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Paneth cell‐derived interleukin‐17A causes multiorgan dysfunction after hepatic ischemia and reperfusion injury
Author(s) -
Park Sang Won,
Kim Mihwa,
Brown Kevin M.,
D'Agati Vivette D.,
Lee H. Thomas
Publication year - 2011
Publication title -
hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.488
H-Index - 361
eISSN - 1527-3350
pISSN - 0270-9139
DOI - 10.1002/hep.24253
Subject(s) - paneth cell , organ dysfunction , liver injury , medicine , acute kidney injury , hepatic stellate cell , kidney , multiple organ dysfunction syndrome , reperfusion injury , villin , endocrinology , pathology , biology , small intestine , ischemia , sepsis , actin , microbiology and biotechnology
Hepatic ischemia and reperfusion (IR) injury is a major clinical problem that leads to frequent extrahepatic complications including intestinal dysfunction and acute kidney injury (AKI). In this study we aimed to determine the mechanisms of hepatic IR‐induced extrahepatic organ dysfunction. Mice subjected to 60 minutes of hepatic IR not only developed severe hepatic injury but also developed significant AKI and small intestinal injury. Hepatic IR induced small intestinal Paneth cell degranulation and increased interleukin‐17A (IL‐17A) levels in portal vein plasma and small intestine. We also detected increased levels of IL‐17A messenger RNA (mRNA) and protein in Paneth cells after hepatic IR with laser capture dissection. IL‐17A‐neutralizing antibody treatment or genetic deletion of either IL‐17A or IL‐17A receptors significantly protected against hepatic IR‐induced acute liver, kidney, and intestinal injury. Leukocyte IL‐17A does not contribute to organ injury, as infusion of wildtype splenocytes failed to exacerbate liver and kidney injury in IL‐17A‐deficient mice after hepatic IR. Depletion of Paneth cell numbers by pharmacological (with dithizone) or genetic intervention (SOX9 flox/flox Villin cre+/− mice) significantly attenuated intestinal, hepatic, and renal injury following liver IR. Finally, depletion of Paneth cell numbers significantly decreased small intestinal IL‐17A release and plasma IL‐17A levels after liver IR. Conclusion: Taken together, the results show that Paneth cell‐derived IL‐17A plays a critical role in hepatic IR injury and extrahepatic organ dysfunction. Modulation of Paneth cell dysregulation may have therapeutic implications by reducing systemic complications arising from hepatic IR. (H EPATOLOGY 2011;)