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Byrne L, McCarthy C, Fabre A, Gupta N. Pulmonary Manifestations of Sjögren's Disease. Semin Respir Crit Care Med 2024; 45:397-410. [PMID: 38621712 DOI: 10.1055/s-0044-1785675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Sjögren's disease (SjD) is a chronic, progressive autoimmune condition of exocrine and extraglandular tissues. It can present with isolated disease characterized by lymphocytic infiltration of salivary or lacrimal glands, but in approximately one-third of the patients, lymphocytic infiltration extends beyond exocrine glands to involve extraglandular organs such as the lungs. Pulmonary complications have been reported to occur between 9 and 27% of patients with SjD across studies. Respiratory manifestations occur on a spectrum of severity and include airways disease, interstitial lung disease, cystic lung disease, and lymphoma. Lung involvement can greatly affect patients' quality of life, has a major impact on the overall prognosis, and frequently leads to alteration in the treatment plans, highlighting the importance of maintaining a high index of clinical suspicion and taking appropriate steps to facilitate early recognition and intervention.
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Affiliation(s)
- Louise Byrne
- Department of Respiratory Medicine, St. Vincent's University Hospital, Dublin, Ireland
| | - Cormac McCarthy
- Department of Respiratory Medicine, St. Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Aurelie Fabre
- School of Medicine, University College Dublin, Dublin, Ireland
- Department of Histopathology, St. Vincent's University Hospital, Dublin, Ireland
| | - Nishant Gupta
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Cincinnati, Cincinnati, Ohio
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Fidalgo M, Faria R, Carvalho C, Carvalheiras G, Mendonça D, Farinha F, da Silva BM, Vasconcelos C. Multiple autoimmune syndrome: Clinical, immunological and genotypic characterization. Eur J Intern Med 2023; 116:119-130. [PMID: 37385917 DOI: 10.1016/j.ejim.2023.06.020] [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] [Received: 02/27/2023] [Revised: 06/17/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
INTRODUCTION The existence of subphenotypes common to several autoimmune diseases (AIDs) suggests a shared physiopathology - autoimmune tautology. Multiple Autoimmune Syndrome (MAS) - the coexistence of three or more AIDs in one person-, best illustrates that polyautoimmunity is more than a coincidence. OBJECTIVES Characterize and compare the monoautoimmune and MAS patients. Understand if clustering of AIDs leads to differences in disease severity, autoantibodies expression or genetic polymorphisms that could be markers for polyautoimmunity. METHODS Currently adult patients were selected from unit cohort. MAS was assumed when ≥3 AIDs were present. 343 patients were included after exclusion criteria: having two AIDs or undetermined diagnosis. Clinical and immunological data were collected from medical files. HLA-DRB1 was genotyped by PCR-SSP methodology and PTPN22(rs2476601) polymorphisms by TaqMan Real Time PCR. Data were analysed using Chi-Square, Fisher's exact tests and logistic regression. Odds ratios (OR) and 95% confidence intervals were calculated. RESULTS In comparison with control population: ELEVATED FREQUENCIES: HLA-DRB1*03 in study cohort (OR=3.68,p<0.001) and in monoautoimmune SLE (OR=2.79,p<0.001) and SjS (OR=8.27,p<0.001); HLA-DRB1*15 in monoautoimmune SjS (OR=2.39,p = 0.011); HLA-DRB1*16 in MAS SLE (OR=2.67,p = 0.031); PTPN22_T in all groups except monoautoimmune SjS and triple positive systemic MAS. DIMINISHED FREQUENCIES HLA-DRB1*11 in study cohort (OR=0.57,p = 0.013), in MAS SLE (OR=0.39,p = 0.031) and monoautoimmune SjS (OR=0.10,p = 0.005); HLA-DRB1*13 in study cohort (OR=0.52,p = 0.001) and in monoautoimmune SLE (OR=0.53,p = 0.009) and SjS (OR=0.38,p = 0.031); HLA-DRB1*14 in study cohort (OR=0.32,p = 0.013) and monoautoimmune SLE (OR=0.21,p = 0.021); SLE group: HLA-DRB1*07 frequency was higher in monoautoimmune patients (OR=0.43,p = 0.023). MAS patients had significantly more NPSLE (OR=2.99,p<0.001), subacute cutaneous lesions (OR=2.30,p = 0.037), muscle&tendon (OR=2.00,p = 0.045), and haematological (OR=3.18,p = 0.006) involvement and Raynaud's (OR=2.94,p<0.001). SjS group: MAS patients had more frequently cryoglobulins (OR=2.96,p = 0.030), low complement (OR=2.43,p = 0.030) and Raynaud's (OR=4.38,p<0.001); monoautoimmune patients had more parotid enlargement (OR=0.12,p<0.001). APS group: MAS patients had more non-thrombotic manifestations (OR=4.69,p = 0.020) and Raynaud's (OR=9.12,p<0.001). Triple positive systemic MAS (SLE+SjS+APS) had more frequently severe kidney involvement (OR=11.67,p = 0.021) and CNS thrombosis (OR=4.44,p = 0.009). Anti-U1RNP increased frequency was transversally attributable to MAS. CONCLUSIONS The coexistence of AIDs contributes to a more severe disease course. We confirmed previously established genetic risk and protection factors and suggest a new protective one - HLA-DRB1*14. HLA-DRB1*07 and anti-U1RNP could be markers for mono and polyautoimmunity, respectively; HLA-DRB1*13 could be a predictor for vascular risk in patients with multiple AIDs. PTPN22(rs2476601) polymorphism could be associated with less severe disease.
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Affiliation(s)
- Mariana Fidalgo
- Internal Medicine Resident, Clinical Internship at Unidade de Imunologia Clínica (2), Portugal.
| | - Raquel Faria
- Unidade de Imunologia Clínica, Centro Hospitalar do Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Portugal
| | - Cláudia Carvalho
- Unit for Multidisciplinary Research in Biomedicine, Portugal; Laboratório de Imunogenética, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Portugal
| | | | - Denisa Mendonça
- Departamento de Estudos de Populações, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Portugal; EpiUnit, Instituto de Saúde Pública, Universidade do Porto, Portugal
| | - Fátima Farinha
- Unidade de Imunologia Clínica, Centro Hospitalar do Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Portugal
| | - Berta Martins da Silva
- Unit for Multidisciplinary Research in Biomedicine, Portugal; Laboratório de Imunogenética, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Portugal
| | - Carlos Vasconcelos
- Unidade de Imunologia Clínica, Centro Hospitalar do Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Portugal
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Genetics and epigenetics of primary Sjögren syndrome: implications for future therapies. Nat Rev Rheumatol 2023; 19:288-306. [PMID: 36914790 PMCID: PMC10010657 DOI: 10.1038/s41584-023-00932-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2023] [Indexed: 03/14/2023]
Abstract
In primary Sjögren syndrome (pSS), chronic inflammation of exocrine glands results in tissue destruction and sicca symptoms, primarily of the mouth and eyes. Fatigue, arthralgia and myalgia are also common symptoms, whereas extraglandular manifestations that involve the respiratory, nervous and vascular systems occur in a subset of patients. The disease predominantly affects women, with an estimated female to male ratio of 14 to 1. The aetiology of pSS, however, remains incompletely understood, and effective treatment is lacking. Large-scale genetic and epigenetic investigations have revealed associations between pSS and genes in both innate and adaptive immune pathways. The genetic variants mediate context-dependent effects, and both sex and environmental factors can influence the outcome. As such, genetic and epigenetic studies can provide insight into the dysregulated molecular mechanisms, which in turn might reveal new therapeutic possibilities. This Review discusses the genetic and epigenetic features that have been robustly connected with pSS, putting them into the context of cellular function, carrier sex and environmental challenges. In all, the observations point to several novel opportunities for early detection, treatment development and the pathway towards personalized medicine.
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Gupta S, Li D, Ostrov DA, Nguyen CQ. Epitope Mapping of Pathogenic Autoantigens on Sjögren’s Syndrome-Susceptible Human Leukocyte Antigens Using In Silico Techniques. J Clin Med 2022; 11:jcm11061690. [PMID: 35330015 PMCID: PMC8953074 DOI: 10.3390/jcm11061690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/03/2022] [Accepted: 03/08/2022] [Indexed: 12/17/2022] Open
Abstract
Sjögren’s syndrome (SjS) is characterized by lymphocytic infiltration and the dysfunction of the salivary and lacrimal glands. The autoimmune response is driven by the effector T cells and their cytokines. The activation of the effector helper T cells is mediated by autoantigen presentation by human leukocyte antigen (HLA) class II molecules of antigen-presenting cells. Studies using familial aggregation, animal models, and genome-wide association demonstrate a significant genetic correlation between specific risk HLAs and SjS. One of the key HLA alleles is HLA-DRB1*0301; it is one of the most influential associations with primary SjS, having the highest odds ratio and occurrence across different ethnic groups. The specific autoantigens attributed to SjS remain elusive, especially the specific antigenic epitopes presented by HLA-DRB1*0301. This study applied a high throughput in silico mapping technique to identify antigenic epitopes of known SjS autoantigens presented by high-risk HLAs. Furthermore, we identified specific binding HLA-DRB1*0301 epitopes using structural modeling tools such as Immune Epitope Database and Analysis Resource IEDB, AutoDock Vina, and COOT. By deciphering the critical epitopes of autoantigens presented by HLA-DRB1*0301, we gain a better understanding of the origin of the antigens, determine the T cell receptor function, learn the mechanism of disease progression, and develop therapeutic applications.
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Affiliation(s)
- Shivai Gupta
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA;
| | - Danmeng Li
- Department of Pathology, Immunology & Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (D.L.); (D.A.O.)
| | - David A. Ostrov
- Department of Pathology, Immunology & Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (D.L.); (D.A.O.)
| | - Cuong Q. Nguyen
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA;
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL 32610, USA
- Center of Orphaned Autoimmune Diseases, University of Florida, Gainesville, FL 32611, USA
- Correspondence: ; Tel.: +1-352-294-4180; Fax: +1-352-392-9704
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Teruel M, Barturen G, Martínez-Bueno M, Castellini-Pérez O, Barroso-Gil M, Povedano E, Kerick M, Català-Moll F, Makowska Z, Buttgereit A, Pers JO, Marañón C, Ballestar E, Martin J, Carnero-Montoro E, Alarcón-Riquelme ME. Integrative epigenomics in Sjögren´s syndrome reveals novel pathways and a strong interaction between the HLA, autoantibodies and the interferon signature. Sci Rep 2021; 11:23292. [PMID: 34857786 PMCID: PMC8640069 DOI: 10.1038/s41598-021-01324-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 10/19/2021] [Indexed: 12/24/2022] Open
Abstract
Primary Sjögren's syndrome (SS) is a systemic autoimmune disease characterized by lymphocytic infiltration and damage of exocrine salivary and lacrimal glands. The etiology of SS is complex with environmental triggers and genetic factors involved. By conducting an integrated multi-omics study, we confirmed a vast coordinated hypomethylation and overexpression effects in IFN-related genes, what is known as the IFN signature. Stratified and conditional analyses suggest a strong interaction between SS-associated HLA genetic variation and the presence of Anti-Ro/SSA autoantibodies in driving the IFN epigenetic signature and determining SS. We report a novel epigenetic signature characterized by increased DNA methylation levels in a large number of genes enriched in pathways such as collagen metabolism and extracellular matrix organization. We identified potential new genetic variants associated with SS that might mediate their risk by altering DNA methylation or gene expression patterns, as well as disease-interacting genetic variants that exhibit regulatory function only in the SS population. Our study sheds new light on the interaction between genetics, autoantibody profiles, DNA methylation and gene expression in SS, and contributes to elucidate the genetic architecture of gene regulation in an autoimmune population.
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Affiliation(s)
- María Teruel
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Guillermo Barturen
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Manuel Martínez-Bueno
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Olivia Castellini-Pérez
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Miguel Barroso-Gil
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Elena Povedano
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Martin Kerick
- IPBLN-CSIC, Instituto de Parasitología y Biomedicina López-Neyra, Consejo Superior de Investigaciones Científicas, 18016, Granada, Spain
| | - Francesc Català-Moll
- Epigenetics and Immune Disease Group, Josep Carreras Research Institute (IJC), 08916, Badalona, Barcelona, Spain
- IDIBELL, Bellvitge Biomedical Research Institute 08907 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Zuzanna Makowska
- Pharmaceuticals Division, Bayer Pharma Aktiengesellschaft, Berlin, Germany
| | - Anne Buttgereit
- Pharmaceuticals Division, Bayer Pharma Aktiengesellschaft, Berlin, Germany
| | | | - Concepción Marañón
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain
| | - Esteban Ballestar
- Epigenetics and Immune Disease Group, Josep Carreras Research Institute (IJC), 08916, Badalona, Barcelona, Spain
- IDIBELL, Bellvitge Biomedical Research Institute 08907 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Javier Martin
- IPBLN-CSIC, Instituto de Parasitología y Biomedicina López-Neyra, Consejo Superior de Investigaciones Científicas, 18016, Granada, Spain
| | - Elena Carnero-Montoro
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain.
| | - Marta E Alarcón-Riquelme
- GENYO, Center for Genomics and Oncological Research Pfizer/University of Granada/Andalusian Regional Government, 18016, Granada, Spain.
- Institute for Environmental Medicine, Karolinska Institutet, 171 67, Solna, Sweden.
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Qi X, Wang XQ, Jin L, Gao LX, Guo HF. Uncovering potential single nucleotide polymorphisms, copy number variations and related signaling pathways in primary Sjogren's syndrome. Bioengineered 2021; 12:9313-9331. [PMID: 34723755 PMCID: PMC8809958 DOI: 10.1080/21655979.2021.2000245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Primary Sjogren’s syndrome (pSS) is a complex systemic autoimmune disease, which is difficult to accurately diagnose due to symptom diversity in patients, especially at earlier stages. We tried to find potential single nucleotide polymorphisms (SNPs), copy number variations (CNVs) and related signaling pathways. Genomic DNA was extracted from peripheral blood of 12 individuals (7 individuals from 3 pSS pedigrees and 5 sporadic cases) for whole-exome sequencing (WES) analysis. SNPs and CNVs were identified, followed by functional annotation of genes with SNPs and CNVs. Gene expression profile (involving 64 normal controls and 166 cases) was downloaded from the Gene Expression Omnibus database (GEO) dataset for differentially expression analysis. Sanger sequencing and in vitro validation was used to validate the identified SNPs and differentially expressed genes, respectively. A total of 5 SNPs were identified in both pedigrees and sporadic cases, such as FES, PPM1J, and TRAPPC9. A total of 3402 and 19 CNVs were identified in pedigrees and sporadic cases, respectively. Fifty-one differentially expressed genes were associated with immunity, such as BATF3, LAP3, BATF2, PARP9, and IL15RA. AMPK signaling pathway and cell adhesion molecules (CAMs) were the most significantly enriched signaling pathways of identified SNPs. Identified CNVs were associated with systemic lupus erythematosus, mineral absorption, and HTLV-I infection. IL2-STAT5 signaling, interferon-gamma response, and interferon-alpha response were significantly enriched immune related signaling pathways of identified differentially expressed genes. In conclusion, our study found some potential SNPs, CNVs, and related signaling pathways, which could be useful in understanding the pathological mechanism of pSS.
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Affiliation(s)
- Xuan Qi
- Department of Rheumatism and Immunology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xi-Qin Wang
- Internal Medicine, Yuhua Yunfang Integrated Traditional Chinese and Western Medicine Clinic, Shijiazhuang, Hebei, China
| | - Lu Jin
- Department of Rheumatism and Immunology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Li-Xia Gao
- Department of Rheumatism and Immunology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Hui-Fang Guo
- Department of Rheumatism and Immunology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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Kaieda S, Fujimoto K, Todoroki K, Abe Y, Kusukawa J, Hoshino T, Ida H. Mast cells can produce transforming growth factor β1 and promote tissue fibrosis during the development of Sjögren's syndrome-related sialadenitis. Mod Rheumatol 2021; 32:761-769. [PMID: 34915577 DOI: 10.1093/mr/roab051] [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: 03/01/2021] [Revised: 05/14/2021] [Accepted: 07/29/2021] [Indexed: 11/14/2022]
Abstract
OBJECTIVES This study investigated the associations of mast cells with immune-mediated inflammation and fibrosis in patients with primary Sjögren's syndrome (pSS); it also explored the underlying pathophysiology of pSS-related sialadenitis. METHODS Twenty-two patients with pSS and 10 patients with sicca (control individuals) underwent labial salivary gland biopsies. Sections were subjected to staining and immunofluorescence analyses. HMC-1 human mast cells were cocultured with fibroblasts in vitro; fibroblasts were also grown in HMC-1 conditioned medium. mRNA levels of collagen Type I (Col1a) and transforming growth factor (TGF)β1 were analysed in cultured cells. RESULTS Mast cell numbers in labial salivary glands were significantly greater in patients with pSS than in control individuals. In salivary glands from patients with pSS, mast cell number was significantly correlated with fibrosis extent; moreover, mast cells were located near fibrous tissue and expressed TGFβ1. Col1a and TGFβ1 mRNAs were upregulated in cocultured fibroblasts and HMC-1 cells, respectively. Fibroblasts cultured in HMC-1 conditioned medium exhibited upregulation of Col1a mRNA; this was abrogated by TGFβ1 neutralizing antibodies. CONCLUSIONS Mast cell numbers were elevated in patients with pSS-related sialadenitis; these cells were located near fibroblasts and expressed TGFβ1. TGFβ1 could induce collagen synthesis in fibroblasts, which might contribute to fibrosis.
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Affiliation(s)
- Shinjiro Kaieda
- Department of Medicine, Division of Respirology, Neurology and Rheumatology, Kurume University School of Medicine, Kurume, Japan
| | - Kyoko Fujimoto
- Department of Medicine, Division of Respirology, Neurology and Rheumatology, Kurume University School of Medicine, Kurume, Japan
| | - Keita Todoroki
- Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Japan
| | - Yushi Abe
- Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Japan
| | - Jingo Kusukawa
- Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Japan
| | - Tomoaki Hoshino
- Department of Medicine, Division of Respirology, Neurology and Rheumatology, Kurume University School of Medicine, Kurume, Japan
| | - Hiroaki Ida
- Department of Medicine, Division of Respirology, Neurology and Rheumatology, Kurume University School of Medicine, Kurume, Japan
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Singh BB, Ohm J, Quenum Zanbede FO, Chauhan P, Kroese FGM, Vissink A, Ambrus JL, Mishra BB. Decrease in alpha-1 antiproteinase antitrypsin is observed in primary Sjogren's syndrome condition. Autoimmunity 2020; 53:270-282. [PMID: 32449389 DOI: 10.1080/08916934.2020.1768376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Primary Sjogren's syndrome (pSS) is a systemic autoimmune disease that is characterized by the infiltration of immune cells. Although the loss of salivary gland function is a major manifestation observed in pSS, the factors that could promote these changes in salivary gland tissue in pSS is not yet determined. Herein, we provide evidence that loss of alpha-1 antiproteinase antitrypsin could contribute to the induction of pSS. Alpha-1 antiproteinase antitrypsin belongs to the family of serpin proteins that function as protease inhibitors and protect secretory cells against proteases, especially to elastases that is secreted from lymphocytes. Importantly, expression of alpha-1 antiproteinase antitrypsin was decreased (more than 3-fold), along with an increase in elastase expression, in pSS samples when compared with age-matched non-SS-SICCA patients. Consistent with the human data, loss of alpha-1 antiproteinase antitrypsin, as well as an increase in immune infiltration, was observed in IL14α transgenic mice that exhibit SS like symptoms. Moreover, an age-dependent increase in elastase expression was observed in IL14α transgenic mice along with a decrease in total saliva secretion. Importantly, a 4-fold increase in microRNA132 expression, but not in other microRNAs, and increased DNA methylation in the promoter/noncoding region of serpina gene was observed in pSS, which could be responsible for the inhibition of alpha-1 antiproteinase antitrypsin expression in salivary gland cells of pSS patients. Together, these findings demonstrate that epigenetic regulations that include DNA methylation and microRNAs that could modulate the expression of alpha-1 antiproteinase antitrypsin in salivary glands and could be involved in the onset of pSS.
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Affiliation(s)
- Brij B Singh
- Department of Periodontics, School of Dentistry University of Texas Health Science Center, San Antonio, TX, USA.,Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Joyce Ohm
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Fredice O Quenum Zanbede
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Pooja Chauhan
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Frans G M Kroese
- Department of Rheumatology and Clinical Immunology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Arjan Vissink
- Department of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Julian L Ambrus
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, School of Medicine and Biomedical Sciences, State University of New York, Buffalo, NY, USA
| | - Bibhuti B Mishra
- Department of Periodontics, School of Dentistry University of Texas Health Science Center, San Antonio, TX, USA.,Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, USA
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Nakamura H, Shimizu T, Kawakami A. Role of Viral Infections in the Pathogenesis of Sjögren's Syndrome: Different Characteristics of Epstein-Barr Virus and HTLV-1. J Clin Med 2020; 9:jcm9051459. [PMID: 32414149 PMCID: PMC7290771 DOI: 10.3390/jcm9051459] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 12/12/2022] Open
Abstract
Viruses are possible pathogenic agents in several autoimmune diseases. Sjögren’s syndrome (SS), which involves exocrine dysfunction and the appearance of autoantibodies, shows salivary gland- and lacrimal gland-oriented clinical features. Epstein-Barr virus (EBV) is the most investigated pathogen as a candidate that directly induces the phenotype found in SS. The reactivation of the virus with various stimuli induced a dysregulated form of EBV that has the potential to infect SS-specific B cells and plasma cells that are closely associated with the function of an ectopic lymphoid structure that contains a germinal center (GC) in the salivary glands of individuals with SS. The involvement of human T-cell leukemia virus type 1 (HTLV-1) in SS has been epidemiologically established, but the disease concept of HTLV-1-associated SS remains unexplained due to limited evidence from basic research. Unlike the cell-to-cell contact between lymphocytes, biofilm-like structures are candidates as the mode of HTLV-1 infection of salivary gland epithelial cells (SGECs). HTLV-1 can infect SGECs with enhanced levels of inflammatory cytokines and chemokines that are secreted from SGECs. Regardless of the different targets that viruses have with respect to affinitive lymphocytes, viruses are involved in the formation of pathological alterations with immunological modifications in SS.
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Ben-Eli H, Gomel N, Aframian DJ, Abu-Seir R, Perlman R, Ben-Chetrit E, Mevorach D, Kleinstern G, Paltiel O, Solomon A. SNP variations in IL10, TNFα and TNFAIP3 genes in patients with dry eye syndrome and Sjogren's syndrome. JOURNAL OF INFLAMMATION-LONDON 2019; 16:6. [PMID: 30923465 PMCID: PMC6421669 DOI: 10.1186/s12950-019-0209-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 02/25/2019] [Indexed: 11/10/2022]
Abstract
Background Cytokines are known to be key players in dry eye syndrome (DES) and Sjogren’s syndrome (SS) pathogenesis. In this study we compared single nucleotide polymorphism (SNP) variations in genes encoding cytokine levels among SS and DES patients in Israel. Methods We recruited 180 subjects, 82 with SS and 98 with DES. Using a candidate gene approach and allele-specific PCR technique for genotyping, proportions of risk alleles in Tumor Necrosis Factor α (TNFα) (rs1800629), IinterLeukin-10 (IL-10) (rs1800896) and TNFAIP3 (rs2230926) SNPs were compared between study groups. Results Allelic distribution was found very similar to Caucasian (CEU – Utah residents with Northern and Western European roots) population distributions in these SNPs. While none of the SNPs’ variants were significantly associated with SS or DES in a recessive model, in an additive model the TNFα G risk allele was found higher among SS patients compared to DES (Homozygote-G: 84.2% vs. 70.8%; Heterozygote: 26.9% vs. 11.2%, respectively, p = 0.02). After adjustment for age, gender and ethnicity, these variants weren’t associated with SS. Genetic scoring reveals that SS patients are more likely to present variants of all three SNPs than DES subjects. Conclusions This is the first study evaluating these SNP variations among both patients with DES and patients with SS. We found the allelic distribution in each SNP to be very similar to that found in healthy Caucasian populations presented in the HapMap project. We found the TNFα allele significantly associated with DES for homozygotes, and associated with SS for heterozygotes in the additive model.
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Affiliation(s)
- Hadas Ben-Eli
- 1Braun School of Public Health and Community Medicine, Hadassah-Hebrew University of Jerusalem, POB 12000, 91120 Jerusalem, Israel.,2Department of Ophthalmology, Hadassah-Hebrew University Medical Center, POB 12000, 91120 Jerusalem, Israel.,3Department of Optometry and Vision Science, Hadassah Academic College, Jerusalem, Israel
| | - Nir Gomel
- 4School of Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Doron Jacob Aframian
- 5Department of Oral Medicine, Sedation and Maxillofacial Imaging and Sjogren's Syndrome Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Rania Abu-Seir
- 6Department of Hematology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Riki Perlman
- 6Department of Hematology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Eldad Ben-Chetrit
- 7Unit of Rheumatology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Dror Mevorach
- 8Department of Internal Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Geffen Kleinstern
- 1Braun School of Public Health and Community Medicine, Hadassah-Hebrew University of Jerusalem, POB 12000, 91120 Jerusalem, Israel.,9Department of Health Sciences Research, Mayo Clinic, Rochester, MN USA
| | - Ora Paltiel
- 1Braun School of Public Health and Community Medicine, Hadassah-Hebrew University of Jerusalem, POB 12000, 91120 Jerusalem, Israel.,6Department of Hematology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Abraham Solomon
- 2Department of Ophthalmology, Hadassah-Hebrew University Medical Center, POB 12000, 91120 Jerusalem, Israel
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Abstract
Sjögren's syndrome (pSS) is a complex and heterogeneous disorder characterized by different clinical subsets. Recently, great efforts have been made searching for reliable biomarkers able to ameliorate the diagnostic algorithm and the prognostic stratification of pSS patients and ultimately allowing the scientific community to address some of the unmet needs for the disease. In this review, we have summarized the state of the art of 'traditional' widely acknowledged clinical, serological and histologic biomarkers for pSS with the aim of highlighting their relevance and limitations in clinical practice. We have also explored some of the novel potential biomarkers that have been proposed more recently, potentially able to open new ways in the assessment of the disease.
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Affiliation(s)
- Chiara Baldini
- Rheumatology Unit, Department of Clinical & Experimental Medicine, University of Pisa, 56126, Italy
| | - Francesco Ferro
- Rheumatology Unit, Department of Clinical & Experimental Medicine, University of Pisa, 56126, Italy
| | - Elena Elefante
- Rheumatology Unit, Department of Clinical & Experimental Medicine, University of Pisa, 56126, Italy
| | - Stefano Bombardieri
- Rheumatology Unit, Department of Clinical & Experimental Medicine, University of Pisa, 56126, Italy
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12
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Liu X, Xing H, Gao W, Yu D, Zhao Y, Shi X, Zhang K, Li P, Yu J, Xu W, Shan H, Zhang K, Bao W, Fu X, Yang S, Wang S. A functional variant in the OAS1 gene is associated with Sjögren's syndrome complicated with HBV infection. Sci Rep 2017; 7:17571. [PMID: 29242559 PMCID: PMC5730593 DOI: 10.1038/s41598-017-17931-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 12/04/2017] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) has been suspected to contribute to several autoimmune diseases, including Sjögren's syndrome (SS), although the exact mechanism is unknown. The 2'-5' oligoadenylate synthetase (OAS1) is one of the most important components of the immune system and has significant antiviral functions. We studied a polymorphism rs10774671 of OAS1 gene in Han Chinese descent. The minor allele G was significantly associated with a decreased risk for SS, anti-SSA-positive SS, and anti-SSA-positive SS complicated with HBV infection, which have not been seen in anti-SSA-negative SS and HBcAb-negative SS patients. Gene expression analysis showed that the risk-conferring A allele was correlated with lower expression of p46 and increased expression of p42, p48, and p44. A functional study of enzymatic activities revealed that the p42, p44, and p48 isoforms display a reduced capacity to inhibit HBV replication in HepG2 cells compared to the normal p46 isoform. Our data demonstrated that the functional variant, rs10774671, is associated with HBV infection and anti-SSA antibody-positive SS. The SAS variant switches the primary p46 isoform to three alternatives with decreased capacities to inhibit HBV replication. These data indicated that individuals harboring the risk allele might be susceptible to hepatitis B infection and SS development.
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Affiliation(s)
- Xianjun Liu
- The Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, China
| | - Hongcun Xing
- College of Life Sciences, The University of Jilin, Changchun, China
| | - Wenjing Gao
- The Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, China
- College of Life Sciences, The University of Jilin, Changchun, China
| | - Di Yu
- The Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, China
| | - Yuming Zhao
- College of Life Sciences, The University of Jilin, Changchun, China
| | - Xiaoju Shi
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, China
| | - Kun Zhang
- The Research Center, The Second Hospital of Jilin University, Changchun, China
| | - Pingya Li
- The College of Pharmacy, The University of Jilin, Changchun, China
| | - Jiaao Yu
- Department of Burn Surgery, The First Hospital of Jilin University, Changchun, China
| | - Wei Xu
- Department of Clinical Laboratory, The First Hospital of Jilin University, Changchun, China
| | - Hongli Shan
- Department of Clinical Laboratory, The First Hospital of Jilin University, Changchun, China
| | - Kaiyu Zhang
- Department of infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Wanguo Bao
- Department of infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Xueqi Fu
- College of Life Sciences, The University of Jilin, Changchun, China
| | - Sirui Yang
- Center of Pediatrics, Institute of Pediatrics, The First Hospital of Jilin University, Changchun, China.
| | - Shaofeng Wang
- The Bethune Institute of Epigenetic Medicine, The First Hospital of Jilin University, Changchun, China.
- Center of Pediatrics, Institute of Pediatrics, The First Hospital of Jilin University, Changchun, China.
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13
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Teos LY, Alevizos I. Genetics of Sjögren's syndrome. Clin Immunol 2017; 182:41-47. [PMID: 28476436 PMCID: PMC5660941 DOI: 10.1016/j.clim.2017.04.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/30/2017] [Accepted: 04/30/2017] [Indexed: 12/14/2022]
Abstract
The pathogenesis of Sjögren's syndrome has not been elucidated. There has been evidence that genetics play an important role in the development of this disease from earlier studies. However, till now only a number of genes have been identified to be associated with SS, and these have only a weak or moderate effect. In this review we summarize the findings of the genetics studies and emphasize the need of large multicenter projects that will increase the sample sizes to provide more meaningful associations, as is the case in other common autoimmune diseases.
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Affiliation(s)
- Leyla Y Teos
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Ilias Alevizos
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.
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14
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Kiripolsky J, McCabe LG, Kramer JM. Innate immunity in Sjögren's syndrome. Clin Immunol 2017; 182:4-13. [PMID: 28396235 PMCID: PMC6025757 DOI: 10.1016/j.clim.2017.04.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 12/18/2022]
Abstract
Sjögren's syndrome (SS) is an autoimmune disease of exocrine tissue that primarily affects women. Although patients typically experience xerostomia and xerophthalmia, numerous systemic disease manifestations are seen. Innate immune hyperactivity is integral to many autoimmune diseases, including SS. Results from SS mouse models suggest that innate immune dysregulation drives disease and this is a seminal event in SS pathogenesis. Findings in SS patients corroborate those in mouse models, as innate immune cells and pathways are dysregulated both in exocrine tissue and in peripheral blood. We will review the role of the innate immune system in SS pathogenesis. We will discuss the etiology of SS with an emphasis on innate immune dysfunction. Moreover, we will review the innate cells that mediate inflammation in SS, the pathways implicated in disease, and the potential mechanisms governing their dysregulation. Finally, we will discuss emerging therapeutic approaches to target dysregulated innate immune signaling in SS.
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Affiliation(s)
- Jeremy Kiripolsky
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, United States
| | - Liam G McCabe
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, United States
| | - Jill M Kramer
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, United States; Department of Oral Diagnostic Sciences, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, United States.
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Abstract
PURPOSE OF REVIEW To describe the recent studies on the genetics of systemic lupus erythematosus (SLE) and Sjögren's syndrome. RECENT FINDINGS We overview the most recent findings on the genetic susceptibility of the diseases and provide information on their genetic similarities and differences. SUMMARY SLE and Sjögren's syndrome are two closely related systemic autoimmune diseases that share multiple clinical and molecular aspects, including a significant number of susceptibility genes. Several genome-wide association studies were recently published in different populations that provide a better picture of their molecular mechanisms. It is becoming clear that their genetic architecture is quite well established, but more information is required on expression quantitative trait loci, epigenetic genome-wide analyses, gene × gene interactions and the role of rare variants.
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16
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Cole MB, Quach H, Quach D, Baker A, Taylor KE, Barcellos LF, Criswell LA. Epigenetic Signatures of Salivary Gland Inflammation in Sjögren's Syndrome. Arthritis Rheumatol 2017; 68:2936-2944. [PMID: 27332624 PMCID: PMC5132022 DOI: 10.1002/art.39792] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 06/14/2016] [Indexed: 01/26/2023]
Abstract
Objective Sjögren's syndrome (SS) is a complex multisystem autoimmune disease that results in progressive destruction of the exocrine glands. The purpose of this study was to characterize epigenetic changes in affected gland tissue and describe the relationship of these changes to known inflammatory processes. Methods A genome‐wide DNA methylation study was performed on human labial salivary gland (LSG) biopsy samples obtained from 28 female members of the Sjögren's International Collaborative Clinical Alliance (SICCA) Registry. Gland tissue was methylotyped using the Illumina HumanMethylation450 BeadChip platform, followed by rigorous probe‐filtering and data‐normalization procedures. Results A genome‐wide case–control study of 26 of the 28 subjects revealed 7,820 differentially methylated positions (DMPs) associated with disease status, including 5,699 hypomethylated and 2,121 hypermethylated DMPs. Further analysis identified 57 genes that were enriched for DMPs in their respective promoters; many are involved in immune response, including 2 previously established SS genetic risk loci. Bioinformatics analysis highlighted an extended region of hypomethylation surrounding PSMB8 and TAP1, consistent with an increased frequency of antigen‐presenting cells in LSG tissue from the SS cases. Transcription factor motif enrichment analysis revealed the specific nature of the genome‐wide methylation differences, demonstrating colocalization of SS‐associated DMPs with stress‐ and immune response–related motifs. Conclusion Our findings underscore the utility of CpG methylotyping as an independent probe of active disease processes in SS, offering unique insights into the composition of disease‐relevant tissue. Methylation profiling implicated several genes and pathways previously thought to be involved in disease‐related processes, as well as a number of new candidates.
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Affiliation(s)
| | | | | | | | - Kimberly E Taylor
- Russell/Engleman Rheumatology Research Center, University of California, San Francisco
| | | | - Lindsey A Criswell
- Russell/Engleman Rheumatology Research Center, University of California, San Francisco
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17
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Taylor KE, Wong Q, Levine DM, McHugh C, Laurie C, Doheny K, Lam MY, Baer AN, Challacombe S, Lanfranchi H, Schiødt M, Srinivasan M, Umehara H, Vivino FB, Zhao Y, Shiboski SC, Daniels TE, Greenspan JS, Shiboski CH, Criswell LA. Genome-Wide Association Analysis Reveals Genetic Heterogeneity of Sjögren's Syndrome According to Ancestry. Arthritis Rheumatol 2017; 69:1294-1305. [PMID: 28076899 PMCID: PMC5449251 DOI: 10.1002/art.40040] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 01/05/2017] [Indexed: 01/10/2023]
Abstract
OBJECTIVE The Sjögren's International Collaborative Clinical Alliance (SICCA) is an international data registry and biorepository derived from a multisite observational study of participants in whom genotyping was performed on the Omni2.5M platform and who had undergone deep phenotyping using common protocol-directed methods. The aim of this study was to examine the genetic etiology of Sjögren's syndrome (SS) across ancestry and disease subsets. METHODS We performed genome-wide association study analyses using SICCA subjects and external controls obtained from dbGaP data sets, one using all participants (1,405 cases, 1,622 SICCA controls, and 3,125 external controls), one using European participants (585, 966, and 580, respectively), and one using Asian participants (460, 224, and 901, respectively) with ancestry adjustments via principal components analyses. We also investigated whether subphenotype distributions differ by ethnicity, and whether this contributes to the heterogeneity of genetic associations. RESULTS We observed significant associations in established regions of the major histocompatibility complex (MHC), IRF5, and STAT4 (P = 3 × 10-42 , P = 3 × 10-14 , and P = 9 × 10-10 , respectively), and several novel suggestive regions (those with 2 or more associations at P < 1 × 10-5 ). Two regions have been previously implicated in autoimmune disease: KLRG1 (P = 6 × 10-7 [Asian cluster]) and SH2D2A (P = 2 × 10-6 [all participants]). We observed striking differences between the associations in Europeans and Asians, with high heterogeneity especially in the MHC; representative single-nucleotide polymorphisms from established and suggestive regions had highly significant differences in the allele frequencies in the study populations. We showed that SSA/SSB autoantibody production and the labial salivary gland focus score criteria were associated with the first worldwide principal component, indicative of higher non-European ancestry (P = 4 × 10-15 and P = 4 × 10-5 , respectively), but that subphenotype differences did not explain most of the ancestry differences in genetic associations. CONCLUSION Genetic associations with SS differ markedly according to ancestry; however, this is not explained by differences in subphenotypes.
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Affiliation(s)
| | | | | | | | | | | | - Mi Y Lam
- University of California, San Francisco
| | - Alan N Baer
- Johns Hopkins University, Baltimore, Maryland
| | - Stephen Challacombe
- Guy's, King's, and St. Thomas' Dental Institute, King's College London, London, UK
| | | | | | | | | | | | - Yan Zhao
- Peking Union Medical College Hospital, Beijing, China
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18
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Is it Sjögren's syndrome or burning mouth syndrome? Distinct pathoses with similar oral symptoms. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 123:482-495. [PMID: 28283095 DOI: 10.1016/j.oooo.2017.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 01/10/2017] [Accepted: 01/12/2017] [Indexed: 12/17/2022]
Abstract
Sjögren's syndrome (SS) and burning mouth syndrome (BMS) typically occur in postmenopausal women. Although these conditions have significantly different etiopathogeneses, patients with SS or BMS often present with analogous oral complaints. The similarities between the two conditions have led to considerable confusion on the part of medical and dental practitioners, and those with BMS or SS often wait years to receive a diagnosis. Therefore, it is imperative for clinicians to understand the characteristic subjective and objective features of each disease and how these can be used to distinguish them. This review will discuss the proposed etiology, clinical manifestations, histopathology, diagnostic criteria, and patient management of SS and BMS. We also identify key differences between the two pathoses that aid in establishing the correct diagnosis. Recognition of the defining features of each condition will lead to reduced time to diagnosis and improved patient management for these poorly understood conditions.
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19
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Song IW, Chen HC, Lin YF, Yang JH, Chang CC, Chou CT, Lee MTM, Chou YC, Chen CH, Chen YT, Chen CH, Wu JY. Identification of susceptibility gene associated with female primary Sjögren’s syndrome in Han Chinese by genome-wide association study. Hum Genet 2016; 135:1287-1294. [DOI: 10.1007/s00439-016-1716-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 07/20/2016] [Indexed: 11/29/2022]
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20
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Abstract
The genes associated with Sjögren syndrome (SS) can be assigned to the NF-kB pathway, the IFN signaling pathway, lymphocyte signaling, and antigen presentation. The frequencies of risk variants show they are common with modest genetic effects. The strongest genetic association outside the human leukocyte antigen region is in IRF5, a gene relevant in the IFN signaling pathway and for B cell differentiation. Although no association has been found with the NF-kB gene itself, associations in TNFAIP3 and TNIP1 (both genome-wide significant), VCAM1 and IRAK1BP (both suggestive), point to genetic explanations for dysregulation of the NF-kB pathway in SS.
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Affiliation(s)
- Tove Ragna Reksten
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, 825 Northeast 13th Street, Oklahoma City, OK 73104, USA; Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, The Laboratory Building, Haukeland University Hospital, Jonas Lies vei 87, N-5021 Bergen, Norway
| | - Christopher J Lessard
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, 825 Northeast 13th Street, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Boulevard, MBSB 451, Oklahoma City, OK 73104, USA
| | - Kathy L Sivils
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, 825 Northeast 13th Street, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Boulevard, MBSB 451, Oklahoma City, OK 73104, USA.
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21
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Imgenberg-Kreuz J, Sandling JK, Almlöf JC, Nordlund J, Signér L, Norheim KB, Omdal R, Rönnblom L, Eloranta ML, Syvänen AC, Nordmark G. Genome-wide DNA methylation analysis in multiple tissues in primary Sjögren's syndrome reveals regulatory effects at interferon-induced genes. Ann Rheum Dis 2016; 75:2029-2036. [PMID: 26857698 PMCID: PMC5099203 DOI: 10.1136/annrheumdis-2015-208659] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 01/16/2016] [Indexed: 01/08/2023]
Abstract
Objectives Increasing evidence suggests an epigenetic contribution to the pathogenesis of autoimmune diseases, including primary Sjögren's Syndrome (pSS). The aim of this study was to investigate the role of DNA methylation in pSS by analysing multiple tissues from patients and controls. Methods Genome-wide DNA methylation profiles were generated using HumanMethylation450K BeadChips for whole blood, CD19+ B cells and minor salivary gland biopsies. Gene expression was analysed in CD19+ B cells by RNA-sequencing. Analysis of genetic regulatory effects on DNA methylation at known pSS risk loci was performed. Results We identified prominent hypomethylation of interferon (IFN)-regulated genes in whole blood and CD19+ B cells, including at the genes MX1, IFI44L and PARP9, replicating previous reports in pSS, as well as identifying a large number of novel associations. Enrichment for genomic overlap with histone marks for enhancer and promoter regions was observed. We showed for the first time that hypomethylation of IFN-regulated genes in pSS B cells was associated with their increased expression. In minor salivary gland biopsies we observed hypomethylation of the IFN-induced gene OAS2. Pathway and disease analysis resulted in enrichment of antigen presentation, IFN signalling and lymphoproliferative disorders. Evidence for genetic control of methylation levels at known pSS risk loci was observed. Conclusions Our study highlights the role of epigenetic regulation of IFN-induced genes in pSS where replication is needed for novel findings. The association with altered gene expression suggests a functional mechanism for differentially methylated CpG sites in pSS aetiology.
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Affiliation(s)
- Juliana Imgenberg-Kreuz
- Molecular Medicine and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Johanna K Sandling
- Molecular Medicine and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden Rheumatology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Jonas Carlsson Almlöf
- Molecular Medicine and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Jessica Nordlund
- Molecular Medicine and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Linnea Signér
- Rheumatology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Katrine Braekke Norheim
- Clinical Immunology Unit, Department of Internal Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Roald Omdal
- Clinical Immunology Unit, Department of Internal Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Lars Rönnblom
- Rheumatology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Maija-Leena Eloranta
- Rheumatology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Ann-Christine Syvänen
- Molecular Medicine and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Gunnel Nordmark
- Rheumatology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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Hallak JA, Tibrewal S, Mohindra N, Gao X, Jain S. Single Nucleotide Polymorphisms in the BDNF, VDR, and DNASE 1 Genes in Dry Eye Disease Patients: A Case-Control Study. Invest Ophthalmol Vis Sci 2016; 56:5990-6. [PMID: 26393465 DOI: 10.1167/iovs.15-17036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
PURPOSE To identify single nucleotide polymorphisms (SNPs) in the brain-derived neurotrophic factor (BDNF), vitamin D receptor (VDR), and DNASE1 genes that may be associated with dry eye disease (DED), and determine whether this association varies by the presence of depression. METHODS A case-control study was performed with 64 DED cases and 51 controls. We collected 2 mL of saliva following a routine eye exam. Genotyping was performed using both custom and predesigned TaqMan SNP genotyping assays for 12 hypothesized SNPs. Genotype and allele frequencies of cases and controls were evaluated. Odds ratios were calculated for allele frequencies. Stratified analysis was performed to determine if the association between SNPs and DED varied by depression status. RESULTS A total of 18% of cases had the minor allele A of Val66Met (rs6265) SNP in the BDNF gene compared with 9% of the controls (P = 0.05). Odds ratio was 2.22. Two SNPs (Fokl-rs2228570 and Apal-rs7975232) in the VDR genes also varied between DED cases and controls. Cases were 1.72 and 1.66 times more likely to have the minor allele A in rs2228570 and rs7975232, respectively, than controls (P = 0.06 for both). While not statistically significant, among patients with depression, DED cases were 3.93 times more likely to have the minor allele A of the Val66Met SNP compared to controls. CONCLUSIONS This pilot study showed that Val66Met in the BDNF gene and two SNPs, Fokl and Apal, in the VDR gene may potentially be associated with DED. Additionally, the association between DED and Val66Met may vary by depression status.
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Affiliation(s)
- Joelle A Hallak
- Corneal Neurobiology Laboratory Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States 2Quantitative Scientific Solutions, LLC, Arlington, Virginia, United States
| | - Sapna Tibrewal
- Corneal Neurobiology Laboratory Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States
| | - Neil Mohindra
- Corneal Neurobiology Laboratory Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States
| | - Xiaoyi Gao
- Quantitative Ocular Genomics Laboratory, Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States
| | - Sandeep Jain
- Corneal Neurobiology Laboratory Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States
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Network-assisted analysis of primary Sjögren's syndrome GWAS data in Han Chinese. Sci Rep 2015; 5:18855. [PMID: 26686423 PMCID: PMC4685393 DOI: 10.1038/srep18855] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 11/05/2015] [Indexed: 12/23/2022] Open
Abstract
Primary Sjögren's syndrome (pSS) is a complex autoimmune disorder. So far, genetic research in pSS has lagged far behind and the underlying biological mechanism is unclear. Further exploring existing genome-wide association study (GWAS) data is urgently expected to uncover disease-related gene combination patterns. Herein, we conducted a network-based analysis by integrating pSS GWAS in Han Chinese with a protein-protein interactions network to identify pSS candidate genes. After module detection and evaluation, 8 dense modules covering 40 genes were obtained for further functional annotation. Additional 31 MHC genes with significant gene-level P-values (sigMHC-gene) were also remained. The combined module genes and sigMHC-genes, a total of 71 genes, were denoted as pSS candidate genes. Of these pSS candidates, 14 genes had been reported to be associated with any of pSS, RA, and SLE, including STAT4, GTF2I, HLA-DPB1, HLA-DRB1, PTTG1, HLA-DQB1, MBL2, TAP2, CFLAR, NFKBIE, HLA-DRA, APOM, HLA-DQA2 and NOTCH4. This is the first report of the network-assisted analysis for pSS GWAS data to explore combined gene patterns associated with pSS. Our study suggests that network-assisted analysis is a useful approach to gaining further insights into the biology of associated genes and providing important clues for future research into pSS etiology.
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Carvalho CN, do Carmo RF, Duarte ALP, Carvalho AAT, Leão JC, Gueiros LA. IL-17A and IL-17F polymorphisms in rheumatoid arthritis and Sjögren’s syndrome. Clin Oral Investig 2015; 20:495-502. [DOI: 10.1007/s00784-015-1540-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 07/20/2015] [Indexed: 12/27/2022]
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25
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Serologic profile and clinical markers of Sjögren syndrome in patients with rheumatoid arthritis. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 119:628-35. [DOI: 10.1016/j.oooo.2015.02.479] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 02/12/2015] [Accepted: 02/21/2015] [Indexed: 11/23/2022]
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Plavsic A, Miskovic R, Bolpacic J, Šuštran B, Peric-Popadic A, Bogic M. Sjögren's Syndrome and Silicosis - a Case Report. Open Access Maced J Med Sci 2015; 3:326-30. [PMID: 27275245 PMCID: PMC4877877 DOI: 10.3889/oamjms.2015.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 04/15/2015] [Accepted: 04/16/2015] [Indexed: 12/31/2022] Open
Abstract
Sjögren’s syndrome is an autoimmune disease of unknown etiology where immune response to self-antigens is believed to result from interactions between genetic and environmental factors. We describe the case of a patient who has been diagnosed with Sjögren’s syndrome based on typical clinical and immunological parameters. The clinical picture was dominated by the respiratory symptoms, and radiographic and multislice computed tomography examination of the chest showed certain changes characteristic of pneumoconiosis. Given that the patient has worked in a foundry where he has been exposed to the silica dust, he was subject to examination by occupational health specialists under the suspicion of lung silicosis, who confirmed the silicosis. This case report points to the possible connection between a professional exposure to silica and Sjögren’s syndrome. Occupational exposure to silica is a possible risk factor for the development of autoimmune diseases, and in the evaluation of patients with connective tissue diseases it is important to consider work-related history.
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Affiliation(s)
- Aleksandra Plavsic
- Clinical Center of Serbia, Clinic for Allergology and Immunology, Belgrade, Serbia
| | - Rada Miskovic
- Clinical Center of Serbia, Clinic for Allergology and Immunology, Belgrade, Serbia
| | - Jasna Bolpacic
- Clinical Center of Serbia, Clinic for Allergology and Immunology, Belgrade, Serbia
| | - Branka Šuštran
- Serbian Institute for Occupational Health "Dr Dragomir Karajović", Belgrade, Serbia
| | | | - Mirjana Bogic
- Clinical Center of Serbia, Clinic for Allergology and Immunology, Belgrade, Serbia
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Johnsen SJ, Berget E, Jonsson MV, Helgeland L, Omdal R, Jonsson R. Evaluation of Germinal Center-like Structures and B Cell Clonality in Patients with Primary Sjögren Syndrome with and without Lymphoma. J Rheumatol 2014; 41:2214-22. [DOI: 10.3899/jrheum.131527] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Objective.Germinal center (GC)-like structures have previously been observed in minor salivary glands (MSG) of patients with primary Sjögren syndrome (pSS). The aim of our study was to explore the prevalence and features of GC-like structures and B cell clonality in patients with pSS with and without lymphoma.Methods.Based on a nationwide survey in Norway, we included 21 patients with pSS and with a concomitant lymphoma from whom MSG and/or lymphoma biopsies were available. Tonsil biopsies and MSG from 28 patients with pSS without lymphoma were used as controls. The presence of GC-like structures was investigated with H&E staining and double staining for CD21/IgD and CD38/IgD. B cell clonality in MSG and tumors were investigated with analysis of immunoglobulin gene rearrangements.Results.H&E labeling of MSG revealed GC-like structures in 17/40 (43%) of the patients: 4/12 (33%) with and 13/28 (46%) without lymphoma. Staining for CD21/CD38/IgD demonstrated CD21+ networks in 27/40 (68%) of the patients. CD21+/CD38– infiltrates were seen in 25/40 (63%) of the patients, and 16 of these were IgD+ within the infiltrate. Five percent (2/40) of the patients presented with CD21+/CD38+ infiltrates resembling tonsillar GC. Monoclonal B cell infiltration in MSG was present in 5/12 patients (42%) with and 5/28 patients (18%) without lymphoma (p = 0.12). In 2/10 (20%) of cases where both MSG and lymphoma biopsies were available, identical clonal rearrangements were detected.Conclusion.GC-like structures seen in H&E-stained MSG may represent various subtypes of CD21+ infiltrates. We were unable to detect a clear association between cellular infiltrates, B cell clonality, and lymphoma development.
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Nannini V. Metabolic and autoimmune syndromes. Atlas Oral Maxillofac Surg Clin North Am 2014; 22:123-34. [PMID: 25171994 DOI: 10.1016/j.cxom.2014.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Victor Nannini
- Private Practice, Long Island Oral and Maxillofacial Surgery, P.C., 134 Mineola Boulevard, Mineola, New York 11501, USA; Division of Oral and Maxillofacial Surgery, Nassau University Medical Center, 2201 Hempstead Turnpike, East Meadow, New York 11554, USA.
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Qin B, Wang J, Yang Z, Yang M, Ma N, Huang F, Zhong R. Epidemiology of primary Sjögren's syndrome: a systematic review and meta-analysis. Ann Rheum Dis 2014; 74:1983-9. [PMID: 24938285 DOI: 10.1136/annrheumdis-2014-205375] [Citation(s) in RCA: 437] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 05/25/2014] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Epidemiological studies of primary Sjögren's syndrome (pSS) are crucial for describing the burden to society and the public medical system and for shedding light on aetiology. Previous reports of the epidemiology of pSS show variable outcomes. We conducted a systematic review of the epidemiology of pSS to assess the prevalence rates (PRs) and incidence rates (IRs), and to investigate possible geographic variations in pSS. METHODS A systematic literature search of PubMed and Embase (updated to 22 October 2013) was performed to identify all published reports on the epidemiology of pSS. The incidence and prevalence rates of pSS were summarised with IRs or PRs and 95% CIs. RESULTS The literature search yielded 1880 related citations. Only 21 fulfilled the inclusion criteria. According to a random-effects model, the pooled IR for pSS was 6.92 (95% CI 4.98 to 8.86) per 100 000 person-years. The overall PR was 60.82 (95% CI 43.69 to 77.94) cases per 100 000 inhabitants with a slightly lower estimate of Baodong Qin is BDQ, Jiaqi Wang is JQW, Zaixing Yang is ZXY, Renqian Zhong is RQZ. 43.03 (25.74 to 60.31) cases per 100 000 inhabitants when only considering population-based studies. The female/male ratio in incidence data was 9.15 (95% CI 3.35 to 13.18). The female/male ratio in prevalence data was 10.72 (95% CI 7.35 to 15.62). The overall age of pSS patients was 56.16 years (95% CI 52.54 to 59.78). CONCLUSIONS Incidence and prevalence rates of pSS vary widely around the world. The results help us better understand the global epidemiology of pSS. Large population-based studies combining meticulous case-finding and case-ascertainment strategies are needed.
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Affiliation(s)
- Baodong Qin
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jiaqi Wang
- Department of Stomatology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zaixing Yang
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Min Yang
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Ning Ma
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China Department of Laboratory Diagnostics, 85 Hospital Of People's Liberation Army, Shanghai, China
| | - Fenglou Huang
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China Naval Convalescent Department, Hangzhou Sanatorium, Nanjing Military District, Hangzhou, Zhejiang, China
| | - Renqian Zhong
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
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Berrih-Aknin S. Myasthenia Gravis: paradox versus paradigm in autoimmunity. J Autoimmun 2014; 52:1-28. [PMID: 24934596 DOI: 10.1016/j.jaut.2014.05.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 05/07/2014] [Indexed: 12/12/2022]
Abstract
Myasthenia Gravis (MG) is a paradigm of organ-specific autoimmune disease (AID). It is mediated by antibodies that target the neuromuscular junction. The purpose of this review is to place MG in the general context of autoimmunity, to summarize the common mechanisms between MG and other AIDs, and to describe the specific mechanisms of MG. We have chosen the most common organ-specific AIDs to compare with MG: type 1 diabetes mellitus (T1DM), autoimmune thyroid diseases (AITD), multiple sclerosis (MS), some systemic AIDs (systemic lupus erythematous (SLE), rheumatoid arthritis (RA), Sjogren's syndrome (SS)), as well as inflammatory diseases of the gut and liver (celiac disease (CeD), Crohn's disease (CD), and primary biliary cirrhosis (PBC)). Several features are similar between all AIDs, suggesting that common pathogenic mechanisms lead to their development. In this review, we address the predisposing factors (genetic, epigenetic, hormones, vitamin D, microbiota), the triggering components (infections, drugs) and their interactions with the immune system [1,2]. The dysregulation of the immune system is detailed and includes the role of B cells, Treg cells, Th17 and cytokines. We particularly focused on the role of TNF-α and interferon type I whose role in MG is very analogous to that in several other AIDS. The implication of AIRE, a key factor in central tolerance is also discussed. Finally, if MG is a prototype of AIDS, it has a clear specificity compared to the other AIDS, by the fact that the target organ, the muscle, is not the site of immune infiltration and B cell expansion, but exclusively that of antibody-mediated pathogenic mechanisms. By contrast, the thymus in the early onset subtype frequently undergoes tissue remodeling, resulting in the development of ectopic germinal centers surrounded by high endothelial venules (HEV), as observed in the target organs of many other AIDs.
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Affiliation(s)
- Sonia Berrih-Aknin
- Sorbonne Universités, UPMC Univ Paris 06, Myology Research Center UM76, F-75013 Paris, France; INSERM U974, F-75013 Paris, France; CNRS FRE 3617, F-75013 Paris, France; Institute of Myology, F-75013 Paris, France.
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Infection and autoimmunity in Sjogren's syndrome: A clinical study and comprehensive review. J Autoimmun 2014; 51:17-22. [DOI: 10.1016/j.jaut.2014.02.008] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Accepted: 02/20/2014] [Indexed: 12/22/2022]
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Sjögren's syndrome: A forty-year scientific journey. J Autoimmun 2014; 51:1-9. [DOI: 10.1016/j.jaut.2014.01.001] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 01/01/2014] [Indexed: 12/16/2022]
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Affiliation(s)
- Won-Seok Lee
- Division of Rheumatology, Department of Internal Medicine, Chonbuk National University Medical School and Research Institute of Clinical Medicine of Chonbuk National University Hospital-Chonbuk National University, Deokjin-gu, Jeonju, South Korea
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Okada Y, Nakamura T, Ichii O, Otsuka S, Kon Y. Pathogenetic role of an autoimmune susceptibility locus derived from MRL/MpJ strain chromosome 1 in chronic pancreas inflammation. Lupus 2014; 23:1112-23. [PMID: 24847041 DOI: 10.1177/0961203314536249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We examined the role of Mag, an autoimmune susceptibility locus encoded by the telomeric region of MRL/MpJ mouse chromosome 1, in the pathogenesis of autoimmune exocrinopathy. At nine to 12 months of age, strain-specific differences were observed in the pancreas of the animals. B- and T-cell-containing periductal/perivascular cell infiltrations in the pancreases of MRL/MpJ and B6.MRLc1 congenic C57BL/6-background Mag-carrying strains were more severe than were those of C57BL/6. Pancreatic periductal/perivascular cell infiltration was observed frequently in A/J, AKR/N, B6.MRLc1, C57BL/6, and MRL/MpJ, moderately in DBA/1 and DBA/2, and rarely in BALB/c and C3H/He strains. Females tended to have greater pancreatic periductal/perivascular cell infiltration than males. C57BL/6 mice possessed defined borders between cell infiltrations and acini, but borders were indistinct in MRL/MpJ and B6.MRLc1 mice. We attributed this to the invasion of inflammatory cells between each acinus and the disruption of acinar cells around cell infiltrations in the latter strains. No strain-specific differences were observed in the appearance of fibrotic lesions and high endothelial venules in the cell infiltrates. The levels of serum anti-dsDNA antibodies and amylase, and mRNA expression of tumor necrosis factor-α and Fc gamma receptor III (encoded on Mag) in the pancreases, were elevated in MRL/MpJ- and B6.MRLc1-strain mice relative to C57BL/6. These results emphasized the crucial roles of Mag in the molecular and genetic pathogenesis of autoimmune-mediated pancreatitis.
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Affiliation(s)
- Y Okada
- Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - T Nakamura
- Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan Section of Biological Safety Research, Chitose Laboratory, Japan Food Research Laboratories, Chitose, Japan
| | - O Ichii
- Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - S Otsuka
- Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Y Kon
- Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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Colafrancesco S, Perricone C, Priori R, Valesini G, Shoenfeld Y. Sjögren's syndrome: another facet of the autoimmune/inflammatory syndrome induced by adjuvants (ASIA). J Autoimmun 2014; 51:10-6. [PMID: 24774584 DOI: 10.1016/j.jaut.2014.03.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 03/21/2014] [Indexed: 01/26/2023]
Abstract
Recently, a new syndrome, namely the "Autoimmune/inflammatory syndrome induced by adjuvants" (ASIA) has been defined. In this syndrome different conditions characterized by common signs and symptoms and induced by the presence of an adjuvant are included. The adjuvant is a substance capable of boosting the immune response and of acting as a trigger in the development of autoimmune diseases. Post-vaccination autoimmune phenomena represent a major issue of ASIA. Indeed, despite vaccines represent a mainstay in the improvement of human health, several of these have been implicated as a potential trigger for autoimmune diseases. Sjogren's Syndrome (SjS) is a systemic chronic autoimmune inflammatory disease characterized by the presence of an inflammatory involvement of exocrine glands accompanied by systemic manifestations. Own to the straight association between infectious agents exposure (mainly viruses) and sicca syndrome development, the possible link between vaccine and SjS is not surprising. Indeed, a few cases of SjS following vaccine delivery have been reported. At the same extent, the induction of SjS following silicone exposure has been described too. Thus, the aim of this review was to focus on SjS and its possible development following vaccine or silicone exposure in order to define another possible facet of the ASIA syndrome.
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Affiliation(s)
- S Colafrancesco
- Department of Internal Medicine and Medical Specialities, Rheumatology Unit, Sapienza University of Rome, Italy; The Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel
| | - C Perricone
- Department of Internal Medicine and Medical Specialities, Rheumatology Unit, Sapienza University of Rome, Italy; The Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel
| | - R Priori
- Department of Internal Medicine and Medical Specialities, Rheumatology Unit, Sapienza University of Rome, Italy
| | - G Valesini
- Department of Internal Medicine and Medical Specialities, Rheumatology Unit, Sapienza University of Rome, Italy
| | - Y Shoenfeld
- The Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel; Incumbent of the Laura Schwarz-Kipp Chair for Research of Autoimmune Diseases, Sackler Faculty of Medicine, Tel Aviv University, Israel.
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36
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Guthridge JM, Lu R, Sun H, Sun C, Wiley GB, Dominguez N, Macwana SR, Lessard CJ, Kim-Howard X, Cobb BL, Kaufman KM, Kelly JA, Langefeld CD, Adler AJ, Harley ITW, Merrill JT, Gilkeson GS, Kamen DL, Niewold TB, Brown EE, Edberg JC, Petri MA, Ramsey-Goldman R, Reveille JD, Vilá LM, Kimberly RP, Freedman BI, Stevens AM, Boackle SA, Criswell LA, Vyse TJ, Behrens TW, Jacob CO, Alarcón-Riquelme ME, Sivils KL, Choi J, Joo YB, Bang SY, Lee HS, Bae SC, Shen N, Qian X, Tsao BP, Scofield RH, Harley JB, Webb CF, Wakeland EK, James JA, Nath SK, Graham RR, Gaffney PM. Two functional lupus-associated BLK promoter variants control cell-type- and developmental-stage-specific transcription. Am J Hum Genet 2014; 94:586-98. [PMID: 24702955 DOI: 10.1016/j.ajhg.2014.03.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 03/12/2014] [Indexed: 11/15/2022] Open
Abstract
Efforts to identify lupus-associated causal variants in the FAM167A/BLK locus on 8p21 are hampered by highly associated noncausal variants. In this report, we used a trans-population mapping and sequencing strategy to identify a common variant (rs922483) in the proximal BLK promoter and a tri-allelic variant (rs1382568) in the upstream alternative BLK promoter as putative causal variants for association with systemic lupus erythematosus. The risk allele (T) at rs922483 reduced proximal promoter activity and modulated alternative promoter usage. Allelic differences at rs1382568 resulted in altered promoter activity in B progenitor cell lines. Thus, our results demonstrated that both lupus-associated functional variants contribute to the autoimmune disease association by modulating transcription of BLK in B cells and thus potentially altering immune responses.
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Affiliation(s)
- Joel M Guthridge
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA.
| | - Rufei Lu
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Harry Sun
- Immune and Tissue Growth and Repair and Human Genetics Department, Genentech, South San Francisco, CA 94080, USA
| | - Celi Sun
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Graham B Wiley
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Nicolas Dominguez
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Susan R Macwana
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Christopher J Lessard
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Xana Kim-Howard
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Beth L Cobb
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Kenneth M Kaufman
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Cincinnati Veterans Affairs Medical Center, Cincinnati, OH 45220, USA
| | - Jennifer A Kelly
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Carl D Langefeld
- Department of Biostatistical Sciences, Wake Forest University, Winston-Salem, NC 27106, USA
| | - Adam J Adler
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Isaac T W Harley
- Division of Molecular Immunology and Graduate Program in Immunobiology, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, USA
| | - Joan T Merrill
- Department of Clinical Pharmacology, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Gary S Gilkeson
- Department of Medicine, Division of Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Diane L Kamen
- Department of Medicine, Division of Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Timothy B Niewold
- Division of Rheumatology and Department of Immunology, Mayo Clinic, Rochester, MN 55902, USA
| | - Elizabeth E Brown
- Department of Epidemiology, University of Alabama-Birmingham, Birmingham, AL 35294, USA; Department of Medicine, University of Alabama-Birmingham, Birmingham, AL 35294, USA
| | - Jeffery C Edberg
- Division of Clinical Immunology and Rheumatology, University of Alabama-Birmingham School of Medicine, Birmingham, AL 35294, USA
| | - Michelle A Petri
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Rosalind Ramsey-Goldman
- Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - John D Reveille
- Rheumatology and Clinical Immunogenetics, University of Texas Health Science Center at Houston, Houston, TX.77030, USA
| | - Luis M Vilá
- Department of Medicine, Division of Rheumatology, University of Puerto Rico Medical Sciences Campus, San Juan 00921, Puerto Rico
| | - Robert P Kimberly
- Division of Clinical Immunology and Rheumatology, University of Alabama-Birmingham School of Medicine, Birmingham, AL 35294, USA
| | - Barry I Freedman
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27106, USA
| | - Anne M Stevens
- Division of Rheumatology, Department of Pediatrics, University of Washington Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Susan A Boackle
- Division of Rheumatology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Lindsey A Criswell
- Rosalind Russell Medical Research Center for Arthritis, University of California San Francisco, San Francisco, CA 94143, USA
| | - Tim J Vyse
- Division of Medicine, Imperial College of London, London SW7 2AZ, UK
| | - Timothy W Behrens
- Immune and Tissue Growth and Repair and Human Genetics Department, Genentech, South San Francisco, CA 94080, USA
| | - Chaim O Jacob
- Department of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Marta E Alarcón-Riquelme
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA; Centro de Genómica e Investigaciones Oncológicas (GENYO). Pfizer-Universidad de Granada-Junta de Andalucía, Granada 18016, Spain
| | - Kathy L Sivils
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Jiyoung Choi
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-791, Korea
| | - Young Bin Joo
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-791, Korea
| | - So-Young Bang
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-791, Korea
| | - Hye-Soon Lee
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-791, Korea
| | - Sang-Cheol Bae
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-791, Korea
| | - Nan Shen
- Molecular Rheumatology Laboratory, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xiaoxia Qian
- Molecular Rheumatology Laboratory, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Betty P Tsao
- Department of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - R Hal Scofield
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA; Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73105, USA; United States Department of Veterans Affairs Medical Center, Oklahoma City, OK 73105, USA
| | - John B Harley
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Cincinnati Veterans Affairs Medical Center, Cincinnati, OH 45220, USA
| | - Carol F Webb
- Immunobiology and Cancer Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA; Department of Cell Biology and Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Edward K Wakeland
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75235, USA
| | - Judith A James
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73105, USA
| | - Swapan K Nath
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Robert R Graham
- Immune and Tissue Growth and Repair and Human Genetics Department, Genentech, South San Francisco, CA 94080, USA
| | - Patrick M Gaffney
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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Abstract
The initiation and perpetuation of autoimmunity recognize numerous checkpoints, from the genomic susceptibility to the breakdown of tolerance. This latter phenomenon includes the loss of B cell anergy and T regulatory cell failure, as well as the production of autoantibodies and autoreactive T cells. These mechanisms ultimately lead to tissue injury via different mechanisms that span from the production of proinflammatory cytokines to the chemotaxis of immune cells to the target sites. The pathways to autoimmunity have been widely investigated over the past year and resulted in a number of articles in peer-reviewed journals that has increased by nearly 10 % compared to 2011. We herein follow on the attempt to provide a brief discussion of the majority of articles on autoimmune diseases that were published in the major immunology journals in the previous solar year. The selection is necessarily arbitrary and may thus not be seen as comprehensive but reflects current research trends. Indeed, 2012 articles were mostly dedicated to define new and old mechanisms with potential therapeutic implications in autoimmunity in general, though based on specific clinical conditions or animal models. As paradigmatic examples, the environmental influence on autoimmunity, Th17 changes modulating the autoimmune response, serum autoantibodies and B cell changes as biomarkers and therapeutic targets were major issues addressed by experimental articles in 2012. Further, a growing number of studies investigated the sex bias of autoimmunity and supported different working hypotheses to explain the female predominance, including sex chromosome changes and reproductive life factors. In conclusion, the resulting scenario illustrates that common factors may underlie different autoimmune diseases and this is well represented by the observed alterations in interferon-α and TGFβ or by the shared signaling pathways.
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Affiliation(s)
- Carlo Selmi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy,
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Abstract
PURPOSE OF REVIEW Sjögren syndrome is a chronic autoimmune disease affecting lacrimal and salivary glands that often is accompanied by extraglandular disease manifestations. Although common in adults, the prevalence and prognosis of childhood Sjögren syndrome are unknown, in part due to lack of child-specific diagnostic and classification criteria. This review discusses difficulties in diagnosing childhood Sjögren syndrome and highlights recent findings in Sjögren syndrome treatment and pathogenesis from studies in adults and animal models over the past 18 months. RECENT FINDINGS Studies of rituximab show some therapeutic potential in adult Sjögren syndrome, whereas newer modalities including gene therapy and mesenchymal stem cell transfer are promising. The pathogenesis of Sjögren syndrome is emerging, including roles of T and B lymphocytes, autoantibodies, interferons, and glandular epithelial cells. Specific recent notable findings in Sjögren syndrome pathogenesis include identification of a type II interferon signature in salivary glands of Sjögren syndrome patients, characterization of salivary gland-infiltrating T-cell subsets, and characterization of antimuscarinic acetylcholine receptor type 3 autoantibodies. SUMMARY Childhood Sjögren syndrome is a poorly defined and underdiagnosed autoimmune disease that requires child-specific criteria in order to study disease burden and prognosis. Studies in adults and animal models continue to elucidate new potential diagnostic and therapeutic targets, which may be relevant for childhood Sjögren syndrome. VIDEO ABSTRACT http://links.lww.com/COR/A3.
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From single nucleotide polymorphisms to constant immunosuppression: mesenchymal stem cell therapy for autoimmune diseases. BIOMED RESEARCH INTERNATIONAL 2013; 2013:929842. [PMID: 24350294 PMCID: PMC3852726 DOI: 10.1155/2013/929842] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/20/2013] [Accepted: 09/20/2013] [Indexed: 12/29/2022]
Abstract
The regenerative abilities and the immunosuppressive properties of mesenchymal stromal cells (MSCs) make them potentially the ideal cellular product of choice for treatment of autoimmune and other immune mediated disorders. Although the usefulness of MSCs for therapeutic applications is in early phases, their potential clinical use remains of great interest. Current clinical evidence of use of MSCs from both autologous and allogeneic sources to treat autoimmune disorders confers conflicting clinical benefit outcomes. These varied results may possibly be due to MSC use across wide range of autoimmune disorders with clinical heterogeneity or due to variability of the cellular product. In the light of recent genome wide association studies (GWAS), linking predisposition of autoimmune diseases to single nucleotide polymorphisms (SNPs) in the susceptible genetic loci, the clinical relevance of MSCs possessing SNPs in the critical effector molecules of immunosuppression is largely undiscussed. It is of further interest in the allogeneic setting, where SNPs in the target pathway of MSC's intervention may also modulate clinical outcome. In the present review, we have discussed the known critical SNPs predisposing to disease susceptibility in various autoimmune diseases and their significance in the immunomodulatory properties of MSCs.
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Nordmark G, Wang C, Vasaitis L, Eriksson P, Theander E, Kvarnström M, Forsblad-d'Elia H, Jazebi H, Sjöwall C, Reksten TR, Brun JG, Jonsson MV, Johnsen SJ, Wahren-Herlenius M, Omdal R, Jonsson R, Bowman S, Ng WF, Eloranta ML, Syvänen AC. Association of genes in the NF-κB pathway with antibody-positive primary Sjögren's syndrome. Scand J Immunol 2013; 78:447-54. [PMID: 23944604 DOI: 10.1111/sji.12101] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 08/01/2013] [Indexed: 01/30/2023]
Abstract
Primary Sjögren's syndrome (SS) is a systemic autoimmune inflammatory disease characterized by focal lymphocytic infiltrates in the lachrymal and salivary glands and autoantibodies against the SSA/Ro and SSB/La antigens. Experimental studies have shown an activation of NF-κB in primary SS. NF-κB activation results in inflammation and autoimmunity and is regulated by inhibitory and activating proteins. Genetic studies have shown an association between multiple autoimmune diseases and TNFAIP3 (A20) and TNIP1 (ABIN1), both repressors of NF-κB and of IKBKE (IKKε), which is an NF-κB activator. The aim of this study was to analyse single nucleotide polymorphisms (SNPs) in the IKBKE, NFKB1, TNIP1 and TNFAIP3 genes for association with primary SS. A total of 12 SNPs were genotyped in 1105 patients from Scandinavia (Sweden and Norway, n = 684) and the UK (n = 421) and 4460 controls (Scandinavia, n = 1662, UK, n = 2798). When patients were stratified for the presence of anti-SSA and/or anti-SSB antibodies (n = 868), case-control meta-analysis found an association between antibody-positive primary SS and two SNPs in TNIP1 (P = 3.4 × 10(-5) , OR = 1.33, 95%CI: 1.16-1.52 for rs3792783 and P = 1.3 × 10(-3) , OR = 1.21, 95%CI: 1.08-1.36 for rs7708392). A TNIP1 risk haplotype was associated with antibody-positive primary SS (P = 5.7 × 10(-3) , OR = 1.47, 95%CI: 1.12-1.92). There were no significant associations with IKBKE, NFKB1 or TNFAIP3 in the meta-analysis of the Scandinavian and UK cohorts. We conclude that polymorphisms in TNIP1 are associated with antibody-positive primary SS.
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Affiliation(s)
- Gunnel Nordmark
- Section of Rheumatology, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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Lessard CJ, Li H, Adrianto I, Ice JA, Rasmussen A, Grundahl KM, Kelly JA, Dozmorov MG, Miceli-Richard C, Bowman S, Lester S, Eriksson P, Eloranta ML, Brun JG, Gøransson LG, Harboe E, Guthridge JM, Kaufman KM, Kvarnström M, Jazebi H, Cunninghame Graham DS, Grandits ME, Nazmul-Hossain ANM, Patel K, Adler AJ, Maier-Moore JS, Farris AD, Brennan MT, Lessard JA, Chodosh J, Gopalakrishnan R, Hefner KS, Houston GD, Huang AJW, Hughes PJ, Lewis DM, Radfar L, Rohrer MD, Stone DU, Wren JD, Vyse TJ, Gaffney PM, James JA, Omdal R, Wahren-Herlenius M, Illei GG, Witte T, Jonsson R, Rischmueller M, Rönnblom L, Nordmark G, Ng WF, Mariette X, Anaya JM, Rhodus NL, Segal BM, Scofield RH, Montgomery CG, Harley JB, Sivils KL. Variants at multiple loci implicated in both innate and adaptive immune responses are associated with Sjögren's syndrome. Nat Genet 2013; 45:1284-92. [PMID: 24097067 PMCID: PMC3867192 DOI: 10.1038/ng.2792] [Citation(s) in RCA: 349] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 09/11/2013] [Indexed: 12/11/2022]
Abstract
Sjögren’s syndrome is a common autoimmune disease (~0.7% of European Americans) typically presenting as keratoconjunctivitis sicca and xerostomia. In addition to strong association within the HLA region at 6p21 (Pmeta=7.65×10−114), we establish associations with IRF5-TNPO3 (Pmeta=2.73×10−19), STAT4 (Pmeta=6.80×10−15), IL12A (Pmeta =1.17×10−10), FAM167A-BLK (Pmeta=4.97×10−10), DDX6-CXCR5 (Pmeta=1.10×10−8), and TNIP1 (Pmeta=3.30×10−8). Suggestive associations with Pmeta<5×10−5 were observed with 29 regions including TNFAIP3, PTTG1, PRDM1, DGKQ, FCGR2A, IRAK1BP1, ITSN2, and PHIP amongst others. These results highlight the importance of genes involved in both innate and adaptive immunity in Sjögren’s syndrome.
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Affiliation(s)
- Christopher J Lessard
- 1] Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA. [2] Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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42
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Li Y, Zhang K, Chen H, Sun F, Xu J, Wu Z, Li P, Zhang L, Du Y, Luan H, Li X, Wu L, Li H, Wu H, Li X, Li X, Zhang X, Gong L, Dai L, Sun L, Zuo X, Xu J, Gong H, Li Z, Tong S, Wu M, Li X, Xiao W, Wang G, Zhu P, Shen M, Liu S, Zhao D, Liu W, Wang Y, Huang C, Jiang Q, Liu G, Liu B, Hu S, Zhang W, Zhang Z, You X, Li M, Hao W, Zhao C, Leng X, Bi L, Wang Y, Zhang F, Shi Q, Qi W, Zhang X, Jia Y, Su J, Li Q, Hou Y, Wu Q, Xu D, Zheng W, Zhang M, Wang Q, Fei Y, Zhang X, Li J, Jiang Y, Tian X, Zhao L, Wang L, Zhou B, Li Y, Zhao Y, Zeng X, Ott J, Wang J, Zhang F. A genome-wide association study in Han Chinese identifies a susceptibility locus for primary Sjögren's syndrome at 7q11.23. Nat Genet 2013; 45:1361-5. [PMID: 24097066 DOI: 10.1038/ng.2779] [Citation(s) in RCA: 155] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 09/06/2013] [Indexed: 12/15/2022]
Abstract
Primary Sjögren's syndrome is one of the most common autoimmune diseases. So far, genetic studies of Sjögren's syndrome have relied mostly on candidate gene approaches. To identify new genetic susceptibility loci for primary Sjögren's syndrome, we performed a three-stage genome-wide association study in Han Chinese. In the discovery stage, we analyzed 556,134 autosomal SNPs in 542 cases and 1,050 controls. We then validated promising associations in 2 replication stages comprising 1,303 cases and 2,727 controls. The combined analysis identified GTF2I at 7q11.23 (rs117026326: Pcombined = 1.31 × 10(-53), combined odds ratio (ORcombined) = 2.20) as a new susceptibility locus for primary Sjögren's syndrome. Our analysis also confirmed previously reported associations in Europeans in the regions of STAT4, TNFAIP3 and the major histocompatibility complex (MHC). Fine mapping of the region around GTF2I showed that rs117026326 in GTF2I had the most significant association, with associated SNPs extending from GTF2I to GTF2IRD1-GTF2I.
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Affiliation(s)
- Yongzhe Li
- 1] Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China. [2]
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Li H, Ice JA, Lessard CJ, Sivils KL. Interferons in Sjögren's Syndrome: Genes, Mechanisms, and Effects. Front Immunol 2013; 4:290. [PMID: 24062752 PMCID: PMC3778845 DOI: 10.3389/fimmu.2013.00290] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 09/04/2013] [Indexed: 01/25/2023] Open
Abstract
Sjögren’s syndrome (SS) is a common, progressive autoimmune exocrinopathy distinguished by dry eyes and mouth and affects ∼0.7% of the European population. Overexpression of transcripts induced by interferons (IFN), termed as an “IFN signature,” has been found in SS patients. Four microarray studies have been published in SS that identified dysregulated genes within type I IFN signaling in either salivary glands or peripheral blood of SS patients. The mechanism of this type I IFN activation is still obscure, but several possible explanations have been proposed, including virus infection-initiated and immune complex-initiated type I IFN production by plasmacytoid dendritic cells. Genetic predisposition to increased type I IFN signaling is supported by candidate gene studies showing evidence for association of variants within IFN-related genes. Once activated, IFN signaling may contribute to numerous aspects of SS pathophysiology, including lymphocyte infiltration into exocrine glands, autoantibody production, and glandular cell apoptosis. Thus, dysregulation of IFN pathways is an important feature that can be potentially used as a serum biomarker for diagnosis and targeting of new treatments in this complex autoimmune disease.
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Affiliation(s)
- He Li
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation , Oklahoma City, OK , USA ; Department of Pathology, University of Oklahoma Health Sciences Center , Oklahoma City, OK , USA
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Invernizzi P. Liver auto-immunology: the paradox of autoimmunity in a tolerogenic organ. J Autoimmun 2013; 46:1-6. [PMID: 24012346 DOI: 10.1016/j.jaut.2013.08.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 08/14/2013] [Indexed: 02/07/2023]
Abstract
The study of the liver as a lymphoid organ is a growing field fueled by our better knowledge of the different component of the immune system and how they orchestrate an immune-related response. The liver have highly specialized mechanisms of immune tolerance, mainly because is continuously exposed to microbial and environmental antigens, and dietary components from the gut. Accordingly, the liver contains specialized lymphoid subpopulations acting as antigen-presenting cells. Growing evidences show that the liver is also associated with obesity-associated diseases because of its immune-related capacity to sense metabolic stress induced by nutritional surplus. Finally, the liver produces a pletora of neo-antigens being the primary metabolic organ of the body. Common immune mechanisms play a key pathogenetic role in most of acute and chronic liver diseases and in the rejection of liver allografts. Any perturbations of liver-related immune functions have important clinical implications. This issue of the Journal of Autoimmunity is focused on the more recent advances in our knowledge related to the loss of liver tolerance, a paradox for a tolerogenic organ, that leads to overactivation of the innate and adaptive immune response and the development of autoimmune liver diseases, such as autoimmune hepatitis, primary biliary cirrhosis, and primary sclerosing cholangitis. The invited expert review articles capture the underlying immunomolecular mechanisms of the development and progression of autoimmune liver diseases, the novel field of the immune-related "liver-gut" axis influences to the development of liver autoimmunity, the predominant role of genetic factors, and the increasingly effective immuno-therapeutic possibilities.
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Affiliation(s)
- Pietro Invernizzi
- Liver Unit and Center for Autoimmune Liver Diseases, Humanitas Clinical and Research Center, Rozzano, Milan, Italy; Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, Davis, CA, USA.
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Katzav A, Arango MT, Kivity S, Tanaka S, Givaty G, Agmon-Levin N, Honda M, Anaya JM, Chapman J, Shoenfeld Y. Passive transfer of narcolepsy: Anti-TRIB2 autoantibody positive patient IgG causes hypothalamic orexin neuron loss and sleep attacks in mice. J Autoimmun 2013; 45:24-30. [DOI: 10.1016/j.jaut.2013.06.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 06/18/2013] [Indexed: 01/07/2023]
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Epstein-Barr virus in systemic autoimmune diseases. Clin Dev Immunol 2013; 2013:535738. [PMID: 24062777 PMCID: PMC3766599 DOI: 10.1155/2013/535738] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 07/17/2013] [Indexed: 02/07/2023]
Abstract
Systemic autoimmune diseases (SADs) are a group of connective tissue diseases with diverse, yet overlapping, symptoms and autoantibody development. The etiology behind SADs is not fully elucidated, but a number of genetic and environmental factors are known to influence the incidence of SADs. Recent findings link dysregulation of Epstein-Barr virus (EBV) with SAD development. EBV causes a persistent infection with a tight latency programme in memory B-cells, which enables evasion of the immune defence. A number of immune escape mechanisms and immune-modulating proteins have been described for EBV. These immune modulating functions make EBV a good candidate for initiation of autoimmune diseases and exacerbation of disease progression. This review focuses on systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and Sjögren's syndrome (SS) and sum up the existing data linking EBV with these diseases including elevated titres of EBV antibodies, reduced T-cell defence against EBV, and elevated EBV viral load. Together, these data suggest that uncontrolled EBV infection can develop diverse autoreactivities in genetic susceptible individuals with different manifestations depending on the genetic background and the site of reactivation.
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T helper subsets in Sjögren's syndrome and IgG4-related dacryoadenitis and sialoadenitis: a critical review. J Autoimmun 2013; 51:81-8. [PMID: 23920005 DOI: 10.1016/j.jaut.2013.07.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 07/15/2013] [Indexed: 01/13/2023]
Abstract
IgG4-related disease (IgG4-RD) is a systemic disease characterized by the elevation of serum IgG4 and infiltration of IgG4-positive plasma cells in multiple target organs, including the pancreas, kidney, biliary tract and salivary glands. In contrast, Mikulicz's disease (MD) has been considered a subtype of Sjögren's syndrome (SS) based on histopathological similarities. However, it is now recognized that MD is an IgG4-RD distinguishable from SS and called as IgG4-related dacryoadenitis and sialoadenitis (IgG4-DS). Regarding immunological aspects, it is generally accepted that CD4+ T helper (Th) cells play a crucial role in the pathogenesis of SS. Since it is well known that IgG4 is induced by Th2 cytokines such as interleukin (IL)-4 and IL-13, IgG4-DS is speculated to be a unique inflammatory disorder characterized by Th2 immune reactions. However, the involvement of Th cells in the pathogenesis of IgG4-DS remains to be clarified. Exploring the role of Th cell subsets in IgG4-DS is a highly promising field of investigation. In this review, we focus on the selective localization and respective functions of Th cell subsets and discuss the differences between SS and IgG4-DS to clarify the pathogenic mechanisms of these diseases.
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Qin B, Wang J, Liang Y, Yang Z, Zhong R. The association between TNF-α, IL-10 gene polymorphisms and primary Sjögren's syndrome: a meta-analysis and systemic review. PLoS One 2013; 8:e63401. [PMID: 23723980 PMCID: PMC3661073 DOI: 10.1371/journal.pone.0063401] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 04/02/2013] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Previous studies have evaluated the associations of TNF-α, IL-10 gene polymorphisms and susceptibility to pSS, but the results remained controversial. To assess the associations between TNF-α-308, IL-10-1082, -819, -592 polymorphisms and pSS risk, a meta-analysis was conducted. METHOD The available articles were searched in PubMed, EMBASE and MEDLINE. ORs with 95% CIs were calculated to determine the strength of associations by fixed-effects or random-effects models. The data about IL-10-1082, -819, -592 polymorphisms were analyzed in the additive, dominant and recessive modes. The associations between haplotypes of IL-10 gene and susceptibility to pSS were also assessed. RESULTS A total of 9 relevant studies were identified in the meta-analyses. TNF-α-308 A allele was significantly associated with pSS (OR = 1.8, 95% CI: 1.53-2.13). The IL-10 -1082 G allele and the genotype "GCC/ATA" were identified as a candidate genetic risk factor for pSS. Under the dominant model for -819 and -582, the overall ORs suggested that individuals with genotype (CC+TC) or (CC+AC) may have a 59% increased risk of pSS in Caucasians population (OR = 1.59, 95% CI:1.09-1.23). Besides, the genotype "ATA/ATA" may be a protective factor against the development of pSS in Caucasians (OR = 0.40, 95% CI:0.19-0.84). CONCLUSION The meta-analysis demonstrated TNF-α-308 A, IL-10-1082 G allele were significantly associated with pSS susceptibility, supporting these alleles were predisposing factors for pSS. In Caucasian population, the genotype "ATA/ATA" may be a protective factors.
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Affiliation(s)
- Baodong Qin
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jiaqi Wang
- Department of Stomatology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yan Liang
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zaixing Yang
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Renqian Zhong
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China
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Barrera M, Bahamondes V, Sepúlveda D, Quest A, Castro I, Cortés J, Aguilera S, Urzúa U, Molina C, Pérez P, Ewert P, Alliende C, Hermoso M, González S, Leyton C, González M. Sjögren's syndrome and the epithelial target: A comprehensive review. J Autoimmun 2013; 42:7-18. [DOI: 10.1016/j.jaut.2013.02.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 02/11/2013] [Indexed: 12/12/2022]
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50
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Reksten TR, Johnsen SJA, Jonsson MV, Omdal R, Brun JG, Theander E, Eriksson P, Wahren-Herlenius M, Jonsson R, Nordmark G. Genetic associations to germinal centre formation in primary Sjögren's syndrome. Ann Rheum Dis 2013; 73:1253-8. [DOI: 10.1136/annrheumdis-2012-202500] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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