{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T17:40:24Z","timestamp":1781286024825,"version":"3.54.1"},"reference-count":37,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,6,12]],"date-time":"2020-06-12T00:00:00Z","timestamp":1591920000000},"content-version":"vor","delay-in-days":163,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003453","name":"Natural Science Foundation of Guangdong Province","doi-asserted-by":"publisher","award":["2018A030310272"],"award-info":[{"award-number":["2018A030310272"]}],"id":[{"id":"10.13039\/501100003453","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:p><jats:italic>Background<\/jats:italic>. Primary biliary cholangitis\u2010autoimmune hepatitis overlap syndrome (PBC\u2010AIH OS), which exhibits features between autoimmune hepatitis and cholestasis, is a common condition and usually shows a progressive course toward cirrhosis and liver failure without adequate treatment. Synthesis of bile acids (BAs) plays an important role in liver injury in cholestasis, and the process is regulated by fibroblast growth factor 19 (FGF19). The overall role of circulating FGF19 in BA synthesis and PBC\u2010AIH OS requires further investigation. <jats:italic>Methods<\/jats:italic>. We analyzed BA synthesis and correlated clinical parameters with serum BAs and FGF19 in 35 patients with PBC\u2010AIH OS. Serum concentrations of 7alpha\u2010hydroxycholest\u20104\u2010en\u20103\u2010one (C4) were used to quantify the synthesis of BA directly. <jats:italic>Results<\/jats:italic>. Serum FGF19 levels were higher, while C4 levels were substantially lower in PBC\u2010AIH OS patients than those in healthy controls. Circulating FGF19 levels strongly correlated with C4 (<jats:italic>r<\/jats:italic> = \u22120.695, <jats:italic>p<\/jats:italic> &lt; 0.0001), direct bilirubin (<jats:italic>r<\/jats:italic> = 0.598, <jats:italic>p<\/jats:italic> = 0.0001), and total bile acids (<jats:italic>r<\/jats:italic> = 0.595, <jats:italic>p<\/jats:italic> = 0.002). Moreover, circulating FGF19 levels strongly correlated with the model for end\u2010stage liver disease score (<jats:italic>r<\/jats:italic> = 0.574, <jats:italic>p<\/jats:italic> = 0.0005) and Mayo risk score (<jats:italic>r<\/jats:italic> = 0.578, <jats:italic>p<\/jats:italic> = 0.001). <jats:italic>Conclusions<\/jats:italic>. Serum FGF19 is significantly increased in patients with PBC\u2010AIH OS, while BA synthesis is suppressed. Circulating FGF19 primarily controls the regulation of BA synthesis in response to cholestasis and under cholestatic conditions. Therefore, modulation of circulating FGF19 could provide a promising targeted therapy for patients with PBC\u2010AIH OS.<\/jats:p>","DOI":"10.1155\/2020\/1934541","type":"journal-article","created":{"date-parts":[[2020,6,12]],"date-time":"2020-06-12T23:31:29Z","timestamp":1592004689000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Dysregulation of Circulating FGF19 and Bile Acids in Primary Biliary Cholangitis\u2010Autoimmune Hepatitis Overlap 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