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Shiffman ML. Autoimmune Hepatitis: Epidemiology, Subtypes, and Presentation. Clin Liver Dis 2024; 28:1-14. [PMID: 37945151 DOI: 10.1016/j.cld.2023.06.002] [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
Autoimmune hepatitis (AIH) is a chronic immunologic disorder in which the immune system targets the liver. The disease has a genetic basis and this accounts for the epidemiologic variation observed in serologic testing and clinical presentation across different populations. The incidence of AIH increases with age into the 70s and seems to be increasing in prevalence. Most patients test positive for antinuclear antibody, ASMA, or anti-LKM but about 20% of patients do not have these serologic markers. At clinical presentation, patients may be asymptomatic, symptomatic, have acute liver failure, or decompensated cirrhosis.
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Affiliation(s)
- Mitchell L Shiffman
- Bon Secours Liver Institute of Richmond, Bon Secours Mercy Health, 5855 Bremo Road, Suite 509, Richmond, VA 23226, USA; Bon Secours Liver Institute of Hampton Roads, Bon Secours Mercy Health, 12720 Mc Manus Boulevard, Suite 313, Newport News, VA, 23602, USA.
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2
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Buechter M, Dorn D, Möhlendick B, Siffert W, Baba HA, Gerken G, Kahraman A. Characteristics and Long-Term Outcome of 535 Patients with Autoimmune Hepatitis-The 20-Year Experience of a High-Volume Tertiary Center. J Clin Med 2023; 12:4192. [PMID: 37445225 DOI: 10.3390/jcm12134192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 07/15/2023] Open
Abstract
Background and aims: Autoimmune hepatitis (AIH) is a complex and progressive inflammatory liver disease characterized by immune-mediated destruction of the liver parenchyma, hypergammaglobulinemia, the presence of circulating autoantibodies, and good response to immunosuppressive therapy. Since the prevalence of AIH is relatively rare, data on the clinical course and the long-term outcome are scarce. Patients and methods: We retrospectively analyzed the data of 535 well-documented AIH patients treated at the University Hospital Essen between 2000 and 2020. Results: The majority of patients were middle-aged females (75% women, mean age 45 years) with AIH type 1 (97%). Approximately 32% of patients were diagnosed with cirrhosis due to AIH, 29% had concomitant autoimmune (predominantly autoimmune thyroiditis), and 10% had psychiatric diseases, respectively. Skin tumors were the most common malignant diseases (47% of all tumors), while hepatocellular carcinoma rarely occurred (only six cases). Overall long-term mortality and liver-associated mortality were 9.16% and 4.67%, respectively. However, long-term survival was strongly associated with disease remission. Conclusions: Although AIH is a silent disease and cirrhosis is present in many cases, a favorable long-term prognosis can be achieved by consequent immunosuppressive therapy. The incidence of (liver-associated) complications seems to be lower in comparison to other etiologies, such as viral hepatitis or NASH, and mainly depends on the long-term side effects of immunosuppressive therapy.
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Affiliation(s)
- Matthias Buechter
- Department of Gastroenterology and Hepatology, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
- Department of Gastroenterology and Hepatology, Elisabeth Hospital, 58638 Iserlohn, Germany
| | - Dominik Dorn
- Department of Gastroenterology and Hepatology, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
| | - Birte Möhlendick
- Institute of Pharmacogenetics, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
| | - Winfried Siffert
- Institute of Pharmacogenetics, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
| | - Hideo A Baba
- Institute of Pathology, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
| | - Guido Gerken
- Department of Gastroenterology and Hepatology, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
- Department of Gastroenterology and Hepatology, Helios Clinic, 42549 Velbert, Germany
| | - Alisan Kahraman
- Department of Gastroenterology and Hepatology, University Clinic of Essen, University of Duisburg-Essen, 45122 Essen, Germany
- Department of Gastroenterology and Hepatology, Max Grundig Clinic, 77815 Bühl, Germany
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3
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Subramanian K, Paul S, Libby A, Patterson J, Arterbery A, Knight J, Castaldi C, Wang G, Avitzur Y, Martinez M, Lobritto S, Deng Y, Geliang G, Kroemer A, Fishbein T, Mason A, Dominguez-Villar M, Mariappan M, Ekong UD. HERV1-env Induces Unfolded Protein Response Activation in Autoimmune Liver Disease: A Potential Mechanism for Regulatory T Cell Dysfunction. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 210:732-744. [PMID: 36722941 PMCID: PMC10691554 DOI: 10.4049/jimmunol.2100186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 01/12/2023] [Indexed: 02/02/2023]
Abstract
Regulatory T cells (Tregs) are not terminally differentiated but can acquire effector properties. Here we report an increased expression of human endogenous retrovirus 1 (HERV1-env) proteins in Tregs of patients with de novo autoimmune hepatitis and autoimmune hepatitis, which induces endoplasmic reticulum (ER) stress. HERV1-env-triggered ER stress activates all three branches (IRE1, ATF6, and PERK) of the unfolded protein response (UPR). Our coimmunoprecipitation studies show an interaction between HERV1-env proteins and the ATF6 branch of the UPR. The activated form of ATF6α activates the expression of RORC and STAT3 by binding to promoter sequences and induces IL-17A production. Silencing of HERV1-env results in recovery of Treg suppressive function. These findings identify ER stress and UPR activation as key factors driving Treg plasticity (species: human).
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Affiliation(s)
- Kumar Subramanian
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, USA
| | - Saikat Paul
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, USA
| | - Andrew Libby
- Dept of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC
| | - Jordan Patterson
- Division of Gastroenterology, University of Alberta, Edmonton, AB, Canada
| | - Adam Arterbery
- Pediatric Gastroenterology and Hepatology, Yale University, New Haven, CT, USA
| | - James Knight
- Yale Center for Genome Analysis, Yale School of Medicine, New Haven, CT, USA
| | | | - Guilin Wang
- Yale Center for Genome Analysis, Yale School of Medicine, New Haven, CT, USA
| | - Yaron Avitzur
- Division of Gastroenterology, Hepatology, and Nutrition, Hospital for Sick Children, Toronto, ON, Canada
| | - Mercedes Martinez
- Pediatric Gastroenterology, Hepatology, and Nutrition, Columbia University, New York, NY, USA
| | - Steve Lobritto
- Pediatric Gastroenterology, Hepatology, and Nutrition, Columbia University, New York, NY, USA
| | - Yanhong Deng
- Yale Center for Analytical Sciences, New Haven, CT, USA
| | - Gan Geliang
- Yale Center for Analytical Sciences, New Haven, CT, USA
| | - Alexander Kroemer
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, USA
| | - Thomas Fishbein
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, USA
| | - Andrew Mason
- Division of Gastroenterology, University of Alberta, Edmonton, AB, Canada
| | | | | | - Udeme D. Ekong
- Pediatric Gastroenterology and Hepatology, Yale University, New Haven, CT, USA
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, USA
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4
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Adil N, Siddiqui AJ, Musharraf SG. Metabolomics‐based Researches in Autoimmune Liver Disease: A
Mini‐Review. Scand J Immunol 2022. [DOI: 10.1111/sji.13208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Nurmeen Adil
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
| | - Amna Jabbar Siddiqui
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
| | - Syed Ghulam Musharraf
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
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5
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Methyl butyrate attenuates concanavalin A-induced autoimmune hepatitis by inhibiting Th1-cell activation and homing to the liver. Cell Immunol 2022; 378:104575. [DOI: 10.1016/j.cellimm.2022.104575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/13/2022] [Accepted: 06/21/2022] [Indexed: 11/23/2022]
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6
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Rüther DF, Sebode M, Lohse AW, Wernicke S, Böttinger E, Casar C, Braun F, Schramm C. Mobile app requirements for patients with rare liver diseases: A single center survey for the ERN RARE-LIVER. Clin Res Hepatol Gastroenterol 2021; 45:101760. [PMID: 34325014 DOI: 10.1016/j.clinre.2021.101760] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/14/2021] [Accepted: 07/02/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND More patient data are needed to improve research on rare liver diseases. Mobile health apps enable an exhaustive data collection. Therefore, the European Reference Network on Hepatological diseases (ERN RARE-LIVER) intends to implement an app for patients with rare liver diseases communicating with a patient registry, but little is known about which features patients and their healthcare providers regard as being useful. AIMS This study aimed to investigate how an app for rare liver diseases would be accepted, and to find out which features are considered useful. METHODS An anonymous survey was conducted on adult patients with rare liver diseases at a single academic, tertiary care outpatient-service. Additionally, medical experts of the ERN working group on autoimmune hepatitis were invited to participate in an online survey. RESULTS In total, the responses from 100 patients with autoimmune (n = 90) or other rare (n = 10) liver diseases and 32 experts were analyzed. Patients were convinced to use a disease specific app (80%) and expected some benefit to their health (78%) but responses differed significantly between younger and older patients (93% vs. 62%, p < 0.001; 88% vs. 64%, p < 0.01). Comparing patients' and experts' feedback, patients more often expected a simplified healthcare pathway (e.g. 89% vs. 59% (p < 0.001) wanted access to one's own medical records), while healthcare providers saw the benefit mainly in improving compliance and treatment outcome (e.g. 93% vs. 31% (p < 0.001) and 70% vs. 21% (p < 0.001) expected the app to reduce mistakes in taking medication and improve quality of life, respectively). CONCLUSION Our results underline the great desire for disease-specific apps but also the need to involve patients and healthcare providers in the development of such apps in order to achieve long-term use and, thereby, improvements of patient care and research. The results of this study will help tremendously to implement the first cross-country app that communicates with an ERN patient registry.
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Affiliation(s)
- Darius F Rüther
- I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER); Digital Health Center, Hasso Plattner Institute, Potsdam, Germany.
| | - Marcial Sebode
- I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Ansgar W Lohse
- I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Sarah Wernicke
- Digital Health Center, Hasso Plattner Institute, Potsdam, Germany
| | - Erwin Böttinger
- Digital Health Center, Hasso Plattner Institute, Potsdam, Germany
| | - Christian Casar
- I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Felix Braun
- I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Christoph Schramm
- I. Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER); Martin Zeitz Center for Rare Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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7
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Ferre-Aracil C, Riveiro-Barciela M, Trapero-Marugán M, Rodríguez-Perálvarez M, Llovet LP, Téllez L, Sánchez-Torrijos Y, Díaz-Fontenla F, Salcedo-Plaza M, Álvarez-López P, de la Mata M, Londoño MC, Bañares-Cañizares R, Calleja JL. Tacrolimus as an Effective and Durable Second-Line Treatment for Chronic Autoimmune Hepatitis: A Multicentric Study. Dig Dis Sci 2021; 66:2826-2832. [PMID: 32860579 DOI: 10.1007/s10620-020-06569-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 08/19/2020] [Indexed: 12/09/2022]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a chronic liver disease able to progress to acute liver failure, cirrhosis, and liver cancer. A significant proportion of patients fail to first-line therapy or develop severe toxicity. AIMS To assess safety and effectiveness of tacrolimus as a second-line therapy in AIH patients. METHODS Multicentric retrospective study of AIH patients treated with tacrolimus for at least 3 months as a second-line therapy. Effectiveness was defined as complete normalization of transaminases and IgG. RESULTS A total of 23 AIH patients were included in the final analysis. In 13% of patients tacrolimus was initiated because of toxicity to previous first-line treatments and the rest were switched because of previous non-efficacy. Tacrolimus was effective in 18 patients (78%; 95%CI: 55.20-91.92%). The median time receiving tacrolimus was 16 months (IQR 20). There was a sustained response with a significant improvement in all liver enzymes and IgG on last follow-up. Only one patient discontinued tacrolimus at the third month because of severe neuropathy, and ototoxicity. Responders were significantly older at diagnosis of AIH (41 ± 13 vs. 27 ± 10 years old; p = 0.0496). CONCLUSION Tacrolimus is effective and well tolerated as a second-line therapy in patients with AIH.
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Affiliation(s)
- Carlos Ferre-Aracil
- Gastroenterology and Hepatology Unit, Hospital Universitario Puerta de Hierro Majadahonda, Joaquin Rodrigo 1, Majadahonda, 28888, Madrid, Spain.
| | - Mar Riveiro-Barciela
- Hepatology - Internal Medicine Unit, Hospital Universitario Vall d'Hebrón, Barcelona, Spain.,CIBERehd, Barcelona, Spain
| | - María Trapero-Marugán
- Gastroenterology and Hepatology Unit, Hospital Universitario Puerta de Hierro Majadahonda, Joaquin Rodrigo 1, Majadahonda, 28888, Madrid, Spain
| | - Manuel Rodríguez-Perálvarez
- Hepatology and Liver Transplantation Unit, Hospital Universitario Reina Sofía, IMBIC, CIBERehd, Córdoba, Spain
| | | | - Luis Téllez
- Gastroenterology and Hepatology Unit, Hospital Universitario Ramón y Cajal, IRYCIS, CIBERehd, Universidad de Alcalá, Madrid, Spain
| | | | - Fernando Díaz-Fontenla
- Gastroenterology and Hepatology Unit, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Magdalena Salcedo-Plaza
- Gastroenterology and Hepatology Unit, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Patricia Álvarez-López
- Hepatology - Internal Medicine Unit, Hospital Universitario Vall d'Hebrón, Barcelona, Spain
| | - Manuel de la Mata
- Hepatology and Liver Transplantation Unit, Hospital Universitario Reina Sofía, IMBIC, CIBERehd, Córdoba, Spain
| | | | | | - José Luis Calleja
- Gastroenterology and Hepatology Unit, Hospital Universitario Puerta de Hierro Majadahonda, Joaquin Rodrigo 1, Majadahonda, 28888, Madrid, Spain
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8
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Zecher BF, Buescher G, Willemse J, Walmsley M, Taylor A, Leburgue A, Schramm C, Lohse AW, Sebode M. Prevalence of COVID-19 in patients with autoimmune liver disease in Europe: A patient-oriented online survey. United European Gastroenterol J 2021; 9:797-808. [PMID: 34105883 PMCID: PMC8242670 DOI: 10.1002/ueg2.12100] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/29/2021] [Indexed: 02/06/2023] Open
Abstract
Background During the current SARS‐CoV‐2 pandemic it is important to identify risk factors for COVID‐19. Registry studies are providing growing evidence on the elevated risk of mortality from COVID‐19 in patients with chronic liver disease, especially in advanced stages. Results may, however, have a selection bias towards severe cases. Limited data is available on COVID‐19 in patients with autoimmune liver disease (AILD). Aim To perform an online survey to capture the prevalence of COVID‐19 and the state of medical care of patients with AILD in Europe during the pandemic. Methods Data was collected via an anonymous patient‐oriented, online survey, which was available on the EUSurvey platform in nine European languages between 24th June 2020 and 14th October 2020. Of 1834 contributions, 51 were excluded because participants did not name an underlying AILD, and four were excluded because of duplicate data entry. Results Of 1,779 participants, 1,752 resided in 20 different countries of the European Union and the United Kingdom (UK). The five countries with the highest numbers of contributions were France (n = 450), Germany (n = 318), the Netherlands (n = 267), Spain (n = 225), and the UK (n = 183). 2.2% of participants (39/1779) had been diagnosed with COVID‐19. There were no differences regarding age, sex, AILD, the status of liver cirrhosis, or status post liver transplantation between COVID‐19 and non‐COVID‐19 cases. Of the 39 COVID‐19 cases, five patients were admitted to a regular ward, one patient was admitted to ICU and required ventilation. Conclusion In our Europe‐wide, patient‐oriented survey on COVID‐19 in patients with AILD, we detected a low rate of COVID‐19, comparable to the period prevalence of the general population. These results suggest that patients with AILD are not at elevated risk of COVID‐19. Summarize the established knowledge on this subjectRegistry studies show that patients with advanced stages of liver disease are at risk of mortality caused by COVID‐19. But since data is entered by the treating physicians, there may be a bias towards reporting severe cases. Limited data is available on COVID‐19 in patients with autoimmune liver disease (AILD). Immunosuppressive treatment required in patients with AIH and AILD patients after liver transplantation might represent an additional risk factor.
What are the significant and/or new findings of this study?In our patient‐oriented survey we did not detect a higher frequency of COVID‐19 cases in patients with AILD compared to the general population. These results suggest that patients with AILD are not at elevated risk of COVID‐19. Our study is therefore an important addition to existing registry studies evaluating the risk of COVID‐19 in patients with AILD.
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Affiliation(s)
- Britta Franziska Zecher
- I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.,European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Hamburg, Germany
| | - Gustav Buescher
- I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.,European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Hamburg, Germany
| | - José Willemse
- Dutch Liver Patients Association, Hoogland, The Netherlands
| | | | | | - Angela Leburgue
- Association Pour la Lutte Contre les Maladies Inflammatoires du Foie et des Vois Biliaires (ALBI), Versailles, France
| | - Christoph Schramm
- I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.,European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Hamburg, Germany.,Martin Zeitz Centre for Rare Diseases, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Ansgar W Lohse
- I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.,European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Hamburg, Germany
| | - Marcial Sebode
- I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.,European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Hamburg, Germany
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9
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Michel M, Spinelli F, Grambihler A, Labenz C, Nagel M, Kaps L, Huber Y, Galle PR, Wörns MA, Schattenberg JM. Health-related quality of life in patients with autoimmune hepatitis. Qual Life Res 2021; 30:2853-2861. [PMID: 33978892 PMCID: PMC8481193 DOI: 10.1007/s11136-021-02850-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a rare chronic liver disease. Impaired health-related quality of life (HRQL) contributes to the overall disease burden. At current, only limited data related to the impact of treatment response on HRQL are available. OBJECTIVE The aim of the study was to determine the impact of biochemical remission on HRQL. METHODS Patients with AIH were prospectively enrolled between July 2018 and June 2019. A liver disease-specific tool, the chronic liver disease questionnaire (CLDQ) and the generic EQ-5D-5L were used to quantify HRQL. Treatment response was assessed biochemically by measurement of immunoglobulin G, ALT and AST. The cohort was divided into two groups according to their biochemical remission status in either complete vs. incomplete remission. Clinical as well as laboratory parameters and comorbidities were analysed using univariable and multivariable analysis to identify predictors of poor HRQL. RESULTS A total of 116 AIH patients were included (median age: 55; 77.6% female), of which 9.5% had liver cirrhosis. In this cohort, 38 (38.4%) showed a complete and 61 (61.6%) an incomplete biochemical remission at study entry. The HRQL was significantly higher in patients with a complete as compared to an incomplete biochemical remission (CLDQ overall score: 5.66 ± 1.15 vs. 5.10 ± 1.35; p = 0.03). In contrast, the generic EQ-5D-5L UI-value was not different between the groups. Multivariable analysis identified AST (p = 0.02) and an incomplete biochemical remission (p = 0.04) as independent predictors of reduced HRQL (CLDQ total value). CONCLUSION Patients with a complete biochemical remission had a significantly higher HRQL. Liver-related quality of life in patients living with AIH is dependent on the response to immunosuppressive treatment.
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Affiliation(s)
- Maurice Michel
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Francesca Spinelli
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Annette Grambihler
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Christian Labenz
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Michael Nagel
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Leonard Kaps
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Yvonne Huber
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Peter R. Galle
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Marcus-Alexander Wörns
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
| | - Jörn M. Schattenberg
- grid.410607.4Metabolic Liver Research Program, I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany ,grid.410607.4I. Department of Medicine, University Medical Centre Mainz, Mainz, Germany
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10
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Kilanczyk E, Banales JM, Wunsch E, Barbier O, Avila MA, Mato JM, Milkiewicz M, Milkiewicz P. S-adenosyl-L-methionine (SAMe) halts the autoimmune response in patients with primary biliary cholangitis (PBC) via antioxidant and S-glutathionylation processes in cholangiocytes. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165895. [PMID: 32681864 DOI: 10.1016/j.bbadis.2020.165895] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 07/06/2020] [Accepted: 07/10/2020] [Indexed: 01/14/2023]
Abstract
S-adenosyl-L-methionine is an endogenous molecule with hepato-protective properties linked to redox regulation and methylation. Here, the potential therapeutic value of SAMe was tested in 17 patients with PBC, a cholestatic disease with autoimmune phenomena targeting small bile ducts. Nine patients responded to SAMe (SAMe responders) with increased serum protein S-glutathionylation. That posttranslational protein modification was associated with reduction of serum anti-mitochondrial autoantibodies (AMA-M2) titers and improvement of liver biochemistry. Clinically, SAMe responders were younger at diagnosis, had longer duration of the disease and lower level of serum S-glutathionylated proteins at entry. SAMe treatment was associated with negative correlation between protein S-glutathionylation and TNFα. Furthermore, AMA-M2 titers correlated positively with INFγ and FGF-19 while negatively with TGFβ. Additionally, cirrhotic PBC livers showed reduced levels of glutathionylated proteins, glutaredoxine-1 (Grx-1) and GSH synthase (GS). The effect of SAMe was also analyzed in vitro. In human cholangiocytes overexpressing miR-506, which induces PBC-like features, SAMe increased total protein S-glutathionylation and the level of γ-glutamylcysteine ligase (GCLC), whereas reduced Grx-1 level. Moreover, SAMe protected primary human cholangiocytes against mitochondrial oxidative stress induced by tBHQ (tert-Butylhydroquinone) via raising the level of Nrf2 and HO-1. Finally, SAMe reduced apoptosis (cleaved-caspase3) and PDC-E2 (antigen responsible of the AMA-M2) induced experimentally by glycochenodeoxycholic acid (GCDC). These data suggest that SAMe may inhibit autoimmune events in patients with PBC via its antioxidant and S-glutathionylation properties. These findings provide new insights into the molecular events promoting progression of PBC and suggest potential therapeutic application of SAMe in PBC.
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Affiliation(s)
- E Kilanczyk
- Department of Medical Biology, Pomeranian Medical University, Szczecin, Poland
| | - J M Banales
- Department of Liver and Gastrointestinal Diseases, Biodonostia Health Research Institute, Donostia University Hospital, Ikerbasque, CIBERehd, San Sebastian, Spain
| | - E Wunsch
- Translational Medicine Group, Pomeranian Medical University, Szczecin, Poland
| | - O Barbier
- Laboratory of Molecular Pharmacology, CHU de Québec Research Center, Faculty of Pharmacy, Laval University, Québec City, QC G1V 0A6, Canada
| | - M A Avila
- Hepatology Program, Center for Applied Medical Research (CIMA), University of Navarra and CIBERehd, Pamplona 31008, Spain
| | - J M Mato
- CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Technology, Park of Bizkaia, Derio 48160, Bizkaia, Spain
| | - M Milkiewicz
- Department of Medical Biology, Pomeranian Medical University, Szczecin, Poland.
| | - P Milkiewicz
- Translational Medicine Group, Pomeranian Medical University, Szczecin, Poland; Liver and Internal Medicine Unit, Medical University of Warsaw, Warsaw, Poland
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11
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Moon AM, Singal AG, Tapper EB. Contemporary Epidemiology of Chronic Liver Disease and Cirrhosis. Clin Gastroenterol Hepatol 2020; 18:2650-2666. [PMID: 31401364 PMCID: PMC7007353 DOI: 10.1016/j.cgh.2019.07.060] [Citation(s) in RCA: 517] [Impact Index Per Article: 129.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/09/2019] [Accepted: 07/31/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Accurate estimates for the contemporary burden of chronic liver disease (CLD) are vital for setting clinical, research, and policy priorities. We aimed to review the incidence, prevalence, and mortality of CLD and its resulting complications, including cirrhosis and hepatocellular carcinoma (HCC). METHODS We reviewed the published literature on the incidence, prevalence, trends of various etiologies of CLD and its resulting complications. In addition, we provided updated data from the Centers for Disease Control and Global Burden of Disease Study on the morbidity and mortality of CLD, cirrhosis, and hepatocellular carcinoma (HCC). Lastly, we assessed the strengths and weaknesses of available sources of data in hopes of providing important context to these national estimates of cirrhosis burden. RESULTS An estimated 1.5 billion persons have CLD worldwide and the age-standardized incidence of CLD and cirrhosis is 20.7/100,000, a 13% increase since 2000. Similarly, cirrhosis prevalence and mortality has increased in recent years in the United States. The epidemiology of CLD is shifting, reflecting implementation of large-scale hepatitis B vaccination and hepatitis C treatment programs, the increasing prevalence of the metabolic syndrome, and increasing alcohol misuse. CONCLUSIONS The global burden of CLD and cirrhosis is substantial. Although vaccination, screening, and antiviral treatment campaigns for hepatitis B and C have reduced the CLD burden in some parts of the world, concomitant increases in injection drug use, alcohol misuse, and metabolic syndrome threaten these trends. Ongoing efforts to address CLD-related morbidity and mortality require accurate contemporary estimates of epidemiology and outcomes.
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Affiliation(s)
- Andrew M Moon
- Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Amit G Singal
- Division of Digestive and Liver Diseases, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Elliot B Tapper
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan; Gastroenterology Section, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan.
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12
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DuBrock HM, Cartin-Ceba R, Channick RN, Kawut SM, Krowka MJ. Sex Differences in Portopulmonary Hypertension. Chest 2020; 159:328-336. [PMID: 32798521 DOI: 10.1016/j.chest.2020.07.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/28/2020] [Accepted: 07/27/2020] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Portopulmonary hypertension (POPH), pulmonary arterial hypertension that develops in the setting of portal hypertension, can lead to right-sided heart failure and death. Being female is a known risk factor for POPH, but little is known about the effect of sex on clinical manifestations, hemodynamics, treatment response, and survival. RESEARCH QUESTION We sought to characterize sex differences in clinical characteristics, pulmonary hemodynamics, treatment response, and survival in patients with POPH. STUDY DESIGN AND METHODS We performed a retrospective cohort study of adult candidates for liver transplant (LT) who had POPH within the Organ Procurement and Transplantation Network database. Females and males were compared. Multivariate regression was performed to assess the association between sex and pulmonary vascular resistance (PVR) and survival. Patients were also stratified by age (50 years) to determine how age modifies the relationship between sex and hemodynamics and survival. RESULTS We included 190 adults (103 male, 87 female). Compared with men, women had a lower model for end-stage liver disease (MELD) score (12.1± 4.2 vs 13.8 ± 4.9; P = .01) and were more likely to have autoimmune liver disease. Women had a higher baseline PVR (610.6 ± 366.6 vs 461.0 ± 185.3 dynes-s-cm-5; P < .001) and posttreatment PVR (244.6 ± 119.5 vs 202.0 ± 87.7 dynes-s-cm-5; P = .008) and a greater treatment response (ΔPVR) (-359.3 ± 381.9 vs -260.2 ± 177.3 dynes-s-cm-5; P = .03). In multivariate analysis, female sex (or gender) remained associated with a higher baseline PVR (P = .008). Women and men had overall similar survival (P > .05). When patients were stratified by age, being female was independently associated with worse waiting list survival after adjusting for MELD and PVR in younger patients (HR, 6.61; 95% CI, 1.25-35.08; P = .03) but not in older patients. INTERPRETATION Compared with male candidates, female candidates for LT who had POPH had a higher PVR and lower MELD score and were more likely to have autoimmune liver disease. Women and men had similar overall survival, but female sex (or gender) was associated with worse survival in younger patients.
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Affiliation(s)
- Hilary M DuBrock
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, MN.
| | - Rodrigo Cartin-Ceba
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Scottsdale, AZ
| | - Richard N Channick
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, UCLA Medical Center, Los Angeles, CA
| | - Steven M Kawut
- Center for Clinical Epidemiology and Biostatistics and the Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Michael J Krowka
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, MN
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Zhang C, Wu SS, Dong XQ, Wu Z, Zhao H, Wang GQ. The efficacy and safety of different doses of glucocorticoid for autoimmune hepatitis: A systematic review and meta-analysis. Medicine (Baltimore) 2019; 98:e18313. [PMID: 31876706 PMCID: PMC6946338 DOI: 10.1097/md.0000000000018313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Glucocorticoid as the standard treatment of autoimmune hepatitis has been recommended with different doses. The purpose of this study is to compare the efficacy and safety of high and low doses for clinical practice. METHODS Medline, Embase, and Cochrane Library were searched until January 16th, 2019 for cohort studies or randomized controlled trials in patients with autoimmune hepatitis. Glucocorticoid 60 mg/d or 1 mg/kg/d was defined as high dose and 40 to 50 mg/d or 0.5 mg/d as low dose. Outcome of interests includes the incidence of the biochemical remission, adverse event, and endpoint events. Double arcsine method with a random-effect model was used to combine the incidence. Potential heterogeneity was explored by meta-regression and subgroup analysis. RESULTS Overall, 25 studies (3305 patients) were included, with 10 studies in the high dose group and 15 in low dose group. The biochemical remission rate in the high and low dose group was 0.79 (95% confidence interval [CI] [0.72, 0.85]) and 0.72 (95% CI [0.65, 0.78]), respectively. The incidence of endpoint events and adverse event in the high were slightly higher (0.03, 95% CI [0.02, 0.04]; 0.42, 95% CI [0.30, 0.53]) than that of the low dose group (0.01, 95% CI [0.00, 0.01]; 0.39, 95% CI [0.15, 0.63]). CONCLUSIONS For autoimmune hepatitis patients, 60 mg/d or 1 mg/kg/d of glucocorticoid gives higher biochemical remission rate and higher incidence of endpoint events and adverse events.
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Affiliation(s)
- Chi Zhang
- Department of Infectious Disease, Center for Liver Disease, Peking University First Hospital, Xicheng District
| | - Shan-Shan Wu
- National Clinical Research Center of Digestive Diseases, Beijing Friendship Hospital, Capital Medical University
| | - Xiao-Qin Dong
- Department of Infectious Disease, Center for Liver Disease, Peking University First Hospital, Xicheng District
| | - Zhao Wu
- Department of Infectious Disease, Center for Liver Disease, Peking University First Hospital, Xicheng District
| | - Hong Zhao
- Department of Infectious Disease, Center for Liver Disease, Peking University First Hospital, Xicheng District
- Peking University International Hospital, Beijing
| | - Gui-Qiang Wang
- Department of Infectious Disease, Center for Liver Disease, Peking University First Hospital, Xicheng District
- Peking University International Hospital, Beijing
- The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
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14
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Dyson JK, De Martin E, Dalekos GN, Drenth JPH, Herkel J, Hubscher SG, Kelly D, Lenzi M, Milkiewicz P, Oo YH, Heneghan MA, Lohse AW. Review article: unanswered clinical and research questions in autoimmune hepatitis-conclusions of the International Autoimmune Hepatitis Group Research Workshop. Aliment Pharmacol Ther 2019; 49:528-536. [PMID: 30671977 DOI: 10.1111/apt.15111] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 06/29/2018] [Accepted: 12/04/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a chronic inflammatory liver disease that results in substantial morbidity and mortality with many unanswered clinical and research questions. Improved understanding of disease pathogenesis, including the extra-hepatic manifestations of AIH, may allow targeted treatments with greater efficacy and fewer associated adverse events. AIM To identify the spectrum of unanswered clinical and research questions facing care providers in the management of patients with autoimmune hepatitis (AIH). METHODS The International Autoimmune Hepatitis Group initiated a series of research workshops to start to address these questions. Key issues were discussed in small group sessions with collation of all discussions to be summarised in this manuscript. RESULTS Key issues were identified as: the need for better understanding of disease pathogenesis, standardisation of the methods and assays used to evaluate autoantibodies in AIH, refinement of the histopathological criteria for "typical" or "compatible" AIH, focus on the interaction with non-alcohol related fatty liver disease, how to treat acute severe AIH, better assessment of quality of life in adults and paediatrics, standardising use of standard, third-line and experimental therapies in AIH and search for biomarkers early in the disease course that predict outcome. CONCLUSION This workshop has outlined the key unanswered clinical and research questions to help to define the research agenda in AIH.
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Abstract
Autoimmune hepatitis occurs in genetically susceptible individuals as a result of loss of immunological tolerance to hepatic autoantigens that can be precipitated by environmental triggers. The clinical manifestation is usually insidious but can be also acute with liver failure. The diagnosis is made on the basis of antibody positivity, elevated immunoglobulin G levels and interface hepatitis on liver histology. Induction of remission is achieved with high-dose steroids in the majority of cases, and maintenance of remission with azathioprine. Treatment withdrawal is achievable only in a small proportion of patients. Patients with acute liver failure unresponsive to steroids or those with end-stage liver failure or hepatocellular carcinoma may require liver transplantation. Variant forms of overlapping autoimmune hepatitis with either primary biliary cholangitis or sclerosing cholangitis are associated with worse outcomes. New insights into the pathophysiology of the disease may provide novel therapeutic targets and a more individualized approach to treatment of autoimmune hepatitis.
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Affiliation(s)
- Eleni Theocharidou
- Senior Clinical Fellow, Institute of Liver Studies, King's College Hospital NHS Foundation Trust, London
| | - Michael A Heneghan
- Consultant Hepatologist, Institute of Liver Studies, King's College Hospital NHS Foundation Trust, London SE5 9RS
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16
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Taneja S, Kumar P, Mitra S, Duseja A, Minz R, Das A, Dhiman RK, Chawla Y. Acute Exacerbation to Autoimmune Hepatitis Mimicking Acute Viral Hepatitis-A Case Series and Review of Literature. J Clin Exp Hepatol 2018; 8:98-103. [PMID: 29743801 PMCID: PMC5938335 DOI: 10.1016/j.jceh.2017.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 08/24/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Acute exacerbation of Autoimmune Hepatitis (AIH) poses a significant challenge for diagnosis as it can mimic acute viral hepatitis especially in absence of autoantibodies and hypergammaglobulinemia. AIM To determine the clinical, laboratory, histopathological characteristics and response to treatment in AIH patients with acute exacerbation. METHODS A retrospective analysis of 16 patients with acute exacerbation of AIH diagnosed over a period of eight years (2008-2016). RESULTS Out of the 111 patients diagnosed with AIH, acute exacerbation of AIH was diagnosed in 16 (14.4%) patients. All patients were females with median age of 35 years. Nine patients (56%) had Type 1 AIH and seven (44%) patients were diagnosed with seronegative AIH. All 16 (100%) patients had acute viral hepatitis like illness at presentation. The median bilirubin was 4.2 mg/dl (range, 2.2-20), aspartate transaminase was 568 IU/L (range, 390-908), alanine transaminase was 430 IU/L (range, 257-1026) and serum alkaline phosphatase was 395 IU/L (range, 112-890) during symptomatic period. The histopathological examination showed underlying chronic hepatitis in 10 (71.4%) patients, only fibrosis in 2 (14.2) patients and cirrhosis with activity in 2 (14.2%). All 16 (100%) patients were treated with a combination of steroids and azathioprine. Thirteen (81%) patients achieved complete biochemical remission and three (19%) patients achieved partial remission out of which one (6%) patient succumbed to illness because of the complications of cirrhosis. CONCLUSION A suspicion of acute exacerbation of AIH should be considered in patients with unexplained acute hepatitis mimicking acute viral hepatitis in the absence of positive viral markers. Through evaluation with immunoserological markers and liver biopsy can clinch the diagnosis of acute exacerbation of AIH in such cases.
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Key Words
- AASLD, American Association of Study of Liver
- AIH, Autoimmune Hepatitis
- ALKM-1, Liver/Kidney Microsomes
- ALT, Alanine Transaminase
- AMA, Antimitochondrial Antibody
- ANA, Antinuclear Antibodies
- ANCA, Anti-neutrophil Cytoplasmic Antibody
- ASMA, Anti-smooth Muscle Antibodies
- AST, Aspartate Transaminase
- CBR, Complete Biochemical Response
- CT, Computed Tomography
- ELISA, Enzyme-linked Immunosorbent Assay
- IAIHG, International Autoimmune Hepatitis Group
- IIF, Indirect Immunofluorescence
- INR, International Normalized Ratio
- MRCP, Magnetic Response Cholangiopancreatography
- PBC, Primary Biliary Cirrhosis
- PBR, Partial Biochemical Response
- PSC, Primary Sclerosing Cholangitis
- SAP, Serum Alkaline Phosphatase
- acute exacerbation
- autoimmune hepatitis
- primary biliary cirrhosis
- primary sclerosing cholangitis
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Affiliation(s)
- Sunil Taneja
- Department of Hepatology, Post Graduate Institute of Medical Education & Research, Chandigarh, India,Address for correspondence: Sunil Taneja, Assistant Professor, Department of Hepatology, PGIMER, Chandigarh, India. Tel.: +91 9592160444/172 2756344; fax: +91 1722756344.
| | - Pramod Kumar
- Department of Hepatology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Suvradeep Mitra
- Department of Histopathology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Ajay Duseja
- Department of Hepatology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Ranjana Minz
- Department of Immunopathology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Ashim Das
- Department of Histopathology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Radha K. Dhiman
- Department of Hepatology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Yogesh Chawla
- Department of Hepatology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
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17
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Williams WV. Hormonal contraception and the development of autoimmunity: A review of the literature. LINACRE QUARTERLY 2017; 84:275-295. [PMID: 28912620 PMCID: PMC5592309 DOI: 10.1080/00243639.2017.1360065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Estrogens and progestins are known to have profound effects on the immune system and may modulate the susceptibility to autoimmune diseases. A comprehensive literature search was carried out using PubMed for any of 153 autoimmune disease terms and the terms contraception, contraceptive, or their chemical components with limits of Humans + Title or Abstract. Over 1,800 titles were returned and scanned, 352 papers retrieved and reviewed in depth and an additional 70 papers retrieved from the bibliographies. Based on this review, substantial evidence exists linking the use of combined oral contraceptives to a lower incidence of hyperthyroidism, an increase in multiple sclerosis, ulcerative colitis, Crohn's disease, Systemic Lupus Erythematosus, and interstitial cystitis. Progesterone only contraceptives are linked to progesterone dermatitis and in one large developing world concurrent cohort study are associated with increases in arthropathies and related disorders, eczema and contact dermatitis, pruritis and related conditions, alopecia, acne, and urticaria. Hormonal contraceptives modulate the immune system and may influence the susceptibility to autoimmune diseases with significant increases in risk for several autoimmune diseases. SUMMARY Hormonal contraceptives (HCs), such as the "pill," Norplant, and vaginal rings, are very potent hormones that have effects on the immune system, which is made up of white blood cells and lymph nodes and normally defends the body against invading bacteria, viruses and parasites. This review looked at the association of HC use to the development of autoimmune diseases, where the immune system turns against the body and causes damage to organs. There is good evidence that HC use is associated with an increased risk of several serious autoimmune diseases such as Crohn's disease (which causes inflammation of the bowels), Lupus (which causes inflammation in many organs), and interstitial cystitis (which causes inflammation in the bladder). Several other rarer autoimmune diseases are also linked to HC use. People contemplating the use of HCs should be informed of these risks.
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Affiliation(s)
- William V Williams
- BriaCell Therapeutics Corporation, Havertown, PA, USA
- University of Pennsylvania, Philadelphia, PA, USA
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Serum Cytokine Levels and Their Relation to Clinical Features in Patients with Autoimmune Liver Diseases. J Immunol Res 2017; 2017:9829436. [PMID: 28299346 PMCID: PMC5337382 DOI: 10.1155/2017/9829436] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/01/2017] [Indexed: 01/30/2023] Open
Abstract
Serum cytokine levels were explored in a combined group of patients with autoimmune liver diseases (AILDs) and separately in patients with autoimmune hepatitis (AIH) and overlap syndrome. Overall, 60 patients with AILD, among them 32 patients with AIH and 28 patients with overlap syndrome, were included in the cross-sectional study. Serum cytokine levels were measured at baseline and compared to those of 21 healthy controls. Patients with AILD had significantly higher levels of IL-6 (0.70 (range 0.17–99.86) in patients with AILD compared to 0.40 (range 0.14–2.65) in controls, p < 0.01), IL-8 (1.66 (0.45–34.58) versus 0.53 (0.35–2.38), resp., p < 0.01), and TNF-α (2.61 (0.23–120.88) versus 1.65 (0.21–7.54), resp., p < 0.01). Adjusted logistic regression analysis revealed a pronounced relation of IL-8 and AILD, 48.36 (3.63–643.60), as well as AIH, 18.54 (1.08–318.54), and overlap syndrome, 23.85 (2.37–240.23), while the associations between the level of other cytokines and AILD were assessed as nonsignificant. In the language of absolute numbers, the increase of IL-8 serum level by 1 pg/mL had increased the chance for a patient to find himself in a group of AILD by 48.36 times. Also, high IL-8 serum levels were strongly related to clinical parameters.
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19
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Gil MN, Choi DR, Yu KS, Jeong JH, Bak DH, Kim DK, Lee NS, Lee JH, Jeong YG, Na CS, Na DS, Ryu KH, Han SY. Rhus verniciflua Stokes attenuates cholestatic liver cirrhosis-induced interstitial fibrosis via Smad3 down-regulation and Smad7 up-regulation. Anat Cell Biol 2016; 49:189-198. [PMID: 27722012 PMCID: PMC5052228 DOI: 10.5115/acb.2016.49.3.189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/02/2016] [Accepted: 09/06/2016] [Indexed: 12/21/2022] Open
Abstract
Cholestatic liver cirrhosis (CLC) eventually proceeds to end-stage liver failure by mediating overwhelming deposition of collagen, which is produced by activated interstitial myofibroblasts. Although the beneficial effects of Rhus verniciflua Stokes (RVS) on various diseases are well-known, its therapeutic effect and possible underlying mechanism on interstitial fibrosis associated with CLC are not elucidated. This study was designed to assess the protective effects of RVS and its possible underlying mechanisms in rat models of CLC established by bile duct ligation (BDL). We demonstrated that BDL markedly elevated the serological parameters such as aspartate aminotransferase, alanine transaminase, total bilirubin, and direct bilirubin, all of which were significantly attenuated by the daily uptake of RVS (2 mg/kg/day) for 28 days (14 days before and after operation) via intragastric route. We observed that BDL drastically induced the deterioration of liver histoarchitecture and excessive deposition of extracellular matrix (ECM), both of which were significantly attenuated by RVS. In addition, we revealed that RVS inhibited BDL-induced proliferation and activation of interstitial myofibroblasts, a highly suggestive cell type for ECM production, as shown by immunohistochemical and semi-quantitative detection of α-smooth muscle actin and vimentin. Finally, we demonstrated that the anti-fibrotic effect of RVS was associated with the inactivation of Smad3, the key downstream target of a major fibrogenic cytokine, i.e., transforming growth factor β (TGF-β). Simultaneously, we also found that RVS reciprocally increased the expression of Smad7, a negative regulatory protein of the TGF-β/Smad3 pathway. Taken together, these results suggested that RVS has a therapeutic effect on CLC, and these effects are, at least partly, due to the inhibition of liver fibrosis by the downregulation of Smad3 and upregulation of Smad7.
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Affiliation(s)
- Mi Na Gil
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Du Ri Choi
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Kwang Sik Yu
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Ji Heun Jeong
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Dong-Ho Bak
- Department of Dermatology, Chung-Ang University R&D Center, Seoul, Korea
| | - Do-Kyung Kim
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Nam-Seob Lee
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Je-Hun Lee
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | - Young-Gil Jeong
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea
| | | | | | - Ki-Hyun Ryu
- Department of Gastroenterology and Hepatology, Konyang University Hospital, Daejeon, Korea
| | - Seung Yun Han
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Korea.; Myunggok Research Institute, Konyang University College of Medicine, Daejeon, Korea
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20
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Javaid A, Poongkunran M, Allard FD, Kyaw W, Maung HH, Lau D. Subtle presentation of active primary biliary cirrhosis in chronic hepatitis B: a case report. Gastroenterol Rep (Oxf) 2016; 5:157-160. [PMID: 26893441 PMCID: PMC5421482 DOI: 10.1093/gastro/gov064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We are describing an interesting case of two chronic liver diseases in a 48-year-old Chinese woman. While chronic hepatitis B is a common entity in Asia, the patient was later found to have active, asymptomatic primary biliary cirrhosis due to a persistently elevated alkaline phosphatase level after optimal hepatitis B virus DNA suppression on antiviral therapy. This report emphasizes the importance of keeping a high index of suspicion for another potential liver disease process even after a patient has been successfully treated for a primary liver condition. Clinical vigilance, especially in atypical clinical presentations, can result in early accurate diagnosis and prompt treatment.
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Affiliation(s)
- Asad Javaid
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA and
| | - Mugilan Poongkunran
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA and
| | - Felicia D Allard
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Win Kyaw
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA and
| | - Htet Htet Maung
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA and
| | - Daryl Lau
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA and
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Autoimmune Hepatitis: Progress from Global Immunosuppression to Personalised Regulatory T Cell Therapy. Can J Gastroenterol Hepatol 2016; 2016:7181685. [PMID: 27446862 PMCID: PMC4904688 DOI: 10.1155/2016/7181685] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 11/20/2015] [Indexed: 12/23/2022] Open
Abstract
Autoimmune hepatitis (AIH) is an immune mediated liver injury. The precise aetiology of AIH is still unknown but current evidence suggests both genetic and environmental factors are involved. Breakdown in peripheral self-tolerance, and impaired functions of FOXP3(+) regulatory T cell along with effector cell resistance to suppression at the tissue level seem to play an important role in AIH immunopathogenesis. AIH is predominantly a T lymphocytes driven disease but B lymphocytes are also involved in the immunopathology. Innate immune cells are crucial in the initial onset of disease and their response is followed by adaptive T (Th1, Th17, and cytotoxic T cells) and B cell responses evidenced by liver histology and peripheral blood serology. Standard treatment regimens involving steroid and immunosuppressive medications lead to global immune suppression requiring life-long therapy with many side effects. Biologic therapies have been attempted but duration of remission is short-lived. Future direction of diagnosis and treatment for AIH should be guided by "omics" and the immunology profile of the individual patient and clinicians should aim to deliver personalised medicine for their patients. Cell therapy such as infusion of autologous, antigen-specific, and liver-homing regulatory T cells to restore hepatic immune tolerance may soon be a potential future treatment for AIH patients.
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22
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Affiliation(s)
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- EASL office, 7 Rue Daubin, CH 1203 Geneva, Switzerland,
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23
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Abstract
There have been significant advances in our understanding of human autoimmunity that have led to improvements in classification and diagnosis and, most importantly, research advances in new therapies. The importance of autoimmunity and the mechanisms that lead to clinical disease were first recognized about 50 years ago following the pioneering studies of Macfarlane Burnett and his Nobel Prize-winning hypothesis of the 'forbidden clone'. Such pioneering efforts led to a better understanding not only of autoimmunity, but also of lymphoid cell development, thymic education, apoptosis and deletion of autoreactive cells. Contemporary theories suggest that the development of an autoimmune disease requires a genetic predisposition and environmental factors that trigger the immune pathways that lead, ultimately, to tissue destruction. Despite extensive research, there are no genetic tools that can be used clinically to predict the risk of autoimmune disease. Indeed, the concordance of autoimmune disease in identical twins is 12-67%, highlighting not only a role for environmental factors, but also the potential importance of stochastic or epigenetic phenomena. On the other hand, the identification of cytokines and chemokines, and their cognate receptors, has led to novel therapies that block pathological inflammatory responses within the target organ and have greatly improved the therapeutic effect in patients with autoimmune disease, particularly rheumatoid arthritis. Further advances involving the use of multiplex platforms for diagnosis and identification of new therapeutic agents should lead to major breakthroughs within the next decade.
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Affiliation(s)
- Lifeng Wang
- Research Center for Biological Therapy, The Institute of Translational Hepatology, Beijing 302 Hospital, Beijing, China
| | - Fu-Sheng Wang
- Research Center for Biological Therapy, The Institute of Translational Hepatology, Beijing 302 Hospital, Beijing, China
| | - M Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis School of Medicine, Davis, CA, USA
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Kim HG, Han JM, Lee JS, Lee JS, Son CG. Ethyl acetate fraction of Amomum xanthioides improves bile duct ligation-induced liver fibrosis of rat model via modulation of pro-fibrogenic cytokines. Sci Rep 2015; 5:14531. [PMID: 26412144 PMCID: PMC4585957 DOI: 10.1038/srep14531] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 07/15/2015] [Indexed: 12/13/2022] Open
Abstract
We investigated anti-hepatofibrotic effects of ethyl acetate fraction of Ammomum xanthoides (EFAX) using bile duct ligation (BDL)-induced hepatic fibrosis in a rat model. Male SD rats (6 weeks old) underwent BDL followed by 15 days of orall administration of EFAX (12.5, 25 or 50 mg/kg) or ursodeoxycholic acid (25 mg/kg). BDL caused animal death, ascites formation, alterations in serum biochemistries, and severe hepatic injury with excessive collagen deposition, whereas EFAX treatment significantly attenuated these effects. BDL markedly increased the pro-fibrogenic cytokines (TGF-β, PDGF-β, and CTGF) and the extracellular matrix indicators α-SMA, TIMP-1 and collagen type 1 in hepatic proteins and gene expression levels, which were notably normalized by EFAX treatment. EFAX also markedly normalized pro-fibrogenic signaling molecules including Smad2/3, Smad7, Akt, p44/42, and p38. We further explored EFAX mechanisms of actions using LX-2 cells (human derived hepatic stellate cell line). Pre-treatment with EFAX drastically attenuated the activation of α-SMA and Smad2/3, which are downstream molecules of TGF-β. These findings suggest that EFAX may be a potent anti-hepatofibrotic agent, and its corresponding mechanisms primarily involve the modulation of pro-fibrogenic cytokines.
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Affiliation(s)
- Hyeong-Geug Kim
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon, 301-724, South Korea
| | - Jong-Min Han
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon, 301-724, South Korea
| | - Jin-Seok Lee
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon, 301-724, South Korea
| | - Jong Suk Lee
- GyeongGi Bio-Center, GSTEP, 864-1 Iui-dong, Yeongtong-gu, Suwon, Gyeonggi-do, South Korea
| | - Chang-Gue Son
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon, 301-724, South Korea
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Li YR, Li J, Zhao SD, Bradfield JP, Mentch FD, Maggadottir SM, Hou C, Abrams DJ, Chang D, Gao F, Guo Y, Wei Z, Connolly JJ, Cardinale CJ, Bakay M, Glessner JT, Li D, Kao C, Thomas KA, Qiu H, Chiavacci RM, Kim CE, Wang F, Snyder J, Richie MD, Flatø B, Førre Ø, Denson LA, Thompson SD, Becker ML, Guthery SL, Latiano A, Perez E, Resnick E, Russell RK, Wilson DC, Silverberg MS, Annese V, Lie BA, Punaro M, Dubinsky MC, Monos DS, Strisciuglio C, Staiano A, Miele E, Kugathasan S, Ellis JA, Munro JE, Sullivan KE, Wise CA, Chapel H, Cunningham-Rundles C, Grant SFA, Orange JS, Sleiman PMA, Behrens EM, Griffiths AM, Satsangi J, Finkel TH, Keinan A, Prak ETL, Polychronakos C, Baldassano RN, Li H, Keating BJ, Hakonarson H. Meta-analysis of shared genetic architecture across ten pediatric autoimmune diseases. Nat Med 2015; 21:1018-27. [PMID: 26301688 PMCID: PMC4863040 DOI: 10.1038/nm.3933] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 07/23/2015] [Indexed: 12/15/2022]
Abstract
Genome-wide association studies (GWASs) have identified hundreds of susceptibility genes, including shared associations across clinically distinct autoimmune diseases. We performed an inverse χ(2) meta-analysis across ten pediatric-age-of-onset autoimmune diseases (pAIDs) in a case-control study including more than 6,035 cases and 10,718 shared population-based controls. We identified 27 genome-wide significant loci associated with one or more pAIDs, mapping to in silico-replicated autoimmune-associated genes (including IL2RA) and new candidate loci with established immunoregulatory functions such as ADGRL2, TENM3, ANKRD30A, ADCY7 and CD40LG. The pAID-associated single-nucleotide polymorphisms (SNPs) were functionally enriched for deoxyribonuclease (DNase)-hypersensitivity sites, expression quantitative trait loci (eQTLs), microRNA (miRNA)-binding sites and coding variants. We also identified biologically correlated, pAID-associated candidate gene sets on the basis of immune cell expression profiling and found evidence of genetic sharing. Network and protein-interaction analyses demonstrated converging roles for the signaling pathways of type 1, 2 and 17 helper T cells (TH1, TH2 and TH17), JAK-STAT, interferon and interleukin in multiple autoimmune diseases.
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Affiliation(s)
- Yun R Li
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Medical Scientist Training Program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jin Li
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Sihai D Zhao
- Department of Biostatistics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jonathan P Bradfield
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Frank D Mentch
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - S Melkorka Maggadottir
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Cuiping Hou
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Debra J Abrams
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Diana Chang
- Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
- Program in Computational Biology and Medicine, Cornell University, Ithaca, New York, USA
| | - Feng Gao
- Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
| | - Yiran Guo
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Zhi Wei
- Department of Computer Science, New Jersey Institute of Technology, Newark, New Jersey, USA
| | - John J Connolly
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Christopher J Cardinale
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Marina Bakay
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Joseph T Glessner
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Dong Li
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Charlly Kao
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Kelly A Thomas
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Haijun Qiu
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Rosetta M Chiavacci
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Cecilia E Kim
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Fengxiang Wang
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - James Snyder
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Marylyn D Richie
- Department of Biochemistry and Molecular Biology, Eberly College of Science, The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Berit Flatø
- Department of Rheumatology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Øystein Førre
- Department of Rheumatology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Lee A Denson
- Division of Gastroenterology, The Center for Inflammatory Bowel Disease, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Susan D Thompson
- Divison of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Mara L Becker
- Division of Rheumatology, Children's Mercy Hospitals and Clinics, Kansas City, Missouri, USA
| | - Stephen L Guthery
- Department of Pediatrics, University of Utah School of Medicine and Primary Children's Medical Center, Salt Lake City, Utah, USA
| | - Anna Latiano
- Division of Gastroenterology, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Elena Perez
- Division of Pediatric Allergy and Immunology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Elena Resnick
- Institute of Immunology and Department of Medicine, Mount Sinai School of Medicine, New York, New York, USA
| | - Richard K Russell
- Department of Paediatric Gastroenterology, Yorkhill Hospital for Sick Children, Glasgow, Scotland, UK
| | - David C Wilson
- Paediatric Gastroenterology and Nutrition, Royal Hospital for Sick Children, University of Edinburgh, Ediburgh, UK
| | - Mark S Silverberg
- Mount Sinai Hospital IBD Centre, University of Toronto, Toronto, Ontario, Canada
| | - Vito Annese
- Unit of Gastroenterology, Department of Medical and Surgical Specialties, Careggi University Hospital, Florence, Italy
| | - Benedicte A Lie
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Marilynn Punaro
- Department of Rheumatology, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA
| | - Marla C Dubinsky
- Department of Pediatrics, Pediatric IBD Center, Cedars Sinai Medical Center, Los Angeles, California, USA
| | - Dimitri S Monos
- Department of Pathology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Caterina Strisciuglio
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, Naples, Italy
| | - Annamaria Staiano
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, Naples, Italy
| | - Erasmo Miele
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, Naples, Italy
| | - Subra Kugathasan
- Department of Pediatrics, Emory University School of Medicine and Children's Health Care of Atlanta, Atlanta, Georgia, USA
| | - Justine A Ellis
- Genes, Environment and Complex Disease, Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Pediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - Jane E Munro
- Pediatric Rheumatology Unit, Royal Children's Hospital, Parkville, Victoria, Australia
- Arthritis and Rheumatology Research, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Kathleen E Sullivan
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Carol A Wise
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA
| | - Helen Chapel
- Department of Clinical Immunology, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | | | - Struan F A Grant
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jordan S Orange
- Section of Immunology, Allergy, and Rheumatology, Department of Pediatric Medicine, Texas Children's Hospital, Houston, Texas, USA
| | - Patrick M A Sleiman
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Edward M Behrens
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Division of Rheumatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Anne M Griffiths
- The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Jack Satsangi
- Gastrointestinal Unit, Division of Medical Sciences, School of Molecular and Clinical Medicine, University of Edinburgh, Edinburgh, UK
| | - Terri H Finkel
- Department of Pediatrics, Nemours Children's Hospital, Orlando, Florida, USA
| | - Alon Keinan
- Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
- Program in Computational Biology and Medicine, Cornell University, Ithaca, New York, USA
| | - Eline T Luning Prak
- Department of Pathology and Lab Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Constantin Polychronakos
- Departments of Pediatrics and Human Genetics, McGill University Health Centre Research Institute, Montréal, Québec, Canada
| | - Robert N Baldassano
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Division of Gastroenterology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Hongzhe Li
- Department of Pathology and Lab Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Brendan J Keating
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hakon Hakonarson
- The Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Division of Pulmonary Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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Lian JS, Liu W, Hao SR, Chen DY, Wang YY, Yang JL, Jia HY, Huang JR. A serum metabolomic analysis for diagnosis and biomarker discovery of primary biliary cirrhosis and autoimmune hepatitis. Hepatobiliary Pancreat Dis Int 2015; 14:413-21. [PMID: 26256087 DOI: 10.1016/s1499-3872(15)60393-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Because of the diversity of the clinical and laboratory manifestations, the diagnosis of autoimmune liver disease (AILD) remains a challenge in clinical practice. The value of metabolomics has been studied in the diagnosis of many diseases. The present study aimed to determine whether the metabolic profiles, based on ultraperformance liquid chromatography-mass spectrometry (UPLC-MS), differed between autoimmune hepatitis (AIH) and primary biliary cirrhosis (PBC), to identify specific metabolomic markers, and to establish a model for the diagnosis of AIH and PBC. METHODS Serum samples were collected from 20 patients with PBC, 19 patients with AIH, and 25 healthy individuals. UPLC-MS data of the samples were analyzed using principal component analysis, partial least squares discrimination analysis and orthogonal partial least squares discrimination analysis. RESULTS The partial least squares discrimination analysis model (R2Y=0.991, Q2=0.943) was established between the AIH and PBC groups and exhibited both sensitivity and specificity of 100%. Five groups of biomarkers were identified, including bile acids, free fatty acids, phosphatidylcholines, lysolecithins and sphingomyelin. Bile acids significantly increased in the AIH and PBC groups compared with the healthy control group. The other biomarkers decreased in the AIH and PBC groups compared with those in the healthy control group. In addition, the biomarkers were downregulated in the AIH group compared with the PBC group. CONCLUSIONS The biomarkers identified revealed the pathophysiological changes in AILD and helped to discriminate between AIH and PBC. The predictability of this method suggests its potential application in the diagnosis of AILD.
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Affiliation(s)
- Jiang-Shan Lian
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; State Key Laboratory for Diagnosis and Treatment of Infectious Disease, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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Gatselis NK, Zachou K, Koukoulis GK, Dalekos GN. Autoimmune hepatitis, one disease with many faces: Etiopathogenetic, clinico-laboratory and histological characteristics. World J Gastroenterol 2015; 21:60-83. [PMID: 25574080 PMCID: PMC4284362 DOI: 10.3748/wjg.v21.i1.60] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/30/2014] [Accepted: 11/19/2014] [Indexed: 02/06/2023] Open
Abstract
Autoimmune hepatitis (AIH) is an unresolving progressive liver disease of unknown etiology characterized by hypergammaglobulinemia, autoantibodies detection and interface hepatitis. Due to the absence of specific diagnostic markers and the large heterogeneity of its clinical, laboratory and histological features, AIH diagnosis may be potentially difficult. Therefore, in this in-depth review we summarize the substantial progress on etiopathogenesis, clinical, serological and histological phenotypes of AIH. AIH has a global distribution affecting any age, both sexes and all ethnic groups. Clinical manifestations vary from asymptomatic to severe or rarely fulminant hepatitis. Hypergammaglobulinemia with selective elevation of IgG is found in most cases. Autoimmune attack is perpetuated, possibly via molecular mimicry, and favored by the impaired control of T-regulatory cells. Histology (interface hepatitis, emperipolesis and hepatic rosette formation) and autoantibodies detection although not pathognomonic, are still the hallmark for a timely diagnosis. AIH remains a major diagnostic challenge. AIH should be considered in every case in the absence of viral, metabolic, genetic and toxic etiology of chronic or acute hepatitis. Laboratory personnel, hepato-pathologists and clinicians need to become more familiar with disease expressions and the interpretation of liver histology and autoimmune serology to derive maximum benefit for the patient.
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28
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Wang JY, Lee CY, Pan PJ, Chang WC, Chiu JH, Chen WS, Shyr YM. Herb-induced autoimmune-like hepatitis in C57BL/6J mice. Liver Int 2014; 34:583-93. [PMID: 23890230 DOI: 10.1111/liv.12266] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 06/20/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Animal model suitable for studying herb-induced experimental autoimmune hepatitis (AIH) remains a challenging problem. A medicinal herb containing Scutellaria baicalensis Georgi (Sb) and Bupleurum chinense DC (Bc) has been sporadically reported to be related to liver fibrosis. The aim of this study was to investigate the effects of Sb and Bc on experimental AIH in mice. METHODS C57BL/6J mice received intraperitoneal injection of Sb and/or Bc herbal extracts (1 mg/kg) for 4 or 8 weeks. Serum samples were collected to analyse serum transferase (AST, ALT), creatinine, markers for AIH and hepatic cytokine levels such as IFN-γ, IL10 and TGF-β1. Peripheral mononuclear cell (PBMC) gene expression profiles were analysed to show their effects on immune system. RESULTS Our results showed that Sb or Bc treatment increased serum AST, ALT, IgG and ANA levels. Prominent necroinflammatory changes were demonstrated in the livers of Sb- or Bc-treated mice while the decrease in IFN-γ and elevation of IL10 and TGF-β1 levels in liver tissues. Furthermore, the PMBC gene expression profile suggested that Sb or Bc treatment could modulate immune responses. CONCLUSION We conclude that the presence of AIH in Sb- or Bc-treated mice and C57BL/6J strain mice is a reliable animal model for studying herb-induced AIH-like hepatitis.
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Affiliation(s)
- Jir-You Wang
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Orthopaedics, Taipei Veterans General Hospital, Taipei, Taiwan
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Li M, Zheng H, Tian QB, Rui MN, Liu DW. HLA-DR polymorphism and primary biliary cirrhosis: evidence from a meta-analysis. Arch Med Res 2014; 45:270-9. [PMID: 24657596 DOI: 10.1016/j.arcmed.2014.03.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Accepted: 02/26/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS We undertook this study to review and quantitatively analyze the association between human leukocyte antigen (HLA) DR polymorphisms and susceptibility of primary biliary cirrhosis (PBC). METHODS All relevant publications on the association between HLA-DR polymorphisms and PBC were searched through June 2013. Odds ratios (OR) and confidence intervals (CI) for the comparisons between case and control group were calculated. Statistical analysis was performed using Stata 11.0 software. RESULTS Nineteen articles (or 20 studies including the substudies) were identified. For DR*7 allele, the ORs (95% CIs) were 1.530 (1.310, 1.788), 1.757 (1.285, 2.403) and 1.495 (1.211, 1.845) in overall, Asian and European populations, respectively. For DR*8 alleles, the ORs (95% CIs) were 3.158 (1.822, 5.475), 2.803 (2.420, 3.247) and 3.056 (2.573, 3.629) in Asian, American and European subgroups, respectively. The subgroup analysis for DR*11 and DR*13 showed a significant association in Asian and European population. For DR*12 and *15 alleles, the overall ORs (95% CIs) were 0.551 (0.404, 0.753) and 0.721 (0.607, 0.857). However, in subgroup analysis for DR*12 allele, the association was only found in Asian population. In addition, statistical significance exists in American and European populations in the subgroup analysis for DR*15 allele. CONCLUSION Our meta-analysis suggested that HLA-DR *7 and *8 allele polymorphisms contributed to the susceptibility of PBC, whereas DR*11, *12, *13 and *15 allele polymorphisms are protective factors in certain population.
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Affiliation(s)
- Man Li
- Department of Epidemiology and Statistics, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Hao Zheng
- Department of Ultrasonography, Hebei Chest Hospital, Shijiazhuang, China
| | - Qing-bao Tian
- Department of Epidemiology and Statistics, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Mei-na Rui
- Department of Epidemiology and Statistics, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Dian-wu Liu
- Department of Epidemiology and Statistics, School of Public Health, Hebei Medical University, Shijiazhuang, China.
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Mohammed JP, Mattner J. Autoimmune disease triggered by infection with alphaproteobacteria. Expert Rev Clin Immunol 2014; 5:369-379. [PMID: 20161124 DOI: 10.1586/eci.09.23] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Despite having long been postulated, compelling evidence for the theory that microbial triggers drive autoimmunity has only recently been reported. A specific association between Novosphingobium aromaticivorans, an ubiquitous alphaproteobacterium, and primary biliary cirrhosis (PBC) has been uncovered in patients with PBC. Notably, the association between Novosphingobium infection and PBC has been confirmed in a mouse model in which infection leads to the development of liver lesions resembling PBC concomitant with the production of anti-PDC-E2 antibodies that cross-react with conserved PDC-E2 epitopes shared by Novosphingobium. The discovery of infectious triggers of autoimmunity is likely to change our current concepts about the etiology of various autoimmune syndromes and may suggest new and simpler ways to diagnose and treat these debilitating diseases.
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Affiliation(s)
- Javid P Mohammed
- Division of Immunobiology, Cincinnati Children's Hospital, Cincinnati, OH 45229, USA
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Fullerton AM, Roth RA, Ganey PE. Pretreatment with TCDD exacerbates liver injury from Concanavalin A: critical role for NK cells. Toxicol Sci 2013; 136:72-85. [PMID: 23970800 PMCID: PMC3829569 DOI: 10.1093/toxsci/kft174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 08/09/2013] [Indexed: 12/13/2022] Open
Abstract
For many liver diseases, including viral and autoimmune hepatitis, immune cells play an important role in the development and progression of liver injury. Concanavalin A (Con A) administration to rodents has been used as a model of immune-mediated liver injury resembling human autoimmune hepatitis. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) has been demonstrated to alter the development of immune-mediated diseases. Mice pretreated with TCDD developed exacerbated liver injury in response to administration of a mild dose (6 mg/kg) of Con A. In the present study, we tested the hypothesis that TCDD pretreatment exacerbates Con A-induced liver injury by enhancing the activation and recruitment of accessory cell types including neutrophils, macrophages, and natural killer (NK) cells. Mice were treated with 0, 0.3, 3, or 30 μg/kg TCDD and 4 days later with Con A or saline. TCDD pretreatment with doses of 3 and 30 μg/kg significantly increased liver injury from Con A administration. The plasma concentrations of neutrophil chemokines were significantly increased in TCDD-pretreated mice after Con A administration. NKT cell-deficient (CD1d KO) mice were used to examine whether NKT cells were required for TCDD/Con A-induced liver injury. CD1d KO mice were completely protected from liver injury induced by treatment with Con A alone, whereas the injury from TCDD/Con A treatment was reduced but not eliminated. However, T-cell deficient (RAG1 KO) mice were protected from liver injury induced by Con A irrespective of pretreatment with TCDD. TCDD/Con A treatment increased the percentage of NK cells expressing the activation marker CD69. Depletion of NK cells prior to treatment resulted in significant reductions in plasma interferon-γ and liver injury from TCDD/Con A treatment. In summary, exposure to TCDD exacerbated the immune-mediated liver injury induced by Con A, and our findings suggest that NK cells play a critical role in this response.
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Affiliation(s)
- Aaron M. Fullerton
- Department of Pharmacology & Toxicology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824
| | - Robert A. Roth
- Department of Pharmacology & Toxicology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824
| | - Patricia E. Ganey
- Department of Pharmacology & Toxicology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824
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Podda M, Selmi C, Lleo A, Moroni L, Invernizzi P. The limitations and hidden gems of the epidemiology of primary biliary cirrhosis. J Autoimmun 2013; 46:81-7. [PMID: 23871640 DOI: 10.1016/j.jaut.2013.06.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Accepted: 06/23/2013] [Indexed: 12/28/2022]
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Zachou K, Muratori P, Koukoulis GK, Granito A, Gatselis N, Fabbri A, Dalekos GN, Muratori L. Review article: autoimmune hepatitis -- current management and challenges. Aliment Pharmacol Ther 2013; 38:887-913. [PMID: 24010812 DOI: 10.1111/apt.12470] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 03/22/2013] [Accepted: 08/12/2013] [Indexed: 12/14/2022]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a disease of unknown aetiology characterised by interface hepatitis, hypergammaglobulinaemia, circulating autoantibodies and a favourable response to immunosuppression. AIM To review recent advancements in understanding aetiopathogenesis, clinical, serological and histological features, diagnostic criteria and treatment strategies of AIH. METHODS Published studies on AIH extracted mainly from PubMed during the last 15 years. RESULTS Autoimmune hepatitis has a global distribution affecting any age, both sexes and all ethnic groups. Clinical manifestations are variable ranging from no symptoms to severe acute hepatitis and only seldom to fulminant hepatic failure. Autoimmune attack is perpetuated, possibly via molecular mimicry mechanisms, and favoured by the impaired control of regulatory T-cells. A typical laboratory finding is hypergammaglobulinaemia with selective elevation of IgG, although in 15-25% of patients - particularly children, elderly and acute cases - IgG levels are normal. Liver histology and autoantibodies, although not pathognomonic, still remain the hallmark for diagnosis. Immunosuppressive treatment is mandatory and life-saving; however, to meet strict response criteria, the conventional therapy with prednisolone with or without azathioprine is far from ideal. CONCLUSIONS Autoimmune hepatitis remains a major diagnostic and therapeutic challenge. The clinician, the hepato-pathologist and the laboratory personnel need to become more familiar with different expressions of the disease, interpretation of liver histology and autoimmune serology. According to the strict definition of treatment response issued by the 2010 AASLD guidelines, many patients are nonresponders to conventional treatment. Newer immunosuppressive agents targeting pathogenetic mechanisms can improve patient management, which needs to be tailored on a case-by-case basis.
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Affiliation(s)
- K Zachou
- Department of Medicine and Research Laboratory of Internal Medicine, Medical School, Thessaly University, Larissa, Greece
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Varyani FK, West J, Card TR. Primary biliary cirrhosis does not increase the risk of UTIs following diagnosis compared to other chronic liver diseases? Liver Int 2013; 33:384-8. [PMID: 23402609 DOI: 10.1111/liv.12107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 12/12/2012] [Indexed: 12/17/2022]
Abstract
BACKGROUND Urinary Tract Infections (UTIs) occur more frequently in patients with Primary Biliary Cirrhosis (PBC). Previous studies have compared UTI occurrence in PBC and general population controls, however, it remains unclear if UTI is a feature of all chronic liver diseases (CLD)s, or is specific to PBC, or if this is a cause or consequence of PBC. AIMS We aimed to determine if UTIs are more common after a diagnosis of PBC compared to general population and CLD controls. METHODS A cohort study was conducted using the General Practice Research Database. We selected all cases of PBC plus 10 age- and sex-matched general population controls, and an unmatched group with other CLDs. We formed a Cox-proportional hazard model of time to first UTI following diagnosis. RESULTS Two hundred and forty-eight (24.6%) of PBC cases had a UTI event compared with 2127 (21.1%) of matched and 2131 (11.7%) of the unmatched CLD controls. Comparing PBC with matched controls showed an approximately 30% increased risk of UTI [hazard ratio (HR) 1.33 confidence interval (CI) 1.17-1.52]. Adjusting for diabetes, smoking and previous UTI reduced this (HR 1.25 CI 1.09-1.42). The Hazard Ratio comparing PBC with unmatched CLD controls was 2.00 (CI 1.76-2.28), but this became non-significant when adjusting for age, sex, diabetes, smoking and previous UTI 0.98 (0.86-1.12). CONCLUSIONS There is increased risk of UTI in PBC patients compared to general population controls, but not compared to CLD controls suggesting that this association is not specific to PBC after diagnosis.
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Affiliation(s)
- Fumi K Varyani
- Department of Gastroenterology, Lincoln County Hospital, Lincoln, UK
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Achenza MIS, Meda F, Brunetta E, Selmi C. Serum autoantibodies for the diagnosis and management of autoimmune liver diseases. Expert Rev Gastroenterol Hepatol 2012; 6:717-29. [PMID: 23237257 DOI: 10.1586/egh.12.58] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The spectrum of autoimmune liver diseases (AILD) includes primary biliary cirrhosis, primary sclerosing cholangitis and autoimmune hepatitis. The immunological mechanisms triggering the initiation and perpetuation of AILD remains unknown, while autoantigens are now recognized in most cases, and are generally nontraditional in their widespread distribution. Sensitive and specific methods for the detection of serum autoantibodies in patients affected by AILD represent a challenge for researchers and clinicians who desire to obtain an early and certain diagnosis as well as markers of disease control. To this regard, the use and interpretation of serum autoantibodies in AILD may be seen as paradigmatic for the large gaps in our knowledge based on the lack of true population-based studies. The present review article will critically discuss the available evidence on the use of autoantibody findings in the diagnosis or management of autoimmune liver disease.
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Affiliation(s)
- Maria I S Achenza
- Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
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Updated assessment of the prevalence, spectrum and case definition of autoimmune disease. Autoimmun Rev 2012; 11:754-65. [PMID: 22387972 DOI: 10.1016/j.autrev.2012.02.001] [Citation(s) in RCA: 287] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Accepted: 01/31/2012] [Indexed: 12/13/2022]
Abstract
Autoimmune diseases are heterogeneous with regard to prevalence, manifestations, and pathogenesis. The classification of autoimmune diseases has varied over time. Here, we have compiled a comprehensive up-to-date list of the autoimmune diseases, and have reviewed published literature to estimate their prevalence. We identified 81 autoimmune diseases. The overall estimated prevalence is 4.5%, with 2.7% for males and 6.4% for females. For specific diseases, prevalence ranges from 1% to <1/10(6). Considering all diseases in the class, the most common mean age-of-onset was 40-50 years. This list of autoimmune diseases has also yielded information about autoantigens. Forty-five autoimmune diseases have been associated with well-defined autoantigens. Of the diseases with known autoantigens, 33.3% had highly repetitive sequences, 35.6% had coiled-coil arrangements and 57.8% were associated with cellular membranes, which means that based on these structural motifs alone, autoantigens do not appear to be a random sample of the human proteome. Finally, we identified 19 autoimmune diseases that phenocopy diseases arising from germline mutations in the corresponding autoantigen. Collectively, our findings lead to a tentative proposal for criteria for assigning autoimmune pathogenesis to a particular disease.
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Minz RW, Kumar Y, Anand S, Singh S, Bamberi P, Verma S, Shegal S. Antinuclear antibody positive autoimmune disorders in North India: an appraisal. Rheumatol Int 2011; 32:2883-8. [PMID: 21898056 DOI: 10.1007/s00296-011-2134-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 08/22/2011] [Indexed: 11/28/2022]
Abstract
The autoimmune disorders (AID) have since long been considered to be commoner in Western world as compared to Asian countries. This, however, may not be true as in developing countries, there are incomplete epidemiological data and lack of advanced diagnostic facilities leading to under diagnosis in many cases. In this study, we performed an 11-year retrospective analysis of medical records of all clinically suspected and immunofluorescence antinuclear antibody test (IF-ANA)-positive cases. The IF-ANA-positive cases in the year 2006-2007 were further analyzed to find out the morbidity contribution by IF-ANA-positive AID. A total of 36,310 serum samples were screened for antinuclear antibody (ANA) between the years 1996 and 2006. The mean positivity was 12.3%. A constant and statistically significant increase in AID was noticed over the last 11 years. In the year 2006-2007, out of 3,435 suspected AID cases, 18.9% were ANA positive. Of these, 86.0% were adult patients with age ranging from 2¼ to 88 years. A female preponderance was also noted with a female-to-male ratio of 3:1. Among the ANA-positive connective tissue disorders (CTD), systemic lupus erythematosus was the most common clinical diagnosis (4.6/10,000 cases) followed by scleroderma (1.2/10,000) and overlap syndrome (0.7/10,000). Rheumatic, renal and hematopoietic systems were commonly involved. The overall frequency of CTD was 21%. The report is the first and largest hospital-based study from India, highlighting the rising incidence and clinical profile of ANA-positive AID.
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Affiliation(s)
- Ranjana Walker Minz
- Department of Immunopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
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Muñoz-Espinosa L, Alarcon G, Mercado-Moreira A, Cordero P, Caballero E, Avalos V, Villarreal G, Senties K, Puente D, Soto J, Esqueda B, Campos G, Martínez M, Jaquez J, Ramirez A, Reyes I, Kershenobich D, Montano-Loza AJ. Performance of the international classifications criteria for autoimmune hepatitis diagnosis in Mexican patients. Autoimmunity 2011; 44:543-8. [PMID: 21875376 DOI: 10.3109/08916934.2011.592884] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The revised score of the International Autoimmune Hepatitis Group (R-IAIHG) and the simplified criteria (SC) are used for diagnosis of autoimmune hepatitis (AIH). Our aim is to evaluate the performance of these classifications to differentiate AIH from other autoimmune liver diseases. The frequency of diagnosis of definite AIH was similar both by the R-IAIHG and the SC systems (41% versus 40%), whereas diagnosis of probable AIH was made more commonly by the R-IAIHG than the SC (59% versus 29%), and 23 patients that have been graded as definite (n = 7) or probable (n = 16) AIH by the R-IAIHG had non-diagnostic scores by the SC system. The scoring systems rendered concordant diagnosis of definite (n = 15) and probable (n = 13) AIH in 28/73 patients (38%). Discordant diagnoses of AIH were rendered in 45/73 patients (62%). The R-IAIHG exhibited a sensitivity of 95%, specificity of 90%, and positive predictive value (PPV) and negative predictive value (NPV) of 93% for both. On the other hand, the SC had a lower sensitivity (65%) but a higher specificity (100%), PPV of 100%, and NPV of 68%. In conclusion, both international scoring systems diagnosed the same number of cases as definite AIH. The R-IAIHG showed a higher sensitivity in diagnosing AIH, whereas the SC showed a higher specificity. SC are easier to apply at the bedside and exclude more patients that could have a different etiology.
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Affiliation(s)
- Linda Muñoz-Espinosa
- Liver Unit, "Dr. Jose E. Gonzalez" University Hospital, UANL, Monterrey, Nuevo Leon, Mexico.
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Saha S, Esposti SD. Meeting the need for women's health training in gastroenterology: creation of a women's digestive disorders program at Brown University. J Womens Health (Larchmt) 2011; 19:1409-15. [PMID: 20509790 DOI: 10.1089/jwh.2009.1727] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Despite training requirements, knowledge and self-efficacy in women's health issues remain inadequate in many fields. In gastroenterology, nearly 60% of patients are women, and many disorders are more common in women. Adequate training in gastrointestinal (GI) women's health is, therefore, critical for gastroenterologists. OBJECTIVES (1) To create a core faculty in GI women's health, (2) to develop a GI women's health curriculum, (3) to provide didactic education and clinical experiences in GI women's health, (4) to produce self-efficacy in the evaluation and management of GI women's health issues, and (5) to develop academic gastroenterologists focused on GI women's health. METHODS We assembled a multidisciplinary group of GI women's health experts dedicated to training and mentoring GI fellows. We also held focus groups to determine the unmet needs in the management of the GI health of female patients in our community. Results from this needs assessment formed the foci of our program. In 2002, we introduced a 2-month rotation in GI women's health. Then, in 2005, we introduced a 3-year women's health pathway for trainees committed to academic careers. RESULTS Between 2002 and 2008, 13 fellows who participated in the rotation have graduated from the Brown GI fellowship program, and 1 has completed the track. Satisfaction with the program is high. Postgraduation survey results show that >80% of graduates who participated in the rotation feel prepared to evaluate and treat GI disorders in pregnancy, and nearly 65% feel prepared to address general GI women's health issues. All respondents report the GI women's health rotation provided training that was otherwise not addressed during fellowship. CONCLUSIONS A training experience in GI women's health can be created using local resources and expertise. Gastroenterologists with this training feel prepared to evaluate and manage the spectrum of women's health issues encountered in practice.
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Affiliation(s)
- Sumona Saha
- Section of Gastroenterology and Hepatology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA.
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Mattner J. Genetic susceptibility to autoimmune liver disease. World J Hepatol 2011; 3:1-7. [PMID: 21307981 PMCID: PMC3035697 DOI: 10.4254/wjh.v3.i1.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 12/12/2010] [Accepted: 12/19/2010] [Indexed: 02/06/2023] Open
Abstract
Autoimmune hepatitis (AIH), primary sclerosing cholangitis (PSC) and primary biliary cirrhosis (PBC) are considered as putative autoimmune diseases of the liver. Whereas strong evidence that bacterial infection may trigger PBC exists, the etiologies for PSC and AIH remain unknown. Although there have been significant discoveries of genetic polymorphisms that may underlie the susceptibility to these liver diseases, their associations with environmental triggers and the subsequent implications have been difficult to elucidate. While single nucleotide polymorphisms within the negative costimulatory molecule cytotoxic T lymphocyte antigen 4 (CTLA-4) have been suggested as genetic susceptibility factors for all three disorders, we discuss the implications of CTLA-4 susceptibility alleles mainly in the context of PBC, where Novosphingobium aromaticivorans, an ubiquitous alphaproteobacterium, has recently been specifically associated with the pathogenesis of this devastating liver disease. Ultimately, the discovery of infectious triggers of PBC may expand the concept of genetic susceptibility in immune-mediated liver diseases from the concept of aberrant immune responses against self-antigens to insufficient and/or inappropriate immunological defense mechanisms allowing microbes to cross natural barriers, establish infection and damage respective target organs.
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Affiliation(s)
- Jochen Mattner
- Jochen Mattner, Microbiology Institute - Clinical Microbiology, Immunology and Hygiene, Universitätsklinikum Erlangen und Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen D91054, Germany
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Ngu JH, Bechly K, Chapman BA, Burt MJ, Barclay ML, Gearry RB, Stedman CAM. Population-based epidemiology study of autoimmune hepatitis: a disease of older women? J Gastroenterol Hepatol 2010; 25:1681-6. [PMID: 20880179 DOI: 10.1111/j.1440-1746.2010.06384.x] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIM The etiology of autoimmune hepatitis (AIH) is unknown, and limited epidemiological data are available. Our aim was to perform a population based epidemiological study of AIH in Canterbury, New Zealand. METHODS To calculate point prevalence, all adult and pediatric outpatient clinics and hospital discharge summaries were searched to identify all cases of AIH in the Canterbury region. Incident cases were recruited prospectively in 2008. Demographic and clinical data were extracted from case notes. Both the original revised AIH criteria and the simplified criteria were applied and cases were included in the study if they had definite or probable AIH. RESULTS When the original revised criteria were used, 138 cases (123 definite and 14 probable AIH), were identified. Prospective incidence in 2008 was 2.0/100,000 (95% confidence interval [CI] 0.8-3.3/100,000). Point prevalence on 31 December 2008 was 24.5/100,000 (95% CI 20.1-28.9). Age-standardized (World Health Organization standard population) incidence and prevalence were 1.7 and 18.9 per 100,000, respectively. Gender-specific prevalence confirmed a female predominance, while ethnicity-specific prevalence showed higher prevalence in Caucasians. 72% of cases presented after 40 years of age and the peak age of presentation was in the sixth decade of life. CONCLUSIONS This is the first and largest population-based epidemiology study of AIH in a geographically defined region using standardized inclusion criteria. The observed incidence and prevalence rates are among the highest reported. The present study confirms that AIH presents predominantly in older women, with a peak in the sixth decade, contrary to the classical description of the disease.
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Affiliation(s)
- Jing H Ngu
- Department of Gastroenterology, Christchurch Hospital, Christchurch, Canterbury, New Zealand
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Dudley FJ. Autoimmune hepatitis: an evolving demography? J Gastroenterol Hepatol 2010; 25:1591-2. [PMID: 20880164 DOI: 10.1111/j.1440-1746.2010.06446.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Assassi S, Fritzler MJ, Arnett FC, Norman GL, Shah KR, Gourh P, Manek N, Perry M, Ganesh D, Rahbar MH, Mayes MD. Primary biliary cirrhosis (PBC), PBC autoantibodies, and hepatic parameter abnormalities in a large population of systemic sclerosis patients. J Rheumatol 2009; 36:2250-6. [PMID: 19723904 PMCID: PMC2885441 DOI: 10.3899/jrheum.090340] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To investigate the diagnostic accuracy of antimitochondrial antibodies (AMA), sp100, and gp210 antibodies for primary biliary cirrhosis (PBC) in a large population of patients with systemic sclerosis (SSc); to examine concordance of these antibodies with subsets of SSc. Further, to assess the association of SSc-related antibodies with hepatic parameter abnormalities. METHODS We obtained medical records to verify the diagnoses of SSc and PBC. Sera from all participants were examined for the presence of SSc- and PBC-related antibodies, as well as for abnormalities in hepatic parameters. RESULTS We examined 817 patients with SSc, of whom 16 (2%) had confirmed PBC. The sensitivity and specificity of AMA by a MIT3 ELISA for PBC were 81.3% and 94.6%, respectively. Sp100 had a sensitivity and specificity of 31.3% and 97.4%, respectively, while gp210 had an even lower sensitivity. We were able to detect all PBC cases using AMA(MIT3) and sp100 as a combined marker, resulting in a significantly improved sensitivity of 100% (p = 0.042) with an incremental decrease in specificity to 92.6%. Independent of AMA or sp100 status, there was an association of anticentromere B (CENP-B) and anti-topoisomerase antibodies (ATA) with higher alkaline phosphatase levels (p = 0.051 and p = 0.003, respectively) while anti-RNA polymerase III (anti-RNAP) was associated with lower alkaline phosphatase levels (p = 0.019) among the patients with SSc. CONCLUSION Utilization of AMA(MIT3) and sp100 antibodies as a combined diagnostic marker leads to an improved detection of PBC in patients with SSc. CENP-B and ATA are associated with alkaline phosphatase elevation.
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Affiliation(s)
- Shervin Assassi
- The University of Texas-Health Science Center at Houston, 6431 Fannin, MSB 5.232, Houston, TX 77030, USA.
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Fujita T, Kojima M, Gotohda N, Takahashi S, Nakagohri T, Konishi M, Ochiai A, Kinoshita T. Incidence, clinical presentation and pathological features of benign sclerosing cholangitis of unknown origin masquerading as biliary carcinoma. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2009; 17:139-46. [PMID: 19399359 DOI: 10.1007/s00534-009-0115-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/25/2009] [Accepted: 03/10/2009] [Indexed: 12/31/2022]
Abstract
BACKGROUND Benign obstructions of the liver hilum are occasionally encountered in surgically resected cases. Some of these cases are pathologically classified as benign sclerosing cholangitis and are not clearly categorized. This study aims to elucidate the clinicopathological features of benign sclerosing cholangitis of unknown origin. METHODS Patients who had undergone surgery of the proximal bile duct from 1993 to 2008 on suspicion of proximal bile carcinoma were evaluated, then their clinical presentation, histopathological and immunohistochemical findings were retrospectively analyzed. RESULTS One hundred seventy-six patients underwent surgery during this period. Of these, five patients were diagnosed with benign sclerosing cholangitis of unknown origin. All five patients were middle-aged with no history of autoimmune disease. One patient died of recurrent cholangitis after surgery. Histopathologically, lymphoplasmacytic infiltrations were observed in all five cases. Among them, the clinicopathological findings of one patient were compatible with IgG4-related sclerosing cholangitis, and the other two patients had unusual histopathological findings with prominent lymph follicular formation. CONCLUSIONS Although patients with benign sclerosing cholangitis of unknown origin comprise a heterogeneous population, they can be further classified into subgroups. The response to immunosuppressive therapy, long-term prognosis and histological morphology of the disease should be considered in order to classify these cases of sclerosing cholangitis.
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Affiliation(s)
- Takeo Fujita
- Division of Digestive Surgery, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba 277-8577, Japan.
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Stanca CM, Babar J, Singal V, Ozdenerol E, Odin JA. Pathogenic role of environmental toxins in immune-mediated liver diseases. J Immunotoxicol 2009; 5:59-68. [PMID: 18382859 DOI: 10.1080/15476910802019086] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Immune-mediated liver diseases contribute significantly to morbidity and mortality due to liver failure and the need for liver transplantation. The pathogenesis of the immune-mediated chronic liver diseases, primary sclerosing cholangitis, autoimmune hepatitis, and primary biliary cirrhosis, is poorly understood. Genetic susceptibility factors may play a role, but increasing attention is being given to the association between environmental factors and these diseases. The existence of such a relationship is supported by epidemiologic surveys, animal models, and geographic clustering analyses. Unearthing the cause of this association may provide insight into the pathogenesis of immune-mediated chronic liver diseases and autoimmunity.
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Affiliation(s)
- Carmen M Stanca
- Department of Medicine, The Mount Sinai School of Medicine, New York, New York 10029, USA
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Werner M, Prytz H, Ohlsson B, Almer S, Björnsson E, Bergquist A, Wallerstedt S, Sandberg-Gertzén H, Hultcrantz R, Sangfelt P, Weiland O, Danielsson A. Epidemiology and the initial presentation of autoimmune hepatitis in Sweden: a nationwide study. Scand J Gastroenterol 2009; 43:1232-40. [PMID: 18609163 DOI: 10.1080/00365520802130183] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Autoimmune hepatitis (AIH) is a chronic liver disease, which if untreated can lead to cirrhosis and hepatic failure. The aim of the study was to investigate the incidence, prevalence, diagnostic tradition and clinical initial presentation of AIH. MATERIAL AND METHODS Analyses were performed in 473 patients identified as having probable or definite AIH. RESULTS The incidence of AIH was 0.85/100,000 (95% CI 0.69-1.01) inhabitants, which is somewhat lower than reported previously. The point prevalence amounted to 10.7/100,000 (95% CI 8.8-13.1), and 76% of the cases were females. The age-related incidence curve was bimodal but men were found to have only one incidence peak in the late teens, whereas women had a peak after menopause. AIH was presented as a spectrum of clinical settings from detected "en passant" to acute liver failure. Almost 30% of patients already had liver cirrhosis at diagnosis. Autoantibodies indicative of AIH type 1 were found in 79% of cases. Other concomitant autoimmune diseases were frequently found (49%). CONCLUSIONS The incidence and prevalence figures confirm that AIH is a fairly uncommon disease in the Swedish population. Symptoms at presentation were unspecific, but almost half of the patients were jaundiced, with around 30% having liver cirrhosis. The majority of Swedish AIH patients had AIH type 1.
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Affiliation(s)
- Mårten Werner
- Department of Medicine, Umeå University Hospital, Umeå, Sweden.
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Abstract
BACKGROUND AND AIM The prevalence and spectrum of autoimmune liver diseases (AILDs) in India are rarely reported in comparison to the West. METHOD During a study period of 7 years, all patients with chronic liver diseases (CLDs) were evaluated for the presence of AILDs on the basis of clinical, biochemical, imaging, serological, and histological characteristics. RESULTS Of a total of 1760 CLD patients (38.1% females), 102 patients (5.7%) had an AILD. A total of 75 (11.2%) female patients had an AILD. Among males, 27 (2.4%) had an AILD. The prevalence of AILDs in women increased from 11.2% to 45.7% and in men from 2.4% to 10.3%, after excluding alcohol, hepatitis B virus, and hepatitis C virus as a cause of CLD. Of the AILDs, autoimmune hepatitis (AIH) was present in 79 patients (77.4%), followed in descending order by primary biliary cirrhosis (PBC) in 10 patients (9.8%), PBC/AIH true overlap syndrome in six patients (5.8%), primary sclerosing cholangitis (PSC) in five patients (4.9%), and PBC/AIH switchover syndrome in two patients (1.9%). None had PSC/AIH or PBC/PSC overlap syndrome. Associated known autoimmune diseases were found in 40 (39.2%) patients. CONCLUSIONS AILDs are not uncommon in India. They should be suspected in all cases of CLDs, especially in middle-aged women who do not have problems with alcoholism and who are without viral etiology, as well as in all patients with known autoimmune diseases.
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Affiliation(s)
- Deepak N Amarapurkar
- Gastroenterology Department, Bombay Hospital and Medical Research Center, Mumbai, India
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Chung HV, Riley M, Ho JK, Leung B, Jevon GP, Arbour LT, Barker C, Schreiber R, Yoshida EM. Retrospective review of pediatric and adult autoimmune hepatitis in two quaternary care centres in British Columbia: increased prevalence seen in British Columbia's First Nations community. CANADIAN JOURNAL OF GASTROENTEROLOGY = JOURNAL CANADIEN DE GASTROENTEROLOGIE 2007; 21:565-8. [PMID: 17853950 PMCID: PMC2657988 DOI: 10.1155/2007/757906] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND It has been previously reported that British Columbia's (BC's) First Nations (Aboriginal) community has an increased risk of autoimmune diseases, including rheumatological conditions (rheumatoid arthritis, systemic lupus) and primary biliary cirrhosis. The researchers hypothesized that this community may also be at increased risk for autoimmune hepatitis (AIH). METHODS Independent, retrospective reviews of the databases of two separate tertiary/quaternary British Columbia university-affiliated health care institutions, the Adult Liver Transplant Program of the BC Transplant Society and the Division of Pediatric Gastroenterology, BC Children's Hospital (Vancouver, BC), were performed. All patients referred with a diagnosis of probable or definite AIH who identified themselves as being of First Nations descent from 1988 to 2004 were reviewed. The liver transplant database records all adult patients in the province referred for transplant assessment. The pediatric database records all children referred to the BC Children's Hospital. RESULTS A total of 68 adult patients with a definite or probable diagnosis of AIH were referred to the liver transplant program. Twelve patients (17.6%) were Aboriginal, 11 of which were female. Similarly, a total of 30 children with probable or definite AIH were identified from the pediatric database. Six of these cases (20%) were identified in Aboriginal children. CONCLUSIONS The findings suggest an increased prevalence of AIH among BC's First Nations community. A disproportionate First Nations representation was found on independent review of two databases. Future studies are needed to determine the true prevalence of AIH in this community, and to uncover the genetic predisposition and the environmental triggers explaining this phenomenon.
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Affiliation(s)
- Henry V Chung
- Division of Gastroenterology, Department of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Mark Riley
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia
| | - Jin K Ho
- Division of Gastroenterology, Department of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Benjamin Leung
- Department of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Gareth P Jevon
- Department of Pathology, University of British Columbia, Vancouver, British Columbia
| | - Laura T Arbour
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia
| | - Colin Barker
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia
| | - Richard Schreiber
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia
| | - Eric M Yoshida
- Division of Gastroenterology, Department of Medicine, University of British Columbia, Vancouver, British Columbia
- British Columbia Transplant Society, Vancouver, British Columbia
- Correspondence: Dr Eric M Yoshida, Division of Gastroenterology, Vancouver General Hospital, Diamond Health Care Centre, Suite #5153 – 2775 Laurel Street, Vancouver, British Columbia V5Z 1M9. Telephone 604-875-5371, fax 604-875-5373, e-mail
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