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Abstract
Systemic sclerosis (SSc) is a chronic immune-mediated disease characterized by microangiopathy, immune dysregulation, and progressive fibrosis of the skin and internal organs. Though not fully understood, the pathogenesis of SSc is dominated by microvascular injury, endothelial dysregulation, and immune response that are thought to be associated with fibroblast activation and related fibrogenesis. Among the main clinical subsets, diffuse SSc (dSSc) is a progressive form with rapid and disseminated skin thickening accompanied by internal organ fibrosis and dysfunction. Despite recent advances and multiple randomized clinical trials in early dSSc patients, an effective disease-modifying treatment for progressive skin fibrosis is still missing, and there is a crucial need to identify new targets for therapeutic intervention. Eotaxin-2 (CCL24) is a chemokine secreted by immune cells and epithelial cells, which promotes trafficking of immune cells and activation of pro-fibrotic cells through CCR3 receptor binding. Higher levels of CCL24 and CCR3 were found in the skin and sera of patients with SSc compared with healthy controls; elevated levels of CCL24 and CCR3 were associated with fibrosis and predictive of greater lung function deterioration. Growing evidence supports the potency of a CCL24-blocking antibody as an anti-inflammatory and anti-fibrotic modulating agent in multiple preclinical models that involve liver, skin, and lung inflammation and fibrosis. This review highlights the role of CCL24 in orchestrating immune, vascular, and fibrotic pathways, and the potential of CCL24 inhibition as a novel treatment for SSc.
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Affiliation(s)
| | | | - Alexandra Balbir-Gurman
- Rheumatology Institute, Rambam Health Care Campus, Haifa, Israel
- Ruth and Bruce Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
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Papara C, De Luca DA, Bieber K, Vorobyev A, Ludwig RJ. Morphea: The 2023 update. Front Med (Lausanne) 2023; 10:1108623. [PMID: 36860340 PMCID: PMC9969991 DOI: 10.3389/fmed.2023.1108623] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 01/18/2023] [Indexed: 02/15/2023] Open
Abstract
Morphea, also known as localized scleroderma, is a chronic inflammatory connective tissue disorder with variable clinical presentations, that affects both adults and children. It is characterized by inflammation and fibrosis of the skin and underlying soft tissue, in certain cases even of the surrounding structures such as fascia, muscle, bone and central nervous system. While the etiology is still unknown, many factors may contribute to disease development, including genetic predisposition, vascular dysregulation, TH1/TH2 imbalance with chemokines and cytokines associated with interferon-γ and profibrotic pathways as well as certain environmental factors. Since the disease may progress to permanent cosmetic and functional sequelae, it is crucial to properly assess the disease activity and to initiate promptly the adequate treatment, thus preventing subsequent damage. The mainstay of treatment is based on corticosteroids and methotrexate. These, however, are limited by their toxicity, especially if applied long-term. Furthermore, corticosteroids and methotrexate often do not sufficiently control the disease and/or the frequent relapses of morphea. This review presents the current understanding of morphea by discussing its epidemiology, diagnosis, management and prognosis. In addition, it will describe recent pathogenetic findings, thus proposing potential novel targets for therapeutic development in morphea.
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Affiliation(s)
- Cristian Papara
- Department of Dermatology, University of Lübeck, Lübeck, Germany,Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany,*Correspondence: Cristian Papara, ✉
| | - David A. De Luca
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Katja Bieber
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Artem Vorobyev
- Department of Dermatology, University of Lübeck, Lübeck, Germany,Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Ralf J. Ludwig
- Department of Dermatology, University of Lübeck, Lübeck, Germany,Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
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3
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The Immunogenetics of Morphea and Lichen Sclerosus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1367:155-172. [DOI: 10.1007/978-3-030-92616-8_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Antinozzi C, Sgrò P, Marampon F, Caporossi D, Del Galdo F, Dimauro I, Di Luigi L. Sildenafil Counteracts the In Vitro Activation of CXCL-9, CXCL-10 and CXCL-11/CXCR3 Axis Induced by Reactive Oxygen Species in Scleroderma Fibroblasts. BIOLOGY 2021; 10:491. [PMID: 34073032 PMCID: PMC8229934 DOI: 10.3390/biology10060491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/26/2021] [Accepted: 05/29/2021] [Indexed: 02/06/2023]
Abstract
Oxidative stress plays a key role in systemic sclerosis (SSc) pathogenesis, and an altered redox homeostasis might be responsible for abnormal inflammatory status, fibrosis and tissue damage extension. In this study, we explored the effect of the phosphodiesterase type 5 inhibitor sildenafil in modulating the activation of the CXCL-9, -10, -11/CXCR3 axis, which is fundamental in the perpetuation of inflammation in different autoimmune diseases, in the cell culture of SSc human dermal fibroblasts exposed to a pro-oxidant environment. We observed that sildenafil significantly reduced gene expression and release of CXCL-9, -10 and -11, inhibited the CXCR3 action and suppressed the activation of STAT1-, JNK- and p38MAPK pathways. This in vitro study on dermal fibroblasts supports clinical studies to consider the efficacy of sildenafil in preventing tissue damage and fibrosis in SSc by targeting central biomarkers of disease progression, vascular injuries and fibrosis and reducing the pro-inflammatory activation induced by oxidative stress.
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Affiliation(s)
- Cristina Antinozzi
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (P.S.); (F.M.); (L.D.L.)
| | - Paolo Sgrò
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (P.S.); (F.M.); (L.D.L.)
| | - Francesco Marampon
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (P.S.); (F.M.); (L.D.L.)
- Department of Radiotherapy, Sapienza University of Rome, 00185 Rome, Italy
| | - Daniela Caporossi
- Unit of Biology and Genetic, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (D.C.); (I.D.)
| | - Francesco Del Galdo
- Leeds Institue of Rheumatic and Musculoskeletal Medicine and Diseases and NIHR Biomedical Research Centre, University of Leeds, Leeds LS2 9JT, UK;
| | - Ivan Dimauro
- Unit of Biology and Genetic, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (D.C.); (I.D.)
| | - Luigi Di Luigi
- Unit of Endocrinology, Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (P.S.); (F.M.); (L.D.L.)
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Kim Y, Oh Y, Lee H, Yang B, Choi CH, Jeong H, Kim H, An W. Prediction of the therapeutic mechanism responsible for the effects of Sophora japonica flower buds on contact dermatitis by network-based pharmacological analysis. JOURNAL OF ETHNOPHARMACOLOGY 2021; 271:113843. [PMID: 33493588 DOI: 10.1016/j.jep.2021.113843] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/16/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The flower buds of Sophora japonica L. are a major traditional medicine in China, Japan, and Korea and are used to stop bleeding and 'cool the blood'. Accordingly, they are used to treat bleeding haemorrhoids, hypertension, and pyoderma. In addition, it was recently found that the flower buds of S. japonica (SJ) have cosmetic whitening properties. MATERIALS AND METHODS Compounds in SJ and their targets and related diseases were investigated using the Traditional Chinese Medicine Systems Pharmacology (TCMSP) database and analysis platform. Target gene information was obtained from the UniProt database. Network construction was carried out using Cytoscape 3.72. Contact dermatitis (CD)-related gene searching was performed using the Cytoscape string App. Docking analysis was conducted using AutoDock Vina. Six-week-old Balb/c male mice with DNFB (1-fluoro-2,4-dinitrofluorobenzene)-induced CD were treated with a methanol extract of the flower buds of S. japonica (MESJ), and its effects on skin colour, lesions, and immune cell infiltration, and on histopathological abnormalities such as epidermal hyperplasia were investigated. RESULTS Eleven compounds targeted 13 CD-related genes, that is, serum albumin (ALB), prostaglandin G/H synthase (COX) 2, C-X-C motif chemokine (CXCL) 2, CXCL10, ICAM1, IFN-γ, IL-10, IL-1α, IL-1β, IL-2, IL-6, E-selectin, and TNF. In the murine DNFB model, MESJ significantly suppressed scaling, erythema, and skin thickening as compared with DNFB controls and epithelial hyperplasia and immune cell infiltrations induced by repeated DNFB application. CONCLUSIONS Our animal study showed that the mode of action of MESJ was closely related to the prevention of epithelial hyperplasia and immune cell infiltration. The results obtained demonstrated that the flower buds of S. japonica offer a potential means of treating CD, and suggest that the therapeutic mechanism of CD is explained by relations between 11 major components of SJ, including kaempferol and quercetin, and 13 CD-related genes.
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MESH Headings
- Animals
- Cyclooxygenase 2/chemistry
- Cyclooxygenase 2/metabolism
- Cytokines/metabolism
- Databases, Factual
- Dermatitis, Contact/drug therapy
- Dermatitis, Contact/etiology
- Dermatitis, Contact/metabolism
- Dermatitis, Contact/pathology
- Dinitrofluorobenzene/toxicity
- Disease Models, Animal
- Drugs, Chinese Herbal/chemistry
- Drugs, Chinese Herbal/pharmacology
- Drugs, Chinese Herbal/therapeutic use
- Flowers/chemistry
- Gene Expression Regulation/drug effects
- Hyperplasia/chemically induced
- Hyperplasia/drug therapy
- Hyperplasia/metabolism
- Hyperplasia/pathology
- Inflammation/chemically induced
- Inflammation/drug therapy
- Keratosis/chemically induced
- Keratosis/drug therapy
- Keratosis/metabolism
- Keratosis/pathology
- Male
- Metabolic Networks and Pathways/drug effects
- Mice, Inbred BALB C
- Molecular Docking Simulation
- Sophora/chemistry
- Mice
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Affiliation(s)
- Younsook Kim
- Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Yangsan, Gyeongnam, 50612, South Korea
| | - Yoona Oh
- Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, 50612, South Korea
| | - Hongbum Lee
- Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, 50612, South Korea
| | - Beodeul Yang
- Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, 50612, South Korea
| | - Chan-Hun Choi
- Department of Physiology, College of Korean Medicine, Dongshin University, South Korea
| | - Hyunwoo Jeong
- Department of Pathology, College of Korean Medicine, Dongshin University, Naju, Jeonnam, 58245, South Korea
| | - Hyungwoo Kim
- Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, 50612, South Korea.
| | - Wongun An
- Division of Pharmacology, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, 50612, South Korea
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Carvalheiro T, Horta S, van Roon JAG, Santiago M, Salvador MJ, Trindade H, Radstake TRDJ, da Silva JAP, Paiva A. Increased frequencies of circulating CXCL10-, CXCL8- and CCL4-producing monocytes and Siglec-3-expressing myeloid dendritic cells in systemic sclerosis patients. Inflamm Res 2017; 67:169-177. [PMID: 29127442 PMCID: PMC5765192 DOI: 10.1007/s00011-017-1106-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/13/2017] [Accepted: 10/16/2017] [Indexed: 01/09/2023] Open
Abstract
Objective To investigate the ex vivo pro-inflammatory properties of classical and non-classical monocytes as well as myeloid dendritic cells (mDCs) in systemic sclerosis (SSc) patients. Methods Spontaneous production of CXCL10, CCL4, CXCL8 and IL-6 was intracellularly evaluated in classical, non-classical monocytes and Siglec-3-expressing mDCs from peripheral blood of SSc patients and healthy controls (HC) through flow cytometry. In addition, production of these cytokines was determined upon toll-like receptor (TLR) 4 plus Interferon-γ (IFN-γ) stimulation. Results The frequency of non-classical monocytes spontaneously producing CXCL10 was increased in both limited (lcSSc) and diffuse cutaneous (dcSSC) subsets of SSc patients and CCL4 was augmented in dcSSc patients. The proportion of CCL4-producing mDCs was also elevated in dcSSc patients and the percentage of mDCS producing CXCL10 only in lcSSc patients. Upon stimulation, the frequency of non-classical monocytes expressing CXCL8 was increased in both patient groups and mDCs expressing CXCL8 only in lcSSc. Moreover, these parameters in unsupervised clustering analysis identify a subset of patients which are characterized by lung fibrosis and reduced pulmonary function. Conclusions These data point towards a role of activated non-classical monocytes and mDCs producing enhanced levels of proinflammatory cytokines in SSc, potentially contributing to lung fibrosis. Electronic supplementary material The online version of this article (10.1007/s00011-017-1106-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tiago Carvalheiro
- Blood and Transplantation Center of Coimbra, Portuguese Institute of Blood and Transplantation, Coimbra, Portugal.,Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.,Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sara Horta
- Blood and Transplantation Center of Coimbra, Portuguese Institute of Blood and Transplantation, Coimbra, Portugal.,Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Joel A G van Roon
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.,Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Mariana Santiago
- Department of Rheumatology, Coimbra University Hospital Center, Coimbra, Portugal
| | - Maria J Salvador
- Department of Rheumatology, Coimbra University Hospital Center, Coimbra, Portugal
| | - Hélder Trindade
- Blood and Transplantation Center of Coimbra, Portuguese Institute of Blood and Transplantation, Coimbra, Portugal
| | - Timothy R D J Radstake
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.,Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - José A P da Silva
- Department of Rheumatology, Coimbra University Hospital Center, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Artur Paiva
- Blood and Transplantation Center of Coimbra, Portuguese Institute of Blood and Transplantation, Coimbra, Portugal. .,Flow Cytometry Unit, Clinical Pathology Service, Coimbra University Hospital Center, Praceta Prof. Mota Pinto, Ed. S. Jerónimo, 3° piso, 30001-301, Coimbra, Portugal.
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7
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Knobler R, Moinzadeh P, Hunzelmann N, Kreuter A, Cozzio A, Mouthon L, Cutolo M, Rongioletti F, Denton CP, Rudnicka L, Frasin LA, Smith V, Gabrielli A, Aberer E, Bagot M, Bali G, Bouaziz J, Braae Olesen A, Foeldvari I, Frances C, Jalili A, Just U, Kähäri V, Kárpáti S, Kofoed K, Krasowska D, Olszewska M, Orteu C, Panelius J, Parodi A, Petit A, Quaglino P, Ranki A, Sanchez Schmidt JM, Seneschal J, Skrok A, Sticherling M, Sunderkötter C, Taieb A, Tanew A, Wolf P, Worm M, Wutte NJ, Krieg T. European Dermatology Forum S1-guideline on the diagnosis and treatment of sclerosing diseases of the skin, Part 1: localized scleroderma, systemic sclerosis and overlap syndromes. J Eur Acad Dermatol Venereol 2017; 31:1401-1424. [PMID: 28792092 DOI: 10.1111/jdv.14458] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/26/2017] [Indexed: 12/13/2022]
Abstract
The term 'sclerosing diseases of the skin' comprises specific dermatological entities, which have fibrotic changes of the skin in common. These diseases mostly manifest in different clinical subtypes according to cutaneous and extracutaneous involvement and can sometimes be difficult to distinguish from each other. The present guideline focuses on characteristic clinical and histopathological features, diagnostic scores and the serum autoantibodies most useful for differential diagnosis. In addition, current strategies in the first- and advanced-line therapy of sclerosing skin diseases are addressed in detail. Part 1 of this guideline provides clinicians with an overview of the diagnosis and treatment of localized scleroderma (morphea), and systemic sclerosis including overlap syndromes of systemic sclerosis with diseases of the rheumatological spectrum.
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Affiliation(s)
- R Knobler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - P Moinzadeh
- Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany
| | - N Hunzelmann
- Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany
| | - A Kreuter
- Department of Dermatology, Venereology and Allergology, HELIOS St. Elisabeth Klinik Oberhausen, University Witten-Herdecke, Oberhausen, Germany
| | - A Cozzio
- Department of Dermatology, Venereology and Allergology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - L Mouthon
- Service de Médecine Interne, Centre de référence maladies rares: vascularites et sclérodermie systémique, Hôpital Cochin, Assistance Publique Hôpitaux de Paris, Paris, France
| | - M Cutolo
- Research Laboratories and Academic Division of Clinical Rheumatology, IRCCS San Martino, University Medical School of Genoa, Genoa, Italy
| | - F Rongioletti
- Dermatology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - C P Denton
- Division of Medicine, Centre for Rheumatology, University College London, London, UK
| | - L Rudnicka
- Department of Dermatology, Medical University of Warsaw, Warsaw, Poland
| | - L A Frasin
- Dermatology Unit, Hospital of Lecco, Lecco, Italy
| | - V Smith
- Department of Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - A Gabrielli
- Department of Clinical and Molecular Science, Università Politecnica delle Marche, Ancona, Italy
| | - E Aberer
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - M Bagot
- Department of Dermatology, Hôpital Saint-Louis, Hôpitaux Universitaires, Paris, France
| | - G Bali
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - J Bouaziz
- Department of Dermatology, Hôpital Saint-Louis, Hôpitaux Universitaires, Paris, France
| | - A Braae Olesen
- Department of Dermatology, University Hospital of Aarhus, Aarhus, Denmark
| | - I Foeldvari
- Hamburg Centre for Pediatric and Adolescent Rheumatology, Schön Klinik Hamburg Eilbek, Hamburg, Germany
| | - C Frances
- Department of Dermatology and Allergology, Hôpital Tenon, Assistance Publique Hôpitaux de Paris, Université Pierre et Marie Curie, Paris, France
| | - A Jalili
- Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - U Just
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - V Kähäri
- Department of Dermatology and Venereology, Turku University Hospital and University of Turku, Turku, Finland
| | - S Kárpáti
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - K Kofoed
- Department of Dermato-Allergology, Herlev and Gentofte University Hospital, Copenhagen, Denmark
| | - D Krasowska
- Department of Dermatology, Venereology and Pediatric Dermatology, Medical University of Lublin, Lublin, Poland
| | - M Olszewska
- Department of Dermatology, Medical University of Warsaw, Warsaw, Poland
| | - C Orteu
- Department of Dermatology, Connective Tissue Diseases Service, Royal Free Hospital, London, UK
| | - J Panelius
- Department of Dermatology, Allergology and Venereology, University of Helsinki, and Skin and Allergy Hospital, Helsinki University Central Hospital, Helsinki, Finland
| | - A Parodi
- Department of Dermatology, IRCCS San Martino, University Medical School of Genoa, Genoa, Italy
| | - A Petit
- Department of Dermatology, Hôpital Saint-Louis, Hôpitaux Universitaires, Paris, France
| | - P Quaglino
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - A Ranki
- Department of Dermatology, Allergology and Venereology, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - J M Sanchez Schmidt
- Department of Dermatology, Hospital del Mar-Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - J Seneschal
- Department of Dermatology and Pediatric Dermatology, National Centre for Rare Skin Disorders, Hôpital Saint-Andre, University of Bordeaux, Bordeaux, France
| | - A Skrok
- Department of Dermatology, Medical University of Warsaw, Warsaw, Poland
| | - M Sticherling
- Department of Dermatology, University Hospital of Erlangen, Erlangen, Germany
| | - C Sunderkötter
- Department of Dermatology and Venereology, University Hospital Halle, Halle (Saale), Germany
| | - A Taieb
- Department of Dermatology and Pediatric Dermatology, National Centre for Rare Skin Disorders, Hôpital Saint-Andre, University of Bordeaux, Bordeaux, France
| | - A Tanew
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - P Wolf
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - M Worm
- Department of Dermatology, Venereology and Allergology, University Hospital Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - N J Wutte
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - T Krieg
- Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany
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Almanzar G, Klein M, Schmalzing M, Hilligardt D, El Hajj N, Kneitz H, Wild V, Rosenwald A, Benoit S, Hamm H, Tony HP, Haaf T, Goebeler M, Prelog M. Disease Manifestation and Inflammatory Activity as Modulators of Th17/Treg Balance and RORC/FoxP3 Methylation in Systemic Sclerosis. Int Arch Allergy Immunol 2016; 171:141-154. [DOI: 10.1159/000450949] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 09/20/2016] [Indexed: 11/19/2022] Open
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Abstract
Localized scleroderma (LoS) comprises a heterogeneous spectrum of fibrotic diseases that primarily affect the skin with inflammation and skin thickening. The extent of skin involvement and manifestation at extra-cutaneous structures characterizes the specific subset. Fat tissue, fascia, and sometimes muscle, and bones might be involved, and in rare cases the central nervous or ocular system. A worldwide accepted classification system for LoS is still lacking. The latest guidelines have proposed a distinction of limited, generalized, linear, deep, and mixed types. The exact pathophysiology of LoS is not fully understood yet, but it is thought that an externally triggered release of pro-inflammatory cytokines leads to a dysregulation of the connective tissue metabolism. LoS is diagnosed according to typical clinical features. Further diagnostic procedures are helpful to characterize the subtype and to define the extent of inflammation and fibrosis. Due to the heterogeneity of LoS, therapeutic strategies should always be selected depending on the respective subtype. The stage of tissue inflammation and sclerosis has to be considered. Treatment options such as topical corticosteroids, calcipotriol, and calcineurin inhibitors as well as phototherapy are well established. In subsets with severe wide-spread skin manifestation and/or extra-cutaneous involvement, methotrexate monotherapy or a combination of methotrexate and systemic corticosteroids need to be considered. Physical treatment should always be added to the topical and systemic treatment to prevent significant disabilities due to LoS. This article provides an updated review on the epidemiology, pathophysiology, clinical classification and treatment options for patients suffering from LoS.
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Ohashi T, Yamamoto T. Antifibrotic effect of lysophosphatidic acid receptors LPA1and LPA3antagonist on experimental murine scleroderma induced by bleomycin. Exp Dermatol 2015; 24:698-702. [DOI: 10.1111/exd.12752] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Takenobu Ohashi
- Department of Dermatology; Fukushima Medical University; Fukushima Japan
| | - Toshiyuki Yamamoto
- Department of Dermatology; Fukushima Medical University; Fukushima Japan
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11
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Terao M, Yang L, Matsumura S, Yutani M, Murota H, Katayama I. A vitamin D analog inhibits Th2 cytokine- and TGFβ -induced periostin production in fibroblasts: a potential role for vitamin D in skin sclerosis. DERMATO-ENDOCRINOLOGY 2015; 7:e1010983. [PMID: 26413189 PMCID: PMC4579972 DOI: 10.1080/19381980.2015.1010983] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 01/09/2015] [Accepted: 01/19/2015] [Indexed: 02/05/2023]
Abstract
Scleroderma is an autoimmune disease characterized by extracellular matrix deposition and inflammation. Topical vitamin D analogs have been reported as effective treatments for scleroderma. We previously reported that a matricellular protein, periostin (POSTN), contributes to pathogenesis of scleroderma as POSTN knockout mice were resistant to bleomycin (BLM)-induced scleroderma. We investigated whether a vitamin D analog affects the expression of POSTN in dermal fibroblasts and in a BLM-induced scleroderma model. The vitamin D analog, maxacalcitol (22-oxacalcitriol [OCT]), was applied to dermal fibroblasts and POSTN expression was measured. The effect of OCT on Th2 cytokine- and TGFβ-induced POTSN and Collagen 1 α 1 (Col1A1) expression was also assessed. In vivo, OCT was administered to BLM-induced scleroderma model and outcomes were determined by dermal thickness, collagen density and POSTN expression. Treatment with OCT significantly decreased POSTN expression in dermal fibroblasts. Th2 cytokine- and TGFβ-induced expression of POSTN and Col1A1 was also suppressed by OCT. In vivo, OCT administration decreased the density of collagen bundles and POSTN expression in a BLM-induced scleroderma model. In addition to the previously reported immunosuppressive effect, the vitamin D analog OCT might be effective to treat scleroderma, in part through inhibition of Th2 cytokine- and TGFβ-induced POSTN expression.
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Affiliation(s)
- Mika Terao
- Department of Dermatology; Graduate School of Medicine; Osaka University ; Suita, Osaka, Japan
| | - Lingli Yang
- Department of Dermatology; Graduate School of Medicine; Osaka University ; Suita, Osaka, Japan
| | - Sayaka Matsumura
- Department of Dermatology; Graduate School of Medicine; Osaka University ; Suita, Osaka, Japan
| | - Mizuki Yutani
- Department of Dermatology; Graduate School of Medicine; Osaka University ; Suita, Osaka, Japan
| | - Hiroyuki Murota
- Department of Dermatology; Graduate School of Medicine; Osaka University ; Suita, Osaka, Japan
| | - Ichiro Katayama
- Department of Dermatology; Graduate School of Medicine; Osaka University ; Suita, Osaka, Japan
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12
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Cellular and molecular mechanisms in the pathophysiology of systemic sclerosis. ACTA ACUST UNITED AC 2015; 63:61-8. [DOI: 10.1016/j.patbio.2015.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 03/06/2015] [Indexed: 12/18/2022]
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13
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Pickert AJ, Carpentieri D, Price H, Hansen RC. Early morphea mimicking acquired port-wine stain. Pediatr Dermatol 2014; 31:591-4. [PMID: 23627630 DOI: 10.1111/pde.12116] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the case of a 2.5-year-old girl with linear morphea initially diagnosed as an acquired port-wine stain (PWS). She underwent three treatments to the right face using the pulsed dye laser (PDL) before sclerotic changes were observed and the correct diagnosis was confirmed with histopathology. Treatment using the PDL reduced the skin erythema but did not prevent subsequent sclerosis. The sclerosis became most prominent superior to the patient's right ear in an area not treated using the laser. A review of the English-language medical literature identified no cases of morphea triggered using a PDL, but there were several reports of early morphea misdiagnosed as an acquired PWS. Briefly, we review those cases, as well as morphea subtypes, and comment on how the pathophysiology of morphea may lend itself to an early underrecognized inflammatory presentation, delaying diagnosis.
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Fett N. Scleroderma: Nomenclature, etiology, pathogenesis, prognosis, and treatments: Facts and controversies. Clin Dermatol 2013; 31:432-437. [DOI: 10.1016/j.clindermatol.2013.01.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Abstract
Localized scleroderma (also called morphea) is a term encompassing a spectrum of sclerotic autoimmune diseases that primarily affect the skin, but also might involve underlying structures such as the fat, fascia, muscle, and bones. Its exact pathogenesis is still unknown, but several trigger factors in genetically predisposed individuals might initially lead to an immunologically triggered release of pro-inflammatory cytokines, resulting in a profound dysregulation of the connective tissue metabolism and ultimately to induction of fibrosis. To date, there are no specific serological markers available for localized scleroderma. Within the last years, several validated clinical scores have been introduced as potential outcome measures for the disease. Given the rarity of localized scleroderma, only few evidence-based therapeutical treatment options exist. So far, the most robust data is available for ultraviolet A1 phototherapy in disease that is restricted to the skin, and methotrexate alone or in combination with systemic corticosteroids in more severe disease that additionally affects extracutaneous structures. This practical review summarizes relevant information on the epidemiology, pathogenesis, clinical subtypes and classifications, differential diagnoses, clinical scores and outcome measures, and current treatment strategies of localized scleroderma.
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Affiliation(s)
- Alexander Kreuter
- Department of Dermatology, Venerology and Allergology, Ruhr-University Bochum, Bochum, Germany.
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16
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Nakamura-Wakatsuki T, Oyama N, Yamamoto T. Local injection of latency-associated peptide, a linker propeptide specific for active form of transforming growth factor-beta1, inhibits dermal sclerosis in bleomycin-induced murine scleroderma. Exp Dermatol 2011; 21:189-94. [DOI: 10.1111/j.1600-0625.2011.01419.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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17
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Significantly increased CCL5/RANTES and CCR7 mRNA levels in localized scleroderma. ACTA ACUST UNITED AC 2011; 170:4-6. [DOI: 10.1016/j.regpep.2011.05.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 05/10/2011] [Indexed: 02/06/2023]
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18
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Rabquer BJ, Tsou PS, Hou Y, Thirunavukkarasu E, Haines GK, Impens AJ, Phillips K, Kahaleh B, Seibold JR, Koch AE. Dysregulated expression of MIG/CXCL9, IP-10/CXCL10 and CXCL16 and their receptors in systemic sclerosis. Arthritis Res Ther 2011; 13:R18. [PMID: 21303517 PMCID: PMC3241362 DOI: 10.1186/ar3242] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 01/10/2011] [Accepted: 02/08/2011] [Indexed: 11/20/2022] Open
Abstract
Introduction Systemic sclerosis (SSc) is characterized by fibrosis and microvascular abnormalities including dysregulated angiogenesis. Chemokines, in addition to their chemoattractant properties, have the ability to modulate angiogenesis. Chemokines lacking the enzyme-linked receptor (ELR) motif, such as monokine induced by interferon-γ (IFN-γ) (MIG/CXCL9) and IFN-inducible protein 10 (IP-10/CXCL10), inhibit angiogenesis by binding CXCR3. In addition, CXCL16 promotes angiogenesis by binding its unique receptor CXCR6. In this study, we determined the expression of these chemokines and receptors in SSc skin and serum. Methods Immunohistology and enzyme-linked immunosorbent assays (ELISAs) were used to determine chemokine and chemokine receptor expression in the skin and serum, respectively, of SSc and normal patients. Endothelial cells (ECs) were isolated from SSc skin biopsies and chemokine and chemokine receptor expression was determined by quantitative PCR and immunofluorescence staining. Results Antiangiogenic IP-10/CXCL10 and MIG/CXCL9 were elevated in SSc serum and highly expressed in SSc skin. However, CXCR3, the receptor for these chemokines, was decreased on ECs in SSc vs. normal skin. CXCL16 was elevated in SSc serum and increased in SSc patients with early disease, pulmonary arterial hypertension, and those that died during the 36 months of the study. In addition, its receptor CXCR6 was overexpressed on ECs in SSc skin. At the mRNA and protein levels, CXCR3 was decreased while CXCR6 was increased on SSc ECs vs. human microvascular endothelial cells (HMVECs). Conclusions These results show that while the expression of MIG/CXCL9 and IP-10/CXCL10 are elevated in SSc serum, the expression of CXCR3 is downregulated on SSc dermal ECs. In contrast, CXCL16 and CXCR6 are elevated in SSc serum and on SSc dermal ECs, respectively. In all, these findings suggest angiogenic chemokine receptor expression is likely regulated in an effort to promote angiogenesis in SSc skin.
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Affiliation(s)
- Bradley J Rabquer
- Department of Internal Medicine, University of Michigan Medical School, 109 Zina Pitcher Dr., Ann Arbor, MI 48109, USA.
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Fett N, Werth VP. Update on morphea. J Am Acad Dermatol 2011; 64:217-28; quiz 229-30. [PMID: 21238823 DOI: 10.1016/j.jaad.2010.05.045] [Citation(s) in RCA: 228] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 05/17/2010] [Accepted: 05/25/2010] [Indexed: 01/26/2023]
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20
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Liao WT, Yu HS, Arbiser JL, Hong CH, Govindarajan B, Chai CY, Shan WJ, Lin YF, Chen GS, Lee CH. Enhanced MCP-1 release by keloid CD14+ cells augments fibroblast proliferation: role of MCP-1 and Akt pathway in keloids. Exp Dermatol 2011; 19:e142-50. [PMID: 20100200 DOI: 10.1111/j.1600-0625.2009.01021.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Keloids are fibrous overgrowth induced by cutaneous injury. The pathogenesis of keloids is poorly understood, and no convincing animal model exists. Current hypotheses of the pathogenesis classify keloids as an entity of aberrant fibrosis. Hyperactivation of the MCP-1/CCR2 axis reportedly causes fibrosis in liver cirrhosis, atherosclerosis and lung fibrosis. Circulating CD14+ monocytes are precursors of circulating fibrocytes and contribute to fibrogenesis by a MCP-1/CCR2-dependent loop. As there is an increase in monocyte lineages in keloids, the aim of this study is to determine whether peripheral CD14+ monocytes in keloid patients trigger fibroblast proliferation through MCP-1. Expressions of MCP-1 and its receptor CCR2 in keloid lesions were measured by immunohistochemistry and real-time PCR. The results revealed an increase in MCP-1 and CCR2 in the keloid tissues. Co-culture of keloid CD14+ cells and normal fibroblasts enhanced fibroblast proliferation and a parallel increase in extracellular MCP-1. We further found that MCP-1 modest enhanced fibroblast proliferation via Akt activation. Blockade of either MCP-1 or Akt signaling suppressed the mediation of fibroblast proliferation by CD14+ cells from patients. These results demonstrated that enhanced MCP-1 release by keloid CD14+ cells augments fibroblast proliferation via Akt pathway in keloids. We concluded that enhanced MCP-1 release by keloid CD14+ cells augments fibroblast proliferation, which might initiate keloid development.
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Affiliation(s)
- Wei-Ting Liao
- Graduate Institute of Medicine, Kaohsiung Medical University College of Medicine, Kaohsiung, Taiwan
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21
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Pathogenesis of systemic sclerosis. Rheumatology (Oxford) 2011. [DOI: 10.1016/b978-0-323-06551-1.00139-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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22
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Yamamoto T. Autoimmune mechanisms of scleroderma and a role of oxidative stress. SELF NONSELF 2011; 2:4-10. [PMID: 21776329 DOI: 10.4161/self.2.1.14058] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Accepted: 10/31/2010] [Indexed: 11/19/2022]
Abstract
Scleroderma is a fibrotic condition characterized by immunological abnormalities, vascular injury and increased accumulation of extracellular matrix proteins in the skin. Although the etiology of scleroderma has not yet been fully elucidated, a growing body of evidence suggests that extracellular matrix overproduction by activated fibroblasts results from complex interactions among endothelial cells, lymphocytes, macrophages and fibroblasts via a number of mediators, such as cytokines, chemokines and growth factors. Recent investigations have further suggested that reactive oxygen species (ROS) are involved and play a role of autoimmunology in scleroderma. In this review, current findings on the autoimmune mechanisms in the pathophysiology of scleroderma are described.
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Affiliation(s)
- Toshiyuki Yamamoto
- Department of Dermatology; Fukushima Medical University; Fukushima, Japan
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Kajii M, Suzuki C, Kashihara J, Kobayashi F, Kubo Y, Miyamoto H, Yuuki T, Yamamoto T, Nakae T. Prevention of excessive collagen accumulation by human intravenous immunoglobulin treatment in a murine model of bleomycin-induced scleroderma. Clin Exp Immunol 2010; 163:235-41. [PMID: 21091669 DOI: 10.1111/j.1365-2249.2010.04295.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Systemic sclerosis (SSc) is an autoimmune disease characterized by fibrotic changes in skin and other organs involving excessive collagen deposition. Here we investigated the effect of intravenous immunoglobulin (IVIG) on fibrosis in a murine model of bleomycin (BLM)-induced scleroderma. Scleroderma was induced in C3H/He J mice by subcutaneous BLM injections daily for 35 days. The collagen content in skin samples from the BLM-injected group (6·30 ± 0·11 mg/g tissue) was significantly higher than the PBS group (5·80 ± 0·10 mg/g tissue), and corresponded with dermal thickening at the injection site. In contrast, mice treated with IVIG for 5 consecutive days after initiating BLM injection showed lesser collagen content significantly (IVIG group, 5·61 ± 0·09 mg/g tissue; BLM vs. IVIG). In order to investigate the cellular and protein characteristics in the early stage of the model, the skin samples were obtained 7 days after the onset of experiment. Macrophage infiltration to the dermis, monocyte chemoattractant protein (MCP-1)-positive cells, and increased TGF-β1 mRNA expression were also observed in the BLM group. IVIG inhibited these early fibrogenic changes; MCP-1 expression was significantly lesser for the IVIG group (1·52 ± 0·19 pg/mg tissue) than for the BLM group (2·49 ± 0·26 pg/mg tissue). In contrast, TGF-β1 mRNA expression was significantly inhibited by IVIG. These results suggest that IVIG treatment may inhibit macrophage recruitment to fibrotic sites by down regulating MCP-1 and TGF-β production, and thus could be a potential drug for managing fibrotic disorders such as SSc.
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Affiliation(s)
- M Kajii
- Benesis Corporation, Osaka, Japan.
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Chizzolini C, Brembilla NC, Montanari E, Truchetet ME. Fibrosis and immune dysregulation in systemic sclerosis. Autoimmun Rev 2010; 10:276-81. [PMID: 20863906 DOI: 10.1016/j.autrev.2010.09.016] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Autoimmune and inflammatory phenomena are characteristically present in systemic sclerosis (SSc) and impact on dysregulated fibroblast extracellular matrix deposition, hallmark of the disease in conjunction with fibroproliferative vasculopathy. Oligoclonal T helper 2-like cells are present in the skin and peripheral blood in early diffuse disease. Type 2 cytokines synergize with profibrotic cytokines including transforming growth factor beta, favoring collagen deposition and metalloproteinase inhibition by fibroblasts. Furthermore, chemokine with pro-fibrotic and pro-angiogenic properties are preferentially produced by fibroblasts under the influence of Th2-like cells. The profibrotic monocyte chemotactic protein 1 is also produced by fibroblasts, partially in response to Toll-like receptor 4 (TLR4) recognition, when autoantibodies (autoAb) bind to fibroblast surface. In addition, immune-complex formed by autoAb and ubiquitous antigens including topoisomerase-1 favor the production of interferon-alpha (IFN-α) possibly by interacting with intravesicular TLRs. Consistent with this findings, unbiased gene screening has revealed that SSc peripheral blood cells express genes induced by IFN-α, a characteristic shared with systemic lupus erythematosus and other autoimmune disorders. These findings highlight the complex relationship between adaptive and acquired immune responses, which may participate to the pathogenesis of SSc in manners until now unsuspected, which may help in identifying novel therapeutic targets.
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Affiliation(s)
- Carlo Chizzolini
- Immunology and Allergy, University Hospital and School of Medicine, 1211 Geneva 14, Switzerland.
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Fineschi S, Goffin L, Rezzonico R, Cozzi F, Dayer JM, Meroni PL, Chizzolini C. Antifibroblast antibodies in systemic sclerosis induce fibroblasts to produce profibrotic chemokines, with partial exploitation of toll-like receptor 4. ACTA ACUST UNITED AC 2009; 58:3913-23. [PMID: 19035500 DOI: 10.1002/art.24049] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Previous studies have revealed the presence of IgG antifibroblast antibodies (AFAs) capable of binding to the surface of fibroblasts in systemic sclerosis (SSc) sera. Since chemokines may directly or indirectly affect the development of fibrosis, this study was undertaken to investigate the production of chemokines induced by AFAs in fibroblasts, and to characterize the signaling pathways and surface molecules involved. METHODS AFA-positive and AFA-negative IgG were tested on fibroblasts. Chemokine messenger RNA expression was screened by microarray and quantitative reverse transcription-polymerase chain reaction. Production of CCL2, CXCL8, and CXCL10 proteins was assessed by enzyme-linked immunosorbent assay. Pharmacologic inhibitors were used to study signal transduction, with results assessed by Western blotting and immunofluorescence analysis. Fibroblasts with defective expression of Toll-like receptors (TLRs) and anti-TLR monoclonal antibodies (mAb) were used to assess AFA specificity. RESULTS In human fibroblasts, AFA-positive IgG induced the preferential transcription of chemokines with profibrotic and proangiogenic potential, including, but not exclusively, CCL2, CXCL1, CXCL8, CKLF, and ECGF1, which were distinctly different from those induced by interferon-gamma. Levels of CCL2 and CXCL8 proteins were increased in AFA-stimulated fibroblast culture supernatants. AFA binding to fibroblasts resulted in concomitant activation of ERK-1/2, c-Jun, and NF-kappaB. CCL2 production was sensitive to inhibition of both proteasome and JNK, while CXCL8 production was sensitive only to inhibition of proteasome. AFAs failed to up-regulate CCL2 expression in TLR-4-deficient fibroblasts but not in TLR-6- or TLR-2-deficient fibroblasts. Moreover, anti-TLR-4 mAb, but not anti-TLR-2 mAb, partially inhibited the production of CCL2 induced by AFAs in human fibroblasts. CONCLUSION Autoantibodies that bind to the surface of fibroblasts may contribute to the pathogenesis of SSc by up-regulating the fibroblast production of profibrotic and proangiogenic chemokines, in a proteasome- and TLR-4-dependent manner.
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Affiliation(s)
- Serena Fineschi
- University Hospital and School of Medicine, Geneva, Switzerland
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T cells, B cells, and polarized immune response in the pathogenesis of fibrosis and systemic sclerosis. Curr Opin Rheumatol 2009; 20:707-12. [PMID: 18946333 DOI: 10.1097/bor.0b013e32830c45ae] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW A better comprehension of the interactions between cells of the adaptive immune system with fibroblasts and endothelial cells is required to understand abnormal extracellular matrix deposition, development of pathologic fibrosis, and vasculopathy. RECENT FINDINGS Skin T cells with high IL-4 production potential and peripheral blood T cells preferentially expressing chemokine receptors associated with Th2 functions are found in individuals with active systemic sclerosis. Animal models indicate that Th2 cells and IL-13 can induce muscular hypertrophy in pulmonary arterial vasculature. In bleomycin-induced fibrosis, B cells produce fibrogenic cytokines upon interaction of an endogenous ligand (hyaluronan) with toll-like receptor-4. In the sclerodermatous graft versus host model, the lack of tumor necrosis factor-production by CD4+ T cells is permissive for fibrosis development. Dermal fibrosis and capillary loss typical of systemic sclerosis can be reversible after high-dose immunosuppression and hematopoietic stem cell transplantation. SUMMARY Although immunosuppressive strategies to treat patients with systemic sclerosis and allied conditions are largely disappointing, thus indicating a permissive rather than causative role of immunoinflammatory events characteristic of the disease, new findings stress that cells of the adaptive immune system play important roles in assisting fibrogenesis and vascular abnormalities. This may help in identifying efficacious strategies aimed at their control.
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Abstract
This article reviews current understanding of the pathophysiology of fibrosis in systemic sclerosis. It highlights recent discoveries, insights, and emerging research, and potential opportunities for the development of targeted antifibrotic therapies.
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Affiliation(s)
- John A Varga
- Division of Rheumatology, Northwestern University Feinberg School of Medicine, McGaw 2300, 240 East Huron Street, Chicago IL 60611-2909, USA.
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Lee EB, Zhao J, Kim JY, Xiong M, Song YW. Evidence of potential interaction of chemokine genes in susceptibility to systemic sclerosis. ACTA ACUST UNITED AC 2007; 56:2443-8. [PMID: 17599774 DOI: 10.1002/art.22742] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To examine genetic polymorphisms in the chemokine pathway, and to assess their interactions in relation to susceptibility to systemic sclerosis (SSc). METHODS To identify the risk of SSc conferred by genetic polymorphisms in the chemokine pathway, 10 single-nucleotide polymorphisms (SNPs) from 8 candidate genes were studied in 99 patients with SSc and 198 age- and sex-matched controls in a Korean population. SNPs were genotyped by polymerase chain reaction-restriction fragment length polymorphism or sequence-specific primer methods. Genetic associations between each SNP and SSc risk, calculated as odds ratios with 95% confidence intervals, were estimated using chi-square tests. Haplotypes for the 2 polymorphisms in the gene CCL5 (RANTES) were constructed, and their associations with SSc were tested. Gene-gene interactions were investigated using a recently described novel method, and the results were confirmed by conditional logistic regression. Adjustment for multiple testing was based on Bonferroni correction. RESULTS There was significant evidence of gene-gene interaction between polymorphisms in the genes CXCL8 (interleukin-8) and CCL5, and both of these were associated with an increased risk of SSc. This SNP-SNP interaction was confirmed by 2 independent statistical methods. The associations remained significant after Bonferroni adjustment for multiple testing. No significant association between each individual SNP or haplotype and the risk of SSc was found. CONCLUSION Crosstalk between the 2 chemokines CXCL8 and CCL5 may contribute to the susceptibility to SSc.
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Affiliation(s)
- Eun Bong Lee
- Seoul National University, Seoul, Republic of Korea
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