Abstract:
BACKGROUND:Humans living near industrial point emissions can experience high levels of exposures to air pollutants. Map Ta Phut Industrial Estate in Thailand is the location of the largest steel, oil refinery, and petrochemical factory complexes in Southeast Asia. Air pollution is an important source of oxidative stress and reactive oxygen species, which interact with DNA and lipids, leading to oxidative damage and lipid peroxidation, respectively. OBJECTIVE:We measured the levels of malondialdehyde-deoxyguanosine (dG) adducts, a biomarker of oxidative stress and lipid peroxidation, in petrochemical workers, nearby residents, and subjects living in a control district without proximity to industrial sources. DESIGN:We conducted a cross-sectional study to compare the prevalence of malondialdehyde-dG adducts in groups of subjects experiencing various degrees of air pollution. RESULTS:The multivariate regression analysis shows that the adduct levels were associated with occupational and environmental exposures to air pollution. The highest adduct level was observed in the steel factory workers. In addition, the formation of DNA damage tended to be associated with tobacco smoking, but without reaching statistical significance. A nonsignificant increase in DNA adducts was observed after 4-6 years of employment among the petrochemical complexes. CONCLUSIONS:Air pollution emitted from the Map Ta Phut Industrial Estate complexes was associated with increased adduct levels in petrochemical workers and nearby residents. Considering the mutagenic potential of DNA lesions in the carcinogenic process, we recommend measures aimed at reducing the levels of air pollution.
journal_name
Environ Health Perspectjournal_title
Environmental health perspectivesauthors
Peluso M,Srivatanakul P,Munnia A,Jedpiyawongse A,Ceppi M,Sangrajrang S,Piro S,Boffetta Pdoi
10.1289/ehp.0900907subject
Has Abstractpub_date
2010-01-01 00:00:00pages
55-9issue
1eissn
0091-6765issn
1552-9924journal_volume
118pub_type
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