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Hu C, Yang J, Qi Z, Wu H, Wang B, Zou F, Mei H, Liu J, Wang W, Liu Q. Heat shock proteins: Biological functions, pathological roles, and therapeutic opportunities. MedComm (Beijing) 2022; 3:e161. [PMID: 35928554 PMCID: PMC9345296 DOI: 10.1002/mco2.161] [Citation(s) in RCA: 115] [Impact Index Per Article: 57.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 12/12/2022] Open
Abstract
The heat shock proteins (HSPs) are ubiquitous and conserved protein families in both prokaryotic and eukaryotic organisms, and they maintain cellular proteostasis and protect cells from stresses. HSP protein families are classified based on their molecular weights, mainly including large HSPs, HSP90, HSP70, HSP60, HSP40, and small HSPs. They function as molecular chaperons in cells and work as an integrated network, participating in the folding of newly synthesized polypeptides, refolding metastable proteins, protein complex assembly, dissociating protein aggregate dissociation, and the degradation of misfolded proteins. In addition to their chaperone functions, they also play important roles in cell signaling transduction, cell cycle, and apoptosis regulation. Therefore, malfunction of HSPs is related with many diseases, including cancers, neurodegeneration, and other diseases. In this review, we describe the current understandings about the molecular mechanisms of the major HSP families including HSP90/HSP70/HSP60/HSP110 and small HSPs, how the HSPs keep the protein proteostasis and response to stresses, and we also discuss their roles in diseases and the recent exploration of HSP related therapy and diagnosis to modulate diseases. These research advances offer new prospects of HSPs as potential targets for therapeutic intervention.
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Affiliation(s)
- Chen Hu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Jing Yang
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Ziping Qi
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Hong Wu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Beilei Wang
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Fengming Zou
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Husheng Mei
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
| | - Jing Liu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
| | - Wenchao Wang
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
| | - Qingsong Liu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
- Precision Medicine Research Laboratory of Anhui ProvinceHefeiAnhuiP. R. China
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The Pathophysiological Role of Heat Shock Response in Autoimmunity: A Literature Review. Cells 2021; 10:cells10102626. [PMID: 34685607 PMCID: PMC8533860 DOI: 10.3390/cells10102626] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 12/16/2022] Open
Abstract
Within the last two decades, there has been increasing evidence that heat-shock proteins can have a differential influence on the immune system. They can either provoke or ameliorate immune responses. This review focuses on outlining the stimulatory as well as the inhibitory effects of heat-shock proteins 27, 40, 70, 65, 60, and 90 in experimental and clinical autoimmune settings.
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Pusztai A, Hamar A, Horváth Á, Gulyás K, Végh E, Bodnár N, Kerekes G, Czókolyová M, Szamosi S, Bodoki L, Hodosi K, Domján A, Nagy G, Szöllősi I, Lopez LR, Matsuura E, Prohászka Z, Szántó S, Nagy Z, Shoenfeld Y, Szekanecz Z, Szűcs G. Soluble Vascular Biomarkers in Rheumatoid Arthritis and Ankylosing Spondylitis: Effects of 1-year Antitumor Necrosis Factor-α Therapy. J Rheumatol 2020; 48:821-828. [PMID: 33323530 DOI: 10.3899/jrheum.200916] [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] [Accepted: 11/27/2020] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) and ankylosing spondylitis (AS) have been associated with cardiovascular disease. The treatment of arthritis by tumor necrosis factor-α (TNF-α) inhibitors may decrease the serum concentrations of vascular biomarkers. We determined circulating levels of oxidized low-density lipoprotein (oxLDL)/β2 glycoprotein I (β2-GPI) complexes, antibodies to 60 kDa heat shock protein (anti-Hsp60), soluble urokinase plasminogen activator receptor (suPAR), and B-type natriuretic peptide (BNP) fragment in sera of RA and AS patients undergoing anti-TNF treatment. METHODS Fifty-three patients with RA/AS were treated with etanercept or certolizumab pegol for 1 year. Circulating oxLDL/β2-GPI complex (AtherOx), anti-Hsp60 IgG, and BNP8-29 fragment levels were assessed by ELISA. suPAR levels were determined by suPARnostic Quick Triage test. Flow-mediated vasodilation (FMD), carotid intima-media thickness (CIMT), and arterial pulse wave velocity (PWV) were determined by ultrasound. RESULTS One-year anti-TNF treatment significantly decreased oxLDL/β2-GPI levels, as well as suPAR levels in patients with critically high suPAR levels at baseline. In RA, BNP levels were higher in seropositive vs seronegative patients. Serum levels of these vascular biomarkers variably correlated with lipids, anticitrullinated protein antibodies, rheumatoid factor, and C-reactive protein. CIMT positively correlated with BNP, and PWV with suPAR and anti-Hsp60, whereas FMD inversely associated with anti-Hsp60. In repeated measures ANOVA analysis, disease activity supported the effects of anti-TNF treatment on 12-month changes in oxLDL/β2-GPI. CIMT supported the effects of therapy on changes in anti-Hsp60 and suPAR. CONCLUSION These biomarkers may be involved in the pathogenesis of atherosclerosis underlying RA/AS. TNF inhibition variably affects the serum levels of oxLDL/β2-GPI, suPAR, and BNP.
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Affiliation(s)
- Anita Pusztai
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Hamar
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ágnes Horváth
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Gulyás
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Edit Végh
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Nóra Bodnár
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - György Kerekes
- G. Kerekes, MD, PhD, Intensive Care Unit, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Monika Czókolyová
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Szilvia Szamosi
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Levente Bodoki
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Hodosi
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Andrea Domján
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gábor Nagy
- G. Nagy, MD, PhD, I. Szöllősi, Department of Laboratory Medicine, University of Debrecen, Debrecen, Hungary
| | - Ibolya Szöllősi
- G. Nagy, MD, PhD, I. Szöllősi, Department of Laboratory Medicine, University of Debrecen, Debrecen, Hungary
| | - Luis R Lopez
- L.R. Lopez, MD, PhD, Corgenix Inc., Broomfield, Colorado, USA
| | - Eiji Matsuura
- E. Matsuura, MD, PhD, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Zoltán Prohászka
- Z. Prohászka, MD, PhD, Third Department of Internal Medicine, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Sándor Szántó
- S. Szántó, MD, PhD, Division of Rheumatology, Department of Medicine, and Department of Sports Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Nagy
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
| | - Yehuda Shoenfeld
- Y. Shoenfeld, MD, PhD, Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel
| | - Zoltán Szekanecz
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary;
| | - Gabriella Szűcs
- A. Pusztai, A. Hamar, MD, Á. Horváth, MD, K. Gulyás, MD, E. Végh, MD, N. Bodnár, MD, PhD, M. Czókolyová, S. Szamosi, MD, PhD, L. Bodoki, MD, PhD, K. Hodosi, A. Domján, Z. Nagy, MD, PhD, Z. Szekanecz, MD, PhD, G. Szűcs, MD, PhD, Division of Rheumatology, Department of Medicine, University of Debrecen, Debrecen, Hungary
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Liaskos C, Rentouli S, Simopoulou T, Gkoutzourelas A, Norman GL, Brotis A, Alexiou I, Katsiari C, Bogdanos DP, Sakkas LI. Anti-C1q autoantibodies are frequently detected in patients with systemic sclerosis associated with pulmonary fibrosis. Br J Dermatol 2019; 181:138-146. [PMID: 30875084 DOI: 10.1111/bjd.17886] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Anti-C1q autoantibodies (autoAbs) are associated with systemic lupus erythematosus (SLE), but their presence in other rheumatic diseases has not been adequately investigated. OBJECTIVES We aimed to assess anti-C1q autoAbs and circulating immune complexes (CICs) in systemic sclerosis (SSc). METHODS In total 124 patients with SSc were studied; 106 were female and the median age was 59·4 years (range 25-81·4). Overall 75 (60·5%) had limited cutaneous SSc and 49 (39·5%) had diffuse cutaneous SSc. Also included were 25 patients with Sjögren syndrome (SjS), 29 with rheumatoid arthritis (RA), 38 with SLE and 53 healthy controls. Enzyme-linked immunosorbent assays with high- and low-salt buffers were used to measure anti-C1q antibodies and CICs. The former allows only anti-C1q antibody binding to C1q and the latter also allows IgG Fc to bind to C1q. RESULTS Anti-C1q antibodies were present in 20 of 124 (16·1%) patients with SSc: five had high levels (> 80 RU mL-1 ) and 10 (50%) had moderate levels (40-80 RU mL-1 ). Anti-C1q antibodies were also present in one of 25 (4%) patients with SjS, one of 29 (3%) with RA (P < 0·05 for both) and three of 53 (6%) healthy controls (P < 0·01). Anti-C1q antibodies were detected in 13 of 38 (34%) patients with SLEs. Anti-C1q antibodies were more frequent in male than female patients with SSc (P = 0·005); this association remained after multivariate regression analysis. Anti-C1q antibody level was the most important factor in predicting the presence of pulmonary fibrosis, and the second most important in predicting pulmonary arterial hypertension. Fourteen patients with SSc (11·3%) had CICs. CONCLUSIONS Anti-C1q autoAbs were frequently detected in patients with SSc, and their high levels predict the co-occurrence of pulmonary fibrosis or pulmonary arterial hypertension.
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Affiliation(s)
- C Liaskos
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - S Rentouli
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - T Simopoulou
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - A Gkoutzourelas
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - G L Norman
- Inova Diagnostics Inc., San Diego, CA, U.S.A
| | - A Brotis
- Department of Neurosurgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, 40500, Greece
| | - I Alexiou
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - C Katsiari
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - D P Bogdanos
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece
| | - L I Sakkas
- Department of Rheumatology and Clinical Immunology, University of Thessaly, Larissa, 40500, Greece.,Center for Molecular Medicine, Old Dominion University, Norfolk, VA, U.S.A
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van Dam LS, Rabelink TJ, van Kooten C, Teng YKO. Clinical Implications of Excessive Neutrophil Extracellular Trap Formation in Renal Autoimmune Diseases. Kidney Int Rep 2018; 4:196-211. [PMID: 30775617 PMCID: PMC6365354 DOI: 10.1016/j.ekir.2018.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/02/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022] Open
Abstract
Neutrophil extracellular traps (NETs) are extracellular DNA structures covered with antimicrobial peptides, danger molecules, and autoantigens that can be released by neutrophils. NETs are an important first-line defense mechanism against bacterial, viral, fungal, and parasitic infections, but they can also play a role in autoimmune diseases. NETs are immunogenic and toxic structures that are recognized by the autoantibodies of patients with antineutrophil cytoplasmic antibodies−associated vasculitis (AAV) (i.e., against myeloperoxidase or proteinase-3) and systemic lupus erythematosus (SLE) (i.e., against double-stranded DNA, histones, or nucleosomes). There is cumulating preclinical and clinical evidence that both excessive formation and impaired degradation of NETs are involved in the pathophysiology of AAV and SLE. These autoimmune diseases give rise to 2 clinically and pathologically distinct forms of glomerulonephritis (GN), respectively, crescentic pauci-immune GN and immune complex−mediated GN. Therefore, it is relevant to understand the different roles NET formation can play in the pathophysiology of these most prevalent renal autoimmune diseases. This review summarizes the current concepts on the role of NET formation in the pathophysiology of AAV and SLE, and provides a translational perspective on the clinical implications of NETs, such as potential therapeutic approaches that target NET formation in these renal autoimmune diseases.
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Affiliation(s)
- Laura S van Dam
- Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Ton J Rabelink
- Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Cees van Kooten
- Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Y K Onno Teng
- Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
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Efthymiou G, Dardiotis E, Liaskos C, Marou E, Tsimourtou V, Scheper T, Meyer W, Daponte A, Sakkas LI, Hadjigeorgiou G, Bogdanos DP. Anti-hsp60 antibody responses based on Helicobacter pylori in patients with multiple sclerosis: (ir)Relevance to disease pathogenesis. J Neuroimmunol 2016; 298:19-23. [PMID: 27609271 DOI: 10.1016/j.jneuroim.2016.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 06/10/2016] [Accepted: 06/22/2016] [Indexed: 12/30/2022]
Abstract
In view of published data suggesting that Helicobacter pylori (Hp) is a trigger of multiple sclerosis (MS), we assessed anti-heat shock protein 60 (hsp60)Hp antibody reactivity in 129 MS patients and 48 demograpically-matched healthy controls (HCs). Anti-Hp antibodies by ELISA were more elevated in MS than HCs but did not differ between different MS phenotypes. All anti-Hp-positive MS sera, irrespectively of their clinical phenotype, were anti-anti-hsp60 positive. Anti-hsp60 Hp seropositivity correlated with age at disease onset. In conclusion, anti-hsp60 Hp antibodies are present in all anti-Hp positive MS patients, and their relevance to disease pathogenesis is questionable.
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Affiliation(s)
- Georgios Efthymiou
- Cellular Immunotherapy & Molecular Immunodiagnostics, Biomedical Section, Centre for Research and Technology-Hellas (CERTH), Institute for Research and Technology-Thessaly (IRETETH), 41222 Larissa, Greece; Department of Neurology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 40500 Larissa, Greece; Department of Rheumatology, University General Hospital, Faculty of Medicine, School of Health Sciences, University of Thessaly, Viopolis, 41110 Larissa, Greece
| | - Efthymios Dardiotis
- Department of Neurology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 40500 Larissa, Greece
| | - Christos Liaskos
- Cellular Immunotherapy & Molecular Immunodiagnostics, Biomedical Section, Centre for Research and Technology-Hellas (CERTH), Institute for Research and Technology-Thessaly (IRETETH), 41222 Larissa, Greece; Department of Rheumatology, University General Hospital, Faculty of Medicine, School of Health Sciences, University of Thessaly, Viopolis, 41110 Larissa, Greece
| | - Emmanouela Marou
- Cellular Immunotherapy & Molecular Immunodiagnostics, Biomedical Section, Centre for Research and Technology-Hellas (CERTH), Institute for Research and Technology-Thessaly (IRETETH), 41222 Larissa, Greece; Department of Rheumatology, University General Hospital, Faculty of Medicine, School of Health Sciences, University of Thessaly, Viopolis, 41110 Larissa, Greece
| | - Vana Tsimourtou
- Department of Neurology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 40500 Larissa, Greece
| | - Thomas Scheper
- Institute of Immunology, EUROIMMUN, 23560 Lubeck, Germany
| | - Wolfgang Meyer
- Institute of Immunology, EUROIMMUN, 23560 Lubeck, Germany
| | - Alexandros Daponte
- Department of Obstetrics and Gyneocology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 40500 Larissa, Greece
| | - Lazaros I Sakkas
- Department of Rheumatology, University General Hospital, Faculty of Medicine, School of Health Sciences, University of Thessaly, Viopolis, 41110 Larissa, Greece
| | - Georgios Hadjigeorgiou
- Department of Neurology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 40500 Larissa, Greece
| | - Dimitrios P Bogdanos
- Cellular Immunotherapy & Molecular Immunodiagnostics, Biomedical Section, Centre for Research and Technology-Hellas (CERTH), Institute for Research and Technology-Thessaly (IRETETH), 41222 Larissa, Greece; Department of Rheumatology, University General Hospital, Faculty of Medicine, School of Health Sciences, University of Thessaly, Viopolis, 41110 Larissa, Greece.
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Beurskens FJ, van Schaarenburg RA, Trouw LA. C1q, antibodies and anti-C1q autoantibodies. Mol Immunol 2015; 68:6-13. [PMID: 26032012 DOI: 10.1016/j.molimm.2015.05.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 05/04/2015] [Accepted: 05/07/2015] [Indexed: 12/21/2022]
Abstract
The complement system has long been known for its role in combating infections. More recently the complement system is becoming increasingly appreciated for its role in processes that range from waste transport, immune tolerance and shaping of the adaptive immune response. Antibodies represent the humoral part of the adaptive immune response and the complement system interacts with antibodies in several ways. Activated complement fragments impact on the production of antibodies, the complement system gets activated by antibodies and complement proteins can be the target of (auto)antibodies. In this review, written to celebrate the contributions of Prof. Dr. M.R. Daha to the field of immunology and especially complement, we will focus on C1q and its various interactions with antibodies. We will specifically focus on the mechanisms by which C1q will interact with monomeric IgG versus polymerized IgG and fluid-phase IgM versus solid-phase IgM. In addition in this review we will discuss in detail how C1q itself is targeted by autoantibodies and how these autoantibodies are currently considered to play a role in human disease.
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Affiliation(s)
| | | | - Leendert A Trouw
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
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Bassyouni IH, Gamal S, Talaat RM, Siam I. Autoantibodies against complement C1q in patients with Behcet's disease: association with vascular involvement. Mod Rheumatol 2014; 24:316-20. [PMID: 24593207 DOI: 10.3109/14397595.2013.854071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AIM The aim of our study was to determine the prevalence of anti-C1q antibodies and their possible association with clinical presentation in Behcet's disease (BD) patients with special emphasis for patients with vascular involvement. METHODS Plasma anti-C1q Abs levels were measured using an enzyme-linked immunosorbent assay in 51 BD patients and 25 age- and gender-matched healthy controls. RESULTS We found elevated concentrations of anti-C1q more frequently in patients with BD (18 %) than in healthy controls (8 %). The highest prevalence was found in patients with vascular BD (42 %) which was significantly higher than patients without vascular BD and healthy controls (p = 0.025). Furthermore, patients with vascular BD had the highest mean anti-C1q levels when compared to BD patients without vascular involvement or healthy control subjects (p = 0.015). We did not find significant differences in the prevalence of any other organ involvement between BD patients with elevated vs. normal anti-C1q ab levels. Anti-C1q ab levels positively correlated with ESR (r = 0.383, p = 0.006) and negatively with C4 (r = -0.304, p = 0.030). CONCLUSION In conclusion, we found an increased prevalence of anti-C1q autoantibodies in BD patients with vascular involvement. Further large scale longitudinal studies are required to assess and clarify the significance and the pathogenic role of anti-C1q antibodies in BD and other autoimmune diseases in which vasculitis is a component.
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Affiliation(s)
- Iman H Bassyouni
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Cairo University, El-Kasr El-Aini Hospital , Cairo , Egypt
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Orbai AM, Truedsson L, Sturfelt G, Nived O, Fang H, Alarcón GS, Gordon C, Merrill J, Fortin PR, Bruce IN, Isenberg DA, Wallace DJ, Ramsey-Goldman R, Bae SC, Hanly JG, Sanchez-Guerrero J, Clarke AE, Aranow CB, Manzi S, Urowitz MB, Gladman DD, Kalunian KC, Costner MI, Werth VP, Zoma A, Bernatsky S, Ruiz-Irastorza G, Khamashta MA, Jacobsen S, Buyon JP, Maddison P, Dooley MA, Van Vollenhoven RF, Ginzler E, Stoll T, Peschken C, Jorizzo JL, Callen JP, Lim SS, Fessler BJ, Inanc M, Kamen DL, Rahman A, Steinsson K, Franks AG, Sigler L, Hameed S, Pham N, Brey R, Weisman MH, McGwin G, Magder LS, Petri M. Anti-C1q antibodies in systemic lupus erythematosus. Lupus 2014; 24:42-9. [PMID: 25124676 DOI: 10.1177/0961203314547791] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Anti-C1q has been associated with systemic lupus erythematosus (SLE) and lupus nephritis in previous studies. We studied anti-C1q specificity for SLE (vs rheumatic disease controls) and the association with SLE manifestations in an international multicenter study. METHODS Information and blood samples were obtained in a cross-sectional study from patients with SLE (n = 308) and other rheumatologic diseases (n = 389) from 25 clinical sites (84% female, 68% Caucasian, 17% African descent, 8% Asian, 7% other). IgG anti-C1q against the collagen-like region was measured by ELISA. RESULTS Prevalence of anti-C1q was 28% (86/308) in patients with SLE and 13% (49/389) in controls (OR = 2.7, 95% CI: 1.8-4, p < 0.001). Anti-C1q was associated with proteinuria (OR = 3.0, 95% CI: 1.7-5.1, p < 0.001), red cell casts (OR = 2.6, 95% CI: 1.2-5.4, p = 0.015), anti-dsDNA (OR = 3.4, 95% CI: 1.9-6.1, p < 0.001) and anti-Smith (OR = 2.8, 95% CI: 1.5-5.0, p = 0.01). Anti-C1q was independently associated with renal involvement after adjustment for demographics, ANA, anti-dsDNA and low complement (OR = 2.3, 95% CI: 1.3-4.2, p < 0.01). Simultaneously positive anti-C1q, anti-dsDNA and low complement was strongly associated with renal involvement (OR = 14.9, 95% CI: 5.8-38.4, p < 0.01). CONCLUSIONS Anti-C1q was more common in patients with SLE and those of Asian race/ethnicity. We confirmed a significant association of anti-C1q with renal involvement, independent of demographics and other serologies. Anti-C1q in combination with anti-dsDNA and low complement was the strongest serological association with renal involvement. These data support the usefulness of anti-C1q in SLE, especially in lupus nephritis.
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Affiliation(s)
- A-M Orbai
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - L Truedsson
- Department of Laboratory Medicine, Section of Microbiology, Immunology and Glycobiology, Lund University, Lund, Sweden
| | - G Sturfelt
- Department of Rheumatology, Skåne University Hospital, Lund, Sweden
| | - O Nived
- Department of Rheumatology, Skåne University Hospital, Lund, Sweden
| | - H Fang
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - G S Alarcón
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - C Gordon
- Rheumatology Research Group, School of Immunity and Infection, College of Medical and Dental Sciences University of Birmingham, Birmingham, UK
| | - Jt Merrill
- Department of Clinical Pharmacology, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - P R Fortin
- Division of Rheumatology, Department of Medicine, Centre Hospitalier Universitaire (CHU) de Québec Axe Maladies Infectieuses et Immunitaires, CRCHU de Québec, Université Laval, Quebec City, Quebec, Canada
| | - I N Bruce
- Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Institute of Inflammation and Repair, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, UK NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, UK
| | - D A Isenberg
- Centre for Rheumatology, Research Division of Medicine, London, UK
| | - D J Wallace
- Cedars-Sinai Medical Center, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - R Ramsey-Goldman
- Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - S-C Bae
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - J G Hanly
- Division of Rheumatology, Departments of Medicine and Pathology Capital Health and Dalhousie University, Halifax, Nova Scotia, Canada
| | - J Sanchez-Guerrero
- Mount Sinai Hospital and University Health Network, Toronto, Ontario, Canada
| | - A E Clarke
- Divisions of Clinical Epidemiology and Rheumatology, McGill University Health Centre, Montreal, Quebec, Canada
| | - C B Aranow
- Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - S Manzi
- Department of Medicine, Division of Rheumatology, Allegheny Singer Research Institute, Allegheny General Hospital, Pittsburgh, PA, USA
| | - M B Urowitz
- Toronto Western Hospital Toronto, Ontario, Canada
| | - D D Gladman
- Toronto Western Hospital Toronto, Ontario, Canada
| | - K C Kalunian
- Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, USA
| | - M I Costner
- North Dallas Dermatology Associates, Dallas, TX, USA
| | - V P Werth
- Philadelphia VA Medical Center and University of Pennsylvania, Philadelphia, PA, USA
| | - A Zoma
- Lanarkshire Centre for Rheumatology and Hairmyres Hospital, East Kilbride, UK
| | - S Bernatsky
- Divisions of Clinical Epidemiology and Rheumatology, McGill University Health Centre, Montreal, Quebec, Canada
| | - G Ruiz-Irastorza
- Autoimmune Diseases Research Unit, Hospital Universitario Cruces Universidad del Pais Vasco, Barakaldo, Spain
| | | | - S Jacobsen
- Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - J P Buyon
- New York University, New York, NY, USA
| | | | - M A Dooley
- University of North Carolina, Chapel Hill, NC, USA
| | | | - E Ginzler
- State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - T Stoll
- Kantonsspital Schaffhausen, Schaffhausen, Switzerland
| | - C Peschken
- University of Manitoba Winnipeg, Manitoba, Canada
| | - J L Jorizzo
- Wake Forest University, Winston-Salem, NC, USA
| | - J P Callen
- University of Louisville, Louisville, KY, USA
| | - S S Lim
- Emory University, Atlanta, GA, USA
| | - B J Fessler
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - M Inanc
- Division of Rheumatology, Department of Internal Medicine, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - D L Kamen
- Medical University of South Carolina, Charleston, SC, USA
| | - A Rahman
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, UK
| | - K Steinsson
- Landspitali University Hospital, Reykjavik, Iceland
| | | | - L Sigler
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Hameed
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - N Pham
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - R Brey
- University of Texas Health Science Center, San Antonio, TX, USA
| | - M H Weisman
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - G McGwin
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - L S Magder
- Department of Epidemiology and Public Health, University of Maryland, Baltimore, MD, USA
| | - M Petri
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Mahler M, van Schaarenburg RA, Trouw LA. Anti-C1q autoantibodies, novel tests, and clinical consequences. Front Immunol 2013; 4:117. [PMID: 23717311 PMCID: PMC3653116 DOI: 10.3389/fimmu.2013.00117] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 04/30/2013] [Indexed: 02/02/2023] Open
Abstract
Although anti-C1q autoantibodies have been described more than four decades ago a constant stream of papers describing clinical associations or functional consequences highlights that anti-C1q antibodies are still hot and happening. By far the largest set of studies focus on anti-C1q antibodies is systemic lupus erythematosus (SLE). In SLE anti-C1q antibodies associate with involvement of lupus nephritis in such a way that in the absence of anti-C1q antibodies it is unlikely that a flare in nephritis will occur. Anti-C1q antibodies occur in several autoimmune conditions but also in healthy individuals. Although considerable progress has been made in the understanding of how anti-C1q antibodies may contribute to tissue injury there is still a lot to learn about the processes involved in the breaking of tolerance to this protein. There has been considerable improvement in the assays employed to test for the presence of anti-C1q antibodies. Hopefully with these new and standardized assays at hand larger clinical association studies will be conducted with independent replication. Such large-scale studies will reveal the true value of clinical testing for anti-C1q autoantibodies in several clinical conditions.
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Bassyouni IH, Gamal S, Talaat RM, Siam I. Autoantibodies against complement C1q in patients with Behcet's disease: association with vascular involvement. Mod Rheumatol 2013. [PMID: 23564409 DOI: 10.1007/s10165-013-0880-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 03/27/2013] [Indexed: 10/27/2022]
Abstract
AIM: The aim of our study was to determine the prevalence of anti-C1q antibodies and their possible association with clinical presentation in Behcet's disease (BD) patients with special emphasis for patients with vascular involvement. METHODS: Plasma anti-C1q Abs levels were measured using an enzyme-linked immunosorbent assay in 51 BD patients and 25 age- and gender-matched healthy controls. RESULTS: We found elevated concentrations of anti-C1q more frequently in patients with BD (18 %) than in healthy controls (8 %). The highest prevalence was found in patients with vascular BD (42 %) which was significantly higher than patients without vascular BD and healthy controls (p = 0.025). Furthermore, patients with vascular BD had the highest mean anti-C1q levels when compared to BD patients without vascular involvement or healthy control subjects (p = 0.015). We did not find significant differences in the prevalence of any other organ involvement between BD patients with elevated vs. normal anti-C1q ab levels. Anti-C1q ab levels positively correlated with ESR (r = 0.383, p = 0.006) and negatively with C4 (r = -0.304, p = 0.030). CONCLUSION: In conclusion, we found an increased prevalence of anti-C1q autoantibodies in BD patients with vascular involvement. Further large scale longitudinal studies are required to assess and clarify the significance and the pathogenic role of anti-C1q antibodies in BD and other autoimmune diseases in which vasculitis is a component.
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Affiliation(s)
- Iman H Bassyouni
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Cairo University, El-Kasr El-Aini Hospital, Cairo, Egypt,
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12
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Soltész P, Kerekes G, Dér H, Szücs G, Szántó S, Kiss E, Bodolay E, Zeher M, Timár O, Szodoray P, Szegedi G, Szekanecz Z. Comparative assessment of vascular function in autoimmune rheumatic diseases: considerations of prevention and treatment. Autoimmun Rev 2011; 10:416-25. [PMID: 21281743 DOI: 10.1016/j.autrev.2011.01.004] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2011] [Accepted: 01/08/2011] [Indexed: 12/31/2022]
Abstract
Numerous autoimmune-inflammatory rheumatic diseases have been associated with accelerated atherosclerosis or other types of vasculopathy leading to increased cardio- and cerebrovascular disease risk. Traditional risk factors, as well as the role of systemic inflammation including cytokines, chemokines, proteases, autoantibodies, adhesion receptors and others have been implicated in the development of these vascular pathologies. The characteristics of vasculopathies may significantly differ depending on the underlying disease. While classical accelerated atherosclerosis has been associated with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) or spondyloarthropathies (SpA), obliterative vasculopathy may rather be characteristic for systemic sclerosis (SSc) or mixed connective tissue disease (MCTD). Antiphospholipid antibodies have been implicated in vasculopathies underlying SLE, antiphospholipid syndrome (APS), RA and MCTD. There is also heterogeneity with respect to inflammatory risk factors. Cytokines, such as tumor necrosis factor-α (TNF-α) or interleukin 6 (IL-6) and immune complexes are primarily involved in arthritides, such as RA, SpA, as well as in SLE. On the other hand, autoantibodies including anti-oxLDL anti-cardiolipin and anti-β2GPI are rather involved in SLE- and APS-associated vasculopathies. Regarding the non-invasive assessment of vascular function, endothelial dysfunction, overt atherosclerosis and vascular stiffness may be indicated by brachial artery flow-mediated vasodilation (FMD), common carotid intima-media thickness (ccIMT) and aortic pulse-wave velocity (PWV), respectively. These abnormalities have been described in most inflammatory rheumatic diseases. While ccIMT and stiffness are relatively stable, FMD may be influenced by many confounding factors. In addition to traditional vasculoprotection, immunosuppressive agents including corticosteroids, traditional and biologic DMARDs may have significant vascular and metabolic effects. The official EULAR recommendations on the assessment and management of cardiovascular disease in arthritides have just been published, and similar recommendations in connective tissue diseases are to be developed soon.
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Affiliation(s)
- Pál Soltész
- University of Debrecen Medical and Health Sciences Center, Institute of Medicine, Third Department of Medicine, Angiology and Intensive Care Unit, Debrecen, Hungary
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13
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Abstract
Systemic sclerosis (SSc) is a chronic disease of unknown etiology, characterized by enhanced fibrosis, and microvascular abnormalities. During the past several decades, the death rates due to cardiovascular disease or cerebrovascular disease in SSc patients substantially increased and are currently responsible for 20-30% of mortality. Various autoimmune rheumatic diseases such as rheumatoid arthritis and systemic lupus erythematosus accelerate atherosclerosis. Although microvascular disease is a hallmark of SSc, an ongoing debate exists regarding the presence and extent of macrovascular diseases and the presence of accelerated atherosclerosis in SSc patients. Despite conflicting results as to intima-media thickness (IMT) in SSc patients, the most recent and largest study has found no difference in either plaque occurrence or IMT. Additionally, abnormal coronary flow reserve in SSc patients appears to be due to microvascular involvement rather than atherosclerosis of the epicardial coronary arteries. Angiographic findings as well as computed tomography studies have generated conflicting reports as to coronary atherosclerosis in SSc. Herein, we review the current knowledge of macrovascular involvement and atherosclerosis in SSc. The differences between SSc and other autoimmune rheumatic diseases in the presence and extent of atherosclerosis need to be further investigated.
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14
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Meyer OC, Nicaise-Roland P, Cadoudal N, Grootenboer-Mignot S, Palazzo E, Hayem G, Dieudé P, Chollet-Martin S. Anti-C1q antibodies antedate patent active glomerulonephritis in patients with systemic lupus erythematosus. Arthritis Res Ther 2009; 11:R87. [PMID: 19515233 PMCID: PMC2714141 DOI: 10.1186/ar2725] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Revised: 06/05/2009] [Accepted: 06/10/2009] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Autoantibodies against C1q correlate with lupus nephritis. We compared titers of anti-C1q and anti-dsDNA in 70 systemic lupus erythematosus patients with (n = 15) or without (n = 55) subsequent biopsy-proven lupus nephritis. METHODS The 15 patients with subsequent lupus nephritis had anti-C1q assays during clinical flares (mean Systemic Lupus Erythematosus Disease Activity Index (SLEDAI), 10.0 +/- 4.7; range, 3 to 22) before the diagnosis of lupus nephritis (median, 24 months; range 3 to 192). Among the 55 others, 33 patients had active lupus (mean SLEDAI, 10.3 +/- 6.2; range, 4 to 30) without renal disease during follow-up (median 13 years; range 2 to 17 years) and 22 had inactive lupus (mean SLEDAI, 0; range, 0 to 3). RESULTS Anti-C1q titers were elevated in 15/15 (100%) patients who subsequently developed nephritis (class IV, n = 14; class V, n = 1) and in 15/33 (45%) patients without renal disease (P < 0.001). The median anti-C1q titer differed significantly between the groups (P = 0.003). Anti-C1q titers were persistently positive at the time of glomerulonephritis diagnosis in 70% (7/10) of patients, with no difference in titers compared with pre-nephritis values (median, 147 U/ml; interquartile range (IQR), 69 to 213 versus 116 U/ml; 50 to 284, respectively). Titers decreased after 6 months' treatment with immunosuppressive drugs and corticosteroids (median, 76 U/ml; IQR, 33 to 106) but remained above normal in 6/8 (75%) patients. Anti-dsDNA antibodies were increased in 14/15 (93.3%) patients with subsequent nephritis and 24/33 (72.7%) patients without nephritis (P = ns). Anti-C1q did not correlate with anti-dsDNA or the SLEDAI in either group. CONCLUSIONS Anti-C1q elevation had 50% positive predictive value (15/30) and 100% (18/18) negative predictive value for subsequent class IV or V lupus nephritis.
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Affiliation(s)
- Olivier C Meyer
- Rheumatology Unit, Bichat Hospital, APHP, 75018 Paris, France.
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15
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Pozsonyi E, György B, Berki T, Bánlaki Z, Buzás E, Rajczy K, Hossó A, Prohászka Z, Szilágyi A, Cervenak L, Füst G. HLA-association of serum levels of natural antibodies. Mol Immunol 2009; 46:1416-23. [PMID: 19167759 DOI: 10.1016/j.molimm.2008.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Revised: 12/08/2008] [Accepted: 12/16/2008] [Indexed: 01/01/2023]
Abstract
Natural antibodies of IgM or IgG types are present in sera of most healthy individuals and are important participants of the immune response. Little is known, however, about the genetic regulation of their plasma levels in humans. We determined the concentrations of three IgM type natural autoantibodies (NAAbs) reactive to certain conserved self-antigens (citrate synthase (A-CIT), chondroitin sulphate C (A-COS) and 60 kDa heat shock proteins (A-HSP) in the sera of 78 healthy individuals and in their 86 children. In case of all the 164 individuals alleles of several polymorphisms were determined in class II (HLA-DQ, -DR), class III (AGER-429T>C, HSP70-2 1267A>G, TNF-308G>A, CFB S/F, copy number of the C4A and C4B genes), and class I (HLA-A, -B) regions of the major histocompatibility complex (MHC). Since the samples originated from a family study, extended MHC haplotypes were also determined for each study participant. Our results show that children of parents with low NAAb concentration have significantly lower serum concentrations of all the three NAAbs, as compared to offsprings of parents without reduced serum concentration. This indicates that the serum levels of these NAAbs were partly regulated by factors which are inherited from the parents to offsprings. In further studies performed only in genetically independent parents, we found significant differences in the serum levels of the IgM type A-CIT and A-COS antibodies (Abs) between carriers and non-carriers of the HLA-DR2 (15 and 16) antigens. In both cases the Ab concentrations were higher in the HLA-DR15 carriers (p=0.002 and p=0.008, respectively) and lower in DR16 carriers (p=0.029 and p=0.049, respectively) than in the non-carriers. Even more significant differences were found when the levels of two Abs were evaluated together. Frequency of the DR15 carriers was significantly lower among subjects with one or two low (in the lowest quartile) titers of A-CIT/A-COS Abs (p=0.014), A-CIT/A-HSP Abs (p=0.016) and A-COS/A-HSP Abs (p=0.013) as compared to those with normal Ab titers for both antigens. By contrast, frequency of the DR16 carriers was significantly higher among subjects with one or two low A-CIT/A-COS Abs (p=0.001), A-CIT/A-HSP Abs (p=0.002) and A-COS/A-HSP Abs (p=0.021) as compared to those with normal Ab titers for both antigens. Similar differences were found for both IgM type antibodies when carriers and non-carriers of the HLA-DR15-DQ6 and HLA-DR16-DQ5 haplotypes were considered. These novel observations indicate that not only adaptive immune response but also natural autoantibody pattern, as a part of innate immune response, is influenced by the MHC allele composition.
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Affiliation(s)
- Eva Pozsonyi
- National Blood Transfusion Service, Budapest, Hungary
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16
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Balsam L, Karim M, Miller F, Rubinstein S. Crescentic Glomerulonephritis Associated With Hypocomplementemic Urticarial Vasculitis Syndrome. Am J Kidney Dis 2008; 52:1168-73. [DOI: 10.1053/j.ajkd.2008.07.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2008] [Accepted: 07/08/2008] [Indexed: 11/11/2022]
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Potlukova E, Kralikova P. Complement component c1q and anti-c1q antibodies in theory and in clinical practice. Scand J Immunol 2008; 67:423-30. [PMID: 18363591 DOI: 10.1111/j.1365-3083.2008.02089.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The complement system is a major part of the innate immunity. The first component of the classical pathway of complement activation, C1q, plays a crucial role in the clearance of immune complexes and apoptotic bodies from the organism. Autoantibodies against C1q (anti-C1q) have been found in a number of autoimmune and infectious diseases. They have been best described in patients with systemic lupus erythematosus, where they are thought to play a pathogenic role in lupus nephritis (LN). Their high negative predictive value for the occurrence of active proliferative LN, as well as their possible ability to indicate a renal flare as soon as 6 months in advance, have rendered anti-C1q antibodies a novel non-invasive tool in the detection of active LN.
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Affiliation(s)
- E Potlukova
- Third Clinic of Medicine, General Teaching Hospital, First Faculty of Medicine, Charles University, Prague, Czech Republic.
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Alard JE, Dueymes M, Youinou P, Jamin C. Modulation of endothelial cell damages by anti-Hsp60 autoantibodies in systemic autoimmune diseases. Autoimmun Rev 2007; 6:438-43. [PMID: 17643930 DOI: 10.1016/j.autrev.2007.01.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2006] [Accepted: 01/22/2007] [Indexed: 10/23/2022]
Abstract
Heat-shock protein (Hsp) family is made up of heterogeneous proteins of which Hsp60 members are the most studied. It is now generally admitted that Hsp60 is not only a mitochondrial component but can be localized on the membrane cell surface. Considered as a signal danger following infections, Hsp60 can induce the production of anti-Hsp60 antibodies as defense mechanisms against pathogens. However, endogenous Hsp60 is also a target of autoantibodies in autoimmune disorders, atherosclerosis and vascular diseases, in which anti-endothelial cell antibodies (AECA) are generated. Hsp60 is one of the endothelial cell autoantigens able to trigger cytotoxic and apoptotic responses when recognized by the related autoantibodies. Depending on the Hsp60 epitope specificity, it appears that AECA with Hsp60 reactivity may differ in their functional effects. These observations suggest that new therapeutic approach to avoid endothelial cell damages due to anti-Hsp60 autoantibodies would be successful provided that specific Hsp60 epitopes would have been precisely characterized.
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Affiliation(s)
- Jean-Eric Alard
- Laboratory of Immunology, Brest University Medical School, BP 824, F 29609, Brest, France
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Wu T, Tanguay RM. Antibodies against heat shock proteins in environmental stresses and diseases: friend or foe? Cell Stress Chaperones 2006; 11:1-12. [PMID: 16572724 PMCID: PMC1400608 DOI: 10.1379/csc-155r.1] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2005] [Revised: 11/14/2005] [Accepted: 11/16/2005] [Indexed: 01/06/2023] Open
Abstract
Heat shock proteins (Hsps) can be found in two forms, intracellular and extracellular. The intracellular Hsps are induced as a result of stress and have been found to be cytoprotective in many instances due to their chaperone functions in protein folding and in protein degradation. The origin and role of extracellular Hsps is less clear. Although they were suspected originally to be released from damaged cells (necrosis), their presence in most normal individuals rather suggests that they have regulatory functions in circulation. As immunodominant molecules, Hsps can stimulate the immune system, leading to the production of autoantibodies recognizing epitopes shared by microbial and human Hsps. Thus, extracellular Hsps can influence the inflammatory response as evidenced by the production of inflammatory cytokines. Antibodies to Hsps have been found under normal conditions but seem to be increased in certain stresses and diseases. Such antibodies could regulate the inflammatory response positively or negatively. Here, we review the literature on the findings of antibodies to Hsps in situations of environmental or occupational stress and in a number of diseases and discuss their possible significance for the diagnosis, prognosis, or pathogenesis of these diseases.
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Affiliation(s)
- Tangchun Wu
- Institute of Occupational Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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van Halm VP, Slot MC, Nurmohamed MT, Tervaert JWC, Dijkmans BAC, Voskuyl AE. Antibodies against human 60 kDa heat shock protein are not associated with cardiovascular disease in patients with rheumatoid arthritis. Ann Rheum Dis 2005; 65:590-4. [PMID: 16249230 PMCID: PMC1798122 DOI: 10.1136/ard.2005.038828] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Rheumatoid arthritis is associated with an unexplained increased risk of cardiovascular disease (CVD). Antibodies against human 60 kDa heat shock protein (anti-HSP60) are associated with the presence and severity of CVD. OBJECTIVES To investigate whether anti-HSP60 antibodies are associated with prevalent CVD in patients with rheumatoid arthritis. METHODS In a nested case-control design, anti-HSP60 antibody levels were measured in the serum samples of 192 rheumatoid patients. In a regression analysis the association between prevalent CVD and anti-HSP60 antibodies was examined, along with the possible influence on this association of several demographic, rheumatoid arthritis, and CVD related variables. RESULTS In a random sample of 326 patients with rheumatoid arthritis, 48 cases were identified who also suffered from CVD. Three controls per case with rheumatoid arthritis but without CVD (n = 144) were matched for sex, age, disease duration, and smoking habits. A regression analysis showed no significant association between prevalent CVD and anti-HSP60 antibodies (odds ratio = 1.00 (95% confidence interval, 0.997 to 1.004)). After correcting for possible confounding variables, still no association was found. CONCLUSIONS In contrast to the general population, anti-HSP60 antibody titres are not associated with prevalent CVD in patients with rheumatoid arthritis. These findings could be the result of an altered immune response to HSP60 in rheumatoid arthritis.
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Affiliation(s)
- V P van Halm
- Department of Rheumatology, VU University Medical Centre, Amsterdam 1007 MB, Netherlands
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Zampieri S, Iaccarino L, Ghirardello A, Tarricone E, Arienti S, Sarzi-Puttini P, Gambari P, Doria A. Systemic Lupus Erythematosus, Atherosclerosis, and Autoantibodies. Ann N Y Acad Sci 2005; 1051:351-61. [PMID: 16126977 DOI: 10.1196/annals.1361.077] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Over the past number of years numerous data have been published regarding increased atherosclerosis in patients with systemic lupus erythematosus (SLE), and it has been shown that premature or accelerated atherosclerosis is an important cause of morbidity and mortality in these patients. Besides the traditional risk factors for cardiovascular disease, the association between SLE and atherosclerosis can be attributed to additional risk factors closely related to inflammation and autoimmunity. In particular, several autoantibodies and their respective autoantigens have been identified as possible factors in the development and progression of the atherosclerotic process in SLE. The understanding of SLE-related risk factors for enhanced atherosclerosis could shed more light on disease mechanisms, leading to new therapeutic strategies for the treatment of cardiovascular diseases in SLE patients. In the present paper, the biological characteristics and possible pathogenetic role of the oxidized low-density lipoprotein (oxLDL) and anti-oxLDL, beta(2)-glycoprotein I (beta(2)GPI) and anti-beta(2)GPI, and heat-shock protein 60/65 (HSP60/65) and anti-HSP60/65 autoantibody systems are summarized.
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Affiliation(s)
- Sandra Zampieri
- Division of Rheumatology, University of Padova, Via Giustiniani 2, I-35128 Padua, Italy
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Füst G, Beck Z, Bánhegyi D, Kocsis J, Bíró A, Prohászka Z. Antibodies against heat shock proteins and cholesterol in HIV infection. Mol Immunol 2005; 42:79-85. [PMID: 15488946 DOI: 10.1016/j.molimm.2004.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2004] [Accepted: 07/12/2004] [Indexed: 12/13/2022]
Abstract
This review summarizes data on the presence and function of different heat shock proteins (Hsp) in the HIV virions and the infected cells. A 60 kD heat shock protein-like molecule is present in the envelope of the human immunodeficiency virus type 1 which can specifically interact with the transmembrane glycoprotein gp41. The role of cholesterol in the so-called cholesterol-rich lipid raft where HIV is budding from the infected cells as well as the consequential insertion of cholesterol into the envelope of HIV virion are also discussed. Natural antibodies against 60 kD (Hsp60) and 70 kD (Hsp70) families of Hsp and cholesterol can be detected in most healthy individuals. HIV infection results in a sharp increase in the serum concentration of anti-Hsp70 and cholesterol antibodies whereas no difference in the concentration of anti-Hsp60 antibodies can be detected. Highly active antiretroviral therapy leads to normalization of the levels of both anti-Hsp70 and anti-cholesterol antibodies.
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Affiliation(s)
- George Füst
- Third Department of Internal Medicine, Faculty of Medicine, Semmelweis University, H-1125 Budapest, Kútvölgyi u. 4, Hungary.
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Prohászka Z, Füst G. Immunological aspects of heat-shock proteins-the optimum stress of life. Mol Immunol 2004; 41:29-44. [PMID: 15140573 DOI: 10.1016/j.molimm.2004.02.001] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2003] [Accepted: 02/04/2004] [Indexed: 11/25/2022]
Abstract
This review summarizes the complex role of heat-shock proteins (Hsp) in immune reactions, especially the cellular effects of heat-shock proteins during the recognition processes by innate immunity. The role of heat-shock proteins in the pathogenesis of two multifactorial diseases, i.e. inflammatory bowel disease (IBD) and atherosclerosis is highlighted. A new hypothesis on "immunodeficiency burden" is presented. According to this hypothesis, susceptibility to any multifactorial disease in any given subject and in the presence of specific environmental factors is the aggregate effect of polymorphisms resulting in the failure of protective immunity with consequent disease.
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Affiliation(s)
- Zoltán Prohászka
- 3rd Department of Medicine, Faculty of Medicine, Semmelweis University, H-1125 Budapest, Kútvölgyi u.4., Budapest, Hungary.
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Thordardottir S, Traustadottir KH, Erlendsson K. A discrepancy between liquid phase and gel phase assays for evaluation of total complement activity and some possible explanations. Scand J Immunol 2004; 59:574-81. [PMID: 15182253 DOI: 10.1111/j.0300-9475.2004.01438.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
This study was conducted to investigate the frequency and origin of discrepant assay results between two haemolytic assays which both measure activity of the classical pathway of complement (CH50) by haemolysis of sheep red blood cells (SRBCs). One is conducted in gel phase using undiluted sera and the other in liquid phase with sera in 1/100 dilution. The majority of discrepant readings are observed as low or absent haemolysis in the gel phase, with values within or above the normal range in the liquid phase. The incidence of discrepant assay readings was evaluated in 300 samples. Furthermore, 28 samples showing the most discrepant readings were investigated further for disturbing factors. Factors evaluated in the test sera were mannose-binding lectin, C-reactive protein (CRP), immune complexes, antibodies to SRBCs, rheumatoid factor and immunoglobulin A (IgA) and IgG anti-C1q antibodies. The results showed that discrepant readings are present in 10% of the 300 samples and false low gel assay readings account for 6.3%. The majority (68%) of the discrepant samples contained a heat-stable-inhibiting factor, and the main mediators found were elevated levels of IgA anti-C1q antibodies and antibodies to SRBCs. This could indicate a clinically relevant factor in the test sera but can also result from the difference in assay design.
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Affiliation(s)
- S Thordardottir
- Department of Immunology, Landspitali University Hospital, Reykjavik, Iceland
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Kalabay L, Fekete B, Czirják L, Horváth L, Daha MR, Veres A, Fónyad G, Horváth A, Viczián A, Singh M, Hoffer I, Füst G, Romics L, Prohászka Z. Helicobacter pylori infection in connective tissue disorders is associated with high levels of antibodies to mycobacterial hsp65 but not to human hsp60. Helicobacter 2002; 7:250-6. [PMID: 12165033 DOI: 10.1046/j.1523-5378.2002.00092.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND To investigate whether the Helicobacter pylori status influences levels of antibodies against mycobacterial heat shock protein (hsp) 65 and human hsp60 in systemic autoimmune diseases and to study the concentration of anti-H. pylori antibodies in autoimmune patients and healthy controls. MATERIALS AND METHODS Antibodies against human heat-shock protein hsp60, mycobacterial heat-shock protein hsp65 were analyzed by ELISA. Anti-Helicobacter antibodies were determined by enzyme immunoassay. RESULTS There was a markedly higher prevalence of H. pylori infection in undifferentiated connective tissue disease (82%) (n = 33) and systemic sclerosis (78%) (n = 55) but not in systemic lupus erythematosus (n = 49), polymyositis/dermatomyositis (n = 14), rheumatoid arthritis (n = 21) or primary Raynaud's syndrome (n = 26) compared with controls (59%) (n = 349). In autoimmune diseases H. pylori infection was associated with elevated levels of antihsp65 (p =.008) but not of antihsp60. Anti-hsp65 levels were significantly higher in H. pylori-infected (n = 129) than in uninfected patients (n = 69) (p =.0007). CONCLUSIONS These findings indicate that in autoimmune diseases the infection with the H. pylori bacterium is associated with increased concentration of antimycobacterial hsp65.
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Affiliation(s)
- László Kalabay
- 3rd Department of Internal Medicine, Faculty of Medicine, Semmelweis University and Research Group of Metabolism, Genetics and Immunology, Hungarian Academy of Sciences, Budapest, Hungary
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