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Farnesoid X receptor (FXR) is the nuclear receptor of bile acids and is involved in innate immune regulation. FXR agonists have been shown to protect multiple organs from inflammatory tissue injuries. Because liver expresses high levels of FXR, we explored the potential therapeutic benefits and underlying mechanisms of pharmacologic FXR activation in a murine model of partial liver warm ischemia. Pretreatment of mice with FXR agonist 3‐(2,6‐dichlorophenyl)‐4‐(3′‐carboxy‐2‐chlorostilben‐4‐yl)oxymethyl‐5‐isopropylisoxazole (GW4064) attenuated liver ischemia/reperfusion injuries (IRIs) in wild‐type but not FXR knockout mice. Posttreatment with GW4064 facilitated liver recovery from IRI. Mechanistically, Kupffer cells (KCs) expressed much higher levels of FXR than bone marrow‐derived macrophages (BMMs). Pretreatment of KCs but not BMMs with GW4064 resulted in lower tumor necrosis factor α but higher interleukin‐10 expressions following toll‐like receptor stimulation. FXR‐targeted gene small heterodimer partner ( SHP ) was critical for the regulation of KC response by GW4064.  In vivo , the depletion of KCs but not cluster of differentiation (CD) 11b +  cells or knockdown of  SHP  diminished the immune regulatory effect of GW4064 in liver IRI. Thus, FXR activation protects liver from IRI by up‐regulating  SHP  in KCs to inhibit the liver proinflammatory response.

Farnesoid X Receptor Activation Protects Liver From Ischemia/Reperfusion Injury by Up‐Regulating Small Heterodimer Partner in Kupffer Cells