Sustained Elevated Levels of Circulating Vasopressin Selectively Stimulate the Proliferation of Kidney Tubular Cells via the Activation of V 2 Receptors - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Endocrinology Année : 2009

Sustained Elevated Levels of Circulating Vasopressin Selectively Stimulate the Proliferation of Kidney Tubular Cells via the Activation of V 2 Receptors

Résumé

The hypothalamic hormone vasopressin (AVP) has known mitogenic effects on various cell types. This study was designed to determine whether sustained elevated levels of circulating AVP could influence cell proliferation within adult tissues known to express different AVP receptors, including the pituitary, adrenal gland, liver, and kidney. Plasmatic AVP was chronically increased by submitting animals to prolonged hyperosmotic stimulation or implanting them with a AVP-containing osmotic minipump. After several days of either treatment, increased cell proliferation was detected only within the kidney. This kidney cell proliferation was not affected by the administration of selective V1a or V1b receptor antagonists but was either inhibited or mimicked by the administration of a selective V2 receptor antagonist or agonist, respectively. Kidney proliferative cells mostly concerned a subpopulation of differentiated tubular cells known to express the V2 receptors and were associated with the phosphorylation of ERK. These data indicate that in the adult rat, sustained elevated levels of circulating AVP stimulates the proliferation of a subpopulation of kidney tubular cells expressing the V2 receptor, providing the first illustration of a mitogenic effect of AVP via the activation of the V2 receptor subtype.Elevated levels of circulating vasopressin selectively stimulate the proliferation of kidney tubular cells via the activation of V2 receptors, thus showing the potential implication in polycystic kidney diseases.
Fichier principal
Vignette du fichier
2008, Alonso.pdf (1.08 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01667647 , version 1 (13-03-2019)

Identifiants

Citer

Gérard Alonso, Evelyne Galibert, Véra Boulay, Anne Duvoid-Guillou, Alexandra Jean, et al.. Sustained Elevated Levels of Circulating Vasopressin Selectively Stimulate the Proliferation of Kidney Tubular Cells via the Activation of V 2 Receptors. Endocrinology, 2009, 150 (1), pp.239-250. ⟨10.1210/en.2008-0068⟩. ⟨hal-01667647⟩
80 Consultations
67 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More