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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2015 ; 6
(ä): 6931
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Macrophages monitor tissue osmolarity and induce inflammatory response through
NLRP3 and NLRC4 inflammasome activation
#MMPMID25959047
Ip WK
; Medzhitov R
Nat Commun
2015[May]; 6
(ä): 6931
PMID25959047
show ga
Interstitial osmolality is a key homeostatic variable that varies depending on
the tissue microenvironment. Mammalian cells have effective mechanisms to cope
with osmotic stress by engaging various adaptation responses. Hyperosmolality due
to high dietary salt intake has been linked to pathological inflammatory
conditions. Little is known about the mechanisms of sensing the hyperosmotic
stress by the innate immune system. Here we report that caspase-1 is activated in
macrophages under hypertonic conditions. Mice with high dietary salt intake
display enhanced induction of Th17 response upon immunization, and this effect is
abolished in caspase-1-deficient mice. Our findings identify an unknown function
of the inflammasome as a sensor of hyperosmotic stress, which is crucial for the
induction of inflammatory Th17 response.
|Animals
[MESH]
|Apoptosis Regulatory Proteins/*metabolism
[MESH]
|Calcium-Binding Proteins/*metabolism
[MESH]
|Carrier Proteins/*metabolism
[MESH]
|Caspase 1/metabolism
[MESH]
|Enzyme Activation
[MESH]
|Inflammasomes/*metabolism
[MESH]
|Inflammation/*metabolism/*pathology
[MESH]
|Interleukin-1beta/metabolism
[MESH]
|Macrophages/*metabolism
[MESH]
|Mice, Inbred C57BL
[MESH]
|Mitochondria/metabolism
[MESH]
|Mitophagy
[MESH]
|NLR Family, Pyrin Domain-Containing 3 Protein
[MESH]