Abstract:
:An increase in medial perforant synaptic strength can be observed for hippocampal slices from rats exposed to environmental enrichment. The expression of enhanced synaptic strength exhibits properties similar to long-term potentiation (LTP), a physiological model of memory storage. Similarities include an increase in strength of the synaptic response in the absence of an altered paired-pulse ratio and an increase in the binding of the glutamate agonist alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate. Furthermore, environmental enrichment interacts with the mechanisms responsible for the induction of LTP by inhibiting further increases in synaptic strength following LTP-inducing stimulation. The results provide evidence for experience-mediated influences on postsynaptic mechanisms regulating medial perforant path synaptic strength.
journal_name
Brain Resjournal_title
Brain researchauthors
Foster TC,Gagne J,Massicotte Gdoi
10.1016/0006-8993(96)00707-xsubject
Has Abstractpub_date
1996-10-14 00:00:00pages
243-50issue
1-2eissn
0006-8993issn
1872-6240pii
0006-8993(96)00707-Xjournal_volume
736pub_type
杂志文章相关文献
BRAIN RESEARCH文献大全abstract::Administration of aminooxyacetic acid, (an inhibitor of gamma-aminobutyric acid (GABA)-transaminase which enhances the hypothalamic GABA content) increased luteinizing hormone (LH) and follicle stimulating hormone (FSH) levels in prepubertal rats (16 days of age), and decreased the levels of these pituitary hormones i...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(91)91508-x
更新日期:1991-11-01 00:00:00
abstract::38 primary afferents originating from de-efferented cat tibialis anterior muscle spindles were investigated. Ramp-and-hold stretches of the host muscle were performed with a varying amount of muscle pre-stretch while recording the primary afferent discharges. From the discharge responses an interspike interval functio...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(93)91650-h
更新日期:1993-05-28 00:00:00
abstract::Bcl-2 has been hypothesized to regulate many cellular functions in addition to its well-characterized role in the prevention of programmed cell death. To understand the role of Bcl-2 in regulating cell morphology and to explore the mechanism of this effect, we examined the effects of Bcl-2 overexpression on the morpho...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2006.07.017
更新日期:2006-09-27 00:00:00
abstract::The effect of cerebellar stimulation on the accommodation of the lens was examined in anesthetized cats. An infrared optometer was used to measure the refractive power of the lens during stimulation of the cerebellum. The area giving responses within latencies shorter than 160 msec and amplitudes larger than 0.15 diop...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(78)90334-7
更新日期:1978-09-29 00:00:00
abstract::In the present study, we assessed the beneficial synergistic effects of concurrent treatment with low doses of cilostazol and probucol against focal cerebral ischemic infarct in rats. The ischemic infarct induced by 2-h occlusion of middle cerebral artery (MCA) and 22-h reperfusion was significantly reduced in rat bra...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2007.04.051
更新日期:2007-07-09 00:00:00
abstract::The luteinizing hormone-releasing hormone (LHRH) system of the platyfish Xiphophorus has been studied using immunohistochemistry and retrograde transport of horseradish peroxidase (HRP). Three different populations of LHRH-positive cell bodies are present in the brain, one in the ventral telencephalon at the border to...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(81)91059-3
更新日期:1981-09-21 00:00:00
abstract::cGMP was proposed to be the agent which directly opens the light-sensitive channel in Limulus ventral photoreceptors. However, the light-sensitive rhabdomeral-lobe (R-lobe) is not uniformly responsive to cGMP injection; that is, there are 'hot spots' of sensitivity. A potent phosphodiesterase which rapidly hydrolyses ...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(91)90094-c
更新日期:1991-06-28 00:00:00
abstract::Intracellular Ca2+ concentration ([Ca2+]i) was measured in neurons, acutely dissociated from the rat dorsal raphe nucleus (DRN), with the fluorescent calcium probe Fluo3. Nociceptin (300 nM) had no effect on resting [Ca2+]i but reduced the magnitude of the [Ca2+]i transient triggered by depolarization in 90% of neuron...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(99)01965-4
更新日期:1999-10-23 00:00:00
abstract::Neuronal cells in primary culture have been demonstrated to possess specific insulin receptors (Boyd et al., J. Biol. Chem., 260 (1985) 15880-15884). Incubation of these cultures with insulin causes a dose-dependent inhibition of maprotiline-sensitive [3H]norepinephrine uptake. Maximum inhibition of 95% of maprotiline...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(86)91242-4
更新日期:1986-11-19 00:00:00
abstract::(1) Visual, auditory and olfactory input were not necessary for the performance of the lordosis reflex by female rats. Since taste is not involved in this behavior, somatosensory input must be sufficient for triggering the lordosis reflex. (2) Surgical cutaneous denervation markedly reduced the frequency and strength ...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(76)90987-2
更新日期:1976-01-09 00:00:00
abstract::Significant insights into the dynamics of neuronal populations have been gained in the olfactory system where rich spatio-temporal dynamics is observed during, and following, exposure to odours. It is now widely accepted that odour identity is represented in terms of stimulus-specific rate patterning observed in the c...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2011.07.032
更新日期:2012-01-24 00:00:00
abstract::Lithium and valproic acid are mood-stabilizing agents that are often used to manage the episodes of mania and depression that characterize bipolar disorder. These agents develop clinical efficacy with chronic treatment, but the neurobiological actions that contribute to their therapeutic effects remain unclear. The pr...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2006.03.102
更新日期:2006-06-06 00:00:00
abstract:OBJECTIVE:Previously, we found that the inhaled anesthetic isoflurane up-regulated the transcriptional factor hypoxia inducible factor (HIF)-1α protein levels during induction of neurodegeneration in the brain of neonatal rats. Here, we investigated the role of HIF-1α and the underlying signaling pathway in the neurode...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2016.10.014
更新日期:2016-12-15 00:00:00
abstract::Primary cultures of the 21 day foetal rat brain contain a cohort of astroblasts that concertedly acquire glial fibrillary acidic protein (GFAP) filaments between the 16th and 18th hour after plating. This burst of cytoskeletal differentiation is not observed in cultures initiated from the 18 day foetal brain and is no...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(85)90637-7
更新日期:1985-07-22 00:00:00
abstract::We previously reported that abdominal surgery induces Fos expression in specific hypothalamic and medullary nuclei and also causes gastric stasis. The gastric ileus is reduced by systemic capsaicin and abolished by central injection of corticotropin-releasing factor (CRF) antagonist. We studied the influence of system...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(96)01281-4
更新日期:1997-02-14 00:00:00
abstract::Thermoregulation is a complex intercommunicative function requiring coordination between core body temperature (CBT), the central nervous system, and peripheral vasculature. In menopausal women, dysregulation of thermoregulatory mechanisms leads to hot flushes and night sweats. A previous study in ovariectomized (OVX)...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2006.09.050
更新日期:2006-12-06 00:00:00
abstract::Normal adult albino and Sprague-Dawley rats, under intraperitoneal Nembutal anesthesia, were used to demonstrate enzymatic activity in the choroid plexus and ventricular ependyma. The brain tissues were perfused or immersed with cold 2% glutaraldehyde and 8% sucrose in 0.1 M cacodylate buffer (pH 7.2-7.4) for 30 min a...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(81)91035-0
更新日期:1981-10-19 00:00:00
abstract::Because considerable work has implicated the basal ganglia in oral-ingestive behavior, an assessment was made of the effects of trigeminal stimuli upon entopeduncular single units. Units wre recorded extracellularly in awake, paralyzed and locally anesthetized cats. The effects of two types of sensory input were teste...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(78)90194-4
更新日期:1978-02-10 00:00:00
abstract::We have applied a technique involving multi-channel linear filtering to the problem of sorting and identifying singly unit neuronal activity in records containing several simultaneously active units. The technique is effective even when the waveforms of two or more nerve impulses are superimposed. We have applied it s...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(75)90883-5
更新日期:1975-08-22 00:00:00
abstract::Prostaglandins are now thought to play an important role in nociceptive information transmission in the spinal cord. Prostaglandins are known to be produced by cyclooxygenase (COX), which catalyzes the conversion of arachidonic acid. Two forms of COX have been identified: COX-1, which is constitutively expressed in mo...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(96)00817-7
更新日期:1996-11-11 00:00:00
abstract::Oxidative stress has been implicated as a pathogenic mediator of neuronal perikarya cell death. Axons and oligodendrocytes, components of white matter, could also be vulnerable to oxidative damage. An experimental model of oxidative stress was induced by systemic injection of 3-nitropropionic acid (3-NPA). Animals rec...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(00)03266-2
更新日期:2001-02-23 00:00:00
abstract::Stimuli such as noise or hypoxia can induce a release of ATP into the cochlear fluid spaces. At nanomolar concentrations, ATP affects neurotransmission and electrochemical regulation of sound transduction. At higher concentrations, ATP may exert cytotoxicity acting on specific P2X(7) receptor subunits, thus contributi...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2006.05.094
更新日期:2006-08-09 00:00:00
abstract::The primate somatosensory neuraxis provides a highly translational model system with which to investigate adult neural plasticity. Here, we report immunohistochemical staining data for AMPA and GABAA/B receptor subunits of area 3b cortex and cuneate nucleus of adult squirrel monkeys one to five years after median and ...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2015.03.010
更新日期:2015-06-22 00:00:00
abstract::The present study examined dopamine-immunoreactive neuronal structures using immunohistochemistry in conjunction with an anti-dopamine antiserum, following injection of l-3,4-dihydroxyphenylalanine (L-DOPA) with or without an inhibitor of monoamine oxidase (Pargyline) in the cat brain. L-DOPA injection made it possibl...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2007.05.081
更新日期:2007-09-05 00:00:00
abstract::In most vertebrates and several insects, melatonin (N-acetyl-5-methoxytryptamine) is synthesized enzymatically from serotonin (5-hydroxytryptamine) by the sequential action of arylalkylamine N-acetyltransferase (NAT) and hydroxyindole-O-methyltransferase (HIOMT). In the freshwater planarian Dugesia japonica, which bel...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/s0006-8993(99)01418-3
更新日期:1999-05-29 00:00:00
abstract::Previous studies have shown that steroid receptor coactivator-1 (SRC-1) is involved in the regulation of Purkinje cell development and motor learning, neural stem cell differentiation and reproductive-related plasticity. It is widely distributed in the adult brain, but the aging-related changes in the brain remain unc...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2011.01.024
更新日期:2011-03-25 00:00:00
abstract::Mice with reduced expression of the NR1 subunit of the NMDA receptor (NR1 hypomorphic mice) display altered behavioral phenotypes that may relate to behavioral characteristics of schizophrenia. Altered phenotypes in the NR1 hypomorphs include marked deficits in species-typical behavioral interactions in tests of socia...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/j.brainres.2009.02.002
更新日期:2009-04-10 00:00:00
abstract::Spinally-projecting A5 neurons were studied with anatomical and electrophysiological techniques in the rat. A detailed study of the number and distribution of spinally-projecting catecholaminergic (CA) and non-catecholaminergic neurons present in a defined area of ventrolateral pontine reticular formation was performe...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(84)90206-3
更新日期:1984-06-11 00:00:00
abstract::Considerable evidence indicates an enhanced sympathetic innervation of muscular resistance arteries in the spontaneously hypertensive rat (SHR) compared with its normotensive Wistar-Kyoto (WKY) control. Since nerve growth factor (NGF) is known to affect the growth of sympathetic nerves, we have utilized a sensitive tw...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(93)91012-h
更新日期:1993-06-18 00:00:00
abstract::The effects of repeated, once daily exposure to either restraint or tail pinch stress on extracellular levels of dopamine in nucleus accumbens and striatum were electrochemically monitored in conscious rats using high-speed chronoamperometry. Acutely, both tail pinch and restraint increased extracellular dopamine leve...
journal_title:Brain research
pub_type: 杂志文章
doi:10.1016/0006-8993(92)91639-v
更新日期:1992-07-24 00:00:00