Prevention of renal hypertension in the rat by neuropeptide Y.
Détails
ID Serval
serval:BIB_AC973EDF204C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Prevention of renal hypertension in the rat by neuropeptide Y.
Périodique
Journal of Hypertension
ISSN
0263-6352
Statut éditorial
Publié
Date de publication
1990
Peer-reviewed
Oui
Volume
8
Numéro
1
Pages
21-25
Langue
anglais
Notes
Journal Article --- Old month value: Jan
Résumé
Neuropeptide Y is known to enhance blood pressure responsiveness to various constrictors, including angiotensin II, and to suppress renin secretion. This study was undertaken to assess the effect of neuropeptide Y on the development of two-kidney, one clip renal hypertension. Normotensive rats either had a silver clip placed on the left renal artery or were sham-operated upon. An osmotic minipump, which was connected via a catheter to a jugular vein, was implanted subcutaneously in all rats. These pumps delivered either neuropeptide Y (0.001 microgram/min) or saline intravenously. Eight days later, an intra-arterial catheter was inserted and the rats were studied while not anesthetized on the following day. Neuropeptide Y did not affect body weight. In clipped rats, neuropeptide Y prevented the development of hypertension and suppressed renin secretion. Neuropeptide Y significantly decreased blood pressure also in sham-operated rats, although it had no effect on plasma renin activity. These data indicate that prolonged neuropeptide Y infusion may lower blood pressure by different mechanisms, one of which is probably a suppression of renin release.
Mots-clé
Animals, Blood Pressure, Body Weight, Hypertension, Renovascular, Infusion Pumps, Implantable, Male, Neuropeptide Y, Rats, Rats, Inbred Strains, Renin, Renin-Angiotensin System
Pubmed
Web of science
Création de la notice
05/03/2008 16:39
Dernière modification de la notice
20/08/2019 15:16