Hepatic hypoperfusion after intestinal reperfusion. Surgery 1996 Feb;119(2):151-60
Date
02/01/1996Pubmed ID
8571200DOI
10.1016/s0039-6060(96)80163-2Scopus ID
2-s2.0-0030071420 (requires institutional sign-in at Scopus site) 42 CitationsAbstract
BACKGROUND: Intestinal ischemia-reperfusion injury (IIR) induces hepatic and pulmonary dysfunction and thus has been used as a model of multiple organ failure syndrome. This study examines the hypothesis that hepatic blood flow is markedly reduced in this injury model.
METHODS: Sprague-Dawley rats underwent 120 minutes of intestinal ischemia and 60 minutes of reperfusion (IIR). Hepatic blood flow was measured with radiolabeled microspheres and Doppler flow probes. Hepatic dysfunction was quantitated by measuring bile flow and serum alanine aminotransferase and hepatic tissue adenosine triphosphate levels. Sham-operated animals served as controls.
RESULTS: Intestinal ischemia reduced portal flow by 66% when compared with sham-operated animals (p = 0.0001) but had no effect on hepatic arterial flow. In contrast, reperfusion reduced hepatic artery flow by 80% when compared with controls (p = 0.002) with most of this change occurring within 5 minutes of reperfusion. IIR induced a 63% reduction in bile flow (p < 0.05), a fivefold rise in serum alanine aminotransferase level (p < 0.0002), and a 33% reduction in hepatic adenosine triphosphate level (p < 0.05).
CONCLUSIONS: These data suggest that IIR induces profound hepatic hypoperfusion, which is temporally related to acute hepatic dysfunction. This observation suggests that hepatic ischemia may contribute to IIR-induced liver injury.
Author List
Turnage RH, Kadesky KM, Myers SI, Guice KS, Oldham KTMESH terms used to index this publication - Major topics in bold
Alanine TransaminaseAnalysis of Variance
Animals
Cesium Radioisotopes
Hepatic Artery
Intestines
Ischemia
Liver
Male
Microspheres
Muscle, Smooth, Vascular
Portal Vein
Rats
Rats, Sprague-Dawley
Reference Values
Regional Blood Flow
Reperfusion
Ruthenium Radioisotopes
