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Querol L, De Sèze J, Dysgaard T, Levine T, Rao TH, Rivner M, Hartung HP, Kiessling P, Shimizu S, Marmol D, Bozorg A, Colson AO, Massow U, Eftimov F. Efficacy, safety and tolerability of rozanolixizumab in patients with chronic inflammatory demyelinating polyradiculoneuropathy: a randomised, subject-blind, investigator-blind, placebo-controlled, phase 2a trial and open-label extension study. J Neurol Neurosurg Psychiatry 2024; 95:845-854. [PMID: 38729747 PMCID: PMC11347201 DOI: 10.1136/jnnp-2023-333112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/13/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is a peripheral nerve disorder characterised by weakness and sensory loss. We assessed the neonatal Fc receptor inhibitor rozanolixizumab for CIDP management. METHODS CIDP01 (NCT03861481) was a randomised, subject-blind, investigator-blind, placebo-controlled, phase 2a study. Adults with definite or probable CIDP receiving subcutaneous or intravenous immunoglobulin maintenance therapy were randomised 1:1 to 12 once-weekly subcutaneous infusions of rozanolixizumab 10 mg/kg or placebo, stratified according to previous immunoglobulin administration route. Investigators administering treatment and assessing efficacy, and patients, were blinded. The primary outcome was a change from baseline (CFB) to day 85 in inflammatory Rasch-built Overall Disability Scale (iRODS) score. Eligible patients who completed CIDP01 entered the open-label extension CIDP04 (NCT04051944). RESULTS In CIDP01, between 26 March 2019 and 31 March 2021, 34 patients were randomised to rozanolixizumab or placebo (17 (50%) each). No significant difference in CFB to day 85 in iRODS centile score was observed between rozanolixizumab (least squares mean 2.0 (SE 3.2)) and placebo (3.4 (2.6); difference -1.5 (90% CI -7.5 to 4.5)). Overall, 14 (82%) patients receiving rozanolixizumab and 13 (76%) receiving placebo experienced a treatment-emergent adverse event during the treatment period. Across CIDP01 and CIDP04, rozanolixizumab was well tolerated over up to 614 days; no clinically meaningful efficacy results were seen. No deaths occurred. CONCLUSIONS Rozanolixizumab did not show efficacy in patients with CIDP in this study, although this could be due to a relatively high placebo stability rate. Rozanolixizumab was well tolerated over medium-to-long-term weekly use, with an acceptable safety profile.
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Affiliation(s)
- Luis Querol
- Neuromuscular Diseases Unit - Neurology Department, Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Barcelona, Spain
- Center for Network Research in Rare Diseases - CIBERER, Madrid, Spain
| | - Jérôme De Sèze
- Department of Neurology, Clinical Investigation Centre, University Hospital of Strasbourg, Strasbourg, France
| | - Tina Dysgaard
- Department of Neurology, Copenhagen Neuromuscular Center, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Todd Levine
- Honor Health Neurology, Bob Bové Neuroscience Institute, Scottsdale, Arizona, USA
| | - T Hemanth Rao
- The Neurological Institute, PA, Charlotte, North Carolina, USA
| | - Michael Rivner
- Department of Neurology, Augusta University, Augusta, Atlanta, Georgia, USA
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
- Brain and Mind Center, Medical Faculty, University of Sydney, Sydney, New South Wales, Australia
- Department of Neurology, Palacký University, Olomouc, Czech Republic
| | | | | | | | - Ali Bozorg
- UCB Pharma, Morrisville, North Carolina, USA
| | | | | | - Filip Eftimov
- Department of Neurology, Amsterdam Neuroscience, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
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Lorenz N, McGregor R, Whitcombe AL, Sharma P, Ramiah C, Middleton F, Baker MG, Martin WJ, Wilson NJ, Chung AW, Moreland NJ. An acute rheumatic fever immune signature comprising inflammatory markers, IgG3, and Streptococcus pyogenes-specific antibodies. iScience 2024; 27:110558. [PMID: 39184444 PMCID: PMC11342286 DOI: 10.1016/j.isci.2024.110558] [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: 04/24/2024] [Revised: 07/11/2024] [Accepted: 07/17/2024] [Indexed: 08/27/2024] Open
Abstract
Understanding the immune profile of acute rheumatic fever (ARF), a serious post-infectious sequelae of Streptococcal pyogenes (group A Streptococcus [GAS]), could inform disease pathogenesis and management. Circulating cytokines, immunoglobulins, and complement were analyzed in participants with first-episode ARF, swab-positive GAS pharyngitis and matched healthy controls. A striking elevation of total IgG3 was observed in ARF (90% > clinical reference range for normal). ARF was also associated with an inflammatory triad with significant correlations between interleukin-6, C-reactive protein, and complement C4 absent in controls. Quantification of GAS-specific antibody responses revealed that subclass polarization was remarkably consistent across the disease spectrum; conserved protein antigens polarized to IgG1, while M-protein responses polarized to IgG3 in all groups. However, the magnitude of responses was significantly higher in ARF. Taken together, these findings emphasize the association of exaggerated GAS antibody responses, IgG3, and inflammatory cytokines in ARF and suggest IgG3 testing could beneficially augment clinical diagnosis.
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Affiliation(s)
- Natalie Lorenz
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand
| | - Reuben McGregor
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand
| | - Alana L. Whitcombe
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand
| | - Prachi Sharma
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Ciara Ramiah
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Francis Middleton
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand
| | - Michael G. Baker
- Maurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand
- Department of Public Health, University of Otago, Wellington, New Zealand
| | | | - Nigel J. Wilson
- Starship Children’s Hospital, Health New Zealand – Te Whatu Ora, Auckland, New Zealand
| | - Amy W. Chung
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Nicole J. Moreland
- School of Medical Science, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand
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Gu D, Lim J, Han KY, Seo IH, Jee JH, Cho SJ, Choi YH, Choi SC, Koh JH, Lee JY, Kang M, Jung DH, Park WY. Single-cell analysis of human PBMCs in healthy and type 2 diabetes populations: dysregulated immune networks in type 2 diabetes unveiled through single-cell profiling. Front Endocrinol (Lausanne) 2024; 15:1397661. [PMID: 39072276 PMCID: PMC11272961 DOI: 10.3389/fendo.2024.1397661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 05/27/2024] [Indexed: 07/30/2024] Open
Abstract
Abnormalities in glucose metabolism that precede the onset of type 2 diabetes (T2D) activate immune cells, leading to elevated inflammatory factors and chronic inflammation. However, no single-cell RNA sequencing (scRNA-seq) studies have characterized the properties and networks of individual immune cells in T2D. Here, we analyzed peripheral blood mononuclear cells (PBMCs) from non-diabetes and T2D patients by scRNA-seq. We found that CD14 monocytes in T2D patients were in a pro-inflammatory state and intermediate monocytes expressed more MHC class II genes. In T2D patients, cytotoxic CD4 T cells, effector memory CD8 T cells, and γδ T cells have increased cytotoxicity and clonal expansion. B cells were characterized by increased differentiation into intermediate B cells, plasma cells, and isotype class switching with increased expression of soluble antibody genes. These results suggest that monocytes, T cells, and B cells could interact to induce chronic inflammation in T2D patients with pro-inflammatory characteristics.
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Affiliation(s)
- Doeon Gu
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Jinyeong Lim
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Kyung Yeon Han
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - In-Ho Seo
- Department of Biomedical Science, College of Life Science CHA University, Gyeonggi-do, Republic of Korea
| | - Jae Hwan Jee
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Soo Jin Cho
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yoon Ho Choi
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sung Chul Choi
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jang Hyun Koh
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin-Young Lee
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Mira Kang
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Department of Digital Health, Samsung Advanced Institute of Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
- Digital Transformation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Dong-Hyuk Jung
- Department of Family Medicine, Yongin Severance Hospital, Gyeonggi-do, Republic of Korea
| | - Woong-Yang Park
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Hyodo T, Hara S, Goto S, Fujii H, Nishi S, Horinouchi T, Nozu K, Yoshikawa N, Yoshimoto A, Itoh T. Immunohistological analysis reveals IgG1-dominant immunophenotype of tubulointerstitial nephritis unassociated with IgG4-related diseases. Int Urol Nephrol 2024; 56:2363-2369. [PMID: 38381285 PMCID: PMC11189997 DOI: 10.1007/s11255-024-03966-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/29/2024] [Indexed: 02/22/2024]
Abstract
PURPOSE Tubulointerstitial nephritis (TIN) has various etiologies, including IgG4-related disease (IgG4-RD), autoimmune diseases, antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), and others. IgG4-positive plasma cell infiltration can occasionally be found in TIN unrelated to IgG4-RD. Therefore, there may be problems with usage of IgG4 immunostaining to differentiate between TIN with and TIN without IgG4-RD. This study aimed to compare the proportion of plasma cells that are positive for each IgG subclass and to clarify the predominant IgG subclass trends and clinical characteristics associated with IgG4-RD and non-IgG4-related interstitial nephritis. METHODS The study enrolled 44 cases of TIN: 6 of IgG4-RD, 8 of autoimmune disease, 9 of AAV, and 21 of unknown disease group. In addition to clinical characteristics, IgG subclass composition of interstitial plasma cells was evaluated among 4 groups by immunohistochemistry. RESULTS IgG1 was the predominant IgG subclass in TIN unrelated to IgG4-RD. In the IgG4-RD group, the IgG subclass rate was high in both IgG1 and IgG4. The rate of average IgG4-positive cells was significantly lower in the autoimmune disease group and unknown disease group compared with the IgG4-RD group. CONCLUSION The present study revealed IgG1-dominant immune profiles of TIN unrelated to IgG4-RD. Further investigation is required to elucidate the clinicopathological differences between IgG1-dominant and IgG4-dominant groups in IgG4-RD.
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Affiliation(s)
- Toshiki Hyodo
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Shigeo Hara
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Japan
- Department of Diagnostic Pathology, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Shunsuke Goto
- Division of Nephrology and Kidney Center, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hideki Fujii
- Division of Nephrology and Kidney Center, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinichi Nishi
- Division of Nephrology and Kidney Center, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoko Horinouchi
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kandai Nozu
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | | | - Akihiro Yoshimoto
- Department of Nephrology, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Tomoo Itoh
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Japan
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Jarius S, Ringelstein M, Schanda K, Ruprecht K, Korporal-Kuhnke M, Viehöver A, Hümmert MW, Schindler P, Endmayr V, Gastaldi M, Trebst C, Franciotta D, Aktas O, Höftberger R, Haas J, Komorowski L, Paul F, Reindl M, Wildemann B. Improving the sensitivity of myelin oligodendrocyte glycoprotein-antibody testing: exclusive or predominant MOG-IgG3 seropositivity-a potential diagnostic pitfall in patients with MOG-EM/MOGAD. J Neurol 2024; 271:4660-4671. [PMID: 38609667 PMCID: PMC11233316 DOI: 10.1007/s00415-024-12285-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND Myelin oligodendrocyte glycoprotein antibody-associated encephalomyelitis (MOG-EM; also termed MOG antibody-associated disease, MOGAD) is the most important differential diagnosis of both multiple sclerosis and neuromyelitis optica spectrum disorders. A recent proposal for new diagnostic criteria for MOG-EM/MOGAD explicitly recommends the use of immunoglobulin G subclass 1 (IgG1)- or IgG crystallizable fragment (Fc) region-specific assays and allows the use of heavy-and-light-chain-(H+L) specific assays for detecting MOG-IgG. By contrast, the utility of MOG-IgG3-specific testing has not been systematically evaluated. OBJECTIVE To assess whether the use of MOG-IgG3-specific testing can improve the sensitivity of MOG-IgG testing. METHODS Re-testing of 22 patients with a definite diagnosis of MOG-EM/MOGAD and clearly positive MOG-IgG status initially but negative or equivocal results in H+L- or Fc-specific routine assays later in the disease course (i.e. patients with spontaneous or treatment-driven seroreversion). RESULTS In accordance with previous studies that had used MOG-IgG1-specific assays, IgG subclass-specific testing yielded a higher sensitivity than testing by non-subclass-specific assays. Using subclass-specific secondary antibodies, 26/27 supposedly seroreverted samples were still clearly positive for MOG-IgG, with MOG-IgG1 being the most frequently detected subclass (25/27 [93%] samples). However, also MOG-IgG3 was detected in 14/27 (52%) samples (from 12/22 [55%] patients). Most strikingly, MOG-IgG3 was the predominant subclass in 8/27 (30%) samples (from 7/22 [32%] patients), with no unequivocal MOG-IgG1 signal in 2 and only a very weak concomitant MOG-IgG1 signal in the other six samples. By contrast, no significant MOG-IgG3 reactivity was seen in 60 control samples (from 42 healthy individuals and 18 patients with MS). Of note, MOG-IgG3 was also detected in the only patient in our cohort previously diagnosed with MOG-IgA+/IgG- MOG-EM/MOGAD, a recently described new disease subvariant. MOG-IgA and MOG-IgM were negative in all other patients tested. CONCLUSIONS In some patients with MOG-EM/MOGAD, MOG-IgG is either exclusively or predominantly MOG-IgG3. Thus, the use of IgG1-specific assays might only partly overcome the current limitations of MOG-IgG testing and-just like H+L- and Fcγ-specific testing-might overlook some genuinely seropositive patients. This would have potentially significant consequences for the management of patients with MOG-EM/MOGAD. Given that IgG3 chiefly detects proteins and is a strong activator of complement and other effector mechanisms, MOG-IgG3 may be involved in the immunopathogenesis of MOG-EM/MOGAD. Studies on the frequency and dynamics as well as the clinical and therapeutic significance of MOG-IgG3 seropositivity are warranted.
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Affiliation(s)
- S Jarius
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany.
| | - M Ringelstein
- Department of Neurology, Heinrich Heine University, Düsseldorf, Germany
| | - K Schanda
- Clinical Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - K Ruprecht
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - M Korporal-Kuhnke
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany
| | - A Viehöver
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany
| | - M W Hümmert
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - P Schindler
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - V Endmayr
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
| | - M Gastaldi
- Neuroimmunology Laboratory and Neuroimmunology Research Unit, IRCCS Mondino Foundation National Neurological Institute, Pavia, Italy
| | - C Trebst
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - D Franciotta
- Neuroimmunology Laboratory and Neuroimmunology Research Unit, IRCCS Mondino Foundation National Neurological Institute, Pavia, Italy
| | - O Aktas
- Department of Neurology, Heinrich Heine University, Düsseldorf, Germany
| | - R Höftberger
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
| | - J Haas
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany
| | - L Komorowski
- Institute of Experimental Neuroimmunology, affiliated to Euroimmun AG, Lübeck, Germany
| | - F Paul
- Experimental and Clinical Research Center, a cooperation between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité - Universitätsmedizin Berlin, Berlin, Germany
- Neuroscience Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - M Reindl
- Clinical Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - B Wildemann
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany.
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Vujasinovic M, Said K, Villard C, Carlsson J, Poli C, Maisonneuve P, Löhr JM. The Role of Immunoglobulin G4 in Outcomes of Primary Sclerosing Cholangitis. J Clin Med 2023; 13:79. [PMID: 38202086 PMCID: PMC10779552 DOI: 10.3390/jcm13010079] [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: 11/13/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
INTRODUCTION Primary sclerosing cholangitis (PSC) is a chronic, cholestatic liver disease that is characterized by an inflammatory and fibrotic process affecting bile ducts which eventually develops into liver cirrhosis and liver failure. The aim of this study was to investigate serum IgG subclass distribution in patients with PSC and its possible association with PSC outcomes. PATIENTS AND METHODS We performed a retrospective analysis of 181 patients who had been diagnosed with PSC between January 1970 and December 2015 and followed at our outpatient clinic. Their demographic, immunological, and clinical characteristics were recorded and analyzed. RESULTS This study included 181 patients with PSC (120 males, 61 females). There was no association between IgGs and the development of autoimmune hepatitis, cirrhosis, cholangiocarcinoma, liver transplantation, inflammatory bowel disease, and colectomy. Patients with elevated IgG4 had statistically significant higher rates of cholangitis (p = 0.02) and endoscopic retrograde cholangiopancreatography (ERCP) (p = 0.009). High IgG4 values were observed in nine patients who underwent ERCP. In these nine patients, on average, IgG4 was evaluated 5 years after ERCP (min 3 days, max 11 years). Subanalysis considering only IgG4 values evaluated before ERCP showed no significant difference but remains significant if we consider IgG4 values after ERCP. CONCLUSION Elevated IgG4 in our study showed a possible association with higher rates of cholangitis and ERCP among patients with primary sclerosing cholangitis. It seems that IgGs may be a useful tool for the prediction of outcomes in patients with PSC. A prospective study is necessary, especially to study the trends of IgGs values during disease as well as the role of possible seroconversion.
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Affiliation(s)
- Miroslav Vujasinovic
- Department for Upper Abdominal Diseases, Karolinska University Hospital, 141 86 Stockholm, Sweden; (K.S.); (J.-M.L.)
- Department of Medicine Huddinge, Karolinska Institute, 141 86 Stockholm, Sweden; (C.V.); (C.P.)
| | - Karouk Said
- Department for Upper Abdominal Diseases, Karolinska University Hospital, 141 86 Stockholm, Sweden; (K.S.); (J.-M.L.)
| | - Christina Villard
- Department of Medicine Huddinge, Karolinska Institute, 141 86 Stockholm, Sweden; (C.V.); (C.P.)
- Department of Transplantation Surgery, Karolinska Institute, 141 86 Stockholm, Sweden
| | | | - Christopher Poli
- Department of Medicine Huddinge, Karolinska Institute, 141 86 Stockholm, Sweden; (C.V.); (C.P.)
| | - Patrick Maisonneuve
- Division of Epidemiology and Biostatistics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy;
| | - J.-Matthias Löhr
- Department for Upper Abdominal Diseases, Karolinska University Hospital, 141 86 Stockholm, Sweden; (K.S.); (J.-M.L.)
- Department of Clinical Science, Intervention, and Technology (CLINTEC), Karolinska Institute, 171 77 Stockholm, Sweden
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Gao X, Xiao G, Yang F, Dou R, Xue M, Zhang Y, Zheng Z, Ding J. Laboratory risk factors for coexistent primary biliary cholangitis in patients with Sjögren's syndrome: a retrospective study. BMC Gastroenterol 2023; 23:220. [PMID: 37365494 DOI: 10.1186/s12876-023-02859-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 06/19/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND Limited research exists on the laboratory characteristics of coexistent primary biliary cholangitis (PBC) and Sjögren's syndrome (SS). This study aimed to investigate the laboratory risk factors for the coexistence of PBC in patients with SS. METHODS Eighty-two patients with coexistent SS and PBC (median age 52.50 years) and 82 age- and sex-matched SS controls were retrospectively enrolled between July 2015 and July 2021. The clinical and laboratory characteristics of the two groups were compared. Laboratory risk factors for the coexistence of PBC in patients with SS were analyzed using logistic regression analysis. RESULTS Both groups had a similar prevalence of hypertension, diabetes, thyroid disease, and interstitial lung disease. Compared with the SS group, patients in the SS + PBC group had higher levels of liver enzymes, immunoglobulins M (IgM), G2, and G3 (P < 0.05). The percentage of patients with an antinuclear antibody (ANA) titre > 1:10000 in the SS + PBC group was 56.1%, higher than that in the SS group (19.5%, P < 0.05). Additionally, cytoplasmic, centromeric, and nuclear membranous patterns of ANA and positive anti-centromere antibody (ACA) were observed more frequently in the SS + PBC group (P < 0.05). Logistic regression analysis showed that elevated IgM levels, high ANA titre, cytoplasmic pattern, and ACA were independent risk factors for PBC coexistence in SS. CONCLUSIONS In addition to established risk factors, elevated IgM levels, positive ACA, and high ANA titre with cytoplasmic pattern provide clues to clinicians for the early screening and diagnosis of PBC in patients with SS.
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Affiliation(s)
- Xuan Gao
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Guangzhi Xiao
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Fengfan Yang
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Rongrong Dou
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Miao Xue
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Yingying Zhang
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Zhaohui Zheng
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China
| | - Jin Ding
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, No. 127 Changle West Rd., Xi'an, 710032, Shaanxi, China.
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Zhou L, Sun G, Chen R, Chen J, Fang S, Xu Q, Tang W, Dai R, Zhang Z, An Y, Tang X, Zhao X. An early-onset SLE patient with a novel paternal inherited BACH2 mutation. J Clin Immunol 2023:10.1007/s10875-023-01506-7. [PMID: 37148421 DOI: 10.1007/s10875-023-01506-7] [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: 02/26/2023] [Accepted: 04/27/2023] [Indexed: 05/08/2023]
Abstract
BACH2-related immunodeficiency and autoimmunity (BRIDA) is an inborn error of immunity, newly reported in 2017, presenting with symptoms of immunoglobulin deficiency and ongoing colitis. Studies using a mouse model have demonstrated that BACH2 deficiency predisposes individuals to systemic lupus erythematosus (SLE); however, no BACH2 deficiency has been reported in SLE patients. Here we describe a patient with BRIDA presenting with early-onset SLE, juvenile dermatomyositis, and IgA deficiency. Whole exome sequencing analysis of the patient and her parents revealed a novel heterozygous point mutation in BACH2, c.G1727T, resulting in substitution of a highly conserved arginine with leucine (R576L), which is predicted to be deleterious, in the patient and her father. Reduced BACH2 expression and deficient transcriptional repression of the BACH2 target, BLIMP1, were detected in PBMCs or lymphoblastoid cell lines of our patient. Notably, extreme reduction of memory B cells was detected in the patient's father, although he had no obvious symptoms. SLE symptoms and recurrent fever were relieved by treatment with prednisone combined with tofacitinib. Thus, we present the second report of BRIDA and demonstrate that BACH2 may be a monogenic cause of SLE.
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Affiliation(s)
- Lina Zhou
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Gan Sun
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ran Chen
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Junjie Chen
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Shuyu Fang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Qiling Xu
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Wenjing Tang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Division of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Rongxin Dai
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Division of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Zhiyong Zhang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Division of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yunfei An
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Division of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xuemei Tang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Division of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaodong Zhao
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China.
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9
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Cai XQ, Chen ZB, Chen HH, Zheng YQ, Yu XG. A case of IgG4-related interstitial nephritis with ureteral obstruction: case report and literature review. BMC Urol 2023; 23:67. [PMID: 37118801 PMCID: PMC10142501 DOI: 10.1186/s12894-023-01253-2] [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: 06/07/2022] [Accepted: 04/06/2023] [Indexed: 04/30/2023] Open
Abstract
BACKGROUND IgG4-related disease (IgG4-RD) is a newly discovered systemic disease that can affect any organ or tissue in the body. IgG4-related kidney disease (IgG4-RKD) is relatively rare but essential to IgG4-RD. However, there are few reports of IgG4-RD mimicking malignant ureteral tumors leading to hydronephrosis. We report here a rare case of IgG4-RD involving the ureter. CASE PRESENTATION An 87-year-old man presented to our nephrology department with anorexia, nausea, and acute kidney injury in November 2020. Urinary computed tomography (CT) examination revealed a right lower ureter mass with right renal and ureter hydronephrosis. The serum level of IgG4 was 1890 mg/dL, and the concurrently renal biopsy revealed extensive infiltration of IgG4-positive plasma cells in renal interstitium, which was diagnosed as IgG4-associated tubule-interstitial nephritis(IgG4-TIN). The renal function improved significantly after double-J tube implantation of the right ureter and moderate-dose hormone therapy. The serum IgG4 decreased to the normal range, and the right lower ureter mass almost disappeared after one year of low-dose hormone maintenance therapy. CONCLUSION IgG4-RD can present as a mass in the renal pelvis and (or) ureter, leading to hydronephrosis. Therefore, early recognition of this disease is significant. Most patients respond well to hormonal therapy to avoid surgical treatment due to misdiagnosis as malignant tumors, causing secondary harm to patients.
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Affiliation(s)
- Xiao-Qing Cai
- Department of Nephrology, People's Hospital of Yueqing, Yueqing Hospital Affiliated to Wenzhou Medical University, Yueqing, 325600, Zhejiang, China
| | - Zhi-Bin Chen
- Department of Nephrology, People's Hospital of Yueqing, Yueqing Hospital Affiliated to Wenzhou Medical University, Yueqing, 325600, Zhejiang, China
| | - Huai-Huai Chen
- Department of Nephrology, People's Hospital of Yueqing, Yueqing Hospital Affiliated to Wenzhou Medical University, Yueqing, 325600, Zhejiang, China
| | - Yan-Qiu Zheng
- Department of Nephrology, People's Hospital of Yueqing, Yueqing Hospital Affiliated to Wenzhou Medical University, Yueqing, 325600, Zhejiang, China
| | - Xu-Guang Yu
- Department of Nephrology, People's Hospital of Yueqing, Yueqing Hospital Affiliated to Wenzhou Medical University, Yueqing, 325600, Zhejiang, China.
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10
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De Masi A, Scognamiglio PL, Battista E, Netti PA, Causa F. Hydrogel particles-on-chip (HyPoC): a fluorescence micro-sensor array for IgG immunoassay. LAB ON A CHIP 2023; 23:2458-2468. [PMID: 37092599 DOI: 10.1039/d2lc01080a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Novel microparticles have generated growing interest in diagnostics for potential sensitivity and specificity in biomolecule detection and for the possibility to be integrated in a micro-system array as a lab-on-chip. Indeed, bead-based technologies integrated in microfluidics could speed up incubation steps, reduce reagent consumption and improve accessibility of diagnostic devices to non-expert users. To limit non-specific interactions with interfering molecules and to exploit the whole particle volume for bioconjugation, hydrogel microparticles, particularly polyethylene glycol-based, have emerged as promising materials to develop high-performing biosensors since their network can be functionalized to concentrate the target and improve detection. However, the limitations in positioning, trapping and mainly fine manipulation of a precise number of particles in microfluidics have largely impaired point-of-care applications. Herein, we developed an on-chip sandwich immunoassay for the detection of human immunoglobulin G in biological fluids. The detection system is based on finely engineered cleavable PEG-based microparticles, functionalized with specific monoclonal antibodies. By changing the particle number, we demonstrated tuneable specificity and sensitivity (down to 3 pM) in serum and urine. Therefore, a controlled number of hydrogel particles have been integrated in a microfluidic device for on-chip detection (HyPoC) allowing for their precise positioning and fluid exchange for incubation, washing and target detection. HyPoC dramatically decreases incubation time from 180 minutes to one minute and reduces washing volumes from 3.5 ml to 90 μL, achieving a limit of detection of 0.07 nM (with a dynamic range of 0.07-1 nM). Thus, the developed approach represents a versatile, fast and easy point-of-care testing platform for immunoassays.
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Affiliation(s)
- Alessandra De Masi
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy.
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
| | - Pasqualina Liana Scognamiglio
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy.
| | - Edmondo Battista
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy.
- Interdisciplinary Research Centre on Biomaterials (CRIB), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy.
- Interdisciplinary Research Centre on Biomaterials (CRIB), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
| | - Filippo Causa
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy.
- Interdisciplinary Research Centre on Biomaterials (CRIB), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
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11
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Jung JY, Kim JW, Lee SW, Baek WY, Kim HA, Suh CH. Increased Immunoglobulin Gamma-3 Chain C in the Serum, Saliva, and Urine of Patients with Systemic Lupus Erythematosus. Int J Mol Sci 2023; 24:ijms24086927. [PMID: 37108090 PMCID: PMC10138548 DOI: 10.3390/ijms24086927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/29/2023] Open
Abstract
Immunoglobulin gamma-3 chain C (IGHG3) levels have been detected in the blood and tissue of patients with systemic lupus erythematosus (SLE). This study aims to assess its clinical value by measuring and comparing levels of IGHG3 in different body fluids in patients with SLE. The levels of IGHG3 in saliva, serum, and urine from 181 patients with SLE and 99 healthy controls were measured and analyzed. In patients with SLE and healthy controls, salivary IGHG3 levels were 3078.9 ± 2473.8 and 1413.6 ± 1075.3 ng/mL, serum IGHG3 levels were 478.1 ± 160.9 and 364.4 ± 97.9 μg/mL, and urine IGHG3 levels were 64.0 ± 74.5 and 27.1 ± 16.2 ng/mL, respectively (all p < 0.001). Salivary IGHG3 was correlated with ESR (correlation coefficient [r], 0.173; p = 0.024). Serum IGHG3 was correlated with leukocyte count (r, -0.219; p = 0.003), lymphocyte count (r, 0.22; p = 0.03), anti-dsDNA antibody positivity (r, 0.22; p = 0.003), and C3 levels (r, -0.23; p = 0.002). Urinary IGHG3 was correlated with hemoglobin level (r, -0.183; p = 0.021), ESR (r, 0.204; p = 0.01), anti-dsDNA antibody positivity (r, 0.262; p = 0.001), C3 levels (r, -0.202; p = 0.011), and SLE disease activity index (r, 0.332; p = 0.01). Urinary IGHG3 was higher in patients with nephritis than in those without (119.5 ± 110.0 vs. 49.8 ± 54.4 ng/mL; p < 0.01). IGHG3 was increased in the saliva, serum, and urine of patients with SLE. While salivary IGHG3 was not identified to be specific to SLE disease activity, serum IGHG3 showed correlations with clinical characteristics. Urinary IGHG3 levels were associated with disease activity and renal involvement in SLE.
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Affiliation(s)
- Ju-Yang Jung
- Department of Rheumatology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Ji-Won Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Sang-Won Lee
- Department of Rheumatology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Wook-Young Baek
- Department of Rheumatology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Hyoun-Ah Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Chang-Hee Suh
- Department of Rheumatology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
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12
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Pellicano C, Colalillo A, Cusano G, Palladino A, Pellegrini M, Callà CAM, Mazzuccato G, Carnazzo V, Pignalosa S, Di Biase L, Marino M, Basile U, Rosato E. Serum Immunoglobulin G (IgG) Subclasses in a Cohort of Systemic Sclerosis Patients. J Pers Med 2023; 13:jpm13020309. [PMID: 36836543 PMCID: PMC9961548 DOI: 10.3390/jpm13020309] [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: 01/12/2023] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
OBJECTIVES To assess serum immunoglobulin G (IgG) subclasses in a cohort of systemic sclerosis (SSc) patients and to evaluate the influence of IgG subclasses in the main complications of the disease. METHODS The serum level of IgG subclasses was evaluated in 67 SSc patients and 48 healthy controls (HC), matched for sex and age. Serum samples were collected and measured IgG1-4 subclasses by turbidimetry. RESULTS SSc patients had lower median total IgG [9.88 g/l (IQR 8.18-11.42 g/l) vs. 12.09 g/l (IQR 10.24-13.54 g/l), p < 0.001], IgG1 [5.09 g/l (IQR 4.25-6.38 g/l) vs. 6.03 g/l (IQR 5.39-7.90 g/l), p < 0.001], and IgG3 [0.59 g/l (IQR 0.40-0.77 g/l) vs. 0.80 g/l (IQR 0.46-1 g/l), p < 0.05] serum levels compared to HC. The logistic regression analysis showed IgG3 as the only variable associated with the diffusing capacity of the lung for carbon monoxide (DLco) ≤60% of the predicted [OR 9.734 (CI 95%: 1.312-72.221), p < 0.05] and modified Rodnan skin score (mRSS) [OR 1.124 (CI 95%: 1.019-1.240), p < 0.05], anti-topoisomerase I [OR 0.060 (CI 95%: 0.007-0.535), p < 0.05], and IgG3 [OR 14.062 (CI 95%: 1.352-146.229), p < 0.05] as variables associated with radiological interstitial lung disease (ILD). CONCLUSION SSc patients have reduced levels of total IgG and an altered IgG subclass distribution compared to HC. Moreover, SSc patients show different serum IgG subclasses profiles according to the main involvement of the disease.
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Affiliation(s)
- Chiara Pellicano
- Department of Translational and Precision Medicine, Sapienza University of Rome, Viale dell’Università 37, 00185 Rome, Italy
| | - Amalia Colalillo
- Department of Translational and Precision Medicine, Sapienza University of Rome, Viale dell’Università 37, 00185 Rome, Italy
| | - Giuseppina Cusano
- Department of Translational and Precision Medicine, Sapienza University of Rome, Viale dell’Università 37, 00185 Rome, Italy
| | - Andrea Palladino
- Department of Translational and Precision Medicine, Sapienza University of Rome, Viale dell’Università 37, 00185 Rome, Italy
| | - Marica Pellegrini
- Department of Translational and Precision Medicine, Sapienza University of Rome, Viale dell’Università 37, 00185 Rome, Italy
| | - Cinzia Anna Maria Callà
- Dipartimento di Scienze Laboratoristiche ed Infettivologiche, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Giorgia Mazzuccato
- Dipartimento di Scienze Laboratoristiche ed Infettivologiche, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Valeria Carnazzo
- Dipartimento di Patologia Clinica, Ospedale Santa Maria Goretti, AUSL Latina, 04100 Latina, Italy
| | - Stefano Pignalosa
- Dipartimento di Patologia Clinica, Ospedale Santa Maria Goretti, AUSL Latina, 04100 Latina, Italy
| | - Luigi Di Biase
- Dipartimento di Patologia Clinica, Ospedale Santa Maria Goretti, AUSL Latina, 04100 Latina, Italy
| | - Mariapaola Marino
- Dipartimento di Medicina e Chirurgia Traslazionale, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Umberto Basile
- Dipartimento di Patologia Clinica, Ospedale Santa Maria Goretti, AUSL Latina, 04100 Latina, Italy
- Correspondence:
| | - Edoardo Rosato
- Department of Translational and Precision Medicine, Sapienza University of Rome, Viale dell’Università 37, 00185 Rome, Italy
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13
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TLR7 and IgM: Dangerous Partners in Autoimmunity. Antibodies (Basel) 2023; 12:antib12010004. [PMID: 36648888 PMCID: PMC9844493 DOI: 10.3390/antib12010004] [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: 10/09/2022] [Revised: 10/27/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
The B cell antigen receptor (BCR)-repertoire is capable of recognizing a nearly unlimited number of antigens. Inevitably, the random nature of antibody gene segment rearrangement, needed in order to provide mature B cells, will generate autoreactive specificities. Once tolerance mechanisms fail to block the activation and differentiation of autoreactive B cells, harmful autoantibodies may get secreted establishing autoimmune diseases. Besides the hallmark of autoimmunity, namely IgG autoantibodies, IgM autoantibodies are also found in many autoimmune diseases. In addition to pathogenic functions of secreted IgM the IgM-BCR expressing B cell might be the initial check-point where, in conjunction with innate receptor signals, B cell mediated autoimmunity starts it fateful course. Recently, pentameric IgM autoantibodies have been shown to contribute significantly to the pathogenesis of various autoimmune diseases, such as rheumatoid arthritis (RA), autoimmune hemolytic anemia (AIHA), pemphigus or autoimmune neuropathy. Further, recent studies suggest differences in the recognition of autoantigen by IgG and IgM autoantibodies, or propose a central role of anti-ACE2-IgM autoantibodies in severe COVID-19. However, exact mechanisms still remain to be uncovered in detail. This article focuses on summarizing recent findings regarding the importance of autoreactive IgM in establishing autoimmune diseases.
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14
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Zhang Y, Niazi B, Auda A, Chacko AA, Jarri A, Mohamed A, Ali S, Zhu H, Sirajuddin S. A Novel Presentation of Autoimmune Hepatitis with IgG1 Elevation. Case Rep Gastroenterol 2023; 17:281-286. [PMID: 37928974 PMCID: PMC10624941 DOI: 10.1159/000530517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 03/27/2023] [Indexed: 11/07/2023] Open
Abstract
Autoimmune hepatitis (AIH) is a common and debilitating pathology that has acute, subacute, and chronic presentation, requiring prompt diagnosis and early intervention. Several serologic markers are found to be associated with the pathogenesis and progression of autoimmune hepatitis, most notably antinuclear antibodies and anti-smooth muscle antibodies [Front Immunol. 2018;9:609]. In addition, AIH is also characterized by the elevation of gamma globulin levels, mainly immunoglobulin G (IgG) [World J Gastroenterol. 2015;21(1):60-83]. Although the literature has well established the presence of increased IgG levels in AIH, few studies have evaluated the subtypes of IgG and their differential levels associated with AIH. Here, we present a rare case of AIH that lacks the common serologic markers but instead reveals an elevation in IgG1 level. Our patient was subsequently placed on corticosteroids, and her symptoms quickly resolved. We intend to introduce this case to the medical community in the hope of aiding in the proper diagnosis and timely intervention of subsequent cases with similar presentations.
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Affiliation(s)
- Yujiao Zhang
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Bilal Niazi
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Auda Auda
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Angel Ann Chacko
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Amer Jarri
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Abdifatah Mohamed
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Saad Ali
- Department of Gastroenterology, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Hongfa Zhu
- Department of Pathology, HMH-Palisades Medical Center, North Bergen, NJ, USA
| | - Syed Sirajuddin
- Department of Internal Medicine, HMH-Palisades Medical Center, North Bergen, NJ, USA
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15
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Singh A, Kaileh M, De S, Mazan-Mamczarz K, Bayarsaihan D, Sen R, Roy AL. Transcription factor TFII-I fine tunes innate properties of B lymphocytes. Front Immunol 2023; 14:1067459. [PMID: 36756127 PMCID: PMC9900109 DOI: 10.3389/fimmu.2023.1067459] [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: 10/11/2022] [Accepted: 01/04/2023] [Indexed: 01/24/2023] Open
Abstract
The ubiquitously expressed transcription factor TFII-I is a multifunctional protein with pleiotropic roles in gene regulation. TFII-I associated polymorphisms are implicated in Sjögren's syndrome and Lupus in humans and, germline deletion of the Gtf2i gene in mice leads to embryonic lethality. Here we report a unique role for TFII-I in homeostasis of innate properties of B lymphocytes. Loss of Gtf2i in murine B lineage cells leads to an alteration in transcriptome, chromatin landscape and associated transcription factor binding sites, which exhibits myeloid-like features and coincides with enhanced sensitivity to LPS induced gene expression. TFII-I deficient B cells also show increased switching to IgG3, a phenotype associated with inflammation. These results demonstrate a role for TFII-I in maintaining immune homeostasis and provide clues for GTF2I polymorphisms associated with B cell dominated autoimmune diseases in humans.
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Affiliation(s)
- Amit Singh
- Laboratory of Molecular Biology and Immunology, National Institutes of Health, National Institute on Aging, Baltimore, MD, United States
| | - Mary Kaileh
- Laboratory of Molecular Biology and Immunology, National Institutes of Health, National Institute on Aging, Baltimore, MD, United States
| | - Supriyo De
- Laboratory of Genetics & Genomics, National Institutes of Health, National Institute on Aging, Baltimore, MD, United States
| | - Krystyna Mazan-Mamczarz
- Laboratory of Genetics & Genomics, National Institutes of Health, National Institute on Aging, Baltimore, MD, United States
| | - Dashzeveg Bayarsaihan
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT, United States
| | - Ranjan Sen
- Laboratory of Molecular Biology and Immunology, National Institutes of Health, National Institute on Aging, Baltimore, MD, United States
| | - Ananda L Roy
- Laboratory of Molecular Biology and Immunology, National Institutes of Health, National Institute on Aging, Baltimore, MD, United States
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16
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Li ZG, Li BC, Li ZW, Hu HY, Ma X, Cao H, Yu ZH, Dai HP, Wang J, Wang C. The Potential Diagnostic Biomarkers for the IgG Subclass in Coal Workers' Pneumoconiosis. J Immunol Res 2023; 2023:9233386. [PMID: 36959921 PMCID: PMC10030223 DOI: 10.1155/2023/9233386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 03/17/2023] Open
Abstract
Evidence suggests that exposure to coal dust increases immunoglobulin concentration. However, there is a paucity of data reporting immunoglobulin G (IgG) subclass in coal workers' pneumoconiosis (CWP). Therefore, this study intended to evaluate potential diagnostic biomarkers for the disease. CWP patients, dust-exposed workers without pneumoconiosis (DEW), and matched healthy controls (HCs) presented to the General Hospital of Datong Coal Mining Group and Occupational Disease Prevention and Treatment Hospital of Datong Coal Mining Group between May 2019 and September 2019 were recruited. The serum immunoglobulin concentration was determined by the multiplex immunoassay technique. Totally, 104 CWP patients, 109 DEWs, and 74 HCs were enrolled. Serum levels of IgG1, IgG2, IgM, and IgA were elevated in CWPs compared with those in DEWs and HCs (P < 0.05). The order of diagnostic accuracy between CWPs and DEWs depicted by the receiver operating characteristic (ROC) curve was IgG2, IgM, IgG1, IgG3, and IgA. Significantly higher IgG1/IgG3 and IgG2/IgG3 ratios were observed in the CWP group than in DEW and HC groups. Based on the IgG2/IgG3 ratio, the area under the ROC curve between CWP and DEW was 0.785 (95% CI 0.723-0.838), with a sensitivity of 73.1% and a specificity of 73.4%. Our findings suggest that IgG1, IgG2, IgM, and IgA are higher in the CWPs than DEWs and HCs. The IgG2/IgG3 ratio provides a viable alternative for the diagnosis of CWP.
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Affiliation(s)
- Zhao-Guo Li
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086 Heilongjiang, China
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100730, China
| | - Bai-Cun Li
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100730, China
| | - Zhi-Wei Li
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100730, China
| | - Hui-Yuan Hu
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100730, China
- First Clinical College, Xi'an Jiaotong University, Xi'an 710061, China
| | - Xia Ma
- Department of Pulmonary and Critical Care Medicine, General Hospital of Datong Coal Mine Group Co., Ltd, Datong 037000, China
- Department of Pulmonary and Critical Care Medicine, The First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Hong Cao
- Occupational Disease Prevention and treatment Hospital of Datong Coal Mine Group Co., Ltd, Datong 037001, China
| | - Zhi-Hua Yu
- Occupational Disease Prevention and treatment Hospital of Datong Coal Mine Group Co., Ltd, Datong 037001, China
| | - Hua-Ping Dai
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, National Center for Respiratory Medicine, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, National Clinical Research Center for Respiratory Disease, Beijing 100029, China
- National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, National Clinical Research Center for Respiratory Diseases, Beijing 100029, China
| | - Jing Wang
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100730, China
| | - Chen Wang
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086 Heilongjiang, China
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100730, China
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, National Center for Respiratory Medicine, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, National Clinical Research Center for Respiratory Disease, Beijing 100029, China
- National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, National Clinical Research Center for Respiratory Diseases, Beijing 100029, China
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17
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Vergoossen DLE, Ruiter AM, Keene KR, Niks EH, Tannemaat MR, Strijbos E, Lipka AF, van der Zijde ECJ, van Tol MJD, Bakker JA, Wevers BA, Westerberg E, Borges LS, Tong OC, Richman DP, Illa I, Punga AR, Evoli A, van der Maarel SM, Verschuuren JJ, Huijbers MG. Enrichment of serum IgG4 in MuSK myasthenia gravis patients. J Neuroimmunol 2022; 373:577978. [PMID: 36240543 DOI: 10.1016/j.jneuroim.2022.577978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/26/2022] [Accepted: 10/05/2022] [Indexed: 11/05/2022]
Abstract
Muscle-specific kinase (MuSK) myasthenia gravis (MG) is a neuromuscular autoimmune disease belonging to a growing group of IgG4 autoimmune diseases (IgG4-AIDs), in which the majority of pathogenic autoantibodies are of the IgG4 subclass. The more prevalent form of MG with acetylcholine receptor (AChR) antibodies is caused by IgG1-3 autoantibodies. A dominant role for IgG4 in autoimmune disease is intriguing due to its anti-inflammatory characteristics. It is unclear why MuSK autoantibodies are predominantly IgG4. We hypothesized that MuSK MG patients have a general predisposition to generate IgG4 responses, therefore resulting in high levels of circulating IgG4. To investigate this, we quantified serum Ig isotypes and IgG subclasses using nephelometric and turbidimetric assays in MuSK MG and AChR MG patients not under influence of immunosuppressive treatment. Absolute serum IgG1 was increased in both MuSK and AChR MG patients compared to healthy donors. In addition, only MuSK MG patients on average had significantly increased and enriched serum IgG4. Although more MuSK MG patients had elevated serum IgG4, for most the IgG4 serum levels fell within the normal range. Correlation analyses suggest MuSK-specific antibodies do not solely explain the variation in IgG4 levels. In conclusion, although serum IgG4 levels are slightly increased, the levels do not support ubiquitous IgG4 responses in MuSK MG patients as the underlying cause of dominant IgG4 MuSK antibodies.
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Affiliation(s)
- Dana L E Vergoossen
- Department of Human Genetics, Leiden University Medical Centre LUMC, Einthovenweg 20, 2300 RC Leiden, the Netherlands
| | - Annabel M Ruiter
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Kevin R Keene
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Erik H Niks
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Martijn R Tannemaat
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Ellen Strijbos
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Alexander F Lipka
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Els C Jol van der Zijde
- Willem-Alexander Children's Hospital, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Maarten J D van Tol
- Willem-Alexander Children's Hospital, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Jaap A Bakker
- Department of Clinical Chemistry, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Brigitte A Wevers
- Department of Clinical Chemistry, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Elisabet Westerberg
- Clinical Neurophysiology, Department of Medical Sciences, Uppsala University, Akademiska sjukhuset, Ingång 85, 3rd floor, 751 85 Uppsala, Sweden
| | - Lúcia S Borges
- Department of Neurology, University of California Davis, 1515 Newton Court, Davis, CA 95618, USA
| | - Olivia C Tong
- Department of Neurology, University of California Davis, 1515 Newton Court, Davis, CA 95618, USA
| | - David P Richman
- Department of Neurology, University of California Davis, 1515 Newton Court, Davis, CA 95618, USA
| | - Isabel Illa
- Neuromuscular diseases Neurology department, Hospital Sant Pau UAB, Avenida Pare Claret N° 167, Barcelona 08025, Spain
| | - Anna Rostedt Punga
- Clinical Neurophysiology, Department of Medical Sciences, Uppsala University, Akademiska sjukhuset, Ingång 85, 3rd floor, 751 85 Uppsala, Sweden
| | - Amelia Evoli
- Department of Neurology, Università Cattolica del Sacro Cuore, Largo A. Gemelli 1, 00168 Rome, Italy
| | - Silvère M van der Maarel
- Department of Human Genetics, Leiden University Medical Centre LUMC, Einthovenweg 20, 2300 RC Leiden, the Netherlands
| | - Jan J Verschuuren
- Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Maartje G Huijbers
- Department of Human Genetics, Leiden University Medical Centre LUMC, Einthovenweg 20, 2300 RC Leiden, the Netherlands; Department of Neurology, Leiden University Medical Centre LUMC, Albinusdreef 2, 2333 ZA Leiden, the Netherlands.
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18
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van Eeden C, Osman MS, Cohen Tervaert JW. Fatigue in ANCA-associated vasculitis (AAV) and systemic sclerosis (SSc): similarities with Myalgic encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). A critical review of the literature. Expert Rev Clin Immunol 2022; 18:1049-1070. [PMID: 36045606 DOI: 10.1080/1744666x.2022.2116002] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Persistent debilitating fatigue is a frequent complaint in patients with systemic autoimmune rheumatic diseases (SARDs). Fatigue is, however, frequently overlooked in the clinic, and patients who successfully achieve remission of their disease, often still have a lowered quality of life due to its persistence. How similar is this fatigue to Myalgic encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS), what is this fatigue associated with, and what tools/approaches (if any), have resulted in the improvement of fatigue in these patients is poorly defined. AREAS COVERED Similarities between the pathophysiology of ME/CFS, systemic sclerosis (SSc) and primary systemic vasculitides (PSV) are discussed, followed by an in-depth review of the prevalence and correlates of fatigue in these diseases. The authors reviewed literature from MEDLINE, APA PsycInfo, Embase, and CINAHL. EXPERT OPINION Persistent fatigue is a prominent feature in SARDs and may not be associated with components commonly associated with disease activity and/or progression. Immune and metabolic commonalities exist between ME/CFS, SSc, and PSVs - suggesting that common pathways inherent to the diseases and fatigue may be present. We suggest that patients with features of ME/CFS need to be identified by treating physicians, as they may require alternative approaches to therapy to improve their quality of life.
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Affiliation(s)
- Charmaine van Eeden
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Mohammed S Osman
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Jan Willem Cohen Tervaert
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.,School for Mental Health and Neurosciences (MHeNs), Maastricht University, Maastricht, Netherlands
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Taeschler P, Cervia C, Zurbuchen Y, Hasler S, Pou C, Tan Z, Adamo S, Raeber ME, Bächli E, Rudiger A, Stüssi‐Helbling M, Huber LC, Brodin P, Nilsson J, Probst‐Müller E, Boyman O. Autoantibodies in COVID-19 correlate with antiviral humoral responses and distinct immune signatures. Allergy 2022; 77:2415-2430. [PMID: 35364615 PMCID: PMC9111424 DOI: 10.1111/all.15302] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/08/2022] [Accepted: 03/20/2022] [Indexed: 01/08/2023]
Abstract
BACKGROUND Several autoimmune features occur during coronavirus disease 2019 (COVID-19), with possible implications for disease course, immunity, and autoimmune pathology. In this study, we longitudinally screened for clinically relevant systemic autoantibodies to assess their prevalence, temporal trajectory, and association with immunity, comorbidities, and severity of COVID-19. METHODS We performed highly sensitive indirect immunofluorescence assays to detect antinuclear antibodies (ANA) and antineutrophil cytoplasmic antibodies (ANCA), along with serum proteomics and virome-wide serological profiling in a multicentric cohort of 175 COVID-19 patients followed up to 1 year after infection, eleven vaccinated individuals, and 41 unexposed controls. RESULTS Compared with healthy controls, similar prevalence and patterns of ANA were present in patients during acute COVID-19 and recovery. However, the paired analysis revealed a subgroup of patients with transient presence of certain ANA patterns during acute COVID-19. Furthermore, patients with severe COVID-19 exhibited a high prevalence of ANCA during acute disease. These autoantibodies were quantitatively associated with higher SARS-CoV-2-specific antibody titers in COVID-19 patients and in vaccinated individuals, thus linking autoantibody production to increased antigen-specific humoral responses. Notably, the qualitative breadth of antibodies cross-reactive with other coronaviruses was comparable in ANA-positive and ANA-negative individuals during acute COVID-19. In autoantibody-positive patients, multiparametric characterization demonstrated an inflammatory signature during acute COVID-19 and alterations of the B-cell compartment after recovery. CONCLUSION Highly sensitive indirect immunofluorescence assays revealed transient autoantibody production during acute SARS-CoV-2 infection, while the presence of autoantibodies in COVID-19 patients correlated with increased antiviral humoral immune responses and inflammatory immune signatures.
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Affiliation(s)
| | - Carlo Cervia
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
| | - Yves Zurbuchen
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
| | - Sara Hasler
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
| | - Christian Pou
- Science for Life LaboratoryDepartment of Women's and Children's HealthKarolinska InstitutetSolnaSweden
| | - Ziyang Tan
- Science for Life LaboratoryDepartment of Women's and Children's HealthKarolinska InstitutetSolnaSweden
| | - Sarah Adamo
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
| | - Miro E. Raeber
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
| | - Esther Bächli
- Clinic for Internal MedicineHirslanden Klinik St. AnnaLucerneSwitzerland
| | - Alain Rudiger
- Department of MedicineLimmattal HospitalSchlierenSwitzerland
| | | | - Lars C. Huber
- Clinic for Internal MedicineCity Hospital Triemli ZurichZurichSwitzerland
| | - Petter Brodin
- Science for Life LaboratoryDepartment of Women's and Children's HealthKarolinska InstitutetSolnaSweden
- Pediatric RheumatologyKarolinska University HospitalSolnaSweden
- Department of Immunology and InflammationImperial College LondonLondonUK
| | - Jakob Nilsson
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
| | | | - Onur Boyman
- Department of ImmunologyUniversity Hospital ZurichZurichSwitzerland
- Faculty of MedicineUniversity of ZurichZurichSwitzerland
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20
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Sanges S, Guerrier T, Duhamel A, Guilbert L, Hauspie C, Largy A, Balden M, Podevin C, Lefèvre G, Jendoubi M, Speca S, Hachulla É, Sobanski V, Dubucquoi S, Launay D. Soluble markers of B cell activation suggest a role of B cells in the pathogenesis of systemic sclerosis-associated pulmonary arterial hypertension. Front Immunol 2022; 13:954007. [PMID: 35967377 PMCID: PMC9374103 DOI: 10.3389/fimmu.2022.954007] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Soluble markers of B cell activation are interesting diagnostic and prognostic tools in autoimmune diseases. Data in systemic sclerosis (SSc) are scarce and few studies focused on their association with disease characteristics. Methods 1. Serum levels of 14 B cell biomarkers (β2-microglobulin, rheumatoid factor (RF), immunoglobulins (Ig) G, IgA, IgM, BAFF, APRIL, soluble (s)TACI, sBCMA sCD21, sCD23, sCD25, sCD27, CXCL13) were measured in SSc patients and healthy controls (HC). 2. Associations between these biomarkers and SSc characteristics were assessed. 3. The pathophysiological relevance of identified associations was explored by studying protein production in B cell culture supernatant. Results In a discovery panel of 80 SSc patients encompassing the broad spectrum of disease manifestations, we observed a higher frequency of RF positivity, and increased levels of β2-microglobulin, IgG and CXCL13 compared with HC. We found significant associations between several biomarkers and SSc characteristics related to disease phenotype, activity and severity. Especially, serum IgG levels were associated with pulmonary hypertension (PH); β2-microglobulin with Nt-pro-BNP and DLCO; and BAFF with peak tricuspid regurgitation velocity (TRV). In a validation cohort of limited cutaneous SSc patients without extensive ILD, we observed lower serum IgG levels, and higher β2-microglobulin, sBCMA, sCD23 and sCD27 levels in patients with pulmonary arterial hypertension (PAH). BAFF levels strongly correlated with Nt-pro-BNP levels, FVC/DLCO ratio and peak TRV in SSc-PAH patients. Cultured SSc B cells showed increased production of various angiogenic factors (angiogenin, angiopoietin-1, VEGFR-1, PDGF-AA, MMP-8, TIMP-1, L-selectin) and decreased production of angiopoietin-2 compared to HC. Conclusion Soluble markers of B cell activation could be relevant tools to assess organ involvements, activity and severity in SSc. Their associations with PAH could plead for a role of B cell activation in the pathogenesis of pulmonary microangiopathy. B cells may contribute to SSc vasculopathy through production of angiogenic mediators.
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Affiliation(s)
- Sébastien Sanges
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Département de Médecine Interne et Immunologie Clinique, Lille, France
- Centre National de Référence Maladies Auto-immunes Systémiques Rares du Nord et Nord-Ouest de France (CeRAINO), Lille, France
- Health Care Provider of the European Reference Network on Rare Connective Tissue and Musculoskeletal Diseases Network (ReCONNET), Lille, France
| | - Thomas Guerrier
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Institut d’Immunologie, Lille, France
| | - Alain Duhamel
- Univ. Lille, CHU Lille, ULR2694 – METRICS: Évaluation des technologies de santé et des pratiques médicales, Lille, France
| | - Lucile Guilbert
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Institut d’Immunologie, Lille, France
| | - Carine Hauspie
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Institut d’Immunologie, Lille, France
| | - Alexis Largy
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
| | - Maïté Balden
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Institut d’Immunologie, Lille, France
| | - Céline Podevin
- CHU Lille, Département de Médecine Interne et Immunologie Clinique, Lille, France
| | - Guillaume Lefèvre
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Institut d’Immunologie, Lille, France
| | - Manel Jendoubi
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
| | - Silvia Speca
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
| | - Éric Hachulla
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Département de Médecine Interne et Immunologie Clinique, Lille, France
- Centre National de Référence Maladies Auto-immunes Systémiques Rares du Nord et Nord-Ouest de France (CeRAINO), Lille, France
- Health Care Provider of the European Reference Network on Rare Connective Tissue and Musculoskeletal Diseases Network (ReCONNET), Lille, France
| | - Vincent Sobanski
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Département de Médecine Interne et Immunologie Clinique, Lille, France
- Centre National de Référence Maladies Auto-immunes Systémiques Rares du Nord et Nord-Ouest de France (CeRAINO), Lille, France
- Health Care Provider of the European Reference Network on Rare Connective Tissue and Musculoskeletal Diseases Network (ReCONNET), Lille, France
| | - Sylvain Dubucquoi
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Institut d’Immunologie, Lille, France
| | - David Launay
- Univ. Lille, U1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
- INSERM, Lille, France
- CHU Lille, Département de Médecine Interne et Immunologie Clinique, Lille, France
- Centre National de Référence Maladies Auto-immunes Systémiques Rares du Nord et Nord-Ouest de France (CeRAINO), Lille, France
- Health Care Provider of the European Reference Network on Rare Connective Tissue and Musculoskeletal Diseases Network (ReCONNET), Lille, France
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Sołkiewicz K, Kacperczyk M, Krotkiewski H, Jędryka M, Kratz EM. O-Glycosylation Changes in Serum Immunoglobulin G Are Associated with Inflammation Development in Advanced Endometriosis. Int J Mol Sci 2022; 23:ijms23158087. [PMID: 35897676 PMCID: PMC9330708 DOI: 10.3390/ijms23158087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
Endometriosis is a gynecological disease, the pathogenesis of which seems to be directly related to inflammatory processes with an immune basis. Our study aimed to analyze the O-glycosylation of native serum IgG and IgG isolated from sera of women with advanced endometriosis, without endometriosis but with benign gynecological diseases, and from a control group of healthy women, in the context of its utility for differentiation of advanced endometriosis from the other two groups of women studied. For the analysis of serum IgG O-glycosylation and the expression of multi-antennary N-glycans, lectin-ELISA with lectins specific to O-glycans (MPL, VVL, and Jacalin) and highly branched N-glycans (PHA-L) was used. The relative reactivities of isolated serum IgG O-linked glycans with specific lectins as well as the MPL/VVL O-glycosylation ratio were significantly higher in patients with advanced endometriosis and those with other gynecological diseases when compared to the control group of healthy women. We also showed significantly higher expression of PHA-L-reactive multi-antennary N-glycans in isolated IgG in the advanced endometriosis and the non-endometriosis groups in comparison to the control group. Additionally, significantly higher expression of Jacalin-reactive O-glycans in isolated IgG was observed in the non-endometriosis than in the advanced endometriosis group. The results of the ROC curve and cluster analysis additionally confirmed that the lectin-based analysis of isolated serum IgG O-glycosylation and the expression of highly branched N-glycans may help distinguish women with advanced endometriosis from healthy women. Moreover, the analysis of the expression of Jacalin-reactive i-IgG O-glycans may be helpful in differentiation between women with advanced endometriosis and patients with other gynecological diseases with an inflammatory background. In the case of non-endometriosis patients, the observed differences were most probably caused by increased expression of core 3 type O-glycans.
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Affiliation(s)
- Katarzyna Sołkiewicz
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
- Correspondence: (K.S.); (E.M.K.); Tel.: +48-71-784-01-52 (K.S.); +48-71-784-01-60 (E.M.K.)
| | - Monika Kacperczyk
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
| | - Hubert Krotkiewski
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wroclaw, Poland;
| | - Marcin Jędryka
- Department of Oncology, Gynecological Oncology Clinic, Faculty of Medicine, Wroclaw Medical University, Hirszfeld Square 12, 53-413 Wroclaw, Poland;
- Department of Oncological Gynecology, Wroclaw Comprehensive Cancer Center, Hirszfeld Square 12, 53-413 Wroclaw, Poland
| | - Ewa Maria Kratz
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
- Correspondence: (K.S.); (E.M.K.); Tel.: +48-71-784-01-52 (K.S.); +48-71-784-01-60 (E.M.K.)
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22
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Lee YJ, Lin YC, Liao CC, Chang YS, Huang YH, Tsai IJ, Chen JH, Lin SH, Lin YF, Hsieh TW, Chen YS, Wu CY, Chang CC, Lin CY. Using anti-malondialdehyde-modified peptide adduct autoantibodies in serum of taiwanese women to diagnose primary Sjogren's syndrome. Clin Biochem 2022; 108:27-41. [PMID: 35843269 DOI: 10.1016/j.clinbiochem.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/20/2022] [Accepted: 07/11/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Sjogren's syndrome (SS) is a systemic autoimmune disease featured with a dry mouth and dry eyes. Several autoantibodies, including anti-SSA, anti-SSB, antinuclear antibodies can be detected in patients with SS. Oxidation-specific epitopes (OSEs) can be formed from malondialdehyde (MDA)-modified protein adducts and trigger chronic inflammation. In this study, our purposes were used serum levels of anti-MDA-modified peptide adducts autoantibodies to evaluate predictive performance by machine learning algorithms in primary Sjögren's syndrome (pSS) and assess the association between pSS and healthy controls. METHODS Three novel MDA-modified peptide adducts, including immunoglobulin (Ig) gamma heavy chain 1 (IGHG1)102-131, complement factor H (CFAH)1045-1062, and Ig heavy constant alpha 1 (IGHA1)307-327 were identified and validated. Serum levels of protein, MDA-modified protein adducts, MDA, and autoantibodies recognizing unmodified peptides and MDA-modified peptide adducts were measured. Statistically significance in correlations and odds ratios (ORs) were estimated. RESULTS The random forest classifier utilized autoantibodies combination composed of IgM anti-IGHG1102-131, IgM anti-IGHG1102-131 MDA and IgM anti-IGHA1307-327 achieved predictive performance as an accuracy of 88.0%, a sensitivity of 93.7%, and a specificity of 84.4% which may be as potential diagnostic biomarkers to differentiate patients with pSS from rheumatoid arthritis (RA), and secondary SS in RA and HCs. CONCLUSIONS Our findings imply that low levels of IgA anti-IGHG1102-131 MDA (OR = 2.646), IgA anti-IGHG1102-131 (OR = 2.408), IgA anti-CFAH1045-1062 (OR = 2.571), and IgA anti-IGHA1307-327 (OR = 2.905) may denote developing risks of pSS, respectively.
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Affiliation(s)
- Yuarn-Jang Lee
- Division of Infectious Diseases, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan; Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Ying-Chin Lin
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan; Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Department of Geriatric Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Chen-Chung Liao
- Proteomics Research Center, National Yang-Ming University, Taipei 112, Taiwan
| | - Yu-Sheng Chang
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Hui Huang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - I-Jung Tsai
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Jin-Hua Chen
- Graduate Institute of Data Science, College of Management, Taipei Medical University, Taipei 11031, Taiwan; Statistics Center, Office of Data Science, Taipei Medical University, Taipei 11031, Taiwan
| | - Sheng-Hong Lin
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yi-Fang Lin
- Department of Laboratory Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Ting-Wan Hsieh
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Department of Laboratory Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Yi-Su Chen
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
| | - Chih-Yin Wu
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
| | - Chi-Ching Chang
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Division of Rheumatology, Immunology and Allergy, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan.
| | - Ching-Yu Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
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23
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Jones RJ, De Bie EMDD, Groves E, Zalewska KI, Swietlik EM, Treacy CM, Martin JM, Polwarth G, Li W, Guo J, Baxendale HE, Coleman S, Savinykh N, Coghlan JG, Corris PA, Howard LS, Johnson MK, Church C, Kiely DG, Lawrie A, Lordan JL, Mackenzie Ross RV, Pepke Zaba J, Wilkins MR, Wort SJ, Fiorillo E, Orrù V, Cucca F, Rhodes CJ, Gräf S, Morrell NW, McKinney EF, Wallace C, Toshner M. Autoimmunity Is a Significant Feature of Idiopathic Pulmonary Arterial Hypertension. Am J Respir Crit Care Med 2022; 206:81-93. [PMID: 35316153 PMCID: PMC7613913 DOI: 10.1164/rccm.202108-1919oc] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 03/16/2022] [Indexed: 12/15/2022] Open
Abstract
Rationale: Autoimmunity is believed to play a role in idiopathic pulmonary arterial hypertension (IPAH). It is not clear whether this is causative or a bystander of disease and if it carries any prognostic or treatment significance. Objectives: To study autoimmunity in IPAH using a large cross-sectional cohort. Methods: Assessment of the circulating immune cell phenotype was undertaken using flow cytometry, and the profile of serum immunoglobulins was generated using a standardized multiplex array of 19 clinically validated autoantibodies in 473 cases and 946 control subjects. Additional glutathione S-transferase fusion array and ELISA data were used to identify a serum autoantibody to BMPR2 (bone morphogenetic protein receptor type 2). Clustering analyses and clinical correlations were used to determine associations between immunogenicity and clinical outcomes. Measurements and Main Results: Flow cytometric immune profiling demonstrates that IPAH is associated with an altered humoral immune response in addition to raised IgG3. Multiplexed autoantibodies were significantly raised in IPAH, and clustering demonstrated three distinct clusters: "high autoantibody," "low autoantibody," and a small "intermediate" cluster exhibiting high concentrations of ribonucleic protein complex. The high-autoantibody cluster had worse hemodynamics but improved survival. A small subset of patients demonstrated immunoglobulin reactivity to BMPR2. Conclusions: This study establishes aberrant immune regulation and presence of autoantibodies as key features in the profile of a significant proportion of patients with IPAH and is associated with clinical outcomes.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Wei Li
- Heart and Lung Research Institute
| | | | | | | | - Natalia Savinykh
- Cambridge Biomedical Research Centre Phenotyping Hub, Department of Medicine, University of Cambridge
| | - J. Gerry Coghlan
- Royal Free London National Health Service Foundation Trust, London, United Kingdom
| | | | | | - Martin K. Johnson
- Scottish Pulmonary Vascular Unit, Golden Jubilee National Hospital, Glasgow, United Kingdom
| | - Colin Church
- Scottish Pulmonary Vascular Unit, Golden Jubilee National Hospital, Glasgow, United Kingdom
| | - David G. Kiely
- Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Allan Lawrie
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | | | | | | | - Martin R. Wilkins
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | | | - Edoardo Fiorillo
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Cagliari, Italy
| | - Valeria Orrù
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Cagliari, Italy
| | | | - Christopher J. Rhodes
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | | | | | - Eoin F. McKinney
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Chris Wallace
- Heart and Lung Research Institute
- Medical Research Council Biostatistics Unit
- Department of Medicine, University of Cambridge, Addenbrookes Hospital, Hills Road, Cambridge, United Kingdom
| | - Mark Toshner
- Heart and Lung Research Institute
- Royal Papworth Hospital, and
| | - the UK National Cohort Study of Idiopathic and Heritable PAH Consortium
- Heart and Lung Research Institute
- Cambridge Biomedical Research Centre Phenotyping Hub, Department of Medicine, University of Cambridge
- Royal Papworth Hospital, and
- Medical Research Council Biostatistics Unit
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, Cambridge, United Kingdom
- Royal Free London National Health Service Foundation Trust, London, United Kingdom
- Freeman Hospital, Newcastle-upon-Tyne, United Kingdom
- Hammersmith Hospital, London, United Kingdom
- Scottish Pulmonary Vascular Unit, Golden Jubilee National Hospital, Glasgow, United Kingdom
- Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
- Royal United Hospitals Bath National Health Service Foundation Trust, Bath, United Kingdom
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
- Royal Brompton Hospital, London, United Kingdom
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Cagliari, Italy
- University of Sassari, Sassari, Italy; and
- Department of Medicine, University of Cambridge, Addenbrookes Hospital, Hills Road, Cambridge, United Kingdom
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24
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Sanders EC, Sen SR, Gelston AA, Santos AM, Luo X, Bhuvan K, Tang DY, Raston CL, Weiss GA. Under-5-Minute Immunoblot Assays by Vortex Fluidic Device Acceleration. Angew Chem Int Ed Engl 2022; 61:e202202021. [PMID: 35333430 PMCID: PMC9156566 DOI: 10.1002/anie.202202021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Indexed: 11/09/2022]
Abstract
Unlocking the potential of personalized medicine in point-of-care settings requires a new generation of biomarker and proteomic assays. Ideally, assays could inexpensively perform hundreds of quantitative protein measurements in parallel at the bedsides of patients. This goal greatly exceeds current capabilities. Furthermore, biomarker assays are often challenging to translate from benchtop to clinic due to difficulties achieving and assessing the necessary selectivity, sensitivity, and reproducibility. To address these challenges, we developed an efficient (<5 min), robust (comparatively lower CVs), and inexpensive (decreasing reagent use and cost by >70 %) immunoassay method. Specifically, the immunoblot membrane is dotted with the sample and then developed in a vortex fluidic device (VFD) reactor. All assay steps-blocking, binding, and washing-leverage the unique thin-film microfluidics of the VFD. The approach can accelerate direct, indirect, and sandwich immunoblot assays. The applications demonstrated include assays relevant to both the laboratory and the clinic.
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Affiliation(s)
- Emily C. Sanders
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Sanjana R. Sen
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Aidan A. Gelston
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Alicia M. Santos
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Xuan Luo
- Flinders Institute for Nanoscale Sciences and Technology, Flinders University, Adelaide, SA 5042 (AU)
| | - Keertna Bhuvan
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Derek Y. Tang
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Colin L. Raston
- Flinders Institute for Nanoscale Sciences and Technology, Flinders University, Adelaide, SA 5042 (AU)
| | - Gregory A. Weiss
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
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25
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Lee H, Kovacs C, Mattman A, Hollander Z, Chen V, Ng R, Leung JM, Sin DD. The impact of IgG subclass deficiency on the risk of mortality in hospitalized patients with COPD. Respir Res 2022; 23:141. [PMID: 35641962 PMCID: PMC9158163 DOI: 10.1186/s12931-022-02052-3] [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: 11/11/2021] [Accepted: 05/17/2022] [Indexed: 11/10/2022] Open
Abstract
Background Immunoglobulin G (IgG) deficiency increases the risk of acute exacerbations and mortality in chronic obstructive pulmonary disease (COPD). However, the impact of IgG subclass deficiency on mortality in COPD is unknown. Here, we determined which IgG subclass, if any, is associated with increased risk of mortality in COPD.
Methods We measured serum IgG subclass concentrations of 489 hospitalized patients with COPD who were enrolled in the Rapid Transition Program (clinicaltrials.gov identifier NCT02050022). To evaluate the impact of IgG subclass deficiency on 1-year mortality, Cox proportional hazards regression analyses were performed with adjustments for potential confounders. Results Deficiencies in IgG1, IgG2, IgG3, and IgG4 were present in 1.8%, 12.1%, 4.3%, and 11.2% of patients, respectively. One-year mortality was 56% in patients with IgG1 deficiency, 27% in IgG2 deficiency, 24% in IgG3 deficiency, and 31% in IgG4 deficiency. Cox proportional modeling showed that IgG1 and IgG4 deficiencies increased the 1-year mortality risk with an adjusted hazard ratio of 3.92 (95% confidence interval [CI] = 1.55–9.87) and 1.74 (95% CI = 1.02–2.98), respectively. Neither IgG2 nor IgG3 deficiency significantly increased 1-year mortality. Two or more IgG subclass deficiencies were observed in 5.3%. Patients with 2 or more IgG subclass deficiencies had a higher 1-year mortality than those without any deficiencies (46.2% vs. 19.7%, p < 0.001), with an adjusted hazard ratio of 2.22 (95% CI = 1.18–4.17). Conclusions IgG1 and IgG4 deficiency was observed in 1.8% and 11.2% of hospitalized patients with COPD, respectively, and these deficiencies were associated with a significantly increased risk of 1-year mortality. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02052-3.
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Affiliation(s)
- Hyun Lee
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada.,Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Cara Kovacs
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada
| | - Andre Mattman
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Zsuzsanna Hollander
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada.,PROOF Centre of Excellence, University of British Columbia, Vancouver, BC, Canada
| | - Virginia Chen
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada.,PROOF Centre of Excellence, University of British Columbia, Vancouver, BC, Canada
| | - Raymond Ng
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada.,PROOF Centre of Excellence, University of British Columbia, Vancouver, BC, Canada
| | - Janice M Leung
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada.,Division of Respiratory Medicine, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Don D Sin
- Centre for Heart Lung Innovation, University of British Columbia, St. Paul's Hospital, Vancouver, BC, Canada. .,Division of Respiratory Medicine, Department of Medicine, University of British Columbia, Vancouver, BC, Canada.
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26
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Park JK, Kim D, Lee JM, Lee KH, Lee KT, Park JK, Lee JK. Clinical Utility of Personalized Serum IgG Subclass Ratios for the Differentiation of IgG4-Related Sclerosing Cholangitis (IgG4-SC) from Primary Sclerosing Cholangitis (PSC) and Cholangiocarcinoma (CCA). J Pers Med 2022; 12:jpm12060855. [PMID: 35743640 PMCID: PMC9225113 DOI: 10.3390/jpm12060855] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/10/2022] [Accepted: 05/21/2022] [Indexed: 11/16/2022] Open
Abstract
Background: The differential diagnosis of immunoglobulin G4-sclerosing cholangitis (IgG4-SC) from primary sclerosing cholangitis (PSC) or cholangiocarcinoma (CCA) is important. In this study, we aimed to find the best combinations of serum IgG subclasses and IgG4 levels for differentiating IgG4-SC from PSC or CCA. Methods: In total, 31 patients with IgG4-SC, 27 patients with PSC, and 40 patients with CCA were enrolled from 2003 to 2017 at a single tertiary referral center. We retrospectively assessed the IgG4, IgG4/IgG1, IgG4/(IgG1+IgG3), and (IgG4+IgG2)/(IgG1+IgG3) in each of the patients. ROC curves were established to obtain the optimal cutoff value for each parameter. McNemar’s test was used to compare the sensitivities, specificities, and accuracies of diagnostic algorithms. Results: In differentiating IgG4-SC from PSC, the accuracies of IgG4/IgG1 ≥ 0.087 and of IgG4/(IgG1+IgG3) ≥ 0.081 were significantly higher than that of IgG4 ≥ 135 mg/dL alone (78% vs. 66%, p = 0.025). Serum IgG4 ≥ 52 mg/dL showed the best accuracy for differentiation of IgG4-SC from CCA, with a sensitivity and specificity of 80% and 82%, respectively, but this was statistically not significant (p = 0.405). Conclusions: The serum IgG4/IgG1 or IgG4/(IgG1+IgG3) level may help to differentiate IgG4-SC from PSC. IgG4 alone is the most accurate serologic marker for the differentiation of IgG4-SC from CCA.
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Affiliation(s)
- Jae Keun Park
- Department of Internal Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul 07441, Korea;
| | - Dongwuk Kim
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (D.K.); (J.M.L.); (K.H.L.); (K.T.L.); (J.K.P.)
| | - Jeong Min Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (D.K.); (J.M.L.); (K.H.L.); (K.T.L.); (J.K.P.)
| | - Kwang Hyuck Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (D.K.); (J.M.L.); (K.H.L.); (K.T.L.); (J.K.P.)
- Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul 16419, Korea
| | - Kyu Taek Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (D.K.); (J.M.L.); (K.H.L.); (K.T.L.); (J.K.P.)
| | - Joo Kyung Park
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (D.K.); (J.M.L.); (K.H.L.); (K.T.L.); (J.K.P.)
| | - Jong Kyun Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; (D.K.); (J.M.L.); (K.H.L.); (K.T.L.); (J.K.P.)
- Correspondence:
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27
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Lekhraj R, Lalezari S, Aguilan JT, Qin J, Sidoli S, Mowrey W, Gollamudi S, Lalezari P. Altered abundances of human immunoglobulin M and immunoglobulin G subclasses in Alzheimer's disease frontal cortex. Sci Rep 2022; 12:6934. [PMID: 35484384 PMCID: PMC9050688 DOI: 10.1038/s41598-022-10793-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 04/13/2022] [Indexed: 11/16/2022] Open
Abstract
The immune system has been described to play a role in the development of Alzheimer’s disease (AD), but the distribution of immunoglobulins and their subclasses in brain tissue has not been explored. In this study, examination of pathologically diagnosed frontal cortex gray matter revealed significantly higher levels of IgM and IgG in late-stage AD (Braak and Braak stages V and VI) compared to age-matched controls. While levels of IgG2 and IgG4 constant region fragments were higher in late-stage AD, concentration of native–state IgG4 with free Fc regions was increased in AD III and VI. RNA analysis did not support parenchymal B-cell production of IgG4 in AD III and V, indicating possible peripheral or meningeal B-cell involvement. Changes in the profile of IgM, IgG and IgG subclasses in AD frontal cortex may provide insight into understanding disease pathogenesis and progression.
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Affiliation(s)
- Rukmani Lekhraj
- Neurological Surgery Research Laboratory, Department of Neurosurgery, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Shirin Lalezari
- Neurological Surgery Research Laboratory, Department of Neurosurgery, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jennifer T Aguilan
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jiyue Qin
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Simone Sidoli
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Wenzhu Mowrey
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Seema Gollamudi
- Neurological Surgery Research Laboratory, Department of Neurosurgery, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Parviz Lalezari
- Neurological Surgery Research Laboratory, Department of Neurosurgery, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA.
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28
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Barton JC, Barton JC, Bertoli LF. Hydroxychloroquine Therapy and Serum Immunoglobulin Levels in Women with IgG Subclass Deficiency and Systemic Lupus Erythematosus, Sjögren Syndrome, and Rheumatoid Arthritis: A Retrospective Study. Arch Immunol Ther Exp (Warsz) 2022; 70:14. [PMID: 35403913 DOI: 10.1007/s00005-022-00652-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 03/08/2022] [Indexed: 11/30/2022]
Abstract
Hydroxychloroquine (HCQ) therapy decreased immunoglobulin (Ig) levels in patients with Sjögren syndrome (SS) and rheumatoid arthritis (RA) in previous studies. We found no report of Ig levels of women with IgG subclass deficiency (IgGSD) and systemic lupus erythematosus (SLE), SS, or RA treated with HCQ. We retrospectively evaluated IgG, IgG subclass, IgA, and IgM levels and other characteristics of women at IgGSD diagnosis who did and did not take HCQ for SLE, SS, or RA. There were 132 women (48 subnormal IgG1 only, 49 combined subnormal IgG1/IgG3, and 35 subnormal IgG3 only). Mean age was 49 ± 13 years. Twenty-two women with SLE, SS, RA, or combination thereof reported HCQ ≥ 200 mg/day ≥ 6 months. In each IgGSD subtype, median Ig levels of women who took HCQ were not significantly lower than those of women who did not take HCQ. Women with combined subnormal IgG1/IgG3 who took HCQ had greater median IgG2 than women who did not take HCQ (4.89 g/L (range 4.43, 4.94) vs. 2.57 g/L (1.21, 6.44), respectively; p = 0.0123). Regressions on IgG1, IgG2, and IgG3 revealed positive associations with HCQ therapy (p = 0.0043, 0.0037, and 0.0139, respectively). There were no significant Ig associations with age, SLE, SS, or RA as independent variables. HCQ therapy of SLE, SS, or RA in women with IgGSD was not associated with significantly lower IgG, IgG subclass, IgA, or IgM levels. IgG1, IgG2, and IgG3 were positively associated with HCQ therapy, after adjustment for other variables.
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Affiliation(s)
- James C Barton
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. .,Southern Iron Disorders Center, Birmingham, AL, USA. .,Department of Medicine, Brookwood Medical Center, Birmingham, AL, USA.
| | | | - Luigi F Bertoli
- Department of Medicine, Brookwood Medical Center, Birmingham, AL, USA
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29
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Weiss GA, Sanders EC, Sen SR, Gelston AA, Santos AM, Luo X, Bhuvan K, Tang DY, Raston CL. Under‐5‐Minute Immunoblot Assays by Vortex Fluidic Device Acceleration. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gregory Alan Weiss
- University of California, Irvine Department of Chemistry 1102 Natural Sciences 2 92697-2025 Irvine UNITED STATES
| | | | - Sanjana R. Sen
- University of California Irvine Molecular Biology and Biochemistry UNITED STATES
| | | | | | - Xuan Luo
- Flinders University aFlinders Institute for Nanoscale Science and Technology AUSTRALIA
| | | | - Derek Y. Tang
- University of California Irvine Chemistry UNITED STATES
| | - Colin L. Raston
- Flinders University aFlinders Institute for Nanoscale Science and Technology UNITED STATES
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30
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Autoreactive antibodies control blood glucose by regulating insulin homeostasis. Proc Natl Acad Sci U S A 2022; 119:2115695119. [PMID: 35131852 PMCID: PMC8833180 DOI: 10.1073/pnas.2115695119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2021] [Indexed: 12/31/2022] Open
Abstract
The random nature of antibody repertoire generation includes the potential of producing autoantibodies recognizing self-structures. It is believed that establishing immunological tolerance and prevention of autoimmune diseases require the removal of antibody specificities recognizing self. Using insulin as a common and physiologically important autoantigen, we show that anti-insulin antibodies associated with autoimmune diabetes can readily be detected in mice and humans and are involved in the physiological regulation of blood glucose levels. Importantly, human high-affinity, anti-insulin IgM antibodies protect insulin from autoimmune degradation by anti-insulin IgG antibodies. Thus, in contrast to the proposed negative selection, self-recognition and the production of highly autoreactive IgM antibodies are important for tolerance induction. Homeostasis of metabolism by hormone production is crucial for maintaining physiological integrity, as disbalance can cause severe metabolic disorders such as diabetes mellitus. Here, we show that antibody-deficient mice and immunodeficiency patients have subphysiological blood glucose concentrations. Restoring blood glucose physiology required total IgG injections and insulin-specific IgG antibodies detected in total IgG preparations and in the serum of healthy individuals. In addition to the insulin-neutralizing anti-insulin IgG, we identified two fractions of anti-insulin IgM in the serum of healthy individuals. These autoreactive IgM fractions differ in their affinity to insulin. Interestingly, the low-affinity IgM fraction (anti-insulin IgMlow) neutralizes insulin and leads to increased blood glucose, whereas the high-affinity IgM fraction (anti-insulin IgMhigh) protects insulin from neutralization by anti-insulin IgG, thereby preventing blood glucose dysregulation. To demonstrate that anti-insulin IgMhigh acts as a protector of insulin and counteracts insulin neutralization by anti-insulin IgG, we expressed the variable regions of a high-affinity anti-insulin antibody as IgG and IgM. Remarkably, the recombinant anti-insulin IgMhigh normalized insulin function and prevented IgG-mediated insulin neutralization. These results suggest that autoreactive antibodies recognizing insulin are key regulators of blood glucose and metabolism, as they control the concentration of insulin in the blood. Moreover, our data suggest that preventing autoimmune damage and maintaining physiological homeostasis requires adaptive tolerance mechanisms generating high-affinity autoreactive IgM antibodies during memory responses.
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31
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Evaluation of Immune Dysregulation in an Austrian Patient Cohort Suffering from Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. Biomolecules 2021; 11:biom11091359. [PMID: 34572574 PMCID: PMC8465819 DOI: 10.3390/biom11091359] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 11/30/2022] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a severe multi-systemic disease characterized by debilitating fatigue that is not relieved by rest. The causes of the disease are still largely unexplained, and no causative treatment is currently available. Changes in the immune response are considered as fundamental in the development of ME/CFS. Thus, we aimed to evaluate the immunological profile of ME/CFS patients in a retrospective data analysis. As part of the routine workup for ME/CFS patients, a differential blood count, leukocyte subtyping, and quantification of immunoglobulins and IgG subclasses, as well as a complement analysis, was performed. Out of 262 ME/CFS patients, 64.9% had a reduction or deficiency in at least one of the listed immune parameters. In contrast, 26.3% showed signs of immune activation or inflammation. A total of 17.6% of the ME/CFS patients had an unclassified antibody deficiency, with IgG3 and IgG4 subclass deficiencies as the most common phenotypes. Reduced MBL (mannose-binding lectin) levels were found in 32% of ME/CFS patients, and MBL deficiency in 7%. In summary, the present results confirmed the relevance of immune dysfunction in ME/CFS patients underlining the involvement of a dysfunctional immune response in the disease. Thus, immune parameters are relevant disease biomarkers, which might lead to targeted therapeutic approaches in the future.
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32
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Kadam K, Peerzada N, Karbhal R, Sawant S, Valadi J, Kulkarni-Kale U. Antibody Class(es) Predictor for Epitopes (AbCPE): A Multi-Label Classification Algorithm. FRONTIERS IN BIOINFORMATICS 2021; 1:709951. [PMID: 36303781 PMCID: PMC9581038 DOI: 10.3389/fbinf.2021.709951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 08/23/2021] [Indexed: 01/14/2023] Open
Abstract
Development of vaccines and therapeutic antibodies to deal with infectious and other diseases are the most perceptible scientific interventions that have had huge impact on public health including that in the current Covid-19 pandemic. From inactivation methodologies to reverse vaccinology, vaccine development strategies of 21st century have undergone several transformations and are moving towards rational design approaches. These developments are driven by data as the combinatorials involved in antigenic diversity of pathogens and immune repertoire of hosts are enormous. The computational prediction of epitopes is central to these developments and numerous B-cell epitope prediction methods developed over the years in the field of immunoinformatics have contributed enormously. Most of these methods predict epitopes that could potentially bind to an antibody regardless of its type and only a few account for antibody class specific epitope prediction. Recent studies have provided evidence of more than one class of antibodies being associated with a particular disease. Therefore, it is desirable to predict and prioritize ‘peptidome’ representing B-cell epitopes that can potentially bind to multiple classes of antibodies, as an open problem in immunoinformatics. To address this, AbCPE, a novel algorithm based on multi-label classification approach has been developed for prediction of antibody class(es) to which an epitope can potentially bind. The epitopes binding to one or more antibody classes (IgG, IgE, IgA and IgM) have been used as a knowledgebase to derive features for prediction. Multi-label algorithms, Binary Relevance and Label Powerset were applied along with Random Forest and AdaBoost. Classifier performance was assessed using evaluation measures like Hamming Loss, Precision, Recall and F1 score. The Binary Relevance model based on dipeptide composition, Random Forest and AdaBoost achieved the best results with Hamming Loss of 0.1121 and 0.1074 on training and test sets respectively. The results obtained by AbCPE are promising. To the best of our knowledge, this is the first multi-label method developed for prediction of antibody class(es) for sequential B-cell epitopes and is expected to bring a paradigm shift in the field of immunoinformatics and immunotherapeutic developments in synthetic biology. The AbCPE web server is available at http://bioinfo.unipune.ac.in/AbCPE/Home.html.
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Affiliation(s)
- Kiran Kadam
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, India
| | - Noor Peerzada
- Centre for Modeling and Simulation, Savitribai Phule Pune University, Pune, India
| | - Rajiv Karbhal
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, India
| | - Sangeeta Sawant
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, India
| | - Jayaraman Valadi
- Department of Computer Science, FLAME University, Pune, India
- *Correspondence: Jayaraman Valadi, ; Urmila Kulkarni-Kale, ,
| | - Urmila Kulkarni-Kale
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, India
- *Correspondence: Jayaraman Valadi, ; Urmila Kulkarni-Kale, ,
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Spiteri VA, Goodall M, Doutch J, Rambo RP, Gor J, Perkins SJ. Solution structures of human myeloma IgG3 antibody reveal extended Fab and Fc regions relative to the other IgG subclasses. J Biol Chem 2021; 297:100995. [PMID: 34302810 PMCID: PMC8371214 DOI: 10.1016/j.jbc.2021.100995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 11/21/2022] Open
Abstract
Human immunoglobulin G subclass 3 (IgG3) possesses a uniquely long hinge region that separates its Fab antigen-binding and Fc receptor-binding regions. Owing to this hinge length, the molecular structure of full-length IgG3 remains elusive, and the role of the two conserved Fc glycosylation sites are unknown. To address these issues, we subjected glycosylated and deglycosylated human myeloma IgG3 to multidisciplinary solution structure studies. Using analytical ultracentrifugation, the elongated structure of IgG3 was determined from the reduced sedimentation coefficients s020,w of 5.82 to 6.29 S for both glycosylated and deglycosylated IgG3. X-ray and neutron scattering showed that the Guinier RG values were 6.95 nm for glycosylated IgG3 and were unchanged after deglycosylation, again indicating an elongated structure. The distance distribution function P(r) showed a maximum length of 25 to 28 nm and three distinct maxima. The molecular structure of IgG3 was determined using atomistic modeling based on molecular dynamics simulations of the IgG3 hinge and Monte Carlo simulations to identify physically realistic arrangements of the Fab and Fc regions. This resulted in libraries containing 135,135 and 73,905 glycosylated and deglycosylated IgG3 structures, respectively. Comparisons with the X-ray and neutron scattering curves gave 100 best-fit models for each form of IgG3 that accounted for the experimental scattering curves. These models revealed the first molecular structures for full-length IgG3. The structures exhibited relatively restricted Fab and Fc conformations joined by an extended semirigid hinge, which explains the potent effector functions of IgG3 relative to the other subclasses IgG1, IgG2, and IgG4.
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Affiliation(s)
- Valentina A Spiteri
- Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Margaret Goodall
- Institute for Biomedical Research, University of Birmingham, Birmingham, United Kingdom
| | - James Doutch
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, United Kingdom
| | - Robert P Rambo
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, Oxfordshire, United Kingdom
| | - Jayesh Gor
- Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Stephen J Perkins
- Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom.
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Barton JC, Barton JC, Bertoli LF, Acton RT. Factors associated with IgG levels in adults with IgG subclass deficiency. BMC Immunol 2021; 22:53. [PMID: 34372773 PMCID: PMC8353875 DOI: 10.1186/s12865-021-00447-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/04/2021] [Indexed: 12/12/2022] Open
Abstract
Background Factors associated with IgG levels in adults with IgG subclass deficiency (IgGSD) are incompletely understood. We studied adults with IgGSD with subnormal IgG1 only, subnormal IgG1/IgG3, or subnormal IgG3 only without other subnormal IgG subclasses, IgA, or IgM. We compiled: age; sex; autoimmune condition(s) (AC); atopy; IgG, IgG subclasses, IgA, IgM; IgGsum (IgG1 + IgG2 + IgG3 + IgG4); and D (percentage difference between IgGsum and IgG). We compared attributes of patients with/without subnormal IgG (< 7.00 g/L; subnormal IgG1 subclass groups only) and analyzed IgGsum and IgG relationships. We performed backward stepwise regressions on IgG using independent variables IgG subclasses, age, and sex and on D using independent variables age and sex. Results There were 39 patients with subnormal IgG1 only (89.7% women), 53 with subnormal IgG1/IgG3 (88.7% women), and 115 with subnormal IgG3 only (91.3% women). Fifteen patients (38.5%) and 32 patients (60.4%) in the respective subnormal IgG1 subclass groups had subnormal IgG. Attributes of patients with/without IgG < 7.00 g/L were similar, except that AC prevalence was lower in patients with subnormal IgG1 only and IgG < 7.00 g/L than ≥ 7.00 g/L (p = 0.0484). Mean/median IgG1 and IgG2 were significantly lower in patients with IgG < 7.00 g/L in both subnormal IgG1 subclass groups (p < 0.0001, all comparisons). Regressions on IgG in three subclass groups revealed positive associations with IgG1 and IgG2 (p < 0.0001 each association). Regressions on D revealed no significant association. IgG1 percentages of IgGsum were lower and IgG2 percentages were higher in patients with subnormal IgG1 subclass levels than subnormal IgG3 only (p < 0.0001 all comparisons). Conclusions We conclude that both IgG1 and IgG2 are major determinants of IgG in patients with subnormal IgG1, combined subnormal IgG1/IgG3, or subnormal IgG3 and that in patients with subnormal IgG1 or combined subnormal IgG1/IgG3, median IgG2 levels are significantly lower in those with IgG < 7.00 g/L than those with IgG ≥ 7.00 g/L. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-021-00447-3.
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Affiliation(s)
- James C Barton
- University of Alabama at Birmingham, Birmingham, AL, USA. .,Southern Iron Disorders Center, Birmingham, AL, USA. .,Department of Medicine, Brookwood Medical Center, Birmingham, AL, USA.
| | | | - Luigi F Bertoli
- Southern Iron Disorders Center, Birmingham, AL, USA.,Department of Medicine, Brookwood Medical Center, Birmingham, AL, USA
| | - Ronald T Acton
- Southern Iron Disorders Center, Birmingham, AL, USA.,Department of Microbiology, University of Alabama At Birmingham, Birmingham, AL, USA
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Proteomics of Multiple Sclerosis: Inherent Issues in Defining the Pathoetiology and Identifying (Early) Biomarkers. Int J Mol Sci 2021; 22:ijms22147377. [PMID: 34298997 PMCID: PMC8306353 DOI: 10.3390/ijms22147377] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/25/2021] [Accepted: 06/29/2021] [Indexed: 02/06/2023] Open
Abstract
Multiple Sclerosis (MS) is a demyelinating disease of the human central nervous system having an unconfirmed pathoetiology. Although animal models are used to mimic the pathology and clinical symptoms, no single model successfully replicates the full complexity of MS from its initial clinical identification through disease progression. Most importantly, a lack of preclinical biomarkers is hampering the earliest possible diagnosis and treatment. Notably, the development of rationally targeted therapeutics enabling pre-emptive treatment to halt the disease is also delayed without such biomarkers. Using literature mining and bioinformatic analyses, this review assessed the available proteomic studies of MS patients and animal models to discern (1) whether the models effectively mimic MS; and (2) whether reasonable biomarker candidates have been identified. The implication and necessity of assessing proteoforms and the critical importance of this to identifying rational biomarkers are discussed. Moreover, the challenges of using different proteomic analytical approaches and biological samples are also addressed.
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36
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Song DJ, Shen J, Chen MH, Liu ZJ, Cao Q, Hu PJ, Gao X, Qian JM, Wu KC, Lai LJ, Ran ZH. Association of Serum Immunoglobulins Levels With Specific Disease Phenotypes of Crohn's Disease: A Multicenter Analysis in China. Front Med (Lausanne) 2021; 8:621337. [PMID: 33996846 PMCID: PMC8115723 DOI: 10.3389/fmed.2021.621337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 03/29/2021] [Indexed: 12/20/2022] Open
Abstract
Background and Aim: Serum immunoglobulins were reported to be associated with clinical characteristics of inflammatory bowel disease. However, whether a difference exists in the serum immunoglobulins levels in patients with Crohn's disease (CD) with different disease location and behavior phenotypes remains unclear. Therefore, this study aimed to explore the associations of serum immunoglobulins levels with specific CD phenotypes. Methods: Patients with CD having recorded serum immunoglobulins levels were recruited through multicenter collaborative efforts. The associations between serum immunoglobulins levels and distinct phenotypes of CD were evaluated using multiple logistic regression models. Results: A total of 608 patients with CD were included in the study. Elevated (above the upper limit of normal) serum immunoglobulin G (IgG), IgA, IgM, and IgG4 were identified in 24.5, 17.4, 2.1, and 8.2% of patients, respectively. Elevated serum IgG4 levels negatively correlated with complicated disease behavior [odds ratio (OR) 0.49, 95% confidence interval (CI) 0.26-0.92]. Elevated serum IgG was linked to isolated ileal disease with an OR of 0.37 (95% CI 0.23-0.61). The ORs of isolated ileal disease progressively reduced across increasing quartiles of IgG (P for trend < 0.001). The adjusted ORs of isolated ileal disease for increasing quartiles of IgM were 1.82 (1.07-3.1), 1.92 (1.14-3.24), 1.17 (0.69-1.98), and 1 (P for trend = 0.008). Besides, serum IgA and IgG levels significantly correlated with several disease activity indices. Conclusions: These results suggested that certain serum immunoglobulins were associated with specific disease phenotypes of CD. Further investigations to account for the associations are warranted.
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Affiliation(s)
- Dong Juan Song
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Inflammatory Bowel Disease Research Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Jun Shen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Inflammatory Bowel Disease Research Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Min Hu Chen
- Department of Gastroenterology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhan Ju Liu
- Department of Gastroenterology, The Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Qian Cao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Pin Jin Hu
- Department of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiang Gao
- Department of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jia Ming Qian
- Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Kai Chun Wu
- Department of Gastroenterology, Xijing Hospital, Air Force Military Medical University, Xi'an, China
| | - Li Jie Lai
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Inflammatory Bowel Disease Research Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Zhi Hua Ran
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Inflammatory Bowel Disease Research Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
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37
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Kessler EL, Oerlemans MIFJ, van den Hoogen P, Yap C, Sluijter JPG, de Jager SCA. Immunomodulation in Heart Failure with Preserved Ejection Fraction: Current State and Future Perspectives. J Cardiovasc Transl Res 2021; 14:63-74. [PMID: 32444946 PMCID: PMC7892675 DOI: 10.1007/s12265-020-10026-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/07/2020] [Indexed: 12/14/2022]
Abstract
The heart failure (HF) epidemic is growing and approximately half of the HF patients have heart failure with preserved ejection fraction (HFpEF). HFpEF is a heterogeneous syndrome, characterized by a preserved left ventricular ejection fraction (LVEF ≥ 50%) with diastolic dysfunction, and is associated with high morbidity and mortality. Underlying comorbidities of HFpEF, i.e., hypertension, type 2 diabetes mellitus, obesity, and renal failure, lead to a systemic pro-inflammatory state, thereby affecting normal cardiac function. Increased inflammatory biomarkers predict incident HFpEF and are higher in patients with HFpEF as compared with heart failure with reduced ejection fraction (HFrEF). Randomized trials in HFpEF patients using traditional HF medication failed to demonstrate a clear benefit on hard endpoints (mortality and/or HF hospitalization). Therefore, therapies targeting underlying comorbidities and systemic inflammation in early HFpEF may provide better opportunities. Here, we provide an overview of the current state and future perspectives of immunomodulatory therapies for HFpEF.
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Affiliation(s)
- Elise L Kessler
- Laboratory of Experimental Cardiology, Cardiology, UMC Utrecht Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
- Netherlands Heart Institute, 3511 EP, Utrecht, Netherlands
- Circulatory Health Laboratory, Utrecht University, University Medical Center Utrecht, Utrecht, Netherlands
| | - Martinus I F J Oerlemans
- Circulatory Health Laboratory, Utrecht University, University Medical Center Utrecht, Utrecht, Netherlands
- Department of Cardiology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Patricia van den Hoogen
- Laboratory of Experimental Cardiology, Cardiology, UMC Utrecht Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
- Circulatory Health Laboratory, Utrecht University, University Medical Center Utrecht, Utrecht, Netherlands
| | - Carmen Yap
- Laboratory of Experimental Cardiology, Cardiology, UMC Utrecht Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
- Circulatory Health Laboratory, Utrecht University, University Medical Center Utrecht, Utrecht, Netherlands
| | - Joost P G Sluijter
- Laboratory of Experimental Cardiology, Cardiology, UMC Utrecht Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
- Circulatory Health Laboratory, Utrecht University, University Medical Center Utrecht, Utrecht, Netherlands
| | - Saskia C A de Jager
- Laboratory of Experimental Cardiology, Cardiology, UMC Utrecht Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands.
- Circulatory Health Laboratory, Utrecht University, University Medical Center Utrecht, Utrecht, Netherlands.
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands.
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38
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Zheng W, Jiang F, Shan J, Wang Y, Jia Y, Guo Q, Lou J, Zhao Y. Levels of serum IgG subclasses in patients with liver disease: A retrospective study. Exp Ther Med 2020; 21:45. [PMID: 33273974 PMCID: PMC7706388 DOI: 10.3892/etm.2020.9476] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 09/15/2020] [Indexed: 12/14/2022] Open
Abstract
Viral and alcoholic liver disease, drug induced liver disease (DILD), primary biliary cirrhosis (PBC) and autoimmune hepatitis (AIH) are among the most common liver diseases observed in clinical practice. These diseases lack unique clinical characteristics at the beginning of pathogenesis, which renders specific diagnosis difficult. Immunoglobulin G (IgG) subclasses are the main isoform of antibodies that can be found in the serum that serve important protective roles in immunity. The present study aimed to investigate the serum IgG subclass distribution in patients with the five common liver diseases aforementioned. The present study retrospectively recorded and analyzed the serum IgG subclass levels of different patients, who were grouped according to their clinical diagnosis. Serum IgG subclass levels were measured using immunonephelometric assays. IgG3 levels were found to be significantly increased whereas IgG4 levels were significantly decreased in patients with PBC. In patients with AIH, IgG1 levels were significantly increased. By contrast, IgG1/IgG level ratios in patients with viral liver disease were significantly increased. No clear pattern in the distribution characteristics of IgG subclasses could be observed in cohorts with alcoholic liver disease and DILD in the present study. Additionally, model for end-stage liver disease scores regarding IgG1 in patients with AIH shared a synergistic relationship. Anti-mitochondrial antibody subtype M2 (AMA-M2) and IgG3 in patients with PBC demonstrated a synergistic relationship. These results suggested that IgG subclasses may be used as biomarkers to further the understanding of liver disease, which could allow for early diagnosis.
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Affiliation(s)
- Wei Zheng
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Feifei Jiang
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Jing Shan
- Department of Hepatology and Immunology, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Ying Wang
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Yongmei Jia
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Qiuyan Guo
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Jinli Lou
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
| | - Yan Zhao
- Clinical Laboratory Center, Beijing YouAn Hospital, Capital Medical University, Beijing 100069, P.R. China
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Wang L, Li W, Zhang S, Peng L, Shen M, Song S, Zhang W, Cao X, Feng R, Zhang W. Rosai-Dorfman disease mimicking IgG4-related diseases: a single-center experience in China. Orphanet J Rare Dis 2020; 15:285. [PMID: 33054782 PMCID: PMC7557074 DOI: 10.1186/s13023-020-01567-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/05/2020] [Indexed: 01/13/2023] Open
Abstract
Background Rosai–Dorfman disease (RDD) and IgG4-related (IgG4-RD) disease are both rare diseases, but in some cases, RDD mimics IgG4-RD clinically and pathologically. RDD mimicking IgG4-RDs (RDD mimic IgG4-RD), referring to disease initially diagnosed as IgG4-RD but finally pathologically confirmed to be RDD, is a clinically rare and confusing disease. To summarize the characteristics of this disease, we prospectively analyzed the clinical features, laboratory parameters, pathological characteristics, treatment and prognosis of patients diagnosed with RDD mimic IgG4-RD. Moreover, by analyzing characteristics of RDD mimic IgG4-RD, RDD and IgG4-RD, we further compared the similarities and differences between RDD and IgG4-RD.
Results 7 patients with RDD mimic IgG4-RD were included in this study and all of them had extranodal organ involvement, especially the central nervous system, which occurred in 5 patients (71.4%). Although serum IgG4 level was elevated in 6 cases (1360–54,100 mg/L), overall, it was still lower than that in IgG4-RD patients. Furthermore, we found a new cut-off value of serum IgG4 concentration for differentiating RDD and IgG4-RD with higher specificity. Pathological findings of RDD also showed features resembling IgG4-RD: IgG4-positive plasma cell enrichments were observed in all RDD mimic IgG4-RD patients, and the proportion of IgG4/IgG in tissues was 10–40% in 4 patients and more than 40% in 2 patients. However, none of the RDD mimic IgG4-RD patients or RDD patients displayed obliterative phlebitis or storiform fibrosis. Most of the RDD mimic IgG4-RD patients were treated with glucocorticoids combined with immunosuppressants, and a good prognosis was obtained following treatment. Conclusions RDD has clinical manifestations that mimic IgG4-RD. However, detailed differences in laboratory parameters and pathological characteristics are present between these two diseases. Our study underlines the necessity to rule out RDD while diagnosing IgG4-RD using pathological findings as the identification criteria and provides advice for both differentiating these two diseases and clinical treatment of RDD mimic IgG4-RD.
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Affiliation(s)
- Li Wang
- Departments of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, The Ministry of Education Key Laboratory, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, China
| | - Wei Li
- Departments of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, The Ministry of Education Key Laboratory, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, China.,Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital; National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; National Clinical Research Center for Respiratory Diseases; WHO Collaborating Centre for Tobacco Cessation and Respiratory Diseases Prevention, Beijing, 100029, China
| | - Shangzhu Zhang
- Departments of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, The Ministry of Education Key Laboratory, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, China
| | - Linyi Peng
- Departments of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, The Ministry of Education Key Laboratory, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, China
| | - Min Shen
- Departments of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, The Ministry of Education Key Laboratory, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, China
| | - Shuoning Song
- Departments of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Wei Zhang
- Departments of Haematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Xinxin Cao
- Departments of Haematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Ruie Feng
- Departments of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Wen Zhang
- Departments of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, The Ministry of Education Key Laboratory, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, China.
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Aljabban J, Syed S, Syed S, Rohr M, Weisleder N, McElhanon KE, Hasan L, Safeer L, Hoffman K, Aljabban N, Mukhtar M, Adapa N, Allarakhia Z, Panahiazar M, Neuhaus I, Kim S, Hadley D, Jarjour W. Investigating genetic drivers of dermatomyositis pathogenesis using meta-analysis. Heliyon 2020; 6:e04866. [PMID: 33015383 PMCID: PMC7522761 DOI: 10.1016/j.heliyon.2020.e04866] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/17/2020] [Accepted: 09/02/2020] [Indexed: 12/17/2022] Open
Abstract
AIMS Dermatomyositis (DM) is a progressive, idiopathic inflammatory myopathy with poorly understood pathogenesis. A hallmark of DM is an increased risk for developing breast, ovarian, and lung cancer. Since autoantibodies against anti-TIF-1-γ, a member of the tripartite motif (TRIM) proteins, has a strong association with malignancy, we examined expression of the TRIM gene family to identify pathways that may be contributing to DM pathogenesis. MATERIALS AND METHODS We employed the Search Tag Analyze Resource for GEO platform to search the NCBI Gene Expression Omnibus to elucidate TRIM family gene expression as well as oncogenic drivers in DM pathology. We conducted meta-analysis of the data from human skin (60 DM vs 34 healthy) and muscle (71 DM vs 22 healthy). KEY FINDINGS We identified genes involved in innate immunity, antigen presentation, metabolism, and other cellular processes as facilitators of DM disease activity and confirmed previous observations regarding the presence of a robust interferon signature. Moreover, analysis of DM muscle samples revealed upregulation of TRIM14, TRIM22, TRIM25, TRIM27, and TRIM38. Likewise, analysis of DM skin samples showed upregulation of TRIM5, TRIM6, TRIM 14, TRIM21, TRIM34, and TRIM38 and downregulation of TRIM73. Additionally, we noted upregulation of oncogenes IGLC1, IFI44, POSTN, MYC, NPM1, and IDO1 and related this change to interferon signaling. While the clinical data associated with genetic data that was analyzed did not contain clinical data regarding malignancy in these cohorts, the observed genetic changes may be associated with homeostatic and signaling changes that relate to the increased risk in malignancy in DM. SIGNIFICANCE Our results implicate previously unknown genes as potential drivers of DM pathology and suggest certain TRIM family members may have disease-specific roles with potential diagnostic and therapeutic implications.
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Affiliation(s)
- Jihad Aljabban
- University of Wisconsin Hospital and Clinics, Madison, WI, USA
| | - Saad Syed
- Stanford University School of Medicine, Palo Alto, CA, USA
| | - Sharjeel Syed
- University of Chicago Medical Center, Chicago, IL, USA
| | - Michael Rohr
- University of Central Florida College of Medicine, Orlando, FL, USA
| | - Noah Weisleder
- The Ohio State University College of Medicine, Columbus, OH, USA
| | | | - Laith Hasan
- Tulane School of Medicine, New Orleans, LA, USA
| | | | - Kalyn Hoffman
- The Ohio State University College of Medicine, Columbus, OH, USA
| | | | - Mohamed Mukhtar
- Michigan State University College of Human Medicine, Lansing, MI, USA
| | | | - Zahir Allarakhia
- The Ohio State University College of Medicine, Columbus, OH, USA
| | | | - Isaac Neuhaus
- University of California San Francisco, San Francisco, CA, USA
| | - Susan Kim
- University of California San Francisco, San Francisco, CA, USA
| | - Dexter Hadley
- University of Central Florida College of Medicine, Orlando, FL, USA
| | - Wael Jarjour
- The Ohio State University College of Medicine, Columbus, OH, USA
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Shi ZR, Han YF, Yin J, Zhang YP, Jiang ZX, Zheng L, Tan GZ, Wang L. The diagnostic benefit of antibodies against ribosomal proteins in systemic lupus erythematosus. Adv Rheumatol 2020; 60:45. [PMID: 32859277 DOI: 10.1186/s42358-020-00148-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/17/2020] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Anti-ribosomal P (anti-Rib-P) antibody is a specific serological marker for systemic lupus erythematosus (SLE) and routinely tested by targeting the common epitope of three ribosomal proteins of P0, P1 and P2. This study aimed to investigate if testing antibodies against individual ribosomal protein, but not the common epitope, is required to achieve the best diagnostic benefit in SLE. METHODS The study included 82 patients with SLE and 22 healthy donors. Serum antibodies were determined by ELISA and immunoblot. RESULTS The prevalence of each antibody determined by ELISA was 35.4% (anti-Rib-P), 45.1% (anti-Rib-P0), 32.9% (anti-Rib-P1) and 40.2% (anti-Rib-P2) at 99% specificity, respectively. Of 53 patients with negative anti-Rib-P antibody, 21 (39.6%) were positive for anti-Rib-P0, 9 (17.0%) for anti-Rib-P1 and 12 (22.6%) for anti-Rib-P2 antibody. The positive rate of anti-Rib-P antibody detected by ELISA was close to the results by immunoblot (33.4%). Patients with any of these antibodies were featured by higher disease activity and prevalence of skin rashes than those with negative antibodies. Moreover, each antibody was particularly related to some clinical and laboratory disorders. The distribution of subclasses of IgG1-4 was varied with each antibody. Anti-Rib-P0 IgG1 and IgG3 were strongly correlated with disease activity and lower serum complement components 3 and 4. CONCLUSIONS Anti-Rib-P antibody is not adequate to predict the existence of antibodies against ribosomal P0, P1 and P2 protein. The examination of antibodies against each ribosomal protein is required to achieve additional diagnostic benefit and to evaluate the association with clinical and serological disorders as well.
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Affiliation(s)
- Zhen-Rui Shi
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China
| | - Yan-Fang Han
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China
| | - Jing Yin
- Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan, China
| | - Yu-Ping Zhang
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China.,Department of Dermatology, Zhongshan People's Hospital, No.2 Sunwen East Road, Zhongshan, 528403, Guangdong, China
| | - Ze-Xin Jiang
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China.,Department of Dermatology, The First People's Hospital of Foshan, Foshan, 528000, China
| | - Lin Zheng
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China
| | - Guo-Zhen Tan
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China.
| | - Liangchun Wang
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yanjiang Rd W, Guangzhou, 510120, China.
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42
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Napodano C, Marino M, Stefanile A, Pocino K, Scatena R, Gulli F, Rapaccini GL, Delli Noci S, Capozio G, Rigante D, Basile U. Immunological Role of IgG Subclasses. Immunol Invest 2020; 50:427-444. [PMID: 32522062 DOI: 10.1080/08820139.2020.1775643] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The loss of tolerance to self-antigens is the unequivocal "red line" of autoimmunity: both development of autoreactive T and B cells and production of polyclonal autoantibodies represent seminal keys to the pathogenesis of protean autoimmune diseases. Most of these autoantibodies are immunoglobulins G (IgG), functionally distinguished in four subclasses named IgG1, IgG2, IgG3, and IgG4, due to structural differences in the hinge and heavy chain constant regions. Different studies analyzed serum levels of IgG subclasses in the course of different disorders, showing that they might have a pathogenic role by regulating interactions among immunoglobulins, Fc-gamma receptors, and complement. To date, the mechanisms promoting different IgG subclasses distribution during the natural history of most autoimmune diseases remain somewhat unclear. Evidence from the medical literature shows that the serum IgG profile is peculiar for many autoimmune diseases, suggesting that different subclasses could be specific for the underlying driving autoantigens. A better knowledge of IgG subsets may probably help to elucidate their pathological task, but also to define their relevance for diagnostic purposes, patients' personalized management, and prognosis assessment.
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Affiliation(s)
- Cecilia Napodano
- Department of Internal Medicine and Gastroenterology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - MariaPaola Marino
- Institute of General Pathology, Dipartimento Di Medicina E Chirurgia Traslazionale, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Annunziata Stefanile
- Area Diagnostica di Laboratorio, Fondazione Policlinico Universitario "A. Gemelli", Rome, Italy
| | - Krizia Pocino
- Department of Internal Medicine and Gastroenterology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Roberto Scatena
- Dipartimento Di Medicina Di Laboratorio, Ospedale Madre Giuseppina Vannini, Rome, Italy
| | - Francesca Gulli
- Dipartimento Di Medicina Di Laboratorio, Ospedale Madre Giuseppina Vannini, Rome, Italy
| | - Gian Lodovico Rapaccini
- Department of Internal Medicine and Gastroenterology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | - Stefano Delli Noci
- Department of Life Sciences and Public Health, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Giovanna Capozio
- Department of Life Sciences and Public Health, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Donato Rigante
- Università Cattolica del Sacro Cuore, Rome, Italy.,Department of Life Sciences and Public Health, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Umberto Basile
- Area Diagnostica di Laboratorio, Fondazione Policlinico Universitario "A. Gemelli", Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
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43
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Vujasinovic M, Maier P, Maetzel H, Valente R, Pozzi-Mucelli R, Moro CF, Haas SL, Said K, Verbeke CS, Maisonneuve P, Löhr JM. Immunoglobulin G subtypes-1 and 2 differentiate immunoglobulin G4-associated sclerosing cholangitis from primary sclerosing cholangitis. United European Gastroenterol J 2020; 8:584-593. [PMID: 32349627 PMCID: PMC7268946 DOI: 10.1177/2050640620916027] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Autoimmune pancreatitis is a special form of chronic pancreatitis with strong lymphocytic infiltration and two histopathological distinct subtypes, a lymphoplasmacytic sclerosing pancreatitis and idiopathic duct centric pancreatitis. Immunoglobulin G4-associated cholangitis may be present at the time of autoimmune pancreatitis type 1 diagnosis or occur later over the course of the disease. Immunoglobulin G4 is considered reliable but not an ideal marker for diagnosis of autoimmune pancreatitis type 1 with reported sensitivity between 71-81%. It is essential to differentiate sclerosing cholangitis with autoimmune pancreatitis from primary sclerosing cholangitis as the treatment and prognosis of the two diseases are totally different. It was the aim of the study to find a marker for immunoglobulin G4-associated cholangitis that would distinguish it from primary sclerosing cholangitis. PATIENTS AND METHODS We performed a retrospective analysis of patients with autoimmune pancreatitis at our outpatient clinic. Patients from the primary sclerosing cholangitis registry were taken as a control group. Blood samples for the measurement of immunoglobulin subclasses were analysed at the time of diagnosis. RESULTS Patients with autoimmune pancreatitis and immunoglobulin G4-associated cholangitis had higher values of immunoglobulin G2 when compared to autoimmune pancreatitis alone or primary sclerosing cholangitis with a high specificity (97%) and high positive predictive value (91%). In patients with normal or low immunoglobulin G2 or immunoglobulin G4, a high level of immunoglobulin G1 indicated primary sclerosing cholangitis. CONCLUSION Immunoglobulin G1 and immunoglobulin G2 can distinguish patients with immunoglobulin G4-associated cholangitis from those with primary sclerosing cholangitis.
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Affiliation(s)
- Miroslav Vujasinovic
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Pia Maier
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Hartwig Maetzel
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Roberto Valente
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | | | - Carlos F Moro
- Department of Pathology, Karolinska University Hospital, Stockholm, Sweden
| | - Stephan L Haas
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Karouk Said
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Caroline S Verbeke
- Department of Pathology, Karolinska University Hospital, Stockholm, Sweden.,Department of Pathology, University of Oslo, Oslo, Norway
| | - Patrick Maisonneuve
- Division of Epidemiology and Biostatistics, European Institute of Oncology IRCCS, Milan, Italy
| | - J-Matthias Löhr
- Department for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden.,Department of Clinical Science, Intervention, and Technology (CLINTEC), Karolinska Institute, Stockholm, Sweden
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44
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Peppas I, George G, Sollie S, Josephs DH, Hammar N, Walldius G, Karagiannis SN, Van Hemelrijck M. Association of Serum Immunoglobulin Levels with Solid Cancer: A Systematic Review and Meta-analysis. Cancer Epidemiol Biomarkers Prev 2020; 29:527-538. [DOI: 10.1158/1055-9965.epi-19-0953] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 10/14/2019] [Accepted: 12/17/2019] [Indexed: 11/16/2022] Open
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45
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Kim SH, Jeong HJ, Kim JM, Jun JB, Son CN. Clinical Significance of Elevated Serum Immunoglobulin G4 Levels in Patients With Rheumatoid Arthritis. JOURNAL OF RHEUMATIC DISEASES 2020. [DOI: 10.4078/jrd.2020.27.2.96] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sang-Hyon Kim
- Division of Rheumatology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Hye-Jin Jeong
- Division of Rheumatology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Ji-Min Kim
- Division of Rheumatology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Chang-Nam Son
- Division of Rheumatology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
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46
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Sentinel biomarkers in HCV positive patients with mixed cryoglobulinemia. J Immunol Methods 2020; 476:112687. [DOI: 10.1016/j.jim.2019.112687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/23/2019] [Accepted: 10/21/2019] [Indexed: 12/20/2022]
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47
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McLean MR, Lu LL, Kent SJ, Chung AW. An Inflammatory Story: Antibodies in Tuberculosis Comorbidities. Front Immunol 2019; 10:2846. [PMID: 31921122 PMCID: PMC6913197 DOI: 10.3389/fimmu.2019.02846] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/19/2019] [Indexed: 12/20/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) resides in a quarter of the world's population and is the causative agent for tuberculosis (TB), the most common infectious reason of death in humans today. Although cellular immunity has been firmly established in the control of Mtb, there is growing evidence that antibodies may also modulate the infection. More specifically, certain antibody features are associated with inflammation and are divergent in different states of human infection and disease. Importantly, TB impacts not just the healthy but also those with chronic conditions. While HIV represents the quintessential comorbid condition for TB, recent epidemiological evidence shows that additional chronic conditions such as diabetes and kidney disease are rising. In fact, the prevalence of diabetes as a comorbid TB condition is now higher than that of HIV. These chronic diseases are themselves independently associated with pro-inflammatory immune states that encompass antibody profiles. This review discusses isotypes, subclasses, post-translational modifications and Fc-mediated functions of antibodies in TB infection and in the comorbid chronic conditions of HIV, diabetes, and kidney diseases. We propose that inflammatory antibody profiles, which are a marker of active TB, may be an important biomarker for detection of TB disease progression within comorbid individuals. We highlight the need for future studies to determine which inflammatory antibody profiles are the consequences of comorbidities and which may potentially contribute to TB reactivation.
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Affiliation(s)
- Milla R McLean
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Lenette L Lu
- Division of Infectious Disease and Geographic Medicine, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Stephen J Kent
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia.,Infectious Diseases Department, Melbourne Sexual Health Centre, Alfred Health, Central Clinical School, Monash University, Brisbane, VIC, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of Melbourne, Melbourne, SA, Australia
| | - Amy W Chung
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
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48
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Tian X, Deng Z, Wang S, Wang Y. Basic Research and Clinical Reports Associated with Low Serum IgG4 Concentrations. Int Arch Allergy Immunol 2019; 181:149-158. [PMID: 31805576 DOI: 10.1159/000503967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/07/2019] [Indexed: 11/19/2022] Open
Abstract
Elevated IgG4 concentrations in serum have received a great deal of attention recently, whereas the significance of decreased IgG4 levels was frequently neglected in spite of its close relation with infectious and noninfectious inflammations. In this review, based on the structural and functional characteristics of IgG4, we bring together case reports and research related to low levels of IgG4 and try to scratch the importance of decreased IgG4 concentrations in serum. As with elevated IgG4 levels, low serum IgG4-related diseases can be involved in multiple systems such as infection in the respiratory system, stroke in the circulatory system, and glomerulonephritis in the urinary system. Both genetic and immune dysregulation can contribute to decreased IgG4 levels. In the light of animal experiments, we believe that the mystery of low IgG4 can be revealed as long as enough attention is acquired.
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Affiliation(s)
- Xinyu Tian
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Zhenling Deng
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Song Wang
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Yue Wang
- Department of Nephrology, Peking University Third Hospital, Beijing, China,
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49
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Aussy A, Fréret M, Gallay L, Bessis D, Vincent T, Jullien D, Drouot L, Jouen F, Joly P, Marie I, Meyer A, Sibilia J, Bader‐Meunier B, Hachulla E, Hamidou M, Huë S, Charuel J, Fabien N, Viailly P, Allenbach Y, Benveniste O, Cordel N, Boyer O. The IgG2 Isotype of Anti–Transcription Intermediary Factor 1γ Autoantibodies Is a Biomarker of Cancer and Mortality in Adult Dermatomyositis. Arthritis Rheumatol 2019; 71:1360-1370. [DOI: 10.1002/art.40895] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 03/14/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Audrey Aussy
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
| | - Manuel Fréret
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
| | | | - Didier Bessis
- St. Eloi Hospital and Montpellier University HospitalINSERM U1051 Montpellier France
| | - Thierry Vincent
- St. Eloi Hospital and Montpellier University Hospital Montpellier France
| | - Denis Jullien
- Lyon University and Édouard Herriot University Hospital Lyon France
| | - Laurent Drouot
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
| | - Fabienne Jouen
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
| | - Pascal Joly
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
| | - Isabelle Marie
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
| | - Alain Meyer
- Strasbourg University Hospital and Centre de Référence des Maladies Autoimmunes Rares Strasbourg France
| | - Jean Sibilia
- Strasbourg University Hospital and Centre de Référence des Maladies Autoimmunes Rares Strasbourg France
| | | | - Eric Hachulla
- European Reference Network on Connective Tissue and Musculoskeletal DiseasesUniversity of LilleHospital Claude Huriez Lille France
| | | | - Sophie Huë
- AP‐HPHenri Mondor Hospital Créteil France
| | | | | | | | - Yves Allenbach
- AP‐HPPitié‐Salpêtrière University HospitalCentre de Référence Maladies Neuro‐Musculaires, DHU i2B, INSERM UMRS 974 Paris France
| | - Olivier Benveniste
- AP‐HPPitié‐Salpêtrière University HospitalCentre de Référence Maladies Neuro‐Musculaires, DHU i2B, INSERM UMRS 974 Paris France
| | - Nadège Cordel
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital, Rouen, France, and French West Indies University and Pointe‐à‐Pitre University Hospital Pointe‐à‐Pitre Guadeloupe France
| | - Olivier Boyer
- Normandy UniversityUniversity of RouenINSERM U1234Rouen University Hospital Rouen France
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50
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A differential sex-specific pattern of IgG2 and IgG4 subclasses of anti-drug antibodies (ADAs) induced by glatiramer acetate in relapsing-remitting multiple sclerosis patients. Mult Scler Relat Disord 2019; 34:92-99. [PMID: 31272071 DOI: 10.1016/j.msard.2019.06.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/10/2019] [Accepted: 06/17/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Glatiramer acetate (GA) is a drug for Multiple Sclerosis (MS) treatment. However, its administration induces anti-drug antibodies (ADA). This research evaluated the sex differences in humoral response against GA in RR-MS patients METHODS: We analyzed 69 RR-MS patients, 43 treated with GA and 26 treated with IFN-β. In all cases, the serum concentration of IgG antibodies was determined by UPLC, whereas the levels of IgG subclasses (1-4) of anti-GA antibodies and the concentration of IL-6 were detected by Multiplex and IL-10, and IFN-γ were detected by ELISA. RESULTS The total concentration of IgG antibodies in patients did not differ between treatments, whereas the IgG levels of ADA were higher in male and female patients treated with GA (P ≤ 0.0001). The subclasses of IgG anti-GA antibodies were as follows: IgG4>>IgG3>IgG1>IgG2. Statistical analysis showed differences in the IgG2 (P ≤ 0.01) and IgG4 (P ≤ 0.0001) subclasses by sex in RR-MS patients. Levels of IgG1 subclass in male patients correlated positively with the circulatory levels of IL-6 (rs = 0.587, P ≤ 0.04) and IFN-γ (rs = 0.721, P ≤ 0.001), while IgG2 subclass levels in female patients correlated with serum levels of IFN-γ (rs = 0.628, P ≤ 0.0006). Statistical analysis did not detect correlations between the levels of IgG (1-4) subclasses of anti-GA antibodies and the evaluated clinical parameters. CONCLUSION This study showed differences in the levels of IgG2 and IgG4 subclasses of ADA between male and female RR-MS patients. Further studies are necessary to take advantage of the clinical potential of this finding.
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