Evaluation of Butadiene and Isopropene Health Risks. International Symposium. Blaine, Washington (USA), 1995/06/27.
Occupational exposure levels to 1,3-butadiene (BD) are variable but generally below 1 ppm in the European process industry.
A preliminary analysis showed that hemoglobin adduct levels of butadiene monoxide (BMO) were increased among the worker groups with higher potential exposure to BD (process work, bomb voiding, repair duties) than among less exposed workers in maintenance and laboratory or control persons.
In the same workers no exposure related effects were seen in the cytogenetic parameters studied, i.e. chromosomal aberrations, sister chromatid exchanges or micronuclei in peripheral blood lymphocytes.
However, the glutathione-S-transferase polymorphism in the Tl gene might play a role in determining interindividual sensitivity to BD-induced chromosomal aberrations.
Chromosomal aberrations (gaps excluded) were significantly (P<0.05) increased among the workers lacking the GSTTI gene as compared to the BD workers with the gene, while the other polymorphic GS7M1 gene showed no association with the cytogenetic parameters.
More work needs to be done to study the adducts by other active BD metabolites than BMO and the role of the genetic polymorphisms controlling the variability of individual responses.
Mots-clés Pascal : Butadiène, Exposition professionnelle, Toxicité, Adduit moléculaire, Hémoglobine, Aberration chromosomique, Homme, Surveillance biologique, Mutagène, Déterminisme génétique, Médecine travail
Mots-clés Pascal anglais : Butadiene, Occupational exposure, Toxicity, Molecular adduct, Hemoglobin, Chromosomal aberration, Human, Biological monitoring, Mutagen, Genetic inheritance, Occupational medicine
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0027030
Code Inist : 002B03N. Création : 21/05/1997.