Abstract
Earlier studies have produced evidence for an association between work-related styrene exposure and cytogenetic damage, while more recent studies have failed to show such an association. In the present study, chromosome aberrations (CA) and sister chromatid exchanges (SCE) were measured in peripheral blood lymphocytes of 46 male workers employed in a fiber-reinforced plastic boat building factory and exposed to styrene. Two groups of 23 workers each, characterized by different exposure levels (ranges: 2–120 mg/m3 and 86–1389 mg/m3 ambient air) were studied, fifty-one controls matched by sex, age and smoking habits were included. Randomized blood samples were analyzed for cytogenetic damage separately in two laboratories. Interlaboratory differences in the scoring of CA and SCE were noted. However, increases of the considered cytogenetic endpoints in exposed vs control groups were consistently observed in both laboratories. Multivariate statistical analysis of pooled data revealed increases of CA ranging between 19% (RR=1.19; 95% C.I., 0.80–1.78; chromatid-type aberrations, low exposure group) and 144% (RR=2.44; 95% C.I., 1.26–4.70; chromosome-type aberrations, high exposure group). Parallel excess of SCE in styrene exposed workers was also observed, although at a lesser extent (RR=1.22; 95% C.I., 1.05–1.43, low exposure group; RR=1.26; 95% C.I., 1.07–1.47, high exposure group). These findings suggest the presence of a causal association between occupational exposure to styrene and cytogenetic damage in the plastic boat building factory that was the object of the study.
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Artuso, M., Angotzi, G., Bonassi, S. et al. Cytogenetic biomonitoring of styrene-exposed plastic boat builders. Arch. Environ. Contam. Toxicol. 29, 270–274 (1995). https://doi.org/10.1007/BF00212980
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DOI: https://doi.org/10.1007/BF00212980