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Arsenic speciation in the environment
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Monomethylarsonous acid (MMA(III)) is more toxic than arsenite in Chang human hepatocytes.
Methylation has been considered to be the primary detoxication pathway of inorganic arsenic. Inorganic arsenic is methylated by many, but not all animal species, to monomethylarsonic acid (MMA(V)),Expand
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The implications of grassland and heathland management for the conservation of spider communities: a review
Both intensity and type of habitat management in grasslands and heathlands affect spider communities. With high intensity management, spider communities often lack diversity and are dominated by aExpand
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Methylated trivalent arsenic species are genotoxic.
The reactivities of methyloxoarsine (MAs(III)) and iododimethylarsine (DMAs(III)), two methylated trivalent arsenicals, toward supercoiled phiX174 RFI DNA were assessed using a DNA nicking assay. TheExpand
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DNA damage induced by methylated trivalent arsenicals is mediated by reactive oxygen species.
Arsenic is a human carcinogen; however, the mechanisms of arsenic's induction of carcinogenic effects have not been identified clearly. We have shown previously that monomethylarsonous acidExpand
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Arsenic Binding to Proteins
Arsenic is a trace element found in the earth’s crust at an average concentration of ∼5 μg/g (ppm). Although its relative abundance in the earth’s crust is about 54th, arsenic can become concentratedExpand
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Speciation of key arsenic metabolic intermediates in human urine.
Biomethylation is the major human metabolic pathway for inorganic arsenic, and the speciation of arsenic metabolites is essential to a better understanding of arsenic metabolism and health effects.Expand
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  • Open Access
Comparative inhibition of yeast glutathione reductase by arsenicals and arsenothiols.
Tri(gamma-glutamylcysteinylglycinyl)trithioarsenite (AsIII(GS)3) is formed in cells and is a more potent mixed-type inhibitor of the reduction of glutathione disulfide (GSSG) by yeast glutathioneExpand
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Composition and distribution of polycyclic aromatic hydrocarbon contamination in surficial marine sediments from Kitimat Harbor, Canada.
Surficial marine sediments from 20 sites within the Kitimat fjord system were analyzed for polycylic aromatic hydrocarbons (PAHs). Levels of the sum of the 16 USEPA priority pollutant PAHs variedExpand
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Relationships between student characteristics and self‐, peer and tutor evaluations of oral presentations
There are many influences on how assessors grade themselves and others. Oral presentations are useful for exploring such factors in peer, self‐ and tutor marked assessments, being rapidly completedExpand
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  • Open Access