Abstract
The metabolism of chloral hydrate (CH) under anoxic conditions was investigated in the non-recirculating, hemoglobin-free liver perfusion system. CH uptake in the anoxic liver decreased to about 80% of that in the oxygen-supplied liver. The reduction of CH to trichloroethanol (TCE) increased and the oxidation of CH to trichloroacetic acid (TCA) decreased. The TCE/TCA ratio increased; however, the total trichloro compounds, that is TCE and TCA, were not significantly altered by anoxia. Though approximate 14% of the CH infused into the oxygen-supplied liver was changed to substances other than TCE or TCA, the unknown part was a very small portion in the anoxic liver. The decrease in CH uptake, by the anoxic liver, is thought to be equivalent to the decrease of the unknown metabolites. The TCE/TCA ratio under anoxia was also altered by pyruvate or lactate infusion.
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