Details

Autor(en) / Beteiligte

• Zhao, Xiao-Yan
• Wang, Xiao-Fang
• Li, Ling
• Zhang, Li
• Shen, De-Liang
• Li, Dan-Hua
• Jin, Qiang-Song
• Zhang, Jin-Ying

Titel

Effects of high glucose on human umbilical vein endothelial cell permeability and myosin light chain phosphorylation

Ist Teil von

• Diabetology and metabolic syndrome, 2015-11, Vol.7 (93), p.98-98, Article 98

Ort / Verlag

England: BioMed Central Ltd

Erscheinungsjahr

2015

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• 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. 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. 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. High-glucose stimulation upregulated MLC phosphorylation and increased endothelial permeability by activating the RhoA-ROCK signaling pathway in HUVECs in vitro.