Postmortem tissue levels of polychlorinated biphenyls in female rhesus monkeys after more than six years of daily dosing with Aroclor 1254 and in their non-dosed offspring.
Polychlorinated biphenyl (PCBs) analyses were made on prenecropsy blood samples and postmortem adipose, liver, kidney, and brain tissues from female rhesus monkeys fed a daily dose of 0,5,20,40, or 80 mug Aroclor 1254/kg body weight for approximately 6 years.
During this time, the females were bred with non-dosed males.
All resulting offspring were nursed for 22 weeks and fed no additional PCBs until they were necropsied at approximately 120 weeks after birth.
PCBs were also measured in necropsied infant tissues to determine PCB levels due to intake of PCB-contaminated milk from the dosed dams, in addition to in utero exposure.
Polychlorinated biphenyl levels in all tissues of the adult monkeys increased with their dosage.
The highest PCB levels were found in adipose tissue and the lowest levels were found in the brain.
Polychlorinated biphenyl residues in the cortex of the kidney were lower than in the medulla, while in the brain no appreciable differences were observed between the occipital and frontal lobes.
Necropsy tissues of infants from dosed dams contained more PCBs than those nursed by controls, but less than tissues from stillborn infants.
Although no differences were observed between PCB tissue levels from monkeys having offspring and those having no offspring, those having a stillborn infant had higher PCB levels in their tissues than those with a viable infant.
Mots-clés Pascal : Biphényle(polychloro), Accumulation biologique, Tissu, Postmortem, Femelle, Adulte, Lactation, Gestation, Animal allaité, Pollution, Macaca mulatta, Homme, Simioidea, Primates, Mammalia, Vertebrata, Cercopithecidae
Mots-clés Pascal anglais : Polychlorobiphenyl, Biological accumulation, Tissue, Postmortem, Female, Adult, Lactation, Pregnancy, Suckling animal, Pollution, Macaca mulatta, Human, Simioidea, Primates, Mammalia, Vertebrata
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0407767
Code Inist : 002A14D05H4. Création : 01/03/1996.