TY - JOUR
T1 - Population toxicokinetics of benzene. Environmental Health Perspectives
JF - Environmental Health Perspectives
Y1 - 1996/12//
SP - 1405
EP - 1411
A1 - Frédéric Y. Bois
A1 - Elise T. Jackson
A1 - Kaija Pekari
A1 - Martyn T. Smith
AB - In assessing the distribution and metabolism of toxic compounds in the body, measurements are not always feasible for ethical or technical reasons. Computer modeling offers a reasonable alternative, but the variability and complexity of biological systems pose unique challenges in model building and adjustment. Recent tools from population pharmacokinetics, Bayesian statistical inference, and physiological modeling can be brought together to solve these problems. As an example, we modeled the distribution and metabolism of benzene in humans. We derive statistical distributions for the parameters of a physiological model of benzene, on the basis of existing data. The model adequately fits both prior physiological information and experimental data. An estimate of the relationship between benzene exposure (up to 10 ppm) and fraction metabolized in the bone marrow is obtained and is shown to be linear for the subjects studied. Our median population estimate for the fraction of benzene metabolized, independent of exposure levels, is 52% (90% confidence interval, 47-67%). At levels approaching occupational inhalation exposure (continuous 1 ppm exposure), the estimated quantity metabolized in the bone marrow ranges from 2 to 40 mg/day.
VL - 104
UR - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1469729/
IS - Suppl 6
U1 - 7.1

ER -