Possible Role of Dimethylarsinous Acid in Dimethylarsinic Acid-Induced Urothelial Toxicity and Regeneration in the Rat

2002 ◽  
Vol 15 (9) ◽  
pp. 1150-1157 ◽  
Author(s):  
Samuel M. Cohen ◽  
Lora L. Arnold ◽  
Eva Uzvolgyi ◽  
Martin Cano ◽  
Margaret St. John ◽  
...  
Keyword(s):  
Dimethylarsinic Acid ◽  
Dimethylarsinous Acid

Speciation of Dimethylarsinous Acid and Trimethylarsine Oxide in Urine from Rats Fed with Dimethylarsinic Acid and Dimercaptopropane Sulfonate

2003 ◽  
Vol 75 (23) ◽  
pp. 6463-6468 ◽  
Author(s):  
Xiufen Lu ◽  
Lora L. Arnold ◽  
Samuel M. Cohen ◽  
William R. Cullen ◽  
X. Chris Le
Keyword(s):  
Dimethylarsinic Acid ◽  
Dimethylarsinous Acid ◽  
Trimethylarsine Oxide

scholarly journals The contents of risk elements, arsenic speciation, and possible interactions of elements and betalains in beetroot (Beta vulgaris, L.) growing in contaminated soil

2010 ◽  
Vol 5 (5) ◽  
pp. 692-701 ◽  
Author(s):  
Jiřina Száková ◽  
Jaroslav Havlík ◽  
Barbora Valterová ◽  
Pavel Tlustoš ◽  
Walter Goessler
Keyword(s):  
Beta Vulgaris ◽  
Contaminated Soil ◽  
Phosphate Buffer ◽  
Arsenic Speciation ◽  
Arsenic Concentration ◽  
Dimethylarsinic Acid ◽  
Total Arsenic ◽  
Soil Arsenic ◽  
Risk Element

AbstractThe effect of enhanced soil risk element contents on the uptake of As, Cd, Pb, and Zn was determined in two pot experiments. Simultaneously, transformation of arsenic and its compounds in beetroot (Beta vulgaris L.) plants was investigated. The mobile fractions of elements were determined in 0.05 mol L−1 (NH4)2SO4 extracts and did not exceed 2% of total soil arsenic, 9% of total cadmium, 3% of total lead, and 8% of total zinc, respectively. Although the soils were extremely contaminated the mobile portions of the elements represented only a small fragment of the total element content. Arsenic contents in beet plants reached up to 25 mg As kg−1 in roots and 48 mg As kg−1 in leaves in the soil characterized by the highest mobile arsenic portion. Arsenic portions extractable with water and phosphate buffer from the beetroot samples did not show significant differences between the extraction agents but the extractability was affected by the arsenic concentration. Arsenic was almost quantitatively extractable from the samples with the lowest total arsenic concentration, whereas in the samples with the highest total arsenic concentration less than 25% was extractable. Arsenate was the dominant arsenic compound in the extracts (70% in phosphate buffer, 50% in water extracts). A small portion of dimethylarsinic acid, not exceeding 0.5%, was detected only in the sample growing in the soil with the highest arsenic concentration. The role of betalains (betanin, isobetanin, vulgaxanthin I and vulgaxanthin II) in transformation/detoxification of arsenic in plants was not confirmed in this experiment because the plants were able to grow in the contaminated soil without any symptoms of arsenic toxicity.

The response of tomato (Lycopersicon esculentum) to different concentrations of inorganic and organic compounds of arsenic

Biologia ◽  
2006 ◽  
Vol 61 (1) ◽  
Author(s):  
Pavel Tlustoš ◽  
Jiřina Száková ◽  
Daniela Pavlíková ◽  
Jiří Balík
Keyword(s):  
Arsenic Concentration ◽  
Vegetation Period ◽  
Dimethylarsinic Acid ◽  
Arsenic Toxicity ◽  
Arsenic Compounds ◽  
Tomato Plants ◽  
Methylarsonic Acid ◽  
Cultivation Substrate ◽  
Transformation Processes

AbstractTomato plants were cultivated in greenhouse and water solutions of arsenite (As(III)), arsenate (As(V)), methylarsonic acid (MA) and dimethylarsinic acid (DMA) were applied individually into cultivation substrate at two As levels, 5 and 15 mg kg−1 of the substrate. Comparing the availability of arsenic compounds increased in order arsenite = arsenate < MA < DMA where the arsenic contents in plants decreased during vegetation period. Within a single plant, the highest arsenic concentration was found in roots followed in decreasing order by leaves, stems, and fruits regardless of arsenic compound applied. Arsenic toxicity symptoms reflected in suppressed growth of plants and a lower number and size of fruits were most significant with DMA treatment. However, the highest accumulation of arsenic by plants growing in the soil containing DMA was caused by higher mobility of this compound in the soil due to its lower sorption affinity. Our results confirmed substantial role of transformation processes of arsenic compounds in soil in uptake and accumulation of arsenic by plants.

scholarly journals Protective role of metallothionein (I/II) against pathological damage and apoptosis induced by dimethylarsinic acid

2003 ◽  
Vol 10 (1) ◽  
pp. 91 ◽  
Author(s):  
Guang Jia ◽  
Yi-Qun Gu ◽  
Kung-Tung Chen ◽  
You-Yong Lu ◽  
Lei Yan ◽  
...  
Keyword(s):  
Protective Role ◽  
Dimethylarsinic Acid
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