Auflistung nach Autor "Pitsikas, N."
Anzeige der Dokumente 1-20 von 39
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The 5-HT1A receptor and recognition memory possible modulation of its behavioral effects by the nitrergic system
Pitsikas, N.; Tsitsirigou, S.; Zisopoulou, S.; Sakellaridis, N. (2005)Functional activation of the 5-HT1A receptor inhibits cognition, although discrepant findings have also been reported. The present study was designed to investigate the role of the 5-HT1A receptor on recognition memory in ... -
The 5-HT1A receptor antagonist WAY 100635 improves rats performance in different models of amnesia evaluated by the object recognition task
Pitsikas, N.; Rigamonti, A. E.; Cella, S. G.; Muller, E. E. (2003)The effects of the 5-HT1A receptor antagonist WAY 100635 on recognition memory were investigated in two different amnestic models in the rat by using the object recognition task. WAY 100635 at I mg/kg, but not at 0.3 mg/kg, ... -
The 5-HT2c receptor antagonist RO 60-0491 counteracts rats' retention deficits in a recognition memory task
Pitsikas, N.; Sakellaridis, N. (2005)The effects of the 5-HT2C receptor antagonist RO 60-0491 on recognition memory were investigated in the rat by using the object recognition task. Post-training administration of RO 60-0491 at 3 mg/kg, but not at 1 mg/kg, ... -
Anesthetic Ketamine Impairs Rats' Recall of Previous Information The Nitric Oxide Synthase Inhibitor N-nitro-L-arginine Methylester Antagonizes This Ketamine-induced Recognition Memory Deficit
Boultadakis, A.; Pitsikas, N. (2011)Background: There is poor experimental evidence concerning the effects of anesthetic doses of the noncompetitive N-methyl-D-aspartate receptor antagonist ketamine on rodents' memory abilities. The current study was designed ... -
Crocins, the active constituents of Crocus Sativus L., counteracted ketamine-induced behavioural deficits in rats
Georgiadou, G.; Grivas, V.; Tarantilis, P. A.; Pitsikas, N. (2014)Experimental evidence indicates that the non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist ketamine impairs cognition and can mimic certain aspects of positive and negative symptoms of schizophrenia in rodents. ... -
Crocus sativus L. extracts antagonize memory impairments in different behavioural tasks in the rat
Pitsikas, N.; Sakellaridis, N. (2006)The effects of extracts of Crocus sativus L. (CSE), on memory were investigated in the rat by using the object recognition and the step-through passive avoidance task. In the first study, post-training administration of ... -
The Effect of Crocus sativus L. and Its Constituents on Memory: Basic Studies and Clinical Applications
Pitsikas, N. (2015)Memory-related disorders are a common public health issue. Memory impairment is frequent in degenerative diseases (such as Alzheimer's disease and Parkinson disease), cerebral injuries, and schizophrenia. The dried stigma ... -
Effects of scopolamine and L-NAME on rats' performance in the object location test
Pitsikas, N. (2007)The object location task is a new procedure evaluating spatial memory abilities in the rat. The aim of the present study was to characterize this behavioural paradigm by pharmacologic means. For this purpose, the effects ... -
Effects of sub-anesthetic doses of ketamine on rats' spatial and non-spatial recognition memory
Pitsikas, N.; Boultadakis, A.; Sakellaridis, N. (2008)There are experimental evidences indicating that the non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist ketamine impairs cognition and produces a series of schizophrenia-like symptoms in rodents (hyperactivity, ... -
Effects of the active constituent of Crocus sativus L. crocin on recognition and spatial rats' memory
Pitsikas, N.; Zisopoulou, S.; Tarantilis, P. A.; Kanakis, C. D.; Polissiou, M. G.; Sakellaridis, N. (2007)Crocus Sativus L. is a plant cultivated in various parts of the world. Its involvement in learning and memory processes has been proposed. The present study was designed to investigate in the rat the effects of the active ... -
Effects of the active constituents of Crocus Sativus L., crocins on recognition and spatial rats memory
Pitsikas, N.; Zisopoulou, S.; Tarantilis, P.; Kanakis, C. D.; Polissiou, M. G.; Sakellaridis, N. (2007) -
Effects of the active constituents of Crocus sativus L., crocins, in an animal model of anxiety
Pitsikas, N.; Boultadakis, A.; Georgiadou, G.; Tarantilis, P. A.; Sakellaridis, N. (2008)Crocus sativus L. is a plant cultivated in various parts of the world. Crocins are among the active components of Crocus sativus L. The present study was designed to investigate in the rat whether or not crocins possess ... -
Effects of the active constituents of Crocus Sativus L., crocins, in an animal model of obsessive-compulsive disorder
Georgiadou, G.; Tarantilis, P. A.; Pitsikas, N. (2012)Crocins are among the active components of the plant Crocus Sativus L C. Sativus L and its constituents were effective in different models of psychiatric disorders including anxiety and depression. Obsessive-compulsive ... -
Effects of the nitric oxide synthase inhibitor L-NAME on different memory components as assessed in the object recognition task in the rat
Boultadakis, A.; Georgiadou, G.; Pitsikas, N. (2010)Nitric oxide (NO) is sought to be an intracellular messenger in the central nervous system and its implication in learning and memory is well documented. Compounds that inhibit nitric oxide synthase (NOS), the key synthesizing ... -
Effects of the Nitric Oxide Synthase Inhibitor L-NAME on Recognition and Spatial Memory Deficits Produced by Different NMDA Receptor Antagonists in the Rat
Boultadakis, A.; Pitsikas, N. (2010)There is consistent experimental evidence that noncompetitive antagonists of the N-methyl-D-aspartate (NMDA) receptor, such as ketamine, MK-801, and phencyclidine (PCP), impair cognition and produce psychotomimetic effects ... -
Feeding behavior during long-term hexarelin administration in young and old rats
Bresciani, E.; Pitsikas, N.; Tamiazzo, L.; Luoni, M.; Bulgarelli, I.; Cocchi, D.; Locatelli, V.; Torsello, A. (2008)Ghrelin, a 28-amino-acid peptide isolated from the stomach, is the natural ligand of the GH-secretagogues receptor-la (GHS-R1a) and, so far, the only discovered circulating appetite-stimulating hormone. Similarly to ghrelin, ... -
The GABA(B) receptor and recognition memory: Possible modulation if its behavioral effects by the nitrergic system
Pitsikas, N.; Rigamonti, A. E.; Cella, S. G.; Muller, E. E. (2003)Functional activation of the GABA(B) receptor inhibits learning and memory processes, though discrepant findings, in this context, have also been reported. The present study was designed to investigate the role of the ... -
Importance of Body Temperature and Clinical Data in Behavioral and Anesthesia Studies Reply
Boultadakis, A.; Pitsikas, N. (2012)