Aldosterone Modulates Cell Proliferation and Apoptosis in the Neonatal Rat Heart
Journal of Korean Medical Science
;
: 1296-1304, 2010.
Artigo
em Inglês
| WPRIM
| ID: wpr-177039
ABSTRACT
In the present study, we investigated whether and how the mineralocorticoid receptor antagonist spironolactone affects cardiac growth and development through apoptosis and cell proliferation in the neonatal rat heart. Newborn rat pups were treated with spironolactone (200 mg/kg/d) for 7 days. The cell proliferation was studied by PCNA immunostaining. The treatment with spironolactone decreased proliferating myocytes by 32% (P<0.05), and reduced myocytes apoptosis by 29% (P<0.05). Immunoblot and immunohistochemistry for the expression of p38, p53, clusterin, TGF-beta2, and extracellular signal-regulated kinase were performed. In the spironolactone group, p38, p53, clusterin, and TGF-beta2 protein expression was significantly decreased (P<0.05). These results indicate that aldosterone inhibition in the developing rat heart induces cardiac growth impairment by decreasing proliferation and apoptosis of myocytes.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Espironolactona
/
Proteína Supressora de Tumor p53
/
Ratos Sprague-Dawley
/
Apoptose
/
Antígeno Nuclear de Célula em Proliferação
/
Proteínas Quinases p38 Ativadas por Mitógeno
/
Proliferação de Células
/
Antagonistas de Receptores de Mineralocorticoides
/
Clusterina
/
Fator de Crescimento Transformador beta2
Limite:
Animais
Idioma:
Inglês
Revista:
Journal of Korean Medical Science
Ano de publicação:
2010
Tipo de documento:
Artigo
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