Abstract：
:Trace amines are biological compounds that are still awaiting identification of their role in neuronal function. Using intracellular electrophysiological recordings, we investigated the depressant action of two trace amines (beta-phenylethylamine and tyramine) on the firing activity of dopaminergic neurons of the substantia nigra pars compacta and ventral tegmental area. This inhibition was due to a membrane hyperpolarisation that was blocked by the D2 dopamine receptor antagonist sulpiride and was not potentiated by the dopamine-uptake blocker, cocaine. Inhibition of the dopamine transporter did not mediate the effects of trace amines, because unlike cocaine, trace amines did not potentiate the inhibitory responses to exogenously applied dopamine. The inhibitory actions of beta-phenylethylamine and tyramine were present in reserpine-treated animals but were abolished when the dopamine-synthesis inhibitor carbidopa was applied. Our data suggest that trace amines cause an indirect activation of dopamine autoreceptors, by an increased efflux of newly synthesised dopamine. The inhibition of dopaminergic activity by trace amines may relate to their involvement in neuronal processes linked to drug addiction, schizophrenia, attention deficit hyperactive disorders and Parkinson's disease.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Geracitano R,Federici M,Prisco S,Bernardi G,Mercuri NBdoi
10.1016/j.neuropharm.2003.11.031subject
Has Abstractpub_date
2004-05-01 00:00:00pages
807-14issue
6eissn
0028-3908issn
1873-7064pii
S0028390803004672journal_volume
46pub_type
杂志文章abstract：:Recent observations from synaptosome preparations have questioned the tetrodotoxin (TTX) insensitivity of nicotine-evoked release in the striatum, a characteristic previously considered diagnostic of presynaptically located nicotinic acetylcholine receptors (nAChRs). Therefore, we have undertaken a comparison of nicot...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(96)00117-7
更新日期：1996-01-01 00:00:00
abstract：:The activity of tianeptine (2.5 and 5.0 mg/kg twice daily, i.p.) and of sertraline (5.0 mg/kg, twice daily, i.p.) were assessed in three animal models of depression. In the Behavioural Despair Test, acute treatment with sertraline or tianeptine (5.0 mg/kg) significantly reduced the immobility time. In the olfactory bu...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(94)90160-0
更新日期：1994-08-01 00:00:00
abstract：:We have examined the effects of a variety of classical and atypical neuroleptic drugs on mitochondrial NADH ubiquinone oxido-reductase (complex I) activity. Sagittal slices of mouse brain incubated in vitro with haloperidol (10 nM) showed time- and concentration-dependent inhibition of complex I. Similar concentration...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(98)00215-9
更新日期：1999-04-01 00:00:00
abstract：:The group III metabotropic glutamate (mGlu) receptors mGlu7 and mGlu8 are receiving increased attention as potential novel therapeutic targets for anxiety disorders. The effects mediated by these receptors appear to result from a complex interplay of facilitatory and inhibitory actions at different brain sites in the ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2012.05.025
更新日期：2013-03-01 00:00:00
abstract：:Melanin-concentrating hormone (MCH) is an orexigenic neuropeptide produced in the lateral hypothalamus and zona incerta that increases food intake. The neuronal pathways and behavioral mechanisms mediating the orexigenic effects of MCH are poorly understood, as is the extent to which MCH-mediated feeding outcomes are ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2020.108270
更新日期：2020-11-01 00:00:00
abstract：:Although there is evidence from in vitro studies to suggest that NO synthesis may be involved in the induction of hippocampal LTP, other in vitro studies and experiments conducted in vivo have provided conflicting results. In agreement with previous work conducted in this laboratory using an i.p. route of administrati...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(94)90040-x
更新日期：1994-11-01 00:00:00
abstract：:D-Tubocurarine is a potent competitive antagonist of two members of the ligand-gated ion channel family, the muscle-type nicotinic acetylcholine receptor (AChR) and serotonin type-3 receptor (5HT3R). We have used a series of analogs of D-tubocurarine to determine the effects of methylation, stereoisomerization and hal...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(98)00010-0
更新日期：1998-01-01 00:00:00
abstract：:Diabetic neuropathic pain remains an unmet clinical problem and is poorly relieved by conventional analgesics. N-methyl-D-aspartate (NMDA) receptors play an important role in central sensitization in neuropathic pain. Although NMDA antagonists are highly effective in reducing neuropathic pain, these agents cause sever...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2009.04.010
更新日期：2009-08-01 00:00:00
abstract：:Glibenclamide (GBC), a sulfonylurea receptor 1 blocker, emerges recently as a promising neuron protectant in various neurological disorders. This study aimed to determine whether GBC improves survival and neurological outcome of status epilepticus (SE). Male Sprague-Dawley rats successfully undergoing SE for 2.5 h (n ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2017.04.016
更新日期：2017-07-15 00:00:00
abstract：:Excitatory neurotransmission mediated by N-methyl-d-aspartate receptors (NMDARs) is fundamental to learning and memory and, when impaired, causes certain neurological disorders. NMDARs are heterotetrameric complexes composed of two GluN1 [NR1] and two GluN2(A-D) [NR2(A-D)] subunits. The GluN2 subunit is responsible fo...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2011.12.018
更新日期：2012-04-01 00:00:00
abstract：:Endocannabinoids are suggested to control pain, even though their clinical use is not fully validated and the underlying mechanisms are incompletely understood. To clarify the targets of endocannabinoid actions, we studied how activation of the endocannabinoid CB1 receptor (CB1R) affects neuronal responses in two in v...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2017.12.013
更新日期：2018-03-15 00:00:00
abstract：:Despite evidence from psychiatry and psychology clinics pointing to altered cognition and decision making following the consumption of cannabis, the effects of cannabis derivatives are still under dispute and the mechanisms of cannabinoid effects on cognition are not known. In this study, we used effort-based and dela...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2018.01.021
更新日期：2018-05-01 00:00:00
abstract：:The effects of (S)-4-amino-5-[(4,4-dimethylcyclohexyl)amino]-5-oxo-pentanoic acid ((S)CR 2249), a new chemical entity selected among a series of glutamic acid derivatives, were investigated on N-methyl-D-aspartate (NMDA)-evoked release of [3H]noradrenaline from rat hippocampal slices. (S)CR 2249 facilitated glycine-me...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(97)00092-0
更新日期：1997-08-01 00:00:00
abstract：:This study examined the role of cannabinoid CB1 receptors (CB1r) in aggressive behavior. Social encounters took place in grouped and isolated mice lacking CB1r (CB1KO) and in wild-type (WT) littermates. Cognitive impulsivity was evaluated in the delayed reinforcement task (DRT). Gene expression analyses of monoaminoox...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2013.07.013
更新日期：2013-12-01 00:00:00
abstract：:Clinical neuropathologic studies suggest that the selective vulnerability of hippocampal CA1 pyramidal projection neurons plays a key role in the onset of cognitive impairment during the early phases of Alzheimer's disease (AD). Disruption of this neuronal population likely affects hippocampal pre- and postsynaptic ef...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2013.10.018
更新日期：2014-04-01 00:00:00
abstract：:Metabotropic glutamate (mGlu) receptors in the basal ganglia motor loop may increase cell excitability (Group I) or modulate neurotransmitter release (Group I, II and III). Nigrostriatal tract degeneration in Parkinson's disease (PD) produces downstream pathological disturbances in glutamate and GABA transmission. The...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/s0028-3908(02)00090-4
更新日期：2002-08-01 00:00:00
abstract：:The purpose of the present studies was to investigate the behavioral and convulsant effects produced by the group I metabotropic glutamate receptor agonist (S)-3,5-dihydroxyphenylglycine (DHPG). Administered i.c.v. to mice, (S)-3,5-DHPG produced a behavioral syndrome consisting of scratching and/or facial grooming, tr...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2005.01.017
更新日期：2005-05-01 00:00:00
abstract：:The effects of 5-hydroxytryptamine (5-HT) on neuronal excitability, evaluated as depolarization-induced firing rate, and on amino acid release, measured as electrically-evoked [(3)H]GABA and [(3)H]d-aspartate efflux, were investigated in rat primary cortical neuronal cultures. 5-HT displayed a concentration-dependent,...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2006.10.017
更新日期：2007-03-01 00:00:00
abstract：:The present study, using the in vivo intracerebral microdialysis method, investigated the role of different serotonin receptor subtypes in the control of dopamine (DA) release exerted by serotonin (5-HT) in the striatum of halothane-anesthetized rats. Striatal dialysate DA content was reduced following the blockade of...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(94)00145-i
更新日期：1995-03-01 00:00:00
abstract：:Tetraethylammonium (TEA) (2.6 x 10(-3) M) potentiated the twitches of the indirectly- or directly-stimulated phrenic nerve diaphragm of the rat at 37 degrees C by prolonging the action potential of the sarcolemma, due to an inhibition of the repolarizing K+ current. With indirect stimulation, TEA caused a use-dependen...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(89)90137-8
更新日期：1989-06-01 00:00:00
abstract：:Nicotine stimulates the secretion of catecholamines from sympathetic nerve endings and adrenal medulla by acting on peripheral nicotinic cholinergic receptors. Nicotine is also a potent stimulant in the central nervous system but the significance of nicotinic receptors in brain in mediating cardiovascular and sympatho...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(90)90071-x
更新日期：1990-06-01 00:00:00
abstract：:Neural progenitor cells (NPCs) are found in the subventricular zone (SVZ) of the adult brain, a specialized neurogenic niche that might provide a substrate for brain repair after injury. The incomplete knowledge of how NPCs in the niche respond to local signals limits the use of cultured NPCs in the development of cel...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2008.05.021
更新日期：2008-09-01 00:00:00
abstract：:Selective serotonin (5-HT) re-uptake inhibitors (SSRIs) are commonly used in the treatment of generalized anxiety disorder in Humans. However, because only few animal models display overt anxious-like behavior, detailed preclinical studies of the anxiolytic properties of antidepressants are still lacking. Here, we stu...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2011.02.009
更新日期：2011-09-01 00:00:00
abstract：:Synaptic input activity affects the neurogenesis in adult hippocampal dentate gyrus (DG), while the input activity is potentiated by neurosteroid pregnenolone sulfate (PREGS). This study focused on exploring the effects of PREGS on the survival of newborn neurons in the DG of adult male mice. Proliferating cells were ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2010.11.017
更新日期：2011-02-01 00:00:00
abstract：:Deficits in social memory, cognition, and aberrant responses to stimulants are common among persons affected by schizophrenia and other conditions with a presumed developmental etiology. We previously found that expression changes in the adenosine metabolizing enzyme adenosine kinase (ADK) in the adult brain are assoc...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2018.08.025
更新日期：2018-10-01 00:00:00
abstract：:The effect of long term treatment with two tricyclic antidepressants on the sensitivity of 5-HT1B presynaptic heteroreceptors inhibiting acetylcholine (ACh) release was investigated. Groups of male rats received during 14 days either saline, citalopram (20 mg/kg), a serotonin (5-HT) uptake blocker, or tianeptine (2 x ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(94)90099-x
更新日期：1994-01-01 00:00:00
abstract：:Carbenoxolone (CBX), the succinyl ester of glycyrrhetinic acid, is an inhibitor of gap junctional intercellular communication. Systemic administration of CBX was able to decrease the seizure severity score and to increase the latency time of seizure onset in genetically epilepsy prone rats (GEPRs). In particular, intr...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2004.08.021
更新日期：2004-12-01 00:00:00
abstract：:Improgan is a chemical congener of the H2 antagonist cimetidine which shows the profile of a highly effective analgesic when administered directly into the CNS. Although the improgan receptor is unknown, improgan activates analgesic pathways which are independent of opioids, but may utilize cannabinoid mechanisms. To ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2006.04.003
更新日期：2006-09-01 00:00:00
abstract：:Histamine is an aminergic neurotransmitter, which regulates wakefulness, arousal and attention in the central nervous system. Histamine receptors have been the target of efforts to develop pro-cognitive drugs to treat disorders such as Alzheimer's disease and schizophrenia. Cognitive functions including attention are ...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/j.neuropharm.2017.03.003
更新日期：2017-05-15 00:00:00
abstract：:gamma-Aminobutyric acid (GABA, half-maximal inhibitory concentration, IC50 = 9.9 microM) and (-)-baclofen (IC50 = 4.5 microM) but not 10(-4) M muscimol, exerted a presynaptic inhibitory effect on cholinergic transmission in field-stimulated guinea-pig taenia coli preparations, in vitro. The antagonism by 10(-5) M (1S,...
journal_title：Neuropharmacology
pub_type： 杂志文章
doi：10.1016/0028-3908(87)90012-8
更新日期：1987-11-01 00:00:00
