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The Novel Melatonin Agonist Agomelatine (S20098) Is an Antagonist at 5-Hydroxytryptamine2C Receptors, Blockade of Which Enhances the Activity of Frontocortical Dopaminergic and Adrenergic Pathways
Agomelatine (S20098) displayed pKi values of 6.4 and 6.2 at native (porcine) and cloned, human (h)5-hydroxytryptamine (5-HT)2C receptors, respectively. It also interacted with h5-HT2B receptorsExpand
Serotonin (5-HT)2C receptors tonically inhibit dopamine (DA) and noradrenaline (NA), but not 5-HT, release in the frontal cortex in vivo
The novel, preferential 5-HT2C receptor agonist, Ro 60-0175 ((S)-2-(6-chloro-5-fluoroindol-1-yl)-1-methylethylamine) (2.5 mg,kg, s.c.), markedly suppressed dialysate levels of dopamine (DA) andExpand
A comparative in vitro and in vivo pharmacological characterization of the novel dopamine D3 receptor antagonists (+)-S 14297, nafadotride, GR 103,691 and U 99194.
The benzofurane (+)-S 14297, the benzamide nafadotride, the aminoindane U 99194 and the arylpiperazine GR 103,691 have been proposed as "selective" antagonists at dopamine D3 vs. D2 receptors.Expand
Anxiolytic properties of agomelatine, an antidepressant with melatoninergic and serotonergic properties: role of 5-HT2C receptor blockade
RationaleThe novel antidepressant agent, agomelatine, behaves as an agonist at melatonin receptors and as an antagonist at serotonin (5-HT)2C receptors.ObjectivesTo determine whether, by virtue ofExpand
Agonist and antagonist actions of yohimbine as compared to fluparoxan at α2‐adrenergic receptors (AR)s, serotonin (5‐HT)1A, 5‐HT1B, 5‐HT1D and dopamine D2 and D3 receptors. Significance for the
Herein, we evaluate the interaction of the α2‐AR antagonist, yohimbine, as compared to fluparoxan, at multiple monoaminergic receptors and examine their roles in the modulation of adrenergic,Expand
S33084, a novel, potent, selective, and competitive antagonist at dopamine D(3)-receptors: II. Functional and behavioral profile compared with GR218,231 and L741,626.
The selective dopamine D(3)-receptor antagonist S33084 dose dependently attenuated induction of hypothermia by 7-hydroxy-2-dipropylaminotetralin (7-OH-DPAT) and PD128,907. S33084 also doseExpand
Citalopram reduces social interaction in rats by activation of serotonin (5-HT)2C receptors
The selective serotonin (5-HT) reuptake inhibitor (SSRI), citalopram (2.5 mg/kg, s.c.), reduced social interaction (SI) in rats. This action was abolished by the 5-HT(2B/2C) receptor antagonist,Expand
Pro-cognitive effects of 5-HT6 receptor antagonists in the social recognition procedure in rats: implication of the frontal cortex
Rationale5-HT6 receptor antagonists improve cognitive processes in rodents. However, their site(s) of action remains unexplored and their influence upon social memory has been littleExpand
Discriminative stimulus properties of the novel serotonin (5-HT)2C receptor agonist, RO60-0175: a pharmacological analysis
Employing a Fixed-Ratio 10, food-reinforced protocol, rats were trained to recognize the discriminative stimulus (DS) properties of the novel, potent, 5-HT2C agonist, Ro 60-0175 (2.5 mg/kg, i.p.).Expand
S32006, a novel 5-HT2C receptor antagonist displaying broad-based antidepressant and anxiolytic properties in rodent models
RationaleSerotonin (5-HT)2C receptors are implicated in the control of mood, and their blockade is of potential interest for the management of anxiodepressive states.ObjectivesHerein, weExpand
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