1
|
Adil N, Siddiqui AJ, Musharraf SG. Metabolomics‐based Researches in Autoimmune Liver Disease: A
Mini‐Review. Scand J Immunol 2022. [DOI: 10.1111/sji.13208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Nurmeen Adil
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
| | - Amna Jabbar Siddiqui
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
| | - Syed Ghulam Musharraf
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences University of Karachi Karachi Pakistan
| |
Collapse
|
2
|
Ledenko T, Sorić Hosman I, Ćorić M, Gagro A. Case Report: Simultaneously Developed Amyopathic Dermatomyositis and Autoimmune Sclerosing Cholangitis - a Coincidence or a Shared Immunopathogenesis? Front Immunol 2022; 13:825799. [PMID: 35281002 PMCID: PMC8906471 DOI: 10.3389/fimmu.2022.825799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/03/2022] [Indexed: 11/23/2022] Open
Abstract
Inflammatory rheumatic diseases (IRD) and autoimmune liver diseases (AILD) share many similarities regarding epidemiology, genetics, immunology and therapeutic regimens, so it is not surprising that approximately 20% of patients with AILD are diagnosed with an IRD as well. Clinical features and biochemical hallmarks of IRD and AILD often intertwine and cross diagnostic criteria. Therefore, the real distinction of underlying disorders in a patient with these comorbidities may be challenging. The present report is the first report of simultaneously developed juvenile dermatomyositis (JDM) and autoimmune sclerosing cholangitis (ASC) with both entities fulfilling the latest guidelines for a definite diagnosis. Both of these diagnoses are difficult to definitely establish since ASC has a similar serologic profile as autoimmune hepatitis and liver histological analysis is frequently non-specific, whereas clinically amyopathic JDM diagnosis depends mostly on classical dermatological symptoms, while the rest of the diagnostic criteria, including the necessity for skin or muscle biopsy and the presence of myositis specific antibodies, are still not uniformed. In spite of these challenges, our patient clearly met European League Against Rheumatism/American College of Rheumatology classification criteria for CAJDM and The European Society for Pediatric Gastroenterology, Hepatology and Nutrition diagnostic criteria for ASC. Since elevated serum transaminases, the presence of serum antinuclear antibodies and hypergammaglobulinemia could be explained as a part of both JDM and ASC, the underlying pathophysiology remains debatable. Intriguingly, JDM and ASC share genetic predisposition including human leukocyte antigen allele DRB1*0301 and tumor necrosis factor α 308A allele. Furthermore, both humoral and cellular components of the adaptive immune system contribute to the pathogenesis of JDM and ASC. Moreover, recent findings indicate that the loss of the CD28 expression on T-cells plays a significant role in their pathogenesis along with the Th17 immune pathway. Despite these common features that suggest shared autoimmunity, AILD and autoimmune myositis are traditionally studied and managed independently. The lack of therapies that target the underlying cause results in a high rate of adverse events due to unspecific immunosuppressive therapy. Shared autoimmunity is an ideal area to develop new, targeted immunotherapy that would hopefully be beneficial for more than one disease.
Collapse
Affiliation(s)
- Tomislav Ledenko
- Department of Pediatrics, Zadar General Hospital, Zadar, Croatia
| | - Iva Sorić Hosman
- Department of Pediatrics, Zadar General Hospital, Zadar, Croatia
| | - Marijana Ćorić
- Department of Pathology and Cytology, University Hospital Centre Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Alenka Gagro
- School of Medicine, University of Zagreb, Zagreb, Croatia.,Division of Pulmonology, Allergology, Immunology and Rheumatology, Department of Pediatrics, Children's Hospital Zagreb, Zagreb, Croatia
| |
Collapse
|
3
|
Crescente JG, Dellavance A, Diniz MA, Carrilho FJ, de Andrade LEC, Cançado ELR. Antineutrophil cytoplasmic antibody profiles differ according to type of primary sclerosing cholangitis and autoimmune hepatitis. Clinics (Sao Paulo) 2021; 76:e2228. [PMID: 33567045 PMCID: PMC7847259 DOI: 10.6061/clinics/2021/e2228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES To determine the frequency of the antineutrophil cytoplasmic antibodies (ANCA), antiproteinase-3 and antimyeloperoxidase, in primary sclerosing cholangitis (PSC) with or without inflammatory bowel disease (IBD+ or IBD-) and in different types of autoimmune hepatitis (AIH). Additionally, to verify the agreement between ANCA patterns by indirect immunofluorescence and their antigenic specificities by ELISA. METHODS For this study, 249 patients were enrolled (42 PSC/IBD+; 33 PSC/IBD-; 31 AIH type-1; 30 AIH type-2; 31 AIH type-3; 52 primary biliary cirrhosis; 30 healthy controls) whose serum samples were tested for ANCA autoantibodies. RESULTS There were fewer female subjects in the PSC/IBD- group (p=0.034). Atypical perinuclear-ANCA was detected more frequently in PSC/IBD+ patients than in PSC/IBD- patients (p=0.005), and was significantly more frequent in type-1 (p<0.001) and type-3 AIH (p=0.012) than in type-2 AIH. Proteinase-3-ANCA was detected in 25 samples (only one with cytoplasmic-ANCA pattern), and more frequently in PSC/IBD+ than in PSC/IBD- patients (p=0.025). Myeloperoxidase-ANCA was identified in eight samples (none with the perinuclear-ANCA pattern). Among the 62 reactive samples for atypical perinuclear-ANCA, 13 had antigenic specific reactions for proteinase-3 and myeloperoxidase. CONCLUSIONS PSC/IBD+ differed from PSC/IBD- in terms of sex and proteinase 3-ANCA and atypical perinuclear-ANCA reactivity, the latter of which was more frequently detected in type-1 and type-3 AIH than in type-2 AIH. There was no agreement between ANCA patterns and antigenic specificities in IBD and autoimmune liver diseases, which reinforces the need for proteinase-3 and myeloperoxidase antibody testing.
Collapse
Affiliation(s)
- Juliana Goldbaum Crescente
- Departamento de Gastroenterologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
- Laboratorio de Investigacao Medica (LIM 06), Instituto de Medicina Tropical, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Alessandra Dellavance
- Disciplina de Reumatologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR
- Divisao de Pesquisa e Desenvolvimento, Laboratorios Fleury Medicina e Saude, Sao Paulo, SP, BR
| | - Marcio Augusto Diniz
- Biostatistics and Bioinformatics Research Center, Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Flair Jose Carrilho
- Departamento de Gastroenterologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Luis Eduardo Coelho de Andrade
- Disciplina de Reumatologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR
- Divisao de Pesquisa e Desenvolvimento, Laboratorios Fleury Medicina e Saude, Sao Paulo, SP, BR
| | - Eduardo Luiz Rachid Cançado
- Departamento de Gastroenterologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
- Laboratorio de Investigacao Medica (LIM 06), Instituto de Medicina Tropical, Universidade de Sao Paulo, Sao Paulo, SP, BR
- *Corresponding author. E-mail:
| |
Collapse
|
4
|
Moiseev S, Cohen Tervaert JW, Arimura Y, Bogdanos DP, Csernok E, Damoiseaux J, Ferrante M, Flores-Suárez LF, Fritzler MJ, Invernizzi P, Jayne D, Jennette JC, Little MA, McAdoo SP, Novikov P, Pusey CD, Radice A, Salama AD, Savige JA, Segelmark M, Shoenfeld Y, Sinico RA, Sousa MJ, Specks U, Terrier B, Tzioufas AG, Vermeire S, Zhao MH, Bossuyt X. 2020 international consensus on ANCA testing beyond systemic vasculitis. Autoimmun Rev 2020; 19:102618. [PMID: 32663621 DOI: 10.1016/j.autrev.2020.102618] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 03/08/2020] [Indexed: 02/07/2023]
Abstract
This document follows up on a 2017 revised international consensus on anti-neutrophil cytoplasm antibodies (ANCA) testing in granulomatosis with polyangiitis and microscopic polyangiitis and focuses on the clinical and diagnostic value of ANCA detection in patients with connective tissue diseases, idiopathic interstitial pneumonia, autoimmune liver diseases, inflammatory bowel diseases, anti-glomerular basement membrane (GBM) disease, infections, malignancy, and during drug treatment. Current evidence suggests that in certain settings beyond systemic vasculitis, ANCA may have clinical, pathogenic and/or diagnostic relevance. Antigen-specific ANCA targeting proteinase-3 and myeloperoxidase should be tested by solid phase immunoassays in any patient with clinical features suggesting ANCA-associated vasculitis and in all patients with anti-GBM disease, idiopathic interstitial pneumonia, and infective endocarditis associated with nephritis, whereas in patients with other aforementioned disorders routine ANCA testing is not recommended. Among patients with autoimmune liver diseases or inflammatory bowel diseases, ANCA testing may be justified in patients with suspected autoimmune hepatitis type 1 who do not have conventional autoantibodies or in case of diagnostic uncertainty to discriminate ulcerative colitis from Crohn's disease. In these cases, ANCA should be tested by indirect immunofluorescence as the target antigens are not yet well characterized. Many questions concerning the optimal use of ANCA testing in patients without ANCA-associated vasculitis remain to be answered.
Collapse
Affiliation(s)
- Sergey Moiseev
- Tareev Clinic of Internal Diseases, Sechenov First Moscow State Medical University, Moscow, Russia.
| | - Jan Willem Cohen Tervaert
- Department of Medicine, Division of Rheumatology, University of Alberta, Edmonton, Canada and Maastricht University, Maastricht, The Netherlands
| | - Yoshihiro Arimura
- Department of Nephrology and Rheumatology, Kyorin University School of Medicine, Tokyo, Japan
| | - Dimitrios P Bogdanos
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - Elena Csernok
- Department of Internal Medicine, Rheumatology and Immunology, Vasculitis-Center Tübingen-Kirchheim, Medius Klinik Kirchheim, University of Tübingen, Kirchheim-Teck, Germany
| | - Jan Damoiseaux
- Central Diagnostic Laboratory, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Marc Ferrante
- University Hospitals Leuven, Department of Gastroenterology and Hepatology, KU Leuven, Leuven, Belgium
| | - Luis Felipe Flores-Suárez
- Primary Systemic Vasculitides Clinic, Instituto Nacional de Enfermedades Respiratorias, Mexico City, Mexico
| | - Marvin J Fritzler
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Pietro Invernizzi
- Division Gastroenterology and Center for Autoimmune Liver Diseases, University of Milano-Bicocca School of Medicine, Monza, Italy
| | - David Jayne
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - J Charles Jennette
- Division of Nephropathology, School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Mark A Little
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Dublin, Ireland
| | - Stephen P McAdoo
- Centre for Inflammatory Disease, Department of Medicine, Imperial College London, London, UK
| | - Pavel Novikov
- Tareev Clinic of Internal Diseases, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Charles D Pusey
- Centre for Inflammatory Disease, Department of Medicine, Imperial College London, London, UK
| | - Antonella Radice
- Microbiology and Virology Institute, ASST Santi Paolo e Carlo, San Carlo Borromeo Hospital, Milan, Italy
| | - Alan D Salama
- UCL Department of Renal Medicine, Royal Free Hospital, London, UK
| | - Judith A Savige
- Department of Medicine, Melbourne Health, University of Melbourne, Melbourne, Australia
| | - Mårten Segelmark
- Department of Clinical Sciences, Lund University, Department of Nephrology and Rheumatology, Skane University Hospital, Lund, Sweden
| | - Yehuda Shoenfeld
- Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Renato A Sinico
- Department of Medicine and Surgery, Università degli Studi di Milano-Bicocca, Monza, Italy
| | - Maria-José Sousa
- Immunopathology and Autoimmunity Department, Centro de Medicina Laboratorial Germano de Sousa, Lisbon, Portugal
| | - Ulrich Specks
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
| | - Benjamin Terrier
- Department of Internal Medicine, National Referral Center for Rare Systemic and Autoimmune Diseases, Hôpital Cochin, Paris, France
| | - Athanasios G Tzioufas
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Severine Vermeire
- University Hospitals Leuven, Department of Gastroenterology and Hepatology, KU Leuven, Leuven, Belgium
| | - Ming-Hui Zhao
- Renal Division, Peking University First Hospital, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Peking-Tsinghua Centre for Life Sciences, Beijing, China
| | - Xavier Bossuyt
- Laboratory Medicine, University Hospitals Leuven, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| |
Collapse
|
5
|
Terziroli Beretta-Piccoli B, Mieli-Vergani G, Vergani D. The clinical usage and definition of autoantibodies in immune-mediated liver disease: A comprehensive overview. J Autoimmun 2018; 95:144-158. [DOI: 10.1016/j.jaut.2018.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/09/2018] [Accepted: 10/11/2018] [Indexed: 02/06/2023]
|
6
|
Phatak S, Aggarwal A, Agarwal V, Lawrence A, Misra R. Antineutrophil cytoplasmic antibody (ANCA) testing: Audit from a clinical immunology laboratory. Int J Rheum Dis 2017; 20:774-778. [PMID: 27457216 DOI: 10.1111/1756-185x.12926] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
AIM Anti-neutrophil cytoplasmic antibodies (ANCA) are associated with small vessel vasculitis now termed 'ANCA associated vasculitis' (AAV). ANCAs are reported in diverse diseases where they have no clinical utility. We carried out an audit in a clinical immunology laboratory and assessed if use of ordering practices could have improved utility of ANCA. METHODS All samples received for ANCA testing during 2014 were tested by indirect immunofluorescence (IIF) and automated enzyme-linked immunosorbent assay (ELISA). Clinical records of all samples positive by one or more assays were retrieved. We assessed the effect of applying proposed test ordering guidelines on performance of the tests. RESULTS Of 1590 samples, 108 (6.8%) had a positive result by at least one method. IIF showed perinuclear pattern in 72 (21 were antinuclear antibody positive), cytoplasmic in 22, six had atypical pattern and eight were negative. By ELISA anti-myeloperoxidase antibodies were present in 33 samples, anti-proteinase 3 in 24, while five sera had both antibodies. ELISA and IIF were concordant in 45 samples. Twenty-seven patients had AAV of which 23 were both ELISA and IIF positive. Among these 27 with AAV all had at least one ordering criteria, while in 81 patients without AAV but with positive test, 38 had no ordering criteria. CONCLUSION Reduction in false positive can be achieved by considering only those samples as ANCA positive that test positive both on IIF and ELISA and by following ordering guidelines before requesting ANCA testing, and by use of ordering criteria by clinicians.
Collapse
Affiliation(s)
- Sanat Phatak
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Amita Aggarwal
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Vikas Agarwal
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Able Lawrence
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - Ramnath Misra
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| |
Collapse
|
7
|
Kyriakidi KS, Tsianos VE, Karvounis E, Christodoulou DK, Katsanos KH, Tsianos EV. Neutrophil anti-neutrophil cytoplasmic autoantibody proteins: bactericidal increasing protein, lactoferrin, cathepsin, and elastase as serological markers of inflammatory bowel and other diseases. Ann Gastroenterol 2016; 29:258-67. [PMID: 27366026 PMCID: PMC4923811 DOI: 10.20524/aog.2016.0028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 02/26/2016] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory disorder of the gastrointestinal tract comprising Crohn's disease and ulcerative colitis. Although the pathogenesis of the disease is not clearly defined yet, environmental, genetic and other factors contribute to the onset of the disease. Apart from the clinical and histopathological findings, several serological biomarkers are also employed to detect IBD. One of the most thoroughly studied biomarker is anti-neutrophil cytoplasmic autoantibody (ANCA). We herein provide an overview of the current knowledge on the use of ANCA and certain ANCA proteins, such as bactericidal increasing protein, lactoferrin, cathepsin G and elastase, as serological markers for IBD and other diseases.
Collapse
Affiliation(s)
- Kallirroi S. Kyriakidi
- Research Laboratory of Immunology (Kallirroi S. Kyriakidi, Vasileios E. Tsianos, Evaggelos Karvounis), Ioannina, Greece
| | - Vasileios E. Tsianos
- Research Laboratory of Immunology (Kallirroi S. Kyriakidi, Vasileios E. Tsianos, Evaggelos Karvounis), Ioannina, Greece
| | - Evaggelos Karvounis
- Research Laboratory of Immunology (Kallirroi S. Kyriakidi, Vasileios E. Tsianos, Evaggelos Karvounis), Ioannina, Greece
| | | | - Konstantinos H. Katsanos
- Division of Gastroenterology (Dimitrios K. Christodoulou, Konstantinos H. Katsanos), Ioannina, Greece
| | - Epameinondas V. Tsianos
- Faculty of Medicine, School of Health Sciences (Epameinondas V. Tsianos), University of Ioannina, Ioannina, Greece
| |
Collapse
|
8
|
Marzorati S, Invernizzi P, Lleo A. Making Sense of Autoantibodies in Cholestatic Liver Diseases. Clin Liver Dis 2016; 20:33-46. [PMID: 26593289 DOI: 10.1016/j.cld.2015.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC) are the most common chronic cholestatic liver diseases (CLD) in adults and are associated with immune mechanisms. PBC is considered a model autoimmune disease, and more than 90% of patients present very specific autoantibodies against mitochondrial antigens. Whether PSC should be considered an autoimmune or merely immune-mediated disease is still under debate. This review addresses the clinical relevance of autoantibodies in CLD and their pathogenic mechanisms and illustrates the technology available for appropriate autoantibody detection.
Collapse
Affiliation(s)
- Simona Marzorati
- Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, Via A. Manzoni 113, Rozzano, Milan 20089, Italy; Department of Electronics, Information and Bioengineering, Politecnico di Milano, via Ponzio 34/5, Milan 20133, Italy
| | - Pietro Invernizzi
- Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, Via A. Manzoni 113, Rozzano, Milan 20089, Italy; Division of Rheumatology, Allergy, and Clinical Immunology, University of California Davis, GBSF, 451 Health Science Drive, Davis, CA 95616, USA
| | - Ana Lleo
- Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, Via A. Manzoni 113, Rozzano, Milan 20089, Italy.
| |
Collapse
|
9
|
Stinton LM, Bentow C, Mahler M, Norman GL, Eksteen B, Mason AL, Kaplan GG, Lindkvist B, Hirschfield GM, Milkiewicz P, Cheung A, Janssen HLA, Fritzler MJ. PR3-ANCA: a promising biomarker in primary sclerosing cholangitis (PSC). PLoS One 2014; 9:e112877. [PMID: 25397578 PMCID: PMC4232573 DOI: 10.1371/journal.pone.0112877] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 10/18/2014] [Indexed: 12/12/2022] Open
Abstract
Background and Aims The only recognized biomarker for primary sclerosing cholangitis (PSC) is atypical anti-neutrophil cytoplasmic antibodies (aANCA), which, in addition to having low sensitivity and specificity, is an indirect immunofluorescence (IIF) test lacking the advantages of high throughput and objectivity. Recent reports have shown that antibodies to proteinase-3 (PR3-ANCA) might add diagnostic value in inflammatory bowel disease (IBD), specifically in ulcerative colitis (UC). As PSC is associated with IBD, the objective of this study was to evaluate the frequency and clinical significance of PR3-ANCA in a large cohort of patients. Methods A total of 244 PSC and 254 control [autoimmune hepatitis (AIH), primary biliary cirrhosis (PBC), hepatitis C viral infection (HCV), hepatitis B viral infection (HBV), and healthy controls] sera and their clinical correlations were retrospectively analyzed for PR3-ANCA determined by ELISA and a new chemiluminescence immunoassay (CIA). Testing was also performed for aANCA by IIF. Results When measured by CIA, PR3-ANCA was detected in 38.5% (94/244) of PSC patients compared to 10.6% (27/254) controls (p<0.0001). By ELISA, PR3-ANCA was detected in 23.4% (57/244) of PSC patients compared to 2.7% (6/254) controls (p<0.0001). PR3-ANCA in PSC patients was not associated with the presence or type of underlying IBD, and, in fact, it was more frequent in Crohn's disease (CD) patients with PSC than previously reported in CD alone. PR3-ANCA in PSC measured by CIA correlated with higher liver enzymes. Conclusion PR3-ANCA is detected in a significant proportion of PSC patients compared to other liver diseases including PBC and AIH. PR3-ANCA is associated with higher liver enzyme levels in PSC, and is not solely related to underlying IBD.
Collapse
Affiliation(s)
- Laura M. Stinton
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
| | - Chelsea Bentow
- Inova Diagnostics, Inc., San Diego, California, United States of America
| | - Michael Mahler
- Inova Diagnostics, Inc., San Diego, California, United States of America
| | - Gary L. Norman
- Inova Diagnostics, Inc., San Diego, California, United States of America
| | - Bertus Eksteen
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Andrew L. Mason
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Gilaad G. Kaplan
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Bjorn Lindkvist
- Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Gideon M. Hirschfield
- Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham, United Kingdom
| | - Piotr Milkiewicz
- Department of General, Transplant and Liver Surgery, Warsaw Medical University, Warsaw, Poland
- Liver Research Laboratories, Pomeranian Medical University, Szczecin, Poland
| | - Angela Cheung
- University Health Network, Division of Gastroenterology, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Harry L. A. Janssen
- University Health Network, Division of Gastroenterology, Toronto Western Hospital, Toronto, Ontario, Canada
| | | |
Collapse
|
10
|
Novel clinical and diagnostic aspects of antineutrophil cytoplasmic antibodies. J Immunol Res 2014; 2014:185416. [PMID: 24995343 PMCID: PMC4068101 DOI: 10.1155/2014/185416] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 03/06/2014] [Indexed: 12/18/2022] Open
Abstract
Antineutrophil cytoplasmic antibodies (ANCA) are the serological hallmark of some idiopathic systemic vasculitides. Besides the investigation of ANCA-associated vasculitis (AAV) and constant effort for a standardized nomenclature and classification of the AAV, a main focus of research during the last few years has been to constantly improve the performance of enzyme immunoassays. With the latest so called third generation ELISA, this goal seemed to be fulfilled. The International Consensus Statement on Testing and Reporting of ANCA gave recommendations for standardized strategies for the serological diagnosis of ANCA. New developments now target the system immanent drawbacks of the respective diagnostic methods, be it the need for batching and the long time to result for ELISA, or the high likelihood of error and subjectivity of indirect immunofluorescence (IIF). Random access technology and multiplexing for solid phase assays as well as digital imaging for IIF are tools which may help to expedite and simplify routine diagnostics in the lab and in emergency settings. Recent findings indicate that PR3-ANCA have clinical utility beyond the diagnosis of AAV. PR3-ANCA can also serve as an aid for the differentiation between ulcerative colitis (UC) and Crohn's disease (CrD) and the stratification of UC patients. This review provides a detailed review of what is known about ANCA and highlights the latest research and state-of-the-art developments in this area.
Collapse
|
11
|
Clinical management of autoimmune biliary diseases. J Autoimmun 2013; 46:88-96. [DOI: 10.1016/j.jaut.2013.06.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 06/19/2013] [Indexed: 12/11/2022]
|
12
|
Huang XH, Zhang YH, Tan LM, Zou XJ, Chen JJ, Li H, Wang WM. Clinical significance of detection of anti-neutrophil cytoplasmic antibodies in patients with autoimmune hepatitis. Shijie Huaren Xiaohua Zazhi 2013; 21:2440-2445. [DOI: 10.11569/wcjd.v21.i24.2440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the significance of detection of anti-myeloperoxidase antibody (ANCAs) in the diagnosis of autoimmune hepatitis (AIH).
METHODS: In total, 48 AIH patients, 190 non-AIH patients and 50 healthy volunteers were included in this retrospective study. Enzyme-linked immunosorbent assay (ELISA) was used to detect anti-RP3, anti -MPO and ALA, while indirect immunofluorescence (IIF) was employed to detect ANCAs.
RESULTS: The positive rates of ANCA, p-ANCA, x-ANCA and ALA in the AIH group had significant differences compared with the non-AIH group (except for PSC). The positive rate of anti-MPO was significantly higher in the AIH group than in the non-AIH group (P < 0.01). Of all specimens in the AIH group, only 1 was positive for c-ANCA and PR3 simultaneously. There was a good correlation between anti-MPO and ANCA, between anti-MPO and p-ANCA, and between ALA and x-ANCA in the AIH group. The kappa values of anti-MPO and ANCA as well as anti-MPO and p-ANCA were 0.819 and 0.875, respectively, showing excellent agreement.
CONCLUSION: Combined detection of ANCAs is helpful for the diagnosis of AIH and AIH subtypes.
Collapse
|