Abstract：
:The properties of central ATP-mediated synaptic currents were studied using whole-cell patch-clamp recording in rat medial habenula slices. Release was shown to be calcium dependent with a Hill coefficient of approximately 2. The voltage dependence of synaptic current amplitudes was approximately linear. Some reduction of the synaptic current amplitudes was observed at 10 mM extracellular calcium, suggesting calcium block/permeability of the channels. This was confirmed by observation of current-voltage reversal potentials in different calcium concentrations. We estimate that the channels underlying half the synapses showed a negligible calcium permeability. In the other four out of eight synapses the results suggest a very high calcium permeability with an estimated PCa/PCs of > 10. Thus, at -70 mV, in 1 mM calcium, more than 15% of the ATP-mediated synaptic current is estimated to be carried by calcium, but only at synapses with calcium-permeable channels. Net current through these synaptic channels is also controlled by the voltage dependence of synaptic current decay time constants (increasing e-fold for 158 mV depolarization) and by a strong dependence of transmitter release on the frequency of stimulation of the presynaptic neurone, with failure rates increasing 3-fold as stimulation rates were increased from 1 to 10 Hz.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Edwards FA,Robertson SJ,Gibb AJdoi
10.1016/s0028-3908(97)00127-5subject
Has Abstractpub_date
1997-09-01 00:00:00pages
1253-68issue
9eissn
0028-3908issn
1873-7064pii
S0028390897001275journal_volume
36pub_type
杂志文章abstract：:The effects of several stress procedures on the release of 5-HT in the dorsal and median raphe nuclei (DRN and MRN, respectively) and in forebrain structures of the rat brain innervated by both nuclei have been studied using intracerebral microdialysis. Handling for 30 sec, a saline injection and forced swimming for 5...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(97)00048-8
更新日期：1997-04-01 00:00:00
abstract：:Orexin-A, -B play a crucial role in arousal and feeding by activating two G-protein-coupled receptors: orexin receptor 1 (OX1R) and orexin receptor 2 (OX2R). Orexins, along with orexin receptors, are expressed in retinal neurons, and they have been shown to differentially modulate excitatory AMPA receptors of amacrine...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2018.01.007
更新日期：2018-05-01 00:00:00
abstract：:A micropipette-system was used to investigate intracranial self-injection of morphine in the rat. The system consisted of a glass micropipette (tip dia 5 microns) connected by flexible tubing and a swivel to a pressure source. Using nose-poking through a hole in one wall of the cage as the operant, rats self-injected ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(89)90112-3
更新日期：1989-10-01 00:00:00
abstract：:We examined the effects of two protein tyrosine phosphatase inhibitors on the induction of synaptic plasticity in CA1 slices of rat hippocampus. Field potential recordings were made in stratum radiatum in response to stimulation of the Schaffer collateral afferents. Bath application of the tyrosine phosphatase inhibit...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(00)00087-3
更新日期：2000-09-01 00:00:00
abstract：:Mice were injected bilaterally into the septum with 6-hydroxydopamine and 6 weeks later the hippocampi were assayed for activity of choline acetyltransferase, muscarinic receptor binding capabilities and for formation of inositol phosphate in response to direct (carbachol) or presynaptically elicited (K+) stimulation ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(93)90090-p
更新日期：1993-02-01 00:00:00
abstract：:The effects of various benzodiazepine receptor ligands on the GABA autoreceptor have been studied in slices of cerebral cortex of the rat. The GABAA receptor agonist muscimol inhibited the K+-stimulated release of [3H]GABA with a pIC25 of 7.65 +/- 0.11. This effect was antagonised by the GABAA receptor antagonist bicu...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(88)90059-7
更新日期：1988-10-01 00:00:00
abstract：:Serotonergic hallucinogens produce profound changes in perception, mood, and cognition. These drugs include phenylalkylamines such as mescaline and 2,5-dimethoxy-4-methylamphetamine (DOM), and indoleamines such as (+)-lysergic acid diethylamide (LSD) and psilocybin. Despite their differences in chemical structure, the...
journal_title：Neuropharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.neuropharm.2011.01.017
更新日期：2011-09-01 00:00:00
abstract：:Animal models of alcohol drinking and dependence are a critical resource for understanding the neurobiological mechanisms and development of more effective treatments for alcohol use disorder (AUD). Because most rat strains do not voluntarily consume large enough quantities of alcohol to adequately model heavy drinkin...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2020.108393
更新日期：2021-02-15 00:00:00
abstract：:NMDA receptors (NMDAr) are widely expressed throughout the brain on many cell types, and loss of function of these receptors (ie: NMDAr hypofunction) is a candidate mechanism explaining working memory impairment in schizophrenia. However, the cellular source driving the working memory deficits caused by NMDAr hypofunc...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2020.108103
更新日期：2020-07-01 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：:Central administration of corticotropin-like peptides generally blocks the analgesic action of opiate ligands, yet it is unclear whether this is due to an independent hyperalgesic action of corticotropin or to some other mechanism. Single cells in the ventromedial medulla of the anaesthetized rat were characterized as...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(87)90130-4
更新日期：1987-12-01 00:00:00
abstract：:FK1706, a derivative of FK506, is a non-immunosuppressive immunophilin ligand with significant neurotrophic activity mediated via FKBP-52 and the RAS/RAF/MAPK signaling pathway. Here, we tested the effect of FK1706 on painful diabetic neuropathy in rat model of diabetes induced by streptozotocin (STZ). FK1706 ameliora...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2008.07.048
更新日期：2008-12-01 00:00:00
abstract：:Our understanding of the role GABA(C) receptors play in the central nervous system is limited due to a lack of specific ligands. Here we describe the pharmacological effects of (+/-)-cis-3- and (+/-)-trans-3-(aminocyclopentyl)methylphosphinic acids ((+/-)-cis- and (+/-)-trans-3-ACPMPA) as novel ligands for the GABA(C)...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2006.09.014
更新日期：2007-03-01 00:00:00
abstract：:This study analyzed and compared the effects of EGCG treatment on the expression of NTFs and NTF receptors expression in the sciatic nerve and the L3-L6 spinal cord segments at the early phase of regeneration following sciatic nerve crush injury. Analysis of BDNF, GDNF and NT3 neurotropic factors and Trk-B, Trk-C and ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2015.10.029
更新日期：2016-03-01 00:00:00
abstract：:The effects of short- and long-term exposure of cells to elevated cyclic adenosine monophosphate (c-AMP), using dibutyryl-c-AMP, 8-bromo-c-AMP, cholera toxin or forskolin, or cyclic guanosine monophosphate (c-GMP), using dibutyryl-c-GMP or 8-bromo-c-GMP, on the activity and expression of the noradrenaline transporter ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(00)00201-x
更新日期：2001-03-01 00:00:00
abstract：:A once daily injection to rats of triiodothyronine (T3; 100 micrograms/kg s.c.) for 10 days enhanced the locomotor responses of rats pretreated with tranylcypromine (5 mg/kg) to an injection into the nucleus accumbens of dopamine (5 micrograms bilaterally), when tested 24 hr after the last T3 administration. This trea...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(82)90156-3
更新日期：1982-02-01 00:00:00
abstract：:We examined the pharmacological properties of 3-methyl-aminothiophene dicarboxylic acid (3-MATIDA) by measuring second messenger responses in baby hamster kidney cells stably transfected with mGlu1a, mGlu2, mGlu4a or mGlu5a receptors and ionotropic glutamate receptor agonist-induced depolarizations in mouse cortical w...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(02)00033-3
更新日期：2002-05-01 00:00:00
abstract：:SKF 83959 that has a unique antiparkinson profile in animal models of Parkinson's disease is an in vitro dopamine D1 antagonist of receptors coupled to adenylyl cyclase. We hypothesized that SKF 83959, among others, interacts with dopamine D1 receptors coupled to adenylyl cyclase in the nucleus accumbens and the prefr...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(01)00169-1
更新日期：2002-02-01 00:00:00
abstract：:Treatment-related sexual dysfunction is a common side effect of antidepressants and contributes to patient non-compliance or treatment cessation. However, the multimodal antidepressant, vortioxetine, demonstrates low sexual side effects in depressed patients. To investigate the mechanisms involved, sexual behavior was...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2017.04.017
更新日期：2017-07-15 00:00:00
abstract：OBJECTIVES:To explore the role of 5' adenosine monophosphate-activated protein kinase/sirtuin1-sirtuin3 (AMPK/SIRT1-SIRT3) signaling pathway in behavioral and neuroinflammation/oxidative stress alterations in unpredictable chronic mild stress (UCMS) model mice. METHODS:Male ICR mice weighing 20-22 g were used in this ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2019.107925
更新日期：2020-03-15 00:00:00
abstract：:The incretins glucagon-like peptide 1 (GLP-1) and glucose dependent insulinotropic polypeptide (GIP) are growth factors that have shown neuroprotective effects in animal models of Parkinson's and Alzheimer's disease. In addition, the GLP-1 mimetic exendin-4 has shown protective effects in a clinical trial in Parkinson...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2017.02.013
更新日期：2017-05-01 00:00:00
abstract：:The possible synergism between caffeine and muscarinic antagonists to inhibit haloperidol-induced catalepsy was investigated with the bar test in rats. Pretreatment with low doses of caffeine (1-3 mg/kg), a non-selective adenosine antagonist, dose dependently reduced the intensity and increased the onset latency of ca...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(03)00202-8
更新日期：2003-09-01 00:00:00
abstract：:Hypoxic-ischemic encephalopathy (HI) accounts for the majority of developmental, motor and cognitive deficits in children, leading to life-long neurological impairments. Since the plasmamembrane sodium/calcium exchanger (NCX) plays a fundamental role in maintaining ionic homeostasis during adult brain ischemia, in the...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2018.03.017
更新日期：2018-06-01 00:00:00
abstract：:Hippocampal Long-Term Potentiation (LTP) is facilitated by BDNF, through the activation of tropomyosin-related kinase B (TrkB) receptors. However, an influence of BDNF upon Long-Term Depression (LTD) was also shown. The present work aimed to further evaluate the effect of BDNF and TrkB receptors upon CA1 hippocampal L...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2013.12.010
更新日期：2014-04-01 00:00:00
abstract：:Slow excitatory postsynaptic currents (EPSCs) mediated by metabotropic glutamate receptors (mGlu receptors) have been reported in several neuronal subtypes, but their presence in hippocampal pyramidal neurons remains elusive. Here we find that in CA1 pyramidal neurons a slow EPSC is induced by repetitive stimulation w...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2016.08.028
更新日期：2017-03-15 00:00:00
abstract：:Remifentanil is commonly used clinically for perioperative pain relief, but it may induce postoperative hyperalgesia. Low doses of ketamine have remained a common choice in clinical practice, but the mechanisms of ketamine have not yet been fully elucidated. In this study, we examined the possible effects of ketamine ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2019.107783
更新日期：2020-01-01 00:00:00
abstract：:The majority of the fibroblast growth factor receptor 1-serotonin 1 A receptor (FGFR1-5-HT1AR) heterocomplexes in the hippocampus appeared to be located mainly in the neuronal networks and a relevant target for antidepressant drugs. Through a neurochemical and electrophysiological analysis it was therefore tested in t...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2020.108070
更新日期：2020-06-15 00:00:00
abstract：:The aim of this study was to investigate the facilitatory effects of subanalgesic or low doses of different drugs (acetylsalicylic acid, ibuprofen and morphine) on the antinociceptive responses induced by the endogenous opioid peptides, enkephalins, protected from their catabolism by the dual enkephalin-degrading enzy...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(01)00077-6
更新日期：2001-09-01 00:00:00
abstract：:Recently it has been reported that "I(f) channel blockers", which block the hyperpolarization-activated inward current (I(f)) in heart sino atrial node cells, also block the hyperpolarization-activated inward current (I(h)) in other tissues. Here we compared the effects of one of these agents, ZD7288 [4-(N-ethyl-N-phe...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(99)00207-5
更新日期：2000-04-27 00:00:00
abstract：:The kinetics of synaptic currents is largely determined by the postsynaptic receptor gating and the concentration time course of synaptic neurotransmitter. While the analysis of current responses to rapid agonist application provides the means to study the ligand-gated receptor gating, no direct tools are available to...
journal_title：Neuropharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.neuropharm.2004.07.003
更新日期：2004-12-01 00:00:00
