Volume 181, Issue 3 pp. 468-479
Translational

Insight into the beneficial immunomodulatory mechanism of the sevoflurane metabolite hexafluoro-2-propanol in a rat model of endotoxaemia

M. Urner

M. Urner

Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

M. Urner and M. Schläpfer contributed equally to this work as first authors.

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M. Schläpfer

M. Schläpfer

Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

M. Urner and M. Schläpfer contributed equally to this work as first authors.

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I. K. Herrmann

I. K. Herrmann

Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland

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M. Hasler

M. Hasler

Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland

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R. R. Schimmer

R. R. Schimmer

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

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C. Booy

C. Booy

Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

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B. Roth Z'graggen

B. Roth Z'graggen

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

Functional Genomics Center Zurich, University of Zurich, Zurich, Switzerland

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H. Rehrauer

H. Rehrauer

Functional Genomics Center Zurich, University of Zurich, Zurich, Switzerland

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F. Aigner

F. Aigner

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

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R. D. Minshall

R. D. Minshall

Department of Anesthesiology, University of Illinois Chicago, Chicago, IL, USA

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W. J. Stark

W. J. Stark

Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, Zurich, Switzerland

W. J. Stark and B. Beck-Schimmer contributed equally to this work as senior authors.

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B. Beck-Schimmer

Corresponding Author

B. Beck-Schimmer

Institute of Anesthesiology, University Hospital Zurich, Zurich, Switzerland

Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland

Department of Anesthesiology, University of Illinois Chicago, Chicago, IL, USA

W. J. Stark and B. Beck-Schimmer contributed equally to this work as senior authors.

Correspondence: B. Beck-Schimmer, University Hospital Zurich, Institute of Anesthesiology, Rämistrasse 100, CH-8091 Zurich, Switzerland. E-mail: [email protected]Search for more papers by this author
First published: 29 April 2015
Citations: 12

Summary

Volatile anaesthetics such as sevoflurane attenuate inflammatory processes, thereby impacting patient outcome significantly. Their inhalative administration is, however, strictly limited to controlled environments such as operating theatres, and thus an intravenously injectable immunomodulatory drug would offer distinct advantages. As protective effects of volatile anaesthetics have been associated with the presence of trifluorinated carbon groups in their basic structure, in this study we investigated the water-soluble sevoflurane metabolite hexafluoro-2-propanol (HFIP) as a potential immunomodulatory drug in a rat model of endotoxic shock. Male Wistar rats were subjected to intravenous lipopolysaccharide (LPS) and thereafter were treated with HFIP. Plasma and tissue inflammatory mediators, neutrophil invasion, tissue damage and haemodynamic stability were the dedicated end-points. In an endotoxin-induced endothelial cell injury model, underlying mechanisms were elucidated using gene expression and gene reporter analyses. HFIP reduced the systemic inflammatory response significantly and decreased endotoxin-induced tissue damage. Additionally, the LPS-provoked drop in blood pressure of animals was resolved by HFIP treatment. Pathway analysis revealed that the observed attenuation of the inflammatory process was associated with reduced nuclear factor kappa B (NF-κΒ) activation and suppression of its dependent transcripts. Taken together, intravenous administration of HFIP exerts promising immunomodulatory effects in endotoxaemic rats. The possibility of intravenous administration would overcome limitations of volatile anaesthetics, and thus HFIP might therefore represent an interesting future drug candidate for states of severe inflammation.

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