Cigarette smoking, a major independent risk factor of atherosclerosis, can cause oxidative and inflammatory damage of vascular tissue. Heme oxygenase-1 (HO-1) is an endogenous cytoprotective enzyme with an anti-oxidant role in cells. The aim of the present study was to investigate whether
HO-1 was able to protect vascular and endothelial cells from the oxidative damage induced by cigarette smoking. It was observed that cigarette smoking was able to induce the generation of the reactive oxygen species (ROS) in carotid arteries of rats. Hemin, a widely used HO-1 inducer, was
able to reduce the generation of ROS. In addition, when human umbilical vein endothelial cells (HUVECs) were cultured in the serum of smoking rats, this was able to increase ROS, and the protective effect of hemin was also observed in this system. In conclusion, the present study demonstrated
that cigarette smoking causes oxidative damage of vascular cells and HUVECs by inducing the generation of ROS, while HO-1 has an anti-oxidant effect in this course. This also implied that hemin, an inducer of HO-1, may have potential therapeutic applicability in the prevention of vascular
diseases caused by cigarette smoking.
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Document Type: Research Article
Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100005, P.R. China
August 1, 2015
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Molecular Medicine Reports is a monthly, peer-reviewed journal available in print and online, that includes studies devoted to molecular medicine, underscoring aspects including pharmacology, pathology, genetics, neurosciences, infectious diseases, molecular cardiology and molecular surgery. In vitro and in vivo studies of experimental model systems pertaining to the mechanisms of a variety of diseases offer researchers the necessary tools and knowledge with which to aid the diagnosis and treatment of human diseases.
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