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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
Contrasting mechanisms of action and sensitivity to antipsychotics of phencyclidine versus amphetamine: importance of nucleus accumbens 5‐HT2A sites for PCP‐induced locomotion in the rat
In the present study, the comparative mechanisms of action of phencyclidine (PCP) and amphetamine were addressed employing the parameter of locomotion in rats. PCP‐induced locomotion (PLOC) wasExpand
Blockade of phencyclidine-induced hyperlocomotion by clozapine and MDL 100,907 in rats reflects antagonism of 5-HT2A receptors.
Whereas haloperidol more potently blocked the locomotion elicited by amphetamine (2.5 mg/kg i.p.) than that elicited by phencyclidine (PCP) (20.0 mg/kg s.c.), with inhibitory dose50s of 0.04 and 0.09Expand
S 16924 ((R)-2-[1-[2-(2,3-dihydro-benzo[1,4] dioxin-5-yloxy)-ethyl]-pyrrolidin-3yl]-1-(4-fluoro-phenyl)-ethanone), a novel, potential antipsychotic with marked serotonin (5-HT)1A agonist properties:
S 16924 antagonized locomotion provoked by dizocilpine and cocaine, reduced conditioned avoidance responses and blocked climbing elicited by apomorphine, models predictive of control of the positiveExpand
S 15535: a highly selective benzodioxopiperazine 5-HT1A receptor ligand which acts as an agonist and an antagonist at presynaptic and postsynaptic sites respectively.
The novel benzodioxopiperazine, S 15535 (4-(benzodioxan-5-yl)1-(indan-2- yl)piperazine), displayed high affinity for 5-HT1A binding sites (1.8 nM) whereas its affinity was 100-fold lower at otherExpand
Pro- and antinociceptive actions of serotonin (5-HT)1A agonists and antagonists in rodents: relationship to algesiometric paradigm
In mice injected with formalin into the hindpaw, the 5-HT1A receptor agonists, 8-OH-DPAT and flesinoxan, equipotently inhibited the early phase (EP) and late phase (LP) of licking. At higher doses,Expand
Multiple alpha-2 adrenergic receptor subtypes. II. Evidence for a role of rat R alpha-2A adrenergic receptors in the control of nociception, motor behavior and hippocampal synthesis of noradrenaline.
In this study, we attempted to identify of the subtype(s) of alpha-2 adrenergic receptor (AR) involved in the control of motor behavior, nociception and the hippocampal synthesis of noradrenalineExpand
Novel benzodioxopiperazines acting as antagonists at postsynaptic 5-HT1A receptors and as agonists at 5-HT1A autoreceptors: a comparative pharmacological characterization with proposed 5-HT1A
The novel benzodioxopiperazines [4-(benzodioxan-5-yl)1-[2- (benzocyclobutane-1-yl)ethyl]piperazine] (S 14489), [4-(benzodioxan-5-yl)1-(indan-2-yl)piperazine)] (S 15535) andExpand
Functional correlates of dopamine D3 receptor activation in the rat in vivo and their modulation by the selective antagonist, (+)-S 14297: 1. Activation of postsynaptic D3 receptors mediates
Using [125I]-iodosulpride as a radioligand, the novel naphthofurane, (+/-)-S 11566 [(+/-)-[7-(N,N-dipropylamino)-5,6,7,8-tetra-hydro- naphtho(2,3b)dihydro,2,3-furane]) showed a marked preference forExpand
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