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【讲座问题】Arsenic exposure, metabolism, and health effects
【时 间】2024年3月28日 上午:10:30-12:00
【地 点】保定校区 教九报告厅
【主讲人】X. Chris Le,加拿大皇家科学院院士,首席科学家,Alberta大学优异教授
【主讲人简介】
X. Chris Le教授自1995年以来,在加拿大阿尔伯塔大学 (University of Alberta) 医学院任教,并在理学院化学系和公共康健学院情形康健专业兼职,于2006年建设剖析与情形毒理交织学科研究室、恒久担当主任。 在生命剖析化学、情形科学、分子毒理、公共卫生与康健等领域揭晓文章300余篇。Le教授曾获得加拿大自然科学与工程研究院揭晓的青年科学家奖、第一批加拿大首席科学家、加拿大化学会揭晓的剖析化学成绩奖和情形科学成绩奖、Alberta大学揭晓的优异导师奖、优异科研奖、以及大学最高声誉奖杯等二十多项声誉和奖励。2010年,Le教授中选为加拿大皇家科学院院士,2011年,中选为Alberta大学优异教授。
【报告内容简介】
Arsenic affects more than 200 million people around the world. Chronic exposure to inorganic arsenic increases the risk of many cancers (e.g., bladder, lung, and skin) and non-cancerous effects (e.g., diabetes and heart diseases). Environmental prevalence, biochemical complexity, toxicological effects, and regulatory priority continue to challenge arsenic researchers. We focus on developing analytical techniques to characterize arsenic species, assessing human exposure from water and food, studying arsenic metabolism, and investigating molecular mechanisms responsible for arsenic health effects. Mass spectrometry and liquid chromatography techniques have enabled the identification and quantification of trace arsenic species in the environmental and biological systems. Mechanistic studies on arsenic binding to proteins and inhibition of DNA repair have implicated co-carcinogenesis of arsenic. Studies of molecular interactions inside living cells have enabled imaging of biochemical processes. Our research on arsenic is enhanced by our development of analytical techniques and assays for DNA damage and DNA-protein interactions.