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Nebulized antithrombin limits bacterial outgrowth and lung injury in Streptococcus pneumoniae pneumonia in rats
Authors:Jorrit J Hofstra  Alexander D Cornet  Bart F de Rooy  Alexander P Vlaar  Tom van der Poll  Marcel Levi  Sebastian AJ Zaat  Marcus J Schultz
Affiliation:1. Laboratory of Experimental Intensive Care and Anesthesiology (L·E·I·C·A), Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
2. Department of Intensive Care Medicine, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
3. Department of Anesthesiology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
4. Department of Intensive Care Medicine, Vrije Universiteit Medical Centre, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
5. Department of Medical Microbiology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
6. Department of Internal Medicine, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
7. Centre for Experimental and Molecular Medicine (CEMM), Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
8. Centre for Infection and Immunity Amsterdam (CINIMA), Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
Abstract:

Introduction  

Disturbed alveolar fibrin turnover is a cardinal feature of severe pneumonia. Clinical studies suggest that natural inhibitors of coagulation exert lung-protective effects via anticoagulant and possibly also anti-inflammatory pathways. Intravenous infusion of the natural anticoagulants increases the risk of bleeding. Local administration may allow for higher treatment dosages and increased local efficacy while at the same time reducing the risk of bleeding. We evaluated the effect of nebulized anticoagulants on pulmonary coagulopathy and inflammation in a rat model of Streptococcus pneumoniae pneumonia.
Keywords:
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