Accumulation and toxicity of monophenyl arsenicals in rat endothelial cells

Hirano, S., Kobayashi, Y., Hayakawa, T., Cui, X., Yamamoto, M., Kanno, S. and Shraim, A. (2005) Accumulation and toxicity of monophenyl arsenicals in rat endothelial cells. Archives Of Toxicology, 79 1: 54-61.


Author Hirano, S.
Kobayashi, Y.
Hayakawa, T.
Cui, X.
Yamamoto, M.
Kanno, S.
Shraim, A.
Title Accumulation and toxicity of monophenyl arsenicals in rat endothelial cells
Journal name Archives Of Toxicology  (ERA 2012 Listed)    (ERA 2010 Rank B)   Check publisher's open access policy
Publication date 2005
Sub-type Article
DOI 10.1007/s00204-004-0598-4
Volume number 79
Issue number 1
ISSN 0340-5761
Start page 54
End page 61
Total pages 8
Editor H. Bolt
Place of publication New York
Publisher Springer
Collection year 2005
Language eng
Subject C1
321299 Public Health and Health Services not elsewhere classified
730210 Environmental health
Abstract Clark 1 (diphenylarsine chloride) and Clark 2 ( diphenylarsine cyanide) were used as chemical weapon agents (CWA), and the soil contamination by these CWA and their degraded products, diphenyl and phenyl arsenicals, has been one of the most serious environmental issues. In a series of comparisons in toxicity between trivalent and pentavalent arsenicals we investigated differences in the accumulation and toxicity of phenylarsine oxide (PAO(3+)) and phenylarsonic acid (PAA(5+)) in rat heart microvascular endothelial cells. Both the cellular association and toxicity of PAO(3+) were much higher than those of PAA(5+), and LC50 values of PAO(3+) and PAA(5+) were calculated to be 0.295 muM and 1.93 mM, respectively. Buthionine sulfoximine, a glutathione depleter, enhanced the cytotoxicity of both PAO(3+) and PAA(5+). N-Acetyl-L-cysteine (NAC) reduced the cytotoxicity and induction of heme oxygenase-1 (HO-1) mRNA in PAO(3+)-exposed cells, while NAC affected neither the cytotoxicity nor the HO-1 mRNA level in PAA(5+)-exposed cells. The effect of NAC may be due to a strong affinity of PAO(3+) to thiol groups because both NAC and GSH inhibited the cellular accumulation of PAO(3+), but PAA(3+) increased tyrosine phosphorylation levels of cellular proteins. These results indicate that the inhibition of protein phosphatases as well as the high affinity to cellular components may confer PAO(3+) the high toxicity.
Keyword phenylarsine oxide
phenylarsonic acid
cytotoxicity
endothelial cell
heme oxygenase-1
N-acetyl-L-cysteine
glutathione
buthionine sulfoximine
inductively coupled plasma mass spectrometry
Lung Epithelial-cells
Warfare Agents
Organoarsenic Compounds
Methylated Arsenicals
Dimethylarsinic Acid
In-vitro
Trivalent
Exposure
Difference
Mice
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Access Statistics: 130 Abstract Views  -  Detailed Statistics
Created: Wed, 15 Aug 2007, 06:26:50 EST