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Nephrotoxins: Widespread Role of Oxidative Stress and Electron Transfer

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Kidney toxicity comprises an important type of hospital admission with associated high costs. Large numbers of chemicals are involved comprising a wide variety of classes, both organic and inorganic. These include therapeutic drugs, radiocontrast agents, carcinogens, metals, abused drugs, and industrial chemicals. This review provides extensive evidence for participation of oxidative stress (OS) and electron transfer (ET) as a unifying framework. Application is made to all the main classes of nephrotoxins, in addition to many miscellaneous types. We believe it is not coincidental that the vast majority of these substances incorporate ET functionalities (quinone, metal complex, ArNO2, or conjugated iminium) either per se or in metabolites, potentially giving rise to reactive oxygen species (ROS) by redox cycling. Some categories, e.g., radiation, radiocontrast agents, and peroxides, appear to generate OS by non-ET routes. For completeness, other theories are also addressed a multifaceted approach appears the most logical. The ET-OS viewpoint should increase understanding and contribute to prevention, e.g., use of antioxidants.
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Keywords: abused drugs; carcinogens; electron transfer; halogenated hydrocarbons; nephrotoxins; oxidative stress; radiation; radiocontrast; radiocontrast agents; therapeutic drugs

Document Type: Review Article

Publication date: 2002-04-01

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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