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	Provedor de dados BJMBR (3) Autor Alvarenga,R.M. (1) Babar,E. (1) Futuro Neto,H.A. (1) Hoshino,K. (1) Melik,E. (1) Pires,J.G.P. (1) Uga,D.A. (1) de Paula,H.M.G. (1) Özgünen,T. (1) Mais... Palavra-chave Median raphe nucleus (3) Acetylcholine (1) Blood pressure (1) Dorsal raphe nucleus (1) Electrolytic lesion (1) Head dipping (1) Inhibitory avoidance (1) L-glutamate (1) Rat (1) Repetitive behavior (1) Respiration (1) Scopolamine (1) Serotonin (1) Sympathetic nerve activity (1) Working memory (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Info:eu-repo/semantics/other (1) Ano 2005 (1) 2004 (1) 2002 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Functional mapping of the cardiorespiratory effects of dorsal and median raphe nuclei in the rat BJMBR Alvarenga,R.M.; Pires,J.G.P.; Futuro Neto,H.A.. The dorsal (DRN) and median (MRN) raphe nuclei are important sources of serotonergic innervation to the forebrain, projecting to sites involved in cardiovascular regulation. These nuclei have been mapped using electrical stimulation, which has the limitation of stimulating fibers of passage. The present study maps these areas with chemical stimulation, investigating their influence on cardiorespiratory parameters. Urethane-anesthetized (1.2 g/kg, iv) male Wistar rats (280-300 g) were instrumented for pulsatile and mean blood pressure (MBP), heart rate, renal nerve activity, and respiratory frequency recordings. Microinjections of L-glutamate (0.18 M, 50-100 nl with 1% Pontamine Sky Blue) were performed within the DRN or the MRN with glass micropipettes. At... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dorsal raphe nucleus; Median raphe nucleus; L-glutamate; Blood pressure; Respiration; Sympathetic nerve activity. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100022 Excitotoxic median raphe lesions aggravate working memory storage performance deficits caused by scopolamine infusion into the dentate gyrus of the hippocampus in the inhibitory avoidance task in rats BJMBR Babar,E.; Melik,E.; Özgünen,T.. The interactions between the median raphe nucleus (MRN) serotonergic system and the septohippocampal muscarinic cholinergic system in the modulation of immediate working memory storage performance were investigated. Rats with sham or ibotenic acid lesions of the MRN were bilaterally implanted with cannulae in the dentate gyrus of the hippocampus and tested in a light/dark step-through inhibitory avoidance task in which response latency to enter the dark compartment immediately after the shock served as a measure of immediate working memory storage. MRN lesion per se did not alter response latency. Post-training intrahippocampal scopolamine infusion (2 and 4 µg/side) produced a more marked reduction in response latencies in the lesioned animals compared to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Working memory; Median raphe nucleus; Serotonin; Scopolamine; Acetylcholine; Inhibitory avoidance. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000400012 The compulsive-like aspect of the head dipping emission in rats with chronic electrolytic lesion in the area of the median raphe nucleus BJMBR Hoshino,K.; Uga,D.A.; de Paula,H.M.G.. Head dipping (HD) is a behavioral pattern considered to have a risk assessment or an exploratory role and is used as a complementary parameter to evaluate anxiety in experimental animals. Since rats with electrolytic lesion in the area of the median raphe nucleus displayed high frequencies of HD in a previous study, the present investigation was undertaken to confirm this observation and to determine its anxiety-related origin. HD episodes were counted in adult male Wistar rats (270-350 g) with electrolytic lesion (N = 11) and sham-lesioned controls (N = 12). When HD was measured for 60 min on an elevated open platform, lesioned rats emitted 13 times more HD than controls (264.7 ± 93.3 vs 20.3 ± 7.6 episodes), with the difference being statistically... Tipo: Info:eu-repo/semantics/other Palavras-chave: Head dipping; Repetitive behavior; Median raphe nucleus; Electrolytic lesion; Rat. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000200012 Registros recuperados: 3 Primeira ... 1 ... Última

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