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. 1972 Apr;127(2):387-97.
doi: 10.1042/bj1270387.

The time-course of the effects of ethanol on the redox and phosphorylation states of rat liver

R L Veech, R Guynn, D Veloso

The time-course of the effects of ethanol on the redox and phosphorylation states of rat liver

R L Veech et al. Biochem J. 1972 Apr.

Abstract

1. The time-course of the effects of ethanol administration on the metabolite concentrations, redox states and phosphorylation state was studied in the freeze-clamped liver of starved rats. The response was found to vary with the time after ethanol administration. 2. Administration of ethanol caused an immediate decrease in the [NAD(+)]/[NADH] ratio of both cytoplasm and mitochondria, which persisted over the 30min studied. 3. The free cytoplasmic [NADP(+)]/[NADPH] ratio in liver decreases immediately after ethanol administration but returns nearly to control values after 15min. 4. The cytoplasmic [ATP]/[ADP][HPO(4) (2-)] ratio is elevated 15min after ethanol administration in the starved rat. 5. The rapid and large changes in most metabolite concentrations measured appeared to result from the maintenance of near-equilibrium in a wide interlinked network. 6. Differences between fed and starved rats 15min after ethanol administration were slight.

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