Published in:
01-02-2004 | Experimental
Effects of C1 esterase inhibitor administration on intestinal functional capillary density, leukocyte adherence and mesenteric plasma extravasation during experimental endotoxemia
Authors:
Christian Lehmann, Jürgen Birnbaum, Carsten Lührs, Oskar Rückbeil, Claudia Spies, Sabine Ziemer, Matthias Gründling, Dragan Pavlovic, Taras Usichenko, Michael Wendt, Wolfgang J. Kox
Published in:
Intensive Care Medicine
|
Issue 2/2004
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Abstract
Objective
To determine the effects of C1 esterase inhibitor (C1-INH) administration on intestinal functional capillary density, leukocyte adherence, and mesenteric plasma extravasation during experimental endotoxemia.
Design and setting
Prospective, randomized, controlled animal study in the experimental laboratory of a university.
Subjects
42 male Wistar rats.
Interventions
The animals were divided into three groups. One half of the animals of each group underwent studies of intestinal functional capillary density and leukocyte adherence on venular endothelium by intravital fluorescence microscopy. In the other half of the animals mesenteric plasma extravasation (FITC albumin) was determined by intravital fluorescence microscopy. Treatment groups received endotoxin infusion of 2.5 mg/kg per hour (group 2 and 3) and 100 U/kg b.w. C1-INH (group 3) during the 2 h of endotoxemia.
Measurements and results
Endotoxemia resulted in a significant decrease in mucosal functional capillary density (18.5% vs. controls), which was reduced by C1-INH administration (9.5%). Treatment with C1-INH also significantly attenuated intestinal leukocyte adherence in submucosal venules (35% vs. endotoxin group) and mesenteric plasma extravasation (44% vs. endotoxin group).
Conclusions
C1-INH administration diminishes endotoxin-induced changes in the intestinal microcirculation during experimental endotoxemia.