Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Robert A. Zakharyan"'
Publikováno v:
Vacuum. 184:109964
The joint of the internal parts of various vacuum devices with adhesive allows you to simplify the assembly technology and reduce their cost. However, the use of adhesive leads to the release of volatile products into the internal volume of the devic
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
Publikováno v:
Acta Biochimica Polonica. 53:547-552
Human glutathione S-transferase omega 1-1 (hGSTO1-1) is a newly identified member of the glutathione S-transferase (GST) family of genes, which also contains alpha, mu, pi, sigma, theta, and zeta members. hGSTO1-1 catalyzes the reduction of arsenate,
Publikováno v:
Biomedicine & Pharmacotherapy. 60:238-244
Glutathione S-transferases (GSTs) are a family of multifunctional enzymes that are present in all living organisms. Their main function is the detoxification of electrophilic compounds. Glutathione conjugation is the major detoxification pathway avai
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
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
Publikováno v:
Chemical Research in Toxicology. 13:1181-1186
The formation of monomethylarsonous acid (MMA(III)) by tissue homogenates of brain, bladder, spleen, liver, lung, heart, skin, kidney, or testis of male Golden Syrian hamsters was assessed using [(14)C]monomethylarsonic acid (MMA(V)) as the substrate
Autor:
H. Vasken Aposhian, Gerald F. O'Malley, R M Maiorino, Mingsheng Ma, Richard C. Dart, Wayne A. Van Voorhies, Robert A. Zakharyan, Luke Yip, William R. Cullen, Paul Andrewes, Baoshan Zheng, Allison Titcomb, Mariano E. Cebrián, Sheila M. Healy, Mary M. Aposhian, X. Chris Le, Zhai Cheng
Publikováno v:
Toxicology and Applied Pharmacology. 165:74-83
The administration of sodium 2,3-dimercapto-1-propane sulfonate (DMPS) to humans chronically exposed to inorganic arsenic in their drinking water resulted in the increased urinary excretion of arsenic, the appearance and identification of monomethyla
Publikováno v:
Toxicology and Applied Pharmacology. 158:9-15
Inorganic arsenite is methylated by some, but not all, animal species to dimethylarsinic acid (DMA). The monomethyl compound containing arsenic in an oxidation state of +3 has been proposed as an intermediate. Using highly purified arsenic methyltran
Publikováno v:
Toxicology and Applied Pharmacology. 154:287-291
Although inorganic arsenic is methylated enzymatically by arsenic methyltransferases, which have been found in many mammalian livers, the detection of such enzymes has not been successful in surgically removed human livers. Results of the present exp