Next Article in Journal
Biomarkers of Oxidative Stress and Heavy Metal Levels as Indicators of Environmental Pollution in African Cat Fish (Clarias gariepinus) from Nigeria Ogun River
Previous Article in Journal
Synthesis and Photoirradiation of Isomeric Ethylchrysenes by UVA Light Leading to Lipid Peroxidation
Int. J. Environ. Res. Public Health 2007, 4(2), 153-157; doi:10.3390/ijerph2007040010

UVA Photoirradiation of Methylated Benzo[a]pyrene and Benzo[e]pyrene leading to Induction of Lipid Peroxidation

1,* , 2 and 2
1 Department of Pharmacology and Toxicology, School of Medicine, University of Puerto Rico, P.O. Box 365067, San Juan, Puerto Rico 2 National Center for Toxicological Research, Jefferson, AR 72079, USA
* Author to whom correspondence should be addressed.
Received: 30 November 2006 / Accepted: 15 June 2007 / Published: 30 June 2007
View Full-Text   |   Download PDF [91 KB, uploaded 19 June 2014]   |  


Polycyclic aromatic hydrocarbons (PAHs) are widespread genotoxic environmental pollutants and potentially pose a health risk to humans. Although the biological and toxicological activities, including metabolism, mutagenicity and carcinogenicity of PAHs have been thoroughly studied, their phototoxicity and photo-induced biological activities have not been well examined. In this research, we studied the photoirradiation of isomeric methylbenzo[a]pyrene (MBaP) and methylbenzo[e]pyrene (MBeP) by UVA light in the presence of a lipid, methyl linoleate, and evaluated the potential of these compounds to induce lipid peroxidation. The compounds chosen for study included BaP, 3-MBaP, 4-MBaP, 6-MBaP, 7-MBaP, 10-MBaP, BeP, 4-MBeP, and 9-MBeP. The results indicate that upon photoirradiation by UVA at 7 and 21 J/cm2, these compounds induced lipid peroxidation. The levels of the induced lipid peroxidation were similar among BaP and the isomeric MBaPs, and among the BeP and MBePs, with the BaP group higher than the BeP group. There was also a co-relation between the UV A light dose and the level of lipid peroxidation induced. Lipid peroxide formation was inhibited by NaN3 (singlet oxygen and free radical scavenger) and was enhanced by the presence of deuterium oxide (D2O) (extends singlet oxygen lifetime). These results suggest that photoirradiation of MBaPs and MBePs by UVA light generates reactive oxygen species (ROS), which induce lipid peroxidation.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Sáenz, D.H.; Xia, Q.; Fu, P.P. UVA Photoirradiation of Methylated Benzo[a]pyrene and Benzo[e]pyrene leading to Induction of Lipid Peroxidation. Int. J. Environ. Res. Public Health 2007, 4, 153-157.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert