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Inhal Toxicol

Title:		"An effort to test the embryotoxicity of benzene, toluene, xylene, and formaldehyde to murine embryonic stem cells using airborne exposure technique"
Author(s):		Shen S; Yuan L; Zeng S;
Address:		"Department of Pharmaceutical Analysis and Drug Metabolism, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China"
Journal Title:		Inhal Toxicol
Year:		2009
Volume:		21
Issue:		12
Page Number:		973 - 978
DOI:		10.1080/08958370802687493
ISSN/ISBN:		1091-7691 (Electronic) 0895-8378 (Linking)
Abstract:		"Benzene, toluene, xylene, and formaldehyde are well-known indoor air pollutants, especially after house decoration. They are also common pollutants in the working places of the plastic industry, chemical industry, and leather industry. It has been reported that these pollutants cause people to be irritated, sick, experience a headache, and be dizzy. They also have the potential to induce asthma, aplastic anemia, and leukemia, even cause abortion or fetus malformation in humans. In this study, the airborne toxicity of benzene, toluene, xylene, and formaldehyde to murine embryonic stem cells (mES cells) were tested using airborne exposure technique to evaluate the mES cell airborne exposure model on embryotoxicity prediction. Briefly, mES cells were cultured on Transwell inserts and were exposed to an airborne surrounding of test chemicals in a chamber for 1 h at 37 degrees C. Cytotoxicity was determined using the MTT assay after further culture for 18 h at 37 degrees C in normal medium. The airborne IC(50) (50% inhibition concentration) of benzene, toluene, xylene, and formaldehyde derived from the fitted dose-response curves were 17,400 +/- 1290, 16,000 +/- 250, 4680 +/- 500, and 620 +/- 310 ppm, respectively. Formaldehyde was found to be the compound most toxic to mES cells compared to benzene homologues. The toxicity data had good correlation with the in vivo data. The results showed that the mES airborne exposure model may be used to predict embryotoxicity of volatile organic compounds"
Keywords:		"Air Pollutants, Occupational/*toxicity Air Pollution, Indoor/*adverse effects Algorithms Animals Atmosphere Exposure Chambers Cells, Cultured Coloring Agents Data Interpretation, Statistical Dose-Response Relationship, Drug Embryonic Stem Cells/*drug effe;"
Notes:		"MedlineShen, Shuijie Yuan, Lingmin Zeng, Su eng England 2009/07/29 Inhal Toxicol. 2009 Oct; 21(12):973-8. doi: 10.1080/08958370802687493"