The Rostral Ventrolateral Medulla
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. The pressor effect of angiotensin-(1-7) in the rat rostral ventrolateral medulla involves multiple peripheral mechanisms
OBJECTIVE: In the present study, the peripheral mechanism that mediates the pressor effect of angiotensin-(1-7) in the rostral ventrolateral medulla was investigated. METHOD: Angiotensin-(1-7) (25 pmol) was bilaterally microinjected in the rostral ventrolateral medulla near the ventral surface in urethane-anesthetized male Wistar rats that were untreated or
Clinics. Publicado em: 2013
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2. New perspective on the pathophysiology of panic: merging serotonin and opioids in the periaqueductal gray
Panic disorder patients are vulnerable to recurrent panic attacks. Two neurochemical hypotheses have been proposed to explain this susceptibility. The first assumes that panic patients have deficient serotonergic inhibition of neurons localized in the dorsal periaqueductal gray matter of the midbrain that organize defensive reactions to cope with proximal th
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-04
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3. Cardiovascular and autonomic modulation by the central nervous system after aerobic exercise training
The autonomic nervous system plays a key role in maintaining homeostasis under normal and pathological conditions. The sympathetic tone, particularly for the cardiovascular system, is generated by sympathetic discharges originating in specific areas of the brainstem. Aerobic exercise training promotes several cardiovascular adjustments that are influenced by
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-09
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4. Angiotensin-II-induced reactive oxygen species along the SFO-PVN-RVLM pathway: implications in neurogenic hypertension
Neurogenic hypertension has been the subject of extensive research worldwide. This review is based on the premise that some forms of neurogenic hypertension are caused in part by the formation of angiotensin-II (Ang-II)-induced reactive oxygen species along the subfornical organ-paraventricular nucleus of the hypothalamus-rostral ventrolateral medulla pathwa
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-09
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5. Efeito do Óxido Nítrico na Regulação de Parâmetros Cardiovasculares pela CVLM em Ratos com Hipertensão Renovascular 2R1C / Efeito do Óxido Nítrico na Regulação de Parâmetros Cardiovasculares pela CVLM em Ratos com Hipertensão Renovascular 2R1C
Hypertension may occur due to hyperactivity of neurons in the rostral ventrolateral medulla (RVLM) (Chan et al. 1991; Boone and McMillen, 1994, Suzuki et al. 1994; Minson et al., 1996) and/or due to a reduced tone of GABAergic neurons of the caudal ventrolateral medulla (CVLM) that projects to the RVLM. Furthermore, during hypertension occurs an elevation of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/05/2010
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6. Mecanismos geradores da atividade vasomotora simpática na hipertensão arterial renovascular em ratos Wistar / Mechanisms of vasomotor sympathetic activity generation in the renovascular hypertension in Wistar rats
A Hipertensão arterial (HA) renovascular está associada com uma hiperatividade simpática e prejuízo na sensibilidade reflexa do barorreceptor determinadas por aumento na Angiotensina II (Ang II) circulante. O objetivo da presente Tese foi avaliar o papel do estresse oxidativo na geração e manutenção da HA 2 Rins-1Clipe. Ratos Machos Wistar foram util
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/06/2009
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7. Integrated Cardio-Respiratory Mechanisms within the brainstem: Involvement of the Caudal Pressor Area, the Nucleus of the Solitary Tract and the Retrotrapezopid Nucleus. / Mecanismos Cardio-Respiratórios Integrados na Região Bulbar: Participação da Área Pressora Caudal, dos Núcleos do Trato Solitário e do Núcleo Retrotrapezóide.
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. It is well known that in the ventrolateral medulla there are, at least, three important regions involved with cardiovascular control: the rostral ventrolateral medulla (RVLM), the
Publicado em: 2009
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8. Role of the caudal pressor area in the regulation of sympathetic vasomotor tone
It is well known that the ventrolateral medulla contains neurons involved in the tonic and reflex control of the cardiovascular system. Two regions within the ventrolateral medulla were initially identified: the rostral ventrolateral medulla (RVLM) and the caudal ventrolateral medulla (CVLM). Activation of the RVLM raises arterial blood pressure and sympathe
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-07
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9. Effects of Physical Activity of Varied Intensities in Renovascular Hypertension 2k1c rats / EFEITOS DA ATIVIDADE FÍSICA DE INTENSIDADES VARIADAS EM RATOS COM HIPERTENSÃO RENOVASCULAR 2R1C
IX In hypertension, caudal ventrolateral medulla neurons (CVLM) are unable to counteract the increased intrinsic activity of rostral ventrolateral medulla neurons. Besides, the increased activity of renin angiotensin system (RAS) represents an important humoral change that promotes hypertension, raising the sympathetic vasomotor tonus and impairing the baror
Publicado em: 2008
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10. 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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11. Alterações de Parâmetros Cardiovasculares e Envolvimento dos Receptores AT2 na CVLM sobre a Pressão Arterial, induzidas por Atividade Física de Baixa Intensidade em Ratos com Hipertensão Renovascular
10 Low intensity physical activity has been used as a non-pharmacological treatment for hypertension. The caudal vetrolateral medulla (CVLM) represents the major tonic inhibitory afferece to the rostral ventrolateral medulla (RVLM). Regarding hypertensive states, CVLM neurons seem to be inefficient in counteracting the increased intrinsic pressor activity of
Publicado em: 2007
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12. Purinergic central pathways involved in the muscle blood flow regulation during alerting defense behaviours. / Vias centrais purinérgicas envolvidas na regulação do fluxo sangüíneo muscular durante os comportamentos de alerta e defesa
The electrical stimulation (ES) of the hypothalamus in the rat produces a well- defined pattern of cardiovascular adjustments including hypertension, tachycardia and skeletal muscle vasodilation. These hemodynamic responses can also be observed in natural conditions during fight and/or flight behaviors. However the neural pathways and possible neurotransmitt
Publicado em: 2006