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Wang B, Han D, Hu X, Chen J, Liu Y, Wu J. Exploring the role of a novel postbiotic bile acid: Interplay with gut microbiota, modulation of the farnesoid X receptor, and prospects for clinical translation. Microbiol Res 2024; 287:127865. [PMID: 39121702 DOI: 10.1016/j.micres.2024.127865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 08/01/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024]
Abstract
The gut microbiota, mainly resides in the colon, possesses a remarkable ability to metabolize different substrates to create bioactive substances, including short-chain fatty acids, indole-3-propionic acid, and secondary bile acids. In the liver, bile acids are synthesized from cholesterol and then undergo modification by the gut microbiota. Beyond those reclaimed by the enterohepatic circulation, small percentage of bile acids escaped reabsorption, entering the systemic circulation to bind to several receptors, such as farnesoid X receptor (FXR), thereby exert their biological effects. Gut microbiota interplays with bile acids by affecting their synthesis and determining the production of secondary bile acids. Reciprocally, bile acids shape out the structure of gut microbiota. The interplay of bile acids and FXR is involved in the development of multisystemic conditions, encompassing metabolic diseases, hepatobiliary diseases, immune associated disorders. In the review, we aim to provide a thorough review of the intricate crosstalk between the gut microbiota and bile acids, the physiological roles of bile acids and FXR in mammals' health and disease, and the clinical translational considerations of gut microbiota-bile acids-FXR in the treatment of the diseases.
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Affiliation(s)
- Beibei Wang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Dong Han
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Xinyue Hu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Jing Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Yuwei Liu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Jing Wu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China.
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Simbrunner B, Hofer BS, Schwabl P, Zinober K, Petrenko O, Fuchs C, Semmler G, Marculescu R, Mandorfer M, Datz C, Trauner M, Reiberger T. FXR-FGF19 signaling in the gut-liver axis is dysregulated in patients with cirrhosis and correlates with impaired intestinal defence. Hepatol Int 2024; 18:929-942. [PMID: 38332428 PMCID: PMC11126514 DOI: 10.1007/s12072-023-10636-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 12/22/2023] [Indexed: 02/10/2024]
Abstract
BACKGROUND AND AIMS Experimental studies linked dysfunctional Farnesoid X receptor (FXR)-fibroblast growth factor 19 (FGF19) signaling to liver disease. This study investigated key intersections of the FXR-FGF19 pathway along the gut-liver axis and their link to disease severity in patients with cirrhosis. METHODS Patients with cirrhosis undergoing hepatic venous pressure gradient measurement (cohort-I n = 107, including n = 53 with concomitant liver biopsy; n = 5 healthy controls) or colonoscopy with ileum biopsy (cohort-II n = 37; n = 6 controls) were included. Hepatic and intestinal gene expression reflecting FXR activation and intestinal barrier integrity was assessed. Systemic bile acid (BA) and FGF19 levels were measured. RESULTS Systemic BA and FGF19 levels correlated significantly (r = 0.461; p < 0.001) and increased with cirrhosis severity. Hepatic SHP expression decreased in patients with cirrhosis (vs. controls; p < 0.001), indicating reduced FXR activation in the liver. Systemic FGF19 (r = -0.512, p < 0.001) and BA (r = -0.487, p < 0.001) levels correlated negatively with hepatic CYP7A1, but not SHP or CYP8B1 expression, suggesting impaired feedback signaling in the liver. In the ileum, expression of FXR, SHP and FGF19 decreased in patients with cirrhosis, and interestingly, intestinal FGF19 expression was not linked to systemic FGF19 levels. Intestinal zonula occludens-1, occludin, and alpha-5-defensin expression in the ileum correlated with SHP and decreased in patients with decompensated cirrhosis as compared to controls. CONCLUSIONS FXR-FGF19 signaling is dysregulated at essential molecular intersections along the gut-liver axis in patients with cirrhosis. Decreased FXR activation in the ileum mucosa was linked to reduced expression of intestinal barrier proteins. These human data call for further mechanistic research on interventions targeting the FXR-FGF19 pathway in patients with cirrhosis. CLINICAL TRIAL NUMBER NCT03267615.
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Affiliation(s)
- Benedikt Simbrunner
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna, Austria
| | - Benedikt S Hofer
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna, Austria
| | - Philipp Schwabl
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna, Austria
| | - Kerstin Zinober
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria
| | - Oleksandr Petrenko
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna, Austria
| | - Claudia Fuchs
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Georg Semmler
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Rodrig Marculescu
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Mattias Mandorfer
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Christian Datz
- Department of Internal Medicine, General Hospital Oberndorf, Teaching Hospital, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria.
- Vienna Hepatic Hemodynamic Laboratory, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria.
- Christian Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria.
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna, Austria.
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Hofer BS, Burghart L, Halilbasic E, Simbrunner B, Petrenko O, Mandorfer M, Stättermayer AF, Trauner M, Reiberger T. Evaluation of potential hepatic recompensation criteria in patients with PBC and decompensated cirrhosis. Aliment Pharmacol Ther 2024; 59:962-972. [PMID: 38409879 DOI: 10.1111/apt.17908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 11/25/2023] [Accepted: 02/06/2024] [Indexed: 02/28/2024]
Abstract
BACKGROUND Aetiological therapy improves liver function and may enable hepatic recompensation in decompensated cirrhosis. AIMS We explored the potential for recompensation in patients with decompensated primary biliary cholangitis (PBC) - considering a biochemical response to ursodeoxycholic acid (UDCA) according to Paris-II criteria as a surrogate for successful aetiological treatment. METHODS Patients with PBC were retrospectively included at the time of first decompensation. Recompensation was defined as (i) resolution of ascites and hepatic encephalopathy (HE) despite discontinuation of diuretic/HE therapy, (ii) absence of variceal bleeding and (iii) sustained liver function improvement. RESULTS In total, 42 patients with PBC with decompensated cirrhosis (age: 63.5 [IQR: 51.9-69.2] years; 88.1% female; MELD-Na: 13.5 [IQR: 11.0-15.0]) were included and followed for 41.9 (IQR: 11.0-70.9) months after decompensation. Seven patients (16.7%) achieved recompensation. Lower MELD-Na (subdistribution hazard ratio [SHR]: 0.90; p = 0.047), bilirubin (SHR per mg/dL: 0.44; p = 0.005) and alkaline phosphatase (SHR per 10 U/L: 0.67; p = 0.001) at decompensation, as well as variceal bleeding as decompensating event (SHR: 4.37; p = 0.069), were linked to a higher probability of recompensation. Overall, 33 patients were treated with UDCA for ≥1 year and 12 (36%) achieved Paris-II response criteria. Recompensation occurred in 5/12 (41.7%) and in 2/21 (9.5%) patients with vs. without UDCA response at 1 year, respectively. Recompensation was linked to a numerically improved transplant-free survival (HR: 0.46; p = 0.335). Nonetheless, 4/7 recompensated patients presented with liver-related complications after developing hepatic malignancy and/or portal vein thrombosis and 2 eventually died. CONCLUSIONS Patients with PBC and decompensated cirrhosis may achieve hepatic recompensation under UDCA therapy. However, since liver-related complications still occur after recompensation, patients should remain under close follow-up.
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Affiliation(s)
- Benedikt Silvester Hofer
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Lab, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Lukas Burghart
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
- Klinik Ottakring, Wiener Gesundheitsverbund, Vienna, Austria
| | - Emina Halilbasic
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Benedikt Simbrunner
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Lab, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Oleksandr Petrenko
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Mattias Mandorfer
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Lab, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Albert Friedrich Stättermayer
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Lab, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna Hepatic Hemodynamic Lab, Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Diseases (RALID) Center of the ERN RARE-LIVER at the Vienna General Hospital, Vienna, Austria
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Jones DEJ, Beuers U, Bonder A, Carbone M, Culver E, Dyson J, Gish RG, Hansen BE, Hirschfield G, Jones R, Kowdley K, Kremer AE, Lindor K, Mayo M, Mells G, Neuberger J, Prince M, Swain M, Tanaka A, Thorburn D, Trauner M, Trivedi P, Weltman M, Yeoman A, Levy C. Primary biliary cholangitis drug evaluation and regulatory approval: Where do we go from here? Hepatology 2024:01515467-990000000-00814. [PMID: 38506926 DOI: 10.1097/hep.0000000000000864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 02/20/2024] [Indexed: 03/22/2024]
Abstract
Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease. The management landscape was transformed 20 years ago with the advent of ursodeoxycholic acid. Up to 40% of patients do not, however, respond adequately to ursodeoxycholic acid and therefore still remain at risk of disease progression to cirrhosis. The introduction of obeticholic acid as a second-line therapy for patients failing ursodeoxycholic acid has improved outcomes for patients with PBC. There remains, however, a need for better treatment for patients at higher risk. The greatest threat facing our efforts to improve treatment in PBC is, paradoxically, the regulatory approval model providing conditional marketing authorization for new drugs based on biochemical markers on the condition that long-term, randomized placebo-controlled outcome trials are performed to confirm efficacy. As demonstrated by the COBALT confirmatory study with obeticholic acid, it is difficult to retain patients in the required follow-on confirmatory placebo-controlled PBC outcome trials when a licensed drug is commercially available. New PBC therapies in development, such as the peroxisome proliferator-activated receptor agonists, face even greater challenges in demonstrating outcome benefit through randomized placebo-controlled studies once following conditional marketing authorization, as there will be even more treatment options available. A recently published EMA Reflection Paper provides some guidance on the regulatory pathway to full approval but fails to recognize the importance of real-world data in providing evidence of outcome benefit in rare diseases. Here we explore the impact of the EMA reflection paper on PBC therapy and offer pragmatic solutions for generating evidence of long-term outcomes through real-world data collection.
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Affiliation(s)
- David E J Jones
- Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Ulrich Beuers
- Department of Gastroenterology and Hepatology, Academisch Medisch Centrum Universiteit van Amsterdam, Amsterdam, The Netherlands
| | - Alan Bonder
- Division of Gastroenterology, Beth Israel Deaconess Medical Centre, Boston, Massachusetts, USA
| | - Marco Carbone
- Liver Unit, ASST Grande Ospedale, Metropolitano Niguarda, Milan, Italy
| | - Emma Culver
- John Radcliffe Hospital, Oxford, UK
- University of Oxford, Oxford, UK
| | - Jessica Dyson
- Liver Unit, Freeman Hospital, Newcastle upon Tyne, UK
| | - Robert G Gish
- Hepatitis B Foundation, San Diego, California, USA
- Division of Gastroenterology and Hepatology, Stanford Medicine, Stanford, California, USA
| | - Bettina E Hansen
- Department of Epidemiology & Biostatistics, Erasmus MC, Rotterdam, The Netherlands
- University of Toronto, Toronto, Ontario, Canada
- Toronto Center for Liver Disease & Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Gideon Hirschfield
- Toronto Centre for Liver Disease, Toronto General Hospital, Toronto, Ontario, Canada
| | - Rebecca Jones
- Leeds Liver Unit, St James's University Hospital, Leeds, UK
| | - Kris Kowdley
- Liver Institute Northwest, Elson S. Floyd College of Medicine, Washington State University, Pullman, Washington, USA
- Velocity Clinical Research, Seattle, Washington, USA
| | - Andreas E Kremer
- Department of Gastroenterology and Hepatology, University Hospital Zürich, Zürich, Switzerland
| | - Keith Lindor
- College of Health Solutions, Arizona State University, Tempe, Arizona, USA
| | - Marlyn Mayo
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - George Mells
- The Cambridge Liver Unit, Addenbrooke's Hospital, Cambridge, UK
| | - James Neuberger
- Liver and Hepato-Pancreato-Biliary Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Martin Prince
- Department of Gastroenterology (Manchester Royal Infirmary), Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Mark Swain
- University of Calgary, Calgary, Alberta, Canada
| | - Atsushi Tanaka
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | | | - Michael Trauner
- Department of Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Palak Trivedi
- National Institute for Health and Care Research, Birmingham Biomedical Research Centre, Birmingham, UK
- Liver Unit, University Hospitals Birmingham, Birmingham, UK
| | - Martin Weltman
- Gastroenterology and Hepatology, Nepean Hospital, Kingswood, New South Wales, Australia
| | - Andrew Yeoman
- Aneurin Bevan University Health Board, Gwent Liver Unit, Newport, Wales, UK
| | - Cynthia Levy
- Division of Digestive Health and Liver Diseases and Schiff Center for Liver Diseases, Miami, Florida, USA
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Ampuero J, Lucena A, Berenguer M, Hernández-Guerra M, Molina E, Gómez-Camarero J, Valdivia C, Gómez E, Casado M, Álvarez-Navascuez C, Jorquera F, García-Buey L, Díaz-González Á, Morillas R, García-Retortillo M, Sousa JM, Pérez-Medrano I, Simón MÁ, Martínez J, Arenas J, Londoño MC, Olveira A, Fernández-Rodríguez C. Predictive factors for decompensating events in patients with cirrhosis with primary biliary cholangitis under different lines of therapy. Hepatology 2024:01515467-990000000-00788. [PMID: 38447019 DOI: 10.1097/hep.0000000000000826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/14/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND AND AIMS The landscape in primary biliary cholangitis (PBC) has changed with the advent of second-line treatments. However, the use of obeticholic acid (OCA) and fibrates in PBC-related cirrhosis is challenging. We assessed the impact of receiving a second-line therapy as a risk factor for decompensated cirrhosis in a real-world population with cirrhosis and PBC, and identify the predictive factors for decompensated cirrhosis in these patients. APPROACH AND RESULTS Multicenter study enrolling 388 patients with PBC-cirrhosis from the Spanish ColHai registry. Biopsy (20%), ultrasound (59%), or transient elastography (21%) defined cirrhosis, and the presence of varices and splenomegaly defined clinically significant portal hypertension (CSPH). Paris-II and PBC OCA international study of efficacy criteria determined the response to ursodeoxycholic acid (UDCA), fibrates (n=93), and OCA (n=104). The incidence of decompensated cirrhosis decreased for UDCA versus OCA or fibrates in the real-world population, but they were similar considering the propensity score-matched cohort (UDCA 3.77 vs. second-line therapy 4.5 100 persons-year, respectively), as patients on second-line therapy exhibited advanced liver disease. Consequently, GGT, albumin, platelets, clinically significant portal hypertension, and UDCA response were associated with a decompensating event. OCA response (achieved in 52% of patients) was associated with bilirubin (OR 0.21 [95% CI: 0.06-0.73]) and AST (OR 0.97 [95% CI: 0.95-0.99]), while fibrate response (achieved in 55% of patients) with AST [OR 0.96 (95% CI: 0.95-0.98]). In patients treated with OCA, drug response (sHR 0.23 [95% CI: 0.08-0.64]), diabetes (sHR 5.62 [95% CI: 2.02-15.68]), albumin (sHR 0.34 [95% CI: 0.13-0.89]), and platelets (sHR 0.99 [95% CI: 0.98-1.00]) were related to decompensation. In patients treated with fibrate, drug response (sHR 0.36 (95% CI: 0.14-0.95]), albumin (sHR 0.36 (95% CI: 0.16-0.81]), and clinically significant portal hypertension (sHR 3.70 (95% CI: 1.17-11.70]) were associated with decompensated cirrhosis. CONCLUSIONS Advanced PBC, rather than OCA and fibrates, was found to be associated with decompensating events. Therefore, biochemical and clinical variables should be considered when making decisions about the management of these drugs. Moreover, a positive response to OCA and fibrates reduced the risk of decompensation.
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Affiliation(s)
- Javier Ampuero
- Hospital Universitario Virgen del Rocío, Sevilla, Spain
- Instituto de Biomedicina de Sevilla, Spain
- Universidad de Sevilla, Spain
- CIBERehd, Spain
| | - Ana Lucena
- Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | - Marina Berenguer
- CIBERehd, Spain
- Hepatology and Liver Transplantation Unit, IISLaFe, La Fe University Hospital, Valencia, Spain
- University of Valencia, Dept of Medicine, Valencia, Spain
| | | | | | | | - Carlos Valdivia
- CIBERehd, Spain
- Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Elena Gómez
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Marta Casado
- Unidad de Aparato Digestivo, Hospital Universitario Torrecardenas, Almería, Spain
| | | | - Francisco Jorquera
- CIBERehd, Spain
- Servicio de Aparato Digestivo, Complejo Asistencial Universitario de León, León, Castilla y León, Spain
| | - Luisa García-Buey
- Gastroenterology Department, Hospital Universitario La Princesa, IIS-IP, Universidad Autónoma de Madrid, Spain
| | - Álvaro Díaz-González
- Servicio de Gastroenterología y Hepatología. Grupo de Investigación Clínica y Traslacional en Enfermedades Digestivas, Instituto de Investigación Valdecilla (IDIVAL), Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Rosa Morillas
- CIBERehd, Spain
- Liver Section, Hospital Universitari Germans Trias i Pujol, IGTP, Badalona, Spain
- Universitat Autònoma de Barcelona, Spain
| | | | - Jose M Sousa
- Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | - Indhira Pérez-Medrano
- Complexo Hospitalario Universitario de Pontevedra. Instituto de Investigación Sanitaria Galicia Sur (IISGS)
| | - Miguel Á Simón
- CIBERehd, Spain
- Servicio de Aparato Digestivo, Hospital Clínico Universitario, Zaragoza, Spain
- Instituto de Investigacion Sanitaria de Aragon (IIS Aragón), Universidad de Zaragoza, Spain
| | - Javier Martínez
- CIBERehd, Spain
- Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Juan Arenas
- Hospital Universitario Donostia, San Sebastián, Spain
| | - María Carlota Londoño
- CIBERehd, Spain
- Liver Unit, Hospital Clínic Barcelona, Fundació de Recerca Clínic Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer, European Reference Network on Hepatological Diseases (ERN RARE-LIVER), University of Barcelona, Barcelona, Spain
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Narayanan AK, Surendran S, Balakrishnan D, Gopalakrishnan U, Malick S, Valsan A, Philips CA, Watson CJE. A Short Review on Obeticholic Acid: An Effective Modulator of Farnesoid X Receptor. Curr Rev Clin Exp Pharmacol 2024; 19:225-233. [PMID: 38708917 DOI: 10.2174/0127724328239536230919070001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 07/10/2023] [Accepted: 08/04/2023] [Indexed: 05/07/2024]
Abstract
Farnesoid X receptor (FXR) was identified as an orphan nuclear receptor resembling the steroid receptor in the late '90s. Activation of FXR is a crucial step in many physiological functions of the liver. A vital role of FXR is impacting the amount of bile acids in the hepatocytes, which it performs by reducing bile acid synthesis, stimulating the bile salt export pump, and inhibiting its enterohepatic circulation, thus protecting the hepatocytes against the toxic accumulation of bile acids. Furthermore, FXR mediates bile acid biotransformation in the intestine, liver regeneration, glucose hemostasis, and lipid metabolism. In this review, we first discuss the mechanisms of the disparate pleiotropic actions of FXR agonists. We then delve into the pharmacokinetics of Obeticholic acid (OCA), the first-in-class selective, potent FXR agonist. We additionally discuss the clinical journey of OCA in humans, its current evidence in various human diseases, and its plausible roles in the future.
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Affiliation(s)
- Anila Kutty Narayanan
- Department of Gastrointestinal Surgery & Solid Organ Transplant, Amrita Institute of Medical Sciences & Research Centre, Amrita University, Kochi 682041, Kerala, India
| | - Sudhindran Surendran
- Department of Gastrointestinal Surgery & Solid Organ Transplant, Amrita Institute of Medical Sciences & Research Centre, Amrita University, Kochi 682041, Kerala, India
| | - Dinesh Balakrishnan
- Department of Gastrointestinal Surgery & Solid Organ Transplant, Amrita Institute of Medical Sciences & Research Centre, Amrita University, Kochi 682041, Kerala, India
| | - Unnikrishnan Gopalakrishnan
- Department of Gastrointestinal Surgery & Solid Organ Transplant, Amrita Institute of Medical Sciences & Research Centre, Amrita University, Kochi 682041, Kerala, India
| | - Shweta Malick
- Department of Gastrointestinal Surgery & Solid Organ Transplant, Amrita Institute of Medical Sciences & Research Centre, Amrita University, Kochi 682041, Kerala, India
| | - Arun Valsan
- Department of Gastroenterology & Hepatology, Amrita Institute of Medical Sciences & Research Centre, Amrita University, Kochi 682041, Kerala, India
| | - Cyriac Abby Philips
- Department of Clinical and Translational Hepatology, The Liver Institute, Rajagiri Hospital, Aluva, Kerala, India
| | - Christopher John Edward Watson
- University of Cambridge and Honorary Consultant Surgeon, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge CB2 OQQ, UK
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7
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Palmer M, Kleiner DE, Goodman Z, Brunt E, Avigan MI, Regev A, Hayashi PH, Lewis JH, Mehta R, Harrison SA, Siciliano M, McWherter CA, Vuppalanchi R, Behling C, Miller V, Chalasani N, Sanyal AJ. Liver biopsy for assessment of suspected drug-induced liver injury in metabolic dysfunction-associated steatohepatitis clinical trials: Expert consensus from the Liver Forum. Aliment Pharmacol Ther 2024; 59:201-216. [PMID: 37877759 DOI: 10.1111/apt.17762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 05/25/2023] [Accepted: 10/03/2023] [Indexed: 10/26/2023]
Abstract
BACKGROUND Causality assessment of suspected drug-induced liver injury (DILI) during metabolic dysfunction-associated steatohepatitis (MASH) clinical trials can be challenging, and liver biopsies are not routinely performed as part of this evaluation. While the field is moving away from liver biopsy as a diagnostic and prognostic tool, information not identified by non-invasive testing may be provided on histology. AIM To address the appropriate utilisation of liver biopsy as part of DILI causality assessment in this setting. METHODS From 2020 to 2022, the Liver Forum convened a series of webinars on issues pertaining to liver biopsy during MASH trials. The Histology Working Group was formed to generate a series of consensus documents addressing these challenges. This manuscript focuses on liver biopsy as part of DILI causality assessment. RESULTS Expert opinion, guidance and recommendations on the role of liver biopsy as part of causality assessment of suspected DILI occurring during clinical trials for a drug(s) being developed for MASH are provided. Lessons learned from prior MASH programs are reviewed and gaps identified. CONCLUSIONS Although there are no pathognomonic features, histologic evaluation of suspected DILI during MASH clinical trials may alter patient management, define the pattern and severity of injury, detect findings that favour a diagnosis of DILI versus MASH progression, identify prognostic features, characterise the clinicopathological phenotype of DILI, and/or define lesions that influence decisions about trial discontinuation and further development of the drug.
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Affiliation(s)
| | - David E Kleiner
- Laboratory of Pathology, National Cancer Institute, Bethesda, Maryland, USA
| | - Zachary Goodman
- Center for Liver Diseases, Inova Fairfax Hospital, Falls Church, Virginia, USA
| | - Elizabeth Brunt
- Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri, USA
| | - Mark I Avigan
- Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | | | - Paul H Hayashi
- Division of Hepatology and Nutrition, Food and Drug Administration, Silver Spring, Maryland, USA
| | - James H Lewis
- Division of Gastroenterology, Georgetown University Hospital, Washington, District of Columbia, USA
| | - Ruby Mehta
- Center for Drug Evaluation and Research Office of New Drugs, Office of Inflammation and Immunity, Division of Hepatology and Nutrition, US Food and Drug Administration, Silver Spring, Maryland, USA
| | | | - Massimo Siciliano
- Fatebenefratelli Gemelli Isola - Rome, Sacred Heart Catholic Univesity, Rome, Italy
| | - Charles A McWherter
- Research and Development, CymaBay Therapeutics, Inc., Newark, California, USA
| | - Raj Vuppalanchi
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | | | - Veronica Miller
- University of California Berkeley, School of Public Health, Forum for Collaborative Research, Washington, District of Columbia, USA
| | - Naga Chalasani
- Indiana University School of Medicine, Indiana University Health, Indianapolis, Indiana, USA
| | - Arun J Sanyal
- Stravitz-Sanyal Institute for Liver Disease and Metabolic Health, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
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8
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Tanaka A. New Therapies on the Horizon for Primary Biliary Cholangitis. Drugs 2024; 84:1-15. [PMID: 38082142 DOI: 10.1007/s40265-023-01979-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2023] [Indexed: 01/17/2024]
Abstract
Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease that can progress to cirrhosis and hepatic failure if left untreated. Ursodeoxycholic acid (UDCA) was introduced as a first-line drug for PBC around 1990; it remarkably improved patient outcomes, leading to the nomenclature change of PBC in 2015, from primary biliary "cirrhosis" to primary biliary "cholangitis." Nevertheless, 20-30% of patients exhibit an incomplete response to UDCA, resulting in significantly worse outcomes compared to those with a complete response. Therefore, improving the long-term outcomes of patients with an incomplete response to UDCA has been recognized as an unmet need. In addition, patients with PBC often suffer from a variety of debilitating symptoms, such as pruritus, fatigue and sicca syndrome, which significantly impair their health-related quality of life. Thus, appropriate management of these symptoms is currently regarded as another unmet need for PBC treatment. In this review, several compounds and drugs under clinical trials that can potentially solve these unmet needs are comprehensively discussed, and future directions of treatment policy of PBC are proposed for significantly improving long-term outcome as well as health-related quality of life of patients.
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Affiliation(s)
- Atsushi Tanaka
- Department of Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.
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9
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Machado MV. MASLD treatment-a shift in the paradigm is imminent. Front Med (Lausanne) 2023; 10:1316284. [PMID: 38146424 PMCID: PMC10749497 DOI: 10.3389/fmed.2023.1316284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 11/24/2023] [Indexed: 12/27/2023] Open
Abstract
MASLD prevalence is growing towards the leading cause of end-stage liver disease. Up to today, the most effective treatment is weight loss. Weight loss interventions are moving from lifestyle changes to bariatric surgery or endoscopy, and, more recently, to a new wave of anti-obesity drugs that can compete with bariatric surgery. Liver-targeted therapy is a necessity for those patients who already present liver fibrosis. The field is moving fast, and in the near future, we will testify to a disruptive change in MASLD treatment, similar to the paradigm-shift that occurred for hepatitis C almost one decade ago with direct antiviral agents.
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Affiliation(s)
- Mariana Verdelho Machado
- Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Hospital de Vila Franca de Xira, Vila Franca de Xira, Portugal
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10
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Fuchs CD, Sroda N, Scharnagl H, Gupta R, Minto W, Stojakovic T, Liles JT, Budas G, Hollenback D, Trauner M. Non-steroidal FXR agonist cilofexor improves cholestatic liver injury in the Mdr2-/- mouse model of sclerosing cholangitis. JHEP Rep 2023; 5:100874. [PMID: 37841639 PMCID: PMC10568427 DOI: 10.1016/j.jhepr.2023.100874] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/30/2023] [Accepted: 07/18/2023] [Indexed: 10/17/2023] Open
Abstract
Background & Aims The nuclear receptor farnesoid X receptor (FXR) is a key regulator of hepatic bile acid (BA) and lipid metabolism, inflammation and fibrosis. Here, we aimed to explore the potential of cilofexor (GS-9674), a non-steroidal FXR agonist, as a therapeutic approach for counteracting features of cholestatic liver injury by evaluating its efficacy and mechanisms in the Mdr2/Abcb4 knockout (-/-) mouse model of sclerosing cholangitis. Methods FVB/N wild-type and Mdr2-/- or BALB/c wild-type and Mdr2-/- mice were treated with 0, 10, 30 or 90 mg/kg cilofexor by gavage every 24 h for 10 weeks. Serum biochemistry, gene expression profile, hydroxyproline content, and picrosirius red and F4/80 immunostaining, were investigated. Bile flow, biliary bicarbonate and BA output, and hepatic BA profile, were assessed. Results Cilofexor treatment improved serum levels of aspartate aminotransferase, alkaline phosphatase as well as BAs in Mdr2-/- animals. Hepatic fibrosis was improved, as reflected by the reduced picrosirius red-positive area and hydroxyproline content in liver sections of cilofexor-treated Mdr2-/- mice. Intrahepatic BA concentrations were lowered in cilofexor-treated Mdr2-/- mice, while hepatobiliary bile flow and bicarbonate output were increased. Conclusion Collectively the current data show that cilofexor treatment improves cholestatic liver injury and decreases hepatic fibrosis in the Mdr2-/- mouse model of sclerosing cholangitis. Impact and implications Treatment with cilofexor, a non-steroidal farnesoid X receptor (FXR) agonist, improved histological features of sclerosing cholangitis, cholestasis and hepatic fibrosis in the Mdr2-/- mouse model. These findings indicate, that pharmacological stimulation of intestinal FXR-mediated gut-liver signaling, via fibroblast growth factor 15 (thereby reducing bile acid synthesis), may be sufficient to attenuate cholestatic liver injury in the Mdr2-/- mouse model of sclerosing cholangitis, thus arguing for potential therapeutic properties of cilofexor in cholestatic liver diseases.
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Affiliation(s)
- Claudia D. Fuchs
- Hans Popper Laboratory of Molecular Hepatology, Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Austria
| | | | - Hubert Scharnagl
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | | | | | - Tatjana Stojakovic
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, University Hospital Graz, Austria
| | | | | | | | - Michael Trauner
- Hans Popper Laboratory of Molecular Hepatology, Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Austria
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11
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Fiorucci S, Sepe V, Biagioli M, Fiorillo B, Rapacciuolo P, Distrutti E, Zampella A. Development of bile acid activated receptors hybrid molecules for the treatment of inflammatory and metabolic disorders. Biochem Pharmacol 2023; 216:115776. [PMID: 37659739 DOI: 10.1016/j.bcp.2023.115776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
The farnesoid-x-receptor (FXR) and the G protein bile acid activated receptor (GPBAR)1 are two bile acid activated receptors highly expressed in entero-hepatic, immune, adipose and cardiovascular tissues. FXR and GPBAR1 are clinically validated targets in the treatment of metabolic disorders and FXR agonists are currently trialled in patients with non-alcoholic steato-hepatitis (NASH). Results of these trials, however, have raised concerns over safety and efficacy of selective FXR ligands suggesting that the development of novel agent designed to impact on multiple targets might have utility in the treatment of complex, multigenic, disorders. Harnessing on FXR and GPBAR1 agonists, several novel hybrid molecules have been developed, including dual FXR and GPBAR1 agonists and antagonists, while exploiting the flexibility of FXR agonists toward other nuclear receptors, dual FXR and peroxisome proliferators-activated receptors (PPARs) and liver-X-receptors (LXRs) and Pregnane-X-receptor (PXR) agonists have been reported. In addition, modifications of FXR agonists has led to the discovery of dual FXR agonists and fatty acid binding protein (FABP)1 and Leukotriene B4 hydrolase (LTB4H) inhibitors. The GPBAR1 binding site has also proven flexible to accommodate hybrid molecules functioning as GPBAR1 agonist and cysteinyl leukotriene receptor (CYSLTR)1 antagonists, as well as dual GPBAR1 agonists and retinoid-related orphan receptor (ROR)γt antagonists, dual GPBAR1 agonist and LXR antagonists and dual GPBAR1 agonists endowed with inhibitory activity on dipeptidyl peptidase 4 (DPP4). In this review we have revised the current landscape of FXR and GPBAR1 based hybrid agents focusing on their utility in the treatment of metabolic associated liver disorders.
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Affiliation(s)
- Stefano Fiorucci
- Dipartimento di Medicina e Chirurgia, Università di Perugia, Perugia, Italy.
| | - Valentina Sepe
- Dipartimento di Medicina e Chirurgia, Università di Perugia, Perugia, Italy
| | - Michele Biagioli
- Dipartimento di Medicina e Chirurgia, Università di Perugia, Perugia, Italy
| | - Bianca Fiorillo
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Pasquale Rapacciuolo
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, Naples I-80131, Italy
| | | | - Angela Zampella
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, Naples I-80131, Italy
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12
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You H, Duan W, Li S, Lv T, Chen S, Lu L, Ma X, Han Y, Nan Y, Xu X, Duan Z, Wei L, Jia J, Zhuang H. Guidelines on the Diagnosis and Management of Primary Biliary Cholangitis (2021). J Clin Transl Hepatol 2023; 11:736-746. [PMID: 36969891 PMCID: PMC10037524 DOI: 10.14218/jcth.2022.00347] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 11/02/2022] [Accepted: 11/20/2022] [Indexed: 03/29/2023] Open
Abstract
In 2015, the Chinese Society of Hepatology and the Chinese Society of Gastroenterology published a consensus on primary biliary cholangitis (PBC). In the past years, numerous clinical studies have been published in the field of PBC. To guide the clinical diagnosis and management of PBC patients, the Chinese Society of Hepatology invited a panel of experts to assess the new clinical evidence and formulate the current guidelines.
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Affiliation(s)
- Hong You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Weijia Duan
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Shuxiang Li
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Tingting Lv
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Sha Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Lungen Lu
- Department of Gastroenterology, First People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiong Ma
- Department of Gastroenterology and Hepatology, Renji Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Han
- Department of Gastroenterology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yuemin Nan
- Department of Traditional and Western Medical Hepatology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaoyuan Xu
- Department of Infectious Diseases and Center for Liver Diseases, Peking University First Hospital, Beijing, China
- Correspondence to: Jidong Jia, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, 95 Yong-an Road, Beijing 100050, China. ORCID: https://orcid.org/0000-0002-4673-8890. Tel: +86-10-63139816, Fax: +86-10-63139246, E-mail: ; Xiaoyuan Xu, Department of Infectious Diseases, Peking University First Hospital, Beijing 100034, China. ORCID: https://orcid.org/0000-0002-1759-4330. Tel/Fax: +86-10-83575787, E-mail:
| | - Zhongping Duan
- Artificial Liver Center, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Lai Wei
- Hepatobiliary Pancreatic Center, Tsinghua Changgung Hospital, Tsinghua University, Beijing, China
| | - Jidong Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing, China
- Correspondence to: Jidong Jia, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, 95 Yong-an Road, Beijing 100050, China. ORCID: https://orcid.org/0000-0002-4673-8890. Tel: +86-10-63139816, Fax: +86-10-63139246, E-mail: ; Xiaoyuan Xu, Department of Infectious Diseases, Peking University First Hospital, Beijing 100034, China. ORCID: https://orcid.org/0000-0002-1759-4330. Tel/Fax: +86-10-83575787, E-mail:
| | - Hui Zhuang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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13
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Trivella J, John BV, Levy C. Primary biliary cholangitis: Epidemiology, prognosis, and treatment. Hepatol Commun 2023; 7:02009842-202306010-00027. [PMID: 37267215 DOI: 10.1097/hc9.0000000000000179] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/10/2023] [Indexed: 06/04/2023] Open
Abstract
Primary biliary cholangitis (PBC) is a chronic cholestatic autoimmune liver disease characterized by a destructive, small duct, and lymphocytic cholangitis, and marked by the presence of antimitochondrial antibodies. The incidence and prevalence of PBC vary widely in different regions and time periods, and although disproportionally more common among White non-Hispanic females, contemporary data show a higher prevalence in males and racial minorities than previously described. Outcomes largely depend on early recognition of the disease and prompt institution of treatment, which, in turn, are directly influenced by provider bias and socioeconomic factors. Ursodeoxycholic acid remains the initial treatment of choice for PBC, with obeticholic acid and fibrates (off-label therapy) reserved as add-on therapy for the management of inadequate responders or those with ursodeoxycholic acid intolerance. Novel and repurposed drugs are currently at different stages of clinical development not only for the treatment of PBC but also for its symptomatic management. Here, we summarize the most up-to-date data regarding the epidemiology, prognosis, and treatment of PBC, providing clinically useful information for its holistic management.
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Affiliation(s)
- Juan Trivella
- Department of Medicine, Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Binu V John
- Department of Medicine, Division of Gastroenterology and Hepatology, Miami VA Medical System, Miami, Florida, USA
- Department of Medicine, Division of Digestive Health and Liver Diseases, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Cynthia Levy
- Department of Medicine, Division of Digestive Health and Liver Diseases, University of Miami Miller School of Medicine, Miami, Florida, USA
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14
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Pabst O, Hornef MW, Schaap FG, Cerovic V, Clavel T, Bruns T. Gut-liver axis: barriers and functional circuits. Nat Rev Gastroenterol Hepatol 2023:10.1038/s41575-023-00771-6. [PMID: 37085614 DOI: 10.1038/s41575-023-00771-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/23/2023] [Indexed: 04/23/2023]
Abstract
The gut and the liver are characterized by mutual interactions between both organs, the microbiome, diet and other environmental factors. The sum of these interactions is conceptualized as the gut-liver axis. In this Review we discuss the gut-liver axis, concentrating on the barriers formed by the enterohepatic tissues to restrict gut-derived microorganisms, microbial stimuli and dietary constituents. In addition, we discuss the establishment of barriers in the gut and liver during development and their cooperative function in the adult host. We detail the interplay between microbial and dietary metabolites, the intestinal epithelium, vascular endothelium, the immune system and the various host soluble factors, and how this interplay establishes a homeostatic balance in the healthy gut and liver. Finally, we highlight how this balance is disrupted in diseases of the gut and liver, outline the existing therapeutics and describe the cutting-edge discoveries that could lead to the development of novel treatment approaches.
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Affiliation(s)
- Oliver Pabst
- Institute of Molecular Medicine, RWTH Aachen University, Aachen, Germany.
| | - Mathias W Hornef
- Institute of Medical Microbiology, RWTH Aachen University, Aachen, Germany
| | - Frank G Schaap
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University, Aachen, Germany
- Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, Netherlands
| | - Vuk Cerovic
- Institute of Molecular Medicine, RWTH Aachen University, Aachen, Germany
| | - Thomas Clavel
- Functional Microbiome Research Group, Institute of Medical Microbiology, RWTH Aachen University, Aachen, Germany
| | - Tony Bruns
- Department of Internal Medicine III, RWTH Aachen University, Aachen, Germany
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15
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Nevens F, Trauner M, Manns MP. Primary biliary cholangitis as a roadmap for the development of novel treatments for cholestatic liver diseases †. J Hepatol 2023; 78:430-441. [PMID: 36272496 DOI: 10.1016/j.jhep.2022.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 10/07/2022] [Accepted: 10/07/2022] [Indexed: 11/16/2022]
Abstract
The discovery of nuclear receptors and transporters has contributed to the development of new drugs for the treatment of cholestatic liver diseases. Particular progress has been made in the development of second-line therapies for PBC. These new drugs can be separated into compounds primarily targeting cholestasis, molecules targeting fibrogenesis and molecules with immune-mediated action. Finally, drugs aimed at symptom relief (pruritus and fatigue) are also under investigation. Obeticholic acid is currently the only approved second-line therapy for PBC. Drugs in the late phase of clinical development include peroxisome proliferator-activated receptor agonists, norursodeoxycholic acid and NADPH oxidase 1/4 inhibitors.
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Affiliation(s)
- Frederik Nevens
- Department of Gastroenterology and Hepatology, University Hospital KU Leuven, Belgium; Centre of ERN RARE-LIVER.
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Austria; Centre of ERN RARE-LIVER
| | - Michael P Manns
- Hannover Medical School, Hannover, Germany; Centre of ERN RARE-LIVER
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16
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Felli E, Nulan Y, Selicean S, Wang C, Gracia-Sancho J, Bosch J. Emerging Therapeutic Targets for Portal Hypertension. CURRENT HEPATOLOGY REPORTS 2023; 22:51-66. [PMID: 36908849 PMCID: PMC9988810 DOI: 10.1007/s11901-023-00598-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/18/2023] [Indexed: 02/13/2023]
Abstract
Purpose of Review Portal hypertension is responsible of the main complications of cirrhosis, which carries a high mortality. Recent treatments have improved prognosis, but this is still far from ideal. This paper reviews new potential therapeutic targets unveiled by advances of key pathophysiologic processes. Recent Findings Recent research highlighted the importance of suppressing etiologic factors and a safe lifestyle and outlined new mechanisms modulating portal pressure. These include intrahepatic abnormalities linked to inflammation, fibrogenesis, vascular occlusion, parenchymal extinction, and angiogenesis; impaired regeneration; increased hepatic vascular tone due to sinusoidal endothelial dysfunction with insufficient NO availability; and paracrine liver cell crosstalk. Moreover, pathways such as the gut-liver axis modulate splanchnic vasodilatation and systemic inflammation, exacerbate liver fibrosis, and are being targeted by therapy. We have summarized studies of new agents addressing these targets. Summary New agents, alone or in combination, allow acting in complementary mechanisms offering a more profound effect on portal hypertension while simultaneously limiting disease progression and favoring regression of fibrosis and of cirrhosis. Major changes in treatment paradigms are anticipated.
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Affiliation(s)
- Eric Felli
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
- Department for BioMedical Research, Hepatology, University of Bern, 3012 Bern, Switzerland
| | - Yelidousi Nulan
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
- Department for BioMedical Research, Hepatology, University of Bern, 3012 Bern, Switzerland
| | - Sonia Selicean
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
- Department for BioMedical Research, Hepatology, University of Bern, 3012 Bern, Switzerland
| | - Cong Wang
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
- Department for BioMedical Research, Hepatology, University of Bern, 3012 Bern, Switzerland
| | - Jordi Gracia-Sancho
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
- Department for BioMedical Research, Hepatology, University of Bern, 3012 Bern, Switzerland
- Liver Vascular Biology Research Group, CIBEREHD, IDIBAPS Research Institute, 08036 Barcelona, Spain
| | - Jaume Bosch
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
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17
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Bittermann T. The Potential Synergy of Using Interventional and Observational Data to Study Clinically Meaningful, Long-term Outcomes in Rare Liver and Luminal Diseases. Gastroenterology 2022; 163:1491-1492. [PMID: 36181834 DOI: 10.1053/j.gastro.2022.09.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 09/26/2022] [Indexed: 12/02/2022]
Affiliation(s)
- Therese Bittermann
- Department of Medicine, Division of Gastroenterology & Hepatology and, Department of Biostatistics, Epidemiology & Informatics, University of Pennsylvania, Philadelphia, Pennsylvania.
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18
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Buchanan-Peart KA, Levy C. Novel Therapies in Primary Biliary Cholangitis: What Is in the Pipeline? Clin Liver Dis 2022; 26:747-764. [PMID: 36270727 DOI: 10.1016/j.cld.2022.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Primary biliary cholangitis is a chronic autoimmune disease characterized by inflammation and the progressive destruction of small intrahepatic bile ducts. Current first-line treatment includes ursodeoxycholic acid; however, a significant number of patients have an inadequate response to therapy. These patients are at risk of liver failure requiring liver transplantation and experience a poor quality of life due to refractory symptoms. This manuscript aims to shed light on the current and prospective treatment options that may slow disease progression and improve these patients' symptoms.
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Affiliation(s)
- Keri-Ann Buchanan-Peart
- Division of Digestive Health and Liver Diseases, University of Miami Miller School of Medicine, 1500 Northwest 12th Avenue, Suite 1101-E, Miami, FL 33136, USA; Department of Internal Medicine, Jackson Memorial Hospital, 1611 NW 12th Avenue, Miami, FL 33136, USA
| | - Cynthia Levy
- Division of Digestive Health and Liver Diseases, Schiff Center for Liver Diseases, University of Miami Miller School of Medicine, 1500 Northwest 12th Avenue, Suite 1101-E, Miami, FL 33136, USA.
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Shaker M, Mansour N, John BV. Primary Biliary Cholangitis in Males: Pathogenesis, Clinical Presentation, and Prognosis. Clin Liver Dis 2022; 26:643-655. [PMID: 36270721 DOI: 10.1016/j.cld.2022.06.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Primary biliary cholangitis (PBC) is an immune-mediated chronic liver disease characterized by progressive cholestasis, bile duct destruction, biliary fibrosis, and cirrhosis. Patients who respond to ursodeoxycholic acid have an expected survival similar to the general population. Although PBC primarily affects females, the prevalence in males is higher than was previously believed, with contemporary studies suggesting a female-to-male ratio of 4-6:1. A diagnosis of PBC is often delayed among males because of the myth that PBC is rare in males.
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Affiliation(s)
- Mina Shaker
- Division of Hepatology, Miami VA Medical Center 1201 NW 16th Street, Miami, FL 33125 USA.
| | - Natalie Mansour
- Division of Hepatology, Miami VA Medical Center 1201 NW 16th Street, Miami, FL 33125 USA
| | - Binu V John
- Division of Hepatology, Miami VA Medical Center 1201 NW 16th Street, Miami, FL 33125 USA; Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA
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20
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De Vincentis A, D'Amato D, Cristoferi L, Gerussi A, Malinverno F, Lleo A, Colapietro F, Marra F, Galli A, Fiorini C, Coco B, Brunetto M, Niro GA, Cotugno R, Saitta C, Cozzolongo R, Losito F, Giannini EG, Labanca S, Marzioni M, Marconi G, Morgando A, Pellicano R, Vanni E, Cazzagon N, Floreani A, Chessa L, Morelli O, Muratori L, Pellicelli A, Pompili M, Ponziani F, Tortora A, Rosina F, Russello M, Cannavò M, Simone L, Storato S, Viganò M, Abenavoli L, D'Antò M, De Gasperi E, Distefano M, Scifo G, Zolfino T, Calvaruso V, Cuccorese G, Palitti VP, Sacco R, Bertino G, Frazzetto E, Alvaro D, Mulinacci G, Palermo A, Scaravaglio M, Terracciani F, Galati G, Ronca V, Zuin M, Claar E, Izzi A, Picardi A, Invernizzi P, Vespasiani‐Gentilucci U, Carbone M. Predictors of serious adverse events and non-response in cirrhotic patients with primary biliary cholangitis treated with obeticholic acid. Liver Int 2022; 42:2453-2465. [PMID: 35932095 PMCID: PMC9804305 DOI: 10.1111/liv.15386] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/24/2022] [Accepted: 06/23/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND & AIMS Obeticholic acid (OCA) has recently been restricted in patients with primary biliary cholangitis (PBC) with "advanced cirrhosis" because of its narrow therapeutic index. We aimed to better define the predicting factors of hepatic serious adverse events (SAEs) and non-response in cirrhotic patients undergoing OCA therapy. METHODS Safety and efficacy of treatment were evaluated in a cohort of consecutive PBC cirrhotic patients started with OCA. OCA response was evaluated according to the Poise criteria. Risk factors for hepatic SAEs and non-response were reported as risk ratios (RR) with 95% confidence intervals (CIs). RESULTS One hundred PBC cirrhotics were included, 97 Child-Pugh class A and 3 class B. Thirty-one had oesophageal varices and 5 had a history of ascites. Thirty-three per cent and 32% of patients achieved a biochemical response at 6 and 12 months respectively. Male sex (adjusted-RR 1.75, 95%CI 1.42-2.12), INR (1.37, 1.00-1.87), Child-Pugh score (1.79, 1.28-2.50), MELD (1.17, 1.04-1.30) and bilirubin (1.83, 1.11-3.01) were independently associated with non-response to OCA. Twenty-two patients discontinued OCA within 12 months: 10 for pruritus, 9 for hepatic SAEs (5 for jaundice and/or ascitic decompensation; 4 for upper digestive bleeding). INR (adjusted-RR 1.91, 95%CI 1.10-3.36), lower albumin levels (0.18, 0.06-0.51), Child-Pugh score (2.43, 1.50-4.04), history of ascites (3.5, 1.85-6.5) and bilirubin (1.30, 1.05-1.56), were associated with hepatic SAEs. A total bilirubin≥1.4 mg/dl at baseline was the most accurate biochemical predictor of hepatic SAEs under OCA. CONCLUSIONS An accurate baseline assessment is crucial to select cirrhotic patients who can benefit from OCA. Although OCA is effective in one third of cirrhotics, bilirubin level ≥1.4 mg/dl should discourage from its use.
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Affiliation(s)
| | - Daphne D'Amato
- Gastroenterology Unit, Città della salute e della scienzaTurinItaly
| | - Laura Cristoferi
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | - Alessio Gerussi
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | - Federica Malinverno
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | - Ana Lleo
- Internal Medicine and Hepatology, Humanitas Clinical and Research Center IRCCSHumanitas UniversityMilanItaly
| | - Francesca Colapietro
- Internal Medicine and Hepatology, Humanitas Clinical and Research Center IRCCSHumanitas UniversityMilanItaly
| | - Fabio Marra
- Internal Medicine and Hepatology Unit, Department of Experimental and Clinical MedicineUniversity of FirenzeFirenzeItaly
| | - Andrea Galli
- Department of Experimental and Clinical Biochemical SciencesUniversity of FlorenceFlorenceItaly
| | - Cecilia Fiorini
- Department of Experimental and Clinical Biochemical SciencesUniversity of FlorenceFlorenceItaly
| | - Barbara Coco
- Hepatology Unit, University Hospital of PisaPisaItaly
| | | | - Grazia Anna Niro
- Gastroenterology Unit, Fondazione Casa Sollievo Della Sofferenza IRCCSSan Giovanni RotondoItaly
| | - Rosa Cotugno
- Gastroenterology Unit, Fondazione Casa Sollievo Della Sofferenza IRCCSSan Giovanni RotondoItaly
| | - Carlo Saitta
- Division of Medicine and HepatologyUniversity Hospital of Messina “Policlinico G. Martino”MessinaItaly
| | - Raffaele Cozzolongo
- Gastroenterology UnitNational Institute of Gastroenterology “S de Bellis” Research HospitalCastellana GrotteItaly
| | - Francesco Losito
- Gastroenterology UnitNational Institute of Gastroenterology “S de Bellis” Research HospitalCastellana GrotteItaly
| | - Edoardo Giovanni Giannini
- Gastroenterology Unit, Department of Internal MedicineUniversity of Genova, IRCCS Ospedale Policlinico San MartinoGenovaItaly
| | - Sara Labanca
- Gastroenterology Unit, Department of Internal MedicineUniversity of Genova, IRCCS Ospedale Policlinico San MartinoGenovaItaly
| | - Marco Marzioni
- Clinic of Gastroenterology and HepatologyUniversità Politecnica delle MarcheAnconaItaly
| | - Giulia Marconi
- Clinic of Gastroenterology and HepatologyUniversità Politecnica delle MarcheAnconaItaly
| | - Anna Morgando
- Gastroenterology Unit, Città della salute e della scienzaTurinItaly
| | | | - Ester Vanni
- Gastroenterology Unit, Città della salute e della scienzaTurinItaly
| | - Nora Cazzagon
- Gastroenterology Unit, Department of Surgery, Oncology and GastroenterologyPadua University HospitalPaduaItaly
| | - Annarosa Floreani
- Gastroenterology Unit, Department of Surgery, Oncology and GastroenterologyPadua University HospitalPaduaItaly
| | - Luchino Chessa
- Liver Unit, University Hospital of CagliariCagliariItaly
| | - Olivia Morelli
- Clinic of Gastroenterology and Hepatology, Department of MedicineUniversità degli Studi di PerugiaPerugiaItaly
| | - Luigi Muratori
- DIMEC Università di Bologna, Policlinico di Sant'OrsolaBolognaItaly
| | | | - Maurizio Pompili
- Internal Medicine and Hepatology Unit, Policlinico GemelliSapienza UniversityRomeItaly
| | - Francesca Ponziani
- Internal Medicine and Hepatology Unit, Policlinico GemelliSapienza UniversityRomeItaly
| | - Annalisa Tortora
- Internal Medicine and Hepatology Unit, Policlinico GemelliSapienza UniversityRomeItaly
| | | | | | | | - Loredana Simone
- Department of GastroenterologyUniversity Hospital Sant'AnnaFerraraItaly
| | - Silvia Storato
- IRCCS Sacro Cuore Institute Don Calabria, GastroenterologyNegrarItaly
| | - Mauro Viganò
- Hepatology Unit, San Giuseppe HospitalMilanItaly
| | - Ludovico Abenavoli
- Department of Health SciencesUniversity “Magna Graecia” of CatanzaroItaly
| | - Maria D'Antò
- Hepatology Unit, Santa Maria delle Grazie HospitalPozzuoliItaly
| | - Elisabetta De Gasperi
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico – Division of Gastroenterology and Hepatology – CRC “A.M. and A. Migliavacca” Center for Liver DiseaseMilanItaly
| | - Marco Distefano
- Department of Infectious DiseasesUmberto I HospitalSyracuseItaly
| | - Gaetano Scifo
- Department of Infectious DiseasesUmberto I HospitalSyracuseItaly
| | - Teresa Zolfino
- Department of GastroenterologyBrotzu HospitalCagliariItaly
| | | | | | | | | | - Gaetano Bertino
- Gastroenterology and Hepatology UnitUniversity Hospital Policlinico Vittorio EmanueleCataniaItaly
| | - Evelise Frazzetto
- Gastroenterology and Hepatology UnitUniversity Hospital Policlinico Vittorio EmanueleCataniaItaly
| | - Domenico Alvaro
- Department of Translational and Precision MedicineUniversity La SapienzaRomeItaly
| | - Giacomo Mulinacci
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | - Andrea Palermo
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | - Miki Scaravaglio
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | | | - Giovanni Galati
- Internal Medicine and HepatologyUniversity Campus Bio‐Medico of RomeRomeItaly
| | - Vincenzo Ronca
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | - Massimo Zuin
- Liver and Gastroenterology Unit, Department of Health SciencesUniversita’ degli Studi di MilanoMilanItaly,ASST Santi Paolo e CarloUniversity Hospital San PaoloMilanItaly
| | | | - Antonio Izzi
- Department of Infectious DiseasesD. Cotugno HospitalNapoliItaly
| | - Antonio Picardi
- Internal Medicine and HepatologyUniversity Campus Bio‐Medico of RomeRomeItaly
| | - Pietro Invernizzi
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
| | | | - Marco Carbone
- Division of Gastroenterology, Centre for Autoimmune Liver Diseases, Department of Medicine and SurgeryUniversity of Milano‐Bicocca, European Reference Network on Hepatological Diseases (ERN RARE‐LIVER), San Gerardo HospitalMonzaItaly
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21
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Londoño MC, Díaz-González Á. Predicting liver-related serious adverse events in patients with primary biliary cholangitis-related cirrhosis treated with obeticholic acid. Liver Int 2022; 42:2356-2359. [PMID: 36162085 DOI: 10.1111/liv.15379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 02/13/2023]
Affiliation(s)
- Maria-Carlota Londoño
- Liver Unit, Hospital Clínic de Barcelona, Health Care Provider of the European Reference Network on Rare Liver Disorders (ERN-Liver), Institut d' Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Centro de investigación biomédica en Red de Enfermedades Hepáticas y Digestivas, CIBERehd, University of Barcelona, Barcelona, Spain
| | - Álvaro Díaz-González
- Gastroenterology and Hepatology Department, Clinical and Translational Research in Digestive Diseases Group, Valdecilla Research Institute (IDIVAL), Marqués de Valdecilla University Hospital, Santander, Spain
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22
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Cai J, Rimal B, Jiang C, Chiang JYL, Patterson AD. Bile acid metabolism and signaling, the microbiota, and metabolic disease. Pharmacol Ther 2022; 237:108238. [PMID: 35792223 DOI: 10.1016/j.pharmthera.2022.108238] [Citation(s) in RCA: 73] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/13/2022] [Accepted: 06/27/2022] [Indexed: 11/24/2022]
Abstract
The diversity, composition, and function of the bacterial community inhabiting the human gastrointestinal tract contributes to host health through its role in producing energy or signaling molecules that regulate metabolic and immunologic functions. Bile acids are potent metabolic and immune signaling molecules synthesized from cholesterol in the liver and then transported to the intestine where they can undergo metabolism by gut bacteria. The combination of host- and microbiota-derived enzymatic activities contribute to the composition of the bile acid pool and thus there can be great diversity in bile acid composition that depends in part on the differences in the gut bacteria species. Bile acids can profoundly impact host metabolic and immunological functions by activating different bile acid receptors to regulate signaling pathways that control a broad range of complex symbiotic metabolic networks, including glucose, lipid, steroid and xenobiotic metabolism, and modulation of energy homeostasis. Disruption of bile acid signaling due to perturbation of the gut microbiota or dysregulation of the gut microbiota-host interaction is associated with the pathogenesis and progression of metabolic disorders. The metabolic and immunological roles of bile acids in human health have led to novel therapeutic approaches to manipulate the bile acid pool size, composition, and function by targeting one or multiple components of the microbiota-bile acid-bile acid receptor axis.
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Affiliation(s)
- Jingwei Cai
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Bipin Rimal
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Changtao Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, PR China
| | - John Y L Chiang
- Department of Integrative Medical Sciences, College of Medicine, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Andrew D Patterson
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, USA.
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23
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Panzitt K, Zollner G, Marschall HU, Wagner M. Recent advances on FXR-targeting therapeutics. Mol Cell Endocrinol 2022; 552:111678. [PMID: 35605722 DOI: 10.1016/j.mce.2022.111678] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 12/25/2022]
Abstract
The bile acid receptor FXR has emerged as a bona fide drug target for chronic cholestatic and metabolic liver diseases, ahead of all non-alcoholic fatty liver disease (NAFLD). FXR is highly expressed in the liver and intestine and activation at both sites differentially contributes to its desired metabolic effects. Unrestricted FXR activation, however, also comes along with undesired effects such as a pro-atherogenic lipid profile, pruritus and hepatocellular toxicity under certain conditions. Several pre-clinical studies have confirmed the potency of FXR activation for cholestatic and metabolic liver diseases, but overall it remains still open whether selective activation of intestinal FXR is advantageous over pan-FXR activation and whether restricted or modulated FXR activation can limit some of the side effects. Even more, FXR antagonist also bear the potential as intestinal-selective drugs in NAFLD models. In this review we will discuss the molecular prerequisites for FXR activation, pan-FXR activation and intestinal FXR in/activation from a therapeutic point of view, different steroidal and non-steroidal FXR agonists, ways to restrict FXR activation and finally what we have learned from pre-clinical models and clinical trials with different FXR therapeutics.
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Affiliation(s)
- Katrin Panzitt
- Research Unit for Translational Nuclear Receptor Research, Medical University Graz, Graz, Austria; Division of Gastroenterology and Hepatology, Medical University Graz, Graz, Austria
| | - Gernot Zollner
- Division of Gastroenterology and Hepatology, Medical University Graz, Graz, Austria
| | - Hanns-Ulrich Marschall
- Department of Molecular and Clinical Medicine/Wallenberg Laboratory, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Martin Wagner
- Research Unit for Translational Nuclear Receptor Research, Medical University Graz, Graz, Austria; Division of Gastroenterology and Hepatology, Medical University Graz, Graz, Austria.
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24
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Bile acid metabolism and FXR-mediated effects in human cholestatic liver disorders. Biochem Soc Trans 2022; 50:361-373. [PMID: 35191955 DOI: 10.1042/bst20210658] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/28/2022] [Accepted: 02/07/2022] [Indexed: 02/06/2023]
Abstract
Intrahepatic cholestasis is the main feature of a group of liver diseases that are characterized by hepatic and systemic accumulation of bile acids due to impaired excretion of bile, based on inflammation of intrahepatic and extrahepatic bile ducts or dysfunction of hepatobiliary transport proteins. The nuclear bile acid sensor farnesoid X receptor (FXR) is central for the regulation of bile acid turnover, including synthesis, hepatic excretion and intestinal and hepatic uptake. Several drugs targeting FXR have been developed for the treatment of cholestatic liver diseases, and so far one of them has been granted conditional approval. In this review, we will discuss the current knowledge and the clinical and experimental data available on agents affecting FXR and bile acid turnover.
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25
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Abstract
Cholestatic and non-alcoholic fatty liver disease (NAFLD) share several key pathophysiological mechanisms which can be targeted by novel therapeutic concepts that are currently developed for both areas. Nuclear receptors (NRs) are ligand-activated transcriptional regulators of key metabolic processes including hepatic lipid and glucose metabolism, energy expenditure and bile acid (BA) homoeostasis, as well as inflammation, fibrosis and cellular proliferation. Dysregulation of these processes contributes to the pathogenesis and progression of cholestatic as well as fatty liver disease, placing NRs at the forefront of novel therapeutic approaches. This includes BA and fatty acid activated NRs such as farnesoid-X receptor (FXR) and peroxisome proliferator-activated receptors, respectively, for which high affinity therapeutic ligands targeting specific or multiple isoforms have been developed. Moreover, novel liver-specific ligands for thyroid hormone receptor beta 1 complete the spectrum of currently available NR-targeted drugs. Apart from FXR ligands, BA signalling can be targeted by mimetics of FXR-activated fibroblast growth factor 19, modulation of their enterohepatic circulation through uptake inhibitors in hepatocytes and enterocytes, as well as novel BA derivatives undergoing cholehepatic shunting (instead of enterohepatic circulation). Other therapeutic approaches more directly target inflammation and/or fibrosis as critical events of disease progression. Combination strategies synergistically targeting metabolic disturbances, inflammation and fibrosis may be ultimately necessary for successful treatment of these complex and multifactorial disorders.
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Affiliation(s)
- Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Claudia Daniela Fuchs
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
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26
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Aitcheson G, Cezar C, John I, John BV. Update on the Evaluation and Management of Portal Hypertension. Gastroenterol Hepatol (N Y) 2021; 17:569-578. [PMID: 35465066 PMCID: PMC9021177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The development of clinically significant portal hypertension (CSPH) in patients with chronic liver disease is an important predictor of varices, variceal hemorrhage, ascites, hepatic encephalopathy, and death. The nomenclature of compensated advanced chronic liver disease, revised from compensated cirrhosis, recognizes the importance of portal hypertension (PH), rather than the histologic finding of cirrhosis, in clinical outcomes. Recent advances in the field have focused on the development of noninvasive methods, including transient elastography (TE), magnetic resonance elastography, and multiparametric magnetic resonance imaging, for predicting PH. TE is evolving to be the most widespread clinical tool to estimate PH, with a liver stiffness (LS) measurement cutoff of greater than or equal to 25 kilopascals (kPa) ruling in CSPH, and that of less than 15 kPa combined with a platelet count of greater than 150 × 109/L ruling out CSPH. Extending utilization of TE to not only LS measurement but also splenic stiffness measurement using the same probes may augment the sensitivity of detecting CSPH and thus selecting candidates warranting endoscopic evaluation for high-risk varices. With respect to management of PH, the role of nonselective β blockers continues to evolve and may extend beyond variceal bleed in preventing decompensation and development of ascites. Statins have a burgeoning well of data supporting their use, but large, prospective, controlled trials with clinical endpoints are awaited. Further data are still warranted regarding the use of long-term albumin therapy to prevent complications of PH.
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Affiliation(s)
- Gabriella Aitcheson
- Division of Gastroenterology and Hepatology, Indiana University Medical Center, Indianapolis, Indiana
| | - Carensa Cezar
- Department of Medicine, Jackson Memorial Hospital, Miami, Florida
| | - Irene John
- American Heritage School, Plantation, Florida
| | - Binu V. John
- Division of Hepatology, Miami VA Health Care System, Miami, Florida
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida
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Obeticholic Acid Improves Aminotransferases Early during Treatment in Patients with Primary Biliary Cholangitis Not Responding to Ursodeoxycholic Acid: A Study in Clinical Practice. IMMUNO 2021. [DOI: 10.3390/immuno1040033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Obeticholic acid (OCA) improves cholestasis and is generally well tolerated in patients with primary biliary cholangitis (PBC) not responding, or intolerant, to ursodeoxycholic acid (UDCA). As PBC is mainly a cholestatic disorder, less attention is paid to aminotransferase behavior in the course of treatment. In this study we evaluated, in clinical practice, the efficacy of OCA treatment on both alkaline phosphatase (ALP) and alanine aminotransferase (ALT) using updated healthy ranges for aminotransferases. Fifteen PBC patients, non-responders to UDCA, were evaluated at baseline and during OCA treatment with serial measurement of cholestasis indexes and ALT, that were also assessed using updated normal ranges (<30 IU/L in males, <19 IU/L in females). Median ALP and ALT decreased from 2.16 to 1.27 × upper limit of normal (p = 0.003) and from 0.93 to 0.78 × upper limit of normal (p = 0.008), respectively, in the course of OCA treatment. At treatment day-15, median ALT decreased by 29.7% and ALP by 8.8%. Bilirubin and albumin were unmodified throughout treatment. Using updated normal ranges, ALT levels were normal in 6.7% of patients at baseline and in 33.3% of patients at 18 months of treatment. OCA treatment improves cholestasis and, also, indexes of hepatocyte necrosis, with a decline in necro-inflammatory activity even predating the improvement in cholestasis. Use of recalibrated healthy ranges for aminotransferases might be a useful tool to assess hepatic histological activity and its improvement with OCA treatment.
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28
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Simbrunner B, Trauner M, Reiberger T. Review article: therapeutic aspects of bile acid signalling in the gut-liver axis. Aliment Pharmacol Ther 2021; 54:1243-1262. [PMID: 34555862 PMCID: PMC9290708 DOI: 10.1111/apt.16602] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 08/29/2021] [Accepted: 08/31/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Bile acids are important endocrine modulators of intestinal and hepatic signalling cascades orchestrating critical pathophysiological processes in various liver diseases. Increasing knowledge on bile acid signalling has stimulated the development of synthetic ligands of nuclear bile acid receptors and other bile acid analogues. AIM This review summarises important aspects of bile acid-mediated crosstalk between the gut and the liver ("gut-liver axis") as well as recent findings from experimental and clinical studies. METHODS We performed a literature review on bile acid signalling, and therapeutic applications in chronic liver disease. RESULTS Intestinal and hepatic bile acid signalling pathways maintain bile acid homeostasis. Perturbations of bile acid-mediated gut-liver crosstalk dysregulate transcriptional networks involved in inflammation, fibrosis and endothelial dysfunction. Bile acids induce enterohepatic feedback signalling by the release of intestinal hormones, and regulate enterohepatic circulation. Importantly, bile acid signalling plays a central role in maintaining intestinal barrier integrity and antibacterial defense, which is particularly relevant in cirrhosis, where bacterial translocation has a profound impact on disease progression. The nuclear bile acid farnesoid X receptor (FXR) is a central intersection in bile acid signalling and has emerged as a relevant therapeutic target. CONCLUSIONS Experimental evidence suggests that bile acid signalling improves the intestinal barrier and protects against bacterial translocation in cirrhosis. FXR agonists have displayed efficacy for the treatment of cholestatic and metabolic liver disease in randomised controlled clinical trials. However, similar effects remain to be shown in advanced liver disease, particularly in patients with decompensated cirrhosis.
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Affiliation(s)
- Benedikt Simbrunner
- Division of Gastroenterology and HepatologyDepartment of Internal Medicine IIIMedical University of ViennaViennaAustria,Vienna Hepatic Hemodynamic LabMedical University of ViennaViennaAustria,Christian‐Doppler Laboratory for Portal Hypertension and Liver FibrosisMedical University of ViennaViennaAustria
| | - Michael Trauner
- Division of Gastroenterology and HepatologyDepartment of Internal Medicine IIIMedical University of ViennaViennaAustria
| | - Thomas Reiberger
- Division of Gastroenterology and HepatologyDepartment of Internal Medicine IIIMedical University of ViennaViennaAustria,Vienna Hepatic Hemodynamic LabMedical University of ViennaViennaAustria,Christian‐Doppler Laboratory for Portal Hypertension and Liver FibrosisMedical University of ViennaViennaAustria
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