Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
0-137 |
Sentence |
denotes |
The glycine transporter-1 inhibitor SSR103800 displays a selective and specific antipsychotic-like profile in normal and transgenic mice. |
T2 |
138-229 |
Sentence |
denotes |
Schizophrenia has been initially associated with dysfunction in dopamine neurotransmission. |
T3 |
230-462 |
Sentence |
denotes |
However, the observation that antagonists of the glutamate N-methyl-D-aspartate (NMDA) receptor produce schizophrenic-like symptoms in humans has led to the idea of a dysfunctioning of the glutamatergic system via its NMDA receptor. |
T4 |
463-681 |
Sentence |
denotes |
As a result, there is a growing interest in the development of pharmacological agents with potential antipsychotic properties that enhance the activity of the glutamatergic system via a modulation of the NMDA receptor. |
T5 |
682-890 |
Sentence |
denotes |
Among them are glycine transporter-1 (GlyT1) inhibitors such as SSR103800, which indirectly enhance NMDA receptor function by increasing the glycine (a co-agonist for the NMDA receptor) levels in the synapse. |
T6 |
891-1151 |
Sentence |
denotes |
This study aimed at investigating the potential antipsychotic-like properties of SSR103800, with a particular focus on models of hyperactivity, involving either drug challenge (ie, amphetamine and MK-801) or transgenic mice (ie, NMDA Nr1(neo-/-) and DAT(-/-)). |
T7 |
1152-1361 |
Sentence |
denotes |
Results showed that SSR103800 (10-30 mg/kg p.o.) blocked hyperactivity induced by the non-competitive NMDA receptor antagonist, MK-801 and partially reversed spontaneous hyperactivity of NMDA Nr1(neo-/-) mice. |
T8 |
1362-1529 |
Sentence |
denotes |
In contrast, SSR103800 failed to affect hyperactivity induced by amphetamine or naturally observed in dopamine transporter (DAT(-/-)) knockout mice (10-30 mg/kg p.o.). |
T9 |
1530-1693 |
Sentence |
denotes |
Importantly, both classical (haloperidol) and atypical (olanzapine, clozapine and aripiprazole) antipsychotics were effective in all these models of hyperactivity. |
T10 |
1694-1807 |
Sentence |
denotes |
However, unlike these latter, SSR103800 did not produce catalepsy (retention on the bar test) up to 30 mg/kg p.o. |
T11 |
1808-2080 |
Sentence |
denotes |
Together these findings show that the GlyT1 inhibitor, SSR103800, produces antipsychotic-like effects, which differ from those observed with compounds primarily targeting the dopaminergic system, and has a reduced side-effect potential as compared with these latter drugs. |