Complement inhibition by soluble complement receptor type 1 improves microcirculation after rat liver transplantation
Recent observations provide evidence the complement is involved in the pathophysiology of ischemia/reperfusion injury. In this study, we assessed the impact of complement inhibition on hepatic micro-circulation and graft function using a rat model of liver transplantation.Methods Arterialized orthot...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1998
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| In: |
Transplantation
Year: 1998, Jahrgang: 66, Heft: 6, Pages: 717-722 |
| ISSN: | 1534-6080 |
| DOI: | 10.1097/00007890-199809270-00005 |
| Online-Zugang: | Verlag: https://doi.org/10.1097/00007890-199809270-00005 Verlag, lizenzpflichtig, Volltext: https://journals.lww.com/transplantjournal/fulltext/1998/09270/complement_inhibition_by_soluble_complement.5.aspx 
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| Verfasserangaben: | Thorsten G. Lehmann, Thomas A. Koeppel, Michael Kirschfink, Martha-Maria Gebhard, Christian Herfarth, Gerd Otto, Stefan Post |
MARC
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| 245 | 1 | 0 | |a Complement inhibition by soluble complement receptor type 1 improves microcirculation after rat liver transplantation |c Thorsten G. Lehmann, Thomas A. Koeppel, Michael Kirschfink, Martha-Maria Gebhard, Christian Herfarth, Gerd Otto, Stefan Post |
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| 520 | |a Recent observations provide evidence the complement is involved in the pathophysiology of ischemia/reperfusion injury. In this study, we assessed the impact of complement inhibition on hepatic micro-circulation and graft function using a rat model of liver transplantation.Methods Arterialized orthotopic liver transplantation was performed in Lewis rats after cold preservation (University of Wisconsin solution, 4°C, 24 h). Eight animals received the physiological complement regulator soluble complement receptor type 1 (sCR1) intravenously 1 min before reperfusion. Controls received Ringer's solution (n=8). Microvascular perfusion, leukocyte adhesion, and Kupffer cell phagocytic activity were studied 30-100 min after reperfusion by in vivo microscopy.Results.Microvascular perfusion in hepatic sinusoids was improved in the sCR1 group (87±0.7% vs. 50±1%; P<0.001). The number of adherent leukocytes was reduced in sinusoids (68.3±4.7 vs. 334.1±15.8 [adherent leukocytes per mm ≤ liver surface]; P<0.001) and in postsinusoidal venules after sCR1 treatment (306.6±21.8 vs. 931.6±55.9 [adherent leukocytes per mm ≤ endothelial surface]; P<0.001). Kupffer cell phagocytic activity was decreased in the sCR1 group compared to controls. Postischemic bile production reflecting hepatocellular function was increased by almost 200% (P=0.004) after complement inhibition. Plasmatic liver enzyme activity was decreased significantly upon sCR1 treatment, indicating reduced parenchymal cell injury.Conclusions.Our results provide further evidence that the complement system plays a decisive role in hepatic ischemia/reperfusion injury. We conclude that complement inhibition by sCR1 represents an effective treatment to prevent reperfusion injury in liver transplantation. | ||
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