Effects of high glucose on human umbilical vein endothelial cell permeability and myosin light chain phosphorylation.
Diabetol Metab Syndr
; 7: 98, 2015.
Article
em En
| MEDLINE
| ID: mdl-26583048
ABSTRACT
BACKGROUND:
Diabetes mellitus is one of the most important risk factors for atherosclerosis. However, the mechanisms underlying high-glucose-induced atherosclerosis remain unclear. This study was designed to observe the effects of high-glucose stimulation on the permeability of cultured human umbilical vein endothelial cells (HUVECs), and to explore the effects of RhoA-Rho-associated protein kinase (ROCK) signal transduction pathway activation and myosin light chain (MLC) phosphorylation.METHODS:
HUVECs were cultured in conventional M199 medium to produce endothelial cell monolayers, and stimulated with high-glucose-M199 medium. The transmembrane transport of dextran and THP-1 cells and levels of MLC phosphorylation were measured. The effects of blocking the RhoA-ROCK pathway using dnRhoA or the ROCK inhibitor Y27632 on dextran and THP-1 transport and MLC phosphorylation were observed.RESULTS:
Transendothelial migration of dextran and THP-1 cells were significantly increased by stimulation of HUVEC monolayers with high glucose (P < 0.05). This effect was attenuated by treatment with dnRhoA or Y27632.CONCLUSION:
High-glucose stimulation upregulated MLC phosphorylation and increased endothelial permeability by activating the RhoA-ROCK signaling pathway in HUVECs in vitro.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Diabetol Metab Syndr
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
China