Abstract
To examine the effects of portal blood deprivation on energy metabolism of the liver, we studied: (1) the ketone body ratio (acetoacetate/beta-hydroxybutyrate) in liver tissue, which is in equilibrium with the free NAD+/NADH ratio in liver mitochondria, in the ligated lobe (LL) and nonligated lobe (NLL), (2) the hepatic energy charge [EC = (ATP + 1/2 ADP)/(ATP + ADP + AMP)] in both LL and NLL, and (3) the arterial blood ketone body ratio (BKBR) after left portal vein branch ligation (PBL) in rabbits. As found in LL after PBL, portal blood deprivation decreased the tissue ketone body ratio. The EC in LL significantly decreased after PBL, but recovered 7 days after PBL since the LL became atrophic. The BKBR remained within the normal range, even when 60% of the total liver was deprived of portal blood.
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