An immunochemical assay was developed for the detection of metabolites excreted in urine as a result of occupational exposure to PAHs and nitro-PAHs.
These metabolites were analyzed in a competitive ELISA, using an existing antibody (4D5) that has been developed against 6-aminobenzo[a]pyrene coupled to bovine serum albumine (B[a]P-BSA).
A solid phase extraction (SPE) work-up procedure was optimized by dilution of pooled urine samples from rats exposed to 1-NP, in human urine.
The application was validated by comparison of test results with urinary excreted 1-hydroxypyrene (1-OH-P) levels in a study among 18 railroad workers.
Excretion of urinary metabolites was determined over two consecutive workdays.
The 14 h average excretion of metabolites as determined in the immunoassay was not related to levels of particulate matter in the breathing zones of workers, nor to 1-OH-P excretion levels of the day of urine collection.
However, it was significantly associated with the personal dust exposure of the day before (P<0.0001), suggesting slow excretion of urinary metabolites.
Smoking habits caused minor interference (P<0.1).
Mots-clés Pascal : Carburant diesel, Gaz échappement, Composé aromatique polycyclique, Composé nitro, Carcinogène, Particule en suspension, Exposition professionnelle, Homme, Médecine travail, Surveillance biologique, Urine, Liquide biologique, Méthode immunoenzymatique, Technique ELISA, Traction ferroviaire
Mots-clés Pascal anglais : Diesel fuel, Exhaust gas, Polycyclic aromatic compound, Nitro compound, Carcinogen, Suspended particle, Occupational exposure, Human, Occupational medicine, Biological monitoring, Urine, Biological fluid, Enzyme immunoassay, ELISA assay, Railroad traction
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0260161
Code Inist : 002B03M02. Création : 01/03/1996.