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Liver Failure Impairs the Intrahepatic Elimination of Interleukin-6, Tumor Necrosis Factor-Alpha, Hepatocyte Growth Factor, and Transforming Growth Factor-Beta #MMPMID26090463
Porowski D; Wirkowska A; Hryniewiecka E; Wyzgal J; Pacholczyk M; Paczek L
Biomed Res Int 2015[]; 2015 (?): 934065 PMID26090463show ga
The strategic location of the liver and its metabolic activity make it a key organ regulating homeostasis. Our purpose was to examine its participation in removal of cytokines: interleukin-6 (Il-6), tumor necrosis factor-alpha (TNF-alpha), hepatocyte growth factor (HGF), and transforming growth factor-beta (TGF-beta) from the portal circulation in human. 20 liver donors and 20 patients with end-stage liver failure were included in the study. Their blood was collected during liver transplantation from the portal, hepatic, and peripheral vein, and the hepatic artery and cytokines' concentrations were determined. Using the results the mathematical model of cytokine elimination by the liver was developed. In donors significantly lower levels of IL-6, TNF-alpha, HGF, and TGF-beta were detected in portal blood compared to hepatic vein. In patients with cirrhosis there were no significant differences of IL-6, TNF-alpha, and TGF-beta levels between portal and hepatic veins. Significantly higher level of HGF in hepatic compared to portal vein was observed. In healthy liver elimination of the cytokines prevailed over their synthesis, as reflected by the positive values of the elimination ratios. In the cirrhotic liver elimination ratios of Il-6, HGF, and TGF-beta were negative indicating the prevalence of intrahepatic synthesis of cytokines over their removal.
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Biomed+Res+Int 2015 ; 2015 (?): 934065
