Zobrazeno 1 - 10
of 109
pro vyhledávání: '"H. Vasken Aposhian"'
Autor:
H. Vasken Aposhian, Marisa F. Naujokas, Habibul Ahsan, William A. Suk, Joseph H. Graziano, Beth Anderson, Claudia Thompson
Publikováno v:
Environmental Health Perspectives
Background: Concerns for arsenic exposure are not limited to toxic waste sites and massive poisoning events. Chronic exposure continues to be a major public health problem worldwide, affecting hundreds of millions of persons. Objectives: We reviewed
Autor:
Uttam K. Chowdhury, H. Vasken Aposhian
Publikováno v:
Annals of the New York Academy of Sciences. 1140:325-334
Hamsters were exposed to sodium arsenite (173 mg As/L) in drinking water for 6 days and control hamsters were given tap water. Equal amounts of protein from the urinary bladder or liver extracts of control and arsenic-treated hamsters were labeled wi
Autor:
H. Vasken Aposhian, Michael J. Kopplin, Mihaela D. Avram, Robert A. Zakharyan, Uttam K. Chowdhury, Alba Hernández
Publikováno v:
Toxicology and Applied Pharmacology. 216:446-457
Inorganic arsenic is a human carcinogen to which millions of people are exposed via their naturally contaminated drinking water. Its molecular mechanisms of carcinogenicity have remained an enigma, perhaps because arsenate is biochemically transforme
Autor:
Robert A. Zakharyan, Michael L. Wollenberg, Mihaela D. Avram, H. Vasken Aposhian, Adriana Sampayo-Reyes
Publikováno v:
Toxicology and Applied Pharmacology. 198:327-335
This laboratory has studied the enzymology involved in the biotransformation of inorganic arsenic to dimethylarsinous acid (DMA(III)) and in human studies established that monomethylarsonous acid (MMA(III)) and DMA(III) appear in urine of people chro
Publikováno v:
Toxicology and Applied Pharmacology. 193:309-334
The aim of this review is to compare the metabolism, chemistry, and biological effects to determine if either of the industrial arsenicals (arsine and gallium arsenide) act like the environmental arsenic oxides (arsenite and arsenate). The metabolism
Autor:
Robert A. Zakharyan, Mihaela D. Avram, Michael L. Wollenberg, H. Vasken Aposhian, Michael J. Kopplin
Publikováno v:
Toxicology and Applied Pharmacology. 193:1-8
Arsenic compounds with a +3 oxidation state are more toxic than analogous compounds with a +5 oxidation state, for example, arsenite versus arsenate, monomethylarsonous acid (MMA(III)) versus monomethylarsonic acid (MMA(V)), and dimethylarsinous acid
Autor:
Hiroshi Yamauchi, H. Vasken Aposhian, Mariano E. Cebrián, Ellen K. Silbergeld, Christopher A. Loffredo
Publikováno v:
Environmental Research. 92:85-91
Estimating the nature and extent of human cancer risks due to arsenic (As) in drinking water is currently of great concern, since millions of persons worldwide are exposed to arsenic, primarily through natural enrichment of drinking water drawn from
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 46:373-377
Summary A short and efficient synthesis of sodium dimethylarsinate- 14 C is described. Incorporation of the label has been achieved by methylation of methyldiiodoarsine with iodomethane- 14 C. Product was precipitated and separated from sodium iodide
Publikováno v:
Chemical Research in Toxicology. 15:1318-1323
Sodium 2,3-dimercapto-1-propane sulfonate (DMPS) has been used to treat acute arsenic poisoning. Presumably DMPS functions by chelating some arsenic species to increase the excretion of arsenic from the body. However, the excreted complex of DMPS wit