Differential effects of adiponectin in osteoblast-like cells.
J Recept Signal Transduct Res
; 34(5): 351-60, 2014 Oct.
Article
en En
| MEDLINE
| ID: mdl-24673523
The skeleton should maintain an adequate volume, vigour and strength to carry out the role for which it is designed: to hold the whole soft tissue mass that shapes the body and to protect the vital organs. To fulfil this task a satisfactory food intake is required and regulators that are released in the feeding and fasting states, among other signals indicate how much soft mass needs to be built up. Those signals include the secretion of adipocytokines which could represent a relevant link between soft mass (adipose tissue) and skeleton. We studied the presence of adiponectin receptors (AdipoR1, AdipoR2) and its direct effects in osteosarcoma cell line Saos-2. The results indicated that adiponectin receptors were present in the osteoblastic cells with a higher expression of AdipoR1. Human recombinant globular adiponectin was able to increase viability levels and decrease cytotoxicity rates in cell cultures. Also, adiponectin significantly inhibited alkaline phosphatase activity in supernatants. Osteoprotegerin mRNA expression was significantly reduced after 72 h treatment. The FOS induction was studied and the results exhibited a significant increase caused by adiponectin. In conclusion, all these observations suggest that adiponectin influences bone metabolism decreasing the levels of bone formation. Regulators of adiponectin or its receptors could be circulating to modulate the activities of this peptide.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Osteoblastos
/
Adiponectina
/
Adipoquinas
/
Receptores de Adiponectina
Límite:
Humans
Idioma:
En
Revista:
J Recept Signal Transduct Res
Asunto de la revista:
BIOQUIMICA
/
FISIOLOGIA
Año:
2014
Tipo del documento:
Article
Pais de publicación:
Reino Unido