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Nat Rev Immunol. 2019 Jan 15. doi: 10.1038/s41577-018-0113-4. [Epub ahead of print]

Sodium in the microenvironment regulates immune responses and tissue homeostasis.

Author information

1
Experimental and Clinical Research Center, a joint cooperation of Max Delbruck Center for Molecular Medicine and Charité-Universitätsmedizin Berlin, Berlin, Germany. Dominik.Mueller@mdc-berlin.de.
2
Max Delbruck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany. Dominik.Mueller@mdc-berlin.de.
3
Experimental and Clinical Research Center, a joint cooperation of Max Delbruck Center for Molecular Medicine and Charité-Universitätsmedizin Berlin, Berlin, Germany.
4
Division of Nephrology and Internal Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany.
5
Department of Neurology, University of Regensburg, Regensburg, Germany.
6
VIB Laboratory of Translational Immunomodulation, VIB Center for Inflammation Research (IRC) Hasselt University, Diepenbeek, Belgium.
7
Department of Neurology, University of Regensburg, Regensburg, Germany. ralf.linker@ukr.de.

Abstract

During tissue inflammation, immune cells infiltrate the interstitial space of target organs, where they sense and adapt to local environmental stimuli. Such stimuli include not only pathogens but also local factors such as the levels of oxygenation, nutrients and electrolytes. An important electrolyte in this regard is sodium (Na+). Recent in vivo findings have shown a role of Na+ storage in the skin for electrolyte homeostasis. Thereby, Na+ intake may influence the activation status of the immune system through direct effects on T helper cell subsets and innate immune cells in tissues such as the skin and other target organs. Furthermore, high Na+ intake has been shown to alter the composition of the intestinal microbiota, with indirect effects on immune cells. The results suggest regulatory roles for Na+ in cardiovascular disease, inflammation, infection and autoimmunity.

PMID:
30644452
DOI:
10.1038/s41577-018-0113-4

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