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  • Title: NSAIDs Ibuprofen, Indometacin, and Diclofenac do not interact with Farnesoid X Receptor.
    Author: Schmidt J, Klingler FM, Proschak E, Steinhilber D, Schubert-Zsilavecz M, Merk D.
    Journal: Sci Rep; 2015 Oct 01; 5():14782. PubMed ID: 26424593.
    Abstract:
    The nuclear farnesoid X receptor (FXR) is a ligand activated transcription factor and acts as cellular sensor for bile acids. In this role, FXR is a highly important liver protector and FXR inhibition by antagonists or knockout has shown several deleterious effects. A recent report characterized non-steroidal anti-rheumatic drugs (NSAIDs) such as ibuprofen or diclofenac as FXR antagonists and linked hepatotoxic effects of these drugs with antagonistic activity on FXR. Since this would guide a way to develop safer anti-inflammatory agents by sparing FXR, we intended to further characterize the reported antagonistic activity and intensively investigated ibuprofen, indometacin and diclofenac. However, we conclude that these agents do not interact with FXR and that the reported reduced FXR signaling induced by CDCA in presence of NSAIDs is merely a consequence than a cause of hepatotoxicity.
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