E-viri
Recenzirano
-
De Angelis, Noeleen; Fiordaliso, Fabio; Latini, Roberto; Calvillo, Laura; Funicello, Marcella; Gobbi, Marco; Mennini, Tiziana; Masson, Serge
Journal of molecular and cellular cardiology, 12/2002, Letnik: 34, Številka: 12Journal Article
N. de Angelis, F. Fiordaliso, R. Latini, M. Gobbi, T. Mennini and S. Masson. Appraisal of the Role of Angiotensin II and Aldosterone in Ventricular Myocyte Apoptosis in Adult Normotensive Rat. Journal of Molecular and Cellular Cardiology (2002) 34, 1655–1665. Despite previous observations on isolated ventricular myocytes, there are still few evidences that angiotensin II induces cardiomyocyte apoptosis in vivo. The possibility that aldosterone, the final hormone of the renin-angiotensin-aldosterone system under Ang II control, can stimulate cardiac apoptosis has not yet been explored. Angiotensin II or aldosterone (1 mg/kg each) were infused in adult normotensive rats for different times, and the number of apoptotic ventricular myocyte nuclei was quantified by the TUNEL method, along with caspase-3 activation. The role of angiotensin II type 1 receptor in vivo was assessed by selective blockade with valsartan and ex vivo by binding experiments. In addition, myocytes in primary culture were incubated with Ang II or aldosterone in presence of spironolactone. Continuous infusion of Ang II induced a rapid, AT 1-mediated increase of apoptotic cardiomyocyte nuclei (from 14±9 to 188±35 TdT-labeled nuclei/10 6 after 3 h, P<0.005) and of activated caspase-3, that normalized after 24 h. The normalization was associated with a down-regulation of myocardial AT 1 receptors. Aldosterone stimulated cardiomyocyte apoptosis both in vivo and in isolated cells, to a similar extent as Ang II. The maximal apoptotic rate reported here (∼0.02%) and the transient effect of Ang II suggest that myocyte loss by apoptosis is limited in the present model. The data on aldosterone-induced ventricular myocyte apoptosis deserve further attention to delineate the role of aldosterone in cell death and offer possible mechanistic explanations on the benefits afforded by aldosterone receptor antagonists in heart failure.
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.