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Madahar SS, Gideon A, Abdul-Sater AA. Nod-like receptors in inflammatory arthritis. Biomed J 2024; 47:100655. [PMID: 37598797 PMCID: PMC10825342 DOI: 10.1016/j.bj.2023.100655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 08/22/2023] Open
Abstract
Nod-like receptors (NLRs) are innate immune receptors that play a key role in sensing components from pathogens and from damaged cells or organelles. NLRs form signaling complexes that can lead to activation of transcription factors or effector caspases - by means of inflammasome activation -Inflammatory arthritis (IA) culminating in promoting inflammation. An increasing body of research supports the role of NLRs in driving pathogenesis of IA, a collection of diseases that include rheumatoid arthritis (RA), psoriatic arthritis (PsA), ankylosing spondylitis, and pediatric arthritis. In this review, we briefly discuss the main drivers of IA diseases and dive into the evidence for - and against - various NLRs in driving these diseases. We also review the studies examining the use of NLR and inflammasome inhibitors as potential therapies for IA.
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Affiliation(s)
- Sahib Singh Madahar
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, Ontario, Canada; Department of Biology, York University, Toronto, Ontario, Canada
| | - Alita Gideon
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Ali A Abdul-Sater
- School of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, Ontario, Canada.
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2
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Fragoulis GE, Ntouros PA, Nezos A, Vlachogiannis NI, McInnes IB, Tektonidou MG, Skarlis C, Souliotis VL, Mavragani CP, Sfikakis PP. Type-I interferon pathway and DNA damage accumulation in peripheral blood of patients with psoriatic arthritis. Front Immunol 2023; 14:1274060. [PMID: 38124740 PMCID: PMC10731026 DOI: 10.3389/fimmu.2023.1274060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Objectives The abnormal DNA damage response is associated with upregulation of the type-1 interferon (IFN-I) pathway in certain rheumatic diseases. We investigated whether such aberrant mechanisms operate in psoriatic arthritis (PsA). Methods DNA damage levels were measured by alkaline comet assay in peripheral blood mononuclear cells from 52 PsA patients and age-sex-matched healthy individuals. RNA expression of IFIT1, MX1 and IFI44, which are selectively induced by IFN-I, was quantitated by real-time polymerase chain reaction and their composite normalized expression resulted in IFN-I score calculation. RNA expression of IL1β, IL6, TNF, IL17A and IL23A was also assessed in PsA and control subgroups. Results In PsA, DNA damage accumulation was increased by almost two-fold compared to healthy individuals (olive tail moment arbitrary units, mean ± SD; 9.42 ± 2.71 vs 4.88 ± 1.98, p<0.0001). DNA damage levels significantly correlated with serum C-Reactive-protein and IL6 RNA expression in PBMCs. Despite increased DNA damage, the IFN-I score was strikingly lower in PsA patients compared to controls (-0.49 ± 6.99 vs 4.24 ± 4.26; p<0.0001). No correlation was found between IFN-I pathway downregulation and DNA damage. However, the IFN-I score in a PsA subgroup was lower in those patients with higher IL1β expression, as well as in those with higher TNF/IL23A PBMCs expression. Conclusion DNA damage in PsA correlates with measures of inflammation but is not associated with the IFN-I pathway induction. The unexpected IFN-I downregulation, albeit reminiscent to findings in experimental models of spondyloarthritis, may be implicated in PsA pathogenesis and explained by operation of other cytokines.
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Affiliation(s)
- George E. Fragoulis
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Panagiotis A. Ntouros
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Adrianos Nezos
- Department of Physiology, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Nikolaos I. Vlachogiannis
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Iain B. McInnes
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Maria G. Tektonidou
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Charalampos Skarlis
- Department of Physiology, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Vassilis L. Souliotis
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
- Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
| | - Clio P. Mavragani
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
- Department of Physiology, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Petros P. Sfikakis
- Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
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3
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Soomro M, Hum R, Barton A, Bowes J. Genetic Studies Investigating Susceptibility to Psoriatic Arthritis: A Narrative Review. Clin Ther 2023; 45:810-815. [PMID: 37516563 DOI: 10.1016/j.clinthera.2023.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/31/2023]
Abstract
PURPOSE Approximately 30% of patients with psoriasis will develop psoriatic arthritis (PsA), leading to a decreased quality of life for the patient caused by increasing disability and additional health complications. The identification of risk factors for the development of PsA would facilitate the development of risk prediction models in which patients with psoriasis at high risk of developing PsA could be targeted in a stratified medicine approach, enabling early intervention and treatment. PsA is known to have a genetic contribution to susceptibility, and the identification of genetic risk factors that differentiate PsA from cutaneous-only psoriasis is a key area of research. This narrative review summarizes the discovery of genetic risk factors and, with the aid of a primer on risk prediction models, discusses their potential role for the classification of PsA risk and diagnosis. METHODS All relevant research articles were identified through searches of the PubMed database for literature published up until December 2022. Search terms included psoriatic arthritis, genetic susceptibility, genetic association, genome-wide association study, GWAS, prediction, and polygenic risk score. FINDINGS The current literature reveals considerable overlap between the genetic susceptibility loci for PsA and psoriasis. Several PsA-specific genetic risk factors have been reported, and most notably these implicate the HLA-B and IL23R genes. Efforts to include genetic risk factors in prediction models for the development of PsA have reported good discrimination. IMPLICATIONS Key messages emerging from this narrative are as follows: the limited number of PsA-specific susceptibility loci reported to date suggest larger studies are required, facilitated by international collaboration, to achieve the power to detect further genetic factors; the early promising results for genetic-based risk prediction require further validation in independent datasets; and risk prediction models combining clinical and genetic risk factors have yet to be explored.
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Affiliation(s)
- Mehreen Soomro
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Ryan Hum
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Anne Barton
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom; NIHR Manchester Biomedical Research Centre, Central Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - John Bowes
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom; NIHR Manchester Biomedical Research Centre, Central Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom.
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4
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Hüffmeier U, Klima J, Hayatu MD. Genetic underpinnings of the psoriatic spectrum. MED GENET-BERLIN 2023; 35:46-54. [PMID: 38835412 PMCID: PMC10842586 DOI: 10.1515/medgen-2023-2005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
The psoriatic field includes both rare and common subtypes. Common complex forms include psoriasis vulgaris and psoriatic arthritis. In these subtypes, certain HLA alleles remain the most relevant genetic factors, although genome-wide association studies lead to the detection of more than 80 susceptibility loci. They mainly affect innate and adaptive immunity and explain over 28 % of the heritability. Pustular psoriasis comprises a group of rarer subtypes. Using exome sequencing, several disease genes were identified for mainly generalized pustular psoriasis, and an oligogenic inheritance is likely. Treatment studies based on the affected IL-36 pathway indicate a high response rate in this subtype further supporting the pathophysiological relevance of the affected gene products.
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Affiliation(s)
- Ulrike Hüffmeier
- Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Human Genetics Schwabachanlage 10 91054 Erlangen Deutschland
| | - Janine Klima
- Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Human Genetics Schwabachanlage 10 91054 Erlangen Germany
| | - Mohammad Deen Hayatu
- Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Human Genetics Schwabachanlage 10 91054 Erlangen Germany
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Gisondi P, Bellinato F, Maurelli M, Geat D, Zabotti A, McGonagle D, Girolomoni G. Reducing the Risk of Developing Psoriatic Arthritis in Patients with Psoriasis. PSORIASIS (AUCKLAND, N.Z.) 2022; 12:213-220. [PMID: 35975124 PMCID: PMC9375973 DOI: 10.2147/ptt.s323300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 08/04/2022] [Indexed: 01/22/2023]
Abstract
Psoriatic arthritis (PsA) is a heterogeneous chronic inflammatory arthritis associated with psoriasis, which may manifest with different domains such as dactylitis, enthesitis, synovitis and spondylitis. The estimated prevalence of PsA in patients with psoriasis ranges widely between 6% and 42%. In most cases, PsA is preceded by skin involvement by an average time of 7-8 years. In the complex patho-mechanisms involved in the transition from psoriasis to PsA, the gut and skin have been proposed as the sites of immune activation triggering or contributing to the development of PsA. In such a transition, a subclinical phase has been identified, characterized by enthesopathy where soluble biomarkers and imaging findings but no clinical symptoms are detectable. Recent studies have provided some evidence that timely treated psoriasis may reduce the risk of developing PsA.
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Affiliation(s)
- Paolo Gisondi
- Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy
| | - Francesco Bellinato
- Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy
| | - Martina Maurelli
- Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy
| | - Davide Geat
- Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy
| | - Alen Zabotti
- Rheumatology Clinic, Department of Medical and Biological Sciences, University Hospital ‘Santa Maria della Misericordia’ c/o University of Udine, Udine, Italy
| | - Dennis McGonagle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Giampiero Girolomoni
- Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy
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Schett G, Rahman P, Ritchlin C, McInnes IB, Elewaut D, Scher JU. Psoriatic arthritis from a mechanistic perspective. Nat Rev Rheumatol 2022; 18:311-325. [PMID: 35513599 DOI: 10.1038/s41584-022-00776-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2022] [Indexed: 12/13/2022]
Abstract
Psoriatic arthritis (PsA) is part of a group of closely related clinical phenotypes ('psoriatic disease') that is defined by shared molecular pathogenesis resulting in excessive, prolonged inflammation in the various tissues affected, such as the skin, the entheses or the joints. Psoriatic disease comprises a set of specific drivers that promote an aberrant immune response and the consequent development of chronic disease that necessitates therapeutic intervention. These drivers include genetic, biomechanical, metabolic and microbial factors that facilitate a robust and continuous mobilization, trafficking and homing of immune cells into the target tissues. The role of genetic variants involved in the immune response, the contribution of mechanical factors triggering an exaggerated inflammatory response (mechanoinflammation), the impact of adipose tissue and altered lipid metabolism and the influence of intestinal dysbiosis in the disease process are discussed. Furthermore, the role of key cytokines, such as IL-23, IL-17 and TNF, in orchestrating the various phases of the inflammatory disease process and as therapeutic targets in PsA is reviewed. Finally, the nature and the mechanisms of inflammatory tissue responses inherent to PsA are summarized.
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Affiliation(s)
- Georg Schett
- Department of Medicine 3, Friedrich Alexander University Erlangen-Nuremberg and Universitaets-klinikum Erlangen, Erlangen, Germany. .,Deutsches Zentrum Immuntherapie DZI, Friedrich Alexander University Erlangen-Nuremberg and Universitaets-klinikum Erlangen, Erlangen, Germany.
| | - Proton Rahman
- St. Clare's Mercy Hospital, St. John's, Newfoundland, Canada
| | - Christopher Ritchlin
- Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center Rochester, Rochester, NY, USA
| | - Iain B McInnes
- College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Dirk Elewaut
- VIB-UGent Center for Inflammation Research and Ghent University Hospital, Ghent, Belgium
| | - Jose U Scher
- Department of Medicine, Division of Rheumatology, NYU Grossman School of Medicine, New York, NY, USA
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Ciaffi J, Mele G, Mancarella L, Brusi V, Lisi L, Faranda Cordella J, Lubrano E, D'Angelo S, Meliconi R, Ursini F. Prevalence of Type 2 and Type 1 Diabetes in Psoriatic Arthritis: An Italian Study. J Clin Rheumatol 2022; 28:e324-e329. [PMID: 35192591 DOI: 10.1097/rhu.0000000000001706] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Psoriatic arthritis (PsA) is burdened by an increased susceptibility to cardiovascular diseases. Comorbid diabetes may represent one of the key factors contributing to this risk. The aim of our medical records review study was to investigate the prevalence of type 2 diabetes (T2D) and type 1 diabetes (T1D) in an Italian PsA cohort. METHODS The clinical records of all patients consecutively seen at our clinic with a diagnosis of PsA during a 12-month period were reviewed to identify comorbid T2D or T1D. For comparison, a 1:1 age- and sex-matched group of individuals with noninflammatory diseases was recruited. RESULTS The final study cohort comprised 408 patients. The prevalence of T2D was 7.8% (95% confidence interval, 5.6-10.8) in PsA and 4.4% in controls (95% confidence interval, 2.8-6.9; p = 0.04). Two cases (0.49%) of T1D were identified in the PsA cohort, whereas no cases were observed in controls. In a multivariate logistic regression model including age, disease duration, and body mass index (BMI) as covariates, increasing age (odds ratio [OR], 1.079; p = 0.006) and BMI (OR, 1.188; p = 0.011) but not PsA duration predicted being classified as having T2D. In a similar model accounting for age and BMI, average disease activity score including 28 joints and C-reactive protein showed a trend toward significance (OR, 1.639; p = 0.066). CONCLUSIONS In conclusion, our data provide further support to the emerging evidence of an increased risk of T2D in PsA patients. Cardiometabolic comorbidity represents a significant aspect of integrated arthritis management to improve long-term cardiovascular outcomes and to provide a comprehensive treatment.
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Affiliation(s)
- Jacopo Ciaffi
- From the Medicine and Rheumatology Unit, Dipartimento di Patologie Ortopediche Complesse
| | - Giulio Mele
- From the Medicine and Rheumatology Unit, Dipartimento di Patologie Ortopediche Complesse
| | - Luana Mancarella
- From the Medicine and Rheumatology Unit, Dipartimento di Patologie Ortopediche Complesse
| | - Veronica Brusi
- From the Medicine and Rheumatology Unit, Dipartimento di Patologie Ortopediche Complesse
| | - Lucia Lisi
- From the Medicine and Rheumatology Unit, Dipartimento di Patologie Ortopediche Complesse
| | | | - Ennio Lubrano
- Academic Rheumatology Unit, Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise, Campobasso
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Laborde CM, Larzabal L, González-Cantero Á, Castro-Santos P, Díaz-Peña R. Advances of Genomic Medicine in Psoriatic Arthritis. J Pers Med 2022; 12:jpm12010035. [PMID: 35055350 PMCID: PMC8780979 DOI: 10.3390/jpm12010035] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/16/2021] [Accepted: 12/28/2021] [Indexed: 12/13/2022] Open
Abstract
Psoriatic arthritis (PsA) is a common type of inflammatory arthritis found in up to 40% of patients with psoriasis. Although early diagnosis is important for reducing the risk of irreversible structural damage, there are no adequate screening tools for this purpose, and there are no clear markers of predisposition to the disease. Much evidence indicates that PsA disorder is complex and heterogeneous, where genetic and environmental factors converge to trigger inflammatory events and the development of the disease. Nevertheless, the etiologic events that underlie PsA are complex and not completely understood. In this review, we describe the existing data in PsA in order to highlight the need for further research in this disease to progress in the knowledge of its pathobiology and to obtain early diagnosis tools for these patients.
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Affiliation(s)
| | | | - Álvaro González-Cantero
- Department of Dermatology, Hospital Universitario Ramon y Cajal, 28034 Madrid, Spain;
- Faculty of Medicine, Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda, 28223 Pozuelo de Alarcón, 28034 Madrid, Spain
| | - Patricia Castro-Santos
- Immunology, Centro de Investigaciones Biomédicas (CINBIO), Universidad de Vigo, 36310 Vigo, Spain;
| | - Roberto Díaz-Peña
- Faculty of Health Sciences, Universidad Autónoma de Chile, Talca 3460000, Chile
- Correspondence: or ; Tel.: +34-981-955-073
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Gao J, Shen X, Ko R, Huang C, Shen C. Cognitive Process of Psoriasis and Its Comorbidities: From Epidemiology to Genetics. Front Genet 2021; 12:735124. [PMID: 34899832 PMCID: PMC8662384 DOI: 10.3389/fgene.2021.735124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/25/2021] [Indexed: 12/16/2022] Open
Abstract
Psoriasis (PsO) is a chronic inflammatory skin disease that affects approximately 2% of the population all over the world. Comorbidities of PsO have increasingly garnered more interest in the past decades. Compared with the normal population, the incidences of comorbidities are higher among patients with PsO. In the last 20 years, researchers have focused on studying the genetic components of PsO, and genetic associations between PsO and its comorbidities were elucidated. This review provides an in-depth understanding and summarization of the connection between PsO and its comorbidities from the perspectives of epidemiology and genetics. Further understanding of PsO and its comorbidities will promote research on the pathogenesis, drug development, novel therapy methods, and personalized and precision treatment of PsO and its comorbidities.
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Affiliation(s)
- Jing Gao
- Department of Dermatology, the Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Xue Shen
- Department of Dermatology, Chengdu Second People's Hospital, Chengdu, China
| | - Randy Ko
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - Cong Huang
- Department of Dermatology, Peking University Shenzhen Hospital, Shenzhen, China.,Shenzhen Key Laboratory for Translational Medicine of Dermatology, Shenzhen Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen, China
| | - Changbing Shen
- Department of Dermatology, Peking University Shenzhen Hospital, Shenzhen, China.,Shenzhen Key Laboratory for Translational Medicine of Dermatology, Shenzhen Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen, China
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10
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Advanced genomics and clinical phenotypes in psoriatic arthritis. Semin Immunol 2021; 58:101665. [PMID: 36307312 DOI: 10.1016/j.smim.2022.101665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Psoriatic Arthritis (PsA) is a complex polygenic inflammatory disease showing a variable musculoskeletal involvement in patients with skin psoriasis. PsA coexist in 25-40 % of patients with the dermatological manifestations, but PsA may also predate the appearance of psoriasis. Nonetheless, the immunopathogenesis of psoriasis and PsA manifest significant similarities, with a major role of the individual susceptibility in both cases. Genome wide association studies (GWAS) identified several genes/loci associated with the risk to develop PsA, both dependent and independent of psoriasis. The major challenge is thus represented by the need to translate the identification of functional polymorphisms and other genetics findings into biological mechanisms along with the identification of novel putative drug targets. A functional genomics approach aims to increase GWAS power and recent evidence supports the use of a multilayer process, including eQTL, methylome, chromatin conformation analysis and genome editing to discover novel genes that can be affected by disease-associated variants, such as PsA. The available data have considered PsA as a unique homogeneous clinical entity while the clinical experience supports a wide variability of skin and joint manifestations coexisting in diverse patients with different mechanisms underlying the musculoskeletal and dermatological domains. A better discrimination of the patient features is encouraged by the limited data on functional genomics. We provide herein a review of the latest findings on PsA functional genomics highlighting the exciting developments in the field and how these might lead to a better understanding of gene regulation underpinning disease mechanisms and ultimately refine clinical phenotyping.
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11
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Kubanov AA, Karamova AE, Chikin VV, Verbenko DA, Znamenskaya LF, Artamonova OG. Genetic markers for psoriatic arthritis in patients with psoriasis. Part I: non-HLA genes. VESTNIK DERMATOLOGII I VENEROLOGII 2021. [DOI: 10.25208/vdv1260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Psoriatic arthritis often develops in patients with psoriasis and can lead to joint deformity, stiffness, dysfunction, and disability. Psoriatic arthritis is a polygenic disease. and the issue of personalizing the prognosis of its development can only be resolved taking into account the variability of plenty genomic loci associated with the development of the disease. The personification of the prognosis of the disease can be solved taking into account the variability of the set of genomic loci with which its development is associated. The review examines genomic polymorphisms associated with the development of psoriatic arthritis not psoriasis, except of HLA polymorphisms. Genome regions containing polymorphisms, allelic variants of which are associated both with the development of psoriatic arthritis and reducing the likelihood of its occurrence, are described. It has been reported that the predisposition to the development of psoriatic arthritis in patients with psoriasis is determined by genes encoding proteins involved in inflammation and bone metabolism.
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Grivas A, Fragoulis G, Garantziotis P, Banos A, Nikiphorou E, Boumpas D. Unraveling the complexities of psoriatic arthritis by the use of -Omics and their relevance for clinical care. Autoimmun Rev 2021; 20:102949. [PMID: 34509654 DOI: 10.1016/j.autrev.2021.102949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 06/30/2021] [Indexed: 12/30/2022]
Abstract
-Omic technologies represent a novel approach to unravel ill-defined aspects of psoriatic arthritis (PsA). Large-scale information can be acquired from analysis of affected tissues in PsA via high-throughput studies in the domains of genomics, transcriptomics, epigenetics, proteomics and metabolomics. This is a critical overview of the current knowledge of -omics in PsA, with emphasis on the pathophysiological insights of diagnostic and therapeutic relevance, the advent of novel biomarkers and their potential use for precision medicine in PsA.
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Affiliation(s)
- Alexandros Grivas
- National and Kapodistrian University of Athens, Faculty of medicine, Athens, Greece; Inflammation & Autoimmunity Lab, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece.
| | - George Fragoulis
- First Department of Propaedeutic Internal Medicine, National and Kapodistrian University of Athens, "Laiko" General Hospital, Athens, Greece
| | - Panagiotis Garantziotis
- Inflammation & Autoimmunity Lab, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece; Division of Immunology and Rheumatology, Hannover Medical University, 30,625 Hannover, Germany
| | - Aggelos Banos
- Inflammation & Autoimmunity Lab, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
| | - Elena Nikiphorou
- Centre for Rheumatic Diseases, School of Immunology and Microbial Sciences, King's College London, King's Hospital, London, United Kingdom
| | - Dimitrios Boumpas
- National and Kapodistrian University of Athens, Faculty of medicine, Athens, Greece; Inflammation & Autoimmunity Lab, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
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ALrefai A, Dawood A, Shehata W, Elhelbawy M, Elhelbawy N. Evaluation of NLRP3 (rs10754558) and PTPN22 (1858C/T) (rs2476601) Functional Polymorphisms in Psoriasis Susceptibility in Egypt. Appl Clin Genet 2021; 14:331-339. [PMID: 34345180 PMCID: PMC8324977 DOI: 10.2147/tacg.s319065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Psoriasis is a complex autoimmune multifactorial disease induced by interaction of environmental and genetic factors. This research aimed to clarify the association of NLRP3 (rs10754558) and PTPN22 (1858C/T) (rs2476601) polymorphisms with susceptibility to psoriasis. METHODS This case-control study involved 150 patients diagnosed with psoriasis and 100 age- and gender-matched apparently healthy individuals. NLRP3 (rs10754558) polymorphism was done by real time PCR and PTPN22 1858C/T (rs2476601) genotype was identified by tetra-primer amplification refractory mutation system-polymerase chain reaction (PCR) method. RESULTS The genotypes distribution of NLRP3 (rs10754558) were significantly associated with psoriasis (p<0.0001). Whereas for PTPN22 (1858C/T) (rs2476601), no significance was found (p=0.09). NLRP3 (rs10754558) GC genotype revealed a significant association with psoriasis (p<0.0001), mainly among male (p=0.004) patients with mild psoriasis (p=0.001) and affected extremities (p=0.0001). CONCLUSION We can conclude that the NLRP3 (rs10754558) GC genotype may play a role in psoriasis susceptibility among male Egyptian populations with affected extremities. Future studies must evaluate its role in the prevention or the treatment of psoriasis.
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Affiliation(s)
- Abeer ALrefai
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
- Biochemistry Department, Faculty of Medicine, Umm Al-Qura University, Makah City, Saudi Arabia
| | - Ashraf Dawood
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Wafaa Shehata
- Dermatology, Andrology & Sexually Transmitted Diseases (STDs) Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Mohammed Elhelbawy
- Clinical Pathology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Nesreen Elhelbawy
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
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14
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Mulder MLM, van Hal TW, Wenink MH, Koenen HJPM, van den Hoogen FHJ, de Jong EMGJ, van den Reek JMPA, Vriezekolk JE. Clinical, laboratory, and genetic markers for the development or presence of psoriatic arthritis in psoriasis patients: a systematic review. Arthritis Res Ther 2021; 23:168. [PMID: 34127053 PMCID: PMC8201808 DOI: 10.1186/s13075-021-02545-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/21/2021] [Indexed: 12/11/2022] Open
Abstract
Twenty to thirty percent of psoriasis (Pso) patients will develop psoriatic arthritis (PsA). Detection of Pso patients that are (at risk for) developing PsA is essential to prevent structural damage. We conducted a systematic search of five bibliographic databases, up to May 2020. We searched for studies assessing markers (clinical, laboratory, genetic) associated with the development or presence of PsA in Pso patients. Study selection and quality assessment of the included studies was performed, followed by a qualitative best evidence synthesis to determine the level of evidence for a marker and its association with concomitant/developing PsA in Pso. Overall, 259 possible markers were identified in 119 studies that met the inclusion criteria. Laboratory markers related to inflammation and bone metabolism reached a strong level of evidence for the association (not prediction) of PsA in Pso. Only CXCL10 showed strong evidence for a positive predictive value for PsA in Pso. The importance of timely detecting PsA in a Pso population, and finding more (bio)markers contributing to early detection, remains high.
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Affiliation(s)
- Michelle L M Mulder
- Department of Rheumatology, Sint Maartenskliniek, PO box 9011, 6500 GM, Nijmegen, The Netherlands. .,Radboud Institute for Health Sciences (RIHS), Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Tamara W van Hal
- Department of Rheumatology, Sint Maartenskliniek, PO box 9011, 6500 GM, Nijmegen, The Netherlands.,Radboud Institute for Health Sciences (RIHS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mark H Wenink
- Department of Rheumatology, Sint Maartenskliniek, PO box 9011, 6500 GM, Nijmegen, The Netherlands
| | - Hans J P M Koenen
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Elke M G J de Jong
- Radboud Institute for Health Sciences (RIHS), Radboud University Medical Center, Nijmegen, The Netherlands.,Radboud University, Nijmegen, The Netherlands.,Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Juul M P A van den Reek
- Radboud Institute for Health Sciences (RIHS), Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Johanna E Vriezekolk
- Department of Rheumatology, Sint Maartenskliniek, PO box 9011, 6500 GM, Nijmegen, The Netherlands
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15
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16
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O'Rielly DD, Rahman P. Clinical and molecular significance of genetic loci associated with psoriatic arthritis. Best Pract Res Clin Rheumatol 2021; 35:101691. [PMID: 34020887 DOI: 10.1016/j.berh.2021.101691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Psoriatic arthritis (PsA) is caused by a combination of environmental and multiple genetic factors, with clear evidence for a strong genetic basis. The remarkable accumulation of knowledge gained from genetic, pharmacogenetic, and therapeutic response of biologic agents in PsA has fundamentally changed and advanced our understanding of disease pathogenesis and has identified key signalling pathways. However, only one-quarter of the genetic contribution of PsA has been accounted for; and dissecting the genetic contributors of the cutaneous disease from those that would identify joint disease has been challenging. More importantly, the clinical utility of multiple proposed loci is unclear. In this review, we summarize the potential clinical relevance from established genetic associations and provide insight on the proposed molecular pathways that arise from these associations.
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Affiliation(s)
- Darren D O'Rielly
- Faculty of Medicine, Memorial University, Craig L Dobbin Genetics Research Centre, Suite 3M500, 300 Prince Philip Drive, St. John's, NL, A1B3V6, Canada
| | - Proton Rahman
- St. Clare's Mercy Hospital, 154 LeMarchant Rd, St. John's, Newfoundland, A1C5B8, Canada.
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17
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Wu D, Wong P, Lam SHM, Li EK, Qin L, Tam LS, Gu J. The causal effect of interleukin-17 on the risk of psoriatic arthritis: a Mendelian randomization study. Rheumatology (Oxford) 2021; 60:1963-1973. [PMID: 33188428 DOI: 10.1093/rheumatology/keaa629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 07/24/2020] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To determine causal associations between genetically predicted TNF-α, IL-12p70 and IL-17 levels and risk of PsA. METHODS The publicly available summary-level findings from genome-wide association studies (GWAS) was used to identify loci influencing normal physiological concentrations of TNF-α, IL-12p70 and IL-17 (n = 8293) among healthy individuals as exposure and a GWAS for PsA from the UK Biobank (PsA = 900, control = 462 033) as the outcome. A two-sample Mendelian randomization (MR) analysis was performed using the inverse-variance weighted (IVW), weighted median and MR-Egger regression methods. Sensitivity analysis and MR-Egger regression analysis were performed to evaluate the heterogeneity and pleiotropic effects of each variant. RESULTS Single-nucleotide polymorphisms (SNPs) at genome-wide significance from GWASs on TNF-α, IL-12p70 and IL-17 were identified as the instrumental variables. The IVW method indicated a causal association between increased IL-17 level and risk of PsA (β = -0.00186 per allele, s.e. = 0.00043, P = 0.002). Results were consistent in the weighted median method (β = -0.00145 per allele, s.e. = 0.00059, P = 0.014) although the MR-Egger method suggested a non-significant association (β = -0.00133 per allele, s.e. = 0.00087; P = 0.087). Single SNP MR results revealed that the C allele of rs117556572 was robustly associated with risk of PsA (β = 0.00210, s.e. = 0.00069, P = 0.002). However, no evidence for a causal effect was observed between TNF-α, IL-12p70, decreased IL-17 levels and risk of PsA. CONCLUSION Our findings provide preliminary evidence that genetic variants predisposing to higher physiological IL-17 level are associated with decreased risk of PsA.
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Affiliation(s)
- Dongze Wu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Department of Medicine & Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Priscilla Wong
- Department of Medicine & Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Steven H M Lam
- Department of Medicine & Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Edmund K Li
- Department of Medicine & Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Ling Qin
- Bone Quality and Health Centre of the Department of Orthopedics & Traumatology, The Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Lai-Shan Tam
- Department of Medicine & Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Jieruo Gu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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18
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Insights into the pathogenesis of psoriatic arthritis from genetic studies. Semin Immunopathol 2021; 43:221-234. [PMID: 33712923 DOI: 10.1007/s00281-021-00843-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/19/2021] [Indexed: 12/20/2022]
Abstract
Psoriatic arthritis (PsA) is a relatively common inflammatory arthritis, a spondyloarthritis (SpA), that occurs most often in patients with psoriasis, a common immune-mediated inflammatory skin disease. Both psoriasis and PsA are highly heritable. Genetic and recent genomic studies have identified variants associated with psoriasis and PsA, but variants differentiating psoriasis from PsA are few. In this review, we describe recent developments in understanding the genetic burden of PsA, linkage, association and epigenetic studies. Using pathway analysis, we provide further insights into the similarities and differences between PsA and psoriasis, as well as between PsA and other immune-mediated inflammatory diseases, particularly ankylosing spondylitis, another SpA. Environmental factors that may trigger PsA in patients with psoriasis are also reviewed. To further understand the pathogenetic differences between PsA and psoriasis as well as other SpA, larger cohort studies of well-phenotyped subjects with integrated analysis of genomic, epigenomic, transcriptomic, proteomic and metabolomic data using interomic system biology approaches are required.
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19
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Shi C, Rattray M, Barton A, Bowes J, Orozco G. Using functional genomics to advance the understanding of psoriatic arthritis. Rheumatology (Oxford) 2021; 59:3137-3146. [PMID: 32778885 PMCID: PMC7590405 DOI: 10.1093/rheumatology/keaa283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/17/2020] [Accepted: 04/28/2020] [Indexed: 01/03/2023] Open
Abstract
Psoriatic arthritis (PsA) is a complex disease where susceptibility is determined by genetic and environmental risk factors. Clinically, PsA involves inflammation of the joints and the skin, and, if left untreated, results in irreversible joint damage. There is currently no cure and the few treatments available to alleviate symptoms do not work in all patients. Over the past decade, genome-wide association studies (GWAS) have uncovered a large number of disease-associated loci but translating these findings into functional mechanisms and novel targets for therapeutic use is not straightforward. Most variants have been predicted to affect primarily long-range regulatory regions such as enhancers. There is now compelling evidence to support the use of chromatin conformation analysis methods to discover novel genes that can be affected by disease-associated variants. Here, we will review the studies published in the field that have given us a novel understanding of gene regulation in the context of functional genomics and how this relates to the study of PsA and its underlying disease mechanism.
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Affiliation(s)
- Chenfu Shi
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, Centre for Genetics and Genomics Versus Arthritis
| | - Magnus Rattray
- Division of Informatics, Imaging and Data Sciences, Faculty of Biology, Medicine and Health, University of Manchester.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre
| | - Anne Barton
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, Centre for Genetics and Genomics Versus Arthritis.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre.,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - John Bowes
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, Centre for Genetics and Genomics Versus Arthritis.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre
| | - Gisela Orozco
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, Centre for Genetics and Genomics Versus Arthritis.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre.,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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20
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Brown MA, Xu H, Li Z. Genetics and the axial spondyloarthritis spectrum. Rheumatology (Oxford) 2021; 59:iv58-iv66. [PMID: 33053195 PMCID: PMC7566537 DOI: 10.1093/rheumatology/keaa464] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/10/2020] [Indexed: 02/06/2023] Open
Abstract
The axial SpAs (axSpAs) are clearly clinically a heterogeneous set of diseases with markedly varying extra-articular features. These diseases are all highly heritable and have overlapping but differing genetic origins. Shared features include association with HLA class I alleles and genes of the IL-23 pathway, among other things. Significant differences do exist however, both in the genetic loci involved and at specific loci in the individual genetic variants associated with each disease. These similarities and differences are of great interest in regards to disease pathogenesis and treatment development, although individually they are too small in effect to be of prognostic or diagnostic value. Polygenic risk scores, which capture a high proportion of the genetic variation between disorders, have been shown to have clinically useful discriminatory capacity in axSpA. This suggests they have the potential to enable improved disease classification, incorporating basic pathogenic features such as genomics, and ultimately benefitting clinical care. The aim of this article is to review the genetic characteristics of the spectrum of axSpAs and to discuss how this influences our understanding of the disease pathogenesis and the clinical implications of this understanding.
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Affiliation(s)
- Matthew A Brown
- Guy's & St Thomas' NHS Foundation Trust and King's College London NIHR Biomedical Research Centre, London, UK
| | - Huji Xu
- Department of Rheumatology and Immunology, Changzheng Hospital, Second Military Medical University, Shanghai, China.,Peking-Tsinghua Center for Life Sciences, Tsinghua University, Beijing, China.,Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Zhixiu Li
- Translational Genomics Group, Institute of Health and Biomedical Innovation, Queensland University of Technology, Translational Research Institute, Brisbane, QLD, Australia
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21
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Vecellio M, Hake VX, Davidson C, Carena MC, Wordsworth BP, Selmi C. The IL-17/IL-23 Axis and Its Genetic Contribution to Psoriatic Arthritis. Front Immunol 2021; 11:596086. [PMID: 33574815 PMCID: PMC7871349 DOI: 10.3389/fimmu.2020.596086] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 11/25/2020] [Indexed: 12/14/2022] Open
Abstract
Psoriatic arthritis (PsA) is a chronic inflammatory disease belonging to the family of spondyloarthropathies (SpA). PsA commonly aggravates psoriasis of the skin and frequently manifests as an oligoarthritis with axial skeletal involvement and extraarticular manifestations including dactylitis, enthesitis, and uveitis. The weight of genetic predisposition to psoriasis and PsA is illustrated by the concordance rates in monozygotic twins which clearly demonstrate that genomics is insufficient to induce the clinical phenotype. The association of PsA with several single nucleotide polymorphisms (SNPs) at the IL23R locus and the involvement of Th17 cells in the immunopathogenesis of PsA clearly put the IL-23/IL-17 axis in the spotlight. The IL-23 and IL-17 cytokines have a pivotal role in the chronic inflammation of the synovium in PsA and are also prominent in the skin lesions of those with PsA. In this review, we focus on the genetic association of the IL-23/IL-17 axis with PsA and the contribution of these master cytokines in the pathophysiology of the disease, highlighting the main cell types incriminated in PsA and their specific role in the peripheral blood, lesional skin and joints of patients. We then provide an overview of the approved biologic drugs targeting the IL-23/IL-17 axis and discuss the advantages of genetic stratification to enhance personalized therapies in PsA.
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Affiliation(s)
- Matteo Vecellio
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.,Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center, IRCCS, Milan, Italy
| | - Vivien Xanath Hake
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center, IRCCS, Milan, Italy
| | - Connor Davidson
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | | | - B Paul Wordsworth
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Carlo Selmi
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center, IRCCS, Milan, Italy
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22
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Castro-Sanchez P, Teagle AR, Prade S, Zamoyska R. Modulation of TCR Signaling by Tyrosine Phosphatases: From Autoimmunity to Immunotherapy. Front Cell Dev Biol 2020; 8:608747. [PMID: 33425916 PMCID: PMC7793860 DOI: 10.3389/fcell.2020.608747] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/18/2020] [Indexed: 02/06/2023] Open
Abstract
Early TCR signaling is dependent on rapid phosphorylation and dephosphorylation of multiple signaling and adaptor proteins, leading to T cell activation. This process is tightly regulated by an intricate web of interactions between kinases and phosphatases. A number of tyrosine phosphatases have been shown to modulate T cell responses and thus alter T cell fate by negatively regulating early TCR signaling. Mutations in some of these enzymes are associated with enhanced predisposition to autoimmunity in humans, and mouse models deficient in orthologous genes often show T cell hyper-activation. Therefore, phosphatases are emerging as potential targets in situations where it is desirable to enhance T cell responses, such as immune responses to tumors. In this review, we summarize the current knowledge about tyrosine phosphatases that regulate early TCR signaling and discuss their involvement in autoimmunity and their potential as targets for tumor immunotherapy.
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Affiliation(s)
- Patricia Castro-Sanchez
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Alexandra R Teagle
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Sonja Prade
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Rose Zamoyska
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
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23
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Chen J, Yuan F, Fan X, Wang Y. Psoriatic arthritis: A systematic review of non-HLA genetic studies and important signaling pathways. Int J Rheum Dis 2020; 23:1288-1296. [PMID: 32761870 DOI: 10.1111/1756-185x.13879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/30/2020] [Accepted: 05/17/2020] [Indexed: 01/20/2023]
Abstract
Psoriatic arthritis (PsA) is a common, chronic inflammatory disease with complex pathogenesis. In recent years, a number of susceptibility non-human leukocyte antigen (HLA) genes of PsA have been revealed, which also act as important factors in the pathogenesis of PsA as well as HLA genes. By searching the databases National Center for Biotechnology Information, Google and PubMed, 37 articles are included and 50 susceptibility non-HLA genes for PsA are presented, such as IL23A, TNIP1, TYK2, STAT4, IL12B, RUNX3 and TRAF3IP2. In these non-HLA genes, some are common genes shared with other diseases, whereas most of these susceptibility genes are related to the pathogenesis of PsA by activation or inhibition of the signaling pathways. Several signaling pathways possibly implicated in the pathogenesis of PsA are introduced in this paper, including the 2 mainly signaling pathways, IL23/Th17 signaling pathway and NF-κB signaling pathway, and the other involved signaling pathways, such as JAK-STAT signaling pathway and MAPK signaling pathway.
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Affiliation(s)
- Jingjing Chen
- Department of Dermatology, Anhui Provincial Corps Hospital of Chinese People's Armed Police Forces, Hefei, China
| | - Feng Yuan
- Department of Dermatology, Anhui Provincial Corps Hospital of Chinese People's Armed Police Forces, Hefei, China
| | - Xing Fan
- Institute of Dermatology, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yahua Wang
- Department of Dermatology, Anhui Provincial Corps Hospital of Chinese People's Armed Police Forces, Hefei, China
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24
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Castillo R, Scher JU. Not your average joint: Towards precision medicine in psoriatic arthritis. Clin Immunol 2020; 217:108470. [PMID: 32473975 DOI: 10.1016/j.clim.2020.108470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 12/31/2022]
Abstract
Precision medicine, propelled by advances in multi-omics methods and analytics, aims to revolutionize patient care by using clinically-actionable molecular markers to guide diagnostic and therapeutic decisions. We describe the applications of precision medicine in risk stratification, drug selection, and treatment response prediction in psoriatic arthritis, for which targeted, personalized approaches are steadily emerging.
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Affiliation(s)
- Rochelle Castillo
- Department of Medicine, Division of Rheumatology, New York University School of Medicine, New York, NY, United States of America
| | - Jose U Scher
- Department of Medicine, Division of Rheumatology, New York University School of Medicine, New York, NY, United States of America; Psoriatic Arthritis Center, New York University School of Medicine, New York, NY, United States of America.
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25
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Schurman SH, O'Hanlon TP, McGrath JA, Gruzdev A, Bektas A, Xu H, Garantziotis S, Zeldin DC, Miller FW. Transethnic associations among immune-mediated diseases and single-nucleotide polymorphisms of the aryl hydrocarbon response gene ARNT and the PTPN22 immune regulatory gene. J Autoimmun 2019; 107:102363. [PMID: 31759816 DOI: 10.1016/j.jaut.2019.102363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Because immune responses are sensitive to environmental changes that drive selection of genetic variants, we hypothesized that polymorphisms of some xenobiotic response and immune response genes may be associated with specific types of immune-mediated diseases (IMD), while others may be associated with IMD as a larger category regardless of specific phenotype or ethnicity. OBJECTIVE To examine transethnic gene-IMD associations for single nucleotide polymorphism (SNP) frequencies of prototypic xenobiotic response genes-aryl hydrocarbon receptor (AHR), AHR nuclear translocator (ARNT), AHR repressor (AHRR) - and a prototypic immune response gene, protein tyrosine phosphatase, non-receptor type 22 (PTPN22), in subjects from the Environmental Polymorphisms Registry (EPR). METHODS Subjects (n = 3731) were genotyped for 14 SNPs associated with functional variants of the AHR, ARNT, AHRR, and PTPN22 genes, and their frequencies were compared among African Americans (n = 1562), Caucasians (n = 1838), and Hispanics (n = 331) with previously reported data. Of those genotyped, 2015 EPR subjects completed a Health and Exposure survey. SNPs were assessed via PLINK for associations with IMD, which included those with autoimmune diseases, allergic disorders, asthma, or idiopathic pulmonary fibrosis. Transethnic meta-analyses were performed using METAL and MANTRA approaches. RESULTS ARNT SNP rs11204735 was significantly associated with autoimmune disease by transethnic meta-analyses using METAL (odds ratio, OR [95% confidence interval] = 1.29 [1.08-1.55]) and MANTRA (ORs ranged from 1.29 to 1.30), whereas ARNT SNP rs1889740 showed a significant association with autoimmune disease by METAL (OR = 1.25 [1.06-1.47]). For Caucasian females, PTPN22 SNP rs2476601 was significantly associated with autoimmune disease by allelic association tests (OR = 1.99, [1.30-3.04]). In Caucasians and Caucasian males, PTPN22 SNP rs3811021 was significantly associated with IMD (OR = 1.39 [1.12-1.72] and 1.50 [1.12-2.02], respectively) and allergic disease (OR = 1.39 [1.12-1.71], and 1.62 [1.19-2.20], respectively). In the transethnic meta-analysis, PTPN22 SNP rs3811021 was significantly implicated in IMD by METAL (OR = 1.31 [1.10-1.56]), and both METAL and MANTRA suggested that rs3811021 was associated with IMD and allergic disease in males across all three ethnic groups (IMD METAL OR = 1.50 [1.15-1.95]; IMD MANTRA ORs ranged from 1.47 to 1.50; allergic disease METAL OR = 1.58 [1.20-2.08]; allergic disease MANTRA ORs ranged from 1.55 to 1.59). CONCLUSIONS Some xenobiotic and immune response gene polymorphisms were shown here, for the first time, to have associations across a broad spectrum of IMD and ethnicities. Our findings also suggest a role for ARNT in the development of autoimmune diseases, implicating environmental factors metabolized by this pathway in pathogenesis. Further studies are needed to confirm these data, assess the implications of these findings, define gene-environment interactions, and explore the mechanisms leading to these increasingly prevalent disorders.
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Affiliation(s)
- Shepherd H Schurman
- Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, USA; Research Triangle Park, NC, USA.
| | - Terrance P O'Hanlon
- Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, USA; Bethesda, MD, USA.
| | | | - Artiom Gruzdev
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA.
| | - Arsun Bektas
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA.
| | - Hong Xu
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD, USA.
| | - Stavros Garantziotis
- Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, USA; Research Triangle Park, NC, USA.
| | - Darryl C Zeldin
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA.
| | - Frederick W Miller
- Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, USA; Research Triangle Park, NC, USA; Bethesda, MD, USA.
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Häupl T, Skapenko A, Hoppe B, Skriner K, Burkhardt H, Poddubnyy D, Ohrndorf S, Sewerin P, Mansmann U, Stuhlmüller B, Schulze-Koops H, Burmester GR. [Biomarkers and imaging for diagnosis and stratification of rheumatoid arthritis and spondylarthritis in the BMBF consortium ArthroMark]. Z Rheumatol 2019; 77:16-23. [PMID: 29691690 DOI: 10.1007/s00393-018-0458-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Rheumatic diseases are among the most common chronic inflammatory disorders. Besides severe pain and progressive destruction of the joints, rheumatoid arthritis (RA), spondyloarthritides (SpA) and psoriatic arthritis (PsA) impair working ability, reduce quality of life and if treated insufficiently may enhance mortality. With the introduction of biologics to treat these diseases, the demand for biomarkers of early diagnosis and therapeutic stratification has been growing continuously. The main goal of the consortium ArthroMark is to identify new biomarkers and to apply modern imaging technologies for diagnosis, follow-up assessment and stratification of patients with RA, SpA and PsA. With the development of new biomarkers for these diseases, the ArthroMark project contributes to research in chronic diseases of the musculoskeletal system. The cooperation between different national centers will utilize site-specific resources, such as biobanks and clinical studies for sharing and gainful networking of individual core areas in biomarker analysis. Joint data management and harmonization of data assessment as well as best practice characterization of patients with new imaging technologies will optimize quality of marker validation.
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Affiliation(s)
- T Häupl
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland.
| | - A Skapenko
- Sektion Rheumatologie und Klinische Immunologie, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, München, Deutschland
| | - B Hoppe
- Zentralinstitut für Laboratoriumsmedizin und Pathobiochemie, Charité, Berlin, Deutschland
| | - K Skriner
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
| | - H Burkhardt
- Abteilung für Rheumatologie, Johann-Wolfgang-Goethe-Universität, Frankfurt, Deutschland
| | - D Poddubnyy
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin (CBF), Berlin, Deutschland
| | - S Ohrndorf
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
| | - P Sewerin
- Medizinische Klinik für Endokrinologie, Diabetologie und Rheumatologie, Heinrich-Heine-Universität, Düsseldorf, Deutschland
| | - U Mansmann
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie (IBE), Ludwig-Maximilians-Universität, München, Deutschland
| | - B Stuhlmüller
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
| | - H Schulze-Koops
- Sektion Rheumatologie und Klinische Immunologie, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, München, Deutschland
| | - G-R Burmester
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
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Mustelin T, Bottini N, Stanford SM. The Contribution of PTPN22 to Rheumatic Disease. Arthritis Rheumatol 2019; 71:486-495. [PMID: 30507064 PMCID: PMC6438733 DOI: 10.1002/art.40790] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/27/2018] [Indexed: 12/22/2022]
Abstract
One of the unresolved questions in modern medicine is why certain individuals develop a disorder such as rheumatoid arthritis (RA) or lupus, while others do not. Contemporary science indicates that genetics is partly responsible for disease development, while environmental and stochastic factors also play a role. Among the many genes that increase the risk of autoimmune conditions, the risk allele encoding the W620 variant of protein tyrosine phosphatase N22 (PTPN22) is shared between multiple rheumatic diseases, suggesting that it plays a fundamental role in the development of immune dysfunction. Herein, we discuss how the presence of the PTPN22 risk allele may shape the signs and symptoms of these diseases. Besides the emerging clarity regarding how PTPN22 tunes T and B cell antigen receptor signaling, we discuss recent discoveries of important functions of PTPN22 in myeloid cell lineages. Taken together, these new insights reveal important clues to the molecular mechanisms of prevalent diseases like RA and lupus and may open new avenues for the development of personalized therapies that spare the normal function of the immune system.
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Affiliation(s)
- Tomas Mustelin
- Division of Rheumatology, Department of Medicine, University of Washington, 750 Republican Street, Room E507, Seattle, WA 99108, phone (206) 616-6130,
| | - Nunzio Bottini
- Department of Medicine, University of California San Diego, 9500 Gilman Drive, MC0656, La Jolla, CA 92093-0656, phone (858) 246-2398 (N.B.) and (858) 246-2397 (S.M.S.), (N.B.) and (S.M.S.)
| | - Stephanie M. Stanford
- Department of Medicine, University of California San Diego, 9500 Gilman Drive, MC0656, La Jolla, CA 92093-0656, phone (858) 246-2398 (N.B.) and (858) 246-2397 (S.M.S.), (N.B.) and (S.M.S.)
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Tóth KF, Ádám D, Bíró T, Oláh A. Cannabinoid Signaling in the Skin: Therapeutic Potential of the "C(ut)annabinoid" System. Molecules 2019; 24:E918. [PMID: 30845666 PMCID: PMC6429381 DOI: 10.3390/molecules24050918] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 02/06/2023] Open
Abstract
The endocannabinoid system (ECS) has lately been proven to be an important, multifaceted homeostatic regulator, which influences a wide-variety of physiological processes all over the body. Its members, the endocannabinoids (eCBs; e.g., anandamide), the eCB-responsive receptors (e.g., CB₁, CB₂), as well as the complex enzyme and transporter apparatus involved in the metabolism of the ligands were shown to be expressed in several tissues, including the skin. Although the best studied functions over the ECS are related to the central nervous system and to immune processes, experimental efforts over the last two decades have unambiguously confirmed that cutaneous cannabinoid ("c[ut]annabinoid") signaling is deeply involved in the maintenance of skin homeostasis, barrier formation and regeneration, and its dysregulation was implicated to contribute to several highly prevalent diseases and disorders, e.g., atopic dermatitis, psoriasis, scleroderma, acne, hair growth and pigmentation disorders, keratin diseases, various tumors, and itch. The current review aims to give an overview of the available skin-relevant endo- and phytocannabinoid literature with a special emphasis on the putative translational potential, and to highlight promising future research directions as well as existing challenges.
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Affiliation(s)
- Kinga Fanni Tóth
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
| | - Dorottya Ádám
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
| | - Tamás Bíró
- Department of Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
- HCEMM Nonprofit Ltd., 6720 Szeged, Hungary.
| | - Attila Oláh
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
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29
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Preventing psoriatic arthritis: focusing on patients with psoriasis at increased risk of transition. Nat Rev Rheumatol 2019; 15:153-166. [DOI: 10.1038/s41584-019-0175-0] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Cretu D, Gao L, Liang K, Soosaipillai A, Diamandis EP, Chandran V. Differentiating Psoriatic Arthritis From Psoriasis Without Psoriatic Arthritis Using Novel Serum Biomarkers. Arthritis Care Res (Hoboken) 2019; 70:454-461. [PMID: 28586166 DOI: 10.1002/acr.23298] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 06/01/2017] [Indexed: 01/02/2023]
Abstract
OBJECTIVE There is a high prevalence of undiagnosed psoriatic arthritis (PsA) in patients with psoriasis. Identifying soluble biomarkers for PsA will help in screening psoriasis patients for appropriate rheumatology referral. We therefore aimed to investigate whether serum levels of novel markers previously discovered by quantitative mass spectrometric analysis of synovial fluid and skin biopsies performs better than the C-reactive protein (CRP) level in differentiating PsA patients from those with psoriasis without PsA (PsC). METHODS In this case-control study, serum samples were obtained from 100 subjects with PsA, 100 with PsC, and 100 healthy controls. Patients with PsA and PsC were group matched for age, sex, psoriasis duration, and Psoriasis Area and Severity Index and were not currently receiving biologic treatment. Using enzyme-linked immunosorbent assay, 4 high-priority markers (Mac-2-binding protein [M2BP], CD5-like protein [CD5L], myeloperoxidase [MPO], and integrin β5 [ITGβ5]), as well as previously established markers (matrix metalloproteinase 3 [MMP-3] and CRP level) were assayed. Data were analyzed using logistic regression. Receiver operating characteristic (ROC) curves were plotted. RESULTS In comparisons to controls, CD5L, ITGβ5, M2BP, MPO, MMP-3, and CRP level were independently associated with PsA, while only CD5L, M2BP, and MPO were independently associated with PsC alone. In comparisons to PsC, ITGβ5, M2BP, and CRP level were independently associated with PsA. ROC analysis of this model shows an area under the curve (AUC) of 0.85 (95% confidence interval [95% CI] 0.80-0.90). The model that included CRP level alone had an AUC of 0.71 (95% CI 0.64-0.78). CONCLUSION CD5L, ITGβ5, M2BP, MPO, MMP-3, and CRP level are markers for PsA. The combination of ITGβ5, M2BP, and CRP level differentiates PsA from PsC, and performs better than CRP level alone.
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Affiliation(s)
| | - Lisa Gao
- University of Waterloo, Waterloo, Ontario, Canada
| | - Kun Liang
- University of Waterloo, Waterloo, Ontario, Canada
| | | | | | - Vinod Chandran
- Toronto Western Hospital, Krembil Research Institute, and University of Toronto, Toronto, Ontario, Canada
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Aterido A, Cañete JD, Tornero J, Ferrándiz C, Pinto JA, Gratacós J, Queiró R, Montilla C, Torre-Alonso JC, Pérez-Venegas JJ, Fernández Nebro A, Muñoz-Fernández S, González CM, Roig D, Zarco P, Erra A, Rodríguez J, Castañeda S, Rubio E, Salvador G, Díaz-Torné C, Blanco R, Willisch Domínguez A, Mosquera JA, Vela P, Sánchez-Fernández SA, Corominas H, Ramírez J, de la Cueva P, Fonseca E, Fernández E, Puig L, Dauden E, Sánchez-Carazo JL, López-Estebaranz JL, Moreno D, Vanaclocha F, Herrera E, Blanco F, Fernández-Gutiérrez B, González A, Pérez-García C, Alperi-López M, Olivé Marques A, Martínez-Taboada V, González-Álvaro I, Sanmartí R, Tomás Roura C, García-Montero AC, Bonàs-Guarch S, Mercader JM, Torrents D, Codó L, Gelpí JL, López-Corbeto M, Pluma A, López-Lasanta M, Tortosa R, Palau N, Absher D, Myers R, Marsal S, Julià A. Genetic variation at the glycosaminoglycan metabolism pathway contributes to the risk of psoriatic arthritis but not psoriasis. Ann Rheum Dis 2018; 78:annrheumdis-2018-214158. [PMID: 30552173 DOI: 10.1136/annrheumdis-2018-214158] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/16/2018] [Accepted: 11/16/2018] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Psoriatic arthritis (PsA) is a chronic inflammatory arthritis affecting up to 30% of patients with psoriasis (Ps). To date, most of the known risk loci for PsA are shared with Ps, and identifying disease-specific variation has proven very challenging. The objective of the present study was to identify genetic variation specific for PsA. METHODS We performed a genome-wide association study in a cohort of 835 patients with PsA and 1558 controls from Spain. Genetic association was tested at the single marker level and at the pathway level. Meta-analysis was performed with a case-control cohort of 2847 individuals from North America. To confirm the specificity of the genetic associations with PsA, we tested the associated variation using a purely cutaneous psoriasis cohort (PsC, n=614) and a rheumatoid arthritis cohort (RA, n=1191). Using network and drug-repurposing analyses, we further investigated the potential of the PsA-specific associations to guide the development of new drugs in PsA. RESULTS We identified a new PsA risk single-nucleotide polymorphism at B3GNT2 locus (p=1.10e-08). At the pathway level, we found 14 genetic pathways significantly associated with PsA (pFDR<0.05). From these, the glycosaminoglycan (GAG) metabolism pathway was confirmed to be disease-specific after comparing the PsA cohort with the cohorts of patients with PsC and RA. Finally, we identified candidate drug targets in the GAG metabolism pathway as well as new PsA indications for approved drugs. CONCLUSION These findings provide insights into the biological mechanisms that are specific for PsA and could contribute to develop more effective therapies.
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Affiliation(s)
- Adrià Aterido
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain.,Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Juan D Cañete
- Rheumatology Department, Hospital Clínic de Barcelona and IDIBAPS, Barcelona, Spain
| | - Jesús Tornero
- Rheumatology Department, Hospital Universitario Guadalajara, Guadalajara, Spain
| | - Carlos Ferrándiz
- Dermatology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - José Antonio Pinto
- Rheumatology Department, Complejo Hospitalario Juan Canalejo, A Coruña, Spain
| | - Jordi Gratacós
- Rheumatology Department, Hospital Parc Taulí, Sabadell, Spain
| | - Rubén Queiró
- Rheumatology Department, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Carlos Montilla
- Rheumatology Department, Hospital Virgen de la Vega, Salamanca, Spain
| | | | | | - Antonio Fernández Nebro
- Rheumatology Department, Instituto de Investigación Biomédica de Málaga, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Santiago Muñoz-Fernández
- Rheumatology Department, Hospital Universitario Infanta Sofía, Universidad Europea, Madrid, Spain
| | - Carlos M González
- Rheumatology Department, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Daniel Roig
- Rheumatology Department, Hospital Moisès Broggi, Barcelona, Spain
| | - Pedro Zarco
- Rheumatology Department, Hospital Universitario Fundación Alcorcón, Madrid, Spain
| | - Alba Erra
- Rheumatology Department, Hospital Sant Rafael, Barcelona, Spain
| | - Jesús Rodríguez
- Rheumatology Department, Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Santos Castañeda
- Rheumatology Department, Hospital Universitario La Princesa, IIS La Princesa, Madrid, Spain
| | - Esteban Rubio
- Rheumatology Department, Centro de Salud Virgen de los Reyes, Sevilla, Spain
| | - Georgina Salvador
- Rheumatology Department, Hospital Universitario Mútua de Terrassa, Terrassa, Spain
| | - Cesar Díaz-Torné
- Rheumatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Ricardo Blanco
- Rheumatology Department, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | - José Antonio Mosquera
- Rheumatology Department, Complejo Hospitalario Hospital Provincial de Pontevedra, Pontevedra, Spain
| | - Paloma Vela
- Rheumatology Department, Hospital General Universitario de Alicante, Alicante, Spain
| | | | - Héctor Corominas
- Rheumatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,Rheumatology Department, Hospital Dos de Maig, Barcelona, Spain
| | - Julio Ramírez
- Rheumatology Department, Hospital Clínic de Barcelona and IDIBAPS, Barcelona, Spain
| | - Pablo de la Cueva
- Dermatology Department, Hospital Universitario Infanta Leonor, Madrid, Spain
| | - Eduardo Fonseca
- Dermatology Department, Complejo Hospitalario Universitario de A Coruña, A Coruña, Spain
| | - Emilia Fernández
- Dermatology Department, Hospital Universitario de Salamanca, Salamanca, Spain
| | - Lluis Puig
- Dermatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Esteban Dauden
- Dermatology Department, Hospital Universitario La Princesa, IIS La Princesa, Madrid, Spain
| | | | | | - David Moreno
- Dermatology Department, Hospital Virgen Macarena, Sevilla, Spain
| | | | - Enrique Herrera
- Dermatology Department, Hospital Universitario Virgen de la Victoria, Málaga, Spain
| | - Francisco Blanco
- Rheumatology Department, INIBIC-Hospital Universitario A Coruña, A Coruña, Spain
| | | | - Antonio González
- Instituto de Investigación Sanitaria Hospital Clínico Universitario de Santiago, Santiago de Compostela, Spain
| | | | | | | | | | | | - Raimon Sanmartí
- Rheumatology Department, Hospital Clínic de Barcelona and IDIBAPS, Barcelona, Spain
| | | | | | - Sílvia Bonàs-Guarch
- Barcelona Supercomputing Centre (BSC), Joint BSC-CRG-IRB Research Program in Computational Biology, Barcelona, Spain
| | - Josep Maria Mercader
- Barcelona Supercomputing Centre (BSC), Joint BSC-CRG-IRB Research Program in Computational Biology, Barcelona, Spain
| | - David Torrents
- Barcelona Supercomputing Centre (BSC), Joint BSC-CRG-IRB Research Program in Computational Biology, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Laia Codó
- Life Sciences Department, Barcelona Supercomputing Centre, Barcelona, Spain
| | - Josep Lluís Gelpí
- Life Sciences Department, Barcelona Supercomputing Centre, Barcelona, Spain
| | | | - Andrea Pluma
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Maria López-Lasanta
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Raül Tortosa
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Nuria Palau
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Devin Absher
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, USA
| | - Richard Myers
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, USA
| | - Sara Marsal
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Antonio Julià
- Rheumatology Research Group, Vall d'Hebron Research Institute, Barcelona, Spain
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O'Rielly DD, Rahman P. A review of ixekizumab in the treatment of psoriatic arthritis. Expert Rev Clin Immunol 2018; 14:993-1002. [PMID: 30360663 DOI: 10.1080/1744666x.2018.1540931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Psoriatic arthritis (PsA) is a heterogeneous inflammatory disorder with articular, peri-articular, and extra-articular features along with selected co-morbidities as a sequela to chronic inflammation. There is accumulating evidence that the Th-17 signaling pathway is of critical importance in PsA pathogenesis. Areas covered: Ixekizumab (IXE) is a humanized immunoglobulin G subclass 4 (IgG4) monoclonal antibody directed against IL-17A. Two phase III randomized clinical trials, SPIRIT-P1 and SPIRIT-P2, unequivocally demonstrated superiority of IXE (80 mg every two or 4 weeks) dosing over placebo in moderate-to-severe PsA patients that failed either NSAIDs, conventional disease-modifying anti-rheumatic drugs (csDMARDs), or tumor necrosis factor-α inhibitors (TNFi) for numerous articular and cutaneous parameters. IXE also delayed structural progression of PsA. No new safety signals were identified as compared with chronic plaque psoriasis studies which included many more patients. Expert opinion: IXE is a highly effective treatment for moderate to severe PsA patients, including those that have been previously exposed to csDMARD and TNFi. Most domains of PsA significantly improved with IXE treatment and disease modification was achieved.
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Affiliation(s)
- Darren D O'Rielly
- a Faculty of Medicine , Memorial University of Newfoundland , St. John's , Newfoundland and Labrador , Canada
| | - Proton Rahman
- a Faculty of Medicine , Memorial University of Newfoundland , St. John's , Newfoundland and Labrador , Canada
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Solmaz D, Eder L, Aydin SZ. Update on the epidemiology, risk factors, and disease outcomes of psoriatic arthritis. Best Pract Res Clin Rheumatol 2018; 32:295-311. [PMID: 30527433 DOI: 10.1016/j.berh.2018.09.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 08/21/2018] [Accepted: 09/09/2018] [Indexed: 02/08/2023]
Abstract
Psoriatic arthritis (PsA) is a chronic inflammatory disease that affects different structures of the musculoskeletal system in addition to the skin and the nail. The complexity of the disease had been a barrier to understand the pathogenesis and define valid outcome tools; however, our understanding about the disease has considerably increased with time mainly because of the advances in imaging, new discoveries in genetics and underlying inflammatory pathways, and better understanding of the epidemiology of the disease and environmental risk factors. The purpose of this review is to summarize developments and changes in epidemiology, risk factors for developing PsA, and outcome measures with a focus on data obtained in the last 10 years.
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Affiliation(s)
- Dilek Solmaz
- Division of Rheumatology, University of Ottawa, 1967 Riverside Drive, Ottawa, ON, K1H 7W9, Canada; Izmir Katip Celebi University, Izmir, Turkey.
| | - Lihi Eder
- Women's College Research Institute, Women's College Hospital, The Department of Medicine, University of Toronto, Toronto, ON, Canada.
| | - Sibel Zehra Aydin
- Division of Rheumatology, University of Ottawa, 1967 Riverside Drive, Ottawa, ON, K1H 7W9, Canada; The Ottawa Hospital Research Institute, University of Ottawa, 1967 Riverside Drive, Ottawa, ON, K1H 7W9, Canada.
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Carmona FD, Martín J. The potential of PTPN22 as a therapeutic target for rheumatoid arthritis. Expert Opin Ther Targets 2018; 22:879-891. [PMID: 30251905 DOI: 10.1080/14728222.2018.1526924] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION PTPN22 encodes a lymphoid-specific tyrosine phosphatase (LYP) that is a master regulator of the immune response. This gene is a major susceptibility factor for a wide range of autoimmune conditions, including rheumatoid arthritis (RA) for which it represents the strongest non-HLA contributor to disease risk. A missense PTPN22 allele (R620W) affecting the protein-protein interaction of LYP with other relevant players was described as the functional variant of the association. This review will focus on the role of PTPN22 in the pathogenic mechanisms underlying RA predisposition and discuss the possibility of developing LYP-based treatment strategies with a potential application in clinical practice. Areas covered: This review covers the literature showing how PTPN22 is implicated in signalling pathways involved in the autoimmune and autoinflammatory processes underlying RA. Insights obtained from studies aimed at developing novel selective LYP suppressors for treating RA are summarized. Expert opinion: Targeting key risk factors during the early steps of the disease may represent a good strategy to accomplish complete disease remission. As cumulating evidences suggest that PTPN22 R620W is a gain-of-function variant, a growing interest in developing LYP inhibitors has arisen. The potential efficacy and possible application of such compounds are discussed.
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Affiliation(s)
- F David Carmona
- a Departamento de Genética e Instituto de Biotecnología , Universidad de Granada , Granada , Spain
| | - Javier Martín
- b Instituto de Parasitología y Biomedicina López-Neyra , Consejo Superior de Investigaciones Científicas, IPBLN-CSIC , Granada , Spain
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Boutet MA, Nerviani A, Gallo Afflitto G, Pitzalis C. Role of the IL-23/IL-17 Axis in Psoriasis and Psoriatic Arthritis: The Clinical Importance of Its Divergence in Skin and Joints. Int J Mol Sci 2018; 19:ijms19020530. [PMID: 29425183 PMCID: PMC5855752 DOI: 10.3390/ijms19020530] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 02/05/2018] [Accepted: 02/05/2018] [Indexed: 12/14/2022] Open
Abstract
Psoriasis is a chronic systemic inflammatory disease causing erythematosus and scaly skin plaques; up to 30% of patients with psoriasis develop Psoriatic Arthritis (PsA), which is characterised by inflammation and progressive damage of the peripheral joints and/or the spine and/or the entheses. The pathogenic mechanisms driving the skin disorder in psoriasis and the joint disease in PsA are sustained by the activation of inflammatory pathways that can be overlapping, but also, at least partially, distinct. Cytokines members of the IL-23/IL-17 family, critical in the development of autoimmunity, are abundantly expressed within the cutaneous lesions but also seem to be involved in chronic inflammation and damage of the synovium though, as it will be here discussed, not in all patients. In this review, we will focus on the state of the art of the molecular features of psoriatic skin and joints, focusing on the specific role of the IL-23/IL-17 pathway in each of these anatomical districts. We will then offer an overview of the approved and in-development biologics targeting this axis, emphasising how the availability of the “target” in the diseased tissues could provide a plausible explanation for the heterogeneous clinical efficacy of these drugs, thus opening future perspective of personalised therapies.
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Affiliation(s)
- Marie-Astrid Boutet
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
| | - Alessandra Nerviani
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
| | - Gabriele Gallo Afflitto
- Unit of Allergology, Immunology & Rheumatology, Department of Medicine, Università campus Bio-Medico di Roma, 00128 Rome, Italy.
| | - Costantino Pitzalis
- Centre for Experimental Medicine & Rheumatology, William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
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36
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Loft ND, Skov L, Rasmussen MK, Gniadecki R, Dam TN, Brandslund I, Hoffmann HJ, Andersen MR, Dessau RB, Bergmann AC, Andersen NM, Abildtoft MK, Andersen PS, Hetland ML, Glintborg B, Bank S, Vogel U, Andersen V. Genetic polymorphisms associated with psoriasis and development of psoriatic arthritis in patients with psoriasis. PLoS One 2018; 13:e0192010. [PMID: 29389950 PMCID: PMC5794107 DOI: 10.1371/journal.pone.0192010] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/14/2018] [Indexed: 02/07/2023] Open
Abstract
Background Psoriasis (PsO) is a chronic inflammatory disease with predominantly cutaneous manifestations. Approximately one third of patients with PsO develop psoriatic arthritis (PsA), whereas the remaining proportion of patients has isolated cutaneous psoriasis (PsC). These two phenotypes share common immunology, but with different heredity that might in part be explained by genetic variables. Methods Using a candidate gene approach, we studied 53 single nucleotide polymorphisms (SNPs) in 37 genes that regulate inflammation. In total, we assessed 480 patients with PsO from DERMBIO, of whom 151 had PsC for 10 years or more (PsC10), 459 patients with PsA from DANBIO, and 795 healthy controls. Using logistic regression analysis, crude and adjusted for age and gender, we assessed associations between genetic variants and PsO, PsC10, and PsA, as well as associations between genetic variants and development of PsA in PsO. Results Eleven polymorphisms in 10 genes were nominally associated with PsO and/or PsC and/or PsA (P < 0.05). After correction for multiple testing with a false discovery rate of 5%, two SNPs remained significant: TNF (rs361525) was associated with PsO, PsC10, and PsA; and IL12B (rs6887695) was associated with PsO. Conclusion Among a cohort of Danish patients with moderate-to-severe psoriasis, two SNPs in the IL12B and TNF genes were associated with susceptibility of psoriasis. None of the SNPs were specifically associated with isolated cutaneous psoriasis or psoriatic arthritis.
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Affiliation(s)
- Nikolai Dyrberg Loft
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
- * E-mail:
| | - Lone Skov
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | | | - Robert Gniadecki
- Department of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark
| | | | - Ivan Brandslund
- Department of Clinical Immunology and Biochemistry, Lillebaelt Hospital, Vejle, Denmark
| | - Hans Jürgen Hoffmann
- Institute of Clinical Medicine, Aarhus University, and Department of Respiratory Diseases and Allergy B, Aarhus University Hospital, Aarhus, Denmark
| | - Malene Rohr Andersen
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Ram Benny Dessau
- Department of Clinical Microbiology, Slagelse Hospital, Slagelse, Denmark
| | - Ann Christina Bergmann
- Focused research unit for Molecular Diagnostic and Clinical Research, IRS-Center Soenderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
| | - Niels Møller Andersen
- Focused research unit for Molecular Diagnostic and Clinical Research, IRS-Center Soenderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
| | | | - Paal Skytt Andersen
- Department of Microbiology and Infection Control, Serum Institute, Copenhagen, Denmark
| | - Merete Lund Hetland
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The DANBIO registry and Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Centre of Head and Orthopaedics, Rigshospitalet, Glostrup, Denmark
| | - Bente Glintborg
- The DANBIO registry and Copenhagen Center for Arthritis Research (COPECARE), Center for Rheumatology and Spine Diseases, Centre of Head and Orthopaedics, Rigshospitalet, Glostrup, Denmark
- Department of Rheumatology, Herlev and Gentofte Hospital, Hellerup, Denmark
| | - Steffen Bank
- Focused research unit for Molecular Diagnostic and Clinical Research, IRS-Center Soenderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Vibeke Andersen
- Focused research unit for Molecular Diagnostic and Clinical Research, IRS-Center Soenderjylland, Hospital of Southern Jutland, Aabenraa, Denmark
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
- OPEN (Odense Patient data Explorative Network), University of Southern Denmark, Odense, Denmark
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37
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Nigrovic PA, Raychaudhuri S, Thompson SD. Review: Genetics and the Classification of Arthritis in Adults and Children. Arthritis Rheumatol 2017; 70:7-17. [PMID: 29024575 DOI: 10.1002/art.40350] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 10/05/2017] [Indexed: 12/16/2022]
Abstract
Current classification of primary inflammatory arthritis begins from the assumption that adults and children are different. No form of juvenile idiopathic arthritis bears the same name as an adult arthritis, a nomenclature gap with implications for both clinical care and research. Recent genetic data have raised questions regarding this adult/pediatric divide, revealing instead broad patterns that span the age spectrum. Combining these genetic patterns with demographic and clinical data, we propose that inflammatory arthritis can be segregated into 4 main clusters, largely irrespective of pediatric or adult onset: seropositive, seronegative (likely including a distinct group that usually begins in early childhood), spondyloarthritis, and systemic. Each of these broad clusters is internally heterogeneous, highlighting the need for further study to resolve etiologically discrete entities. Eliminating divisions based on arbitrary age cutoffs will enhance opportunities for collaboration between adult and pediatric rheumatologists, thereby helping to promote the understanding and treatment of arthritis.
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Affiliation(s)
- Peter A Nigrovic
- Brigham and Women's Hospital and Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Soumya Raychaudhuri
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, and Broad Institute of MIT and Harvard, Cambridge, Massachusetts
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38
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Cascella R, Strafella C, Ragazzo M, Manzo L, Costanza G, Bowes J, Hüffmeier U, Potenza S, Sangiuolo F, Reis A, Barton A, Novelli G, Orlandi A, Giardina E. KIF3A and IL-4 are disease-specific biomarkers for psoriatic arthritis susceptibility. Oncotarget 2017; 8:95401-95411. [PMID: 29221136 PMCID: PMC5707030 DOI: 10.18632/oncotarget.20727] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/06/2017] [Indexed: 01/17/2023] Open
Abstract
To date, the genes associated with Psoriatic Arthritis (PsA) are principally involved in inflammation, immune response and epidermal differentiation, without any information about the relationship between disease and bone metabolism genes. Our work was focused on 5q31 locus, which contains several genetic variants significantly associated with PsA. The study involved 1526 subjects (500 PsA, 426 PsV, 600 controls). The region was evaluated by selecting and genotyping the SNPs of interest by Real Time PCR and direct sequencing. The results were subjected to biostatistic and bioinformatic analysis. The case-control study highlighted a significant association between KIF3A/IL-4 and PsA, but not with PsV (Psoriasis Vulgaris) patients. In addition, the haplotype analysis revealed two haplotypes significantly associated with PsA susceptibility. The Linkage Disequilibrium (LD) study showed the presence of a specific block in high LD within 132,692,628-132,737,638 bp of 5q31, giving additional evidence of specific association of the 5q31 region in PsA patients. Moreover, KIF3A expression was assessed by immunohistochemistry assays which showed a marked and significant difference of KIF3A expression between pathological and normal tissues. Our analysis described KIF3A and IL-4 as novel susceptibility genes for PsA, suggesting a clear implication of bone metabolism genes in the disease etiopathogenesis.
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Affiliation(s)
- Raffaella Cascella
- Molecular Genetics Laboratory UILDM, Santa Lucia Foundation, Rome, Italy.,Department of Chemical Pharmaceutical and Biomolecular Technologies, Catholic University "Our Lady of Good Counsel" Laprakë, Rruga Dritan Hoxha, Tirana, Albania
| | - Claudia Strafella
- Department of Biomedicine and Prevention, "Tor Vergata" University, Rome, Italy.,Emotest Laboratory, Pozzuoli, Italy
| | - Michele Ragazzo
- Molecular Genetics Laboratory UILDM, Santa Lucia Foundation, Rome, Italy.,Department of Medical Science, Catholic University "Our Lady of Good Counsel" Laprakë, Rruga Dritan Hoxha, Tirana, Albania
| | - Laura Manzo
- Department of Biomedicine and Prevention, "Tor Vergata" University, Rome, Italy.,Emotest Laboratory, Pozzuoli, Italy
| | - Gaetana Costanza
- Anatomic Pathology, Department of Biomedicine and Prevention, Tor Vergata University of Rome, Rome, Italy
| | - John Bowes
- Arthritis Research UK Centre for Genetics and Genomics, The University of Manchester, Manchester, UK
| | - Ulrike Hüffmeier
- Institute of Human Genetics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Saverio Potenza
- Department of Biomedicine and Prevention, "Tor Vergata" University, Rome, Italy
| | - Federica Sangiuolo
- Department of Biomedicine and Prevention, "Tor Vergata" University, Rome, Italy
| | - André Reis
- Institute of Human Genetics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Anne Barton
- Arthritis Research UK Centre for Genetics and Genomics, The University of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust and University of Manchester, Manchester Academy of Health Sciences, Manchester, UK
| | - Giuseppe Novelli
- Department of Biomedicine and Prevention, "Tor Vergata" University, Rome, Italy
| | - Augusto Orlandi
- Anatomic Pathology, Department of Biomedicine and Prevention, Tor Vergata University of Rome, Italy, Tor Vergata University Hospital, Rome, Italy
| | - Emiliano Giardina
- Molecular Genetics Laboratory UILDM, Santa Lucia Foundation, Rome, Italy.,Department of Biomedicine and Prevention, "Tor Vergata" University, Rome, Italy
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39
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Wang H, Wang Z, Rani PL, Fu X, Yu W, Bao F, Yu G, Li J, Li L, Sun L, Yue Z, Zhao Q, Pan Q, Cao J, Wang C, Chi X, Wang Y, Yang Q, Mi Z, Liu H, Zhang F. Identification of PTPN22
,ST6GAL1
and JAZF1
as psoriasis risk genes demonstrates shared pathogenesis between psoriasis and diabetes. Exp Dermatol 2017; 26:1112-1117. [DOI: 10.1111/exd.13393] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 01/02/2023]
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40
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Uebe S, Ehrlicher M, Ekici AB, Behrens F, Böhm B, Homuth G, Schurmann C, Völker U, Jünger M, Nauck M, Völzke H, Traupe H, Krawczak M, Burkhardt H, Reis A, Hüffmeier U. Genome-wide association and targeted analysis of copy number variants with psoriatic arthritis in German patients. BMC MEDICAL GENETICS 2017; 18:92. [PMID: 28835222 PMCID: PMC5569473 DOI: 10.1186/s12881-017-0447-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/31/2017] [Indexed: 01/16/2023]
Abstract
Background Psoriatic Arthritis (PsA) is a chronic inflammatory disease of the joints. PsA is etiologically complex, and 11 susceptibility loci have been identified so far. Most of these overlap with loci associated with psoriasis vulgaris (PsV), the most common psoriatic skin manifestation which is also frequently seen in PsA patients. In addition, two copy number variants (CNVs) are associated with PsV, one of which, located within the LCE3 gene cluster, is also associated with PsA. Finally, an intergenic deletion has been reported as a PsA-specific CNV. Methods We performed a genome-wide association study (GWAS) of CNVs in PsA and assessed the contribution to disease risk by CNVs at known psoriasis susceptibility loci. Results After stringent quality assessment and validation of CNVs of the GWAS with an alternative quantitative method, two significantly associated CNVs remained, one near UXS1, the other one at the TRB locus. However, MLPA analysis did not confirm the CN state in ~1/3 of individuals, and an analysis of an independent case-control-study failed to confirm the initial associations. Furthermore, detailed PCR-based analysis of the sequence at TRB revealed the existence of a more complex genomic sequence most accurately represented by freeze hg18 which accordingly failed to confirm the hg19 sequence. Only rare CNVs were detected at psoriasis susceptibility loci. At three of 12 susceptibility loci with CNVs (CSMD1, IL12B, RYR2), CN variability was confirmed independently by MLPA. Overall, the rate of CNV confirmation by MLPA was strongly dependent upon CNV type, CNV size and the number of array markers involved in a CNV. Conclusion Although we identified PsA associations at several loci and confirmed that the common CNVs at these sites were real, ~1/3 of the common CNV states could not be reproduced. Furthermore, replication analysis failed to confirm the original association. Furthermore, SNP array-based analyses of CNVs were found to be more reliable for deletions than duplications, independent of the respective CNV allele frequency. CNVs are thus good candidate disease variants, while the methods to detect them should be applied cautiously and reproduced by an independent method. Electronic supplementary material The online version of this article (doi:10.1186/s12881-017-0447-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Steffen Uebe
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Maria Ehrlicher
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Arif Bülent Ekici
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Frank Behrens
- Division of Rheumatology and IME Fraunhofer Project Group Translational Medicine & Pharmacology, Goethe University, Frankfurt/Main, Germany
| | - Beate Böhm
- Division of Rheumatology and IME Fraunhofer Project Group Translational Medicine & Pharmacology, Goethe University, Frankfurt/Main, Germany
| | - Georg Homuth
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Claudia Schurmann
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Uwe Völker
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany
| | - Michael Jünger
- Clinic of Dermatology, University of Greifswald, Greifswald, Germany
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University of Greifswald, Greifswald, Germany
| | - Henry Völzke
- Institute for Community Medicine, University of Greifswald, Greifswald, Germany
| | - Heiko Traupe
- Department of Dermatology, University of Münster, Münster, Germany
| | - Michael Krawczak
- Institute for Medical Informatics and Statistics, Christian-Albrechts University Kiel, Kiel, Germany
| | - Harald Burkhardt
- Division of Rheumatology and IME Fraunhofer Project Group Translational Medicine & Pharmacology, Goethe University, Frankfurt/Main, Germany
| | - André Reis
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany
| | - Ulrike Hüffmeier
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 10, 91054, Erlangen, Germany.
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41
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Bowes J, Ashcroft J, Dand N, Jalali-Najafabadi F, Bellou E, Ho P, Marzo-Ortega H, Helliwell PS, Feletar M, Ryan AW, Kane DJ, Korendowych E, Simpson MA, Packham J, McManus R, Brown MA, Smith CH, Barker JN, McHugh N, FitzGerald O, Warren RB, Barton A. Cross-phenotype association mapping of the MHC identifies genetic variants that differentiate psoriatic arthritis from psoriasis. Ann Rheum Dis 2017; 76:1774-1779. [PMID: 28821532 PMCID: PMC5629941 DOI: 10.1136/annrheumdis-2017-211414] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/22/2017] [Accepted: 07/01/2017] [Indexed: 12/17/2022]
Abstract
Objectives Psoriatic arthritis (PsA) is a chronic inflammatory arthritis, with a strong heritable component, affecting patients with psoriasis. Here we attempt to identify genetic variants within the major histocompatibility complex (MHC) that differentiate patients with PsA from patients with cutaneous psoriasis alone (PsC). Methods 2808 patients with PsC, 1945 patients with PsA and 8920 population controls were genotyped. We imputed SNPs, amino acids and classical HLA alleles across the MHC and tested for association with PsA compared to population controls and the PsC patient group. In addition we investigated the impact of the age of disease onset on associations. Results HLA-C*06:02 was protective of PsA compared to PsC (p=9.57×10−66, OR 0.37). The HLA-C*06:02 risk allele was associated with a younger age of psoriasis onset in all patients (p=1.01×10−59). After controlling for the age of psoriasis onset no association of PsA to HLA-C*06:02 (p=0.07) was observed; instead, the most significant association was to amino acid at position 97 of HLA-B (p=1.54×10−9) where the presence of asparagine or serine residue increased PsA risk. Asparagine at position 97 of HLA-B defines the HLA-B*27 alleles. Conclusions By controlling for the age of psoriasis onset, we show, for the first time, that HLA-C*06:02 is not associated with PsA and that amino acid position 97 of HLA-B differentiates PsA from PsC. This amino acid also represents the largest genetic effect for ankylosing spondylitis, thereby refining the genetic overlap of these two spondyloarthropathies. Correcting for bias has important implications for cross-phenotype genetic studies.
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Affiliation(s)
- John Bowes
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - James Ashcroft
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Nick Dand
- Division of Genetics and Molecular Medicine, King's College London, Guy's Hospital, London, UK
| | - Farideh Jalali-Najafabadi
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Eftychia Bellou
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Pauline Ho
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, UK
| | - Helena Marzo-Ortega
- NIHR Leeds Musculoskeletal 12 Biomedical Research Unit, Leeds Teaching Hospitals Trust and Leeds Institute of Rheumatic and Musculoskeletal Disease, University of Leeds, Leeds, UK
| | - Philip S Helliwell
- NIHR Leeds Musculoskeletal 12 Biomedical Research Unit, Leeds Teaching Hospitals Trust and Leeds Institute of Rheumatic and Musculoskeletal Disease, University of Leeds, Leeds, UK
| | - Marie Feletar
- Department of Rheumatology, Emeritus Research, Melbourne, Victoria, Australia
| | - Anthony W Ryan
- Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - David J Kane
- Adelaide and Meath Hospital and Trinity College Dublin, Dublin, Ireland
| | - Eleanor Korendowych
- Royal National Hospital for Rheumatic Diseases and Department Pharmacy and Pharmacology, University of Bath, Bath, UK
| | - Michael A Simpson
- Department of Rheumatology, St Vincent's University Hospital, UCD School of Medicine and Medical Sciences and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Jonathan Packham
- Haywood Academic Rheumatology Centre, Institute of Applied Clinical Science, Keele University, Stoke on Trent, UK
| | - Ross McManus
- Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Matthew A Brown
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Catherine H Smith
- St John's Institute of Dermatology, Guys and St Thomas' Foundation Trust, London, UK
| | - Jonathan N Barker
- St John's Institute of Dermatology, Division of Genetics and Molecular Medicine, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Neil McHugh
- Royal National Hospital for Rheumatic Diseases and Department Pharmacy and Pharmacology, University of Bath, Bath, UK
| | - Oliver FitzGerald
- Department of Rheumatology, St Vincent's University Hospital, UCD School of Medicine and Medical Sciences and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Richard B Warren
- Dermatology Centre, Salford Royal NHS Foundation Trust, University of Manchester, Manchester, UK
| | - Anne Barton
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, UK
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42
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Aflatounian M, Rezaei A, Sadr M, Saghazadeh A, Elhamian N, Sadeghi H, Motevasselian F, Farahmand F, Fallahi G, Motamed F, Najafi M, Rezaei N. Association of PTPN22 Single Nucleotide Polymorphisms with Celiac Disease. Fetal Pediatr Pathol 2017; 36:195-202. [PMID: 28481156 DOI: 10.1080/15513815.2017.1290725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Celiac disease is a chronic autoimmune disease in which gene-environment interactions cause the immune system to unfavorably react to naturally gluten-containing foods. PTPN22 plays a crucial role in regulating the function of various cells of the immune system, particularly T cells. Polymorphisms of the PTPN22 gene have been associated with many autoimmune diseases. The present genetic association study was conducted to investigate the possible associations between PTPNTT single nucleotide polymorphisms (SNPs) and celiac disease in an Iranian population. MATERIALS AND METHODS The study population consisted of 45 patients with celiac disease and 93 healthy controls. The study genotyped five SNPs of the PTPN22 gene: rs12760457, rs1310182, rs1217414, rs33996649, and rs2476601. RESULTS AND CONCLUSIONS Control and patient groups did not differ on the genotype distribution of four of five investigated SNPs in the PTPN22 gene, for example, rs12760457, rs2476601, rs1217414, and rs33996649. The only investigated PTPN22 variant, which could be associated with CD, was rs1310182. A significant increase in the carriage of the T allele of rs1310182 in CD patients was observed (OR (95% CI) = 11.42 (5.41, 24.1), p value < 0.0001). The TT genotype of this SNP was significantly associated with celiac disease. Our study suggests that the rs1310182 SNP of PTPN22 gene may be a predisposing factor of celiac disease in the Iranian population. Further studies are required to investigate the issue in other racial and ethnic subgroups.
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Affiliation(s)
- Majid Aflatounian
- a Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Arezou Rezaei
- b Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Maryam Sadr
- c Molecular Immunology Research Center, Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Amene Saghazadeh
- a Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Nazanin Elhamian
- b Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Hengameh Sadeghi
- c Molecular Immunology Research Center, Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | | | - Fatemeh Farahmand
- a Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | | | - Farzaneh Motamed
- a Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Mehri Najafi
- a Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran
| | - Nima Rezaei
- a Children's Medical Center, Tehran University of Medical Sciences , Tehran , Iran.,d Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN) , Tehran , Iran
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43
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Budu-Aggrey A, Bowes J, Stuart PE, Zawistowski M, Tsoi LC, Nair R, Jadon DR, McHugh N, Korendowych E, Elder JT, Barton A, Raychaudhuri S. A rare coding allele in IFIH1 is protective for psoriatic arthritis. Ann Rheum Dis 2017; 76:1321-1324. [PMID: 28501801 PMCID: PMC5530346 DOI: 10.1136/annrheumdis-2016-210592] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 03/01/2017] [Accepted: 03/12/2017] [Indexed: 12/18/2022]
Abstract
Objectives Psoriatic arthritis (PsA) is an inflammatory arthritis associated with psoriasis. While many common risk alleles have been reported for association with PsA as well as psoriasis, few rare coding alleles have yet been identified. Methods To identify rare coding variation associated with PsA risk or protection, we genotyped 41 267 variants with the exome chip and investigated association within an initial cohort of 1980 PsA cases and 5913 controls. Genotype data for an independent cohort of 2234 PsA cases and 5708 controls was also made available, allowing for a meta-analysis to be performed with the discovery dataset. Results We identified an association with the rare variant rs35667974 (p=2.39x10−6, OR=0.47), encoding an Ile923Val amino acid change in the IFIH1 gene protein product. The association was reproduced in our independent cohort, which reached a high level of significance on meta-analysis with the discovery and replication datasets (p=4.67x10−10). We identified a strong association with IFIH1 when performing multiple-variant analysis (p=6.77x10−6), and found evidence of independent effects between the rare allele and the common PsA variant at the same locus. Conclusion For the first time, we report a rare coding allele in IFIH1 to be protective for PsA. This rare allele has also been identified to have the same direction of effect on type I diabetes and psoriasis. While this association further supports existing evidence for IFIH1 as a causal gene for PsA, mechanistic studies will need to be pursued to confirm that IFIH1 is indeed causal.
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Affiliation(s)
- Ashley Budu-Aggrey
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, University of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust and University of Manchester, Manchester Academy of Health Sciences, Manchester, UK
| | - John Bowes
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, University of Manchester, Manchester, UK
| | - Philip E Stuart
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthew Zawistowski
- Department of Biostatistics, Center for Statistical Genetics, University of Michigan, Ann Arbor, Michigan, USA
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Biostatistics, Center for Statistical Genetics, University of Michigan, Ann Arbor, Michigan, USA
| | - Rajan Nair
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Deepak Rohit Jadon
- Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, UK.,Department of Rheumatology, Cambridge University Hospitals NHSFT, Cambridge, UK
| | - Neil McHugh
- Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, UK.,Department of Pharmacy and Parmacology, University of Bath, Bath, UK
| | - Eleanor Korendowych
- Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, UK
| | - James T Elder
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Ann Arbor Veterans Affairs Hospital, Ann Arbor, Michigan, USA
| | - Anne Barton
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, University of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust and University of Manchester, Manchester Academy of Health Sciences, Manchester, UK
| | - Soumya Raychaudhuri
- Arthritis Research UK Centre for Genetics and Genomics, Centre for Musculoskeletal Research, University of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust and University of Manchester, Manchester Academy of Health Sciences, Manchester, UK.,Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
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44
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Generali E, Ceribelli A, Stazi MA, Selmi C. Lessons learned from twins in autoimmune and chronic inflammatory diseases. J Autoimmun 2017; 83:51-61. [PMID: 28431796 DOI: 10.1016/j.jaut.2017.04.005] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 04/10/2017] [Indexed: 12/16/2022]
Abstract
Autoimmunity and chronic inflammation recognize numerous shared factors and, as a result, the resulting diseases frequently coexist in the same patients or respond to the same treatments. Among the convenient truths of autoimmune and chronic inflammatory diseases, there is now agreement that these are complex conditions in which the individual genetic predisposition provides a rate of heritability. The concordance rates in monozygotic and dizygotic twins allows to estimate the weight of the environment in determining disease susceptibility, despite recent data supporting that only a minority of immune markers depend on hereditary factors. Concordance rates in monozygotic and dizygotic twins should be evaluated over an observation period to minimize the risk of false negatives and this is well represented by type I diabetes mellitus. Further, concordance rates in monozygotic twins should be compared to those in dizygotic twins, which share 50% of their genes, as in regular siblings, but also young-age environmental factors. Twin studies have been extensively performed in several autoimmune conditions and cumulatively suggest that some diseases, i.e. celiac disease and psoriasis, are highly genetically determined, while rheumatoid arthritis or systemic sclerosis have a limited role for genetics. These observations are necessary to interpret data gathered by genome-wide association studies of polymorphisms and DNA methylation in MZ twins. New high-throughput technological platforms are awaited to provide new insights into the mechanisms of disease discordance in twins beyond strong associations such as those with HLA alleles.
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Affiliation(s)
- Elena Generali
- Division of Rheumatology and Clinical Immunology, Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Angela Ceribelli
- Division of Rheumatology and Clinical Immunology, Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Maria Antonietta Stazi
- Italian Twin Registry, Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Carlo Selmi
- Division of Rheumatology and Clinical Immunology, Humanitas Research Hospital, Rozzano, Milan, Italy; BIOMETRA Department, University of Milan, Milan, Italy.
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45
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Saelee P, Kearly A, Nutt SL, Garrett-Sinha LA. Genome-Wide Identification of Target Genes for the Key B Cell Transcription Factor Ets1. Front Immunol 2017; 8:383. [PMID: 28439269 PMCID: PMC5383717 DOI: 10.3389/fimmu.2017.00383] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 03/17/2017] [Indexed: 12/16/2022] Open
Abstract
Background The transcription factor Ets1 is highly expressed in B lymphocytes. Loss of Ets1 leads to premature B cell differentiation into antibody-secreting cells (ASCs), secretion of autoantibodies, and development of autoimmune disease. Despite the importance of Ets1 in B cell biology, few Ets1 target genes are known in these cells. Results To obtain a more complete picture of the function of Ets1 in regulating B cell differentiation, we performed Ets1 ChIP-seq in primary mouse B cells to identify >10,000-binding sites, many of which were localized near genes that play important roles in B cell activation and differentiation. Although Ets1 bound to many sites in the genome, it was required for regulation of less than 5% of them as evidenced by gene expression changes in B cells lacking Ets1. The cohort of genes whose expression was altered included numerous genes that have been associated with autoimmune disease susceptibility. We focused our attention on four such Ets1 target genes Ptpn22, Stat4, Egr1, and Prdm1 to assess how they might contribute to Ets1 function in limiting ASC formation. We found that dysregulation of these particular targets cannot explain altered ASC differentiation in the absence of Ets1. Conclusion We have identified genome-wide binding targets for Ets1 in B cells and determined that a relatively small number of these putative target genes require Ets1 for their normal expression. Interestingly, a cohort of genes associated with autoimmune disease susceptibility is among those that are regulated by Ets1. Identification of the target genes of Ets1 in B cells will help provide a clearer picture of how Ets1 regulates B cell responses and how its loss promotes autoantibody secretion.
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Affiliation(s)
- Prontip Saelee
- Department of Biochemistry, State University of New York at Buffalo, Buffalo, NY, USA
| | - Alyssa Kearly
- Department of Biochemistry, State University of New York at Buffalo, Buffalo, NY, USA
| | - Stephen L Nutt
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Lee Ann Garrett-Sinha
- Department of Biochemistry, State University of New York at Buffalo, Buffalo, NY, USA
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46
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Yin X, Lin Y, Shen C, Wang L, Zuo X, Zheng X, Yang S, Liu J, Wilhelmsen KC, Zhang X. Integration of expression quantitative trait loci and pleiotropy identifies a novel psoriasis susceptibility gene, PTPN1. J Gene Med 2017; 19. [PMID: 27976820 DOI: 10.1002/jgm.2939] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/11/2016] [Accepted: 12/12/2016] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Psoriasis is a common inflammatory skin disease, whereas schizophrenia is a psychiatric disorder with substantial comorbidity. Although these two disorders manifest with apparently unrelated phenotypes, there is some evidence suggesting that they share common genetic factors. METHODS We implemented a genetic analysis incorporating pleiotropy and annotation to genome-wide association summary statistics data for approximately 120 000 psoriasis and schizophrenia samples, as well as whole blood expression quantitative trait loci in 5311 samples. RESULTS We observed a significant pleiotropic effect between psoriasis and schizophrenia (p = 5.92 × 10-43 ). We characterized an enrichment of whole blood expression quantitative trait loci in genome-wide association data for psoriasis and schizophrenia (q1 /q0 > 1.5, p < 10-77 ) and we revealed that common variants for both diseases were more likely to confer expression quantitative trait loci effects (q1 /q0 = 4.197, SE = 0.183). Through joint analysis of the associations in the combined psoriasis and schizophrenia data set, we identified a potential susceptibility PTPN1 gene for psoriasis, which may affect the risk of psoriasis through modulation of the function of TYK2 kinase. CONCLUSIONS The results of the present study highlight the expression quantitative trait loci enrichment and pleiotropy in psoriasis and schizophrenia, and also suggest a possible key role of the PTPN1 gene in the etiology of psoriasis.
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Affiliation(s)
- Xianyong Yin
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China.,Departments of Neurology and Genetics, Renaissance Computing Institute, University of North Carolina at Chapel Hill, NC, USA
| | - Yuan Lin
- Departments of Neurology and Genetics, Renaissance Computing Institute, University of North Carolina at Chapel Hill, NC, USA
| | - Changbing Shen
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China
| | - Ling Wang
- Department of Human Genetics, Genome Institute of Singapore, A*STAR, Singapore, Singapore
| | - Xianbo Zuo
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China
| | - Xiaodong Zheng
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China
| | - Sen Yang
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China
| | - Jianjun Liu
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China.,Department of Human Genetics, Genome Institute of Singapore, A*STAR, Singapore, Singapore
| | - Kirk C Wilhelmsen
- Departments of Neurology and Genetics, Renaissance Computing Institute, University of North Carolina at Chapel Hill, NC, USA
| | - Xuejun Zhang
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Anhui, China.,Key Laboratory of Dermatology, Ministry of Education (Anhui Medical University), Anhui, China
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Greb JE, Goldminz AM, Elder JT, Lebwohl MG, Gladman DD, Wu JJ, Mehta NN, Finlay AY, Gottlieb AB. Psoriasis. Nat Rev Dis Primers 2016; 2:16082. [PMID: 27883001 DOI: 10.1038/nrdp.2016.82] [Citation(s) in RCA: 530] [Impact Index Per Article: 66.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Psoriasis is a chronic, immune-mediated disorder with cutaneous and systemic manifestations and substantial negative effects on patient quality of life. Psoriasis has a strong, albeit polygenic, genetic basis. Whereas approximately half of the accountable genetic effect of psoriasis maps to the major histocompatibility complex, >70 other loci have been identified, many of which implicate nuclear factor-κB, interferon signalling and the IL-23-IL-23 receptor axis. Psoriasis pathophysiology is characterized by abnormal keratinocyte proliferation and immune cell infiltration in the dermis and epidermis involving the innate and adaptive immune systems, with important roles for dendritic cells and T cells, among other cells. Frequent comorbidities are rheumatological and cardiovascular in nature, in particular, psoriatic arthritis. Current treatments for psoriasis include topical agents, photo-based therapies, traditional systemic drugs and biologic agents. Treatments can be used in combination or as monotherapy. Biologic therapies that target specific disease mediators have become a mainstay in the treatment of moderate-to-severe disease, whereas advances in the treatment of mild-to-moderate disease have been limited.
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Affiliation(s)
- Jacqueline E Greb
- Tufts University School of Medicine, Boston, Massachusetts, USA.,Tufts Medical Center, Department of Dermatology, Boston, Massachusetts, USA
| | - Ari M Goldminz
- Tufts Medical Center, Department of Dermatology, Boston, Massachusetts, USA
| | - James T Elder
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.,Ann Arbor Veterans Affairs Hospital, Ann Arbor, Michigan, USA
| | - Mark G Lebwohl
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Dafna D Gladman
- University of Toronto, Toronto, Ontario, Canada.,Krembil Research Institute, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Jashin J Wu
- Department of Dermatology, Kaiser Permanente Los Angeles Medical Center, Los Angeles, California, USA
| | - Nehal N Mehta
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Andrew Y Finlay
- Department of Dermatology and Wound Healing, Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK
| | - Alice B Gottlieb
- Department of Dermatology, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, New York 10595, USA
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Ke X, Song S, Wang X, Shen Y, Kang H, Hong S. Associations of single nucleotide polymorphisms of PTPN22 and Ctla4 genes with the risk of allergic rhinitis in a Chinese Han population. Hum Immunol 2016; 78:227-231. [PMID: 27888068 DOI: 10.1016/j.humimm.2016.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 11/02/2016] [Accepted: 11/22/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND Allergic rhinitis (AR) is an inflammatory disorder of the upper airway. Protein tyrosine phosphatase non-receptor 22 encoded by PTPN22 gene and cytotoxic T-lymphocyte associated 4 encoded by Ctla4 gene are associated with autoimmune diseases. PURPOSE This study was performed to evaluate the potential association of PTPN22 and Ctla4 single nucleotide polymorphisms (SNPs) with AR in a Chinese Han population. METHODS A case-control study was performed in 783 Chinese AR patients and 811 healthy controls. Three SNPs in PTPN22 gene (rs2488457, rs1310182, and rs3789604) and 6 SNPs in Ctla4 gene (rs3087243, rs231779, rs11571302, rs11571315, rs231725, and rs35219727) were detected using a polymerase chain reaction-restriction fragment length polymorphism assay (PCR-RFLP). RESULTS For PTPN22 gene, a significantly decreased prevalence of the rs2488457 CC genotype and C allele was found in AR patients. The frequencies of the rs1310182 CC genotype, CT genotype, and C allele were significantly associated with the risk of AR. For Ctla4 gene, a significantly increased prevalence of the rs11571302 AA genotype, CA genotype and A allele was noted in AR patients. CONCLUSION SNPs of PTPN22 and Ctla4 genes are significantly associated with the risk of AR in the Chinese Han population.
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Affiliation(s)
- Xia Ke
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shanghua Song
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoqiang Wang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Shen
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Houyong Kang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Suling Hong
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Abstract
This article reviews recent advances in psoriatic arthritis (PsA) over the past several years with emphasis on early diagnosis, better understanding of pathogenesis, and new therapeutic approaches. Early diagnosis is important, since people who present late do not fare as well. There are a number of clinical, laboratory, and ultrasound features that can help identify patients destined to develop PsA, and several screening tools have been developed. It is recognized that genetic and epigenetic factors, as well as T cells and cytokines, play a role in the pathogenesis of PsA, and several targets have been identified for therapeutic interventions. New therapies have been developed and tested in PsA and have been found to be highly effective for both skin and joint manifestations of the disease. The expectation is that, in the future, PsA patients will be treated early and more aggressively and that there will not be significant progression of joint damage. Moreover, with effective treatment of the skin and joint disease and management of risk factors for the comorbidities, we can expect to reduce their occurrence and further reduce the excess mortality and reduced quality of life and function in these patients.
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Affiliation(s)
- Dafna D Gladman
- Psoriatic Arthritis Program, Centre for Prognosis Studies in the Rheumatic Diseases, Toronto Western Hospital, Toronto, Ontario, M5T 2S8, Canada
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50
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Abstract
HLA-B27 associated disorders comprise a group of inflammatory conditions which have in common an association with the HLA class I molecule, HLA-B27. Given this association, these diseases are classically considered disorders of adaptive immunity. However, mounting data are challenging this assumption and confirming that innate immunity plays a more prominent role in pathogenesis than previously suspected. In this review, the concept of autoinflammation is discussed and evidence is presented from human and animal models to support a key role for innate immunity in HLA-B27 associated disorders.
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Affiliation(s)
- Cailin H Sibley
- a Department of Medicine, Division of Arthritis & Rheumatic Diseases , Oregon Health & Science University , Portland , Oregon , USA
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