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• W202598497 abstract "Dopamine is a neurotransmitter with an important role in forming long-lasting memories for some time, especially in episodic memory. Literature data show that dopamine receptor stimulation may be detrimental to spatial working memory functions in lab animals. (R)-(+)-7-Chloro-8-hydroxy-3-methyl-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride derivative--SCH-23390 is a synthetic compound that acts as a selective, high-affinity antagonist of D1 receptors. Experimental studies suggest that SCH 23390 may prevent the spatial working memory disturbances induced by the active substances of marijuana. Melperone is an atypic antipsychotic drug presenting also dopaminergic D2 and 5-HT2A receptor antagonistic activity. This neuroleptic agent is used in the treatment of some types of schizophrenia.Experimental research on the effects of two dopamine receptor antagonists on spatial memory performance in rats.The experiment was carried out in white Wistar rats (200-250g), divided into 3 groups of 7 animals each, treated intraperitoneally with the same volume of solution for 14 days, as follows: Group I (Control): saline solution 0.1 ml/10g kbw; Group II (coded SCH): SCH-23390 0.3 mg/kbw; Group III (coded MLP): melperone 2 mg/kbw. The dopaminergic agent spatial memory performance was assessed by recording spontaneous alternation behavior in a single session in Y-maze. Each animal was placed at the end of one arm and allowed to move freely through the maze during an 8 min session. Alternation was defined as a consecutive entry in three different arms. The alternation percentage was computed with the following formula: number of alternations divided by total number of arm visits minus 2. Data were presented as +/- standard deviation and significance was tested by SPSS Statistics for Windows version 13.0 and ANOVA method. P-values less than 0.05 were considered statistically significant compared to those in the control group. Experimental researches were carried out in compliance with the regulations of our University Committee for Research and Ethical Issues.SCH-23390 (0.3 mg/kbw) and melperone (2 mg/kbw) intraperitoneal injection for 14 days determined a statistically significant (p < 0.05 and p < 0.01, respectively) increase in spontaneous alternation rate (compared to controls in Y-maze test).Our research revealed that the 14 consecutive days administration of these two dopamine receptor antagonists was associated with the improvement of short-term memory in rats, more intense for SCH-23390 compound." @default.
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• W202598497 date "2014-04-20" @default.
• W202598497 modified "2023-10-18" @default.
• W202598497 title "Effects of some dopamine antagonists on spatial memory performance in rats--experimental research." @default.
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