1,721,017 research outputs found
APOMORPHINE-INDUCED AND OXYTOCIN-INDUCED PENILE ERECTION AND YAWNING IN MALE-RATS - EFFECT OF PERTUSSIS TOXIN
No full textRole of nitric oxide in 5HT1c receptor agonist-induced penile erection and yawning in male rats
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Penile erection and yawning induced by 5-HT1c agonists in male rats: relationship with dopaminergic and oxytocinergic transmission
No full textApomorphine- and oxytocin-induced penile erection and yawning: effect of pertuxis toxin. Brain Res. Bull. 28, 315-318
No full textVitamin A deficiency affects neither frontocortical acetylcholine nor working memory
No full textVitamin A is quite often implicated in supporting acetylcholine synthesis. Choline acetyltransferase, the enzyme promoting acetylcholine synthesis, and the vesicular acetylcholine transporter are modulated by retinoic acid treatment. This paper illustrates the effect of vitamin A deprivation on acetylcholine content in the hippocampus, striatum and prefrontal cortex of rats, brain regions containing retinoid acid receptors. The effect of vitamin A deprivation on working memory was also examined. The results obtained demonstrate a decrease in acetylcholine content following 12 weeks vitamin A deprivation in the hippocampus and striatum, but not in prefrontal cortex. Working memory performance assessed in the same rats was unaffected, suggesting a higher susceptibility of hippocampus and striatum to vitamin A deficiency, in terms of cholinergic transmission
PENILE ERECTION AND YAWNING INDUCED BY 5-HT1C RECEPTOR AGONISTS IN MALE-RATS - RELATIONSHIP WITH DOPAMINERGIC AND OXYTOCINERGIC TRANSMISSION
No full textProteolytic conversion of oxytocin by rat brain synaptic membranes: role of aminopeptidases and endopeptidases
No full textTryptophan-deficient diet increases the neurochemical and behavioral response to amphetamine
No full textThe present study examined the effects of a tryptophan-deficient diet on behavioral and neurochemical response to amphetamine. A tryptophan-deficient diet (14 days) decreased striatal serotonin and 5-hydroxyindolacetic acid content in rats. Under the latter conditions, amphetamine increased dopamine efflux in striatum and nucleus accumbens and produced a greater increase in motor activity when compared to controls. These results indicate how response to psychostimulants might be altered in the presence of a tryptophan-deficient diet
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