Which form is that? The importance of selenium speciation and metabolism in the prevention and treatment of disease

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dc.contributor.authorWeekley, C.
dc.contributor.authorHarris, H.
dc.date.issued2013
dc.description.abstractThe biological activity of selenium is dependent upon its speciation. We aim to integrate selenium speciation and metabolism into a discussion of the mechanisms by which selenium exerts its biological activity. First, we present the current status of selenium in the prevention of cancer, cardiovascular and neurodegenerative diseases with particular attention paid to the results of major chemoprevention trials involving selenium supplementation. A comprehensive review of the current understanding of the metabolism of common dietary selenium compounds - selenite, selenomethionine, methylselenocysteine and selenocystine - is presented, with discussion of the evidence for the various metabolic pathways and their products. The antioxidant, prooxidant and other mechanisms of the dietary selenium compounds have been linked to their disease prevention and treatment properties. The evidence for these various mechanisms -in vitro, in cells and in vivo- is evaluated with emphasis on the selenium metabolites involved. We conclude that dietary selenium compounds should be considered prodrugs, whose biological activity will depend on the activity of the various metabolic pathways in, and the redox status of, cells and tissues. These factors should be considered in future laboratory research and in selecting selenium compounds for trials of disease prevention and treatment by selenium supplementation.
dc.description.statementofresponsibilityClaire M. Weekley and Hugh H. Harris
dc.identifier.citationChemical Society Reviews, 2013; 42(23):8870-8894
dc.identifier.doi10.1039/c3cs60272a
dc.identifier.issn0306-0012
dc.identifier.issn1460-4744
dc.identifier.orcidHarris, H. [0000-0002-3472-8628]
dc.identifier.urihttp://hdl.handle.net/2440/81896
dc.language.isoen
dc.publisherRoyal Soc Chemistry
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0985807
dc.rights© The Royal Society of Chemistry 2013
dc.source.urihttps://doi.org/10.1039/c3cs60272a
dc.subjectHumans
dc.subjectNeoplasms
dc.subjectCystine
dc.subjectReactive Oxygen Species
dc.subjectSelenium Compounds
dc.subjectOrganoselenium Compounds
dc.subjectSelenocysteine
dc.subjectSelenomethionine
dc.subjectSulfhydryl Compounds
dc.subjectDietary Supplements
dc.subjectSelenoproteins
dc.subjectClinical Trials as Topic
dc.subjectHistone Deacetylase Inhibitors
dc.titleWhich form is that? The importance of selenium speciation and metabolism in the prevention and treatment of disease
dc.typeJournal article
pubs.publication-statusPublished

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