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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Tissue distribution and elimination kinetics of polybrominated biphenyls (PBB) from rat tissue.

The concentration of polybrominated biphenyl (PBB) in serum in a large number of organs was determined in a population of rats for 36 weeks a single dose of PBB. Groups were killed at 6, 12, 24 and 36 weeks after exposure to PBB (1 mg/100g body wt, i.p.). Growth, weight gain and appearance of the rats and their internal organs were normal. Complex and varied relationships were found in tissue concentrations with time after PBB administration. Serum and fat had apparent first-order elimination kinetics with calculated half-times of 23.1 and 69.3 weeks, respectively. For five other tissues, apparent t 1/2s ranged from 9.0-63 weeks, while for four others, kinetics could not be determined from these 4 time points. It is likely that a substantial residue of PBB will still remain in the body of the rat at the end of its life span because of the persistence of PBB in lipid-rich tissues (adipose, adrenal, and brain).[1]


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