Effect of low-frequency pulsed electromagnetic fields on activity of rat calvarial osteoblasts through IGF-1R/NO signaling pathway / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
; (6): 158-164, 2019.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-775240
Biblioteca responsável:
WPRO
ABSTRACT
OBJECTIVE@#To investigate the effect of low-frequency pulsed electromagnetic fields (PEMF) on the maturation and mineralization of rat cranial osteoblasts and its relation to IGF-1R/NO signaling pathway.@*METHODS@#The rat osteoblasts were isolated and cultured and randomly divided into blank control group, PEMF group, GSK group (IGF-1R blocker) and PEMF+GSK group. The cells were treated with 50 Hz 0.6 mT PEMF for 1.5 h/d. After 3 d of PEMF treatment, the expressions of protein kinase (AKT), inducible nitric oxide synthase (iNOS) and cGMP-dependent protein kinase (PKG) were detected by Western blotting; on 6 d of PEMF treatment alkaline phosphatase (ALP) activity was determined; on 12 d of PEMF treatment the calcification nodule formation was demonstrated by Alizarin red staining.@*RESULTS@#NO level was significantly increased in rat osteoblasts treated with 50 Hz 0.6 mT PEMF for 1.5 h/d. Western blot analysis showed that the expressions of AKT, iNOS and PKG protein in PEMF group were higher than those in the control group (all <0.01); the ALP activity was increased(<0.05), and the PEMF group had the largest area of Alizarin red staining (<0.01). The expressions of AKT, iNOS and PKG protein in GSK group were lower than those in the control group; the ALP activity was decreased (<0.05), and the GSK group had the least area of Alizarin red staining (<0.01). The expressions of AKT, iNOS, PKG protein, the ALP activity and the area of Alizarin red staining in PEMF+GSK group were between PEMF group and GSK group.@*CONCLUSIONS@#PEMF may enhance the maturation and mineralization of rat cranial osteoblasts through IGF-1R/NO signaling pathway.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Osteoblastos
/
Efeitos da Radiação
/
Transdução de Sinais
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Diferenciação Celular
/
Células Cultivadas
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Receptor IGF Tipo 1
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Proliferação de Células
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Campos Eletromagnéticos
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Metabolismo
/
Óxido Nítrico
Limite:
Animais
Idioma:
Chinês
Revista:
Journal of Zhejiang University. Medical sciences
Ano de publicação:
2019
Tipo de documento:
Artigo