Hypertension activates vessel wall oxygen and metabolism sensing pathways and accelerates atherosclerosis / 中华老年医学杂志
Chinese Journal of Geriatrics
;
(12): 1103-1107, 2012.
Artigo
em Chinês
| WPRIM
| ID: wpr-430219
ABSTRACT
Objective To study the molecular mechanism of atherosclerosis induced by intravascular pressure.Methods Technic aortic coarctation (TAC) was performed in ApoE-/-mice (n=8) and control littermate (n=8) mice.HE staining was performed in the vessels upstream and downstream of the mice models.In vitro,hypoxia inducible factor-1a (HIF-1α),heme oxygenase,reactive oxygen species and phosphorylated AMP activated protein kinase (AMPK) were analyzed in different intravascular pressure with a myograph system that allowed independent variation of flow and pressure.Results After one month of TAC,ApoE/ mice in a normal chow diet developed occlusive plaque and accelerated atherosclerotic lesions exclusively in upstream high-pressure vessel segments.In vitro,HIF-1α was increased,heme oxygenase was higher over(2.7 ±0.6) fold,reactive oxygen species and phosphorylated AMPK were also enhanced in high intravascular pressure perfused vessel segments as compared with low intravascular pressure perfused vessel segments (all P<0.05).Conclusions Intravascular pressure elevation can activate hypoxia and metabolism-associated pathways in the arterial wall,and predispose atherosclerosis accelerated.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Tipo de estudo:
Estudo prognóstico
Idioma:
Chinês
Revista:
Chinese Journal of Geriatrics
Ano de publicação:
2012
Tipo de documento:
Artigo
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