Abstract：
:The hippocampus may be functionally differentiated along its dorsoventral axis. In contrast to the wealth of data available on synaptic plasticity mechanisms in the dorsal hippocampus, little is known about synaptic plasticity processes in the intermediate hippocampus. Behavioral data suggest that this structure may play a distinct role in learning and memory. Here, we compared amplitudes, frequency-dependency and persistency of long-term potentiation (LTP) and long-term depression (LTD) in the dorsal (DDG) and intermediate dentate gyrus (IDG). In freely moving rats, high-frequency stimulation (HFS) at 200 Hz (10 burst of 15 stimuli) elicited LTP of similar magnitude in both structures that persisted for over 24 h. The intermediate dentate gyrus is more likely to exhibit persistent LTP than its dorsal counterpart, however: HFS at 200 Hz (3 or 1 burst(s)) or 100 Hz elicited short-term potentiation (STP) in DDG, unlike in the IDG, where LTP could be recorded for at least 4 h. Whereas low frequency stimulation (LFS) at 1 Hz elicited long-lasting LTD (>24 h) in the DDG, it had no significant effect on fEPSP profile in the IDG. LFS at 2 Hz elicited short-term depression in DDG and had no effect in IDG. LTP in both IDG and DDG required activation of N-methyl-D-aspartate receptors. Paired-pulse and input-output responses differed in IDG and DDG. Our data suggest that afferent input from the entorhinal cortex generates a different response profile in the dorsal vs. intermediate DG, which may in turn relate to their postulated distinct roles in synaptic information processing and memory formation. This article is part of the Special Issue entitled 'Glutamate Receptor-Dependent Synaptic Plasticity'.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Kenney J,Manahan-Vaughan Ddoi
10.1016/j.neuropharm.2013.02.017subject
Has Abstractpub_date
2013-11-01 00:00:00pages
108-18eissn
0028-3908issn
1873-7064pii
S0028-3908(13)00074-9journal_volume
74pub_type
杂志文章abstract：:The pathogenesis of Alzheimer's disease (AD) is characterized by cerebral deposits of amyloid beta-peptides (A beta) and neurofibrillary tangles which are surrounded by inflammatory cells. Long-term use of non-steroidal anti-inflammatory drugs (NSAIDs) reduces the risk of developing AD and delays the onset of the dise...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2005.07.004
更新日期：2005-12-01 00:00:00
abstract：:The involvement of metabotropic glutamate receptor group II (mGluRII) in the induction of long-term depression (LTD) was investigated in the medial perforant path of the rat dentate gyrus, a region with a very high density of mGluRII. Perfusion of either of two potent mGluRII agonists, (2S,1R,2R,3R)-2-(2S, 1'R, 2'R, 3...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(98)00168-3
更新日期：1999-01-01 00:00:00
abstract：:JAK4D, a first-in-class thyrotropin-releasing hormone (TRH)-based compound, is a prospective therapeutic candidate offering a multifaceted approach to treating neurodegeneration and other CNS conditions. The purpose of these studies was to determine the ability of JAK4D to bind to TRH receptors in human brain and to e...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2014.09.024
更新日期：2015-02-01 00:00:00
abstract：:This study confirms and extends an earlier report that acute administration of the serotonin (5-HT) antagonist, mianserin, caused a marked decrease in the density of 5-HT2 binding sites in brain of the rat (Blackshear and Sanders-Bush, 1982). Using [3H]ketanserin, a selective ligand for the 5-HT2 site, the present stu...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(86)90146-2
更新日期：1986-11-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2014.06.023
更新日期：2014-11-01 00:00:00
abstract：:Efforts to translate sub-anesthetic ketamine infusions into widespread clinical use have centered around developing medications with comparable neurobiological activity, but with attenuated psychoactive effects so as to minimize the risk of behavioral toxicity and abuse liability. Converging lines of research, however...
journal_title：Neuropharmacology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.neuropharm.2018.01.005
更新日期：2018-11-01 00:00:00
abstract：:Over one hundred years ago, Sir Charles Sherrington described a population of spinal cord interneurons (INs) that connect multiple spinal cord segments and participate in complex or 'long' motor reflexes. These neurons were subsequently termed propriospinal neurons (PNs) and are known to play a crucial role in motor c...
journal_title：Neuropharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.neuropharm.2011.01.016
更新日期：2011-04-01 00:00:00
abstract：:Time-effects of morphine, methadone, meperidine and pentazocine upon locomotor activity were investigated in naive and in post-dependent rats. Dependence was induced by daily injection of 20 mg/kg (i.p.) of morphine for 30 days. Tests were run starting from 1 month after withdrawal from morphine. Morphine produced a g...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(85)90041-3
更新日期：1985-09-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2013.03.009
更新日期：2013-08-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(84)90141-2
更新日期：1984-06-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1016/0028-3908(94)90082-5
更新日期：1994-03-01 00:00:00
abstract：:Mice deficient in the microtubule stabilizing protein STOP (stable tubule only polypeptide) show synaptic plasticity anomalies in hippocampus, dopamine hyper-reactivity in the limbic system and severe behavioral deficits. Some of these disturbances are alleviated by long-term antipsychotic treatment. Therefore, this m...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2007.03.015
更新日期：2007-06-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2006.10.012
更新日期：2007-03-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2005.12.008
更新日期：2006-06-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(90)90070-8
更新日期：1990-06-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(93)90156-w
更新日期：1993-04-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(95)00180-8
更新日期：1996-02-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2014.05.009
更新日期：2015-02-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
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更新日期：1985-06-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
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更新日期：2016-10-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(96)00162-1
更新日期：1997-01-01 00:00:00
abstract：:Using the isoquinoline carboxamide derivative, PK 11195 as selective ligand, the binding properties of peripheral benzodiazepine binding sites were compared on platelets of alcoholics and non-alcoholic, healthy controls. When compared to controls, alcoholics during prolonged ethanol consumption show a significant redu...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(88)90155-4
更新日期：1988-04-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(96)00094-9
更新日期：1996-01-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(01)00112-5
更新日期：2001-11-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2011.12.023
更新日期：2012-07-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.neuropharm.2013.04.031
更新日期：2014-01-01 00:00:00
abstract：:Neuropeptide S (NPS) is a peptide recently recognized to be present in the CNS, and believed to play a role in vigilance and mood control, as behavioral studies have shown it promotes arousal and has an anxiolytic effect. Although NPS precursor is found in very few neurons, NPS positive fibers are present throughout t...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2017.06.025
更新日期：2017-11-01 00:00:00
abstract：:In the solitary tract nucleus, neuronal responsiveness to synaptic input from peripheral afferent fibres has been found to decrease as the frequency of that input is increased. The present study investigated the possibility that glycine and gamma-aminobutyric acid (GABA) are (1) involved in this phenomenon of "frequen...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(91)90149-6
更新日期：1991-03-01 00:00:00
abstract：:alpha(2)-ARs regulate brain monoaminergic function by inhibiting neuronal firing and release of monoamine neurotransmitters, noradrenaline (NA), serotonin (5-HT) and dopamine (DA). Both alpha(2A)- and alpha(2C)-AR inhibit monoamine release in vitro in brain slices, but the in vivo roles of individual alpha(2)-AR subty...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(03)00080-7
更新日期：2003-06-01 00:00:00
abstract：:Parasympathetic preganglionic cardiac vagal neurons (CVNs) which dominate the control of heart rate are located within the nucleus ambiguus (NA). Serotonin (5HT), and in particular 5HT2 receptors, play an important role in cardiovascular function in the brainstem. However, there is a lack of information on the mechani...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2008.02.016
更新日期：2008-06-01 00:00:00
