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Chi G, Pei J, Li X. Inflammatory bowel disease and risk of autoimmune hepatitis: A univariable and multivariable Mendelian randomization study. PLoS One 2024; 19:e0305220. [PMID: 38848323 PMCID: PMC11161122 DOI: 10.1371/journal.pone.0305220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 05/25/2024] [Indexed: 06/09/2024] Open
Abstract
OBJECTIVE This study aimed to use Mendelian randomization (MR) to investigate the potential causal association between inflammatory bowel disease (IBD) and autoimmune hepatitis (AIH). METHODS Two-sample MR was performed to estimate the causal effect of IBD on AIH. The primary analysis employed the inverse variance weighted (IVW) method in univariable MR analysis, supplemented by additional methods including MR-Egger, weighted median, simple mode, and weighted mode. The p values were adjusted by FDR p-value adjustment. In the replication analysis, the primary IVW analysis was repeated and then pooled by meta-analysis. Sensitivity analyses were performed using Cochran's Q test, MR-Egger intercept test, MR-PRESSO, leave-one-out, and funnel plot analysis to evaluate the robustness of the MR findings. Additionally, multivariable MR (MVMR) was employed to estimate the direct causal effect of IBD on the risk of AIH. RESULTS In univariable MR analysis, a significant positive causal association was observed between IBD (both Crohn's disease (CD) or ulcerative colitis (UC)) and the risk of AIH (for CD and AIH, the IVW odds ratio (OR) = 1.10, 95% confidence interval (CI) = 1.00-1.16, P = 0.045, FDR P = 0.045; for UC and AIH, the IVW OR = 1.07, 95% CI = 1.00-1.13, P = 0.038, FDR P = 0.076). Furthermore, no significant positive correlation between IBD and the risk of AIH (OR = 1.13, 95% CI = 0.94-1.35, P = 0.194). Sensitivity analysis revealed no pleiotropic bias. MVMR analysis further confirmed the direct causal effect of CD or UC on the risk of AIH after adjusting for the common risk factors (cigarettes per day and osteoporosis). In the replication analysis, the positive causal association between UC and the risk of AIH remain significant (the IVW odds ratio (OR) = 1.32, 95% CI = 1.18-1.48, P = 2.90E-06). While no significant positive association was observed between CD or IBD and the risk of AIH in the replication analysis, a suggestive positive association between the identified risk factors (UC, CD, and IBD) and the risk of AIH was detected in the meta-analysis (OR = 1.09, 95% CI = 1.05-1.13, P<0.0001). CONCLUSION This MR study revealed a positive impact of the identified risk factors (CD, UC and IBD) on the risk of AIH within the European population.
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Affiliation(s)
- Gang Chi
- Department of Biochemistry, Changzhi Medical College, Changazhi, Shanxi, China
| | - Jinhong Pei
- Department of Biochemistry, Changzhi Medical College, Changazhi, Shanxi, China
| | - Xueqing Li
- Department of Biochemistry, Changzhi Medical College, Changazhi, Shanxi, China
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Lasagna A, Sacchi P. The ABC of Immune-Mediated Hepatitis during Immunotherapy in Patients with Cancer: From Pathogenesis to Multidisciplinary Management. Cancers (Basel) 2024; 16:795. [PMID: 38398187 PMCID: PMC10886483 DOI: 10.3390/cancers16040795] [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: 11/16/2023] [Revised: 01/29/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Immune-mediated hepatotoxicity (IMH) is not-so-rare complication during treatment with immune checkpoint inhibitors (ICIs). This narrative review aims to report the current knowledge on hepatic immune-related adverse events (irAEs) during immunotherapy from pathogenesis to multidisciplinary management. The majority of cases of IMH are asymptomatic and only a few patients may have clinical conditions. The severity of IMH is usually stratified according to Common Terminology for Clinical Adverse Events (CTCAE) criteria, but these scores may overestimate the clinical severity of IMH compared to the Drug-Induced Liver Injury Network (DILIN) scale. The differential diagnosis of IMH is challenging because the elevated liver enzymes can be due to a number of etiologies such as viral infection, autoimmune and metabolic diseases, liver metastases, biliary diseases, and other drugs. The cornerstones of IMH management are represented by withholding or delaying ICI administration and starting immunosuppressive therapy. A multidisciplinary team, including oncologists, hepatologists, internists, and emergency medicine physicians, is essential for the management of IMH.
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Affiliation(s)
- Angioletta Lasagna
- Medical Oncology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Paolo Sacchi
- Division of Infectious Diseases I, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
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Gandarillas S, Newland ES, Toppmeyer D, Stephenson R, Denzin L, Dasgeb B. HLA inherence as a potential parameter in checkpoint inhibitor-associated autoimmune adverse event assessment. Front Med (Lausanne) 2024; 10:1288844. [PMID: 38259857 PMCID: PMC10800809 DOI: 10.3389/fmed.2023.1288844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/11/2023] [Indexed: 01/24/2024] Open
Abstract
Background The success of immunotherapy has made it a lifesaving treatment, but not without side effects. Currently, the risk factors for developing immune-related adverse events (irAEs) in patients who receive immunotherapy are poorly understood, and there is no risk-stratifying mechanism for potentially fatal irAEs. It is postulated that oncology patients with preexisting autoimmune diseases are likely to have flares on immunotherapy. However, some patients develop de novo autoimmune conditions on immunotherapy without a prior history. Literature reports have postulated that human leukocyte antigen (HLA) inherence may play a role in irAEs. However, this potential remains underexplored. Methods The oncology patients who developed autoimmune adverse events on immunotherapy for whom the continuation of treatment was prudent or lifesaving were selected. Of note, all nine patients received checkpoint inhibitors (CIs). Of the nine selected patients, only one had a prior history of an autoimmune condition. None of the nine selected patients had an active autoimmune condition at the time of CI initiation. Their HLA was typed, and the results were cross-referenced with the literature reports in PubMed and Google search with the corresponding autoimmune condition of each patient. Results Herein, we report nine patients with irAEs for whom retrospective HLA typing revealed the inherence of multiple related HLA alleles that may correspond to the autoimmune condition that they had developed on immunotherapy. It is to be mentioned that the inherence of enriched disease-related HLA alleles was shared among patients with the same irAEs. These patients developed a range of irAEs including bullous pemphigoid, pemphigus foliaceus/vulgaris, thyroiditis, vitiligo, and hepatitis on immunotherapy. Although some combinations of disease-related HLA were well reported in otherwise idiopathic autoimmune diseases, a frequently repeated HLA allele combination in our patient population was found to be rarely seen in the general population. Conclusion The authors suggest that an enriched inherence of disease-related HLA alleles may play a role in the genetic propensity for the development of irAEs in oncology patients, who receive immunotherapy, including CIs. Inherence of more than one or a cluster of particular autoimmune disease-related HLA alleles in patients who receive immunotherapy may unmask the corresponding autoimmune disease as the genotype inherence presents with the phenotype of the corresponding condition. It is suggested that enriched linked HLA genotypes, which are otherwise rare in the general population, may present as the corresponding phenotype of the autoimmune condition. Such clinical presentation, enhanced by immunotherapy, such as CIs, can play a role in risk stratifying patients for precision medicine and improve the outcome.
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Affiliation(s)
- Sophia Gandarillas
- Department of Dermatology, Wayne State University, Detroit, MI, United States
| | | | - Deborah Toppmeyer
- Department of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, United States
| | - Ryan Stephenson
- Department of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, United States
| | - Lisa Denzin
- Department of Pediatrics, Child Health Institute of New Jersey, Rutgers Medical School, New Brunswick, NJ, United States
| | - Bahar Dasgeb
- Department of Surgical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, United States
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Weltzsch JP, Ziegler A, Lohse A. [Autoimmune hepatitis : From autoantibodies to cirrhosis]. INNERE MEDIZIN (HEIDELBERG, GERMANY) 2023:10.1007/s00108-023-01519-9. [PMID: 37306752 DOI: 10.1007/s00108-023-01519-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Accepted: 04/12/2023] [Indexed: 06/13/2023]
Abstract
Autoimmune Hepatitis (AIH) is an immune-mediated liver disease of unknown origin. Its clinical presentation is heterogeneous and ranges from asymptomatic courses over several years to acute forms with acute liver failure. Accordingly, the diagnosis is only made at the stage of cirrhosis in about one third of affected individuals. Early diagnosis and a consistent, adequate, individualized, immunosuppressive therapy are crucial for the prognosis, which is excellent when treated properly. AIH is rare in the general population and can be easily overlooked due to its variable clinical picture and sometimes difficult diagnosis. AIH should be considered as a differential diagnosis in any unclear acute or chronic hepatopathy. The therapy initially consists of remission induction and subsequently maintenance therapy with (often lifelong) immunosuppressants.
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Affiliation(s)
- Jan Philipp Weltzsch
- I. Med. Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland.
| | - Annerose Ziegler
- I. Med. Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
| | - Ansgar Lohse
- I. Med. Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
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Ahuja N, Singh J, Minz RW, Anand S, Das A, Taneja S. HLA and Non-HLA gene polymorphisms in autoimmune hepatitis patients of North Indian adults. Front Immunol 2023; 13:984083. [PMID: 36741403 PMCID: PMC9891307 DOI: 10.3389/fimmu.2022.984083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 12/28/2022] [Indexed: 01/20/2023] Open
Abstract
Autoimmune hepatitis (AIH) is a chronic and progressive disease of the liver. This is a multifactorial autoimmune disease with both environmental factors and genetic factors playing a role in its pathogenesis. Certain environmental agents like viruses, drugs, etc., can trigger the disease in a genetically susceptible individual. The present study was aimed to explore the distribution of human leukocyte antigen (HLA)-DRB1, Protein tyrosine phosphatase non-receptor type 22 (PTPN22) and Cytotoxic T-Lymphocyte-associated protein 4 (CTLA-4) polymorphisms in North Indian adult AIH patients and their associations with clinical and pathological characteristics associated with the disease. A total of 147 subjects with 47 cases and 100 healthy controls were enrolled. Diagnosis of AIH was made by Revised International Autoimmune Hepatitis Group scoring system. HLA-DRB1 Typing was done by Luminex-based reverse Sequence-Specific Oligonucleotide Probing (SSOP). Single nucleotide variant (SNV) genotyping for CTLA-4 and PTPN22 was done by simple probe-based SNP arrays. Results indicated SLA positive AIH patients are poor responders to therapy. A significant predispositional association of HLA-DRB1*03 was observed in AIH patients from the North Indian population (p= 0.0001, OR=4.83 (2.30-10.15). The frequency of the GG genotype of CTLA-4 CT 60 was significantly increased in AIH patients compared to controls. Multinomial analysis showed that CTLA-4 CT 60 is an independent predictor for cases.
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Affiliation(s)
- Nishtha Ahuja
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Jagdeep Singh
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ranjana Walker Minz
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India,*Correspondence: Ranjana Walker Minz,
| | - Shashi Anand
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ashim Das
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sunil Taneja
- Department of Hepatology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Littera R, Perra A, Miglianti M, Piras IS, Mocci S, Lai S, Melis M, Zolfino T, Balestrieri C, Conti M, Serra G, Figorilli F, Firinu D, Onali S, Matta L, Porcu C, Pes F, Fanni D, Manieli C, Vacca M, Cusano R, Trucas M, Cipri S, Tranquilli S, Rassu S, Cannas F, Carta MG, Kowalik MA, Giuressi E, Faa G, Chessa L, Giglio S. The double-sided of human leukocyte antigen-G molecules in type 1 autoimmune hepatitis. Front Immunol 2022; 13:1007647. [PMID: 36311782 PMCID: PMC9597675 DOI: 10.3389/fimmu.2022.1007647] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/27/2022] [Indexed: 11/21/2022] Open
Abstract
The immunomodulatory effects of HLA-G expression and its role in cancers, human liver infections and liver transplantation are well documented, but so far, there are only a few reports addressing autoimmune liver diseases, particularly autoimmune hepatitis (AIH).
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Affiliation(s)
- Roberto Littera
- Medical Genetics, R. Binaghi Hospital, Sardegna, Italy
- AART-ODV (Association for the Advancement of Research on Transplantation), Cagliari, Italy
- *Correspondence: Roberto Littera, ; Andrea Perra, ; Stefano Mocci, ; Luchino Chessa,
| | - Andrea Perra
- AART-ODV (Association for the Advancement of Research on Transplantation), Cagliari, Italy
- Section of Pathology, Oncology and Molecular Pathology Unit, Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
- *Correspondence: Roberto Littera, ; Andrea Perra, ; Stefano Mocci, ; Luchino Chessa,
| | - Michela Miglianti
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Ignazio S. Piras
- Neurogenomics Division, Translational Genomics Research Institute (TGen), Phoenix, AZ, United States
| | - Stefano Mocci
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- *Correspondence: Roberto Littera, ; Andrea Perra, ; Stefano Mocci, ; Luchino Chessa,
| | - Sara Lai
- Medical Genetics, R. Binaghi Hospital, Sardegna, Italy
| | - Maurizio Melis
- AART-ODV (Association for the Advancement of Research on Transplantation), Cagliari, Italy
| | - Teresa Zolfino
- Division of Gastroenterology, Azienda di Rilievo Nazionale ed Alta Specializzazione (ARNAS), S. Michele Hospital, Cagliari, Italy
| | | | - Maria Conti
- Liver Unit, University Hospital, Cagliari, Italy
| | | | - Francesco Figorilli
- Division of Gastroenterology, Azienda di Rilievo Nazionale ed Alta Specializzazione (ARNAS), S. Michele Hospital, Cagliari, Italy
| | - Davide Firinu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Simona Onali
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Laura Matta
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Carmen Porcu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Francesco Pes
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Daniela Fanni
- Division of Pathology, Department of Medical Sciences and Public Health, University Hospital San Giovanni di Dio, Cagliari, Italy
| | - Cristina Manieli
- Department of Pathological Anatomy, Azienda di Rilievo Nazionale ed Alta Specializzazione (ARNAS), S. Michele Hospital, Cagliari, Italy
| | - Monica Vacca
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Roberto Cusano
- Biomedical Sector, Center for Advanced Studies, Research and Development (CRS4), Cagliari, Italy
| | - Marcello Trucas
- Section of Pathology, Oncology and Molecular Pathology Unit, Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Selene Cipri
- AART-ODV (Association for the Advancement of Research on Transplantation), Cagliari, Italy
| | - Stefania Tranquilli
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | | | - Federica Cannas
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Mauro Giovanni Carta
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Marta Anna Kowalik
- Section of Pathology, Oncology and Molecular Pathology Unit, Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | | | - Gavino Faa
- Division of Pathology, Department of Medical Sciences and Public Health, University Hospital San Giovanni di Dio, Cagliari, Italy
| | - Luchino Chessa
- AART-ODV (Association for the Advancement of Research on Transplantation), Cagliari, Italy
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- Liver Unit, University Hospital, Cagliari, Italy
- *Correspondence: Roberto Littera, ; Andrea Perra, ; Stefano Mocci, ; Luchino Chessa,
| | - Sabrina Giglio
- Medical Genetics, R. Binaghi Hospital, Sardegna, Italy
- AART-ODV (Association for the Advancement of Research on Transplantation), Cagliari, Italy
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- Centre for Research University Services (CeSAR, Centro Servizi di Ateneo per la Ricerca), University of Cagliari, Monserrato, Italy
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Sayaf K, Gabbia D, Russo FP, De Martin S. The Role of Sex in Acute and Chronic Liver Damage. Int J Mol Sci 2022; 23:ijms231810654. [PMID: 36142565 PMCID: PMC9505609 DOI: 10.3390/ijms231810654] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Acute and chronic hepatic damages are caused by xenobiotics or different diseases affecting the liver, characterized by different etiologies and pathological features. It has been demonstrated extensively that liver damage progresses differently in men and women, and some chronic liver diseases show a more favorable prognosis in women than in men. This review aims to update the most recent advances in the comprehension of the molecular basis of the sex difference observed in both acute and chronic liver damage. With this purpose, we report experimental studies on animal models and clinical observations investigating both acute liver failure, e.g., drug-induced liver injury (DILI), and chronic liver diseases, e.g., viral hepatitis, alcoholic liver disease (ALD), non-alcoholic fatty liver disease (NAFLD), autoimmune liver diseases, and hepatocellular carcinoma (HCC).
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Affiliation(s)
- Katia Sayaf
- Department of Surgery, Oncology and Gastroenterology, University of Padova, 35131 Padova, Italy
| | - Daniela Gabbia
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
| | - Francesco Paolo Russo
- Department of Surgery, Oncology and Gastroenterology, University of Padova, 35131 Padova, Italy
- Gastroenterology and Multivisceral Transplant Units, Azienda Ospedale—Università di Padova, 35131 Padova, Italy
- Correspondence:
| | - Sara De Martin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
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Liao TJ, Pan B, Hong H, Hayashi P, Rule JA, Ganger D, Lee WM, Rakela J, Chen M. Whole Exome Sequencing Reveals Genetic Variants in HLA Class II Genes Associated With Transplant-free Survival of Indeterminate Acute Liver Failure. Clin Transl Gastroenterol 2022; 13:e00502. [PMID: 35905417 PMCID: PMC10476814 DOI: 10.14309/ctg.0000000000000502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/17/2022] [Indexed: 09/06/2023] Open
Abstract
INTRODUCTION Indeterminate acute liver failure (IND-ALF) is a rare clinical syndrome with a high mortality rate. Lacking a known etiology makes rapid evaluation and treatment difficult, with liver transplantation often considered as the only therapeutic option. Our aim was to identify genetic variants from whole exome sequencing data that might be associated with IND-ALF clinical outcomes. METHODS Bioinformatics analysis was performed on whole exome sequencing data for 22 patients with IND-ALF. A 2-tier approach was used to identify significant single-nucleotide polymorphisms (SNPs) associated with IND-ALF clinical outcomes. Tier 1 identified the SNPs with a higher relative risk in the IND-ALF population compared with those identified in control populations. Tier 2 determined the SNPs connected to transplant-free survival and associated with model for end-stage liver disease serum sodium and Acute Liver Failure Study Group prognostic scores. RESULTS Thirty-one SNPs were found associated with a higher relative risk in the IND-ALF population compared with those in controls, of which 11 belong to the human leukocyte antigen (HLA) class II genes but none for the class I. Further analysis showed that 5 SNPs: rs796202376, rs139189937, and rs113473719 of HLA-DRB5; rs9272712 of HLA-DQA1; and rs747397929 of IDO1 were associated with a higher probability of IND-ALF transplant-free survival. Using 3 selected SNPs, a model for the polygenic risk score was developed to predict IND-ALF prognoses, which are comparable with those by model for end-stage liver disease serum sodium and Acute Liver Failure Study Group prognostic scores. DISCUSSION Certain gene variants in HLA-DRB5, HLA-DQA1, and IDO1 were found associated with IND-ALF transplant-free survival. Once validated, these identified SNPs may help elucidate the mechanism of IND-ALF and assist in its diagnosis and management.
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Affiliation(s)
- Tsung-Jen Liao
- Division of Bioinformatics and Biostatistics, U.S. Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, Arkansas, USA;
| | - Bohu Pan
- Division of Bioinformatics and Biostatistics, U.S. Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, Arkansas, USA;
| | - Huixiao Hong
- Division of Bioinformatics and Biostatistics, U.S. Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, Arkansas, USA;
| | - Paul Hayashi
- Division of Hepatology and Nutrition, Office of New Drugs, FDA Center for Drug Evaluation and Research, Silver Spring, Maryland, USA;
| | - Jody A. Rule
- Division of Gastroenterology and Hepatology, University of Texas Southwestern, Dallas, Texas, USA;
| | - Daniel Ganger
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, USA;
| | - William M. Lee
- Division of Gastroenterology and Hepatology, University of Texas Southwestern, Dallas, Texas, USA;
| | - Jorge Rakela
- Division of Gastroenterology and Hepatology, Mayo Clinic, Phoenix, Arizona, USA.
| | - Minjun Chen
- Division of Bioinformatics and Biostatistics, U.S. Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, Arkansas, USA;
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Centa M, Weinstein EG, Clemente JC, Faith JJ, Fiel MI, Lyallpuri R, Herbin O, Alexandropoulos K. Impaired central tolerance induces changes in the gut microbiota that exacerbate autoimmune hepatitis. J Autoimmun 2022; 128:102808. [PMID: 35276587 PMCID: PMC8963681 DOI: 10.1016/j.jaut.2022.102808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 02/10/2022] [Accepted: 02/19/2022] [Indexed: 12/18/2022]
Abstract
Medullary thymic epithelial cells (mTECs) induce T cell tolerance in the thymus through the elimination of self-reactive thymocytes. Commensal bacteria are also critical for shaping T cell responses in the gut and distal organs. We previously showed that mice depleted of mTECs (Traf6ΔTEC) generated autoreactive T cells and developed autoimmune hepatitis (AIH). In this report, we found that Toll-like receptor (TLR)-mediated microbial sensing on liver hematopoietic cells and the gut microbiota contributed to AIH development in Traf6ΔTEC mice. While adoptive transfer of thymic Traf6ΔTEC T cells in immune-deficient mice was sufficient for AIH development, colonization of germ-free mice with Traf6ΔTEC microbiota failed to induce AIH, suggesting that the gut microbiota contributes to but is not sufficient for AIH development. Microbiota-mediated exacerbation of AIH associated with increased numbers of hepatic Foxp3+ T cells and their increase was proportional to the degree of inflammation. The contribution of the gut microbiota to AIH development associated with an altered microbial signature whose composition was influenced by the qualitative nature of the thymic T cell compartment. These results suggest that aberrant selection of T cells in the thymus can induce changes in the gut microbiota that lead to exacerbation of organ-specific autoimmunity and AIH. Our results add to our understanding of the mechanisms of AIH development and create a platform towards developing novel therapeutic approaches for treating this disease.
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Affiliation(s)
- Monica Centa
- Department of Medicine, Division of Clinical Immunology, Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Jose C Clemente
- Department of Medicine, Division of Clinical Immunology, Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jeremiah J Faith
- Department of Medicine, Division of Clinical Immunology, Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - M Isabel Fiel
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robby Lyallpuri
- Department of Medicine, Division of Clinical Immunology, Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Konstantina Alexandropoulos
- Department of Medicine, Division of Clinical Immunology, Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Terziroli Beretta-Piccoli B, Mieli-Vergani G, Vergani D. Autoimmmune hepatitis. Cell Mol Immunol 2022; 19:158-176. [PMID: 34580437 PMCID: PMC8475398 DOI: 10.1038/s41423-021-00768-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 08/29/2021] [Indexed: 02/06/2023] Open
Abstract
Autoimmune hepatitis (AIH) is a T-cell mediated, inflammatory liver disease affecting all ages and characterized by female preponderance, elevated serum transaminase and immunoglobulin G levels, positive circulating autoantibodies, and presence of interface hepatitis at liver histology. AIH type 1, affecting both adults and children, is defined by positive anti-nuclear and/or anti-smooth muscle antibodies, while type 2 AIH, affecting mostly children, is defined by positive anti-liver-kidney microsomal type 1 and/or anti-liver cytosol type 1 antibody. While the autoantigens of type 2 AIH are well defined, being the cytochrome P4502D6 (CYP2D6) and the formiminotransferase cyclodeaminase (FTCD), in type 1 AIH they remain to be identified. AIH-1 predisposition is conferred by possession of the MHC class II HLA DRB1*03 at all ages, while DRB1*04 predisposes to late onset disease; AIH-2 is associated with possession of DRB1*07 and DRB1*03. The majority of patients responds well to standard immunosuppressive treatment, based on steroid and azathioprine; second- and third-line drugs should be considered in case of intolerance or insufficient response. This review offers a comprehensive overview of pathophysiological and clinical aspects of AIH.
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Affiliation(s)
- Benedetta Terziroli Beretta-Piccoli
- Epatocentro Ticino & Facoltà di Scienze Biomediche, Università della Svizzera Italiana, Lugano, Switzerland.
- Institute for Research in Biomedicine, Bellinzona, Switzerland.
- King's College London Faculty of Life Sciences & Medicine at King's College Hospital, London, UK.
| | - Giorgina Mieli-Vergani
- King's College London Faculty of Life Sciences & Medicine at King's College Hospital, London, UK
- Paediatric Liver, GI and Nutrition Centre, MowatLabs, King's College Hospital, London, UK
| | - Diego Vergani
- King's College London Faculty of Life Sciences & Medicine at King's College Hospital, London, UK
- Institute of Liver Studies, MowatLabs, King's College Hospital, London, UK
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11
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Liang M, Liwen Z, Jianguo S, Juan D, Fei D, Yin Z, Changping W, Jianping C. Fecal Microbiota Transplantation Controls Progression of Experimental Autoimmune Hepatitis in Mice by Modulating the TFR/TFH Immune Imbalance and Intestinal Microbiota Composition. Front Immunol 2021; 12:728723. [PMID: 34912328 PMCID: PMC8667314 DOI: 10.3389/fimmu.2021.728723] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 11/04/2021] [Indexed: 12/12/2022] Open
Abstract
Intestinal microbiota (IM) dysbiosis contributes to the development of autoimmune hepatitis (AIH). This study aimed to investigate the potential effect of fecal microbiota transplantation (FMT) in a murine model of experimental AIH (EAH), a condition more similar to that of AIH patients. Changes in the enteric microbiome were determined in AIH patients and EAH mice. Moreover, we established an experimental model of secondary EAH mice harboring dysbiosis (ABx) to analyze the effects of therapeutic FMT administration on follicular regulatory T (TFR) and helper T (TFH) cell imbalances and IM composition in vivo. Alterations of the IM composition and bacterial translocation occurred in AIH patients compared to nonalcoholic fatty liver disease patients and healthy controls (HCs). Therapeutic FMT significantly attenuated liver injury and bacterial translocation and improved the imbalance between splenic TFR cells and TFH cells in ABx EAH mice. Furthermore, therapeutic FMT also partially reversed the increasing trend in serum liver enzymes (ALT and AST) of CXCR5-/-EAH mice on the 28th day. Finally, therapeutic FMT could effectively restore antibiotic-induced IM dysbiosis in EAH mice. Taken together, our findings demonstrated that FMT was capable of controlling hepatitis progression in EAH mice, and the associated mechanism might be involved in the regulation of the TFR/TFH immune imbalance and the restoration of IM composition.
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Affiliation(s)
- Ma Liang
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China.,Department of Gastroenterology, The People's Hospital of Wuqia, Xinjiang, China
| | - Zhang Liwen
- Department of Pediatrics, the Second People's Hospital of Changzhou, Affiliate Hospital of Nanjing Medical University, Changzhou, China
| | - Song Jianguo
- Department of Gastroenterology, The People's Hospital of Wuqia, Xinjiang, China
| | - Dai Juan
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ding Fei
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhang Yin
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Wu Changping
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Chen Jianping
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
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12
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New agents for immunosuppression. Best Pract Res Clin Gastroenterol 2021; 54-55:101763. [PMID: 34874846 DOI: 10.1016/j.bpg.2021.101763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/16/2021] [Accepted: 08/30/2021] [Indexed: 01/31/2023]
Abstract
The human abdomen harbors organs that the host's immune system can attack easily. This immunological storm front leads to diseases like Crohn's Disease, Ulcerative Colitis or Autoimmune Hepatitis. Serious symptoms like pain, diarrhea, fatigue, or malnutrition accompany these diseases. Moreover, many patients have an increased risk for developing special kind of malignancies and some autoimmune disease can show a high mortality. The key to treat them consists of a deep understanding of their pathophysiology. In vitro and especially in vivo basic research laid the foundation for our increasing knowledge about it during the past years. This enabled the development of new therapeutic approaches that interact directly with cytokines or immune cells instead of building the treatment on a total immunosuppression. Different kind of antibodies, kinase inhibitors, and regulatory T cells build the base for these approaches. This review shows new therapeutical approaches in gastrointestinal autoimmune diseases in context to their pathophysiological basis.
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13
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Kemme S, Mack CL. Pediatric Autoimmune Liver Diseases: Autoimmune Hepatitis and Primary Sclerosing Cholangitis. Pediatr Clin North Am 2021; 68:1293-1307. [PMID: 34736590 DOI: 10.1016/j.pcl.2021.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In chronic hepatitis, a broad differential diagnosis should be considered to accurately identify the cause(s) of liver injury. Autoimmune liver diseases (autoimmune hepatitis, primary sclerosing cholangitis, overlap syndrome) can occur in the setting of limited symptoms; therefore, a high index of suspicion and appropriate diagnostic workup should be performed. Most children with autoimmune hepatitis achieve sustained remission with medical therapy; however, there are no equivalent therapies for primary sclerosing cholangitis that impact the progression of disease. Research should include biomarker studies to predict histologic remission in autoimmune hepatitis and mechanistic studies to define future treatment targets for primary sclerosing cholangitis.
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Affiliation(s)
- Sarah Kemme
- Section of Gastroenterology, Hepatology, and Nutrition, Digestive Health Institute, University of Colorado Denver School of Medicine and Children's Hospital Colorado, 13123 East 16th Avenue, Mailstop B290, Aurora, CO 80045, USA.
| | - Cara L Mack
- Section of Gastroenterology, Hepatology, and Nutrition, Digestive Health Institute, University of Colorado Denver School of Medicine and Children's Hospital Colorado, 13123 East 16th Avenue, Mailstop B290, Aurora, CO 80045, USA
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14
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Ma Y, Su H, Yuksel M, Longhi MS, McPhail M, Wang P, Bansal S, Wong GW, Graham J, Yang L, Thompson R, Doherty DG, Hadzic N, Zen Y, Quaglia A, Henghan M, Samyn M, Vergani D, Mieli-Vergani G. Human Leukocyte Antigen Profile Predicts Severity of Autoimmune Liver Disease in Children of European Ancestry. Hepatology 2021; 74:2032-2046. [PMID: 33971035 PMCID: PMC8463472 DOI: 10.1002/hep.31893] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/03/2021] [Accepted: 04/28/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND AIMS Genetic predisposition to autoimmune hepatitis (AIH) in adults is associated with possession of human leukocyte antigen (HLA) class I (A*01, B*08) and class II (DRB1*03, -04, -07, or -13) alleles, depending on geographic region. Juvenile autoimmune liver disease (AILD) comprises AIH-1, AIH-2, and autoimmune sclerosing cholangitis (ASC), which are phenotypically different from their adult counterparts. We aimed to define the relationship between HLA profile and disease course, severity, and outcome in juvenile AILD. APPROACH AND RESULTS We studied 236 children of European ancestry (152 female [64%], median age 11.15 years, range 0.8-17), including 100 with AIH-1, 59 with AIH-2, and 77 with ASC. The follow-up period was from 1977 to June 2019 (median 14.5 years). Class I and II HLA genotyping was performed using PCR/sequence-specific primers. HLA B*08, -DRB1*03, and the A1-B8-DR3 haplotype impart predisposition to all three forms of AILD. Homozygosity for DRB1*03 represented the strongest risk factor (8.8). HLA DRB1*04, which independently confers susceptibility to AIH in adults, was infrequent in AIH-1 and ASC, suggesting protection; and DRB1*15 (DR15) was protective against all forms of AILD. Distinct HLA class II alleles predispose to the different subgroups of juvenile AILD: DRB1*03 to AIH-1, DRB1*13 to ASC, and DRB1*07 to AIH-2. Possession of homozygous DRB1*03 or of DRB1*13 is associated with fibrosis at disease onset, and possession of these two genes in addition to DRB1*07 is associated with a more severe disease in all three subgroups. CONCLUSIONS Unique HLA profiles are seen in each subgroup of juvenile AILD. HLA genotype might be useful in predicting responsiveness to immunosuppressive treatment and course.
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Affiliation(s)
- Yun Ma
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Habin Su
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Department of Liver Disease of Chinese PLA General Hospital, the Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Muhammed Yuksel
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Koc University Research Centre for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Maria Serena Longhi
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Department of Anesthesia, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215, USA
| | - Mark McPhail
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Pengyun Wang
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Sanjay Bansal
- Paediatric Liver, GI and Nutrition Centre, King’s College Hospital, Denmark Hill, London, UK
| | - Guan-Wee Wong
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Department of Medicine, Ng Teng Fong General Hospital, 1 Jurong East Street, Singapore 609606
| | - Jonathon Graham
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Li Yang
- Department of Gastroenterology & Hepatology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Richard Thompson
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Paediatric Liver, GI and Nutrition Centre, King’s College Hospital, Denmark Hill, London, UK
| | - Derek G. Doherty
- Division of Immunology, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Nedim Hadzic
- Paediatric Liver, GI and Nutrition Centre, King’s College Hospital, Denmark Hill, London, UK
| | - Yoh Zen
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Alberto Quaglia
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Department of Cellular Pathology, Royal Free London NHS Foundation Trust, UCL Cancer Institute, Research Department of Pathology, London, UK
| | - Michael Henghan
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Marianne Samyn
- Paediatric Liver, GI and Nutrition Centre, King’s College Hospital, Denmark Hill, London, UK
| | - Diego Vergani
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK
| | - Giorgina Mieli-Vergani
- Institute of Liver Studies, MowatLabs, Department of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Liver Sciences and Medicine, King’s College London, London, UK,Paediatric Liver, GI and Nutrition Centre, King’s College Hospital, Denmark Hill, London, UK
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15
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Liberal R, de Boer YS, Heneghan MA. Established and novel therapeutic options for autoimmune hepatitis. Lancet Gastroenterol Hepatol 2021; 6:315-326. [DOI: 10.1016/s2468-1253(20)30328-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 08/14/2020] [Accepted: 09/25/2020] [Indexed: 02/06/2023]
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16
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Al Naqbi H, Mawart A, Alshamsi J, Al Safar H, Tay GK. Major histocompatibility complex (MHC) associations with diseases in ethnic groups of the Arabian Peninsula. Immunogenetics 2021; 73:131-152. [PMID: 33528690 PMCID: PMC7946680 DOI: 10.1007/s00251-021-01204-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 01/05/2021] [Indexed: 12/12/2022]
Abstract
Since the discovery of human leukocyte antigens (HLAs), the function of major histocompatibility complex (MHC) gene families in a wide range of diseases have been the subject of research for decades. In particular, the associations of autoimmune disorders to allelic variants and candidate genes encoding the MHC are well documented. However, despite decades of research, the knowledge of MHC associations with human disease susceptibility have been predominantly studied in European origin, with limited understanding in different populations and ethnic groups. This is particularly evident in countries and ethnic populations of the Arabian Peninsula. Human MHC haplotypes, and its association with diseases, of the variable ethnic groups of this region are poorly studied. This review compiled published manuscripts that have reported a list of autoimmune diseases (insulin-dependent diabetes mellitus, systemic lupus erythematosus, myasthenia gravis, rheumatoid arthritis, psoriasis vulgaris, and multiple sclerosis) associated with MHC class I and class II in the populations of the Arabian Peninsula, specifically Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, the United Arab Emirates, and Yemen. Data available was compared with other three ethnic groups, namely Caucasians, Asians, and Africans. The limited data available in the public domain on the association between MHC gene and autoimmune diseases highlight the challenges in the Middle Eastern region.
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Affiliation(s)
- Halima Al Naqbi
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Aurélie Mawart
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Jawaher Alshamsi
- College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Habiba Al Safar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Guan K Tay
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
- Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
- College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
- Division of Psychiatry, Faculty of Health and Medical Sciences, The University of Western Australia, Crawley, WA, Australia.
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.
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17
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Fedrizzi RS, Coral GP, Mattos AAD, Mattos ÂZD, Tovo CV. EVALUATION OF PATIENTS WITH AUTOIMMUNE HEPATITIS IN A SPECIALIZED OUTPATIENT CLINIC IN SOUTHERN BRAZIL. ARQUIVOS DE GASTROENTEROLOGIA 2021; 57:361-365. [PMID: 33237214 DOI: 10.1590/s0004-2803.202000000-69] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a chronic liver disease, characterized by necroinflammation and autoimmune etiology. Studies evaluating the characteristics of patients with AIH are scarce in Brazil. OBJECTIVE Our objective was to evaluate the profile of patients with AIH in a specialized center in Southern Brazil and to verify factors related to treatment response. METHODS this was a retrospective cohort study, which analyzed demographic, epidemiological, clinical, laboratory, and histologic data. Patients with AIH diagnosed according to the criteria of the International Autoimmune Hepatitis Group (IAIHG) were included. In liver biopsies, the degree of fibrosis, histological activity, presence of hepatocyte rosettes, plasma cell infiltrates, and confluent necrosis were evaluated. In the statistical analysis, the significance level was 5%. RESULTS Forty adults patients diagnosed with AIH were included. The evaluated population predominantly consisted of women (75.0%) and the average age at diagnosis was 44.2 years. The association with extrahepatic autoimmune diseases occurred in 20.0% of cases. Clinically, 35.0% of patients presented with acute onset hepatitis, 37.5% with cirrhosis, and 27.5% with other forms of presentation. The most common clinical manifestation was jaundice (47.5%). Thirty-five patients were treated, and of these, 97.1% used prednisone combined with azathioprine. The average treatment time was 2.7 years. Response to treatment was complete or partial in 30 (85.7%) and absent in 5 (14.3%) patients. There was no statistically significant difference when evaluating response to treatment in relation to forms of presentation, histological findings, and the presence of autoantibodies. Regarding fibrosis, regression was observed in 18.75% of the cases. CONCLUSION Most patients with AIH were young at presentation and of female sex. The association with extrahepatic autoimmune diseases and cirrhosis at presentation was seen in a considerable proportion of patients. Treatment was effective, but there were no clinical, histological or serological parameters capable of predicting treatment response.
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Affiliation(s)
- Renata S Fedrizzi
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Gabriela P Coral
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Angelo A de Mattos
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Ângelo Z de Mattos
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Cristiane V Tovo
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
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18
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Porta G, de Carvalho E, Santos JL, Gama J, Bezerra JA. Autoimmune Hepatitis: Predictors of Native Liver Survival in Children and Adolescents. J Pediatr 2021; 229:95-101.e3. [PMID: 33500120 DOI: 10.1016/j.jpeds.2020.10.009] [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: 05/09/2020] [Revised: 08/12/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To determine predictors of native liver survival (NLS) in children and adolescents with autoimmune hepatitis (AIH). STUDY DESIGN The medical records of children and adolescents with AIH were reviewed. A questionnaire was used to collect data on clinical presentation, biochemical and histologic findings, and treatment. RESULTS A total of 819 patients were included, 89.6% with AIH-1 and 10.4% with AIH-2. The median age (months) at onset was 108 (min 6; max 210; IQR 59). The female sex was predominant (75.8%). The overall survival was 93.0%, with an NLS of 89.9%; 4.6% underwent liver transplantation. The risk of death or liver transplantation during follow-up was 3.2 times greater in patients with AIH-1 (P = .024). Greater levels of aspartate aminotransferase, alanine aminotransferase, serum albumin, platelet, and normal international normalized ratio at the initial presentation were associated with longer NLS (P = .046, P = .006, P < .001, P = .001, and P = .019, respectively). Normal C3 levels was associated with longer NLS (P = .017), with a chance of death or liver transplantation during follow-up being 3.4 times greater in patients with C3 below normal. Death or liver transplantation during follow-up was 2.8 times greater in patients with associated sclerosing cholangitis (P = .046). Complete remission favored NLS (P < .001), with a risk of death or liver transplantation 11.7 times greater for patients not achieving remission. CONCLUSIONS The best predictors of NLS in children and adolescents with AIH were the AIH-2 subtype, a normal C3 at diagnosis, remission during treatment, and normal a cholangiogram during the disease course.
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Affiliation(s)
- Gilda Porta
- Pediatric Hepatology, Transplant Unit - H. Sírio Libanês/H. Menino Jesus, S. Paulo, Brazil.
| | - Elisa de Carvalho
- Department of Pediatric Gastroenterology, Hepatology, Hospital da Criança de Brasília, UniCEUB, Brasília, Brazil
| | - Jorge L Santos
- Faculty of Health Sciences, Health Sciences Research Centre - CICS-UBI, University of Beira Interior, Covilhã, Portugal
| | - Jorge Gama
- Centre of Mathematics and Applications, University of Beira Interior, Covilhã, Portugal
| | - Jorge A Bezerra
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH
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19
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Karrar A, Rajput B, Hariharan S, Abdelatif D, Houry M, Moosvi A, Ali I, Tan D, Noor S, Esmaeili D, Felix S, Alaparthi L, Otgonsuren M, Lam B, Goodman ZD, Younossi ZM. Major Histocompatibility Complex Class I-Related Chain A Alleles and Histology of Nonalcoholic Fatty Liver Disease. Hepatol Commun 2021; 5:63-73. [PMID: 33437901 PMCID: PMC7789833 DOI: 10.1002/hep4.1610] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 08/11/2020] [Accepted: 08/30/2020] [Indexed: 01/05/2023] Open
Abstract
Major histocompatibility complex class I-related chain A (MICA) is a highly polymorphic gene that modulates immune surveillance by binding to its receptor on natural killer cells, and its genetic polymorphisms have been associated with chronic immune-mediated diseases. The progressive form of nonalcoholic fatty liver disease (NAFLD), nonalcoholic steatohepatitis (NASH), is characterized by accumulation of fat and inflammatory cells in the hepatic parenchyma, potentially leading to liver cell injury and fibrosis. To date, there are no data describing the potential role of MICA in the pathogenesis of NAFLD. Therefore, our aim was to assess the association between MICA polymorphism and NASH and its histologic features. A total of 134 subjects were included. DNA from patients with biopsy-proven NAFLD were genotyped using polymerase chain reaction-sequence-specific oligonucleotide for MICA alleles. Liver biopsies were assessed for histologic diagnosis of NASH and specific pathologic features, including stage of fibrosis and grade of inflammation. Multivariate analysis was performed to draw associations between MICA alleles and the different variables; P ≤ 0.05 was considered significant. Univariate analysis showed that MICA*011 (odds ratio [OR], 7.14; 95% confidence interval [CI], 1.24-41.0; P = 0.04) was associated with a higher risk for histologic NASH. Multivariate analysis showed that MICA*002 was independently associated with a lower risk for focal hepatocyte necrosis (OR, 0.24; 95% CI, 0.08-0.74; P = 0.013) and advanced fibrosis (OR, 0.11; 95% CI, 0.02-0.70; P = 0.019). MICA*017 was independently associated with a higher risk for lymphocyte-mediated inflammation (OR, 5.12; 95% CI, 1.12-23.5; P = 0.035). Conclusion: MICA alleles may be associated with NASH and its histologic features of inflammation and fibrosis. Additional research is required to investigate the potential role of MICA in increased risk or protection against NAFLD.
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Affiliation(s)
- Azza Karrar
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Bijal Rajput
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Siddharth Hariharan
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Dinan Abdelatif
- Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
| | - Mohamad Houry
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Ali Moosvi
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Irfan Ali
- Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
| | - Daisong Tan
- Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
| | - Sohailla Noor
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Donna Esmaeili
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Sean Felix
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Lakshmi Alaparthi
- Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
| | - Munkhzul Otgonsuren
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA
| | - Brian Lam
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA.,Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
| | - Zachary D Goodman
- Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
| | - Zobair M Younossi
- Betty and Guy Beatty Center for Integrated ResearchInova Fairfax Medical CampusFalls ChurchVAUSA.,Center for Liver DiseasesDepartment of MedicineInova Fairfax HospitalFalls ChurchVAUSA
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20
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Zhang HP, Liu YM, Li Z, Ma YX, Li LJ, Zhao DT, Lou JL, Gao ZH, Yan HP. Clinical characteristics and HLA genotypes in Chinese patients with anti-SLA/LP-positive autoimmune hepatitis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:153. [PMID: 33569455 PMCID: PMC7867871 DOI: 10.21037/atm-20-8036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Anti-soluble liver antigen/liver pancreas (anti-SLA/LP) is a highly specific serological marker for the diagnosis of autoimmune hepatitis (AIH). The aim of the present study was to define the clinical characteristics and human leucocyte antigen (HLA) genotypes of Chinese patients with anti-SLA/LP positive AIH. Methods Ninety-one AIH patients who were anti-SLA/LP positive were enrolled in this case control study. Clinical information was obtained through reviewing patients’ clinical notes. High-resolution genotyping of HLA-A, B, C, DRB1, and DQB1 alleles was performed by sequence-based typing polymerase chain reaction on 62 of the 91 patients. Data from 500 healthy patients were used as baseline controls. Results Anti-SLA/LP-positive AIH patients were characterized as follows: adults (age 20–80 years), female (88%), and frequent anti-nuclear antibody positivity (91%). Genetically, compared with the controls, HLA-B*35:01 and C*08:01 were significantly more frequent in patients. The frequencies of HLA-B*08:01, B*40:02, DRB1*04:01, DRB1*04:05, DRB1*14:01, and DRB1*16:02 increased, and the frequency in DRB1*15:01 decreased in patients, but did not reach significance after Bonferroni’s correction. Patients with other autoimmune diseases had a higher DRB1*04:05 and DQB1*04:01 allele carrier frequency than those without. DRB1*04:05 and DQB1*04:01 alleles were found at increased frequency in patients with decompensated liver disease than those with compensated liver disease. Conclusions Chinese anti-SLA/LP-positive AIH patients have some distinct clinical characteristics than other populations reported in the literature. The presence of certain specific HLA alleles could potentially increase the risk of developing anti-SLA/LP-positive AIH or other autoimmune disease and decompensated liver disease in the Chinese population.
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Affiliation(s)
- Hai-Ping Zhang
- Clinical Laboratory Center and Clinical Research Center for Autoimmune Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Yan-Min Liu
- Department of Liver Disease Immunology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Zhao Li
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Yin-Xue Ma
- Clinical Laboratory Center and Clinical Research Center for Autoimmune Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Li-Juan Li
- Clinical Laboratory Center and Clinical Research Center for Autoimmune Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Dan-Tong Zhao
- Clinical Laboratory Center and Clinical Research Center for Autoimmune Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Jin-Li Lou
- Clinical Laboratory Center and Clinical Research Center for Autoimmune Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Zu-Hua Gao
- Department of Pathology, McGill University, Montreal, Canada
| | - Hui-Ping Yan
- Clinical Laboratory Center and Clinical Research Center for Autoimmune Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing, China
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21
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Novel HLA Class I Alleles Outside the Extended DR3 Haplotype Are Protective against Autoimmune Hepatitis. Clin Transl Gastroenterol 2020; 10:e00032. [PMID: 31211758 PMCID: PMC6613860 DOI: 10.14309/ctg.0000000000000032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
HLA class II allele, DRB1*03:01, is the most common genetic risk factor for autoimmune hepatitis (AIH), but other unrecognized HLA related risks exist.
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22
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Liang M, Liwen Z, Juan D, Yun Z, Yanbo D, Jianping C. Dysregulated TFR and TFH cells correlate with B-cell differentiation and antibody production in autoimmune hepatitis. J Cell Mol Med 2020; 24:3948-3957. [PMID: 32142205 PMCID: PMC7171413 DOI: 10.1111/jcmm.14997] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 10/14/2019] [Accepted: 11/22/2019] [Indexed: 12/12/2022] Open
Abstract
Follicular helper T (TFH) cell provides germinal centre (GC) B cell with critical signals for autoantibody production in the immunopathogenesis and progression of autoimmune hepatitis (AIH). However, the immunoregulatory functions of follicular regulatory T (TFR) cell in AIH are still unclear. The numbers of circulating TFR/TFH cells were measured in AIH patients. Moreover, we established experimental autoimmune hepatitis (EAH) model to examine the function of TFR cells on B‐cell differentiation and autoantibody production in vivo and vitro. AIH patients had significantly increased numbers of TFH cells and decreased numbers of TFR cells as well as imbalanced TFR/TFH‐type cytokines (IL‐10, TGF‐β1 and IL‐21) compared with healthy controls (HCs). In addition, TFR cell numbers negatively correlated with TFH cell numbers. Also, serum hypergammaglobulinaemia (IgG and IgM) concentration negatively correlated the levels of serum IL‐21, but positively correlated with the levels of serum IL‐10 in AIH patients. Furthermore, in comparison with control group, significantly higher frequencies of spleen TFR cells but lower frequencies of spleen TFH cells were detected in the EAH group. Further analysis found that TFR cells simultaneously express the phenotypic characteristics of Treg and TFH cells, but exercise as negative regulators of autoantibody production in vitro culture. Our findings demonstrated that dysregulated between TFR and TFH cells might cause excessive production of autoantibodies and destruction of the immune homeostasis, leading to the immunopathological process in AIH.
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Affiliation(s)
- Ma Liang
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhang Liwen
- Department of Pediatrics, The Second People's Hospital of Changzhou, Affiliate Hospital of NanJing medical University, Changzhou, China
| | - Dai Juan
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhuang Yun
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ding Yanbo
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Chen Jianping
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
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23
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de Boer YS, Gerussi A, van den Brand FF, Wong GW, Halliday N, Liberal R, Drenth JPH, Thorburn D, Bouma G, Heneghan MA. Association Between Black Race and Presentation and Liver-Related Outcomes of Patients With Autoimmune Hepatitis. Clin Gastroenterol Hepatol 2019; 17:1616-1624.e2. [PMID: 30471454 DOI: 10.1016/j.cgh.2018.11.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 11/01/2018] [Accepted: 11/06/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION & AIMS Small studies have found that black patients with autoimmune hepatitis (AIH) present with more aggressive disease. We aimed to characterize the presentation and outcome in black and white patients with AIH. METHODS We performed a retrospective study, collecting information from databases of patients with AIH attending the Institute of Liver studies at King's College Hospital, London (1971-October 2015, the Royal Free Hospital, London (1982 through December 2016) and the multicenter Dutch Autoimmune Hepatitis Study Group cohort (2006-August 2016). We identified 88 black patients with AIH and we compared their clinical characteristics and outcomes to 897 white patients with AIH. RESULTS Black patients presented at a younger age (median 38 years vs 45 years) (P = .007), had higher IgG levels (mean 31.0 mg/dL vs 27.5 mg/dL) (P = .04), but there were no significant differences between groups in auto-antibody profiles, International AIH Group scores, or sex distribution of disease. A higher proportion of black patients had systemic lupus erythematosus (10%) than white patients (2%) (P ≤ .001). There was no significant difference in proportions of patients with a response to standard therapy (86% for black patients vs 91% for white patients; P = .20) or in rate of relapse (57% vs 50%; P = .3). Despite this, black patients had an increased risk of liver transplantation and liver-related death (hazard ratio 2.4, 95% confidence interval, 1.4-4.0; P < .001). Overall mortality was similar between the two groups. CONCLUSION In a comparison of black and white patients with AIH in Europe, we found that black patients present at a younger age, have higher levels of IgG levels, and a greater proportion have SLE. We also found black patients to have a greater risk of liver transplantation and liver-related mortality, indicating more aggressive disease.
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Affiliation(s)
- Ynto S de Boer
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers - VU University Medical Center, Amsterdam, the Netherlands; Institute of Liver Studies, King's College Hospital, Denmark Hill, London, London, United Kingdom
| | - Alessio Gerussi
- Sheila Sherlock Liver Centre and UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, United Kingdom; Department of Medicine, University of Udine, Udine, Italy
| | - Floris F van den Brand
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers - VU University Medical Center, Amsterdam, the Netherlands
| | - Guan-Wee Wong
- Institute of Liver Studies, King's College Hospital, Denmark Hill, London, London, United Kingdom
| | - Neil Halliday
- Sheila Sherlock Liver Centre and UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, United Kingdom; Institute of Immunity and Transplantation, Division of Infection and Immunity, University College London, Royal Free Hospital, London, United Kingdom
| | - Rodrigo Liberal
- Institute of Liver Studies, King's College Hospital, Denmark Hill, London, London, United Kingdom
| | - Joost P H Drenth
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Douglas Thorburn
- Sheila Sherlock Liver Centre and UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, United Kingdom
| | - Gerd Bouma
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers - VU University Medical Center, Amsterdam, the Netherlands
| | - Michael A Heneghan
- Institute of Liver Studies, King's College Hospital, Denmark Hill, London, London, United Kingdom.
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24
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Jennings JJ, Mandaliya R, Nakshabandi A, Lewis JH. Hepatotoxicity induced by immune checkpoint inhibitors: a comprehensive review including current and alternative management strategies. Expert Opin Drug Metab Toxicol 2019; 15:231-244. [PMID: 30677306 DOI: 10.1080/17425255.2019.1574744] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Immune checkpoint inhibitors (ICIs) block cytotoxic T lymphocyte antigen 4 (CTLA-4) and programmed cell death protein 1 (PD-1)/PD ligand 1 (PD-L1) receptors that control antitumor activities of lymphocytes. While highly efficacious, these drugs have been associated with several immune-related adverse events (irAEs) due to the disruption of self-tolerance. Immune-mediated hepatitis (IMH) usually presents as mild elevations of liver enzymes though it can rarely be associated with life-threatening hepatic injury. Areas covered: A comprehensive review was performed to define the clinicopathologic forms of liver injury associated with ICIs, comparing the various ICI classes as well as comparing this form of IMH with idiopathic autoimmune hepatitis and drug-induced autoimmune hepatitis. Liver biopsy has proven very useful in selected patients. A specific form of fibrin ring granulomatous hepatitis appears to be associated with IMH. The current societal treatment algorithms and emerging data were reviewed to determine when to utilize corticosteroids. Expert opinion: Monitoring for severe ICI-IMH is recommended although acute liver failure remains rare. Most patients with grade 3-4 hepatotoxicity respond to corticosteroids, but a subset of patients with mild hepatitis on liver biopsy resolve without steroids and need to be carefully selected in concert with the consultation of a hepatologist.
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Affiliation(s)
- Joseph J Jennings
- a Department of Medicine, Division of Gastroenterology and Hepatology , MedStar Georgetown University Hospital , Washington , DC , USA
| | - Rohan Mandaliya
- a Department of Medicine, Division of Gastroenterology and Hepatology , MedStar Georgetown University Hospital , Washington , DC , USA
| | - Ahmad Nakshabandi
- b Department of Internal Medicine , Mercy Hospital and Medical Center , Chicago , IL , USA
| | - James H Lewis
- a Department of Medicine, Division of Gastroenterology and Hepatology , MedStar Georgetown University Hospital , Washington , DC , USA
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25
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Juvenile autoimmune hepatitis: A comprehensive review. J Autoimmun 2018; 95:69-76. [DOI: 10.1016/j.jaut.2018.10.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 10/13/2018] [Indexed: 12/12/2022]
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26
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Taubert R, Hupa-Breier KL, Jaeckel E, Manns MP. Novel therapeutic targets in autoimmune hepatitis. J Autoimmun 2018; 95:34-46. [DOI: 10.1016/j.jaut.2018.10.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 10/22/2018] [Indexed: 02/07/2023]
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27
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Taubert R, Diestelhorst J, Junge N, Kirstein MM, Pischke S, Vogel A, Bantel H, Baumann U, Manns MP, Wedemeyer H, Jaeckel E. Increased seroprevalence of HAV and parvovirus B19 in children and of HEV in adults at diagnosis of autoimmune hepatitis. Sci Rep 2018; 8:17452. [PMID: 30487523 PMCID: PMC6261942 DOI: 10.1038/s41598-018-35882-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 11/13/2018] [Indexed: 12/13/2022] Open
Abstract
Preceding viral infections have mostly been described in autoimmune hepatitis (AIH) in single cases. We aimed to identify viral infections that potentially trigger AIH, as suggested for hepatitis E virus (HEV) infections. Therefore, antibodies against hepatitis A (HAV), B, C and E viruses; hepatotropic herpesviruses; and parvovirus B19 (PVB19) were analyzed retrospectively in 219 AIH patients at diagnosis, 356 patients with other liver diseases and 89 children from our center. Untreated adult AIH (aAIH) patients showed higher anti-HEV seroprevalences at diagnosis than patients with other liver diseases. Untreated aAIH patients had no increased incidence of previous hepatitis A, B or C. Antibodies against hepatotropic herpesviruses in untreated AIH were in the range published for the normal population. Untreated pediatric AIH (pAIH) patients had evidence of more previous HAV and PVB19 infections than local age-matched controls. The genetic AIH risk factor HLA DRB1*03:01 was more frequent in younger patients, and DRB1*04:01 was more frequent in middle-aged patients without an obvious link to virus seropositivities. Pediatric and adult AIH seem to be distinct in terms of genetic risk factors and preceding viral infections. While associations cannot prove causal relations, the results suggest that hepatotropic virus infections could be involved in AIH pathogenesis.
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Affiliation(s)
- Richard Taubert
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.
| | - Jana Diestelhorst
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Pediatric Gastroenterology and Hepatology, Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, Hannover, Germany
| | - Norman Junge
- Pediatric Gastroenterology and Hepatology, Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, Hannover, Germany
| | - Martha M Kirstein
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Sven Pischke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Department of Internal Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Arndt Vogel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Heike Bantel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Ulrich Baumann
- Pediatric Gastroenterology and Hepatology, Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, Hannover, Germany
| | - Michael P Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Braunschweig, Germany.,Department of Gastroenterology and Hepatology, Essen University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Elmar Jaeckel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
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28
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Aljumah AA, Al Jarallah B, Albenmousa A, Al Khathlan A, Al Zanbagi A, Al Quaiz M, Al-Judaibi B, Nabrawi K, Al Hamoudi W, Alghamdi M, Fallatah H. The Saudi association for the study of liver diseases and transplantation clinical practice guidelines for management of autoimmune hepatitis. Saudi J Gastroenterol 2018; 24:S1-S20. [PMID: 30264737 PMCID: PMC6305081 DOI: 10.4103/sjg.sjg_159_18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Abdulrahman A. Aljumah
- Division of Hepatology, Hepatobiliary Sciences and Organ Transplant Center, King Abdulaziz Medical City and King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Badr Al Jarallah
- Department of Medicine, Division of Gastroenterology, Al Qassim University, Al Qassim, Saudi Arabia
| | - Ali Albenmousa
- Department of Gastroenterology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Abdullah Al Khathlan
- Department of Medicine, Division of Gastroenterology, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Adnan Al Zanbagi
- Department of Medicine, Division of Gastroenterology, King Abdullah Medical City, Makkah, Saudi Arabia
| | - Mohammed Al Quaiz
- Department of Medicine, Section of Gastroenterology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Bandar Al-Judaibi
- Department of Medicine, University of Rochester, Rochester City, New York State, USA
| | - Khalid Nabrawi
- Department of Internal Medicine, Aseer Central Hospital, Abha, Saudi Arabia
| | - Waleed Al Hamoudi
- Department of Medicine, Division of Gastroenterology, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Alghamdi
- Department of Internal Medicine, King Fahad Military Medical City, Dhahran, Saudi Arabia
| | - Hind Fallatah
- Department of Medicine, Division of Gastroenterology and Hepatology, King Abdulaziz University, Jeddah, Saudi Arabia
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29
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Identification of a Shared Cytochrome p4502E1 Epitope Found in Anesthetic Drug-Induced and Viral Hepatitis. mSphere 2018; 3:3/5/e00453-18. [PMID: 30305319 PMCID: PMC6180222 DOI: 10.1128/msphere.00453-18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Drug-induced hepatitis is the leading reason that an approved drug is removed from the commercial market. Halogenated anesthetics can induce hepatitis in susceptible persons, and cytochrome p4502E1 (CYP2E1) enzymes responsible for their metabolism induce antibodies in addition to hepatitis. CYP2E1 antibodies detected in anesthetic hepatitis patients have been detected in patients with viral hepatitis, suggesting that these different forms of hepatitis could develop immune reactions to a common segment or epitope of CYP2E1. We have found a common MHC-restricted CYP2E1 epitope in anesthetic and viral hepatitis that is a dominant epitope in anesthetic hepatitis and is significantly associated with fibrosis in patients with viral hepatitis. Along with conformational epitopes, our identification of MHC-restricted CYP2E1 epitopes can be used to develop specific diagnostic tests for drug-induced or viral hepatitis or associated fibrosis or to predict individuals at risk for developing these diseases or their sequelae. Cytochrome p4502E1 (CYP2E1) autoantibodies are biomarkers for drug-induced hepatitis and chronic hepatitis C. However, major histocompatibility-restricted CYP2E1 epitopes associated with these diseases have not been identified. We hypothesized that CYP2E1 epitopes associated with different types of hepatitis may be shared and may impact immune responses and metabolism. SYFPEITHI epitope prediction identified CYP2E1 candidate epitopes that would be recognized by MHC II haplotypes. Candidate epitopes were tested for induction of hepatitis and CYP2E1 autoantibodies in mice and recognition by sera from patients with anesthetic drug-induced and viral hepatitis. Human liver cells treated with epitope hybridoma serum were analyzed for mitochondrial stress. CYP2E1 activity was measured in human microsomes similarly treated. Epitope antibodies in viral hepatitis sera were analyzed using linear regression to uncover associations with liver pathology. A P value of <0.05 was considered significant. One epitope (Gly113-Leu135) induced hepatitis and CYP2E1 autoantibodies in mice after modification of Lys123 (P < 0.05). Gly113-Leu135 antiserum recognized mitochondria and endoplasmic reticula (P < 0.05), upregulated HSP27 (P < 0.01) and mitochondrial oxidative stress via complex 1 inhibition (P < 0.001), and inhibited CYP2E1 activity. Gly113-Leu135 IgG4 detected in viral hepatitis sera was associated with severe hepatic fibrosis (P = 0.0142). We found a novel CYP2E1 epitope that was detected in anesthetic and viral hepatitis and that triggered hepatitis in mice. Our findings may improve understanding of hepatic immune responses triggered by metabolism or viruses. IMPORTANCE Drug-induced hepatitis is the leading reason that an approved drug is removed from the commercial market. Halogenated anesthetics can induce hepatitis in susceptible persons, and cytochrome p4502E1 (CYP2E1) enzymes responsible for their metabolism induce antibodies in addition to hepatitis. CYP2E1 antibodies detected in anesthetic hepatitis patients have been detected in patients with viral hepatitis, suggesting that these different forms of hepatitis could develop immune reactions to a common segment or epitope of CYP2E1. We have found a common MHC-restricted CYP2E1 epitope in anesthetic and viral hepatitis that is a dominant epitope in anesthetic hepatitis and is significantly associated with fibrosis in patients with viral hepatitis. Along with conformational epitopes, our identification of MHC-restricted CYP2E1 epitopes can be used to develop specific diagnostic tests for drug-induced or viral hepatitis or associated fibrosis or to predict individuals at risk for developing these diseases or their sequelae.
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30
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Serum Levels of IL-33 and Correlation with IL-4, IL-17A, and Hypergammaglobulinemia in Patients with Autoimmune Hepatitis. Mediators Inflamm 2018; 2018:7964654. [PMID: 30034292 PMCID: PMC6035854 DOI: 10.1155/2018/7964654] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 05/09/2018] [Accepted: 05/27/2018] [Indexed: 02/06/2023] Open
Abstract
This study investigated the role of IL-33 in the pathogenesis of autoimmune hepatitis (AIH). The levels of IL-33/sST2 and Th1/Th2/Th17-type cytokines were determined by enzyme-linked immunosorbent assay in serum samples obtained from 30 AIH patients and 20 healthy controls (HCs). In addition, a murine model of experimental AIH (EAIH) was established to investigate the role of IL-33 in disease progression. The serum levels of IL-33, sST2, Th17 cytokines (IL-17A), Th1 cytokines (IFN-γ, TNF-α), and Th2 cytokines (IL-4) were significantly elevated in AIH patients compared to HCs. Following immunosuppression therapy, serum levels of IL-33 and sST2 were significantly decreased. Additionally, the serum levels of IL-33 in AIH patients were correlated positively with markers of hypergammaglobulinemia (IgG, IgM, and IgA) and liver injury (γ-GT/ALP). Also, the serum levels of IL-33 in AIH patients were correlated positively with proinflammatory cytokine levels (IL-17A and IL-4). Interestingly, treatment of EAIH mice with a specific IL-33 neutralizing antibody significantly reversed the increasing trend in serum ALT/AST and inhibited the production of the type 2 (IL-4) and type 17 cytokines (IL-17) but not the type 1 cytokine (IFN-γ). Our findings highlight the possible role of the IL-33/sST2 axis in the progression of AIH, opening a new door for developing a novel therapeutic strategy for AIH.
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31
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Suzman DL, Pelosof L, Rosenberg A, Avigan MI. Hepatotoxicity of immune checkpoint inhibitors: An evolving picture of risk associated with a vital class of immunotherapy agents. Liver Int 2018; 38:976-987. [PMID: 29603856 DOI: 10.1111/liv.13746] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 03/21/2018] [Indexed: 12/13/2022]
Abstract
Immune checkpoint inhibitors (ICIs) block CTLA-4, PD-1 and PD-L1, or other molecules that control antitumour activities of lymphocytes. These products are associated with a broad array of immune-related toxicities affecting a variety of organs, including the liver. ICI-associated immune-mediated hepatitis (IMH) ranges in severity between mild and life-threatening and is marked by findings that bear both similarities as well as differences with idiopathic autoimmune hepatitis. Hepatotoxic events are often detected in clinical trials of ICIs that are powered for efficacy. Risk levels for ICI-induced liver injury may be impacted by the specific checkpoint molecule targeted for treatment, the ICI dose levels, and the presence of a pre-existing autoimmune diathesis, chronic infection or tumour cells which infiltrate the liver parenchyma. When patients develop liver injury during ICI treatment, a prompt assessment of the cause of injury, in conjunction with the application of measures to optimally manage the adverse event, should be made. Strategies to manage the risk of IMH include the performance of pretreatment liver tests with regular monitoring during and after ICI treatment and patient education. Using Common Terminology Criteria for Adverse Events developed at the National Cancer Institute to measure the severity level of liver injury, recommended actions may include continued ICI treatment with close patient monitoring, ICI treatment suspension or discontinuation and/or administration of corticosteroids or, when necessary, a non-steroidal immunosuppressive agent. The elucidation of reliable predictors of tumour-specific ICI treatment responses, as well as an increased susceptibility for clinically serious immune-related adverse events, would help optimize treatment decisions for individual patients.
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Affiliation(s)
- Daniel L Suzman
- Office of Hematology and Oncology Products, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Lorraine Pelosof
- Office of Hematology and Oncology Products, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Amy Rosenberg
- Office of Biotechnology Products, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Mark I Avigan
- Office of Surveillance and Epidemiology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
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32
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Mieli-Vergani G, Vergani D, Czaja AJ, Manns MP, Krawitt EL, Vierling JM, Lohse AW, Montano-Loza AJ. Autoimmune hepatitis. Nat Rev Dis Primers 2018; 4:18017. [PMID: 29644994 DOI: 10.1038/nrdp.2018.17] [Citation(s) in RCA: 230] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Autoimmune hepatitis (AIH) is a severe liver disease that affects children and adults worldwide. The diagnosis of AIH relies on increased serum transaminase and immunoglobulin G levels, presence of autoantibodies and interface hepatitis on liver histology. AIH arises in genetically predisposed individuals when a trigger, such as exposure to a virus, leads to a T cell-mediated autoimmune response directed against liver autoantigens; this immune response is permitted by inadequate regulatory immune control leading to a loss of tolerance. AIH responds favourably to immunosuppressive treatment, which should be started as soon as the diagnosis is made. Standard regimens include fairly high initial doses of corticosteroids (prednisone or prednisolone), which are tapered gradually as azathioprine is introduced. For those patients who do not respond to standard treatment, second-line drugs should be considered, including mycophenolate mofetil, calcineurin inhibitors, mechanistic target of rapamycin (mTOR) inhibitors and biologic agents, which should be administered only in specialized hepatology centres. Liver transplantation is a life-saving option for those who progress to end-stage liver disease, although AIH can recur or develop de novo after transplantation. In-depth investigation of immune pathways and analysis of changes to the intestinal microbiota should advance our knowledge of the pathogenesis of AIH and lead to novel, tailored and better tolerated therapies.
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Affiliation(s)
- Giorgina Mieli-Vergani
- Paediatric Liver, GI and Nutrition Centre, MowatLabs, King's College Hospital, Denmark Hill, SE5 9RS London, UK
| | - Diego Vergani
- Institute of Liver Studies, MowatLabs, King's College Hospital, Denmark Hill, SE5 9RS London, UK
| | - Albert J Czaja
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Michael P Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - Edward L Krawitt
- Department of Medicine, University of Vermont, Burlington, VT, USA.,Department of Medicine, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - John M Vierling
- Division of Abdominal Transplantation and Section of Gastroenterology and Hepatology, Departments of Medicine and Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Ansgar W Lohse
- Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Aldo J Montano-Loza
- Division of Gastroenterology and Liver Unit, University of Alberta, Edmonton, Alberta, Canada
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Wang Y, Zhou L, Li Y, Guo L, Zhou Z, Xie H, Hou Y, Wang B. The Effects of Berberine on Concanavalin A-Induced Autoimmune Hepatitis (AIH) in Mice and the Adenosine 5'-Monophosphate (AMP)-Activated Protein Kinase (AMPK) Pathway. Med Sci Monit 2017; 23:6150-6161. [PMID: 29283990 PMCID: PMC5753750 DOI: 10.12659/msm.907377] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Background Berberine, a herbal extract, has been reported to protect against inflammatory disorders. The adenosine 5′-monophosphate (AMP)-activated protein kinase (AMPK) signaling pathway can be activated by berberine and inhibited by the synthetic, reversible AMP-competitive inhibitor, Compound C. The aim of this study was to investigate the effects of berberine on concanavalin A (Con A)-induced autoimmune hepatitis (AIH) in mice via the AMPK pathway. Material/Methods BALB/c mice were treated with berberine, with or without Compound C, followed by treatment with Con A. Serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were measured. Liver tissue histology was performed to evaluate hepatic injury and AIH. Cytokine levels in serum and hepatic tissue were measured by enzyme-linked immunoassay (ELISA) and used quantitative polymerase chain reaction (qPCR). Levels of phosphorylated acetyl coenzyme-A carboxylase (ACC), representing AMPK activation, were detected by Western blotting. Results Serum ALT and AST levels were significantly reduced by berberine (100 and 200 mg/kg/day) in mice with Con A-induced hepatitis. Berberine also reduced Con A-induced hepatocyte swelling, cell death, and infiltration of leukocytes. Serum levels of tumor necrosis factor (TNF)-alpha, interferon (IF)-gamma, interleukin (IL)-2, and IL-1beta were reduced by berberine pre-treatment; levels of serum IL-10, an anti-inflammatory cytokine, was elevated. These protective effects of berberine on Con-A-induced AIH were reversed by treatment with Compound C. Conclusions In a murine model of Con A-induced AIH, berberine treatment reduced hepatic injury via activation of the AMPK pathway. Further studies are recommended to determine the potential therapeutic role for berberine in AIH.
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Affiliation(s)
- Yangyang Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China (mainland).,Department of Gastroenterology, Affiliated Hospital of Hebei University, Baoding, Hebei, China (mainland)
| | - Lu Zhou
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Yanni Li
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Liping Guo
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Zhe Zhou
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China (mainland)
| | - Haoran Xie
- College of Medicine, Hebei University, Baoding, Hebei, China (mainland)
| | - Yingjian Hou
- College of Medicine, Hebei University, Baoding, Hebei, China (mainland)
| | - Bangmao Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China (mainland)
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Chaouali M, Kochkar R, Messadi A, Tezeghdenti A, Azaiez MB, Abdallah HB, Yacoubi-Oueslati B, Ghazouani E. Distribution of HLA-DRB1/DQB1 alleles and DRB1-DQB1 haplotypes among Tunisian patients with autoimmune hepatitis. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2017. [DOI: 10.1016/j.ejmhg.2017.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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The influence of genetic predisposition and autoimmune hepatitis inducing antigens in disease development. J Autoimmun 2017; 78:39-45. [DOI: 10.1016/j.jaut.2016.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 11/07/2016] [Accepted: 12/04/2016] [Indexed: 12/31/2022]
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Yousefi A, Mahmoudi E, Zare Bidoki A, Najmi Varzaneh F, Baradaran Noveiry B, Sadr M, Motamed F, Najafi M, Farahmand F, Rezaei N. IL4 gene polymorphisms in Iranian patients with autoimmune hepatitis. Expert Rev Gastroenterol Hepatol 2017; 10:659-63. [PMID: 26735262 DOI: 10.1586/17474124.2016.1139449] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a chronic long-lasting hepatocellular inflammation associated with circulating auto antibodies. In addition to the genetic component, several cytokines have been implicated to be involved in AIH. This study was performed to investigate potential associations of AIH with IL4 gene variants. METHOD The studied alleles and genotypes included: IL4G/T allele polymorphisms at position -1098 and C/T allele polymorphisms at two positions (-33 and -590) on the IL4 gene, in addition to the A/G allele polymorphisms at position +1902 on the IL4RA gene. RESULT The IL4 C allele and CC genotype at position -590 and TT genotype at position -33 had a significantly higher frequency in AIH patients. CONCLUSION This study identified the IL4 C allele and CC genotype susceptibility gene in AIH, which will provide better insights into the mechanisms of AIH and potential therapeutic interventions.
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Affiliation(s)
- Azizollah Yousefi
- a Department of Gastroenterology, Children's Medical Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Elham Mahmoudi
- b Molecular Immunology Research Center; Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Alireza Zare Bidoki
- c Thrombosis Hemostasis Research Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Farnaz Najmi Varzaneh
- b Molecular Immunology Research Center; Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,d Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) , Universal Scientific Education and Research Network (USERN) , Tehran , Iran
| | - Behnoud Baradaran Noveiry
- b Molecular Immunology Research Center; Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,d Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) , Universal Scientific Education and Research Network (USERN) , Tehran , Iran
| | - Maryam Sadr
- b Molecular Immunology Research Center; Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Farzaneh Motamed
- a Department of Gastroenterology, Children's Medical Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Mehri Najafi
- a Department of Gastroenterology, Children's Medical Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Fatemeh Farahmand
- a Department of Gastroenterology, Children's Medical Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Nima Rezaei
- b Molecular Immunology Research Center; Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,d Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) , Universal Scientific Education and Research Network (USERN) , Tehran , Iran.,e Research Center for Immunodeficiencies, Children's Medical Center , Tehran University of Medical Sciences , Tehran , Iran
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de Boer YS, Kosinski AS, Urban TJ, Zhao Z, Long N, Chalasani N, Kleiner DE, Hoofnagle JH. Features of Autoimmune Hepatitis in Patients With Drug-induced Liver Injury. Clin Gastroenterol Hepatol 2017; 15:103-112.e2. [PMID: 27311619 PMCID: PMC5370577 DOI: 10.1016/j.cgh.2016.05.043] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/23/2016] [Accepted: 05/27/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Drug-induced liver injury (DILI) has features similar to those of other liver diseases including autoimmune hepatitis (AIH). We aimed to characterize the clinical and autoimmune features of liver injury caused by nitrofurantoin, minocycline, methyldopa, or hydralazine. METHODS We analyzed data from 88 cases of DILI attributed to nitrofurantoin, minocycline, methyldopa, or hydralazine included in the Drug-Induced Liver Injury Network prospective study from 2004 through 2014. Sera were collected from patients at baseline and follow-up examination and tested for levels of immunoglobulin G (IgG), antibodies to nuclear antigen (ANA), smooth muscle (SMA), and soluble liver antigen (SLA). An autoimmune score was derived on the basis of increases in levels of IgG, ANA, SMA, and SLA (assigned values of 0, 1+, or 2+). AIH-associated HLA-DRB1*03:01 and HLA-DRB1*04:01 allele frequencies were compared with those of the general population (controls). RESULTS Of the 88 cases, 80 were women (91%), 74% had hepatocellular injury, and 25% had severe injury. At the onset of DILI, 39% of cases had increased levels of IgG, 72% had increased levels of ANA, 60% had increased levels of SMA, and none had increases in SLA. A phenotype of autoimmunity (autoimmune score ≥2) was observed in 82% of cases attributed to nitrofurantoin and 73% of cases attributed to minocycline (73%) but only 55% of cases attributed to methyldopa and 43% of cases attributed to hydralazine (P = .16 for nitrofurantoin and minocycline vs methyldopa and hydralazine). We observed a decrease in numbers of serum samples positive for ANA (P = .01) or SMA (P < .001) and in autoimmune scores (P < .001) between DILI onset and follow-up. Similar percentages of patients with DILI had HLA-DRB1*03:01 (15%) and HLA-DRB1*04:01 (9%) as controls (12% and 9%, respectively). CONCLUSIONS In analysis of data from the DILIN prospective study, we found that most cases of DILI attributed to nitrofurantoin or minocycline and about half of cases that were due to methyldopa and hydralazine have a phenotype of autoimmunity similar to AIH. These features decrease with recovery of the injury and are not associated with the typical HLA alleles found in patients with idiopathic AIH.
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Affiliation(s)
- Ynto S de Boer
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland; Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands.
| | | | - Thomas J Urban
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina, Chapel Hill, North Carolina
| | - Zhen Zhao
- Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Nanye Long
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina, Chapel Hill, North Carolina
| | - Naga Chalasani
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana
| | - David E Kleiner
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Jay H Hoofnagle
- Liver Disease Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
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Liberal R, Krawitt EL, Vierling JM, Manns MP, Mieli-Vergani G, Vergani D. Cutting edge issues in autoimmune hepatitis. J Autoimmun 2016; 75:6-19. [PMID: 27502148 DOI: 10.1016/j.jaut.2016.07.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/06/2016] [Accepted: 07/10/2016] [Indexed: 12/14/2022]
Abstract
Autoimmune hepatitis (AIH) is a severe liver disease affecting all age groups worldwide. Novel basic and clinical aspects of AIH, addressed at a Monothematic Conference in London in September 2015, are highlighted in this review. The diagnosis of AIH relies upon detection of characteristic autoantibodies, hypergammaglobulinemia, and interface hepatitis on liver histology. The International Autoimmune Hepatitis Group (IAIHG) has devised diagnostic scoring systems to help in comparative studies and clinical practice. AIH arises in a genetically predisposed host, when yet unknown triggers - such an encounter with a pathogen - lead to a T cell-mediated immune response targeting liver autoantigens. This immune response is inadequately controlled because regulatory mechanisms are impaired. The mainstay of treatment for AIH is immunosuppression, which should be instituted as soon as the diagnosis is made. Standard treatment regimens include relatively high doses of predniso(lo)ne, which are tapered gradually as azathioprine is introduced. Recent guidelines have described newer treatment regimens and have tightened the goal of therapy to complete normalization of biochemical, serological and histological parameters. Mycophenolate mofetil, calcineurin inhibitors, mTOR inhibitors and biological agents are potential salvage therapies, but should be reserved for selected non-responsive patients and administered only in experienced centers. Liver transplantation is a life-saving option for those patients who progress to end-stage liver disease. Further dissection of cellular and molecular pathways involved in AIH pathogenesis is likely to lead to the discovery of novel, tailored and better tolerated therapies.
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Affiliation(s)
- Rodrigo Liberal
- Institute of Liver Studies, King's College Hospital, London, UK
| | - Edward L Krawitt
- Department of Medicine, Dartmouth College, Hanover, NH, USA; Department of Medicine, University of Vermont, Burlington, VT, USA
| | - John M Vierling
- Departments of Medicine and Surgery, Baylor College of Medicine, Baylor-St Luke's Medical Center, Houston, TX, USA
| | | | - Giorgina Mieli-Vergani
- Institute of Liver Studies, King's College Hospital, London, UK; Paediatric Liver, GI & Nutrition Centre, King's College Hospital, London, UK
| | - Diego Vergani
- Institute of Liver Studies, King's College Hospital, London, UK.
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Specific HLA genotypes confer susceptibility to acute necrotizing encephalopathy. Genes Immun 2016; 17:367-9. [DOI: 10.1038/gene.2016.32] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 06/21/2016] [Accepted: 06/23/2016] [Indexed: 11/09/2022]
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Environmental Risk Factors of Pediatric-Onset Primary Sclerosing Cholangitis and Autoimmune Hepatitis. J Pediatr Gastroenterol Nutr 2016; 62:437-42. [PMID: 26465796 DOI: 10.1097/mpg.0000000000000995] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVES The aim of this population-based observational case-control questionnaire study was to investigate the possible role of environmental risk factors associated with pediatric-onset autoimmune liver diseases. METHODS Seventy-one patients with autoimmune liver diseases (<16 years) received a questionnaire with 22 items, evaluating contact with environmental factors (eg, family manners, type of housing, pets) before the diagnosis. Two age- and sex-matched control groups were used: inflammatory bowel disease (IBD; n = 91) and healthy subjects (n = 716; matched also for place of residence at birth). Univariate analysis (odds ratio [OR] and 95% confidence interval) for all variables was calculated. Fisher exact test was performed to depict associations between variables and the multivariate logistic regression to test their interactions. RESULTS In the final analyses, the responses of 51 autoimmune liver diseases cases (n = 51/71, 72%), 59 IBD controls (n = 59/91, 65%), and 292 healthy controls (n = 292/716, 41%) were investigated. In univariate analysis only having a cat, a dog, and a cat or a dog were risk factors of autoimmune liver diseases (OR varying between 2.6-3.4); no other significant associations (eg, place of residence, number of siblings, family manners) were found. Multivariate logistic regression analyses showed that especially living with a cat in block of flats was a risk factor (OR 3.6, 1.2-10.8). CONCLUSIONS Living in a close contact with a pet (especially a cat) was a risk factor of autoimmune liver diseases. This finding may suggest an involvement of an unidentified agent (ie, toxin/microbe) among the triggers of these diseases.
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Maeda Y, Migita K, Higuchi O, Mukaino A, Furukawa H, Komori A, Nakamura M, Hashimoto S, Nagaoka S, Abiru S, Yatsuhashi H, Matsuo H, Kawakami A, Yasunami M, Nakane S. Association between Anti-Ganglionic Nicotinic Acetylcholine Receptor (gAChR) Antibodies and HLA-DRB1 Alleles in the Japanese Population. PLoS One 2016; 11:e0146048. [PMID: 26807576 PMCID: PMC4726510 DOI: 10.1371/journal.pone.0146048] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 11/24/2015] [Indexed: 11/25/2022] Open
Abstract
Background/Aims Anti-ganglionic nicotinic acetylcholine receptor (gAChR) antibodies are observed in autoimmune diseases, as well as in patients with autoimmune autonomic ganglionopathy. However, the genetic background of anti-gAChR antibodies is unclear. Here, we investigated HLA alleles in autoimmune hepatitis (AIH) patients with or without anti-gAChR antibodies. Methodology/Principal Findings Genomic DNA from 260 patients with type-1 autoimmune hepatitis (AIH) were genotyped for HLA-A, B, DRB1, and DQB1 loci. Anti-gAChR antibodies in the sera form AIH patients were measured using the luciferase immunoprecipitation system, and examined allelic association in patients with or without anti-gAChR antibodies. Methodology/ Methods We detected anti-α3 or -β4 gAChR antibodies in 11.5% (30/260) of patients with AIH. Among AIH patients there was no significant association between HLA-A, B DQB1 alleles and the positivity for anti-gAChR antibodies. Whereas the HLA-DRB1*0403 allele showed a significantly increased frequency in AIH patients with anti-gAChR antibodies compared with those without anti-gAChR antibodies. Conclusions/Significance The frequency of the HLA-DRB1*0403 allele differed among Japanese patients with AIH according to the presence or absence of anti-gAChR antibodies. Our findings suggest that particular HLA class II molecules might control the development of anti-gAChR antibodies in the autoimmune response to gAChR.
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Affiliation(s)
- Yasuhiro Maeda
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Kawatana, Nagasaki, Japan.,Department of Neuroimmunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kiyoshi Migita
- Clinical Research Center, NHO Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Osamu Higuchi
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Kawatana, Nagasaki, Japan
| | - Akihiro Mukaino
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Kawatana, Nagasaki, Japan
| | - Hiroshi Furukawa
- Department of Molecular and Genetic Epidemiology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Atsumasa Komori
- Clinical Research Center, NHO Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Minoru Nakamura
- Department of Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Nagasaki, Japan
| | - Satoru Hashimoto
- Clinical Research Center, NHO Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Shinya Nagaoka
- Clinical Research Center, NHO Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Seigo Abiru
- Clinical Research Center, NHO Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Hiroshi Yatsuhashi
- Clinical Research Center, NHO Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Hidenori Matsuo
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Kawatana, Nagasaki, Japan
| | - Atsushi Kawakami
- First Department of Internal Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Nagasaki, Japan
| | - Michio Yasunami
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Nagasaki, Japan
| | - Shunya Nakane
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
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Baharlou R, Faghihi-Kashani A, Faraji F, Najafi-Samei M, Setareh M, Zamani F, Tajik N. HLA-DRB1 alleles of susceptibility and protection in Iranians with autoimmune hepatitis. Hum Immunol 2016; 77:330-5. [PMID: 26780502 DOI: 10.1016/j.humimm.2016.01.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 11/03/2015] [Accepted: 01/07/2016] [Indexed: 01/20/2023]
Abstract
Autoimmune hepatitis (AIH) is an uncommon autoimmune liver disease of unknown etiology. The aim of this study was to determine the frequency of HLA-DRB1 alleles in Iranian patients with AIH and investigate the association between HLA alleles and the different types of the disease. Fifty-four AIH patients and 100 age- and sex-matched healthy controls were subjected to low resolution HLA-DRB typing performed by polymerase chain reaction-sequence-specific primers (PCR-SSP) technique. The results revealed higher frequencies of HLA-DRB1(∗)03, and DRB1(∗)13 alleles in patients with AIH compared to controls. However, DRB1(∗)11 was less frequent in AIH patients. In type I AIH patients HLA-DRB1(∗)03, HLA-DRB1(∗)04, HLA-DRB1(∗)08, and HLA-DRB1(∗)13 were the most frequent alleles. While in type II, the most frequent alleles were HLA-DRB1(∗)07 and HLA-DRB1(∗)13. The seronegative patients showed more frequency of HLA-DRB1(∗)03 and HLA-DRB3. In contrary, the frequency of HLA-DRB1(∗)11, HLA-DRB1(∗)15 and HLA-DRB5 in type 1 was less than healthy individuals. These findings indicate the role of HLA-DRB haplotypes in AIH susceptibility and protection, in the Iranian population.
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Affiliation(s)
- Rasoul Baharlou
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran; Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
| | - Amirhossein Faghihi-Kashani
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Faraji
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
| | | | - Masoumeh Setareh
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Farhad Zamani
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Nader Tajik
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran.
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Migita K, Jiuchi Y, Furukawa H, Nakamura M, Komori A, Yasunami M, Kozuru H, Abiru S, Yamasaki K, Nagaoka S, Hashimoto S, Bekki S, Yoshizawa K, Shimada M, Kouno H, Kamitsukasa H, Komatsu T, Hijioka T, Nakamuta M, Naganuma A, Yamashita H, Nishimura H, Ohta H, Nakamura Y, Ario K, Oohara Y, Sugi K, Tomizawa M, Sato T, Takahashi H, Muro T, Makita F, Mita E, Sakai H, Yatsuhashi H. Lack of association between the CARD10 rs6000782 polymorphism and type 1 autoimmune hepatitis in a Japanese population. BMC Res Notes 2015; 8:777. [PMID: 26652023 PMCID: PMC4677039 DOI: 10.1186/s13104-015-1733-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 11/23/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Previous genome-wide association studies have evaluated the impact of common genetic variants and identified several non-HLA risk loci associated with autoimmune liver diseases. More recent genome-wide association studies and replication analyses reported an association between variants of the CARD10 polymorphism rs6000782 and risk of type 1 autoimmune hepatitis (AIH). In this case-control study, we genotyped 326 Japanese AIH patients and 214 control subjects. RESULTS Genomic DNA from 540 individuals of Japanese origin, including 326 patients with type-1 AIH and 214 healthy controls, was analyzed for two single nucleotide polymorphisms (SNPs) in the CARD10 gene. We selected CARD10 rs6000782 SNPs and genotyped these using PCR-RFLP method and direct sequencing. The Chi square test revealed that the rs6000782 variant alle (c) was not associated with the susceptibility for AIH in a Japanese population [p = 0.376, odds ratio (OR) 1.271, 95 % confidence interval (CI) 0.747-2.161] in an allele model. Our data also showed that CARD10 rs6000782 variants were not associated with AIH or with the clinical parameters of AIH. CONCLUSIONS In this study we examined an association between rs6000782 SNPs in the CARD10 gene and type-1 AIH. Results showed no significant association of rs62000782 with type-1 AIH in a Japanese population. This study demonstrated no association between CARD10 rs6000782 variants and AIH in a Japanese population.
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Affiliation(s)
- Kiyoshi Migita
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan. .,Clinical Research Center, NHO Nagasaki Medical Center, Kubara 2-1001-1, Omura, 856-8652, Japan.
| | - Yuka Jiuchi
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hiroshi Furukawa
- Department of Rheumatology, NHO Sagamihara Hospital, Minamikusakuradai 18-1, Sagamihara, Kanagawa, 252-0392, Japan.
| | - Minoru Nakamura
- Department of Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-12-4, Ngasaki, Nagasaki, 852-8523, Japan.
| | - Atsumasa Komori
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Michio Yasunami
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Sakamoto 1-12-4, Ngasaki, Nagasaki, 852-8523, Japan.
| | - Hideko Kozuru
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Seigo Abiru
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Kazumi Yamasaki
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Shinya Nagaoka
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Satoru Hashimoto
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Shigemune Bekki
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Kaname Yoshizawa
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Masaaki Shimada
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hiroshi Kouno
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hiroshi Kamitsukasa
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Tatsuji Komatsu
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Taizo Hijioka
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Makoto Nakamuta
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Atsushi Naganuma
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Haruhiro Yamashita
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hideo Nishimura
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hajime Ohta
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Yoko Nakamura
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Keisuke Ario
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Yukio Oohara
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Kazuhiro Sugi
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Minoru Tomizawa
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Takeaki Sato
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hironao Takahashi
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Toyokichi Muro
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Fujio Makita
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Eiji Mita
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hironori Sakai
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
| | - Hiroshi Yatsuhashi
- NHO-AIH study group, Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki, 856-8562, Japan.
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Sonntag K, Eckert F, Welker C, Müller H, Müller F, Zips D, Sipos B, Klein R, Blank G, Feuchtinger T, Schumm M, Handgretinger R, Schilbach K. Chronic graft-versus-host-disease in CD34(+)-humanized NSG mice is associated with human susceptibility HLA haplotypes for autoimmune disease. J Autoimmun 2015; 62:55-66. [PMID: 26143958 DOI: 10.1016/j.jaut.2015.06.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 05/27/2015] [Accepted: 06/07/2015] [Indexed: 11/26/2022]
Abstract
Chronic graft-versus-host disease (cGVHD) is a significant hurdle to long-term hematopoietic stem-cell transplantation success. Insights into the pathogenesis and mechanistical investigations of novel therapeutic strategies are limited as appropriate animal models are missing. The immunodeficient NSG mouse - when humanized with human bone marrow, fetal liver and thymus (BLT NSG) - is prone for cGVHD, yet mainly affects the skin. In contrast, the NSG mouse humanized exclusively with CD34(+)-selected, CD3(+)-depleted stem cells (CD34(+)NSG) has neither been described for acute nor chronic GVHD so far. This is the first report about the development of systemic autoimmune cGVHD ≥24 weeks post stem cell receipt involving lung, liver, skin, gingiva and intestine in two NSG cohorts humanized with CD34(+) grafts from different donors. Affected mice presented with sclerodermatous skin, fibrotic lung, severe hepatitis, and massive dental malformation/loss. CD4(+)-dominated, TH2-biased, bulky T-cell infiltrates featured highly skewed T cell receptor (TCR) repertoires, clonal expansions, and autoreactive TCRs. In affected tissues profibrotic IL-13 and -4 dominated over TH1 cytokines IFN-γ and TNF-α. Thus, the time point of manifestation and the phenotype match human systemic pleiotropic sclerodermatous GVHD. The CD34(+)NSG-model's intrinsic deficiency of thymus, thymus-derived regulatory T cells (nTreg) and B cells emphasizes the role of the genetic polymorphism and the cytokines in the pathogenesis of cGVHD. Importantly, the only factor discriminating diseased versus non-diseased CD34(+)NSG cohorts were two risk HLA haplotypes that in human mediate susceptibility for autoimmune disease (psoriasis). Thus, the CD34(+)NSG model may serve as a platform for addressing issues related to the pathophysiology and treatment of human autoimmunity and chronic GVHD.
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Affiliation(s)
- Katja Sonntag
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Franziska Eckert
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany; Department of Radiation Oncology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 3, 72076 Tübingen, Germany
| | - Christian Welker
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Hartmut Müller
- Institute of Pathology, Eberhard Karls University Tübingen, Liebermeisterstraße 8, 72076 Tübingen, Germany
| | - Friederike Müller
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Daniel Zips
- Department of Radiation Oncology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 3, 72076 Tübingen, Germany
| | - Bence Sipos
- Institute of Pathology, Eberhard Karls University Tübingen, Liebermeisterstraße 8, 72076 Tübingen, Germany
| | - Reinhild Klein
- Laboratory for Immunopathology, Eberhard Karls University Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
| | - Gregor Blank
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Tobias Feuchtinger
- Pediatric Hematology, Oncology and Stem Cell Transplantation Dr. von Hauner'sches Kinderspital, Ludwig-Maximilian-University Munich, Lindwurmstraße 4, 80337 München, Germany
| | - Michael Schumm
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Rupert Handgretinger
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Karin Schilbach
- Department of General Pediatrics, Oncology/Hematology, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany.
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HLA-DRB1*03:01 and HLA-DRB1*04:01 modify the presentation and outcome in autoimmune hepatitis type-1. Genes Immun 2015; 16:247-52. [PMID: 25611558 DOI: 10.1038/gene.2014.82] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 12/16/2014] [Accepted: 12/16/2014] [Indexed: 12/20/2022]
Abstract
The classical human leukocyte antigen (HLA)-DRB1*03:01 and HLA-DRB1*04:01 alleles are established autoimmune hepatitis (AIH) risk alleles. To study the immune-modifying effect of these alleles, we imputed the genotypes from genome-wide association data in 649 Dutch AIH type-1 patients. We therefore compared the international AIH group (IAIHG) diagnostic scores as well as the underlying clinical characteristics between patients positive and negative for these HLA alleles. Seventy-five percent of the AIH patients were HLA-DRB1*03:01/HLA-DRB1*04:01 positive. HLA-DRB1*03:01/HLA-DRB1*04:01-positive patients had a higher median IAIHG score than HLA-DRB1*03:01/HLA-DRB1*04:01-negative patients (P<0.001). We did not observe associations between HLA alleles and alanine transaminase levels (HLA-DRB1*03:01: P=0.2; HLA-DRB1*04:01; P=0.5); however, HLA-DRB1*03:01 was independently associated with higher immunoglobulin G levels (P=0.04). The HLA-DRB1*04:01 allele was independently associated with presentation at older age (P=0.03) and a female predominance (P=0.04). HLA-DRB1*03:01-positive patients received immunosuppressive medication and liver transplantation. In conclusion, the HLA-DRB1*03:01 and HLA-DRB1*04:01 alleles are both independently associated with the aggregate diagnostic IAIHG score in type-1 AIH patients, but are not essential for AIH development. HLA-DRB1*03:01 is the strongest genetic modifier of disease severity in AIH.
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Alexandropoulos K, Bonito AJ, Weinstein EG, Herbin O. Medullary thymic epithelial cells and central tolerance in autoimmune hepatitis development: novel perspective from a new mouse model. Int J Mol Sci 2015; 16:1980-2000. [PMID: 25603179 PMCID: PMC4307344 DOI: 10.3390/ijms16011980] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/07/2015] [Indexed: 02/07/2023] Open
Abstract
Autoimmune hepatitis (AIH) is an immune-mediated disorder that affects the liver parenchyma. Diagnosis usually occurs at the later stages of the disease, complicating efforts towards understanding the causes of disease development. While animal models are useful for studying the etiology of autoimmune disorders, most of the existing animal models of AIH do not recapitulate the chronic course of the human condition. In addition, approaches to mimic AIH-associated liver inflammation have instead led to liver tolerance, consistent with the high tolerogenic capacity of the liver. Recently, we described a new mouse model that exhibited spontaneous and chronic liver inflammation that recapitulated the known histopathological and immunological parameters of AIH. The approach involved liver-extrinsic genetic engineering that interfered with the induction of T-cell tolerance in the thymus, the very process thought to inhibit AIH induction by liver-specific expression of exogenous antigens. The mutation led to depletion of specialized thymic epithelial cells that present self-antigens and eliminate autoreactive T-cells before they exit the thymus. Based on our findings, which are summarized below, we believe that this mouse model represents a relevant experimental tool towards elucidating the cellular and molecular aspects of AIH development and developing novel therapeutic strategies for treating this disease.
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Affiliation(s)
- Konstantina Alexandropoulos
- Department of Medicine and Clinical Immunology, the Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1089, New York, NY 10029, USA.
| | - Anthony J Bonito
- Department of Medicine and Clinical Immunology, the Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1089, New York, NY 10029, USA.
| | - Erica G Weinstein
- Department of Medicine and Clinical Immunology, the Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1089, New York, NY 10029, USA
| | - Olivier Herbin
- Department of Medicine and Clinical Immunology, the Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1089, New York, NY 10029, USA.
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Clinical features and outcomes of patients with drug-induced autoimmune hepatitis: a retrospective cohort study. Dig Liver Dis 2014; 46:1116-20. [PMID: 25224696 DOI: 10.1016/j.dld.2014.08.040] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 08/08/2014] [Accepted: 08/19/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND Drugs and herbal products can induce autoimmune hepatitis. We assessed frequency and clinical outcomes of patients suffering from drug-induced autoimmune hepatitis. METHODS All patients with drug-induced liver injury admitted between 2000 and 2011 were retrospectively studied. Diagnoses of drug-induced autoimmune hepatitis and idiopathic autoimmune hepatitis were made according to simplified criteria. After discharge, all patients had regular follow-up and were contacted to update outcomes. RESULTS Among 10,270 in-hospital patients, 136 (1.3%) were diagnosed with drug-induced liver injury. Among them, 12 (8.8%) were diagnosed as drug-induced autoimmune hepatitis (41.7% males, age range 17-73); 8 (66.7%) were with jaundice at admission. Liver biopsies showed a pattern compatible with drug-induced autoimmune hepatitis, featured by severe portal inflammation and lymphoplasmacytic infiltrate. Drug-induced autoimmune hepatitis group had a shorter duration of drug intake, and higher values of transaminases and gamma globulins. All patients received immunosuppressive therapy with subsequent clinical remission, and five achieved a steroid-free long-term remission. CONCLUSIONS A diagnosis of drug-induced autoimmune hepatitis was quite rare in our cohort, and clinical pattern was similar to idiopathic autoimmune hepatitis. Severe portal inflammation, prominent portal-plasma cells, rosette formation and severe focal necrosis were significantly more frequent in drug-induced autoimmune hepatitis as compared to drug-induced liver injury.
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de Boer YS, van Gerven NMF, Zwiers A, Verwer BJ, van Hoek B, van Erpecum KJ, Beuers U, van Buuren HR, Drenth JPH, den Ouden JW, Verdonk RC, Koek GH, Brouwer JT, Guichelaar MMJ, Vrolijk JM, Kraal G, Mulder CJJ, van Nieuwkerk CMJ, Fischer J, Berg T, Stickel F, Sarrazin C, Schramm C, Lohse AW, Weiler-Normann C, Lerch MM, Nauck M, Völzke H, Homuth G, Bloemena E, Verspaget HW, Kumar V, Zhernakova A, Wijmenga C, Franke L, Bouma G. Genome-wide association study identifies variants associated with autoimmune hepatitis type 1. Gastroenterology 2014; 147:443-52.e5. [PMID: 24768677 DOI: 10.1053/j.gastro.2014.04.022] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 03/17/2014] [Accepted: 04/09/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Autoimmune hepatitis (AIH) is an uncommon autoimmune liver disease of unknown etiology. We used a genome-wide approach to identify genetic variants that predispose individuals to AIH. METHODS We performed a genome-wide association study of 649 adults in The Netherlands with AIH type 1 and 13,436 controls. Initial associations were further analyzed in an independent replication panel comprising 451 patients with AIH type 1 in Germany and 4103 controls. We also performed an association analysis in the discovery cohort using imputed genotypes of the major histocompatibility complex region. RESULTS We associated AIH with a variant in the major histocompatibility complex region at rs2187668 (P = 1.5 × 10(-78)). Analysis of this variant in the discovery cohort identified HLA-DRB1*0301 (P = 5.3 × 10(-49)) as a primary susceptibility genotype and HLA-DRB1*0401 (P = 2.8 × 10(-18)) as a secondary susceptibility genotype. We also associated AIH with variants of SH2B3 (rs3184504, 12q24; P = 7.7 × 10(-8)) and CARD10 (rs6000782, 22q13.1; P = 3.0 × 10(-6)). In addition, strong inflation of association signal was found with single-nucleotide polymorphisms associated with other immune-mediated diseases, including primary sclerosing cholangitis and primary biliary cirrhosis, but not with single-nucleotide polymorphisms associated with other genetic traits. CONCLUSIONS In a genome-wide association study, we associated AIH type 1 with variants in the major histocompatibility complex region, and identified variants of SH2B3and CARD10 as likely risk factors. These findings support a complex genetic basis for AIH pathogenesis and indicate that part of the genetic susceptibility overlaps with that for other immune-mediated liver diseases.
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Affiliation(s)
- Ynto S de Boer
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands
| | - Nicole M F van Gerven
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands
| | - Antonie Zwiers
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands; Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, The Netherlands
| | - Bart J Verwer
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands
| | - Bart van Hoek
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Karel J van Erpecum
- Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ulrich Beuers
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Henk R van Buuren
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Joost P H Drenth
- Department of Gastroenterology and Hepatology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - Jannie W den Ouden
- Department of Gastroenterology and Hepatology, Haga Hospital, The Hague, The Netherlands
| | - Robert C Verdonk
- University of Groningen, University Medical Center Groningen, Department of Gastroenterology and Hepatology, Groningen, The Netherlands; Department of Gastroenterology and Hepatology, St Antonius Hospital Nieuwegein, Nieuwegein, The Netherlands
| | - Ger H Koek
- Department of Gastroenterology and Hepatology, University Medical Center Maastricht, Maastricht, The Netherlands
| | - Johannes T Brouwer
- Department of Gastroenterology and Hepatology, Reinier de Graaf Hospital, Delft, The Netherlands
| | - Maureen M J Guichelaar
- Department of Gastroenterology and Hepatology, Medisch Spectrum Twente, Enschede, The Netherlands
| | - Jan M Vrolijk
- Department of Gastroenterology and Hepatology, Rijnstate Hospital, Arnhem, The Netherlands
| | - Georg Kraal
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, The Netherlands
| | - Chris J J Mulder
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands
| | - Carin M J van Nieuwkerk
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands
| | - Janett Fischer
- Department of Internal Medicine, Neurology and Dermatology, Medical Clinic of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Thomas Berg
- Department of Internal Medicine, Neurology and Dermatology, Medical Clinic of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Felix Stickel
- Department of Visceral Surgery and Medicine, Inselspital, University of Bern, Bern, Switzerland
| | | | - Christoph Schramm
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ansgar W Lohse
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Markus M Lerch
- Department of Internal Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Georg Homuth
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt-University Greifswald, Greifswald, Germany
| | - Elisabeth Bloemena
- Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands
| | - Hein W Verspaget
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Vinod Kumar
- University of Groningen, University Medical Center Groningen, Department of Genetics, Groningen, The Netherlands
| | - Alexandra Zhernakova
- University of Groningen, University Medical Center Groningen, Department of Genetics, Groningen, The Netherlands
| | - Cisca Wijmenga
- University of Groningen, University Medical Center Groningen, Department of Genetics, Groningen, The Netherlands
| | - Lude Franke
- University of Groningen, University Medical Center Groningen, Department of Genetics, Groningen, The Netherlands
| | - Gerd Bouma
- Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands; Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, The Netherlands.
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Mendonça VRR, Souza LCL, Garcia GC, Magalhães BML, Lacerda MVG, Andrade BB, Gonçalves MS, Barral-Netto M. DDX39B (BAT1), TNF and IL6 gene polymorphisms and association with clinical outcomes of patients with Plasmodium vivax malaria. Malar J 2014; 13:278. [PMID: 25038626 PMCID: PMC4112608 DOI: 10.1186/1475-2875-13-278] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 07/14/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND DDX39B (BAT1) encodes an RNA helicase known to regulate expression of TNF and IL-6. Elevated levels of these two cytokines are associated with increased severity of clinical malaria. The aim of this study was to investigate the relationship between single nucleotide polymorphisms (SNPs) in the DDX39B, TNF and IL6 genes and the clinical outcomes of patients with Plasmodium vivax malaria. METHODS Cross-sectional investigations were carried out in two regions of the Brazilian Amazon where several studies on the pathogenesis of vivax malaria had been performed. Individuals were categorized according to infection status as well as clinical presentation into the following groups: uninfected, asymptomatic infection, mild infection, or complicated infection. Polymorphisms were identified using PCR restriction fragment-length polymorphism analysis and the restriction enzymes NlaIII or NcoI. The plasma levels of cytokines were determined using ELISA. RESULTS The G allele of DDX39B-22C > G was associated with absent or decreased manifestations of malaria and the C allele was a risk factor for disease complications. Study participants heterozygous for TNF-308 (GA) and DDX39B-348 (CT) had higher TNF levels than wild-type participants. Haplotypes that included DDX39B (-22C > G and -348C > T) and TNF polymorphisms were not directly associated with mild or complicated malaria infections; however, haplotypes AGC, ACC, GGT, AGT and ACT were associated with increased TNF levels. Participants with genotype combinations GC/CC/GG/GG and GG/CT/GG/GG (DDX39B-22/DDX39B-348/TNF-308/IL6-176) had decreased and increased risk of mild malaria, respectively, compared with asymptomatic and uninfected participants. GC/CC/GG/GG was linked to decreased TNF and IL-6 levels. CONCLUSIONS This is the first study to describe patients with DDX39B and IL6 SNPs who had vivax malaria. These findings support the postulation that a set of mutations in immune-related genes is associated with inflammatory mediators and the clinical outcomes of patients with malaria.
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Affiliation(s)
| | | | | | | | | | | | | | - Manoel Barral-Netto
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Brazil.
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