Effects of Nuclear Factor-E2-related factor 2/Heme Oxygenase 1 on splanchnic hemodynamics in experimental cirrhosis with portal hypertension

被引:6
|
作者
Qin, Jun [1 ]
He, Yue [1 ]
Duan, Ming [1 ]
Luo, Meng [2 ]
机构
[1] Shanghai Jiao Tong Univ, Shanghai Renji Hosp, Sch Med, Dept Gen Surg, Shanghai, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 9, Sch Med, Dept Gen Surg, Shanghai, Peoples R China
基金
中国国家自然科学基金;
关键词
Portal hypertension; Heme Oxygenase 1; Contractile response; Splanchnic hemodynamics; Nuclear Factor-e2-related factor 2; OXIDATIVE STRESS; CARBON-MONOXIDE; HEME OXYGENASE; NITRIC-OXIDE; NRF2; PATHWAY; CARDIOVASCULAR-DISEASE; RATS; ACTIVATION; EXPRESSION; PROTECTS;
D O I
10.1016/j.mvr.2016.12.009
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Objective: We explored the effects of Nuclear Factor-E2-related factor 2 (Nrf2) and Heme Oxygenase 1 (HO-1) on splanchnic hemodynamics in portal hypertensive rats. Methods: Experimental cirrhosis with portal hypertension was induced by intraperitoneal injection of carbon tetrachloride. The expression of proteins was examined by immunoblotting. Hemodynamic studies were performed by radioactive microspheres. The vascular perfusion system was used to measure the contractile response of mesentery arterioles in rats. Results: Nrf2 expression in the nucleus and HO-1 expression in cytoplasm was significantly enhanced in portal hypertensive rats. Portal pressure, as well as regional blood flow, increased significantly in portal hypertension and can be blocked by tin protoporphyrin IX. The expression of endogenous nitric oxide synthase and vascular endothelial growth factors increased significantly compared to normal rats, while HO-1 inhibition decreased the expression of these proteins significantly. The contractile response of mesenteric arteries decreased in portal hypertension, but can be partially recovered through tin protoporphyrin IX treatment. Conclusions: The expression of Nrf2/HO-1 increased in mesenteric arteries of portal hypertensive rats, which was related to oxidative stress. HO-1was involved in increased portal pressure and anomaly splanchnic hemodynamics in portal hypertensive rats. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码:12 / 19
页数:8
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