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Hegarty C, Neto N, Cahill P, Floudas A. Computational approaches in rheumatic diseases - Deciphering complex spatio-temporal cell interactions. Comput Struct Biotechnol J 2023; 21:4009-4020. [PMID: 37649712 PMCID: PMC10462794 DOI: 10.1016/j.csbj.2023.08.005] [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: 04/04/2023] [Revised: 08/04/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023] Open
Abstract
Inflammatory arthritis, including rheumatoid (RA), and psoriatic (PsA) arthritis, are clinically and immunologically heterogeneous diseases with no identified cure. Chronic inflammation of the synovial tissue ushers loss of function of the joint that severely impacts the patient's quality of life, eventually leading to disability and life-threatening comorbidities. The pathogenesis of synovial inflammation is the consequence of compounded immune and stromal cell interactions influenced by genetic and environmental factors. Deciphering the complexity of the synovial cellular landscape has accelerated primarily due to the utilisation of bulk and single cell RNA sequencing. Particularly the capacity to generate cell-cell interaction networks could reveal evidence of previously unappreciated processes leading to disease. However, there is currently a lack of universal nomenclature as a result of varied experimental and technological approaches that discombobulates the study of synovial inflammation. While spatial transcriptomic analysis that combines anatomical information with transcriptomic data of synovial tissue biopsies promises to provide more insights into disease pathogenesis, in vitro functional assays with single-cell resolution will be required to validate current bioinformatic applications. In order to provide a comprehensive approach and translate experimental data to clinical practice, a combination of clinical and molecular data with machine learning has the potential to enhance patient stratification and identify individuals at risk of arthritis that would benefit from early therapeutic intervention. This review aims to provide a comprehensive understanding of the effect of computational approaches in deciphering synovial inflammation pathogenesis and discuss the impact that further experimental and novel computational tools may have on therapeutic target identification and drug development.
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Affiliation(s)
- Ciara Hegarty
- Translational Immunology lab, School of Biotechnology, Dublin City University, Dublin, Ireland
| | - Nuno Neto
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Ireland
| | - Paul Cahill
- Vascular Biology lab, School of Biotechnology, Dublin City University, Dublin, Ireland
| | - Achilleas Floudas
- Translational Immunology lab, School of Biotechnology, Dublin City University, Dublin, Ireland
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Meng XH, Wang Z, Zhang XN, Xu J, Hu YC. Rheumatoid Arthritis of Knee Joints: MRI-Pathological Correlation. Orthop Surg 2018; 10:247-254. [PMID: 30094941 DOI: 10.1111/os.12389] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 11/12/2017] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE To evaluate the correlation between features of knee joint rheumatoid arthritis (RA) identified on MRI and histological examination as a means of elucidating the pathogenesis of joint destruction in RA. METHODS This is a prospective analysis of 26 knee joints of 22 patients who underwent total knee arthroplasty (TKA) for the treatment of RA. Based on the degree of destruction of articular cartilage and the menisci, the occurrence of bone marrow edema and bone erosion, and synovial thickening, the stage of the knee joints were classified using MRI by two radiologists. Differences in the severity of destruction of the articular cartilage of the medial and lateral femoral condyles and medial and lateral tibial plateaus, the medial and lateral menisci, and bone were compared using analysis of variance with a post-hoc test, and the Mann-Whitney U-test. Samples of cartilage, subchondral bone, menisci, and synovium were obtained from the resected knee specimens during TKA and analyzed semiquantitatively using microscopy and immunohistochemistry. Histological differences between areas of bone erosion and bone marrow edema were evaluated using a Mann-Whitney U-test. RESULTS The extent of articular destruction was classified as grade 4 for the medial and lateral femoral condyles and the medial and lateral tibial plateaus for most patients, with an average destruction grade of 3.6 (F = 5.455, P = 0.002), with the least amount of destruction identified on the lateral femoral condyle. The majority of knee joints in the RA patients were at stage 3 (21/26, 80.8%), followed by stage 4 (4/26, 15.4%). Fibrosis, thinning and destruction, and hyperplasia were the most severe pathological changes in cartilage. In a total of 26 specimens, 36 areas of bone marrow edema and 68 areas of bone erosion were identified, with fibrosis, a mosaic structure of bone, and lymphocyte infiltration being the most severe changes in these areas. The degree of meniscus destruction was classified as grade 4 in the majority patients for both the medial and lateral meniscus, with an average degree of meniscal destruction over all specimens of 3.85, and greater destruction of the medial meniscus than of the lateral meniscus (Z = 2.062, P = 0.039). Fibrosis and engulfing calcified debris were the most severe pathological manifestations. Synovitis was also identified in all 26 specimens, with hyperplasia of intima cells and lymphocyte and plasma cell infiltration being the most severe pathological manifestations. CONCLUSIONS Severe destruction of the articular cartilage and menisci is a characteristic feature of RA. Bone marrow edema and bone erosion can both also be found, but are less characteristic. Synovial infiltration may be the triggering mechanism of the destruction of the cartilage, menisci, and bone marrow. However, the origin of bone marrow edema requires further investigation.
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Affiliation(s)
| | - Zhi Wang
- Department of Radiology, Tianjin Hospital, Tianjin, China
| | - Xue-Ning Zhang
- Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Jin Xu
- Department of Pathology, Tianjin Hospital, Tianjin, China
| | - Yong-Cheng Hu
- Department of Orthopaedic Tumor, Tianjin Hospital, Tianjin, China
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Najm A, Orr C, Heymann MF, Bart G, Veale DJ, Le Goff B. Success Rate and Utility of Ultrasound-guided Synovial Biopsies in Clinical Practice. J Rheumatol 2016; 43:2113-2119. [PMID: 27744399 DOI: 10.3899/jrheum.151441] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2016] [Indexed: 01/13/2023]
Abstract
OBJECTIVE The utility of synovial biopsy in increasing our understanding of the pathogenesis of inflammatory arthropathies, as well as in evaluating treatments, is well established. Ultrasound (US) allows synovial assessment and therefore assists in biopsying synovial tissue in a safe and well-tolerated manner. This study's objectives were to (1) determine the rate of success in retrieving synovial tissue using US guidance, (2) describe the indications for US-guided synovial biopsies in the clinical setting, (3) determine how frequently the synovial biopsy can lead to a clear diagnosis, and (4) assess the quality of the synovial tissue obtained using this technique. METHODS Synovial biopsies of small and large joints were performed under US guidance between February 2007 and December 2014 using a semiautomatic core biopsy needle. The biopsy procedure was considered successful if synovial tissue was found at histological examination. RESULTS Seventy-four patients with undifferentiated arthritis underwent 76 synovial biopsies. The success rate in retrieving synovial tissue was 81.6% (62/76). One patient taking acetyl salicylic acid at 75 mg at the time of the biopsy presented with hemarthrosis 48 h after the procedure, which resolved following simple arthrocentesis. A definitive diagnosis was achieved in 16% of the patients where synovial tissue was sampled successfully. CONCLUSION US-guided synovial biopsies in clinical practice can be performed safely on patients with undifferentiated arthritis and with heterogeneous presentations. The rate of success in acquiring synovial tissue is high. The procedure usually retrieves quality tissue and leads to a definite diagnosis in a significant minority of patients.
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Affiliation(s)
- Aurélie Najm
- From the Department of Rheumatology, and Department of Pathology, Hôtel-Dieu Hospital, Nantes, France; University College Dublin Department of Rheumatology, St. Vincent's Hospital, Dublin, Ireland.,A. Najm, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; C. Orr, MD, University College Dublin Department of Rheumatology, St. Vincent's Hospital; M.F. Heymann, MD, Department of Pathology, Hôtel-Dieu Hospital; G. Bart, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; D.J. Veale, MD, PhD, Professor, University College Dublin Department of Rheumatology, St. Vincent's Hospital; B. Le Goff, PhD, Assistant Professor, Department of Rheumatology, Hôtel-Dieu Hospital
| | - Carl Orr
- From the Department of Rheumatology, and Department of Pathology, Hôtel-Dieu Hospital, Nantes, France; University College Dublin Department of Rheumatology, St. Vincent's Hospital, Dublin, Ireland.,A. Najm, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; C. Orr, MD, University College Dublin Department of Rheumatology, St. Vincent's Hospital; M.F. Heymann, MD, Department of Pathology, Hôtel-Dieu Hospital; G. Bart, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; D.J. Veale, MD, PhD, Professor, University College Dublin Department of Rheumatology, St. Vincent's Hospital; B. Le Goff, PhD, Assistant Professor, Department of Rheumatology, Hôtel-Dieu Hospital
| | - Marie-Françoise Heymann
- From the Department of Rheumatology, and Department of Pathology, Hôtel-Dieu Hospital, Nantes, France; University College Dublin Department of Rheumatology, St. Vincent's Hospital, Dublin, Ireland.,A. Najm, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; C. Orr, MD, University College Dublin Department of Rheumatology, St. Vincent's Hospital; M.F. Heymann, MD, Department of Pathology, Hôtel-Dieu Hospital; G. Bart, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; D.J. Veale, MD, PhD, Professor, University College Dublin Department of Rheumatology, St. Vincent's Hospital; B. Le Goff, PhD, Assistant Professor, Department of Rheumatology, Hôtel-Dieu Hospital
| | - Géraldine Bart
- From the Department of Rheumatology, and Department of Pathology, Hôtel-Dieu Hospital, Nantes, France; University College Dublin Department of Rheumatology, St. Vincent's Hospital, Dublin, Ireland.,A. Najm, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; C. Orr, MD, University College Dublin Department of Rheumatology, St. Vincent's Hospital; M.F. Heymann, MD, Department of Pathology, Hôtel-Dieu Hospital; G. Bart, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; D.J. Veale, MD, PhD, Professor, University College Dublin Department of Rheumatology, St. Vincent's Hospital; B. Le Goff, PhD, Assistant Professor, Department of Rheumatology, Hôtel-Dieu Hospital
| | - Douglas J Veale
- From the Department of Rheumatology, and Department of Pathology, Hôtel-Dieu Hospital, Nantes, France; University College Dublin Department of Rheumatology, St. Vincent's Hospital, Dublin, Ireland.,A. Najm, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; C. Orr, MD, University College Dublin Department of Rheumatology, St. Vincent's Hospital; M.F. Heymann, MD, Department of Pathology, Hôtel-Dieu Hospital; G. Bart, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; D.J. Veale, MD, PhD, Professor, University College Dublin Department of Rheumatology, St. Vincent's Hospital; B. Le Goff, PhD, Assistant Professor, Department of Rheumatology, Hôtel-Dieu Hospital
| | - Benoît Le Goff
- From the Department of Rheumatology, and Department of Pathology, Hôtel-Dieu Hospital, Nantes, France; University College Dublin Department of Rheumatology, St. Vincent's Hospital, Dublin, Ireland. .,A. Najm, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; C. Orr, MD, University College Dublin Department of Rheumatology, St. Vincent's Hospital; M.F. Heymann, MD, Department of Pathology, Hôtel-Dieu Hospital; G. Bart, MD, Resident, Department of Rheumatology, Hôtel-Dieu Hospital; D.J. Veale, MD, PhD, Professor, University College Dublin Department of Rheumatology, St. Vincent's Hospital; B. Le Goff, PhD, Assistant Professor, Department of Rheumatology, Hôtel-Dieu Hospital.
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Significance of circulating and crevicular matrix metalloproteinase-9 in rheumatoid arthritis-chronic periodontitis association. J Immunol Res 2015; 2015:218060. [PMID: 25821836 PMCID: PMC4363716 DOI: 10.1155/2015/218060] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 01/18/2015] [Accepted: 01/18/2015] [Indexed: 01/02/2023] Open
Abstract
In the recent years, statistically significant associations between rheumatoid arthritis (RA) and
periodontal disease have been identified. Emerging as a chronic inflammatory joint disease, RA displays various features and pathogenetic events similar to chronic periodontitis (CP). The purpose of this study was to evaluate the utility of determining systemic and crevicular levels of metalloproteinase-9 (MMP-9) as potential biomarkers for association between RA and CP. A total of fifty-six patients were included in the study. The subjects were categorized into four groups as follows: healthy-control (n = 21), active RA (n = 16), CP (n = 14), and RA-CP association (n = 12). Assessment of serum and crevicular concentrations of total MMP-9 (active and pro-MMP-9) was based on ELISA technique. The results of this study showed statistically significant differences of serum MMP-9 between patients groups and control. Serum levels of MMP-9 were similar in RA and RA-CP associated patients. Gingival crevicular fluid (GCF) recorded increased MMP-9 levels in RA-CP association subjects as compared to CP. Considering that RA-CP association is characterized by a disregulation of the inflammatory response, MMP-9 may play a role in the pathogenesis of RA-CP association. MMP-9 is therefore a sensitive tool in the diagnosis and management of patients affected by this binomial association.
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Wang SC, Xie Q, LV WF. Positron emission tomography/computed tomography imaging and rheumatoid arthritis. Int J Rheum Dis 2014; 17:248-55. [PMID: 24606324 DOI: 10.1111/1756-185x.12316] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shi-Cun Wang
- PET/CT Center; Anhui Provincial Hospital; Hefei Anhui China
| | - Qiang Xie
- PET/CT Center; Anhui Provincial Hospital; Hefei Anhui China
| | - Wei-Fu LV
- Department of Radiology; Anhui Provincial Hospital; Hefei Anhui China
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Kelly S, Humby F, Filer A, Ng N, Di Cicco M, Hands RE, Rocher V, Bombardieri M, D'Agostino MA, McInnes IB, Buckley CD, Taylor PC, Pitzalis C. Ultrasound-guided synovial biopsy: a safe, well-tolerated and reliable technique for obtaining high-quality synovial tissue from both large and small joints in early arthritis patients. Ann Rheum Dis 2013; 74:611-7. [PMID: 24336336 DOI: 10.1136/annrheumdis-2013-204603] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To determine the tolerability, safety and yield of synovial tissue in an early arthritis cohort using a minimally invasive, ultrasound (US)-guided, synovial biopsy technique in small, medium and large joints. METHODS 93 sequential biopsy procedures were assessed from a total of 57 patients (baseline and 36 repeat biopsies at 6 months) recruited as part of the 'Pathobiology of Early Arthritis Cohort' study. Patients completed a tolerability questionnaire prior to and following the synovial biopsy procedure. The synovial biopsy was performed under US guidance with US images of the joint recorded prior to each procedure. Synovial tissue was harvested for immunohistochemistry and RNA extraction. RESULTS Five different joint sites were biopsied (knee, elbow, wrist, metacarpal phalangeal and proximal interphalangeal). No significant complications were reported following the procedure. No difference in pain, swelling and stiffness of the biopsied joint from before and after the procedure was demonstrated. A median of 14 biopsy samples was retrieved from each procedure with 93% of biopsy procedures yielding good quality tissue. RNA yield was good in all joints and in repeat biopsies. Multivariant analysis demonstrated a significantly greater yield of RNA and graded tissue in relation to a high prebiopsy, grey-scale synovitis score (0-3, semiquantitative). CONCLUSIONS A minimally invasive approach to synovial tissue harvesting, using US guidance, is both safe and well-tolerated by patients. Tissue quality/RNA yield is preserved in subsequent biopsies following therapeutic intervention. A high US grey-scale synovitis score is a predictor of good quality/quantity of tissue and RNA.
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Affiliation(s)
- S Kelly
- Rheumatology Department, Mile End Hospital, Barts Health NHS Trust, London, UK
| | - F Humby
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - A Filer
- School of Immunity and Infection, MRC Centre for Immune Regulation, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, UK
| | - N Ng
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - M Di Cicco
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - R E Hands
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - V Rocher
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - M Bombardieri
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - M A D'Agostino
- Université Paris Ouest-Versailles Saint Quentin en Yvelines, Hôpital Ambroise Paré, Service de Rhumatologie, 9 Avenue Charles de Gaulle, Boulogne-Billancourt, France
| | - I B McInnes
- University of Glasgow, Centre for Rheumatic Diseases, Glasgow Royal Infirmary, Glasgow, UK
| | - C D Buckley
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
| | - P C Taylor
- Nuffield Department of Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, Nuffield Orthopaedic Centre, Oxford, UK
| | - C Pitzalis
- Queen Marys University of London, Experimental Medicine and Rheumatology, William Harvey Research Institute, Charterhouse Square, London, UK
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Lanfant-Weybel K, Michot C, Daveau R, Milliez PY, Auquit-Auckbur I, Fardellone P, Brazier M, Mejjad O, Daragon A, Krzanowska K, Jouen F, Tron F, Le Loarer F, Le Loët X, Vittecoq O. Synovium CD20 expression is a potential new predictor of bone erosion progression in very-early arthritis treated by sequential DMARDs monotherapy -- a pilot study from the VErA cohort. Joint Bone Spine 2012; 79:574-80. [PMID: 22459417 DOI: 10.1016/j.jbspin.2011.11.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 11/21/2011] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Because available biomarkers (rheumatoid factors [RF], anti-cyclic citrullinated autoantibodies [anti-CCP2], erythrocyte sedimentation rate at 1st hour [ESR]/C-reactive peptide [CRP] and bone erosions) are insufficient to predict rheumatoid arthritis (RA) structural damage, to determine whether synovium expression of greater or equal to 1 markers could constitute new prognostic factor(s). METHOD The study was conducted on 18 prospectively enrolled disease-modifying anti-rheumatic drug (DMARD)- and glucocorticoid-naïve, VErA cohort patients with very-early arthritis (median duration: 4months). Recorded at baseline were: clinical and biological (serum ESR, CRP, RF-isotypes, anti-CCP2, osteoprotegerin, receptor activator of nuclear κB-ligand [RANK-L] and cartilage oligomeric matrix protein [COMP] levels) data; synovium expression (HLA-DR, CD163, CD3, CD20, VEGF, osteoprotegerin, RANK-L, Bcl2 and global inflammation index) for a metacarpophalangeal joint-synovium biopsy. Baseline and 3-year hand-and-foot X-rays were graded with the van der Heijde-modified-Sharp score; the judgment criterion was its progression during follow-up. Pearson's product moment correlation statistics were used to test for association between paired samples. RESULTS A baseline, a significant relationship was found between erosive damage and markers of B-cell activation, notably the synovium CD20 expression (r=0.68; P=0.0001). Quantified by the modified-Sharp erosion score variation, the 3-year structural damage progression was significantly correlated with: serum levels of RF-IgG (r=0.75; P=0.0003), -IgM (r=0.69; P=0.001), anti-CCP2 (r=0.53; P=0.02) and RANK-L (r=0.61; P=0.007); synovium CD20 expression (r=0.70; P=0.001). CONCLUSION This analysis of the prognostic value of a large panel of synovium markers in a limited sample of prospectively followed, well-documented patients suggested that both synovial CD20 and serum RANK-L levels might be new predictors of structural damage progression in very-early RA.
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Affiliation(s)
- Karine Lanfant-Weybel
- INSERM U905, Department of Rheumatology, University of Rouen, Institute for Biomedical Research, Rouen University Hospital, Rouen, France
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Vordenbäumen S, Joosten LA, Friemann J, Schneider M, Ostendorf B. Utility of synovial biopsy. Arthritis Res Ther 2009; 11:256. [PMID: 19951395 PMCID: PMC3003519 DOI: 10.1186/ar2847] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Synovial biopsies, gained either by blind needle biopsy or minimally invasive arthroscopy, offer additional information in certain clinical situations where routine assessment has not permitted a certain diagnosis. In research settings, synovial histology and modern applications of molecular biology increase our insight into pathogenesis and enable responses to treatment with new therapeutic agents to be assessed directly at the pathophysiological level. This review focuses on the diagnostic usefulness of synovial biopsies in the light of actual developments.
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Affiliation(s)
- Stefan Vordenbäumen
- Department of Endocrinology, Diabetology, and Rheumatology, Heinrich Heine University, 40225 Düsseldorf, Germany.
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Smolen JS, Aletaha D, Grisar J, Redlich K, Steiner G, Wagner O. The need for prognosticators in rheumatoid arthritis. Biological and clinical markers: where are we now? Arthritis Res Ther 2008; 10:208. [PMID: 18557991 PMCID: PMC2483438 DOI: 10.1186/ar2418] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Rheumatoid arthritis is a heterogeneous disease with respect to clinical manifestations, serologic abnormalities, joint damage and functional impairment. Predicting outcome in a reliable way to allow for strategic therapeutic decision-making as well as for prediction of the response to the various therapeutic modalities available today, especially biological agents, would provide means for optimization of care. In the present article, the current information on biological and clinical markers related to disease activity and joint damage as well as for predictive purposes is reviewed. It will be shown that the relationship of many biomarkers with disease characteristics is confounded by factors unrelated to the disease, and that only few biomarkers exist with some predictive value. Moreover, clinical markers appear of equal value as biomarkers for this purpose, although they likewise have limited capacity in these regards. The analysis suggests the search for better markers to predict outcomes and therapeutic responsiveness in rheumatoid arthritis needs to be intensified.
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Affiliation(s)
- Josef S Smolen
- Division of Rheumatology, Department of Internal Medicine III, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria.
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Cope AP. Rheumatoid arthritis. Clin Immunol 2008. [DOI: 10.1016/b978-0-323-04404-2.10052-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kragstrup TW, Otkjaer K, Holm C, Jørgensen A, Hokland M, Iversen L, Deleuran B. The expression of IL-20 and IL-24 and their shared receptors are increased in rheumatoid arthritis and spondyloarthropathy. Cytokine 2007; 41:16-23. [PMID: 18061474 DOI: 10.1016/j.cyto.2007.10.004] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Revised: 10/02/2007] [Accepted: 10/14/2007] [Indexed: 01/03/2023]
Abstract
The purpose of this study was to analyze the expression of the two proinflammatory cytokines IL-20 and IL-24 and their shared receptors in rheumatoid arthritis and spondyloarthropathy. IL-20 was increased in plasma of rheumatoid arthritis patients compared with osteoarthritis patients and IL-24 was increased in synovial fluid and plasma of rheumatoid arthritis and spondyloarthropathy patients compared with osteoarthritis patients. IL-20 and IL-24 mRNA was only present at low levels in the synovium. In the synovial membrane, IL-20 protein was present in mononuclear cells and neutrophil granulocytes whereas IL-24 protein was observed in endothelial cells and mononuclear cells. IL-20 receptor type 1 and IL-22 receptor were expressed by granulocytes in the synovial fluid. In synovial fluid mononuclear cell cultures, stimulation with recombinant human IL-20 or recombinant human IL-24 induced monocyte chemoattractant protein 1 (CCL2/MCP-1) secretion, but not tumour necrosis factor alpha mRNA synthesis or IL-6 secretion. Both IL-20 and IL-24 showed correlations to CCL2/MCP-1 in plasma from rheumatoid arthritis and spondyloarthropathy patients. This study associates IL-20 and IL-24 to the synovium of rheumatoid arthritis and spondyloarthropathy and results indicate that the two cytokines contribute to disease pathogenesis through recruitment of neutrophil granulocytes and induction of CCL2/MCP-1.
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Affiliation(s)
- Tue Wenzel Kragstrup
- Institute of Medical Microbiology and Immunology, Aarhus University, Building 240, Wilhelm Meyers Allé, DK-8000 Aarhus C, Denmark.
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Adriaansen J, Kuhlman RR, van Holten J, Kaynor C, Vervoordeldonk MJBM, Tak PP. Intraarticular interferon-beta gene therapy ameliorates adjuvant arthritis in rats. Hum Gene Ther 2007; 17:985-96. [PMID: 16984225 DOI: 10.1089/hum.2006.17.985] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Interferon (IFN)-beta has significant immunomodulatory properties and has received much interest as a potentially therapeutic agent for rheumatoid arthritis (RA). Systemic IFN-beta treatment of patients with RA was not effective, probably because of pharmacokinetic issues. Therefore, we studied the effect of local IFN-beta production by adenovirus-mediated gene transfer to the ankle joints of arthritic rats. Adjuvant arthritis (AA) in rats was used as a model to study intraarticular gene therapy with an adenoviral vector encoding the rat IFN-beta gene (Ad.IFN-beta). The effect on paw swelling was measured by water displacement plethysmometry. Synovial tissue of the hind paws was examined by immunohistochemistry. Bone destruction was analyzed on the basis of radiographs. In addition, quantitative real-time polymerase chain reaction was used to assess IFN-beta expression. Levels of IFN-beta mRNA and protein peaked 2 days after intraarticular injection and declined thereafter. Local delivery of Ad.IFN-beta after the onset of disease reduced paw swelling significantly. This was accompanied by a reduction in synovial inflammation. The clinical effects in rat AA lasted up to 9 days. Strikingly, Ad.IFN-beta treatment protected bone from erosion, reduced levels of c-Cbl and Cbl-b (both signaling molecules essential for osteoclast activity), and reduced the matrix metalloproteinase-3:tissue inhibitor of metalloproteinase-1 ratio in the joint. Immunohistochemical analysis of the synovial tissue revealed a clear shift toward a more antiinflammatory cytokine profile. Local overexpression of IFN-beta inhibits arthritis progression and protects against bone destruction in rat AA. These findings validate IFN-beta as a therapeutic molecule for intraarticular gene therapy of arthritis.
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Affiliation(s)
- J Adriaansen
- Division of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, The Netherlands
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Gerlag DM, Boyle DL, Rosengren S, Nash T, Tak PP, Firestein GS. Real-time quantitative PCR to detect changes in synovial gene expression in rheumatoid arthritis after corticosteroid treatment. Ann Rheum Dis 2006; 66:545-7. [PMID: 16984938 PMCID: PMC1856037 DOI: 10.1136/ard.2006.059790] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Synovial biomarkers are increasingly important in the development of novel therapeutic agents for the treatment of rheumatoid arthritis (RA). To identify biomarkers correlating with changes in clinical disease activity, real-time quantitative PCR (Q-PCR) was used to evaluate changes in synovial gene expression after treatment with corticosteroids. Patients with active RA received either oral prednisolone (n=10, 60 mg daily for the first week and 40 mg daily for the second week) or placebo (n=11) for 14 days. Real-time Q-PCR was used to quantify gene expression of tumour necrosis factor (TNF)alpha, IL1beta, IL8 and matrix metalloproteinase (MMP) 1 in synovial tissue samples obtained through an arthroscopic procedure before and after treatment. mRNA levels were reported as relative expression units compared with a cell-based standard. Statistical analysis was performed using an analysis of covariance model. Prednisolone markedly decreased IL8 and MMP1 expression compared with placebo, and the CIs excluded the likelihood of no effect. A trend towards reduction was seen in IL1beta and TNFalpha mRNA expression in the prednisolone group, although CIs included the value for no effect. These data suggest that Q-PCR can be used to measure synovial mRNA expression of mediators implicated in the pathogenesis of RA in small proof-of-concept trials.
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Affiliation(s)
- Danielle M Gerlag
- Division of Clinical Immunology and Rheumatology, F4-218, Academic Medical Center, University of Amsterdam, PO Box 22700, 1100 DE, Amsterdam, The Netherlands
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Adriaansen J, Kuhlman R, Holten JV, Kaynor C, Vervoordeldonk M, Tak P. Intraarticular Interferon- ?Gene Therapy Ameliorates Adjuvant Arthritis in Rats. Hum Gene Ther 2006. [DOI: 10.1089/hum.2006.17.ft-243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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16
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Joosten LAB, Netea MG, Kim SH, Yoon DY, Oppers-Walgreen B, Radstake TRD, Barrera P, van de Loo FAJ, Dinarello CA, van den Berg WB. IL-32, a proinflammatory cytokine in rheumatoid arthritis. Proc Natl Acad Sci U S A 2006; 103:3298-303. [PMID: 16492735 PMCID: PMC1413916 DOI: 10.1073/pnas.0511233103] [Citation(s) in RCA: 274] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
IL-32 is a recently discovered cytokine that induces TNFalpha, IL-1beta, IL-6, and chemokines. We investigated whether IL-32 is expressed in the synovia of patients with rheumatoid arthritis (RA) and studied associations with disease severity and the presence of other cytokines. Immunohistochemistry revealed that IL-32 is highly expressed in RA synovial tissue biopsies, whereas IL-32 was not observed in synovial tissues from patients with osteoarthritis. Moreover, in synovial biopsies from 29 RA patients with active disease, the level of IL-32 staining correlated with erythrocyte sedimentation rate, a marker of systemic inflammation (R = 0.63 and P < 0.0003). Synovial staining of IL-32 also correlated with indices of synovial inflammation (R = 0.80 and P < 0.0001) as well as synovial presence of TNFalpha (R = 0.68 and P < 0.004), IL-1beta (R = 0.79 and P < 0.0001), and IL-18 (R = 0.82 and P < 0.001). IL-32 was a potent inducer of prostaglandin E(2) release in mouse macrophages and human blood monocytes, an important property for inflammation. After the injection of human IL-32gamma into the knee joints of naïve mice, joint swelling, with pronounced influx of inflammatory cells and cartilage damage, was observed. In TNFalpha-deficient mice, IL-32-driven joint swelling was absent and cell influx was markedly reduced, but loss of proteoglycan was unaffected, suggesting that IL-32 activity is, in part, TNFalpha-dependent. IL-32, strongly associated with TNFalpha, IL-1beta, and IL-18, appears to play a role in human RA and may be a novel target in autoimmune diseases.
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Affiliation(s)
- Leo A. B. Joosten
- *Rheumatology Research and Advanced Therapeutics and Departments of
- To whom correspondence may be addressed at:
Rheumatology Research and Advanced Therapeutics, Department of Rheumatology, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands. E-mail:
| | - Mihai G. Netea
- Internal Medicine, Radboud University Nijmegen Medical Centre, 6500 HB, Nijmegen, The Netherlands
| | - Soo-Hyun Kim
- Division of Infectious Diseases, University of Colorado Health Sciences Center, Denver, CO 80262; and
| | - Do-Young Yoon
- Department of Biology, Korea Research Institute of Biotechnology, Taejeon 305-600, Korea
| | | | | | | | | | - Charles A. Dinarello
- Division of Infectious Diseases, University of Colorado Health Sciences Center, Denver, CO 80262; and
- **To whom correspondence may be addressed. E-mail:
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Haringman JJ, Vinkenoog M, Gerlag DM, Smeets TJM, Zwinderman AH, Tak PP. Reliability of computerized image analysis for the evaluation of serial synovial biopsies in randomized controlled trials in rheumatoid arthritis. Arthritis Res Ther 2005; 7:R862-7. [PMID: 15987488 PMCID: PMC1175038 DOI: 10.1186/ar1757] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Revised: 04/13/2005] [Accepted: 04/14/2005] [Indexed: 11/16/2022] Open
Abstract
Analysis of biomarkers in synovial tissue is increasingly used in the evaluation of new targeted therapies for patients with rheumatoid arthritis (RA). This study determined the intrarater and inter-rater reliability of digital image analysis (DIA) of synovial biopsies from RA patients participating in clinical trials. Arthroscopic synovial biopsies were obtained before and after treatment from 19 RA patients participating in a randomized controlled trial with prednisolone. Immunohistochemistry was used to detect CD3+ T cells, CD38+ plasma cells and CD68+ macrophages. The mean change in positive cells per square millimetre for each marker was determined by different operators and at different times using DIA. Nonparametric tests were used to determine differences between observers and assessments, and to determine changes after treatment. The intraclass correlations (ICCs) were calculated to determine the intrarater and inter-rater reliability. Intrarater ICCs showed good reliability for measuring changes in T lymphocytes (R = 0.87), plasma cells (R = 0.62) and macrophages (R = 0.73). Analysis by Bland–Altman plots showed no systemic differences between measurements. The smallest detectable changes were calculated and their discriminatory power revealed good response in the prednisolone group compared with the placebo group. Similarly, inter-rater ICCs also revealed good reliability for measuring T lymphocytes (R = 0.68), plasma cells (R = 0.69) and macrophages (R = 0.72). All measurements identified the same cell types as changing significantly in the treated patients compared with the placebo group. The measurement of change in total positive cell numbers in synovial tissue can be determined reproducibly for various cell types by DIA in RA clinical trials.
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Affiliation(s)
- Jasper J Haringman
- Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, The Netherlands
| | - Marjolein Vinkenoog
- Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, The Netherlands
| | - Danielle M Gerlag
- Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, The Netherlands
| | - Tom JM Smeets
- Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, The Netherlands
| | - Aeilko H Zwinderman
- Department of Clinical Epidemiology and Biostatistics, Academic Medical Center/University of Amsterdam, The Netherlands
| | - Paul P Tak
- Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, The Netherlands
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Radstake TRDJ, van Lieshout AWT, van Riel PLCM, van den Berg WB, Adema GJ. Dendritic cells, Fc{gamma} receptors, and Toll-like receptors: potential allies in the battle against rheumatoid arthritis. Ann Rheum Dis 2005; 64:1532-8. [PMID: 15878905 PMCID: PMC1755288 DOI: 10.1136/ard.2004.033779] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent findings suggest an important role for Fcgamma receptors and Toll-like receptors expressed by dendritic cells (DC) in the pathogenesis of rheumatoid arthritis (RA). Possibly, DC behaviour might be tuned to counteract the misbalanced immune system in RA. Understanding the precise mechanisms that determine the skewed immune response in RA may provide new clues for the therapeutic use of DC in RA.
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Affiliation(s)
- T R D J Radstake
- Department of Rheumatology, University Medical Centre Nijmegen, PO Box 9101, 6500 HB Nijmegen, The Netherlands.
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Radstake TRDJ, Roelofs MF, Jenniskens YM, Oppers-Walgreen B, van Riel PLCM, Barrera P, Joosten LAB, van den Berg WB. Expression of toll-like receptors 2 and 4 in rheumatoid synovial tissue and regulation by proinflammatory cytokines interleukin-12 and interleukin-18 via interferon-gamma. ACTA ACUST UNITED AC 2005; 50:3856-65. [PMID: 15593217 DOI: 10.1002/art.20678] [Citation(s) in RCA: 248] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To study the expression of Toll-like receptor 2 (TLR-2) and TLR-4 and its association with proinflammatory cytokines in synovial tissue from patients with rheumatoid arthritis (RA), osteoarthritis (OA), and healthy individuals. METHODS Synovial tissue specimens from 29 RA patients were stained for TLR-2, TLR-4, and proinflammatory cytokines (interleukin-1beta [IL-1beta], IL-12, IL-17, IL-18, and tumor necrosis factor alpha [TNFalpha]). The expression of TLR-2, TLR-4, and cytokines as well as the degree of inflammation in synovial tissue were compared between patients with RA, patients with OA (n = 5), and healthy individuals (n = 3). Peripheral blood mononuclear cells (PBMCs) were incubated with IL-12 and IL-18, and TLR expression was assessed using fluorescence-activated cell sorter analysis. Production of TNFalpha and IL-6 was measured using Luminex bead array technology. RESULTS In RA synovial tissue, the expression of TLR-2 was slightly higher than that of TLR-4. Interestingly, both TLR-2 and TLR-4 were expressed at higher levels in moderately inflamed synovium, as compared with synovial tissue with no or severe inflammation. TLR expression in both the lining and the sublining was associated with the presence of IL-12 and IL-18, but no other cytokines, in the lining. The expression of both TLRs was low in synovial tissue from OA patients and healthy donors. Stimulation of PBMCs with IL-12 and IL-18 resulted in increased expression of both TLR-2 and TLR-4; this could be blocked with anti-interferon-gamma (anti-IFNgamma) antibodies, suggesting a role for IFNgamma. Lipopolysaccharide- or lipoteichoic acid-mediated triggering of PBMCs incubated with IL-12/IL-18 or IFNgamma led to an increased production of both TNFalpha and IL-6, indicating the functionality of TLR-2 and TLR-4. CONCLUSION TLR-2 and TLR-4 are expressed in synovial tissue of patients with clinically active disease and are associated with the levels of both IL-12 and IL-18. The synergistic effect of IL-12 and IL-18 on T cell IFNgamma production seems to regulate expression of TLR-2 and TLR-4 in the synovial tissue of RA patients.
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Radstake TRDJ, van der Voort R, ten Brummelhuis M, de Waal Malefijt M, Looman M, Figdor CG, van den Berg WB, Barrera P, Adema GJ. Increased expression of CCL18, CCL19, and CCL17 by dendritic cells from patients with rheumatoid arthritis, and regulation by Fc gamma receptors. Ann Rheum Dis 2004; 64:359-67. [PMID: 15331393 PMCID: PMC1755402 DOI: 10.1136/ard.2003.017566] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Dendritic cells (DC) have a role in the regulation of immunity and tolerance, attracting inflammatory cells by the production of various chemokines (CK). Fc gamma receptors (Fc gamma R) may be involved in regulation of the DC function. OBJECTIVE To assess the expression of CK by immature (iDC) and mature DC (mDC) and its regulation by Fc gamma R in patients with RA and healthy donors (HC). METHODS Expression of CK by DC from patients with RA and from HC was determined by real time quantitative PCR and ELISA. DC were derived from monocytes following standardised protocols. To study the potential regulation by Fc gamma R, iDC were stimulated with immune complexes (IC) during lipopolysaccharide (LPS) induced maturation. The presence of CK was studied in synovial tissue from patients with RA, osteoarthritis, and healthy subjects by RT-PCR and immunohistochemistry. RESULTS iDC from patients with RA had markedly increased mRNA levels of the CK CCL18 and CXCL8. Upon maturation with LPS, expression of CCL18, CCL19, CXCL8, CCL3, and CCL17 increased dramatically, reaching significantly higher levels in patients with RA. Monocytes failed to express these CK, except for CXCL8 and CCL3. IC-mediated triggering of the Fc gamma R on DC from patients with highly active RA down regulated all CK, whereas the reverse was seen when DC from patients with low disease activity and healthy donors were stimulated. CCL18 was significantly increased in RA synovial tissue. CONCLUSION Increased CK expression by DC was found in patients with RA. This expression is partly regulated by Fc gamma R triggering and results in an inhibitory DC subtype in RA upon Fc gamma R-mediated triggering.
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Affiliation(s)
- T R D J Radstake
- Department of Rheumatology, University Medical Centre Nijmegen, The Netherlands.
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21
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Foell D, Wittkowski H, Hammerschmidt I, Wulffraat N, Schmeling H, Frosch M, Horneff G, Kuis W, Sorg C, Roth J. Monitoring neutrophil activation in juvenile rheumatoid arthritis by S100A12 serum concentrations. ACTA ACUST UNITED AC 2004; 50:1286-95. [PMID: 15077313 DOI: 10.1002/art.20125] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Phagocytes are extensively involved in the synovial inflammation associated with chronic arthritis. The aim of our study was to determine neutrophil activation in juvenile rheumatoid arthritis (JRA) by analyzing S100A12 (EN-RAGE; calgranulin C), a proinflammatory protein secreted by human neutrophils. METHODS S100A12 serum concentrations were determined in 124 patients with chronic active polyarticular-, oligoarticular-, or systemic-onset JRA. S100A12 was also analyzed in synovial fluid obtained from 22 patients. Changes in S100A12 levels in response to anti-tumor necrosis factor alpha (anti-TNF alpha) therapy, intraarticular injections of corticosteroids, and methotrexate (MTX) treatment were analyzed. Forty-five patients were followed up after successful antiinflammatory treatment, for a mean period of 2.8 years. RESULTS The mean serum level of S100A12 was 395 ng/ml in patients with active polyarticular JRA and 325 ng/ml in patients with active oligoarticular JRA (normal <120 ng/ml). The level of S100A12 was approximately 10-fold higher in synovial fluid than in serum, indicating release at sites of local inflammation. In patients with systemic-onset JRA, the mean level of S100A12 was 3,700 ng/ml. Moreover, serum levels decreased in response to different antiinflammatory therapies (i.e., intraarticular injections of corticosteroids, MTX, or etanercept). S100A12 levels were elevated in 20 patients who experienced disease flares after the initial induction of remission, even weeks before the relapses became clinically apparent. CONCLUSION S100A12 serum concentrations indicate neutrophil activation in JRA and correlate with disease activity. S100A12 may indicate synovial inflammation even when other signs of arthritis are absent. Its function as a proinflammatory factor secreted by activated neutrophils makes this protein a potential target for future therapies.
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Affiliation(s)
- Dirk Foell
- Institute of Experimental Dermatology and Department of Pediatrics, University of Muenster, Muenster, Germany.
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Boyle DL, Rosengren S, Bugbee W, Kavanaugh A, Firestein GS. Quantitative biomarker analysis of synovial gene expression by real-time PCR. Arthritis Res Ther 2003; 5:R352-60. [PMID: 14680510 PMCID: PMC333415 DOI: 10.1186/ar1004] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2003] [Revised: 08/05/2003] [Accepted: 08/19/2003] [Indexed: 11/10/2022] Open
Abstract
Synovial biomarker analysis in rheumatoid arthritis can be used to evaluate drug effect in clinical trials of novel therapeutic agents. Previous studies of synovial gene expression for these studies have mainly relied on histological methods including immunohistochemistry and in situ hybridization. To increase the reliability of mRNA measurements on small synovial tissue samples, we developed and validated real time quantitative PCR (Q-PCR) methods on biopsy specimens. RNA was isolated from synovial tissue and cDNA was prepared. Cell-based standards were prepared from mitogen-stimulated peripheral blood mononuclear cells. Real time PCR was performed using TaqMan chemistry to quantify gene expression relative to the cell-based standard. Application of the cellular standard curve method markedly reduced intra- and inter-assay variability and corrected amplification efficiency errors compared with the C(t) method. The inter-assay coefficient of variation was less than 25% over time. Q-PCR methods were validated by demonstrating increased expression of IL-1beta and IL-6 expression in rheumatoid arthritis synovial samples compared with osteoarthritis synovium. Based on determinations of sampling error and coefficient of variation, twofold differences in gene expression in serial biopsies can be detected by assaying approximately six synovial tissue biopsies from 8 to 10 patients. These data indicate that Q-PCR is a reliable method for determining relative gene expression in small synovial tissue specimens. The technique can potentially be used in serial biopsy studies to provide insights into mechanism of action and therapeutic effect of new anti-inflammatory agents.
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Affiliation(s)
- David L Boyle
- Center for Innovative Therapy, Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, California, USA.
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Gáspár L, Szekanecz Z, Dezso B, Szegedi G, Csernátony Z, Szepesi K. Technique of synovial biopsy of metacarpophalangeal joints using the needle arthroscope. Knee Surg Sports Traumatol Arthrosc 2003; 11:50-2. [PMID: 12548452 DOI: 10.1007/s00167-002-0329-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2001] [Accepted: 08/20/2002] [Indexed: 11/29/2022]
Abstract
We demonstrate the technique, advantages, and disadvantages of metacarpophalangeal joint examination with needle arthroscope. We evaluated our experience from biopsies of 10 metacarpophalangeal joints of eight rheumatoid women aged 41-45 years. The procedures were performed using a 1-mm needle arthroscope. The synovium biopsy was taken with a microforceps. The procedure was performed under local anesthesia. The tight tension of the joint and traction of the finger is necessary for good visualization, but despite this visibility can be difficult. Needle biopsy is a useful method for the early diagnosis of rheumatoid arthritis.
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Affiliation(s)
- Levente Gáspár
- Department of Orthopedics, Medical Health and Science CenterUniversity of Debrecen, Nagyerdei krt. 98, 4012, Debrecen, Hungary.
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Kraan MC, van Kuijk AWR, Dinant HJ, Goedkoop AY, Smeets TJM, de Rie MA, Dijkmans BAC, Vaishnaw AK, Bos JD, Tak PP. Alefacept treatment in psoriatic arthritis: reduction of the effector T cell population in peripheral blood and synovial tissue is associated with improvement of clinical signs of arthritis. ARTHRITIS AND RHEUMATISM 2002; 46:2776-84. [PMID: 12384938 DOI: 10.1002/art.10543] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To investigate whether alefacept (a fully human lymphocyte function-associated antigen 3 [LFA-3]/IgG1 fusion protein that blocks the LFA-3/CD2 interaction) is able to reduce the signs and symptoms of joint inflammation in patients with active psoriatic arthritis (PsA). METHODS Eleven patients with active PsA were treated with alefacept for 12 weeks in an open-label and explorative study. Clinical joint assessment and laboratory assessments were performed at baseline and after 4, 9, 12, and 16 weeks of treatment. Serial synovial tissue (ST) biopsy specimens from an inflamed index joint (knee, ankle, wrist, or metacarpophalangeal joint) were obtained by arthroscopy at baseline and after 4 and 12 weeks of treatment. RESULTS At the completion of treatment, 6 of 11 patients (55%) fulfilled the Disease Activity Score (DAS) response criteria. Nine patients (82%) fulfilled the DAS response criteria at any point during the study. There was a statistically significant reduction in CD4+ lymphocytes (P < 0.05), CD8+ lymphocytes (P = 0.05), and CD68+ macrophages (P < 0.02) in the ST after 12 weeks of treatment compared with baseline. The ST and peripheral blood of those patients fulfilling the DAS response criteria contained more CD45RO+ cells at baseline and displayed a significant reduction in these cells compared with nonresponding patients. CONCLUSION The changes in ST, together with the improvement in clinical joint scores, after treatment with alefacept support the hypothesis that T cell activation plays an important role in this chronic inflammatory disease. Furthermore, since alefacept, a T cell-specific agent, led to decreased macrophage infiltration, the data indicate that T cells are highly involved in synovial inflammation in PsA.
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Affiliation(s)
- Maarten C Kraan
- Division of Clinical Immunology and Rheumatology F4-218, Academic Medical Center/University of Amsterdam, Meibergdreef 9, NL-1105 AZ Amsterdam, The Netherlands.
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25
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Pettit AR, Weedon H, Ahern M, Zehntner S, Frazer IH, Slavotinek J, Au V, Smith MD, Thomas R. Association of clinical, radiological and synovial immunopathological responses to anti-rheumatic treatment in rheumatoid arthritis. Rheumatology (Oxford) 2001; 40:1243-55. [PMID: 11709608 DOI: 10.1093/rheumatology/40.11.1243] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES To compare immunohistochemical scoring with clinical scoring and radiology for the assessment of rheumatoid arthritis (RA) disease activity, synovial tissue (ST) biopsied arthroscopically was assessed from 18 patients before and after commencement of disease-modifying anti-rheumatic drug (DMARD) therapy. METHODS Lymphocytes, macrophages, differentiated dendritic cells (DC), vascularity, tumour necrosis factor (TNF) alpha and interleukin-1beta levels were scored. Clinical status was scored using the American College of Rheumatology (ACR) core set and serial radiographs were scored using the Larsen and Sharp methods. Histopathological evidence of activity included infiltration by lymphocytes, DC, macrophages, tissue vascularity, and expression of lining and sublining TNFalpha. These indices co-varied across the set of ST biopsies and were combined as a synovial activity score for each biopsy. RESULTS The change in synovial activity with treatment correlated with the ACR clinical response and with decreased radiological progression by the Larsen score. The ACR response to DMARD therapy, the change in synovial activity score and the slowing of radiological progression were each greatest in patients with high initial synovial vascularity. CONCLUSIONS The data demonstrate an association between clinical, radiological and synovial immunopathological responses to anti-rheumatic treatment in RA. High ST vascularity may predict favourable clinical and radiological responses to treatment.
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Affiliation(s)
- A R Pettit
- Centre for Immunology and Cancer Research, University of Queensland, Princess Alexandra Hospital, Brisbane, Queensland, Australia
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Abstract
The continuing trend towards more aggressive treatment of rheumatoid arthritis (RA) has seen an increasing interest in the early phase of this chronic inflammatory disease. Optimal benefit from present and emerging therapies is limited by our prognostic abilities during this period. The present review attempts to outline first the many methodological issues encountered in studies of early RA, and second the extent to which each major outcome measure can be explained, both by readily available clinical variables and by HLA-DR genotyping. The evidence supporting the clinical usefulness of genotyping is discussed separately. Based on this information, a clinically appropriate approach to the management of early RA and the identification of patients suitable for experimental therapies is suggested.
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Affiliation(s)
- A A Williamson
- Centre for Rheumatic Diseases, The Royal Melbourne Hospital, Victoria, Australia.
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Tak PP, Bresnihan B. The pathogenesis and prevention of joint damage in rheumatoid arthritis: advances from synovial biopsy and tissue analysis. ARTHRITIS AND RHEUMATISM 2000; 43:2619-33. [PMID: 11145019 DOI: 10.1002/1529-0131(200012)43:12<2619::aid-anr1>3.0.co;2-v] [Citation(s) in RCA: 292] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- P P Tak
- Academic Medical Centre, Amsterdam, The Netherlands
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Bresnihan B, Tak PP, Emery P, Klareskog L, Breedveld F. Synovial biopsy in arthritis research: five years of concerted European collaboration. Ann Rheum Dis 2000; 59:506-11. [PMID: 10873958 PMCID: PMC1753183 DOI: 10.1136/ard.59.7.506] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- B Bresnihan
- Department of Rheumatology, St Vincents University Hospital, Dublin 4, Ireland. b.bresnihansvcpc.ie
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