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Busebee B, Watt KD, Dupuy-McCauley K, DuBrock H. Sleep disturbances in chronic liver disease. Liver Transpl 2024:01445473-990000000-00350. [PMID: 38535627 DOI: 10.1097/lvt.0000000000000369] [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: 11/13/2023] [Accepted: 03/15/2024] [Indexed: 05/03/2024]
Abstract
Sleep disturbances are common in chronic liver disease and significantly impact patient outcomes and quality of life. The severity and nature of sleep disturbances vary by liver disease etiology and severity. While there is ongoing research into the association between liver disease and sleep-wake dysfunction, the underlying pathophysiology varies and, in many cases, is poorly understood. Liver disease is associated with alterations in thermoregulation, inflammation, and physical activity, and is associated with disease-specific complications, such as HE, that may directly affect sleep. In this article, we review the relevant pathophysiologic processes, disease-specific sleep-wake disturbances, and clinical management of CLD-associated sleep-wake disturbances.
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Affiliation(s)
- Bradley Busebee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Kymberly D Watt
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Kara Dupuy-McCauley
- Division of Pulmonology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Hilary DuBrock
- Division of Pulmonology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
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2
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Faisal MS, Gonzalez HC, Gordon SC. Primary Biliary Cholangitis: Epidemiology, Diagnosis, and Presentation. Clin Liver Dis 2024; 28:63-77. [PMID: 37945163 DOI: 10.1016/j.cld.2023.06.005] [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] [Indexed: 11/12/2023]
Abstract
Using ursodeoxycholic acid as a standard treatment and for its ability to test for antimitochondrial antibody to accelerate diagnosis, survival of primary biliary cholangitis patients has approached that of the general population, leading to a change in nomenclature from primary biliary cirrhosis to primary biliary cholangitis to more accurately describe the disease.
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Affiliation(s)
- Muhammad Salman Faisal
- Department of Gastroenterology and Hepatology, Henry Ford Health, 2799 West Grand Boulevard, Detroit, MI 48202, USA
| | - Humberto C Gonzalez
- Department of Gastroenterology and Hepatology, Henry Ford Health, 2799 West Grand Boulevard, Detroit, MI 48202, USA; Wayne State University School of Medicine, 540 East Canfield Street, Detroit, MI 48201, USA
| | - Stuart C Gordon
- Department of Gastroenterology and Hepatology, Henry Ford Health, 2799 West Grand Boulevard, Detroit, MI 48202, USA; Wayne State University School of Medicine, 540 East Canfield Street, Detroit, MI 48201, USA.
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3
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Faisal A. Understanding fatigue and pruritus in primary biliary cholangitis. Clin Liver Dis (Hoboken) 2024; 23:e0216. [PMID: 38831766 PMCID: PMC11146472 DOI: 10.1097/cld.0000000000000216] [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: 01/04/2024] [Accepted: 04/08/2024] [Indexed: 06/05/2024] Open
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Younossi ZM, Stepanova M, Myers RP, Younossi I, Henry L. The Potential Role of Fatigue in Identifying Patients With NASH and Advanced Fibrosis Who Experience Disease Progression. Clin Gastroenterol Hepatol 2023; 21:970-977.e1. [PMID: 35533993 DOI: 10.1016/j.cgh.2022.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/06/2022] [Accepted: 04/12/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Fatigue is common in patients with advanced liver disease. We investigated fatigue and clinical outcomes among patients with advanced nonalcoholic steatohepatitis (NASH). METHODS In this study, patients with biopsy confirmed NASH and bridging fibrosis (F3) or compensated cirrhosis (F4) were followed for up to 2 years. The Chronic Liver Disease Questionnaire for Nonalcoholic Steatohepatitis (CLDQ-NASH) fatigue domain at baseline (range, 1-7; lower score indicating worse fatigue) quantified fatigue. The Cox proportional hazards model was used to study time to liver-related clinical events (progression to histologic cirrhosis or hepatic decompensation in F3, hepatic decompensation in F4). RESULTS Of the 1679 NASH patients with fibrosis, 802 had F3 and 877 had F4 (58 ± 9 years of age, 40% male, 74% type 2 diabetes). During median follow-up of 16 months (interquartile range, 14-18), 15% (n = 123) of NASH F3 patients experienced liver-related events and 3.5% (n = 31) of NASH F4 patients experienced hepatic decompensation. Mean baseline CLDQ-NASH fatigue score in F3 patients was 4.77 ± 1.36; NASH F3 patients who experienced liver-related events had lower baseline scores: 4.47 ± 1.36 vs 4.83 ± 1.35 (P = .0091). The mean fatigue score in F4 was 4.56 ± 1.44; these scores were lower in patients who decompensated in follow-up: 3.74 ± 1.31 vs 4.59 ± 1.43 (P = .0011). The association of lower fatigue scores and risk of liver-related or decompensation events was significant after adjustment for confounders (adjusted hazard ratio per 1 point in fatigue score in F3, 0.85; 95% confidence interval, 0.74-0.97; P = .02; adjusted hazard ratio in F4, 0.62; 95% confidence interval, 0.48-0.81; P = .0004). CONCLUSION Worse fatigue at baseline is associated with a higher risk of adverse clinical events in patients with NASH-related advanced fibrosis and cirrhosis.
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Affiliation(s)
- Zobair M Younossi
- Medicine Service Line, Inova Health System, Falls Church, Virginia; Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, Virginia; Center for Liver Diseases, Department of Medicine, Inova Fairfax Hospital, Falls Church, Virginia.
| | - Maria Stepanova
- Medicine Service Line, Inova Health System, Falls Church, Virginia; Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, Virginia; Center for Outcomes Research in Liver Diseases, Washington DC
| | | | - Issah Younossi
- Center for Outcomes Research in Liver Diseases, Washington DC
| | - Linda Henry
- Medicine Service Line, Inova Health System, Falls Church, Virginia; Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, Virginia; Center for Outcomes Research in Liver Diseases, Washington DC
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5
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Floreani A, Gabbia D, De Martin S. Update on the Pharmacological Treatment of Primary Biliary Cholangitis. Biomedicines 2022; 10:biomedicines10082033. [PMID: 36009580 PMCID: PMC9405864 DOI: 10.3390/biomedicines10082033] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Ursodeoxycholic acid (UDCA) is the first-line therapy used for the treatment of PBC. In recent years, new pharmacological agents have been proposed for PBC therapy to cure UDCA-non-responders. Obeticholic acid (OCA) is registered in many countries for PBC, and fibrates also seem to be effective in ameliorating biochemistry alteration and symptoms typical of PBC. Moreover, a variety of new agents, acting with different mechanisms of action, are under clinical evaluation for PBC treatment, including PPAR agonists, anti-NOX agents, immunomodulators, and mesenchymal stem cell transplantation. Since an insufficient amount of data is currently available about the effect of these novel approaches on robust clinical endpoints, such as transplant-free survival, their clinical approval needs to be supported by the consistent improvement of these parameters. The intensive research in this field will hopefully lead to a novel treatment landscape for PBC in the near future, with innovative therapies based on the combination of multiple agents acting on different pathogenetic mechanisms.
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Affiliation(s)
- Annarosa Floreani
- Department of Surgery, Oncology and Gastroenterology, University of Padova, 35131 Padova, Italy
- IRCCS Negrar, 37024 Verona, Italy
| | - Daniela Gabbia
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
| | - Sara De Martin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
- Correspondence:
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Lynch EN, Campani C, Innocenti T, Dragoni G, Biagini MR, Forte P, Galli A. Understanding fatigue in primary biliary cholangitis: From pathophysiology to treatment perspectives. World J Hepatol 2022; 14:1111-1119. [PMID: 35978669 PMCID: PMC9258253 DOI: 10.4254/wjh.v14.i6.1111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/18/2022] [Accepted: 05/28/2022] [Indexed: 02/06/2023] Open
Abstract
Fatigue is considered one of the most frequent and debilitating symptoms in primary biliary cholangitis (PBC), affecting over 50% of PBC patients. One in five patients with PBC suffer from severe fatigue, which significantly impairs quality of life. Fatigue is made up of a central and a peripheral component, whose pathophysiology is still greatly unresolved. Central fatigue is characterised by a lack of self-motivation and can manifest both in physical and mental activities (lack of intention). Peripheral fatigue includes neuromuscular dysfunction and muscle weakness (lack of ability). Peripheral fatigue could be explained by an excessive deviation from aerobic to anaerobic metabolism leading to excessive lactic acid accumulation and therefore accelerated decline in muscle function and prolonged recovery time. As opposed to itching, and with the exception of end-stage liver disease, fatigue is not related to disease progression. The objective of this review is to outline current understanding regarding the pathophysiology of fatigue, the role of comorbidities and contributing factors, the main tools for fatigue assessment, the failed therapeutic options, and future treatment perspectives for this disabling symptom. Since fatigue is an extremely common and debilitating symptom and there is still no licensed therapy for fatigue in PBC patients, further research is warranted to understand its causative mechanisms and to find an effective treatment.
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Affiliation(s)
- Erica Nicola Lynch
- Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence 50134, Italy
| | - Claudia Campani
- Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence 50134, Italy
- Department of Experimental and Clinical Medicine, University of Florence, Florence 50134, Italy
| | - Tommaso Innocenti
- Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence 50134, Italy
| | - Gabriele Dragoni
- Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence 50134, Italy
- Department of Medical Biotechnologies, University of Siena, Siena 53100, Italy
| | - Maria Rosa Biagini
- Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence 50134, Italy
| | - Paolo Forte
- Division of Gastroenterology, University Hospital “Careggi”, Florence 50134, Italy
| | - Andrea Galli
- Gastroenterology Research Unit, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence 50134, Italy
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7
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Patel R, Portone G, Lambert JA, Mak S, Alrubaiy L. Disease-modifying therapies and symptomatic management for primary biliary cholangitis. Br J Hosp Med (Lond) 2021; 82:1-9. [PMID: 34817254 DOI: 10.12968/hmed.2021.0247] [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: 11/11/2022]
Abstract
Primary biliary cholangitis is a chronic condition characterised by autoimmune destruction of intralobular bile ducts. Publications have shown widespread gaps in the care of patients with primary biliary cholangitis. This article reviews the literature regarding currently licensed first- and second-line therapies and evaluates therapeutic options for symptomatic management of primary biliary cholangitis. Ursodeoxycholic acid is recommended for all patients with primary biliary cholangitis, with obeticholic acid available as second-line therapy, both having demonstrated safety and efficacy. Potential disease-modifying therapies, such as fibrates and budesonide, require further investigation before licensing. Cholestyramine is first-line therapy for pruritus, albeit with limited evidence and common side-effects. There is no licensed therapy for primary biliary cholangitis-related fatigue; treating underlying causes where applicable is recommended. Disease-modifying and symptomatic therapies must be considered in tandem when managing patients with primary biliary cholangitis. Emerging therapies show initial promise but further randomised trials with long-term follow up are required to evaluate their efficacy as single or combination therapies.
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Affiliation(s)
- Roshni Patel
- Faculty of Medicine, Imperial College London, UK
| | | | | | - Sau Mak
- Faculty of Medicine, Imperial College London, UK
| | - Laith Alrubaiy
- Faculty of Medicine, Imperial College London, UK.,Department of Gastroenterology, St. Mark's Hospital, London, UK
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8
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Floreani A. Experimental Pharmacological Agents for the Treatment of Primary Biliary Cholangitis. J Exp Pharmacol 2020; 12:643-652. [PMID: 33364858 PMCID: PMC7751712 DOI: 10.2147/jep.s267375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 11/12/2020] [Indexed: 12/12/2022] Open
Abstract
The standard therapy for primary biliary cholangitis (PBC) is ursodeoxycholic acid (UDCA) which has shown to improve hepatic biochemistry, delay histological progression and improve transplant-free survival. Approximately 30-40% of patients do not respond or are intolerant to UDCA. Obeticholic acid, a farnesoid X receptor (FXR) agonist is the only agent approved by the Food and Drug Administration for patients who do not respond to UDCA. Recently, combination therapy with UDCA and bezafibrate has been shown to improve biochemistry and both GLOBE and UK-PBC score in patients with an inadequate response to UDCA. More recently, new pharmacological agents have been included in Phase 2 and Phase 3 trials: PPAR agonists, non-bile acid FXR agonists, anti-NOX agents, immunomodulators and mesenchymal stem cells transplantation. This review gives an overview on the current experimental pharmacological agents employed in the treatment of PBC.
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Affiliation(s)
- Annarosa Floreani
- University of Padova, Padova, Italy
- Scientific Institute for Research, Hospitalization and Healthcare, Negrar, Verona, Italy
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9
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Leung KK, Deeb M, Hirschfield GM. Review article: pathophysiology and management of primary biliary cholangitis. Aliment Pharmacol Ther 2020; 52:1150-1164. [PMID: 32813299 DOI: 10.1111/apt.16023] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/13/2020] [Accepted: 07/18/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Primary biliary cholangitis (PBC), an immune-mediated disease characterised by destruction of intrahepatic bile ducts, results in progressive damage to the biliary tree, cholestasis and ultimately advanced liver disease. In the last decade, advances in practice have improved clinical care, driven novel therapeutic options and improved risk stratification tools. AIMS To provide an overview of the disease characteristics of PBC and review a patient-centred management approach for the clinical team caring for those with PBC. METHODS We reviewed the current literature and guidelines on PBC with a focus on management and therapies. RESULTS A confident diagnosis of PBC is usually made based on serum liver tests and immune serology. Management of PBC should focus on three main 'process' pillars: (a) treat and risk-stratify through use of biochemical and prognostic criteria; (b) manage concurrent symptoms and other associated diseases; and (c) stage disease, monitor progression and prevent complications. With ongoing complexities in management, including a newly licensed therapy (obeticholic acid) and alternative non-licensed treatments and ongoing clinical trials, discussion with PBC expert centres is encouraged. CONCLUSIONS PBC is a dynamic disease wherein current treatment goals have become appropriately ambitious. Goals of care should prioritise prevention of end-stage liver disease and amelioration of patient symptom burden for all.
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Affiliation(s)
- Kristel K Leung
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, ON, Canada.,Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Maya Deeb
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, ON, Canada.,Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Gideon M Hirschfield
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, ON, Canada.,Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, Ontario, Canada
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10
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Yarnall AJ, Granic A, Waite S, Hollingsworth KG, Warren C, Vincent AE, Turnbull DM, Taylor RW, Dodds RM, Sayer AA. The feasibility of muscle mitochondrial respiratory chain phenotyping across the cognitive spectrum in Parkinson's disease. Exp Gerontol 2020; 138:110997. [PMID: 32554091 DOI: 10.1016/j.exger.2020.110997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/04/2020] [Accepted: 06/04/2020] [Indexed: 01/06/2023]
Abstract
INTRODUCTION There has been little work on the relationship between sarcopenia, a progressive skeletal muscle disorder, and age-related neurodegenerative diseases such as Parkinson's disease (PD). OBJECTIVES We aimed to determine: 1) the feasibility of characterizing skeletal muscle across a range of cognitive function in PD; 2) if muscle mitochondrial respiratory chain (MRC) function and content are preserved in older adults with PD. METHODS Sarcopenia was defined using handgrip strength, chair rise and bioimpedance analysis. MRC function was assessed using phosphorous magnetic resonance spectroscopy (MRS) by estimating τ1/2 PCr (s) (phosphocreatine half-time recovery) in the calf muscles following a bout of aerobic exercise. Biopsy of the vastus lateralis muscle was performed, and MRC content assessed by fluorescent immunohistochemistry for porin and components of MRC Complexes I and IV. RESULTS Nine participants (78% male; mean age 79.9; PD duration 3.3 years) were recruited. Four had cognitive impairment. Six participants had probable sarcopenia. Eight participants completed MRS and had mean (SD) τ1/2 PCr of 37.8 (7.6) seconds, suggesting preserved mitochondrial function. Muscle biopsies were obtained in all and the procedure was well tolerated. Porin Z-score, a proxy for mitochondrial mass, was lower than expected compared to controls (0-89% of fibres with low porin). There was a small amount of Complex I (0.16-4.59%) and Complex IV (0-3.79%) deficiency. CONCLUSIONS Detailed phenotyping, muscle biopsy and imaging was feasible and acceptable across a spectrum of cognitive function in PD. Sarcopenia was relatively common and may be associated with lower mitochondrial mass and low levels of MRC deficiency.
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Affiliation(s)
- Alison J Yarnall
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Antoneta Granic
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom; AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle upon Tyne, United Kingdom
| | - Samantha Waite
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Kieren G Hollingsworth
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; Newcastle Magnetic Resonance Centre, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Charlotte Warren
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; Wellcome Trust Centre for Mitochondrial Research, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Amy E Vincent
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; Wellcome Trust Centre for Mitochondrial Research, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Doug M Turnbull
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; Wellcome Trust Centre for Mitochondrial Research, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom; Newcastle NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Robert W Taylor
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; Wellcome Trust Centre for Mitochondrial Research, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom; Newcastle NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Richard M Dodds
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom; AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle upon Tyne, United Kingdom
| | - Avan A Sayer
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom; AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle upon Tyne, United Kingdom.
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11
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Cheung SM, Keenan K, Senn N, Hutcheon G, Chan K, Erwig L, Schrepf A, Dospinescu P, Gray S, Waiter G, He J, Basu N. Metabolic and Structural Skeletal Muscle Health in Systemic Lupus Erythematosus-Related Fatigue: A Multimodal Magnetic Resonance Imaging Study. Arthritis Care Res (Hoboken) 2020; 71:1640-1646. [PMID: 30629805 DOI: 10.1002/acr.23833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 01/08/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To investigate the potential structural and metabolic role of skeletal muscle in systemic lupus erythematosus (SLE)-related fatigue. METHODS A case-control, multimodal magnetic resonance imaging (MRI) study was conducted. Cases were patients with inactive SLE who reported chronic fatigue. Controls were age- and sex-matched healthy members of the general population. Patients were clinically characterized and then underwent a 3T whole-body MRI scan. Resting and dynamic 31 P MRI spectroscopy of the calf muscles was applied, from which phosphocreatine (PCr) recovery halftime, a marker of mitochondrial dysfunction, was computed. In addition, microstructural sequences (T1-weighted anatomic images, T2 mapping, and diffusion tensor imaging) were acquired. Descriptive statistics evaluated group differences and within-case physical fatigue correlations were explored. RESULTS Of the 37 recruits (mean age 43.8 years, 89.2% female), cases (n = 19) reported higher levels of physical fatigue, pain, depression, and sleep disturbance compared to the control group (P < 0.0001). PCr was greater (P = 0.045) among cases (mean ± SD 33.0 ± 9.0 seconds) compared to controls (mean ± SD 27.1 ± 6.6 seconds). No microstructural group differences were observed. Within cases, physical fatigue did not correlate with PCr (r = -0.28, P = 0.25). CONCLUSION We report preliminary data demonstrating greater skeletal muscle mitochondrial dysfunction among fatigued patients with SLE compared to healthy controls.
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Affiliation(s)
| | | | | | | | | | - Lars Erwig
- University of Aberdeen, Aberdeen, and GlaxoSmithKline, Stevenage, UK
| | | | | | | | | | - Jiabao He
- University of Aberdeen, Aberdeen, UK
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12
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Khanna A, Jopson L, Howel D, Bryant A, Blamire A, Newton JL, Jones DE. Rituximab Is Ineffective for Treatment of Fatigue in Primary Biliary Cholangitis: A Phase 2 Randomized Controlled Trial. Hepatology 2019; 70:1646-1657. [PMID: 29790196 DOI: 10.1002/hep.30099] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/16/2018] [Accepted: 05/12/2018] [Indexed: 12/16/2022]
Abstract
Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease. Half of patients experience debilitating fatigue, which is currently untreatable. Previous studies have shown muscle bioenergetic abnormalities in PBC, including increased muscle acidosis with exercise linked to the antimitochondrial antibody (AMA) diagnostic of the disease, and reduced anaerobic threshold. In this study we addressed the hypothesis that fatigue in PBC is driven by muscle bioenergetic abnormality related to AMA, and that AMA reduction with B-cell depletion therapy will improve fatigue. In our single-center phase 2 randomized controlled trial, 57 participants aged 18 years or older with PBC and moderate to severe fatigue were randomized to receive two doses of either rituximab (1000 mg) or saline (placebo). The primary outcome measure was fatigue severity assessed using the PBC-40 fatigue domain at 3 months. Secondary outcome measures included patient-reported outcomes and immunological and bioenergetics disease parameters. Experimental outcomes included biochemical markers of disease severity. Improvement in fatigue score at 3 months was seen in both arms, with no significant difference (adjusted mean difference -0.9 [95% confidence interval -4.6 to 3.1]). Little difference was observed in other patient-reported outcomes or physical activity. Significant anaerobic threshold improvement was seen in the rituximab group, only but this was not associated with fatigue improvement. No treatment-emergent serious adverse events were seen. Conclusions: Rituximab was safe over the 12-month study period but showed no evidence of effectiveness for the treatment of fatigue in PBC. Anaerobic threshold improvement was seen, potentially linking AMA with muscle bioenergetics dysfunction; however, this was not related to improvement in fatigue. Rituximab had some evidence of a beneficial effect on alkaline phosphatase levels in this largely ursodeoxycholic acid (UDCA)-responding, early-disease stage cohort. (Hepatology 2018; 00:000-000).
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Affiliation(s)
- Amardeep Khanna
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
- NIHR Biomedical Research Center, Newcastle University, Newcastle upon Tyne, United Kingdom
- Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Laura Jopson
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
- NIHR Biomedical Research Center, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Denise Howel
- Institute of Health & Society, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Andrew Bryant
- Institute of Health & Society, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Andrew Blamire
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
- NIHR Biomedical Research Center, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Julia L Newton
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
- NIHR Biomedical Research Center, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - David E Jones
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
- NIHR Biomedical Research Center, Newcastle University, Newcastle upon Tyne, United Kingdom
- Freeman Hospital, Newcastle upon Tyne, United Kingdom
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Abstract
Autoreactive B cells can promote autoimmunity through antigen presentation to autoreactive T cells, production of autoantibodies, generation of cytokines promoting T cell activation and differentiation, and inhibition of regulatory T cells and B cells. Here, the authors highlight studies pertaining to B cell mechanisms associated with disease pathogenesis and outcomes in autoimmune hepatitis and the immune-mediated cholangiopathies (primary biliary cholangitis, primary sclerosing cholangitis, and biliary atresia). The vast majority of investigations focus on autoantibodies and future research endeavors should include deciphering the role of the B cell in T cell activation (through antigen presentation, cytokine/chemokine production, and inhibition of regulation). Targeting B cell mechanisms in the treatment of autoimmune liver diseases is also highlighted.
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Affiliation(s)
- Sarah A. Taylor
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Ann & Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - David N. Assis
- Section of Digestive Diseases, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Cara L. Mack
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Digestive Health Institute, Children’s Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado
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14
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Lee JY, Danford CJ, Trivedi HD, Tapper EB, Patwardhan VR, Bonder A. Treatment of Fatigue in Primary Biliary Cholangitis: A Systematic Review and Meta-Analysis. Dig Dis Sci 2019; 64:2338-2350. [PMID: 30632051 DOI: 10.1007/s10620-019-5457-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/03/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Fatigue is the most common complication of primary biliary cholangitis (PBC) and can be debilitating. Numerous interventions have been trialed targeting several proposed mechanisms of PBC-associated fatigue. We sought to summarize and perform a meta-analysis to determine the efficacy of these interventions. METHODS A comprehensive database search was conducted from inception through March 27, 2018. The primary outcome was proportion of fatigued patients or reduction in degree of fatigue. Adverse events were a secondary outcome. We assessed studies for risk of bias, graded quality of evidence, and used meta-analysis to obtain overall effect by pooling studies of the same class. RESULTS We identified 16 studies evaluating ursodeoxycholic acid (UDCA) (7), liver transplantation (2), serotonin reuptake inhibitors (2), colchicine (1), methotrexate (1), cyclosporine (1), modafinil (1), and obeticholic acid (1). On meta-analysis, UDCA was not associated with a reduction in risk of fatigue (RR = 0.86, 95% CI 0.69-1.08, p = 0.19, I2 = 56.2%). While liver transplantation did reduce degree of fatigue (SMD - 0.57, 95% CI - 0.89 to - 0.24, p = 0.001, I2 = 67.3%), fatigue did not return to baseline indicating the underlying cause may not be addressed. CONCLUSIONS While there is some improvement in fatigue with liver transplantation, there is a lack of high-quality evidence supporting the efficacy of any other intervention in the treatment of PBC-related fatigue. Further research into the underlying pathophysiology may help guide future trials.
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Affiliation(s)
- Jennifer Y Lee
- Department of Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Boston, MA, 02215, USA
| | - Christopher J Danford
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Dana 603, Boston, MA, 02215, USA
| | - Hirsh D Trivedi
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Dana 603, Boston, MA, 02215, USA
| | - Elliot B Tapper
- Division of Gastroenterology and Hepatology, University Hospital, University of Michigan, Floor 2, Room 2B353, 1500 E. Medical Center Dr SPC 5051, Ann Arbor, MI, 48109-5051, USA
| | - Vilas R Patwardhan
- Liver Center, Autoimmune and Cholestatic Liver Disease Program, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Alan Bonder
- Liver Center, Autoimmune and Cholestatic Liver Disease Program, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA.
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Phaw NA, Jones DEJ. PBC: Better Solutions to Beat Feeling Beat. Dig Dis Sci 2019; 64:2075-2077. [PMID: 30830519 DOI: 10.1007/s10620-019-05552-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Naw April Phaw
- Institute of Cellular Medicine, Newcastle University, 4th Floor William Leech Building , Medical School, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK
| | - David E J Jones
- Institute of Cellular Medicine, Newcastle University, 4th Floor William Leech Building , Medical School, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK.
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16
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Swain MG, Jones DEJ. Fatigue in chronic liver disease: New insights and therapeutic approaches. Liver Int 2019; 39:6-19. [PMID: 29935104 DOI: 10.1111/liv.13919] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/20/2018] [Indexed: 02/07/2023]
Abstract
The management of fatigue associated with chronic liver disease is a complex and major clinical challenge. Although fatigue can complicate many chronic diseases, it is particularly common in diseases with an inflammatory component. Fatigue can have both peripheral (i.e., neuromuscular) and central (i.e., resulting from changes in neurotransmission within the brain) causes. However, fatigue in chronic liver disease has strong social/contextual components and is often associated with behavioural alterations including depression and anxiety. Given the increasing awareness of patient-reported outcomes as important components of treatment outcomes and clinical research, there is a growing need to better understand and manage this poorly understood yet debilitating symptom. Although several pathophysiological mechanisms for explaining the development of fatigue have been generated, our understanding of fatigue in patients with chronic liver disease remains incomplete. A better understanding of the pathways and neurotransmitter systems involved may provide specific directed therapies. Currently, the management of fatigue in chronic liver disease can involve a combined use of methods to beneficially alter behavioural components and pharmacological interventions, of which several treatments have potential for the improved management of fatigue in chronic liver disease. However, evidence and consensus are lacking on the best approach and the most appropriate biochemical target(s) whilst clinical trials to address this issue have been few and limited by small sample size. In this review, we outline current understanding of the impact of fatigue and related symptoms in chronic liver disease, discuss theories of pathogenesis, and examine current and emerging approaches to its treatment.
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Affiliation(s)
- Mark G Swain
- Calgary Liver Unit, Division of Gastroenterology and Hepatology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - David E J Jones
- Institute of Cellular Medicine, University of Newcastle, Newcastle upon Tyne, UK
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17
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Abstract
BACKGROUND Loss of muscle mass and muscle weakness are common complications to cirrhosis and are associated with increased morbidity and mortality. Therefore, physical exercise may benefit people with cirrhosis. OBJECTIVES To assess the beneficial and harmful effects of physical exercise versus sham exercise or no exercise for people with cirrhosis. SEARCH METHODS We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, and three other databases, including manual searches through reference lists, abstracts, and presentations at conferences and meetings, Google Scholar, and online trial registers in February 2018. SELECTION CRITERIA We included randomised clinical trials regardless of publication status or language. Inclusion criteria were cirrhosis irrespective of the aetiology or stage. Interventions were physical exercise compared with sham exercise or no intervention. DATA COLLECTION AND ANALYSIS Three review authors independently extracted data. We undertook meta-analyses and presented results using risk ratios (RR) for dichotomous outcomes and mean differences (MD) for continuous outcomes, both with 95% confidence intervals (CI) and I2 values as markers of imprecision and heterogeneity. We assessed bias control using the Cochrane Hepato-Biliary Group domains and determined the credibility of the evidence using GRADE. MAIN RESULTS We included six randomised clinical trials with 173 participants. All participants had Child-Pugh stage A or B cirrhosis. The intervention groups participated in eight to 14 weeks of physical exercise (aerobic: three trials; resistance: one trial; or aerobic plus resistance training: two trials). Control groups underwent sham exercise (supervised relaxation: one trial) or no intervention (five trials). None of the 89 participants allocated to exercise versus two of 84 participants in the control group died (RR 0.19, 95% CI 0.01 to 3.73; moderate-quality evidence). The cause of death was acute-on-chronic liver disease for both participants. Nine participants in the exercise group and 13 in the control group experienced serious adverse events (RR 0.61, 95% CI 0.19 to 1.94; low-quality evidence).Physical exercise showed no beneficial or detrimental effect on health-related quality of life assessed by the Chronic Liver Disease Questionnaire (MD 0.11, 95% CI -0.44 to 0.67; low-quality evidence). Likewise, physical exercise had no clear effect on physical fitness measured by peak exercise oxygen uptake (MD 0.3 mL/kg/minute, 95 % CI -2.74 to 3.35; low-quality evidence) and Six-Minute Walk Test (MD 56.06 min, 95% CI -9.14 to 121.26; very low-quality evidence). Physical exercise showed no clear effect on mid-thigh circumference (MD 1.76 cm, 95% CI -0.26 to 3.77; low-quality evidence), but showed an increase in mid-arm circumference (MD 2.61 cm, 95% CI 0.36 to 4.85; low-quality evidence). AUTHORS' CONCLUSIONS We found no clear beneficial or harmful effect of physical exercise on mortality, morbidity, or health-related quality of life. Further evidence is needed to evaluate the beneficial and harmful effects of physical exercise on clinical outcomes.
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Affiliation(s)
- Luise Aamann
- Aarhus University HospitalDepartment of Hepatology and GastroenterologyPalle Juul‐Jensens Boulevard 99Aarhus8200 NDenmark
| | - Gitte Dam
- Aarhus University HospitalDepartment of Hepatology and GastroenterologyPalle Juul‐Jensens Boulevard 99Aarhus8200 NDenmark
| | - Anders R Rinnov
- Rigshospitalet, Copenhagen University HospitalCentre for Physical Activity ResearchBlegdamsvej 9CopenhagenDenmark
| | - Hendrik Vilstrup
- Aarhus University HospitalDepartment of Hepatology and GastroenterologyPalle Juul‐Jensens Boulevard 99Aarhus8200 NDenmark
| | - Lise Lotte Gluud
- Copenhagen University Hospital HvidovreGastrounit, Medical DivisionKettegaards Alle 30HvidovreDenmark2650
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18
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Dodds RM, Davies K, Granic A, Hollingsworth KG, Warren C, Gorman G, Turnbull DM, Sayer AA. Mitochondrial respiratory chain function and content are preserved in the skeletal muscle of active very old men and women. Exp Gerontol 2018; 113:80-85. [PMID: 30266472 PMCID: PMC6224654 DOI: 10.1016/j.exger.2018.09.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/21/2018] [Accepted: 09/24/2018] [Indexed: 01/03/2023]
Abstract
Introduction The loss of mitochondrial function and content have been implicated in sarcopenia although they have been little studied in the very old, the group in which sarcopenia is most common. In this pilot study, our aim was to determine if mitochondrial respiratory chain function and content are preserved among healthy 85-year-olds. Methods We recruited 19 participants (11 female) through their general practitioner and assessed their medical history, functional status and self-reported physical activity. We identified sarcopenia using grip strength, Timed Up-and-Go and bioimpedance analysis. We assessed mitochondrial respiratory chain function using phosphorous magnetic resonance spectroscopy, estimating τ1/2 PCr, the recovery half-time of phosphocreatine in the calf muscles following a bout of aerobic exercise. We performed a biopsy of the vastus lateralis muscle and assessed mitochondrial respiratory chain content by measuring levels of subunits of complex I and IV of the respiratory chain, expressed as Z-scores relative to that in young controls. Results Participants had a median (IQR) of 2 (1,3) long-term conditions, reported regular aerobic physical activity, and one participant (5.3%) had sarcopenia. Sixteen participants completed the magnetic resonance protocol and the mean (SD) τ1/2 PCr of 35.6 (11.3) seconds was in keeping with preserved mitochondrial function. Seven participants underwent muscle biopsy and the mean fibre Z-scores were −0.7 (0.7) and −0.2 (0.4) for complexes I and IV, respectively, suggesting preserved content of mitochondrial respiratory chain enzymes. Conclusion Muscle mitochondrial respiratory chain function and content are preserved in a sample of active, well-functioning 85-year-olds, among whom sarcopenia was uncommon. The results from this study will help inform future work examining the association between muscle mitochondrial deficiency and sarcopenia.
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Affiliation(s)
- R M Dodds
- AGE Research Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Academic Geriatric Medicine, Faculty of Medicine, University of Southampton, Southampton, UK.
| | - K Davies
- AGE Research Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
| | - A Granic
- AGE Research Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
| | - K G Hollingsworth
- Newcastle Magnetic Resonance Centre, Institute of Cellular Medicine, Newcastle University, Newcastle-upon-Tyne, UK
| | - C Warren
- Newcastle University Centre for Ageing and Vitality, Newcastle upon Tyne, UK; Wellcome Trust Centre for Mitochondrial Research, Newcastle upon Tyne, UK
| | - G Gorman
- Newcastle University Centre for Ageing and Vitality, Newcastle upon Tyne, UK; Wellcome Trust Centre for Mitochondrial Research, Newcastle upon Tyne, UK
| | - D M Turnbull
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Newcastle University Centre for Ageing and Vitality, Newcastle upon Tyne, UK; Wellcome Trust Centre for Mitochondrial Research, Newcastle upon Tyne, UK
| | - A A Sayer
- AGE Research Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK; NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Academic Geriatric Medicine, Faculty of Medicine, University of Southampton, Southampton, UK; Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
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19
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Hirschfield GM, Dyson JK, Alexander GJM, Chapman MH, Collier J, Hübscher S, Patanwala I, Pereira SP, Thain C, Thorburn D, Tiniakos D, Walmsley M, Webster G, Jones DEJ. The British Society of Gastroenterology/UK-PBC primary biliary cholangitis treatment and management guidelines. Gut 2018; 67:1568-1594. [PMID: 29593060 PMCID: PMC6109281 DOI: 10.1136/gutjnl-2017-315259] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 12/12/2022]
Abstract
Primary biliary cholangitis (formerly known as primary biliary cirrhosis, PBC) is an autoimmune liver disease in which a cycle of immune mediated biliary epithelial cell injury, cholestasis and progressive fibrosis can culminate over time in an end-stage biliary cirrhosis. Both genetic and environmental influences are presumed relevant to disease initiation. PBC is most prevalent in women and those over the age of 50, but a spectrum of disease is recognised in adult patients globally; male sex, younger age at onset (<45) and advanced disease at presentation are baseline predictors of poorer outcome. As the disease is increasingly diagnosed through the combination of cholestatic serum liver tests and the presence of antimitochondrial antibodies, most presenting patients are not cirrhotic and the term cholangitis is more accurate. Disease course is frequently accompanied by symptoms that can be burdensome for patients, and management of patients with PBC must address, in a life-long manner, both disease progression and symptom burden. Licensed therapies include ursodeoxycholic acid (UDCA) and obeticholic acid (OCA), alongside experimental new and re-purposed agents. Disease management focuses on initiation of UDCA for all patients and risk stratification based on baseline and on-treatment factors, including in particular the response to treatment. Those intolerant of treatment with UDCA or those with high-risk disease as evidenced by UDCA treatment failure (frequently reflected in trial and clinical practice as an alkaline phosphatase >1.67 × upper limit of normal and/or elevated bilirubin) should be considered for second-line therapy, of which OCA is the only currently licensed National Institute for Health and Care Excellence recommended agent. Follow-up of patients is life-long and must address treatment of the disease and management of associated symptoms.
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Affiliation(s)
- Gideon M Hirschfield
- NIHR Birmingham Biomedical Research Centre, Birmingham, UK
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
- Centre for Liver Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Jessica K Dyson
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle, United Kingdom
| | - Graeme J M Alexander
- Sheila Sherlock Liver Centre, Royal Free London NHS Foundation Trust, London, UK
- UCL Institute for Liver and Digestive Health, Division of Medicine, University College London, London, UK
| | - Michael H Chapman
- Department of Gastroenterology, University College London Hospitals NHS Foundation Trust, London, UK
| | - Jane Collier
- Translational Gastroenterology Unit, Oxford University Hospitals, University of Oxford, Oxford, UK
| | - Stefan Hübscher
- Centre for Liver Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- Department of Cellular Pathology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Imran Patanwala
- Department of Gastroenterology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
- University of Liverpool, Liverpool, UK
| | - Stephen P Pereira
- Sheila Sherlock Liver Centre, Royal Free London NHS Foundation Trust, London, UK
- UCL Institute for Liver and Digestive Health, Division of Medicine, University College London, London, UK
- Department of Gastroenterology, University College London Hospitals NHS Foundation Trust, London, UK
| | | | - Douglas Thorburn
- Sheila Sherlock Liver Centre, Royal Free London NHS Foundation Trust, London, UK
- UCL Institute for Liver and Digestive Health, Division of Medicine, University College London, London, UK
| | - Dina Tiniakos
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | | | - George Webster
- Department of Gastroenterology, University College London Hospitals NHS Foundation Trust, London, UK
| | - David E J Jones
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle, United Kingdom
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20
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Khanna A, Leighton J, Lee Wong L, Jones DE. Symptoms of PBC - Pathophysiology and management. Best Pract Res Clin Gastroenterol 2018; 34-35:41-47. [PMID: 30343709 DOI: 10.1016/j.bpg.2018.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 06/08/2018] [Indexed: 01/31/2023]
Abstract
Primary biliary cholangitis is a chronic cholestatic liver disease characterised by progressive bile duct damage and, ultimately, biliary cirrhosis. Though up to fifty percent of the patients can be asymptomatic at presentation, symptoms when present are frequently debilitating with significant impact on quality of life and functional status. Characteristic symptoms include pruritus, fatigue and an increasingly recognised mild cognitive impairment. With the exception of pruritus, the "classic" cholestatic symptom, therapeutic options to treat PBC related symptoms are currently limited leaving patients with often significant residual problems. Symptoms can frequently contribute to depression and social isolation further compounding the quality of life impairment. There is need to better understand the current therapeutic options available in order to optimise their use, and to explore newer avenues to understand the pathophysiology of the symptom-generating processed in PBC in order to develop new therapies.
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Affiliation(s)
- Amardeep Khanna
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK; NIHR Biomedical Research Centre, Newcastle University, Newcastle upon Tyne, UK.
| | - Jess Leighton
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
| | - Lin Lee Wong
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK; NIHR Biomedical Research Centre, Newcastle University, Newcastle upon Tyne, UK.
| | - David E Jones
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK; NIHR Biomedical Research Centre, Newcastle University, Newcastle upon Tyne, UK.
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21
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Sithamparanathan S, Rocha MC, Parikh JD, Rygiel KA, Falkous G, Grady JP, Hollingsworth KG, Trenell MI, Taylor RW, Turnbull DM, Gorman GS, Corris PA. Skeletal muscle mitochondrial oxidative phosphorylation function in idiopathic pulmonary arterial hypertension: in vivo and in vitro study. Pulm Circ 2018; 8:2045894018768290. [PMID: 29799315 PMCID: PMC5971390 DOI: 10.1177/2045894018768290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Mitochondrial dysfunction within the pulmonary vessels has been shown to contribute to the pathology of idiopathic pulmonary arterial hypertension (IPAH). We investigated the hypothesis of whether impaired exercise capacity observed in IPAH patients is in part due to primary mitochondrial oxidative phosphorylation (OXPHOS) dysfunction in skeletal muscle. This could lead to potentially new avenues of treatment beyond targeting the pulmonary vessels. Nine clinically stable participants with IPAH underwent cardiopulmonary exercise testing, in vivo and in vitro assessment of mitochondrial function by 31P-magnetic resonance spectroscopy (31P-MRS) and laboratory muscle biopsy analysis. 31P-MRS showed abnormal skeletal muscle bioenergetics with prolonged recovery times of phosphocreatine and abnormal muscle pH handling. Histochemistry and quadruple immunofluorescence performed on muscle biopsies showed normal function and subunit protein abundance of the complexes within the OXPHOS system. Our findings suggest that there is no primary mitochondrial OXPHOS dysfunction but raises the possibility of impaired oxygen delivery to the mitochondria affecting skeletal muscle bioenergetics during exercise.
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Affiliation(s)
- Sasiharan Sithamparanathan
- 1 Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.,2 National Pulmonary Hypertension Service (Newcastle), The Newcastle-upon-Tyne NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Mariana C Rocha
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Jehill D Parikh
- 1 Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Karolina A Rygiel
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin Falkous
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - John P Grady
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | | | - Michael I Trenell
- 1 Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Robert W Taylor
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Doug M Turnbull
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Gráinne S Gorman
- 3 Wellcome Trust Centre for Mitochondrial Research, Institute for Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Paul A Corris
- 1 Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.,2 National Pulmonary Hypertension Service (Newcastle), The Newcastle-upon-Tyne NHS Foundation Trust, Newcastle upon Tyne, UK
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22
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Khanna A, Jones DE. Novel strategies and therapeutic options for the management of primary biliary cholangitis. Therap Adv Gastroenterol 2017; 10:791-803. [PMID: 29051789 PMCID: PMC5638183 DOI: 10.1177/1756283x17728669] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/25/2017] [Indexed: 02/04/2023] Open
Abstract
Primary biliary cholangitis (PBC) is a chronic autoimmune liver disease. It has a varied course of progression ranging from being completely asymptomatic to aggressive disease leading to cirrhosis and resulting in liver transplantation. In addition, symptoms can be debilitating and can have a major impact on quality of life. For decades, there was only one anti-cholestatic agent available to target this disease and that was only effective in around half of patients, with little or no effect on symptoms. With increasing understanding of the pathogenic mechanisms of PBC and potential targets for drug treatment, pharmaceutical companies have shown a greater interest in this rare disease. A large number of novel therapeutic molecules have been developed and are currently being evaluated. In this review article all the novel molecules in use and in trials targeting cholestasis and symptoms in PBC are discussed.
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Affiliation(s)
| | - David E. Jones
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
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23
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EASL Clinical Practice Guidelines: The diagnosis and management of patients with primary biliary cholangitis. J Hepatol 2017; 67:145-172. [PMID: 28427765 DOI: 10.1016/j.jhep.2017.03.022] [Citation(s) in RCA: 752] [Impact Index Per Article: 107.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 03/23/2017] [Indexed: 02/07/2023]
Abstract
Primary biliary cholangitis (PBC) is a chronic inflammatory autoimmune cholestatic liver disease, which when untreated will culminate in end-stage biliary cirrhosis. Diagnosis is usually based on the presence of serum liver tests indicative of a cholestatic hepatitis in association with circulating antimitochondrial antibodies. Patient presentation and course can be diverse and risk stratification is important to ensure all patients receive a personalised approach to their care. The goals of treatment and management are the prevention of end-stage liver disease, and the amelioration of associated symptoms. Pharmacologic approaches in practice, to reduce the impact of the progressive nature of disease, currently include licensed therapies (ursodeoxycholic acid and obeticholic acid) and off-label therapies (fibric acid derivatives, budesonide). These clinical practice guidelines summarise the evidence for the importance of a structured, life-long and individualised, approach to the care of patients with PBC, providing a framework to help clinicians diagnose and effectively manage patients.
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24
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Aamann L, Dam G, Rinnov A, Vilstrup H, Gluud LL. Physical exercise for people with cirrhosis. Hippokratia 2017. [DOI: 10.1002/14651858.cd012678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Luise Aamann
- Aarhus University Hospital; Department of Hepatology and Gastroenterology; 44 Noerrebrogade, Aarhus C Denmark
| | - Gitte Dam
- Aarhus University Hospital; Department of Hepatology and Gastroenterology; 44 Noerrebrogade, Aarhus C Denmark
| | - Anders Rinnov
- Rigshospitalet, Copenhagen University Hospital; Centre for Physical Activity Research; Blegdamsvej 9 Copenhagen Denmark
| | - Hendrik Vilstrup
- Aarhus University Hospital; Department of Hepatology and Gastroenterology; 44 Noerrebrogade, Aarhus C Denmark
| | - Lise Lotte Gluud
- Copenhagen University Hospital Hvidovre; Gastrounit, Medical Division; Kettegaards Alle Hvidovre Denmark 2650
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25
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A Randomized, Placebo-Controlled Clinical Trial of Efficacy and Safety: Modafinil in the Treatment of Fatigue in Patients With Primary Biliary Cirrhosis. Am J Ther 2017; 24:e167-e176. [PMID: 27148676 DOI: 10.1097/mjt.0000000000000387] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Fatigue is a common symptom of primary biliary cirrhosis (PBC), and is associated with an impaired quality of life. STUDY QUESTION No studies have assessed the use of modafinil in fatigue related to PBC in a controlled manner. STUDY DESIGN, MEASURES, AND OUTCOMES A randomized, double-blind, placebo-controlled study was conducted to determine the safety and efficacy of modafinil for the treatment of fatigue in PBC. Forty patients were randomized to modafinil (n = 20) or placebo (n = 20) for 12 weeks. A verbal report of fatigue for at least 6 months was required for enrollment. Modafinil was administered at 100 mg by mouth once daily; a change by 50 mg every 2 weeks (maximum: 200 mg once daily) was allowed, depending on the subject's response to treatment. The primary outcome was defined as a ≥50% improvement in fatigue severity [quantified by the Fisk Fatigue Impact Scale (FFIS)] after 12 weeks of treatment, compared with baseline values. RESULTS Thirty-three PBC patients completed the study. After 12 weeks of therapy, only 5 patients had a ≥50% reduction in FFIS scores: 3 patients (17.6%) in the modafinil arm and 2 (12.5%) in the placebo arm (P = 1.00). Change in median FFIS score was not statistically different between patients in the 2 treatment groups (P = 0.36). Modafinil was associated with minimal adverse events (headaches, diarrhea, and rash). CONCLUSIONS In patients with PBC who have fatigue, treatment with modafinil for 12 weeks was safe and fairly well tolerated; however, it did not result in beneficial effects on fatigue compared with patients treated with placebo (CONSORT Table 1). ClinicalTrials.gov identifier NCT00943176.
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26
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Abstract
Health-related quality of life (HRQOL) has become an important outcome for patients with liver cirrhosis as the number of transplantation candidates increases by the progression of treatment strategies. Falls and fall-related injuries are common in patients with liver cirrhosis and negatively affect HRQOL. Many factors increase the risk for falls such as minimal hepatic encephalopathy, psychoactive drugs, muscle strength, autonomic dysfunction, hyponatremia, and sleep problems. It is important to understand the underlying mechanisms for falls in cirrhotic patients to prevent severe injuries such as fractures, decrease healthcare costs, and improve HRQOL. Healthcare professionals, including physiotherapists and nurses, should be aware of the higher risk for falls in this population and therapeutic interventions must be designed for patients, especially those waiting on the transplant list.
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Abstract
There is significant unmet need in Primary Biliary Cholangitis (PBC) in patients under-responsive to the only approved therapy Ursodeoxycholic Acid (UDCA) who are at increased risk of progressing to end-stage liver disease. Obeticholic Acid (OCA) is a farnesoid X receptor (FXR) agonist which has been evaluated as a second line therapy in PBC and has recently been licenced by the FDA. Areas covered: The pharmacology and biology of OCA as an FXR agonist and its clinical benefits. A systematic review was undertaken of published literature, meeting abstracts and trial registries using the search terms FXR, FGF-19 (& FGF-15), Obeticholic Acid and INT-747. Expert commentary: OCA reduces exposure to toxic hydrophobic bile acids through reduction in bile acid synthesis (by direct and indirect (via enterocyte-released FGF19) actions on Cyp7A1-mediated bile acid synthesis) and bile acid excretion by hepatocytes. It significantly improves liver biochemical parameters strongly associated with risk of disease progression in UDCA under-responsive patients and the key side-effect of pruritus can be reduced by optimised dosing. OCA will be the first stratified therapy introduced in PBC, however confirmatory trial and real life data are needed to confirm that suggestive biochemical improvements are matched by improvement in key clinical outcomes.
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Affiliation(s)
- David E J Jones
- a Institute of Cellular Medicine , Newcastle University , Newcastle upon Tyne , UK
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Jopson L, Dyson JK, Jones DEJ. Understanding and Treating Fatigue in Primary Biliary Cirrhosis and Primary Sclerosing Cholangitis. Clin Liver Dis 2016; 20:131-42. [PMID: 26593295 DOI: 10.1016/j.cld.2015.08.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Fatigue is a significant problem for patients with primary biliary cirrhosis and although experienced less by patients with primary sclerosing cholangitis, a minority still report significant fatigue. Fatigue is the symptom with the greatest impact on quality of life, particularly when associated with social dysfunction. The pathogenesis of fatigue in cholestatic liver disease is complex, poorly understood, and probably has central and peripheral components. Managing fatigue in cholestatic liver disease presents a challenge for clinicians given the complexity and its numerous associations. This article presents a structured approach to managing fatigue in cholestatic liver disease to improve fatigue severity and quality of life.
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Affiliation(s)
- Laura Jopson
- Institute of Cellular Medicine, Newcastle University, Level 3 William Leech Building, Medical School, Framlington Place, Newcastle upon Tyne NE24HH, UK
| | - Jessica K Dyson
- Institute of Cellular Medicine, Newcastle University, Level 3 William Leech Building, Medical School, Framlington Place, Newcastle upon Tyne NE24HH, UK
| | - David E J Jones
- Institute of Cellular Medicine, Newcastle University, Level 3 William Leech Building, Medical School, Framlington Place, Newcastle upon Tyne NE24HH, UK.
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McDaniel J, Davuluri G, Hill EA, Moyer M, Runkana A, Prayson R, van Lunteren E, Dasarathy S. Hyperammonemia results in reduced muscle function independent of muscle mass. Am J Physiol Gastrointest Liver Physiol 2016; 310:G163-70. [PMID: 26635319 PMCID: PMC4971815 DOI: 10.1152/ajpgi.00322.2015] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/14/2015] [Indexed: 01/31/2023]
Abstract
The mechanism of the nearly universal decreased muscle strength in cirrhosis is not known. We evaluated whether hyperammonemia in cirrhosis causes contractile dysfunction independent of reduced skeletal muscle mass. Maximum grip strength and muscle fatigue response were determined in cirrhotic patients and controls. Blood and muscle ammonia concentrations and grip strength normalized to lean body mass were measured in the portacaval anastomosis (PCA) and sham-operated pair-fed control rats (n = 5 each). Ex vivo contractile studies in the soleus muscle from a separate group of Sprague-Dawley rats (n = 7) were performed. Skeletal muscle force of contraction, rate of force development, and rate of relaxation were measured. Muscles were also subjected to a series of pulse trains at a range of stimulation frequencies from 20 to 110 Hz. Cirrhotic patients had lower maximum grip strength and greater muscle fatigue than control subjects. PCA rats had a 52.7 ± 13% lower normalized grip strength compared with control rats, and grip strength correlated with the blood and muscle ammonia concentrations (r(2) = 0.82). In ex vivo muscle preparations following a single pulse, the maximal force, rate of force development, and rate of relaxation were 12.1 ± 3.5 g vs. 6.2 ± 2.1 g; 398.2 ± 100.4 g/s vs. 163.8 ± 97.4 g/s; -101.2 ± 22.2 g/s vs. -33.6 ± 22.3 g/s in ammonia-treated compared with control muscle preparation, respectively (P < 0.001 for all comparisons). Tetanic force, rate of force development, and rate of relaxation were depressed across a range of stimulation from 20 to 110 Hz. These data provide the first direct evidence that hyperammonemia impairs skeletal muscle strength and increased muscle fatigue and identifies a potential therapeutic target in cirrhotic patients.
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Affiliation(s)
- John McDaniel
- 1Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, Ohio; ,2Department of Exercise Science, Kent State University Kent, Ohio;
| | | | | | - Michelle Moyer
- 1Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, Ohio;
| | - Ashok Runkana
- 3Department of Pathobiology, Cleveland Clinic, Cleveland, Ohio; ,4Department of Medicine, Cleveland Clinic, Cleveland, Ohio;
| | - Richard Prayson
- 5Department of Pathology, Cleveland Clinic, Cleveland, Ohio;
| | - Erik van Lunteren
- 1Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, Ohio; ,6Case Western Reserve University Cleveland, Ohio
| | - Srinivasan Dasarathy
- Department of Pathobiology, Cleveland Clinic, Cleveland, Ohio; Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, Ohio; and
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Abstract
Primary biliary cirrhosis is a chronic cholestatic liver disease characterised by destruction of small intrahepatic bile ducts, leading to fibrosis and potential cirrhosis through resulting complications. The serological hallmark of primary biliary cirrhosis is the antimitochondrial antibody, a highly disease-specific antibody identified in about 95% of patients with primary biliary cirrhosis. These patients usually have fatigue and pruritus, both of which occur independently of disease severity. The typical course of primary biliary cirrhosis has changed substantially with the introduöction of ursodeoxycholic acid (UDCA). Several randomised placebo-controlled studies have shown that UDCA improves transplant-free survival in primary biliary cirrhosis. However, about 40% of patients do not have a biochemical response to UDCA and would benefit from new therapies. Liver transplantation is a life-saving surgery with excellent outcomes for those with decompensated cirrhosis. Meanwhile, research on nuclear receptor hormones has led to the development of exciting new potential treatments. This Seminar will review the current understanding of the epidemiology, pathogenesis, and natural history of primary biliary cirrhosis, discuss management of the disease and its sequelae, and introduce research on new therapeutic options.
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Affiliation(s)
- Elizabeth J Carey
- Division of Gastroenterology and Hepatology, Mayo Clinic, Phoenix, AZ, USA
| | - Ahmad H Ali
- Division of Gastroenterology and Hepatology, Mayo Clinic, Phoenix, AZ, USA
| | - Keith D Lindor
- Division of Gastroenterology and Hepatology, Mayo Clinic, Phoenix, AZ, USA; Arizona State University, College of Health Solutions, Phoenix, AZ, USA.
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Jopson L, Newton JL, Palmer J, Floudas A, Isaacs J, Qian J, Wilkinson J, Trenell M, Blamire A, Howel D, Jones DE. RITPBC: B-cell depleting therapy (rituximab) as a treatment for fatigue in primary biliary cirrhosis: study protocol for a randomised controlled trial. BMJ Open 2015; 5:e007985. [PMID: 26297361 PMCID: PMC4550715 DOI: 10.1136/bmjopen-2015-007985] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Primary biliary cirrhosis (PBC) is an autoimmune liver disease with approximately 50% of patients experiencing fatigue. This can be a particularly debilitating symptom, affecting quality of life and resulting in social isolation. Fatigue is highlighted by patients as a priority for research and patient support groups were involved in designing this trial. This is the first randomised controlled trial to investigate a treatment for fatigue in PBC. The trial protocol is innovative as it utilises novel magnetic resonance spectroscopy (MRS) techniques as an outcome measure. The protocol will be valuable to research groups planning clinical trials targeting fatigue in PBC and also transferrable to other conditions associated with fatigue. METHODS AND ANALYSIS RITPBC is a Medical Research Council (MRC) and National Institute for Health Research (NIHR) Efficacy and Mechanism Evaluation Programme (EME)-funded project. It is a phase II, single-centre, randomised controlled, double-blinded trial comparing rituximab with placebo in fatigued PBC patients. 78 patients with PBC and moderate to severe fatigue will be randomised to receive two infusions of rituximab or placebo. The study aims to assess whether rituximab improves fatigue in patients with PBC, the safety, and tolerability of rituximab in PBC and the sustainability of any beneficial actions. The primary outcome will be an improvement in fatigue domain score of the PBC-40, a disease-specific quality of life measure, evaluated at 12-week assessment. Secondary outcome measures include novel MRS techniques assessing muscle bioenergetic function, physical activity, anaerobic threshold and symptom, and quality of life measures. The trial started recruiting in October 2012 and recruitment is ongoing. ETHICS AND DISSEMINATION The trial has ethical approval from the NRES Committee North East, has Clinical Trial Authorisation from MHRA and local R&D approval. Trial results will be communicated to participants, presented at national and international meetings and published in peer-reviewed journals. TRIAL REGISTRATION NUMBER ISRCTN03978701.
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Affiliation(s)
- Laura Jopson
- Institute of Cellular Medicine, Medical School, Newcastle upon Tyne, UK
| | - Julia L Newton
- Institute of Health and Ageing, Medical School, Newcastle upon Tyne, UK
| | - Jeremy Palmer
- Institute of Cellular Medicine, Medical School, Newcastle upon Tyne, UK
| | - Achilleas Floudas
- Institute of Cellular Medicine, Medical School, Newcastle upon Tyne, UK
| | - John Isaacs
- Institute of Cellular Medicine, Medical School, Newcastle upon Tyne, UK
| | - Jessica Qian
- Newcastle Clinical Trials Unit, Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Jennifer Wilkinson
- Newcastle Clinical Trials Unit, Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Mike Trenell
- Movelab @ Newcastle University, Medical School, Newcastle upon Tyne, UK
| | - Andrew Blamire
- Institute of Cellular Medicine, Newcastle Magnetic Resonance Centre, Newcastle University, Newcastle upon Tyne, UK
| | - Denise Howel
- Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - David E Jones
- Institute of Cellular Medicine, Medical School, Newcastle upon Tyne, UK
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Purohit T, Cappell MS. Primary biliary cirrhosis: Pathophysiology, clinical presentation and therapy. World J Hepatol 2015; 7:926-941. [PMID: 25954476 PMCID: PMC4419097 DOI: 10.4254/wjh.v7.i7.926] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 01/15/2015] [Accepted: 03/09/2015] [Indexed: 02/06/2023] Open
Abstract
Primary biliary cirrhosis (PBC) is an autoimmune, slowly progressive, cholestatic, liver disease characterized by a triad of chronic cholestasis, circulating anti-mitochondrial antibodies (AMA), and characteristic liver biopsy findings of nonsuppurative destructive cholangitis and interlobular bile duct destruction. About 10% of PBC patients, however, lack AMA. A variant, called PBC-autoimmune hepatitis (AIH) overlap, is characterized by the above findings of PBC together with findings of elevated serum alanine aminotransferase, elevated serum immunoglobulin G, and circulating anti-smooth muscle antibodies, with liver biopsy demonstrating periportal or periseptal, lymphocytic, piecemeal necrosis. PBC is hypothesized to be related to environmental exposure in genetically vulnerable individuals. It typically occurs in middle-aged females. Prominent clinical features include fatigue, pruritis, jaundice, xanthomas, osteoporosis, and dyslipidemia. The Mayo Risk score is the most widely used and best prognostic system. Ursodeoxycholic acid is the primary therapy. It works partly by reducing the concentration and injury from relatively toxic bile acids. PBC-AIH overlap syndrome is treated with ursodeoxycholic acid and corticosteroids, especially budesonide. Obeticholic acid and fibrate are promising new, but incompletely tested, therapies. Liver transplantation is the definitive therapy for advanced disease, with about 70% 10-year survival after transplantation. Management of pruritis includes local skin care, dermatologist referral, avoiding potential pruritogens, cholestyramine, and possibly opioid antagonists, sertraline, or rifaximin. Management of osteoporosis includes life-style modifications, administration of calcium and vitamin D, and alendronate. Statins are relatively safe to treat the osteopenia associated with PBC. Associated Sjogren’s syndrome is treated by artificial tears, cyclosporine ophthalmic emulsion to stimulate tear production; and saliva substitutes, cholinergic agents, and scrupulous oral and dental care. Complications of cirrhosis from advanced PBC include esophageal varices, ascites, spontaneous bacterial peritonitis, hepatorenal syndrome, and hepatoma formation.
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Dyson JK, Elsharkawy AM, Lamb CA, Al‐Rifai A, Newton JL, Jones DE, Hudson M. Fatigue in primary sclerosing cholangitis is associated with sympathetic over-activity and increased cardiac output. Liver Int 2015; 35:1633-41. [PMID: 25363895 PMCID: PMC4737110 DOI: 10.1111/liv.12709] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/23/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Patients with primary sclerosing cholangitis (PSC) frequently highlight the impact of fatigue on their life quality. The study aims were to evaluate fatigue and its associations in PSC and investigate whether overt autonomic dysfunction contributes to the expression of fatigue. METHODS All PSC patients under active follow-up at a regional liver centre were sent disease- and symptom-assessment tools. Three control groups were utilized; unselected community controls, patients with inflammatory bowel disease (IBD) without PSC, and cholestatic controls with primary biliary cirrhosis (PBC). A representative subgroup of PSC patients and normal controls underwent formal autonomic assessment. RESULTS Symptom-assessment tools were returned by 40 non-transplanted patients. PSC patients had significantly worse fatigue than population controls (P = 0.005). Fatigue was significant compared to population controls whether or not patients had accompanying IBD, although was more marked in those with both PSC and IBD. In patients with PSC and IBD, fatigue severity and autonomic symptoms were significantly increased in those with prior significant surgical intervention. Clinically significant autonomic dysfunction was seen in 22.5% of PSC patients, and of those, 78% had significant fatigue. Neurally mediated hypotension was found in 60% of PSC patients compared to 8% in the control group. The PSC group had increased sympathetic activity and reduced parasympathetic activity. CONCLUSION Fatigue is a significant problem in a minority of PSC patients and appears to be associated with autonomic dysfunction. Fatigued PSC patients should be screened for autonomic dysfunction and targeting such dysfunction represents a potential approach to treatment which warrants further exploration.
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Affiliation(s)
| | | | - Christopher A. Lamb
- The Liver UnitFreeman HospitalNewcastle Upon TyneUK
- Institute for Cellular MedicineNewcastle UniversityNewcastle upon TyneUK
| | | | - Julia L. Newton
- UK NIHR Biomedical Research Centre in AgeingNewcastle‐upon‐TyneUK
| | - David E. Jones
- The Liver UnitFreeman HospitalNewcastle Upon TyneUK
- Institute for Cellular MedicineNewcastle UniversityNewcastle upon TyneUK
- UK NIHR Biomedical Research Centre in AgeingNewcastle‐upon‐TyneUK
| | - Mark Hudson
- The Liver UnitFreeman HospitalNewcastle Upon TyneUK
- Institute for Cellular MedicineNewcastle UniversityNewcastle upon TyneUK
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Brown AE, Jones DE, Walker M, Newton JL. Abnormalities of AMPK activation and glucose uptake in cultured skeletal muscle cells from individuals with chronic fatigue syndrome. PLoS One 2015; 10:e0122982. [PMID: 25836975 PMCID: PMC4383615 DOI: 10.1371/journal.pone.0122982] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 02/26/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Post exertional muscle fatigue is a key feature in Chronic Fatigue Syndrome (CFS). Abnormalities of skeletal muscle function have been identified in some but not all patients with CFS. To try to limit potential confounders that might contribute to this clinical heterogeneity, we developed a novel in vitro system that allows comparison of AMP kinase (AMPK) activation and metabolic responses to exercise in cultured skeletal muscle cells from CFS patients and control subjects. METHODS Skeletal muscle cell cultures were established from 10 subjects with CFS and 7 age-matched controls, subjected to electrical pulse stimulation (EPS) for up to 24h and examined for changes associated with exercise. RESULTS In the basal state, CFS cultures showed increased myogenin expression but decreased IL6 secretion during differentiation compared with control cultures. Control cultures subjected to 16 h EPS showed a significant increase in both AMPK phosphorylation and glucose uptake compared with unstimulated cells. In contrast, CFS cultures showed no increase in AMPK phosphorylation or glucose uptake after 16 h EPS. However, glucose uptake remained responsive to insulin in the CFS cells pointing to an exercise-related defect. IL6 secretion in response to EPS was significantly reduced in CFS compared with control cultures at all time points measured. CONCLUSION EPS is an effective model for eliciting muscle contraction and the metabolic changes associated with exercise in cultured skeletal muscle cells. We found four main differences in cultured skeletal muscle cells from subjects with CFS; increased myogenin expression in the basal state, impaired activation of AMPK, impaired stimulation of glucose uptake and diminished release of IL6. The retention of these differences in cultured muscle cells from CFS subjects points to a genetic/epigenetic mechanism, and provides a system to identify novel therapeutic targets.
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Affiliation(s)
- Audrey E. Brown
- Institute of Cellular Medicine, William Leech Building, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - David E. Jones
- Institute of Cellular Medicine, William Leech Building, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
- Newcastle Hospitals, NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Mark Walker
- Institute of Cellular Medicine, William Leech Building, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
- Newcastle Hospitals, NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Julia L. Newton
- Newcastle Hospitals, NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
- Institute for Ageing and Health, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, United Kingdom
- * E-mail:
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Dyson JK, Hirschfield GM, Adams DH, Beuers U, Mann DA, Lindor KD, Jones DEJ. Novel therapeutic targets in primary biliary cirrhosis. Nat Rev Gastroenterol Hepatol 2015; 12:147-58. [PMID: 25645973 DOI: 10.1038/nrgastro.2015.12] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Primary biliary cirrhosis (PBC) is a chronic immune-mediated liver disease characterized by progressive cholestasis, biliary fibrosis and eventually cirrhosis. It results in characteristic symptoms with marked effects on life quality. The advent of large patient cohorts has challenged the view of PBC as a benign condition treated effectively by the single licensed therapy-ursodeoxycholic acid (UDCA). UDCA nonresponse or under-response has a major bearing on outcome, substantially increasing the likelihood that liver transplantation will be required or that patients will die of the disease. In patients with high-risk, treatment-unresponsive or highly symptomatic disease the need for new treatment approaches is clear. Evolution in our understanding of disease mechanisms is rapidly leading to the advent of new and re-purposed therapeutic agents targeting key processes. Notable opportunities are offered by targeting what could be considered as the 'upstream' immune response, 'midstream' biliary injury and 'downstream' fibrotic processes. Combination therapy targeting several pathways or the development of novel agents addressing multiple components of the disease pathway might be required. Ultimately, PBC therapeutics will require a stratified approach to be adopted in practice. This Review provides a current perspective on potential approaches to PBC treatment, and highlights the challenges faced in evaluating and implementing those treatments.
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Affiliation(s)
- Jessica K Dyson
- Institute of Cellular Medicine, 3rd Floor William Leech Building, Medical School, Framlington Place, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Gideon M Hirschfield
- Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Wolfson Drive, Birmingham B15 2TT, UK
| | - David H Adams
- Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Wolfson Drive, Birmingham B15 2TT, UK
| | - Ulrich Beuers
- Department of Gastroenterology &Hepatology, Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, G4-216, University of Amsterdam, PO Box 22600, NL-1100 DD, Amsterdam, Netherlands
| | - Derek A Mann
- Institute of Cellular Medicine, 3rd Floor William Leech Building, Medical School, Framlington Place, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Keith D Lindor
- College of Health Solutions, Arizona State University, 550 North 3rd Street, Phoenix, AZ 85004, USA
| | - David E J Jones
- Institute of Cellular Medicine, 3rd Floor William Leech Building, Medical School, Framlington Place, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
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Ali AH, Carey EJ, Lindor KD. Diagnosis and management of primary biliary cirrhosis. Expert Rev Clin Immunol 2014; 10:1667-78. [DOI: 10.1586/1744666x.2014.979792] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Abstract
Primary biliary cirrhosis (PBC) is an autoimmune cholestatic liver disease characterised by a breakdown of immune tolerance to mitochondrial and nuclear antigens, causing injury to the biliary epithelial cells (BEC) lining the small intrahepatic bile ducts. This leads to bile duct injury and the retention of hydrophobic bile acids which cause further BEC injury leading to a self-sustaining cycle of bile duct injury. Initially the BEC respond to injury via a homeostatic response including through proliferation. Ultimately they become senescent; an active process with accompanying release of inflammatory cytokines ('the senescent secretome') which contributes to the process of interface hepatitis which is a feature of high-risk and treatment-unresponsive disease. This model for pathogenesis of PBC has implications for potential therapy approaches in targeting both the 'upstream' immune injury and 'downstream' BEC response to the immune injury. Fatigue is the commonest reported symptom in PBC and has a negative impact on patients' perceived quality of life, often through social isolation. It is unrelated to the severity of liver disease and appears unresponsive to current therapies, including ursodeoxycholic acid and transplantation. Fatigue in PBC is complex, with numerous associated peripheral and CNS features. Initially, cholestasis causes degenerative CNS change affecting areas of the brain regulating autonomic dysfunction and sleep, and these changes lead directly to some manifestations of fatigue and the associated cognitive impairment. In addition to this, the anti-mitochondrial antibody has direct muscle level metabolic effects leading to over-utilisation of anaerobic metabolism. Autonomic dysfunction contributes to the impact of this metabolic change by limiting the capacity of the muscle to respond through increased proton/lactate efflux from cells and outflow from tissues. The model has a number of implications for potential therapy approaches.
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Affiliation(s)
- Laura Griffiths
- Institute of Cellular Medicine, Newcastle University and Liver Unit, Freeman Hospital, Newcastle upon Tyne, UK
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Abstract
Understanding the mutual relationship between the liver and the heart is important for both hepatologists and cardiologists. Hepato-cardiac diseases can be classified into heart diseases affecting the liver, liver diseases affecting the heart, and conditions affecting the heart and the liver at the same time. Differential diagnoses of liver injury are extremely important in a cardiologist’s clinical practice calling for collaboration between cardiologists and hepatologists due to the many other diseases that can affect the liver and mimic haemodynamic injury. Acute and chronic heart failure may lead to acute ischemic hepatitis or chronic congestive hepatopathy. Treatment in these cases should be directed to the primary heart disease. In patients with advanced liver disease, cirrhotic cardiomyopathy may develop including hemodynamic changes, diastolic and systolic dysfunctions, reduced cardiac performance and electrophysiological abnormalities. Cardiac evaluation is important for patients with liver diseases especially before and after liver transplantation. Liver transplantation may lead to the improvement of all cardiac changes and the reversal of cirrhotic cardiomyopathy. There are systemic diseases that may affect both the liver and the heart concomitantly including congenital, metabolic and inflammatory diseases as well as alcoholism. This review highlights these hepatocardiac diseases
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Payne BAI, Hollingsworth KG, Baxter J, Wilkins E, Lee V, Price DA, Trenell M, Chinnery PF. In vivo mitochondrial function in HIV-infected persons treated with contemporary anti-retroviral therapy: a magnetic resonance spectroscopy study. PLoS One 2014; 9:e84678. [PMID: 24409305 PMCID: PMC3883680 DOI: 10.1371/journal.pone.0084678] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 11/18/2013] [Indexed: 01/07/2023] Open
Abstract
Modern anti-retroviral therapy is highly effective at suppressing viral replication and restoring immune function in HIV-infected persons. However, such individuals show reduced physiological performance and increased frailty compared with age-matched uninfected persons. Contemporary anti-retroviral therapy is thought to be largely free from neuromuscular complications, whereas several anti-retroviral drugs previously in common usage have been associated with mitochondrial toxicity. It has recently been established that patients with prior exposure to such drugs exhibit irreversible cellular and molecular mitochondrial defects. However the functional significance of such damage remains unknown. Here we use phosphorus magnetic resonance spectroscopy (31P-MRS) to measure in vivo muscle mitochondrial oxidative function, in patients treated with contemporary anti-retroviral therapy, and compare with biopsy findings (cytochrome c oxidase (COX) histochemistry). We show that dynamic oxidative function (post-exertional ATP (adenosine triphosphate) resynthesis) was largely maintained in the face of mild to moderate COX defects (affecting up to ∼10% of fibers): τ½ ADP (half-life of adenosine diphosphate clearance), HIV-infected 22.1±9.9 s, HIV-uninfected 18.8±4.4 s, p = 0.09. In contrast, HIV-infected patients had a significant derangement of resting state ATP metabolism compared with controls: ADP/ATP ratio, HIV-infected 1.24±0.08×10−3, HIV-uninfected 1.16±0.05×10−3, p = 0.001. These observations are broadly reassuring in that they suggest that in vivo mitochondrial function in patients on contemporary anti-retroviral therapy is largely maintained at the whole organ level, despite histochemical (COX) defects within individual cells. Basal energy requirements may nevertheless be increased.
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Affiliation(s)
- Brendan A. I. Payne
- Institute of Genetic Medicine, Newcastle University, Newcastle-upon-Tyne, United Kingdom
- Department of Infection and Tropical Medicine, Royal Victoria Infirmary, Newcastle-upon-Tyne, United Kingdom
- * E-mail:
| | - Kieren G. Hollingsworth
- Newcastle Magnetic Resonance Centre, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Joanne Baxter
- Department of Infectious Diseases, North Manchester General Hospital, Manchester, United Kingdom
| | - Edmund Wilkins
- Department of Infectious Diseases, North Manchester General Hospital, Manchester, United Kingdom
| | - Vincent Lee
- Manchester Centre for Sexual Health, Manchester Royal Infirmary, Manchester, United Kingdom
| | - D. Ashley Price
- Department of Infection and Tropical Medicine, Royal Victoria Infirmary, Newcastle-upon-Tyne, United Kingdom
| | - Michael Trenell
- Institute of Cellular Medicine, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Patrick F. Chinnery
- Institute of Genetic Medicine, Newcastle University, Newcastle-upon-Tyne, United Kingdom
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Sinha A, Hollingsworth KG, Ball S, Cheetham T. Impaired quality of life in growth hormone-deficient adults is independent of the altered skeletal muscle oxidative metabolism found in conditions with peripheral fatigue. Clin Endocrinol (Oxf) 2014; 80:107-14. [PMID: 23711232 DOI: 10.1111/cen.12252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 05/07/2013] [Accepted: 05/23/2013] [Indexed: 11/29/2022]
Abstract
CONTEXT Growth hormone-deficient (GHD) adults often report impaired quality of life (QoL) - with fatigue, a key element. This deficit can improve following GH replacement. The basis of this response is unclear. Perturbations in skeletal muscle metabolism have been demonstrated in several conditions in which fatigue is a prominent symptom. We wished to define the role of skeletal muscle metabolism in the impaired QoL observed in patients with GHD. OBJECTIVE To compare in vivo skeletal muscle mitochondrial oxidative phosphorylation using phosphorus-31 magnetic resonance spectroscopy in matched untreated GHD adults, treated GHD adults and healthy volunteers. DESIGN Twenty-two untreated GHD adults, 23 treated GHD adults and 20 healthy volunteers were recruited at a regional centre. All patients underwent assessment of muscle mitochondrial function (τ₁/₂ PCr) and proton handling using spectroscopy. Fasting biochemical analyses and anthropometric measurement were obtained. All patients completed the QoL-AGHDA and physical activity assessment (IPAQ) questionnaires. RESULTS Untreated and treated GHD adults complained of significantly increased fatigue and an impaired QoL (P = 0·002) when compared to healthy controls. There was no difference in maximal mitochondrial function (P = 0·53) nor pH recovery (P = 0·38) of skeletal muscle between the three groups. Untreated GHD patients had significantly lower IGF-1 than both treated GHD and healthy volunteers (P < 0·001), but there was no association between τ₁/₂ PCr and serum IGF-1 (r = -0·13, P = 0·32). CONCLUSIONS The impaired QoL seen in GHD adults is not associated with the skeletal muscle spectroscopic 'footprint' of altered mitochondrial oxidative function, anaerobic glycolysis or proton clearance that are a feature of several conditions in which fatigue is a prominent feature. These data suggest that the pathophysiology of fatigue and impaired QoL in GHD may have a significant central rather than peripheral (skeletal muscle) component.
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Affiliation(s)
- Akash Sinha
- Department of Paediatric Endocrinology, Great North Children's Hospital, Newcastle-upon-Tyne, UK; Institute of Genetic Medicine, Newcastle University, Newcastle-upon-Tyne, UK
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The impact of liver transplantation on the phenotype of primary biliary cirrhosis patients in the UK-PBC cohort. J Hepatol 2013; 59:67-73. [PMID: 23466308 PMCID: PMC6976302 DOI: 10.1016/j.jhep.2013.02.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/24/2013] [Accepted: 02/25/2013] [Indexed: 01/16/2023]
Abstract
BACKGROUND & AIMS Liver transplantation improves survival in end-stage primary biliary cirrhosis (PBC), but the benefit for systemic symptoms including fatigue is less clear. The aim of this study was to utilise the comprehensive UK-PBC Research Cohort, including 380 post-transplant patients and 2300 non-transplanted patients, to answer key questions regarding transplantation for PBC. METHODS Cross-sectional study of post-transplant PBC patients and case-matched non-transplanted patients. Detailed clinical information was collected, together with patient systemic symptom impact data using validated assessment tools. RESULTS Over 25% of patients in the transplant cohort were grafted within 2 years of PBC diagnosis suggesting advanced disease at presentation. Transplanted patients were significantly younger at presentation than non-transplanted (mean 7 years) and >35% of all patients in the UK-PBC cohort who presented under 50 years had already undergone liver transplantation at the study censor point (>50% were treatment failures (post-transplant or unresponsive to UDCA)). Systemic symptom severity (fatigue and cognitive symptoms) was identical in female post-transplant patients and matched non-transplanted controls and unrelated to disease recurrence or immunosuppression type. In males, symptoms were worse in transplanted than in non-transplanted patients. CONCLUSIONS Age at presentation is a major risk factor for progression to transplant (as well as UDCA non-response) in PBC. Although both confirmatory longitudinal studies, and studies utilising objective as well as subjective measures of function, are needed if we are to address the question definitively, we found no evidence of improved systemic symptoms after liver transplantation in PBC and patients should be advised accordingly. Consideration needs to be given to enhancing rehabilitation approaches to improve function and life quality after liver transplant for PBC.
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Sinha A, Hollingsworth KG, Ball S, Cheetham T. Improving the vitamin D status of vitamin D deficient adults is associated with improved mitochondrial oxidative function in skeletal muscle. J Clin Endocrinol Metab 2013; 98:E509-13. [PMID: 23393184 DOI: 10.1210/jc.2012-3592] [Citation(s) in RCA: 161] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Suboptimal mitochondrial function has been implicated in several disorders in which fatigue is a prominent feature. Vitamin D deficiency is a well-recognized cause of fatigue and myopathy. The aim of this study was to examine the effects of cholecalciferol therapy on skeletal mitochondrial oxidative function in symptomatic, vitamin D-deficient individuals. DESIGN This longitudinal study assessed mitochondrial oxidative phosphorylation in the gastrosoleus compartment using phosphorus-31 magnetic resonance spectroscopy measurements of phosphocreatine recovery kinetics in 12 symptomatic, severely vitamin D-deficient subjects before and after treatment with cholecalciferol. All subjects had serum assays before and after cholecalciferol therapy to document serum 25-hydroxyvitamin D (25OHD) and bone profiles. Fifteen healthy controls also underwent (31)P-magnetic resonance spectroscopy and serum 25OHD assessment. RESULTS The phosphocreatine recovery half-time (τ1/2PCr) was significantly reduced after cholecalciferol therapy in the subjects indicating an improvement in maximal oxidative phosphorylation (34.44 ± 8.18 sec to 27.84 ± 9.54 sec, P < .001). This was associated with an improvement in mean serum 25OHD levels (8.8 ± 4.2 nmol/L to 113.8 ± 51.5 nmol/L, P < .001). There was no difference in phosphate metabolites at rest. A linear regression model showed that decreasing serum 25OHD levels was associated with increasing τ1/2PCr (r = -0.41, P = .009). All patients reported an improvement in fatigue after cholecalciferol therapy. CONCLUSIONS Cholecalciferol therapy augments muscle mitochondrial maximal oxidative phosphorylation after exercise in symptomatic, vitamin D-deficient individuals. This finding suggests that changes in mitochondrial oxidative phosphorylation in skeletal muscle could at least be partly responsible for the fatigue experienced by these patients. For the first time, we demonstrate a link between vitamin D and the mitochondria in human skeletal muscle.
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Affiliation(s)
- Akash Sinha
- Department of Paediatric Endocrinology , Great North Children's Hospital, Newcastle-upon-Tyne, United Kingdom
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Cerebral vascular control is associated with skeletal muscle pH in chronic fatigue syndrome patients both at rest and during dynamic stimulation. NEUROIMAGE-CLINICAL 2013; 2:168-73. [PMID: 24179772 PMCID: PMC3777833 DOI: 10.1016/j.nicl.2012.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 12/12/2012] [Accepted: 12/27/2012] [Indexed: 11/22/2022]
Abstract
Cerebral blood flow (CBF) is maintained despite changing systemic blood pressure through cerebral vascular control, with such tight regulation believed to be under local tissue control. Chronic fatigue syndrome (CFS) associates with a wide range of symptoms, including orthostatic intolerance, skeletal muscle pH abnormalities and cognitive impairment. CFS patients are known to have reduced CBF and orthostatic intolerance associates with abnormal vascular regulation, while skeletal muscle pH abnormalities associate with autonomic dysfunction. These findings point to autonomic dysfunction as the central feature of CFS, and cerebral vascular control being influenced by factors outside of the brain, a macroscopic force affecting the stability of regional regulation. We therefore explored whether there was a physiological link between cerebral vascular control and skeletal muscle pH management in CFS. Seventeen consecutive CFS patients fulfilling the Fukuda criteria were recruited from our local CFS clinical service. To probe the static scenario, CBF and skeletal muscle pH were measured at rest using MRI and (31)P magnetic resonance spectroscopy ((31)P-MRS). To examine dynamic control, brain functional MRI was performed concurrently with Valsalva manoeuvre (VM), a standard autonomic function challenge, while (31)P-MRS was performed during plantar flexion exercise. Significant inverse correlation was seen between CBF and skeletal muscle pH at rest (r = - 0.67, p < 0.01). Prolonged cerebral vascular constriction during the sympathetic phase of VM was associated with higher pH in skeletal muscle after plantar flexion exercise (r = 0.69, p < 0.008). In conclusion, cerebral vascular control is closely related to skeletal muscle pH both at rest and after dynamic stimulation in CFS.
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Falls and fall-related injury are common in older people with chronic liver disease. Dig Dis Sci 2012; 57:2697-702. [PMID: 22576710 DOI: 10.1007/s10620-012-2193-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 04/14/2012] [Indexed: 12/19/2022]
Abstract
BACKGROUND Improved survival with chronic liver disease (CLD) and increased incidence in the older has led to a rapidly expanding population which faces similar "geriatric syndromes" as the general population. With risk factors such as autonomic dysfunction, cognitive impairment, and muscle abnormalities in CLD it is expected that falls and injury will be common. AIM To determine prevalence of falls and injury in chronic liver disease and to identify potential modifiable fall associations. METHODS Falls prevalence was estimated by providing patients aged ≥ 65 years with CLD a falls data collection tool, via the post or in the clinic. A younger CLD cohort and age-matched and sex-matched community controls was used for comparison. A sub-group underwent multidisciplinary falls assessment to identify modifiable fall associations. RESULTS Falls were significantly more common in older people with CLD (47 % in previous year) than in controls; incidence of injury did not differ. Regression identified orthostatic symptoms, lower-limb strength, and fear of falling as being independently associated with falls in CLD. Those who had fallen had significantly greater difficulty with daily activities. CONCLUSION Falls are prevalent in older people with CLD, and are potentially preventable with multifactorial intervention. Services must prepare for expansion in the older CLD population; here we demonstrate how this expansion may affect falls services and provide a potential therapeutic target.
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Akamatsu N, Sugawara Y. Primary biliary cirrhosis and liver transplantation. Intractable Rare Dis Res 2012; 1:66-80. [PMID: 25343075 PMCID: PMC4204562 DOI: 10.5582/irdr.2012.v1.2.66] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 04/28/2012] [Accepted: 05/11/2012] [Indexed: 12/13/2022] Open
Abstract
Primary biliary cirrhosis (PBC) is an immune-mediated chronic progressive inflammatory liver disease, predominantly affecting middle-aged women, characterized by the presence of antimitochondrial antibodies (AMAs), which can lead to liver failure. Genetic contributions, environmental factors including chemical and infectious xenobiotics, autoimmunity and loss of tolerance have been aggressively investigated in the pathogenesis of PBC, however, the actual impact of these factors is still controversial. Survival of PBC patients has been largely improved with the widespread use of ursodeoxycholic acid (UDCA), however, one third of patients still do not respond to the treatment and proceed to liver cirrhosis, requiring liver transplantation as a last resort for cure. The outcome of liver transplantation is excellent with 5- and 10-year survival rates around 80% and 70%, respectively, while along with long survival, the recurrence of the disease has become an important outcome after liver transplantation. Prevalence rates of recurrent PBC rage widely between 1% and 35%, and seem to increase with longer follow-up. Center-specific issues, especially the use of protocol biopsy, affect the variety of incidence, yet, recurrence itself does not affect patient and graft survival at present, and retransplantation due to recurrent disease is extremely rare. With a longer follow-up, recurrent disease could have an impact on patient and graft survival.
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Affiliation(s)
- Nobuhisa Akamatsu
- Department of Hepato-biliary-pancreatic Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
- Artificial Organ and Transplantation Division, Department of Surgery, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| | - Yasuhiko Sugawara
- Artificial Organ and Transplantation Division, Department of Surgery, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
- Address correspondence to: Dr. Yasuhiko Sugawara, Artificial Organ and Transplantation Division, Department of Surgery, Graduate School of Medicine, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan. E-mail:
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Abstract
Improved medical management and the changing disease demographic mean that the majority of patients with chronic liver disease are living with the disease rather than dying from it. Historically, the perception has been that the impact of chronic liver disease is related entirely to the consequences of endstage liver disease; however, more recently a number of systemic symptoms have been recognised that can occur at any point in the natural history of chronic liver disease and which can be associated with functional impairment and reduced quality of life. The most characteristic of these systemic symptoms is fatigue, which frequently associates with sleep disturbance and autonomic dysfunction, particularly manifest as abnormality of blood pressure regulation. Cognitive symptoms can occur even in non-cirrhotic patients. Falls can present in patients with autonomic dysfunction, complicated by the presence of peripheral muscle strength problems. Importantly for clinicians managing chronic liver disease, the severity of these systemic symptoms is typically not related to liver disease severity, and therefore despite optimal liver disease management, patients can often continue to experience debilitating symptoms. The similarity in systemic symptoms between different chronic liver diseases (and indeed chronic inflammatory conditions affecting other organs) suggests the possibility of shared pathogenetic processes and raises the possibility of common management strategies, although further research is urgently needed to confirm this. In primary biliary cirrhosis, where our understanding of systemic symptoms is arguably most developed, structured management strategies have been shown to improve the quality of life of patients. It is highly likely that similar approaches will have comparable benefits for other chronic liver disease groups. Here, we review the current understanding of systemic symptoms in chronic liver disease and offer recommendations regarding the successful management of these symptoms. Critical for successful treatment is use of a structured and systematic approach to management in which all contributing factors are addressed in an organised fashion. We believe that such a systematic approach, when applied to research as well as to clinical management, will allow us to reduce the overall burden of chronic liver disease, improve quality of life and enhance functional ability.
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Affiliation(s)
- Julia L Newton
- UK NIHR Biomedical Research Centre in Ageing and Age Related Diseases, Newcastle University, Newcastle, UK.
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Primary biliary cirrhosis and Sjögren's syndrome: autoimmune epithelitis. J Autoimmun 2011; 39:34-42. [PMID: 22178199 DOI: 10.1016/j.jaut.2011.11.005] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Accepted: 11/12/2011] [Indexed: 02/08/2023]
Abstract
Primary biliary cirrhosis (PBC) has been often coined a model autoimmune disease based on the homogeneity amongst patients, the frequency and similarity of antimitochondrial antibodies, including the highly directed immune response to pyruvate dehydrogenase (PDC-E2). A significant number of patients with PBC suffer from sicca and amongst these, there are patients who also have classic Sjögren's syndrome. Indeed, both PBC and Sjögren's syndrome are characterized by inflammation of target epithelial elements. Both diseases can be considered on the basis of a number of other related clinical aspects, including proposed unique apoptotic features of the target tissue, the role of secretory IgA, and the frequency with which both diseases overlap with each other. Indeed, PBC may be considered a Sjögren's syndrome of the liver, whereas Sjögren's syndrome can be equally discussed as PBC of the salivary glands. Dissection of the genetic predispositions for both diseases and especially the molecular basis of effector mechanisms, will become critical elements in developing new therapies.
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Abstract
Primary biliary cirrhosis is a chronic liver disease characterised by intrahepatic bile-duct destruction, cholestasis, and, in some cases, cirrhosis. Evidence supporting the autoimmune nature of this disorder includes the appearance of highly specific antimitochondrial antibodies (AMAs) and autoreactive T cells. Concordance rates in monozygotic twins, familial prevalence, and genetic associations underscore the importance of genetic factors, whereas findings of epidemiological studies and murine models suggest a possible role for exogenous chemicals and infectious agents through molecular mimicry. The incidence of primary biliary cirrhosis has increased over recent decades, possibly attributable to augmented testing of liver biochemistry rather than a rise in disease incidence. AMAs remain the hallmark of diagnosis in most cases and allow detection of asymptomatic patients. Symptomatic individuals usually present with either pruritus or fatigue and, more rarely, with either jaundice or complications of cirrhosis. The prognosis of primary biliary cirrhosis has improved because of early diagnosis and use of ursodeoxycholic acid, the only established medical treatment for this disorder. Although not a cure, treatment can slow disease progression and delay the need for liver transplantation. However, some patients do not respond adequately to ursodeoxycholic acid and might need alternative therapeutic approaches.
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Affiliation(s)
- Carlo Selmi
- Department of Translational Medicine, IRCCS-Istituto Clinico Humanitas, University of Milan, Milan, Italy
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McDonald C, Newton J, Lai HM, Baker SN, Jones DE. Central nervous system dysfunction in primary biliary cirrhosis and its relationship to symptoms. J Hepatol 2010; 53:1095-100. [PMID: 20810186 DOI: 10.1016/j.jhep.2010.05.036] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Revised: 05/24/2010] [Accepted: 05/26/2010] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Primary biliary cirrhosis (PBC) is associated with fatigue, memory impairment, and sleep disturbances. These symptoms suggest the possibility of underlying central nervous system (CNS) dysfunction. During exercise, fatigue develops due to muscular processes (peripheral fatigue) and decreased neurological activation of the muscle (central fatigue). In this study we objectively quantify central and peripheral fatigue in PBC and investigate the integrity of cortical inhibitory and excitatory circuits. Finally, we determine the relationship of these indices to the symptoms of PBC. METHODS 16 early-stage PBC patients, 8 post-liver transplant PBC patients, and 12 age-matched controls were studied at the Specialist PBC clinic and neuroscience research unit. In these patients, twitch interpolation was used to measure peripheral and central fatigue. Paired-pulse trans-cranial magnetic stimulation was used to assess intra-cortical inhibition (ICI) and facilitation (ICF). RESULTS PBC patients had a significantly lower central activation before fatiguing exercise (mean 86.6.8% (±12.75) vs. 95.2% (±7.4); p<0.05) and a greater response variability than controls. The decline in central activation during exercise and peripheral fatigue were normal. ICI was significantly reduced in PBC patients and daytime somnolence was greater in patients where net inhibition exceeded facilitation. Transplanted and non-transplanted patients had similar central activation, ICI, and ICF. CONCLUSIONS PBC patients have impaired central activation and abnormal ICI, suggesting CNS abnormalities beyond voluntary control. Transplanted and non-transplanted patients show similar abnormalities raising interesting questions about the mechanisms underpinning these changes and the permanence of neurological dysfunction in PBC. ICI and ICF and the balance between them are related to daytime somnolence (an important symptom in PBC).
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Yu-Wai-Man P, Trenell MI, Hollingsworth KG, Griffiths PG, Chinnery PF. OPA1 mutations impair mitochondrial function in both pure and complicated dominant optic atrophy. Brain 2010; 134:e164. [PMID: 20952381 PMCID: PMC3069699 DOI: 10.1093/brain/awq288] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Patrick Yu-Wai-Man
- 1 Mitochondrial Research Group, Institute for Ageing and Health, The Medical School, Newcastle University, Newcastle upon Tyne, UK
- 2 Department of Ophthalmology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
- 3 Institute of Human Genetics, Newcastle University, Newcastle upon Tyne, UK
| | - Michael I. Trenell
- 4 Newcastle Magnetic Resonance Centre, Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK
| | - Kieren G. Hollingsworth
- 4 Newcastle Magnetic Resonance Centre, Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK
| | - Philip G. Griffiths
- 1 Mitochondrial Research Group, Institute for Ageing and Health, The Medical School, Newcastle University, Newcastle upon Tyne, UK
- 2 Department of Ophthalmology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Patrick F. Chinnery
- 1 Mitochondrial Research Group, Institute for Ageing and Health, The Medical School, Newcastle University, Newcastle upon Tyne, UK
- 3 Institute of Human Genetics, Newcastle University, Newcastle upon Tyne, UK
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