyte makes tight contacts with many neighboring neuronal cells, they can provide efficient and wide modulation of neuronal networks. Here, we p...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2005.04.024
更新日期:2005-01-01 00:00:00
abstract::The electrophysiological, biochemical and behavioral responses produced by administration of haloperidol were studied in intact rats and in rats with 6-hydroxydopamine-induced partial lesions of the nigrostriatal dopamine pathway. In both control rats and rates tested four to 10 days postlesion, the electrophysiologic...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(92)90168-2
更新日期:1992-01-01 00:00:00
abstract::Hypocretins (orexins) are hypothalamic neuropeptides that play a crucial role in regulating sleep/wake states and autonomic functions including parasympathetic cardiac activity. We have recently demonstrated stimulation of the lateral paragigantocellular nucleus (LPGi), the nucleus which is thought to play a role in r...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2010.11.067
更新日期:2011-02-23 00:00:00
abstract::5-HT and agonists of the 5-HT receptor can modify the response of the mammalian pacemaker, which is located in the hypothalamic suprachiasmatic nuclei (SCN), to photic and nonphotic stimulation. Previous studies suggest that the 5-HT7 receptor is involved in the regulation of photic input, and the modulation of nonpho...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2007.10.028
更新日期:2008-03-03 00:00:00
abstract::Noradrenergic neurons from the locus coeruleus innervate several brain regions, such as hippocampus and cortex. The hippocampus exhibits the highest concentration of the neurotrophins nerve growth factor, brain-derived neurotrophic factor and neurotrophin-3 in the brain. To study the role of the noradrenergic system i...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(95)00346-k
更新日期:1996-01-01 00:00:00
abstract::It was demonstrated with autoradiographic methods that a tract of thin fibers, which is for the most part distinct from the brachium conjunctivum and its crossed descending limb, can be followed from the cerebellar nuclei to the inferior olive. Neurons from all regions of the interposed and dentate nuclei contribute t...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(87)90044-3
更新日期:1987-06-01 00:00:00
abstract::Layer V pyramidal cells in the intermediate part of the cerebral cortex enter the lumbar spinal gray, but not the cervical spinal gray matter, during the first postnatal week. To study if the ingrowth of intermediate corticospinal axons into the lumbar spinal gray is guided by a diffusible tropic factor, we co-culture...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(94)90096-5
更新日期:1994-03-01 00:00:00
abstract::The known genetic mutation causing Huntington's disease (HD) makes this disease an important model to study links between gene and brain function. An autosomal dominant family history and the availability of a sensitive and specific genetic test allow pre-clinical diagnosis many years before the onset of any typical c...
journal_title:Neuroscience
pub_type: 杂志文章,评审
doi:10.1016/j.neuroscience.2009.01.045
更新日期:2009-11-24 00:00:00
abstract::The cortical representation of the body surface is not fixed, but rather, is continuously modified by ongoing changes in sensory experience. Although the cellular and molecular mechanisms that subserve these changes are uncertain, increasing evidence suggests that synaptically-released zinc may play a role. Zinc is re...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2005.05.011
更新日期:2005-01-01 00:00:00
abstract::The development of chronic pain is associated with activity-dependent plastic changes in neuronal structures in the peripheral and central nervous system. In order to investigate the time-dependent processing of afferent noxious stimuli in the spinal cord we employed the quantitative autoradiographic 2-deoxyglucose te...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(99)00186-4
更新日期:1999-01-01 00:00:00
abstract::Cholecystokinin, substance P and methionine enkephalin all regulate the display of reproductive behaviour. Their expression is exquisitely regulated by estrogen in the limbic-hypothalamic circuit, a circuit that regulates the display of estrogen-sensitive female reproductive behavior. Relatively little is known, howev...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(97)00072-9
更新日期:1997-09-01 00:00:00
abstract::Brain ischemia induces a marked response of resident microglia and hematopoietic cells including monocytes/macrophages. The present study was designed to assess the distribution of microglia/macrophages in cerebral ischemia using bone marrow chimera mice known to express enhanced green fluorescent protein (EGFP). At 2...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(02)00954-5
更新日期:2003-01-01 00:00:00
abstract::Brain microvascular endothelial cell (BMEC) injury induced by ischemia-reperfusion (I/R) is the initial stage of blood-brain barrier (BBB) disruption, which results in a poor prognosis in ischemic stroke patients. Autophagy has been shown to have protective effects on BMECs against cerebral ischemic insults. However, ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2017.04.017
更新日期:2017-06-23 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::Neonatal handling, an experimental model of early life experiences, is known to affect the hypothalamic-pituitary-adrenal axis function thus increasing adaptability, coping with stress, cognitive abilities and in general brain plasticity-related processes. A molecule that plays a most critical role in such processes i...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2009.09.032
更新日期:2009-12-29 00:00:00
abstract::Proton magnetic resonance spectroscopy (1H-MRS) can provide noninvasive detection of brain metabolite changes in vivo in Alzheimer's disease (AD). AD is a prevalent neurodegenerative disorder characterized by deposition of β-amyloid peptides (Aβ) in multiple brain regions. Brain-derived neurotrophic factor (BDNF) is a...
journal_title:Neuroscience
pub_type: 杂志文章,收录出版
doi:10.1016/j.neuroscience.2013.04.015
更新日期:2013-08-15 00:00:00
abstract::The nucleus accumbens is considered to be critically involved in the control of complex motivated behaviors. By modulating its glutamatergic excitatory input, mesolimbic dopaminergic afferents have been implicated in the reinforcing properties of drugs of abuse. However, they might not represent the only path for infl...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(01)00372-4
更新日期:2001-01-01 00:00:00
abstract::Stimulus-induced pattern of bioelectric activity in human neocortical tissue was investigated by use of the voltage sensitive dye RH795 and a fast optical recording system. During control conditions stimulation of layer I evoked activity predominantly in supragranular layers showing a spatial extent of up to 3000 micr...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(03)00530-x
更新日期:2003-01-01 00:00:00
abstract::Olvanil ((N-vanillyl)-9-oleamide), a non-pungent transient receptor potential vanilloid type 1 agonist, desensitizes nociceptors and alleviates pain. But its molecular targets and signaling mechanisms are little known. Calcium influx through voltage-activated Ca(2+) channels plays an important role in neurotransmitter...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2006.03.023
更新日期:2006-08-11 00:00:00
abstract::This study aimed to evaluate the effects of repetitive transcranial magnetic stimulation (rTMS) on learning and memory in a rat model of vascular dementia (VaD) and to analyze the associated mechanisms. Bilateral carotid artery occlusion (2-VO) was used to establish a rat model of VaD. High-frequency (5Hz) rTMS was pe...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2015.10.038
更新日期:2015-12-17 00:00:00
abstract::The promotion of angiogenesis is a promising therapeutic strategy for ischemic stroke. Many long noncoding RNAs (lncRNAs) are related to angiogenesis following ischemic stroke. LncRNA small nucleolar RNA host gene 12 (SNHG12) was upregulated in oxygen-glucose deprivation (OGD)-exposed primary brain microvascular endot...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2018.08.029
更新日期:2018-10-15 00:00:00
abstract::Neuronal oscillations are important for information processing. The entorhinal cortex is one of the structures which is involved in generation of theta rhythm. The major role of the entorhinal cortex is to feed diverse sources of information both to and from the hippocampus. Far from simply being a funnel for this inf...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/s0306-4522(98)00113-4
更新日期:1998-08-01 00:00:00
abstract::Lower motor neuron dysfunction is one of the most debilitating neurological conditions and, as such, significantly impacts on the quality of life of affected individuals. Within the last decade, the engineering of mouse models of lower motor neuron diseases has facilitated the development of new therapeutic scenarios ...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/j.neuroscience.2014.05.045
更新日期:2014-08-22 00:00:00
abstract::Experimental animal studies have demonstrated a number of receptor localizations on specific cortical afferents and neurons. The present study of human posterior cingulate cortex evaluates the laminar distributions of particular receptors and their likely association with components of the neuropil. Coverslip autoradi...
journal_title:Neuroscience
pub_type: 杂志文章
doi:10.1016/0306-4522(90)90359-c
更新日期:1990-01-01 00:00:00