Influence of renal denervation on blood pressure, sodium and water excretion in acute total obstructive apnea in rats

Página do item simplificado
dc.date.accessioned2011-03-21T23:10:25Z
dc.date.available2011-03-21T23:10:25Z
dc.identifier.citationFRANQUINI, J. V. M. et al. Influence of renal denervation on blood pressure, sodium and water excretion in acute total obstructive apnea in rats. Braz J Med Biol Res, Ribeirão Preto, v. 42, n. 2, p. 214-219, fev. 2009. Disponível em: <http://www.scielo.br/pdf/bjmbr/v42n2/7410.pdf>. Acesso em: 24 fev. 2011.por
dc.identifier.doi10.1590/S0100-879X2009000200010
dc.identifier.issn1678-4510
dc.identifier.urihttp://repositorio.ufes.br/handle/10/633
dc.rightsopen accessen
dc.titleInfluence of renal denervation on blood pressure, sodium and water excretion in acute total obstructive apnea in ratspor
dc.typearticleen
dcterms.abstractObstructive apnea (OA) can exert significant effects on renal sympathetic nerve activity (RSNA) and hemodynamic parameters. The present study focuses on the modulatory actions of RSNA on OA-induced sodium and water retention. The experiments were performed in renal-denervated rats (D; N = 9), which were compared to sham (S; N = 9) rats. Mean arterial pressure (MAP) and heart rate (HR) were assessed via an intrafemoral catheter. A catheter was inserted into the bladder for urinary measurements. OA episodes were induced via occlusion of the catheter inserted into the trachea. After an equilibration period, OA was induced for 20 s every 2 min and the changes in urine, MAP, HR and RSNA were recorded. Renal denervation did not alter resting MAP (S: 113 ± 4 vs D: 115 ± 4 mmHg) or HR (S: 340 ± 12 vs D: 368 ± 11 bpm). An OA episode resulted in decreased HR and MAP in both groups, but D rats showed exacerbated hypotension and attenuated bradycardia (S: -12 ± 1 mmHg and -16 ± 2 bpm vs D: -16 ± 1 mmHg and 9 ± 2 bpm; P < 0.01). The basal urinary parameters did not change during or after OA in S rats. However, D rats showed significant increases both during and after OA. Renal sympathetic nerve activity in S rats increased (34 ± 9%) during apnea episodes. These results indicate that renal denervation induces elevations of sodium content and urine volume and alters bradycardia and hypotension patterns during total OA in unconscious rats.eng
dcterms.creatorFranquini, Joao Vicente Maggioni
dcterms.creatorMedeiros, Ana Raquel Santos de
dcterms.creatorAndrade, Tadeu Uggere de
dcterms.creatorAraújo, Maria Teresa Martins de
dcterms.creatorMoyses, Margareth Ribeiro
dcterms.creatorAbreu, Gláucia Rodrigues de
dcterms.creatorVasquez, Elisardo C. (Elisardo Corral)
dcterms.creatorBissoli, Nazaré Souza
dcterms.issued2009-02
dcterms.languageengen
dcterms.subjectApnéia do sono tipo obstrutivapor
dcterms.subjectNatriuresepor
dcterms.subjectDiuresepor
dcterms.subjectPressão arterialpor
dcterms.subjectRenal nervepor
dcterms.subjectNatriuresispor
dcterms.subjectDiuresispor
dcterms.subjectSleep Apnea, obstructivepor
dcterms.subjectBlood Pressurepor
Arquivos
Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
7410.pdf
Tamanho:
70.25 KB
Formato:
Adobe Portable Document Format
Descrição:
Baixar
Licença do Pacote
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar
Coleções
PPGCF - Artigos publicados em periódicos