%0 Journal Article
%T Reactive oxygen species generation and protein oxidative damage in the liver of Rana nigromaculata exposed to cadmium<br>镉致黑斑蛙肝脏中ROS生成及其蛋白质氧化损伤作用
%A JIA Xiuying
%A SHI Cailei College of Life
%A Environmental Science
%A Hangzhou Normal University
%A Hangzhou
%A <br>贾秀英
%A 施蔡雷
%J 环境科学学报
%D 2010
%I 
%X To explore the degree of protein oxidative damage and its molecular mechanism in the liver of Rana nigromaculata upon exposure to cadmium, healthy adult frogs were exposed to 0.005, 0.010,0.050 or 0.100 mg·L-1 cadmium for 30 days. The protein carbonyl content was assessed with 2,4-dinitrophenylhydrazine and the amount of DNA-protein crosslinking was assayed with KCl-SDS. The level of reactive oxidizing species (ROS) in the liver was also detected. The results showed that the ROS level in mitochondria increased with the cadmium dose and there were significant differences between each cadmium-treated group and the control. Liver protein carbony1 (PCO) content and DNA content crosslinked with protein increased significantly with cadmium concentration, displaying an obvious concentration-effect relationship, but only at 0.05 and 0.1 mg·L-1 was the increase markedly significant. The results suggest that cadmium can induce protein oxidative damage and DNA damage; the primary mechanism may be generation of free radicals, followed by protein oxidative damage and DNA damage.
%K cadmium
%K ROS
%K carbony1 content
%K protein oxidative damage
%K DNA-protein crosslinks<br>镉
%K 活性氧自由基
%K 羰基含量
%K 蛋白质氧化损伤
%K DNA-蛋白质交联
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=9D46A6E50E376D69BA01DBF75E0E2972&yid=140ECF96957D60B2&vid=340AC2BF8E7AB4FD&iid=CA4FD0336C81A37A&sid=50BBDFAC8381694B&eid=AC1578C6BB9EBDEF&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=3&reference_num=24