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Methyl mercury pharmacokinetics in man: a reevaluation.

Abstract：

:Data taken from Aberg et al. ((1969) Arch. Environ. Health 19, 478-484) and Miettinen et al. ((1971) Ann. Clin. Res. 3, 116-122) were analyzed by means of models that describe methyl mercury pharmacokinetics in man in terms of parent compound only (Model I) or in terms of parent compound plus metabolite, inorganic mercury (Model II). Fecal and urinary excretion of mercury are linear for both models. In Model I all excreted mercury arises from a common pool. This model successfully simulates the time profiles for body total mercury and fecal excretion but fails to explain the continuous increase in daily urinary mercury that occurs for several weeks following methyl mercury administration. In Model II fecal mercury arises from the methyl mercury compartment and urinary mercury from the inorganic mercury compartment. Simulations from this model are comparable to those from Model I for body total mercury and fecal excretion but are significantly more precise for urinary excretion. Model II also accounts for the observation (Miettinen et al., 1971) that blood mercury comprises a steadily declining proportion of body mercury burden for at least 91 days after methyl mercury dosing. Data simulated by means of Model II, using parameters estimated from Aberg's and Miettinen's data sets, predict methyl mercury half-lives of 51 and 56 days, respectively. These values are comparable to the methyl mercury half-life of 44 days reported by Smith et al. ((1994) Toxicol. Appl. Pharmacol. 128, 251-256) and are approximately 70% of half-lives reported by Aberg and Miettinen.

journal_name

Toxicol Appl Pharmacol

journal_title

Toxicology and applied pharmacology

authors

Smith JC,Farris FF

doi

10.1006/taap.1996.0078

subject

Has Abstract

pub_date

1996-04-01 00:00:00

pages

245-52

issue

2

eissn

0041-008X

issn

1096-0333

pii

S0041-008X(96)90078-2

journal_volume

137

pub_type

杂志文章

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