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The pharmacokinetics of dichloromethane. I. Disposition in B6C3F1 mice following intravenous and oral administration. 1986

M J Angelo, and A B Pritchard, and D R Hawkins, and A R Waller, and A Roberts

The tissue distribution and metabolism of dichloromethane (DCM; CH2Cl2) was investigated in B6C3F1 mice following iv or oral administration. The route of exposure and the composition of the dosing solution were found to have a significant effect on the pharmacokinetics. Following single iv doses of 10 or 50 mg [14C]DCM/kg dose-dependent metabolism to 14CO2 and 14CO and rapid pulmonary clearance of unchanged 14CH2Cl2 characterized the elimination of DCM from the body. The highest concentrations of 14CH2Cl2 were found in the liver, lung and kidney, with more than 50% of the total radioactivity in these tissues represented by the parent compound. When DCM was administered orally in single gavage doses for 14 consecutive days at treatment levels of 50 mg/kg in water or 500 and 1000 mg/kg in corn oil, rapid absorption and elimination of DCM characterized the treatment in water while distinctly slower trends were found for the doses in corn oil. No observable pharmacokinetic or metabolic effect resulted from repeated oral dosing over the 2-wk treatment period.

UI MeSH Term Description Entries
D007275 Injections, Intravenous Injections made into a vein for therapeutic or experimental purposes. Intravenous Injections,Injection, Intravenous,Intravenous Injection
D007408 Intestinal Absorption Uptake of substances through the lining of the INTESTINES. Absorption, Intestinal
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D008297 Male Males
D008752 Methylene Chloride A chlorinated hydrocarbon that has been used as an inhalation anesthetic and acts as a narcotic in high concentrations. Its primary use is as a solvent in manufacturing and food technology. Dichloromethane,Methylene Bichloride,Methylene Dichloride,Solaesthin,Bichloride, Methylene,Chloride, Methylene,Dichloride, Methylene
D001944 Breath Tests Any tests done on exhaled air. Breathalyzer Tests,Breath Test,Breathalyzer Test,Test, Breath,Test, Breathalyzer,Tests, Breath,Tests, Breathalyzer
D002245 Carbon Dioxide A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals. Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D002248 Carbon Monoxide Carbon monoxide (CO). A poisonous colorless, odorless, tasteless gas. It combines with hemoglobin to form carboxyhemoglobin, which has no oxygen carrying capacity. The resultant oxygen deprivation causes headache, dizziness, decreased pulse and respiratory rates, unconsciousness, and death. (From Merck Index, 11th ed) Monoxide, Carbon

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