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Cytogenetic analysis using fluorescence in situ hybridization (FISH) to evaluate occupational exposure to carcinogens. | LitMetric
Chromosomal aberrations determined by conventional method or fluorescence in situ hybridization (FISH) technique with whole chromosome painting are used as biomarkers of effect. Groups occupationally exposed to 1,3-butadiene (BD), acrylonitrile, ethyl benzene and benzene in petrochemical industry, and carcinogenic polycyclic aromatic hydrocarbons (c-PAHs) from ambient air were followed by conventional method and FISH painting for chromosomes # 1 and # 4, in total 383 subjects, including controls. No effect was observed by either method with exposure to 1,3-butadiene < 1mg/m(3) and acrylonitrile < 0.3mg/m(3). Ethyl benzene and benzene exposure significantly increased chromosomal aberrations by both methods, which decreased after the implementation of preventive measures. The genomic frequency of translocations by FISH calculated as FG/100 was significantly increased in city policemen versus control group exposed to c-PAHs from ambient air (1.72+/-1.57 versus 1.25+/-1.11, P<0.05). The method of FISH with whole chromosome painting seems to be more sensitive to detect chromosomal injury by occupational exposure to carcinogens than conventional method.
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