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J Neuroimmunol. 2007 Sep;189(1-2):7-16. Epub 2007 Jul 24.

Hypothermia suppresses inflammation via ERK signaling pathway in stimulated microglial cells.

Author information

1
Department of Congenital Heart Disease / Pediatric Cardiology, Deutsches Herzzentrum Berlin, Augustenburger Platz 1, 13353 Berlin, Germany. katharina.schmitt@charite.de

Abstract

Hypothermic perfusion is a standard method for neuroprotection during cardiac surgery in children. However, the cellular responses underlying these mechanisms have not been clearly elucidated. In the present study we demonstrated that the inflammatory response of stimulated microglial cells is significantly reduced after moderate hypothermia. Continuous hypothermia caused a diminished NO release. Moderate hypothermia and rewarming caused a downregulation of phosphorylated MEK, ERK and iNOS-expression, diminished cytokine release and reduced CD-11a and ICAM-1 expression. Thus, neuroprotection offered by hypothermia could be attributed to reduced cytotoxic products released from stimulated microglial cells mediated by the MEK/ERK signal transduction pathway.

PMID:
17651818
DOI:
10.1016/j.jneuroim.2007.06.010
[Indexed for MEDLINE]

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