Electrolytic Lesion
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. ROLE OF DORSAL AND VENTRAL HIPPOCAMPUS ON CONDITIONED AND UNCONDITIONED FEAR ELICITED BY DORSAL PERIAQUEDUCTAL GREY MATTER ELECTRICAL STIMULATION IN RATS / PARTICIPAÇÃO DO HIPOCAMPO DORSAL E VENTRAL NAS REAÇÕES DE DEFESA PRODUZIDAS PELO CONDICIONAMENTO CONTEXTUAL DE MEDO E PELA ESTIMULAÇÃO ELÉTRICA DA MATÉRIA CINZENTA PERIAQUEDUTAL DORSAL
This study investigates the role of the hippocampus in both unconditioned and conditioned defense behavior by examining the effects of pre-training electrolytic lesions to the dorsal and ventral hippocampus in male rats exposed to two types of threat stimuli: electrical stimulation of the DPAG and footshock. Our results indicate that ventral and dorsal lesio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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2. Análise dos efeitos do transplante de células mononucleares da medula óssea em camundongos submetidos à lesão eletrolítica do hipocampo dorsal. / Analysis of the effects of bone marrow mononuclear cells transplantation in mice submitted to electrolytic lesion of the dorsal hippocampus.
Diversos estudos sugerem que as células-tronco da medula óssea podem ser úteis no tratamento de lesões do tecido nervoso. O presente estudo investigou se a terapia com células medulares seria capaz de modificar os efeitos comportamentais de lesões no hipocampo. Células mononucleares da medula óssea marcadas com a proteína fluorescente verde (EGFP) f
Publicado em: 2010
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3. Changes in sodium appetite evoked by lesions of the commissural nucleus of the tractus solitarius
Ablation of the area postrema/caudal nucleus of the tractus solitarius (NTS) complex increases sodium intake, but the effect of selective lesions of the caudal NTS is not known. We measured depletion-induced sodium intake in rats with electrolytic lesions of the commissural NTS that spared the area postrema. One day after the lesion, rats were depleted of so
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-06
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4. Núcleo central da amígdala e Núcleo parabraquial lateral no controle da ingestão de sódio
Previous studies have shown the importance of serotonergic GABAergic and aadrenergic mechanisms of the lateral parabraquial nucleus (LBPN) in the control of sodium intake. The importance of the central nucleus of the amygdala (CeA) for sodium intake induced by different protocols was also demonstrated. Considering the studies showing reciprocal connections b
Publicado em: 2009
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5. Participação da área septal medial nas respostas sialogoga, dipsogênica e cardiovascular induzidas pela pilocarpina
Peripheral injection of pilocarpine (PILO, 1 mg/Kg of body weight), muscarinic cholinergic agonist, induce salivation, water intake and pressor response. The medial septal area (MSA) is an important brain area involved in cardiovascular regulation and hydroelectrolytic control. In this present study, we investigated: 1) the effect of MSA electrolytic lesion
Publicado em: 2008
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6. Importância da região AV3V e de mecanismos colinérgicos e angiotensinérgicos centrais para os efeitos cardiovasculares produzidos pela ativação da área rostroventrolateral do bulbo
Cardiovascular responses are integrated at different levels of the central nervous system (CNS). In the brainstem, there are different areas related to the cardiovascular control such as the rostral ventrolateral medulla (RVLM) that activates sympathetic pre-ganglionic neurons in the spinal cord (IML) inducing pressor response. Like glutamatergic activation,
Publicado em: 2008
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7. Lesions of the commissural subnucleus of the nucleus of the solitary tract increase isoproterenol-induced water intake
The nucleus of the solitary tract (NTS) is the primary site of the cardiovascular afferent information about arterial blood pressure and volume. The NTS projects to areas in the central nervous system involved in cardiovascular regulation and hydroelectrolyte balance, such as the anteroventral third ventricle region and the lateral parabrachial nucleus. The
Brazilian Journal of Medical and Biological Research. Publicado em: 05/07/2007
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8. Efeitos da lesão do núcleo do trato solitário comissural sobre a ingestão de água e sólido.
The central nervous system (CNS) has an important function in the regulation of homeostatic mechanisms controlling the volemia and osmolality of the body fluid. The nucleus of the tract solitary (NTS) is the primary site of the cardiovascular afferents and peripheral osmoreceptors. From to NTS, the information about arterial blood pressure, extracellular flu
Publicado em: 2005
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9. Importância da região AV3V para as respostas pressoras produzidas pela ativação de áreas bulbares.
Cardiovascular responses are integrated at different levels of the central nervous system (CNS). Particularly the hypothalamus and brainstem areas are involved in the control of autonomic responses and among them the cardiovascular responses. Different areas in the brainstem, like the nucleus tract solitarii (NTS), the rostroventrolateral medulla (RVLM), cau
Publicado em: 2005
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10. The compulsive-like aspect of the head dipping emission in rats with chronic electrolytic lesion in the area of the median raphe nucleus
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 t
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-02
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11. Effect of electrolytic lesion of the dorsal raphe nucleus on water intake and sodium appetite
The present study determined the effect of an electrolytic lesion of the dorsal raphe nucleus (DRN) on water intake and sodium appetite. Male Wistar rats weighing 290-320 g with a lesion of the DRN (L-DRN), performed two days before experiments and confirmed by histology at the end of the experiments, presented increased sensitivity to the dehydration induce
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-12
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12. Evidence of the effect of dipyrone on the central nervous system as a determinant of delayed gastric emptying observed in rats after its administration
Dipyrone administered intravenously (iv) delays gastric emptying (GE) in rats. The objectives of the present study were to assess: 1) the effect of the dose of dipyrone and time after its iv administration on GE in rats, 2) the effect of subdiaphragmatic vagotomy (VgX) and bilateral electrolytic lesion of the paraventricular nucleus (PVNX) on the delayed GE
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-10