Abstract:
:LY354740 is a potent and selective mGlu2/3 receptor agonist with activity in models of psychiatric disorders (anxiety, psychosis), and early clinical studies in anxiety patients. However, the specific receptor subtypes and brain regions which mediate mGlu2/3 receptor agonist pharmacology/efficacy are not well understood. Here we investigate the effects of deleting mGlu2 or mGlu3 receptors on basal and LY354740-regulated c-Fos expression in mouse brain using mGlu2 or mGlu3 knockout mice. Consistent with our earlier findings, LY354740 administration (20 mg/kg, i.p.) to wild-type mice increased c-Fos expression in specific limbic (central amygdala, bed nucleus of the stria terminalis, midline thalamic nuclei) and non-limbic (thalamic dorsolateral geniculate nucleus, superior colliculus, Edinger-Westphal) structures, while modestly suppressing hippocampal c-Fos expression. The LY354740-induced increases in c-Fos expression in all the above regions were abolished by mGlu2, but not mGlu3, receptor deletion. Interestingly, basal c-Fos expression was significantly increased in the hippocampus of mGlu3, but not mGlu2, receptor knockouts compared to wild-type mice. Moreover, this increase was not suppressed by LY354740, such that in the CA3 region LY354740 now increased c-Fos expression in the mGlu3 knockouts. These results demonstrate that the LY354740-induced increases of c-Fos expression in specific brain regions, including the central and extended amygdala are specifically linked to mGlu2 receptors, and LY354740 suppressions of neuronal activity in the hippocampus are linked to mGlu3 receptors.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Linden AM,Baez M,Bergeron M,Schoepp DDdoi
10.1016/j.neuropharm.2006.03.014subject
Has Abstractpub_date
2006-08-01 00:00:00pages
213-28issue
2eissn
0028-3908issn
1873-7064pii
S0028-3908(06)00071-2journal_volume
51pub_type
杂志文章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
abstract::The group II metabotropic glutamate receptor (mGluR) antagonists LY341495 and LY366457 were profiled for their effects on locomotor activity in mice. Both compounds significantly increased locomotor activity. Observational studies showed that rearing was also selectively increased. LY366457-induced hyperactivity was s...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(03)00232-6
更新日期:2003-10-01 00:00:00
abstract::The study investigated the interaction between phencyclidine (PCP) and morphine in affecting the levels of met-enkephalin, dopamine, DOPAC and HVA in mice. Morphine 5 mg/kg alone and PCP 10 mg/kg alone failed to change the levels of met-enkephalin in the midbrain and striatum. However, PCP in combination with morphine...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(85)90016-4
更新日期:1985-08-01 00:00:00
abstract::Selective central benzodiazepine agonists, such as clonazepam, are known to modify serotonin and 5-hydroxyindoleacetic content in the brain. In order to further study the effect of this benzodiazepine on serotonin turnover rate, rats received clonazepam, 10 mg/kg for 10 days, and the concentrations of serotonin and 5-...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(95)00103-d
更新日期:1995-10-01 00:00:00
abstract::In isolation-reared mice, social encounter stimulation induces locomotor hyperactivity and activation of the dorsal raphe nucleus (DRN), suggesting that dysregulation of dorsal raphe function may be involved in abnormal behaviors. In this study, we examined the involvement of dorsal raphe GABAergic dysregulation in th...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2015.09.013
更新日期:2016-02-01 00:00:00
abstract::Brief exposure to an elevated plus-maze has been shown to induce antinociception in male mice, a reaction that is not attenuated by manipulations of opiate receptors but which is fully blocked by diazepam. The present study examined the effects of the benzodiazepine receptor antagonist, flumazenil (5-20 mg/kg), on beh...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(91)90021-3
更新日期:1991-12-01 00:00:00
abstract::Retinal bipolar cells receive glutamatergic transmission from photoreceptors and mediate a key process in segregating visual signals into ON-center and OFF-center pathways. The segregation of ON responses involves a G protein-coupled metabotropic glutamate receptor (mGluR). The mGluR6 subtype is expressed restrictedly...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(96)00167-0
更新日期:1997-02-01 00:00:00
abstract::3,4-Methlylenedioxymethamphetamine (MDMA) administration (4 x 15 mg/kg) on a single day has been shown to cause path integration deficits in rats. While most animal experiments focus on single binge-type models of MDMA use, many MDMA users take the drug on a recurring basis. The purpose of this study was to compare th...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2008.07.006
更新日期:2008-12-01 00:00:00
abstract::The role of neurally born acetylcholine in the central modulation of cardiovascular short-term variability was assessed using a pharmacological probe physostigmine, a cholinesterase inhibitor that can act centrally also. Experiments were performed in instrumented conscious rats. Equidistant sampling at 20 Hz of systol...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2005.12.009
更新日期:2006-06-01 00:00:00
abstract::The role of AMPA receptors in cochlear synaptic transmission and excitotoxicity was investigated by comparing the actions of a selective AMPA antagonist GYKI 53784 (LY303070) with additional AMPA/kainate antagonists, GYKI 52466 and DNQX, and the NMDA antagonist, D-AP5, in several electrophysiological, neurotoxicologic...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00069-1
更新日期:2000-08-23 00:00:00
abstract::The effects of a stimulation of dopamine D1 receptors by using (+/-)SKF 38393 on the cortical EEG in rats which were chronically implanted with electrodes were studied. Administration of SKF 38393 (3 or 9 mg/kg, s.c.) produced alterations suggesting an arousal in the EEG: the power in all of the frequency bands decrea...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(93)90175-3
更新日期:1993-05-01 00:00:00
abstract::Neuronal nicotinic acetylcholine receptors (nAChR) have been suggested to play a role in a variety of modulatory and regulatory processes, including neuroprotection. Here we have characterized the neuroprotective effects of nicotine against an excitotoxic insult in primary hippocampal cultures. Exposure of hippocampal...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00127-1
更新日期:2000-10-01 00:00:00
abstract::Many studies have described potent effects of BDNF, 17β-estradiol or androgen on hippocampal synapses and their plasticity. Far less information is available about the interactions between 17β-estradiol and BDNF in hippocampus, or interactions between androgen and BDNF in hippocampus. Here we review the regulation of ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.04.029
更新日期:2014-01-01 00:00:00
abstract::The effects of thyrotropin-releasing hormone (TRH) were examined on the monosynaptic reflex and on the activity of motoneurons in the spinal cord of the neonatal rat to elucidate the mechanism of action of TRH and its ability to reverse the spinal depression caused by phencyclidine and ketamine. Phencyclidine (2-32 mi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(88)90061-5
更新日期:1988-10-01 00:00:00
abstract::The acute effects of simvastatin lactone (lipophilic) and simvastatin acid (hydrophilic) on transient focal ischemia were assessed using the isolated guinea pig brain maintained in vitro by arterial perfusion. This new model of cerebral ischemia allows the assessment of the very early phase of the ischemic process, wi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2011.01.003
更新日期:2011-05-01 00:00:00
abstract::It has been shown that endogenous adenosine 5'-triphosphate (ATP) as well as its exogenously applied structural analogue, 2-methylthio ATP (2-MeSATP), facilitate the release of dopamine from axon terminals in the rat nucleus accumbens (NAc) by activating ATP-sensitive P2 receptors. In the present study, reversed micro...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(01)00033-8
更新日期:2001-06-01 00:00:00
abstract::N-methyl-D-aspartate (NMDA) receptors play several essential roles in the physiology and pathophysiology of the brain. Their activation results in long-term changes in glutamatergic synaptic transmission in several brain areas, but excessive activation of these receptors induces neurotoxicity. Some of NMDA-mediated ac...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2006.03.025
更新日期:2006-08-01 00:00:00
abstract::The effect of varying the ratio of extraction volume to tissue weight (EVR) on the apparent concentration of histamine (HA) in the hypothalamus of the rat was examined. Increasing the weight of tissue (by pooling 1, 2 or 3 hypothalami), in a constant extraction volume, resulted in progressive decreases in apparent con...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(87)90263-2
更新日期:1987-08-01 00:00:00
abstract::Prenatal exposure to the CB1 receptor agonist (R)-(+)-[2,3-dihydro-5-methyl-3-(4-morpholinylmethyl)-pyrrolo[1,2,3-de]-1,4-benzoxazinyl]-(1-naphthalenyl)methanone) mesylate (WIN) at a daily dose of 0.5 mg/kg, and Delta9-tetrahydrocannabinol (Delta9-THC) at a daily dose of 5 mg/kg, reduced dialysate glutamate levels in ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2007.05.019
更新日期:2007-09-01 00:00:00
abstract::Stressful life events and chronic stressors have been associated with escalations in alcohol drinking. Stress exposure leads to the secretion of glucocorticoids (cortisol in the human; corticosterone (CORT) in the rodent). To model a period of heightened elevations in CORT, the present work assessed the effects of chr...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.04.036
更新日期:2013-09-01 00:00:00
abstract::Maternal behavior and anxiety are potently modulated by the brain corticotropin-releasing factor (CRF) system postpartum. Downregulation of CRF in limbic brain regions is essential for appropriate maternal behavior and an adaptive anxiety response. Here, we focus our attention on arguably the most important brain regi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.02.019
更新日期:2018-05-01 00:00:00
abstract::Because of the claim that ibogaine suppresses the symptoms of "narcotic withdrawal" in humans, the effect of ibogaine on naltrexone-precipitated withdrawal signs in morphine-dependent rats was assessed. Morphine was administered subcutaneously through implanted silicone reservoirs for 5 days. Ibogaine (20, 40 or 80 mg...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(92)90089-8
更新日期:1992-05-01 00:00:00
abstract::The effect of trans-(+/-)-3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl) cyclohexyl]-benzene-acetamide methane sulfonate (U-50,488H), a kappa-opiate agonist-induced tolerance and abstinence on 5-HT1A receptors was determined in regions of the brain and spinal cord of the rat. The administration of U-50,488H (25 mg/kg, i....
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(92)90052-q
更新日期:1992-12-01 00:00:00
abstract::One proposed factor contributing to the increased frequency of opioid overdose deaths is the emergence of novel synthetic opioids, including illicit fentanyl and fentanyl analogues. A treatment strategy currently under development to address the ongoing opioid crisis is immunopharmacotherapies or opioid-targeted vacci...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2019.107730
更新日期:2019-11-01 00:00:00
abstract::Neurogenesis requires the balance between the proliferation of newly formed progenitor cells and subsequent death of surplus cells. RT-PCR and immunocytochemistry demonstrated the presence of P2X7 receptor mRNA and immunoreactivity in cultured neural progenitor cells (NPCs) prepared from the adult mouse subventricular...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.05.017
更新日期:2013-10-01 00:00:00
abstract::Radioligand binding assays were used to demonstrate the presence of alpha 1, alpha 2 and beta receptors in rat spinal cord. Specific and saturable binding was exhibited for [3H]-WB 4101 (alpha 1), [3H]-aminoclonidine (alpha 2) and [3H]-dihydroalprenolol (beta). Binding was of high affinity and the total number of bind...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(82)90162-9
更新日期:1982-02-01 00:00:00
abstract::Nicotinic receptors containing the alpha7 gene product are among the most abundant in the nervous system. Because of their widespread distribution and high relative permeability to calcium, the receptors regulate a diverse array of cellular events. On chick ciliary neurons the receptors are concentrated on somatic spi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00132-5
更新日期:2000-10-01 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
abstract::Efficient transcytosis across the blood-brain-barrier (BBB) is an important strategy for accessing drug targets within the central nervous system (CNS). Despite extensive research the number of studies reporting successful delivery of macromolecules or macromolecular complexes to the CNS has remained very low. In orde...
journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2016.08.025
更新日期:2017-07-01 00:00:00
abstract::In this study we investigate the presence, modulation and biological function of P2 receptors and extracellular ATP in cultured cerebellar granule neurons. As we demonstrate by RT-PCR and western blotting, both P2X and P2Y receptor subtypes are expressed and furthermore regulated as a function of neuronal maturation. ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(01)00197-6
更新日期:2002-03-01 00:00:00