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Effects of Dietary Intake of arsenosugars and Other Organic Arsenic Species on Studies of Arsenic Methylation Efficiency in Humans

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Environment & Health 2023年第4期1卷 236-248页

作者： Tetiana Davydiuk Jeffrey Tao Xiufen Lu X.Chris Le Department of Chemistry University of AlbertaEdmontonAlbertaCanada T6G 2G2 Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonAlbertaCanada T6G 2G3

Extensive research has used dimethylarsinic acid(DMA)in urine as a marker of arsenic *** premise is that humans methylate inorganic arsenicals to monomethylarsonic acid(MMA)and DMA and excrete these arsenic species into the ***,DMA in urine not only comes from the methylation of inorganic arsenic but also could be a result of metabolism of other arsenic species,such as arsenosugars and *** environmental health and epidemiological studies of arsenic methylation might have overlooked confounding factors that contribute to DMA in *** we critically evaluate reported studies that used methylation indexes,concentration ratios of methylated arsenicals,or the percentage of DMA in urine as markers of arsenic methylation *** intake of arsenosugars potentially confounds the calculation and interpretation of the arsenic methylation *** studies have not considered incidental dietary intake of arsenosugars,arsenolipids,and other organic arsenic *** studies should consider the dietary intake of diverse arsenic species and their potential effect on the urinary concentrations of DMA.

关键词： arsenic exposure arsenosugars arsenolipids confounding dimethylarsinic acid metabolism seafood consumption speciation urine analysis

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Arsenobetaine:the ongoing mystery

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National Science Review 2016年第4期3卷 451-458页

作者： Aleksandra Popowich Qi Zhang X.Chris Le Department of Chemistry University of Alberta Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyUniversity of Alberta

Arsenobetaine(As B) is a non-toxic organoarsenical identiied as a major arsenic species in marine animals and a number of terrestrial *** its irst identiication nearly 40 years ago,numerous studies investigating the biosynthesis and function of As B have been carried out,although molecular mechanisms have not been fully *** and how is As B formed? Why do marine animals acquire high concentrations of As B? his review briely summarizes the current progress of As B research toward understanding its origin,function and the putative pathways for its *** paper also suggests potential future studies in the atempt to solve the As B mystery.

关键词： arsenic arsenobetaine arsenocholine arsenosugars biosynthesis arsenic metabolism speciation

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