Objectives-Chloroplatinates are potent allergens but other soluble platinum compounds such as tetraammine platinum dichloride (TPC) do not provoke reactions in subjects who are sensitive to chloroplatinates.
TPC has been used in the manufacture of autocatalysts for 20 years.
This study analyses 20 year data on exposure to soluble platinum compounds and medical surveillance to confirm that TPC is not allergenic.
Methods-Workers in three distinct operations were exposed to soluble platinum compounds as chloroplatinates, chloroplatinates with TPC, or to TPC alone.
Results of personal air sampling for soluble platinum compounds were compared together with the results of medical surveillance.
The levels of exposure to soluble platinum compounds in each operation were comparable but the incidence of allergy was significantly different.
In a subgroup of workers consistently exposed to chemical processes in each operation, the cumulative chance of being sensitised after 5 years of exposure was estimated as 51% for chloroplatinate exposure, 33% for mixed exposure, and 0% for TPC alone.
The differences in sensitisation rates could not be explained by age, sex, and atopy.
Nor could they be explained by the increased frequency of smoking in the workers with chloroplatinate exposure, despite the markedly higher risk of sensitisation in smokers.
The differences could only be explained by the chemical stability of TPC. (...)
Mots-clés Pascal : Platine composé, Exposition professionnelle, Médecine travail, Industrie métal précieux, Etude longitudinale, Allergie, Homme, Teneur air ambiant, Lieu travail, Sensibilisation, Rétrospective, Surveillance, Prick test, Immunopathologie
Mots-clés Pascal anglais : Platinum compound, Occupational exposure, Occupational medicine, Precious metal industry, Follow up study, Allergy, Human, Ambient air concentration, Work place, Sensitization, Retrospective, Surveillance, Prick test, Immunopathology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0158217
Code Inist : 002B06C05. Création : 16/11/1999.