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 the abnormal behaviors of isolation-reared mice. We also studied an epigenetic mechanism underlying abnormalities of the dorsal raphe GABAergic system. Both mRNA and protein levels of GABA(B1a), a GABA(B) receptor subunit, were increased in the DRN of isolation-reared mice, compared with these levels in group-reared mice. In contrast, mRNA levels for other GABAergic system-related genes (GABA(A) receptor α1, β2 and γ2 subunits, GABA(B) receptor 1b and 2 subunits, and glutamate decarboxylase 67 and 65) were unchanged. Intra-DRN microinjection of 0.06 nmol baclofen (a GABA(B) receptor agonist) exacerbated encounter-induced hyperactivity and aggressive behavior, while microinjection of 0.3 nmol phaclofen (a GABA(B) receptor antagonist) attenuated encounter-induced hyperactivity and aggressive behavior in isolation-reared mice. Furthermore, microinjection of 0.06 nmol baclofen elicited encounter-induced hyperactivity in group-reared mice. Neither baclofen nor phaclofen affected immobility time in the forced swim test and hyperactivity in a novel environment of isolation reared mice. Bisulfite sequence analyses revealed that the DNA methylation level of the CpG island around the transcription start site (TSS) of GABA(B1a) was decreased in the DRN of isolation-reared mice. Chromatin immunoprecipitation analysis showed that histone H3 was hyperacetylated around the TSS of GABA(B1a) in the DRN of isolation-reared mice. These findings indicate that an increase in dorsal raphe GABA(B1a) expression via epigenetic regulation is associated with abnormal responses to social stimulation such as encounter-induced hyperactivity and aggressive behavior in isolation-reared mice.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Araki R,Hiraki Y,Nishida S,Kuramoto N,Matsumoto K,Yabe Tdoi
10.1016/j.neuropharm.2015.09.013subject
Has Abstractpub_date
2016-02-01 00:00:00pages
1-12eissn
0028-3908issn
1873-7064pii
S0028-3908(15)30105-2journal_volume
101pub_type
杂志文章abstract::Inhibition of calcium-evoked [3H]ACh release by different classes of calcium channel blockers was compared among calcium-naive synaptosomes from chick, frog and rat forebrain tissues. In all three species, [3H]ACh release was insensitive to nifedipine (0.03-3 microM) but was completely inhibited by cadmium (IC50 range...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(92)90181-n
更新日期:1992-03-01 00:00:00
abstract::Serotonin (5-HT) modulates the hypothalamic-pituitary-adrenal (HPA) axis response to stress. We examined the effect of chronic restraint stress (CRS; 20 min/day) as compared to control (CTRL) conditions for 14 days, on: 1) restraint-induced ACTH and corticosterone (CORT) secretion in rats pretreated with vehicle or SB...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.03.013
更新日期:2013-08-01 00:00:00
abstract::Nitric oxide modulates pain development. However, there is no evidence on the effect of nitroxyl (HNO/NO⁻) in nociception. Therefore, we addressed whether nitroxyl inhibits inflammatory hyperalgesia and its mechanism using the nitroxyl donor Angeli's salt (AS; Na₂N₂O₃). Mechanical hyperalgesia was evaluated using a mo...
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
abstract::Adinazolam (ADI) is a new benzodiazepine with anxiolytic and antidepressant properties. To assess its effects on the acute stress response, rats were given a single intraperitoneal injection of 2.5 or 5.0 mg/kg of ADI and stressed for 1 hr by restraint. Neither dose of ADI had any effect on heart rate, blood pressure ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(92)90157-k
更新日期:1992-01-01 00:00:00
abstract::Serotonin (5-HT)1A and σ1 receptors have been implicated in psychiatric disorders. We previously found that combined 5-HT reuptake inhibition and σ1 receptor activation has a synergistic effect on prefrontal dopaminergic transmission in adrenalectomized/castrated mice lacking circulating steroid hormones. In the prese...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.06.026
更新日期:2013-12-01 00:00:00
abstract::Guinea-pigs, chronically exposed to simulated high altitude of 6000 m, showed alterations in some, but not all, neurotransmitter-receptor systems. Thus, peripheral (cardiac) beta-adrenergic receptors were decreased in numbers (Bmax) with an increased affinity although no alterations in endogenous cardiac norepinephrin...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(84)80013-1
更新日期:1984-02-01 00:00:00
abstract::Vesicular glutamate transporter 2 (VGLUT2)-which uptakes glutamate into presynaptic vesicles-is a fundamental component of the glutamate neurotransmitter system. Although several lines of evidence from genetically modified mice suggest a possible association of VGLUT2 with neuropathic pain, the specific role of VGLUT2...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2019.107869
更新日期:2020-03-01 00:00:00
abstract::Glioblastoma (GBM), the most aggressive brain tumor, has a poor prognosis due to the ease of migration to surrounding healthy brain tissue. Recent studies have shown that bradykinin receptors are involved in the progression of various cancers. However, the molecular mechanism and pathological role of bradykinin recept...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.10.033
更新日期:2019-01-01 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: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 monosynaptic reflex (MSR), recorded in vitro from the neonatal rat spinal cord, was depressed by 5-hydroxytryptamine (5-HT) and 5-HT receptor agonists. The results, together with our previous findings, indicate an apparent rank order of potency: 5-carboxamidotryptamine (5-CT) > sumatriptan > methysergide > 5-HT > ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(94)90188-0
更新日期:1994-07-01 00:00:00
abstract::Fast rhythmic activity in a frequency range between 20 and 40 Hz occurs in vitro in hippocampal area CA3 after activation of muscarinic receptors. Here we show that carbachol-induced rhythmic activity is modulated by serotonin (5-HT). Spectral analysis reveals that 5-HT (0.3-30 microM) decreases power, but not frequen...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2004.10.011
更新日期:2005-03-01 00:00:00
abstract::Cocaine produces a motor-stimulant response in part by its actions within the mesolimbic dopamine system. Repeated exposure to cocaine induces an augmented motor activity response which is termed behavioral sensitization, or reverse tolerance. Previous studies have suggested that sensitization may result from increase...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(93)90023-v
更新日期:1993-12-01 00:00:00
abstract::Addiction is associated with changes in synaptic plasticity mediated, in part, by alterations in the trafficking and stabilization of AMPA receptors at synapses within the nucleus accumbens. Exposure to cocaine can lead to protein kinase C-mediated phosphorylation of GluA2 AMPA subunits and this phosphorylation event ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2016.09.010
更新日期:2016-12-01 00:00:00
abstract::Dietary supplements containing polyunsaturated fatty acids (PUFA) are frequently taken for their perceived health benefits including a possible reduction in cognitive decline in the elderly. Here we report that pre-treatment with docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA) significantly reduced the survi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2008.02.003
更新日期:2008-05-01 00:00:00
abstract::Opiates addiction is characterized by its long-term persistence. In order to study the enduring changes in long-term memory in hippocampus, a pivotal region for this process, we used suppression subtractive hybridization to compare hippocampal gene expression in morphine and saline-treated rats. Animals were subjected...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2006.08.012
更新日期:2007-02-01 00:00:00
abstract::Following its binding to somatodendritic receptors, the neuropeptide neurotensin (NT) internalizes via a clathrin-mediated process. In the present study, we investigated whether NT also internalizes presynaptically using synaptosomes from rat neostriatum, a region in which NT1 receptors are virtually all presynaptic. ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(02)00054-0
更新日期:2002-06-01 00:00:00
abstract::Grip strength deficit is a measure of pain-induced functional disability in rheumatic disease. We tested whether this parameter and tactile allodynia, the standard pain measure in preclinical studies, show parallels in their response to analgesics and basic mechanisms. Mice with periarticular injections of complete Fr...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2017.07.029
更新日期:2017-10-01 00:00:00
abstract::Postsynaptic induction of long-term potentiation (LTP) at cortical and thalamic afferent synapses onto lateral amygdala (LA) projection neurons not only involves NMDA receptor activation, but also depends on L-type voltage-dependent calcium channels (L-VDCCs). Here we show, using whole cell recordings and two-photon C...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2006.07.010
更新日期:2007-01-01 00:00:00
abstract::Previous research shows Ouabain (OUA) to bind Na, K-ATPase, thereby triggering a number of signaling pathways, including the transcription factors NFᴋB and CREB. These transcription factors play a key role in the regulation of BDNF and WNT-β-catenin signaling cascades, which are involved in neuroprotection and memory ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.08.008
更新日期:2018-09-15 00:00:00
abstract::In PC12 cells, isosorbide dinitrate (ISDN) and S-nitrosol-acetyl-penicillamine (SNAP), both nitric oxide (NO) generators, attenuated K+ (56 mM)-stimulated release of dopamine. The attenuation was not observed with isosorbide, an ISDN analog lacking NO generating capacity. In this model, A23187 (Ca2+ ionophore), Bay K8...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(94)00151-h
更新日期:1995-02-01 00:00:00
abstract::The weaver defect results in a loss of baclofen- and adenosine-gated K+ conductance in the hippocampus of adult homozygous (wv/wv) mice. In addition, suppression of hippocampal epileptiform activity by baclofen is impaired (Jarolimek, W., Bäurle, J., Misgeld, U., 1998. Pore mutation in a G protein-gated inwardly recti...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(99)00089-1
更新日期:2000-01-04 00:00:00
abstract::Recent studies indicated that epigenetic modification, especially DNA methylation, play an important role in the persistence of addiction-related memory. 5-aza-2-deoxycytidine (5-aza), an inhibitor of DNA methyltransferases, was approved for clinical treatment. However, it is not clear whether 5-aza is involved in opi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2014.08.005
更新日期:2014-11-01 00:00:00
abstract::The effect of the D1 dopamine receptor antagonist SCH 23390 on sleep patterns was studied in rats by means of the electroencephalographic (EEG) technique. Haloperidol, an established D2 antagonist neuroleptic, was used for comparison. Over a very small dose range (0.003-0.03 mg/kg, subcutaneously), SCH 23390 significa...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(90)90138-h
更新日期:1990-10-01 00:00:00
abstract::At times of an aging population and increasing prevalence of neurodegenerative disorders, effective medical treatments remain limited. Therefore, there is an urgent need for new therapies to treat Alzheimer's disease (AD). Deep brain stimulation (DBS) is thought to address the neuronal network dysfunction of this diso...
journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2019.107860
更新日期:2020-07-01 00:00:00
abstract::Hemokinin-1 (HK-1) is a recently described mouse tachykinin peptide whose biological functions are not fully understood. To date, a unique receptor for HK-1 has not been identified. Recent studies suggest HK-1 may have a role in immunological functions, but there has been little characterization of HK-1's effects in t...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(03)00150-3
更新日期:2003-08-01 00:00:00
abstract::Ligand-gated ion channels play a role in mediating fast synaptic transmission for communication between neurons. However, the structural basis for the functional coupling of the binding and pore domains, resulting in channel opening, remains a topic of intense investigation. Here, a series of α7 nicotinic receptor mut...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2015.04.010
更新日期:2015-08-01 00:00:00
abstract::Morphine was shown to enhance dopamine release in the rat olfactory tubercle, nucleus accumbens, prefrontal cortex and pyriform cortex, as assessed by increased 3-methoxytyramine (3-MT) levels and 3-MT accumulation after pargyline treatment. In contrast, both 3-MT levels and accumulation after pargyline were unaffecte...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(91)90066-k
更新日期:1991-04-01 00:00:00
abstract::Propofol has been shown to attenuate brain injury in experimental ischemia models, but few studies have focused on the direct effect of propofol on mitochondrial dysfunction. In this study, we observed the effects of propofol on multiple aspects of mitochondrial dysfunction by studying the mitochondria isolated from r...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.08.029
更新日期:2014-02-01 00:00:00
abstract::The so-called generalized polarization (GP) of the fluorescent probe Laurdan and the steady-state fluorescence anisotropy of the probe diphenylhexatriene (DPH) and its phenylpropionic derivative (PA-DPH) were used to study the effects of several organochlorine insecticides of the chlorophenylethane, chlorinated cycloh...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(99)00194-x
更新日期:2000-04-03 00:00:00