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Influence of temporary ischemia on energetic functions of rat liver in early and late reperfusion period

Jacek Ziaja, Artur Caban, Grzegorz Oczkowicz, Marcin Kamiński, Stanisław Kuśmierski

Med Sci Monit 2001; 7(3): BR387-396 :: ID: 509921

Abstract

Energetic function impairment is one of the main reasons of liver ischemia-reperfusion injury. The aim of the study was to estimate the influence of temporary rat liver ischemia on energetic functions of the organ in the early and late reperfusion period and to answer the question whether the reduction of destructive factors release in sinusoids in the early phase of reperfusion can prevent liver energetic function impairment. To perform the experiment 55 Wistar rats divided into 5 experimental groups were used. 60 min. partial ischemia of the liver was applied, with 30 min, 72 h and 5 days reperfusion period. Suppression of KC was performed by intravenous administration of GdCl3. In the group of animals subjected to liver ischemia a considerable decrease of reaction to SDH and LDH activity was observed in the reperfusion period. In animals with KC suppression the loss of reaction to SDH intensity in zones I of acini was insignificant and the decrease of reaction to LDH was more orderly and proceeded in a more regular manner. The value of AKBR fell significantly after 30 min. of reperfusion in both groups of animals subjected to ischemia, while the serum level of AspAT and LDH increased rapidly. Temporary ischemia of the rat liver induces a decrease of the organ energetic functions in the early and late reperfusion period. The elimination of Kupffer cell activity in the early reperfusion phase does not prevent liver energetic functions impairment, but reduces the time in which they return to initial values in remote observation.

Keywords: Liver, Ischemia, Reperfusion, hepatocyte, Mitochondria, arterial ketone body ratio

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750