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Babaie F, Mohammadi H, Salimi S, Ghanavatinegad A, Abbasifard M, Yousefi M, Hajaliloo M, Khalili Y, Zamanlou S, Safari R, Hemmatzadeh M, Rezaiemanesh A, Salimi R, Baradaran B, Babaloo Z. Inhibition of ERAP1 represses HLA-B27 free heavy chains expression on polarized macrophages and interrupts NK cells activation and function from ankylosing spondylitis. Clin Immunol 2023; 248:109268. [PMID: 36804470 DOI: 10.1016/j.clim.2023.109268] [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: 07/31/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/18/2023]
Abstract
BACKGROUND We aimed to assess if Endoplasmic reticulum aminopeptidase 1 (ERAP1) polymorphisms might impress Human leukocyte antigen (HLA)-B27-free heavy chains (FHCs) expression on macrophages and eventually NK cell activation in Ankylosing spondylitis (AS). METHODS Blood samples were obtained from 10 HLAB27+ patients with protective and 10 HLAB27+ patients with non-protective genotype. Monocytes were isolated and polarized toward M1 and M2 macrophages. ERAP1 was inhibited in macrophages, which were then co-cultured with autologous NK cells. RESULTS Expression of HLA-B27-FHCs on M1 and M2 macrophages was reduced in patients with protective ERAP1 genotype. Co-culturing ERAP1-inhibited M1 macrophages and NK cells from patients with protective genotype resulted in downmodulation of CD69 and CD107a markers on NK cells and reduced number of IFN-γ+ NK cells compared to that of patients with non-protective genotypes. CONCLUSION Inhibition of ERAP1 activity, by diminishing NK activation, may have therapeutic value in treating AS patients.
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Affiliation(s)
- Farhad Babaie
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran; Department of Genetic and Immunology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Hamed Mohammadi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran; Department of Immunology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Sorayya Salimi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Alireza Ghanavatinegad
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mitra Abbasifard
- Immunology of Infectious Diseases Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran; Department of Internal Medicine, Ali-Ibn Abi-Talib Hospital, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Mehdi Yousefi
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehrzad Hajaliloo
- Connective Tissue Research Center, Tabriz University of Medical Science, Iran
| | - Younes Khalili
- Iranian Social Security Organization, Emam Reza Hospital, Urmia, Iran
| | - Sajjad Zamanlou
- Iranian Social Security Organization, Emam Reza Hospital, Urmia, Iran
| | - Roghaiyeh Safari
- Department of Infectious Disease, Imperial College London, London, UK
| | - Maryam Hemmatzadeh
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Alireza Rezaiemanesh
- Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Salimi
- Research and Development (R&D) Department, RS, &RS Scientific, Belgium
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Zohreh Babaloo
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Connective Tissue Research Center, Tabriz University of Medical Science, Iran.
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B Cell Involvement in the Pathogenesis of Ankylosing Spondylitis. Int J Mol Sci 2021; 22:ijms222413325. [PMID: 34948121 PMCID: PMC8703482 DOI: 10.3390/ijms222413325] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 12/25/2022] Open
Abstract
Extensive research into ankylosing spondylitis (AS) has suggested the major role of genetics, immune reactions, and the joint-gut axis in its etiology, although an ultimate consensus does not yet exist. The available evidence indicates that both autoinflammation and T-cell-mediated autoimmune processes are actively involved in the disease process of AS. So far, B cells have received relatively little attention in AS pathogenesis; this is largely due to a lack of conventional disease-defining autoantibodies. However, against prevailing dogma, there is a growing body of evidence suggestive of B cell involvement. This is illustrated by disturbances in circulating B cell populations and the formation of auto-reactive and non-autoreactive antibodies, along with B cell infiltrates within the axial skeleton of AS patients. Furthermore, the depletion of B cells, using rituximab, displayed beneficial results in a subgroup of patients with AS. This review provides an overview of our current knowledge of B cells in AS, and discusses their potential role in its pathogenesis. An overarching picture portrays increased B cell activation in AS, although it is unclear whether B cells directly affect pathogenesis, or are merely bystanders in the disease process.
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Souza RC, de Sousa ET, Sousa D, Sales M, Dos Santos Oliveira R, Mariano MH, Rushansky E, Amorim Gomes AC, Silva E. Prevalence of Temporomandibular Joint Disorders in Patients with Ankylosing Spondylitis: A Cross-Sectional Study. Clin Cosmet Investig Dent 2021; 13:469-478. [PMID: 34795532 PMCID: PMC8593348 DOI: 10.2147/ccide.s320537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/17/2021] [Indexed: 12/17/2022] Open
Abstract
Background This study sought to investigate which temporomandibular disorders (TMD) can be expected in patients with ankylosing spondylitis (AS) and to determine the combined impact of these conditions on the psychological status, chronic pain, and functional disability. Material and Methods A cross-sectional study composed of 30 patients between 18 and 65 years with ankylosing spondylitis was performed. The research protocol considered the evaluation of outcomes related to the ankylosing spondylitis (HLA-B27 antigen, Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Bath Ankylosing Spondylitis Functional Index (BASFI) and Health Assessment Questionnaire – Spondylitis (HAQ-S)) and temporomandibular disorders (axis I and II of the Research Diagnostic Criteria for Temporomandibular Disorders – RDC/TMD). Descriptive analyses were applied to express the results. Results The sample presented both AS and TMD, most of them (24) were diagnosed with conventional AS (HLA-B27 positive). The BASDAI was scored as 7.70 (2.30) (high activity of AS disease). Functional disability represented by high scores of BASFI [7.00 (2.63)] and HAQ-S [1.79 (0.62)] demonstrates the severe impact of the disease on the daily routine and quality of life. According to RDC/TMD diagnostic criteria, 17 (57%) share the three groups of TMD, and 9 (30%) share two groups of TMD (Group I and III). Over 73% of the volunteers scored high levels of chronic pain (Grade III and IV) associated with a high depression scale score. The sample scored the somatization scale (with and without pain) as severe. Conclusion Patients with ankylosing spondylitis presented a high prevalence of temporomandibular disorder, most of them having the degenerative forms of TMJ disease. AS and TMD cause moderate to severe chronic pain and a negative impact on psychological status and functional capacities.
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Affiliation(s)
- Rebeca Cecília Souza
- Department of Oral Surgery, Dental School, Pernambuco University, Recife, Pernambuco, Brazil
| | - Emerson Tavares de Sousa
- Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - David Sousa
- Center of Medical Sciences, Federal University of Paraiba, Joao Pessoa, Paraiba, Brazil
| | - Marcelo Sales
- Department of Clinical and Community Dentistry, Dental School, Federal University of Paraiba, Joao Pessoa, Paraiba, Brazil
| | | | - Maria Helena Mariano
- Department of Rheumatology, Oswaldo Cruz University Hospital, Medical School, Pernambuco University, Recife, Pernambuco, Brazil
| | - Eliézer Rushansky
- Brazilian Society of Rheumatology, Department of Rheumatology, Oswaldo Cruz University Hospital, Medical School, Pernambuco University, Recife, Pernambuco, Brazil
| | - Ana Cláudia Amorim Gomes
- Department of Oral and Maxillofacial Surgery, Oswaldo Cruz University Hospital, Dental School, Pernambuco University, Recife, Pernambuco, Brazil
| | - Emanuel Silva
- Department of Oral and Maxillofacial Surgery, Oswaldo Cruz University Hospital, Dental School, Pernambuco University, Recife, Pernambuco, Brazil
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Farahani RH, Esmaeilzadeh E, Asl AN, Heidari MF, Hazrati E. Frequency of HLA Alleles in a Group of Severe COVID-19 Iranian Patients. IRANIAN JOURNAL OF PUBLIC HEALTH 2021; 50:1882-1886. [PMID: 34722384 PMCID: PMC8542815 DOI: 10.18502/ijph.v50i9.7061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/12/2020] [Indexed: 11/24/2022]
Abstract
Background: Human Leukocyte Antigen (HLA) system composed of a group of related proteins with important functions in the immune system. Several studies have reported that there is a significant association between specific HLA alleles and the susceptibility to different infectious diseases. This study aimed to detect the specific HLA alleles that cause higher susceptibility to COVID-19, we analyzed the HLA allele frequency distribution in Iranian patients with a severe form of COVID-19. Methods: Overall, 48 severe cases of COVID-19 that were hospitalized and required intensive care unit (ICU) admission between Oct and Dec 2020 were included in this study. Genomic DNA was extracted from the peripheral blood samples and HLA typing (Locus A, B, and DR) was performed for the patients. Results: After analyzing and comparing the results with a reference group of 500 Iranian individuals, a significant association was found for HLA-B*38, HLA-A*68, HLA-A*24, and HLA-DRB1*01. Conclusion: These results may be valuable for studying the potential association of specific HLA alleles with susceptibility to COVID-19 and mortality due to the disease.
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Affiliation(s)
- Ramin Hamidi Farahani
- Department of Infectious Diseases, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Emran Esmaeilzadeh
- Department of Basic Medical Sciences, School of Medicine, AJA University of Medical Sciences, Tehran, Iran.,Fetal Health Research Center, Hope Generation Foundation, Tehran, Iran
| | - Amir Nezami Asl
- Department of Aerospace Medicine, School of Aerospace and Subaquatic Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Mohammad Foad Heidari
- Department of Laboratory Sciences, School of Aerospace and Subaquatic Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Ebrahim Hazrati
- Department of Critical Care Medicine, School of Allied Medical Sciences, AJA University of Medical Sciences, Tehran, Iran
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Wang CM, Jan Wu YJ, Lin JC, Huang LY, Wu J, Chen JY. Genetic effects of B3GNT2 on ankylosing spondylitis susceptibility and clinical manifestations in Taiwanese. J Formos Med Assoc 2021; 121:1283-1294. [PMID: 34645591 DOI: 10.1016/j.jfma.2021.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/09/2021] [Accepted: 09/17/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND/PURPOSE The intergenic SNP rs10865331 at 2p15 was identified as a major risk factor for ankylosing spondylitis (AS) susceptibility in genome-wide association studies (GWAS). B3GNT2 gene regulates polylactosamine synthesis is potentially functionally relevant to AS disease development. We investigated whether SNP rs10865331 and two B3GNT2 SNPs (rs11900673 and rs1136151) are associated with AS susceptibility and disease severity in Taiwanese. METHODS Distributions of genotypes, alleles, and haplotypes of three SNPs were compared between 1,472 AS patients and 2,117 healthy blood donors and among AS patients stratified by clinical characteristics. RESULTS The intergenic SNP rs10865331 was significantly associated with AS (PFDR = 1.02E-05) in Taiwanese. In AS patients stratified by positivity of HLA-B27 and syndesmophyte formation, all three B3GNT2 locus SNPs (rs11900673, rs1136151, and rs10865331) were significantly associated with syndesmophyte formation among HLA-B27 positive AS patients. Haplotype analyses revealed that the "CTA" (rs11900673C/rs1136151T/rs10865331A) haplotype was significantly associated with AS susceptibility (Padj = 0.0177) and syndesmophyte formation (Padj = 0.016) in HLA-B27 positive patients. In contrast, "TCG" (rs11900673T/rs1136151C/rs10865331G) haplotype showed protection against AS development (Padj = 0.0005 for HLA-B27 positive and Padj = 0.004 for HLA-B27 negative, respectively) and syndesmophyte formation (Padj = 0.0017) in HLA-B27 positive patients. Furthermore, B3GNT2 mRNA expressions were negatively associated with erythrocyte sedimentation rate (ESR, P = 0.0103), C-reactive protein (CRP, P = 0.0353), Bath ankylosing spondylitis functional index (BASFI, P = 0.0171), and syndesmophyte formation (P = 0.0148). CONCLUSION Our data suggest that B3GNT2 gene may contribute to AS development and affect AS severity by interacting with HLA-B27 in Taiwanese.
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Affiliation(s)
- Chin-Man Wang
- Department of Physical Medicine Rehabilitation, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan
| | - Yeong-Jian Jan Wu
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan
| | - Jing-Chi Lin
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan
| | - Li-Yu Huang
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan
| | - Jianming Wu
- Dept. of Veterinary and Biomedical Sciences, Dept. of Medicine, University of Minnesota, USA
| | - Ji-Yih Chen
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan.
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Du J, Sun J, Wen Z, Wu Z, Li Q, Xia Y, Yang Q, Yang C. Serum IL-6 and TNF-α Levels Are Correlated with Disease Severity in Patients with Ankylosing Spondylitis. Lab Med 2021; 53:149-155. [PMID: 34415341 DOI: 10.1093/labmed/lmab029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE Previous studies have shown that a number of cytokines participate in the regulation of ankylosing spondylitis (AS). To investigate the potential role of interleukin (IL)-6 and tumor necrosis factor- α (TNF-α) in AS pathogenesis, this study examined the serum levels of IL-6 and TNF-α in patients with AS and its clinical association with disease activity. MATERIALS AND METHODS The serum concentrations of IL-6 and TNF-α from 80 patients with AS and 46 healthy control patients (HCs) were examined by electrochemiluminescence immunoassay. The correlations between the serum IL-6 and TNF-α levels and the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), computed tomography (CT) imaging-based classification, and laboratory indicators were analyzed using the Spearman correlation test. RESULTS Compared to HCs, patients with AS showed higher levels of IL-6 and TNF-α. There was also a positive correlation between the serum IL-6 and TNF-α levels and the BASDAI, the progression of AS, and the CT imaging-based classification. The serum levels of IL-6 correlated closely with C-reactive protein and the erythrocyte sedimentation rate. More important, patients with AS with hip joint involvement exhibited a significant elevation of serum levels of TNF-α, and higher IL-6 was detected in patients with the involvement of joints other than the hip and sacroiliac joints. CONCLUSION The serum levels of IL-6 and TNF-α can function as important indicators for auxiliary diagnosis and disease activity evaluation of AS.
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Affiliation(s)
- Jing Du
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, P.R. China
| | - Jinxia Sun
- Shenzhen GenTarGet Biotherapeutics Co., Ltd., Shenzhen, P.R. China
| | - Zhanpeng Wen
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, P.R. China
| | - Zhicheng Wu
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, P.R. China
| | - Qian Li
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, P.R. China
| | - Yuhao Xia
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, P.R. China
| | - Qiannan Yang
- Department of Biology, Case Western Reserve University, Cleveland, Ohio, US
| | - Chao Yang
- Department of Surgery, Shenzhen People's Hospital, Shenzhen, P.R. China
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Wu X, Wu J, Li X, Wei Q, Lv Q, Zhang P, Zheng X, Chen Z, Cao S, Tu L, Gu J. The Clinical Characteristics of Other HLA-B Types in Chinese Ankylosing Spondylitis Patients. Front Med (Lausanne) 2021; 7:568790. [PMID: 33490092 PMCID: PMC7820707 DOI: 10.3389/fmed.2020.568790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 11/19/2020] [Indexed: 12/03/2022] Open
Abstract
HLA-B27 has an established relationship with the development of ankylosing spondylitis (AS). After reviewing the HLA-B genotype from 407 Chinese subjects (318 patients and 89 sex-matched controls), we found that 252 patients and 32 controls were HLA-B27(+) and that HLA-B*27:04 was the dominant HLA-B27 subtype (N = 224). In all participants, HLA*27:04 homozygous were only detected in two patients. In the HLA-B27(+) group, HLA-B40 was observed in 51 cases and one control (p < 0.05, OR = 7.87, 95% CI 1.05–59.0); of these, the most genotype was HLA-B*27:04/B*40:01(N = 38). Two hundred thirty-nine patients' clinical information was recorded. Cases with HLA-B27/B46 had more peripheral joint involvement (OR = 3.95, 95% CI 1.77–8.79) in HLA-B27(+) AS. HLA-B*15:02 may be a significant risk element to peripheral joint involvement (p < 0.05) in HLA-B27(−) patients. Therefore, we believe HLA-B*40:01, HLA-B*46:01, and HLA-B*15:02 can be the test indicators for AS diagnostic value.
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Affiliation(s)
- Xinyu Wu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jialing Wu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xiaomin Li
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Qiujing Wei
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Qing Lv
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Pingping Zhang
- Department of Pediatrics, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xuqi Zheng
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zena Chen
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Shuangyan Cao
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Liudan Tu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jieruo Gu
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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The Genetics of Spondyloarthritis. J Pers Med 2020; 10:jpm10040151. [PMID: 33023259 PMCID: PMC7711559 DOI: 10.3390/jpm10040151] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/17/2020] [Accepted: 09/24/2020] [Indexed: 12/12/2022] Open
Abstract
The term spondyloarthritis (SpA) encompasses a group of chronic inflammatory diseases with common features in terms of clinical presentation and genetic predisposition. SpA is characterized by inflammation of the spine and peripheral joints, and is also be associated with extra-articular inflammatory manifestations such as psoriasis, uveitis, or inflammatory bowel disease (IBD). The etiology of SpA is not completely understood, but it is known to have a strong genetic component dominated by the human leukocyte antigen (HLA)-B27. In the last few years, our understanding of genetic susceptibility to SpA, particularly ankylosing spondylitis (AS), has greatly improved thanks to the findings derived from powered genome-wide association studies (GWAS) based on single nucleotide polymorphism (SNP) arrays. These studies have identified many candidate genes, therefore providing new potential directions in the exploration of disease mechanisms, especially with regard to the key role of the immune system in the pathogenesis of SpA. SpA is a complex disease where genetic variability, environmental factors, and random events interact to trigger pathological pathways. The aim of this review is to summarize current findings on the genetics of SpA, some of which might help to study new treatment approaches.
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Liu HW, Wei DX, He DW, Deng JZ, Zhu JJ, Xu K, Hu D, Li J, Hu WH, Wang Y, Xiao SH, Fu LG. The rs6427384 and rs6692977 Single Nucleotide Polymorphisms of the Fc Receptor-Like 5 (FCRL5) Gene and the Risk of Ankylosing Spondylitis: A Case Control Study in a Single Center in China. MEDICAL SCIENCE MONITOR : INTERNATIONAL MEDICAL JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2020; 26:e920956. [PMID: 32892204 PMCID: PMC7493454 DOI: 10.12659/msm.920956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The study aimed to explore the genetic association of Fc receptor-like 5 (FCRL5) gene variants (rs6427384 and rs6692977) with ankylosing spondylitis risk in Chinese Han population. MATERIAL AND METHODS Genotyping for FCRL5 gene variations rs6427384 and rs6692977 was implemented among 130 ankylosing spondylitis cases and 135 healthy persons, through polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method. Frequency dissimilarity for 2 polymorphisms was compared between 2 groups using chi-square test. The association strength of FCRL5 gene polymorphism with ankylosing spondylitis risk was estimated by odds ratios with 95% confidence intervals. RESULTS The frequencies of rs6427384 CC genotype and C allele were significantly lower in the case group than that in the control group (P<0.05), which suggested that C allele of rs6427384 polymorphism might offer protection against ankylosing spondylitis onset. Whereas only 2 genotypes of rs6692977 were detected in the control group, and no significant association was found with ankylosing spondylitis susceptibility. CONCLUSIONS FCRL5 gene polymorphism rs6427384 was correlated to ankylosing spondylitis occurrence among Chinese Han population, while rs6692977 was not.
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Affiliation(s)
- Hua-Wei Liu
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Dai-Xu Wei
- Department of Life Sciences and Medicine, Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, Xian, Shaanxi, China (mainland)
| | - Da-Wei He
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Jiu-Zheng Deng
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Jian-Jin Zhu
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Kai Xu
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Dong Hu
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Jing Li
- Department of Orthopedics, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Wen-Hao Hu
- Department of Orthopedics, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Yan Wang
- Department of Orthopedics, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China (mainland)
| | - Song-Hua Xiao
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
| | - Li-Gong Fu
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China (mainland)
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Qu Z, Huang J, Yang F, Hong J, Wang W, Yan S. Sex hormone-binding globulin and arthritis: a Mendelian randomization study. Arthritis Res Ther 2020; 22:118. [PMID: 32423484 PMCID: PMC7236473 DOI: 10.1186/s13075-020-02202-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/28/2020] [Indexed: 12/17/2022] Open
Abstract
Background Sex hormone-binding globulin (SHBG) has been reported to be a risk factor associated with the development of arthritis by previous observational studies more so of three common forms of arthritis: osteoarthritis (OA), rheumatoid arthritis (RA), and ankylosing spondylitis (AS). This study aimed to determine whether the concentrations of circulating SHBG are causally associated with the risk of OA, RA, and AS. Methods The two-sample Mendelian randomization (MR) approach was used for this study. The inverse-variance-weighted (IVW) method was used for the main analysis. Single-nucleotide polymorphisms (SNPs) associated with SHBG were selected from a large genome-wide association study (GWAS) of 28,837 European individuals. The summary statistics for OA, RA, and AS were extracted from the UK Biobank Resource (n = 361,141) and a GWAS dataset (n = 455,221). Results Positive causal associations were found between circulating SHBG concentrations and OA (effect = 1.086; 95% CI, 1.009 to 1.168; P = 0.027) and RA (effect = 1.003; 95% CI, 1.000 to 1.007; P = 0.047) in overall analyses. However, there was no evidence of association between SHBG levels and AS. Based on the stratification of skeletal sites, SHBG levels were found to be significantly associated with hip OA (effect = 1.423; 95% CI, 1.219 to 1.660; P = 7.753 × 10−6). However, this was not the case with knee OA. Conclusions There were positive causal effects of circulating SHBG on the development of OA and RA. Moreover, there was a site-specific association between SHBG and hip OA. Evidently, measurement of SHBG in serum could be valuable in the clinical assessment of arthritis especially in early screening and prevention of OA and RA. However, the mechanisms by which SHBG plays causal roles in the development of arthritis require further investigations.
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Affiliation(s)
- Zihao Qu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310009, Hangzhou, China.,Orthopedic Research Institute of Zhejiang University, Zhejiang, 310009, Hangzhou, China
| | - Jiawei Huang
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fangkun Yang
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310009, Hangzhou, China
| | - Jianqiao Hong
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310009, Hangzhou, China.,Orthopedic Research Institute of Zhejiang University, Zhejiang, 310009, Hangzhou, China
| | - Wei Wang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310009, Hangzhou, China.,Orthopedic Research Institute of Zhejiang University, Zhejiang, 310009, Hangzhou, China
| | - Shigui Yan
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310009, Hangzhou, China. .,Orthopedic Research Institute of Zhejiang University, Zhejiang, 310009, Hangzhou, China.
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11
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Dillman RO, Nistor GI, Poole AJ. Genomic, proteomic, and immunologic associations with a durable complete remission of measurable metastatic melanoma induced by a patient-specific dendritic cell vaccine. Hum Vaccin Immunother 2019; 16:742-755. [PMID: 31625825 PMCID: PMC7227648 DOI: 10.1080/21645515.2019.1680239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
This report describes efforts to understand the immune mechanism of action that led to a complete response in a patient with progressive, refractory, metastatic melanoma after treatment with a therapeutic vaccine consisting of autologous dendritic cells (DC) loaded with autologous tumor antigens (ATA) derived from cells that were self-renewing in cell culture. Her histocompatibility type proved to be HLA B27 with extensive mutations in the HLA-A locus. Exomic analysis of proliferating tumor cells revealed more than 2800 non-synonymous mutations compared to her leukocytes. Histology of resected tumor lesions showed no evidence of an existing or suppressed immune response. In in vitro mixed cell cultures, DC loaded with ATA induced increased IL-22 expression, and a four-fold increase in CD8 + T lymphocytes. Cryopreserved blood samples obtained at week-0, 1 week before the first of three-weekly vaccine injections, and at week-4, 1 week after the third dose, were analyzed by protein array and compared for 110 different serum markers. At baseline, she had marked elevations of amyloid A, IL-12p40, IL21, IL-22, IL-10, IL-16, GROa, TNF-alpha, IL-3, and IL-2, and a lesser elevation of IL-15. One week after 3 weekly vaccinations she had a further 80% increase in amyloid A, a further 66% increase in IL-22, a 92% decrease in IL12p40, a 45% decrease in TGF-β and 26% decrease in IL-10. The data suggested that by 3 weeks after the first DCV injection, vaccine-induced changes in this particular patient were most consistent with enhanced innate and Th1 immune responses rather than Th2 or Th17.
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Affiliation(s)
- Robert O Dillman
- AIVITA Biomedical, Inc, Irvine, CA, USA.,Hoag Cancer Institute, Newport Beach, CA, USA
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12
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ERAP1-ERAP2 haplotypes are associated with ankylosing spondylitis in Polish patients. Hum Immunol 2019; 80:339-343. [DOI: 10.1016/j.humimm.2019.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/07/2019] [Accepted: 02/07/2019] [Indexed: 01/03/2023]
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13
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Yalcinkaya E, Basaran MM, Erdem H, Kocyigit M, Altundag A, Hummel T. Olfactory dysfunction in spondyloarthritis. Eur Arch Otorhinolaryngol 2019; 276:1241-1245. [DOI: 10.1007/s00405-019-05364-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 02/25/2019] [Indexed: 01/29/2023]
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14
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Assessment of immunological profile in ankylosing spondylitis patients following a clinical trial with guluronic acid (G2013), as a new NSAID with immunomodulatory properties. Immunol Res 2018; 67:108-115. [DOI: 10.1007/s12026-018-9042-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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López-Medina C, Moltó A. Update on the epidemiology, risk factors, and disease outcomes of axial spondyloarthritis. Best Pract Res Clin Rheumatol 2018; 32:241-253. [PMID: 30527429 DOI: 10.1016/j.berh.2018.10.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 08/03/2018] [Accepted: 09/09/2018] [Indexed: 12/17/2022]
Abstract
Axial spondyloarthritis (axSpA) is the prototype of a class of a rheumatic chronic inflammatory disease named spondyloarthritis (SpA). The prevalence of axSpA ranges between 0.1% and 1.4% globally, hence showing geographic differences that can be explained mostly by the prevalence of the HLA-B27 antigen. However, not many studies have evaluated the incidence of this disease. Inflammation may be initiated in the enthesis as a consequence of the action of IL-23, which can activate resident T cells. The elevated expression of IL-23 has been explained by three hypotheses: the presence of HLA-B27, variations in the gut microbiome and the biomechanical stress at the enthesis. However, the role of IL-23 in this whole context is still unclear. In axSpA, the presence of syndesmophytes at baseline, systemic inflammation, and smoking may promote the spinal radiographic damage in these patients. The most frequent comorbidity in these patients is osteoporosis, which is directly associated with ankylosis and inflammation.
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Affiliation(s)
- Clementina López-Medina
- Rheumatology Department, Cochin Hospital, Paris, France; Inserm (U1153), Clinical Epidemiology and Biostatistics, PRES Sorbonne Paris-Cité, Paris, France; Rheumatology Department, Reina Sofía University Hospital, Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain.
| | - Anna Moltó
- Rheumatology Department, Cochin Hospital, Paris, France; Inserm (U1153), Clinical Epidemiology and Biostatistics, PRES Sorbonne Paris-Cité, Paris, France
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16
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Chen Y, Ouyang J, Yan R, Maarouf MH, Wang X, Chen B, Liu S, Hu J, Guo G, Zhang J, Dai SM, Xu H, Chen JL. Silencing SOCS3 Markedly Deteriorates Spondyloarthritis in Mice Induced by Minicircle DNA Expressing IL23. Front Immunol 2018; 9:2641. [PMID: 30487798 PMCID: PMC6246747 DOI: 10.3389/fimmu.2018.02641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 10/26/2018] [Indexed: 12/23/2022] Open
Abstract
Objective: Despite extensive studies, the precise mechanism underlying spondyloarthritis, especially ankylosing spondylitis, remains elusive. This study aimed to develop an ideal animal model for an insight into mechanism of spondyloarthritis and functional relevance of SOCS3 in spondyloarthritis. Methods: Since SOCS3 is a major regulator of IL23-STAT3 signaling, we generated SOCS3 knockdown transgenic (TG) mice for development of an animal model of spondyloarthritis. A hydrodynamic delivery method was employed to deliver minicircle DNA expressing IL23 (mc-IL23) into wild-type (WT) and the TG mice. Knockdown/overexpression systems mediated by lentivirus and retrovirus were used to determine whether SOCS3 regulated osteoblast differentiation. Results: Forced expression of IL23 induced severe joint destruction and extensive bone loss in SOCS3 knockdown TG mice, while this treatment only caused moderate symptoms in WT mice. Furthermore, severe spondyloarthritis was found in IL23-injected TG mice as compared to mild disease observed in WT controls under same condition. Moreover, our studies showed that IL23 promoted osteoblast differentiation via activation of STAT3 pathway and disruption of SOCS3 expression greatly increased phosphorylation of STAT3. In addition, silencing SOCS3 resulted in enhanced osteoblast differentiation through activation of Smad1/5/9 signaling, as evidenced by elevated phosphorylation level of Smad1/5/9. Experiments further demonstrated that SOCS3 interacted with Smad1 and thus suppressed the BMP2-Smad signaling. Conclusions: The results reveal that SOCS3 is involved in IL23-induced spondyloarthritis and acts as a key regulator of osteoblast differentiation, and suggest that SOCS3 knockdown TG mice may be an ideal animal model for further studies of spondyloarthritis.
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Affiliation(s)
- Yuhai Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Jing Ouyang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Ruoxiang Yan
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Mohamed Hassan Maarouf
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, University of Chinese Academy of Sciences, Beijing, China.,International College, University of Chinese Academy of Sciences, Beijing, China
| | - Xuefei Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, University of Chinese Academy of Sciences, Beijing, China
| | - Biao Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, University of Chinese Academy of Sciences, Beijing, China
| | - Shasha Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, University of Chinese Academy of Sciences, Beijing, China
| | - Jiayue Hu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Guijie Guo
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Jing Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Sheng-Ming Dai
- Department of Rheumatology & Immunology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Huji Xu
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, The Second Military Medical University Hospital, Shanghai, China
| | - Ji-Long Chen
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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17
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Jiang Y, Ren Y, Zhou D, Xu Y. Associations between ERAP1 polymorphisms and susceptibility to ankylosing spondylitis: A meta-analysis of East Asian Population. Medicine (Baltimore) 2018; 97:e13263. [PMID: 30461632 PMCID: PMC6393156 DOI: 10.1097/md.0000000000013263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The genetic factor is importantly enrolled in the pathogenesis of ankylosing spondylitis (AS) and haplotype leukocyte antigen (HLA)-B27 is the most well-known. However, only 1% to 5% of B27-positive individuals will develop AS, and it confers only 20% to 30% of the overall genetic risks, indicating more genes other than HLA-B27 may play important roles in AS pathologies. The present study aims to investigate whether the polymorphisms of endoplasmic reticulum aminopeptidase 1 (ERAP1) is associated with increased risk of AS susceptibility. METHODS The Cochrane library, Pubmed, and Embase databases were carefully searched for potential researches published before May 30, 2018. The title, abstract, and full text were assessed to determine whether the paper was suitable for inclusion. The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were presented to assess the associations between ERAP1 polymorphisms and AS susceptibility. RESULTS The study finally enrolled 10 papers, 4 matched single nucleotide polymorphisms (SNPs) of ERAP1 (rs27044, rs27434, rs30187, and rs27037), and a total of 30552 patients (12492 with AS and 18060 for control). No significant difference was found between the AS susceptibility and polymorphisms of rs27044 and rs27434. However, there was a significant association between ERAP1 polymorphisms rs30187 and rs27037 (T vs C, OR, 1.322, 95% CI = 1.240-10410, P <.05; T vs G, OR, 1.247, 95% CI = 1.149-1.353; P <.05; respectively) and AS susceptibility. CONCLUSION There was a significant association between ERAP1 polymorphisms (rs30187 and rs27037) and increased risk of AS susceptibility.
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Affiliation(s)
- Yuqing Jiang
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Soochow
- Department of Orthopaedics, Changzhou No.2 people's Hospital
| | - Yi Ren
- Department of Neurology, The Third Affiliated Hospital of Soochow University, Changzhou
| | - Dong Zhou
- Department of Orthopaedics, Changzhou No.2 people's Hospital
| | - Youjia Xu
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Soochow
- Osteoprosis institute of Soochow University, Soochow, China
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18
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Jeong H, Bae EK, Kim H, Lim DH, Chung TY, Lee J, Jeon CH, Koh EM, Cha HS. Spondyloarthritis features in zymosan-induced SKG mice. Joint Bone Spine 2018; 85:583-591. [DOI: 10.1016/j.jbspin.2017.11.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 11/15/2017] [Indexed: 12/17/2022]
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19
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Meng C, Bai R, Zhao Z, Huang G, Jin T, Feng W, Liu W. MMP-8 single-nucleotide polymorphisms are related to ankylosing spondylitis in Chinese Han population. Medicine (Baltimore) 2018; 97:e12136. [PMID: 30170451 PMCID: PMC6392754 DOI: 10.1097/md.0000000000012136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Ankylosing spondylitis (AS) is an extreme form of inflammatory arthritis which always leads to bony fusion of vertebral and chronic pain of back. A lot of genes including interleukin, matrix metalloproteinases (MMPs), and endoplasmic reticulum aminopeptidase were found associated with AS. MMP family members were involved in the autoimmune disease and orthopedic diseases such as rheumatoid arthritis and osteoarthritis, while few studies concentrated on the correlation between single-nucleotide polymorphisms (SNPs) in MMP and AS. In addition, there is no report on the relationship between MMP-8 and AS. To investigate the association between SNPs in MMP-8 and AS, we recruited 268 patients with AS and 654 healthy people to conduct a case-control study. Five SNPs including rs3740938, rs2012390, rs1940475, rs11225394, and rs11225395 of MMP-8 gene were genotyped. It was found rs3740938 of MMP-8 was associated with an increased risk of AS under the dominant model and additive model after adjustment for gender and age by performing logistic regression analysis (odds ratio [OR] = 1.49, 95% confidence interval [CI] = 1.02-2.18, P = .038; OR = 1.37, 95% CI = 1.01-1.87, P = .042, respectively). Moreover, haplotype "GGTCA" was associated with an increased risk of AS without adjustment for age and gender (OR = 1.75, 95% CI = 1.05-2.92, P = .032), while no positive result was found after adjustment for age and gender. Based on our results, our study indicates significant association between SNPs of MMP-8 and AS risk in a Chinese Han population and these results provide the first evidence that MMP-8 is correlated with AS.
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Affiliation(s)
- Chenyang Meng
- Department of Graduate School, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
- Department of Pediatric Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Rui Bai
- Department of Pediatric Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Zhenqun Zhao
- Department of Pediatric Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Guimei Huang
- Department of Administrative Affairs Office, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Tianbo Jin
- School of Life Sciences, Northwest University, Xi’an, Shaanxi, China
| | - Wei Feng
- Department of Pelvic and Acetabular Surgery, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Wanlin Liu
- Department of Pediatric Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
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20
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Lim CSE, Sengupta R, Gaffney K. The clinical utility of human leucocyte antigen B27 in axial spondyloarthritis. Rheumatology (Oxford) 2018; 57:959-968. [PMID: 29029331 DOI: 10.1093/rheumatology/kex345] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Indexed: 12/17/2022] Open
Abstract
The association between HLA-B27 and AS was first established in the early 1970s. Since then, our understanding of this disease has changed, such that we now recognize AS to be the extreme of the clinical phenotype within a disease spectrum known as axial SpA (axSpA). Recent advances in therapeutic options have driven the need for earlier diagnosis and many screening strategies have been proposed to facilitate this. In parallel, our understanding of axSpA genetics, and especially the contribution of HLA-B27, has expanded. In this article we will present and discuss the evidence supporting the use of HLA-B27 in clinical practice. We will briefly summarize the evolution of the concept of axSpA, the prevalence of HLA-B27 and axSpA and the potential role of HLA-B27 in the aetiopathogenesis of axSpA and focus on the utility of HLA-B27 in everyday clinical practice.
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Affiliation(s)
| | - Raj Sengupta
- Rheumatology Department, Royal National Hospital for Rheumatic Diseases, Bath, UK
| | - Karl Gaffney
- Rheumatology Department, Norfolk & Norwich University Hospital, Norwich, UK
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21
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Amstutz U, Schaerer D, Andrey G, Wirthmueller U, Largiadèr CR. An SSP-PCR method for the rapid detection of disease-associated alleles HLA-A*29 and HLA-B*51. HLA 2018; 92:90-93. [PMID: 29766667 DOI: 10.1111/tan.13296] [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: 03/06/2018] [Revised: 04/26/2018] [Accepted: 05/07/2018] [Indexed: 11/28/2022]
Abstract
HLA-A*29 and HLA-B*51 are associated with birdshot uveitis and Behçet's disease, respectively, and are used as a diagnostic criterion in patients with suspected disease, requiring their detection in diagnostic laboratories. While commercial tests for individual HLA alleles are available for other disease-associated HLA variants, no similar allele-specific assays are available for HLA-A*29 and HLA-B*51. Here, we report sequence-specific priming-polymerase chain reaction (SSP-PCR) methods for the detection of HLA-A*29 and HLA-B*51 using a single PCR reaction per allele. The assays were tested in 30 and 32 previously HLA-typed samples, respectively, representing >97% of HLA-A alleles and >93% of HLA-B alleles in a European population. A concordance of 100% was observed with previous typing results, validating these methods for use in a diagnostic or research context.
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Affiliation(s)
- U Amstutz
- University Institute of Clinical Chemistry, Center for Laboratory Medicine, Inselspital Bern University Hospital, University of Bern, Bern, Switzerland
| | - D Schaerer
- University Institute of Clinical Chemistry, Center for Laboratory Medicine, Inselspital Bern University Hospital, University of Bern, Bern, Switzerland
| | - G Andrey
- University Institute of Clinical Chemistry, Center for Laboratory Medicine, Inselspital Bern University Hospital, University of Bern, Bern, Switzerland
| | - U Wirthmueller
- University Institute of Clinical Chemistry, Center for Laboratory Medicine, Inselspital Bern University Hospital, University of Bern, Bern, Switzerland
| | - C R Largiadèr
- University Institute of Clinical Chemistry, Center for Laboratory Medicine, Inselspital Bern University Hospital, University of Bern, Bern, Switzerland
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22
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Babaie F, Hasankhani M, Mohammadi H, Safarzadeh E, Rezaiemanesh A, Salimi R, Baradaran B, Babaloo Z. The role of gut microbiota and IL-23/IL-17 pathway in ankylosing spondylitis immunopathogenesis: New insights and updates. Immunol Lett 2018; 196:52-62. [DOI: 10.1016/j.imlet.2018.01.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/16/2018] [Accepted: 01/31/2018] [Indexed: 12/16/2022]
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23
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Prodromidis AD, Charalambous CP. Is There a Genetic Predisposition to Frozen Shoulder?: A Systematic Review and Meta-Analysis. JBJS Rev 2018; 4:01874474-201602000-00004. [PMID: 27490134 DOI: 10.2106/jbjs.rvw.o.00007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Frozen shoulder is a common disorder that leads to substantial functional loss for patients by impairing activities of daily living. It also adversely affects patients and society by impairing the ability to work. Its pathogenesis is not fully understood. The aim of the present study was to perform a systematic review and meta-analysis to assess the evidence suggesting a genetic link to frozen shoulder. METHODS A literature search of MEDLINE, EMBASE, and CINAHL databases using relevant keywords revealed 5506 studies. After appropriate screening of titles, abstracts, and full studies, seven studies were analyzed. RESULTS Three studies investigated rates of frozen shoulder among relatives. One study (n = 1828 twin pairs) showed an 11.6% prevalence in twin pairs and demonstrated a heritability of 42% for frozen shoulder after adjusting for age. A second study (n = 273) showed that 20% of patients with frozen shoulder had a positive family history involving a first-degree relative. The relative risk of frozen shoulder was 4:1 when all patients with frozen shoulder were compared with a control population. A third study (n = 87) showed that 29% of patients with frozen shoulder had a first-degree relative with frozen shoulder. Two studies evaluated racial predilection for frozen shoulder. One study (n = 50) reported a substantially higher number of white patients (76%) with frozen shoulder than black patients (24%). A second study (n = 87) showed that being born or having parents or grandparents born in the British Isles were risk factors for frozen shoulder. Four immunological studies investigated human leukocyte antigen (HLA)-B27 as a risk factor for frozen shoulder. Meta-analysis of two of these studies with clearly defined controls showed significantly higher rates of HLA-B27 positivity in patients with frozen shoulder as compared with controls (p < 0.001). CONCLUSION The limited evidence points toward a genetic link to frozen shoulder. We used family history and racial predilection as markers for genetic association, both of which indicated the presence of a genetic predisposition to frozen shoulder. However, as there is a lack of unbiased genetic approaches, there is an opportunity for genome-wide association studies to address definitively the molecular genetics of frozen shoulder. Such studies may eventually lead to a better understanding of the pathogenesis of frozen shoulder and the development of novel therapeutic interventions. LEVEL OF EVIDENCE Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Apostolos D Prodromidis
- Orthopaedic Department, Blackpool Victoria Hospital, Blackpool, UK.,School of Medicine and Dentistry, University of Central Lancashire, Preston, UK
| | - Charalambos P Charalambous
- Orthopaedic Department, Blackpool Victoria Hospital, Blackpool, UK.,School of Medicine and Dentistry, University of Central Lancashire, Preston, UK.,Institute of Inflammation and Repair, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK
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24
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Mahendran SM, Oikonomopoulou K, Diamandis EP, Chandran V. Synovial fluid proteomics in the pursuit of arthritis mediators: An evolving field of novel biomarker discovery. Crit Rev Clin Lab Sci 2017; 54:495-505. [DOI: 10.1080/10408363.2017.1408561] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shalini M. Mahendran
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Canada
| | - Katerina Oikonomopoulou
- Centre for Prognosis Studies in Rheumatic Diseases, Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, Canada
| | - Eleftherios P. Diamandis
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Canada
- Department of Clinical Biochemistry, University Health Network, Toronto, Canada
| | - Vinod Chandran
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
- Centre for Prognosis Studies in Rheumatic Diseases, Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, Canada
- Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Canada
- Institute of Medical Science, University of Toronto, Toronto, Canada
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25
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Roozbehkia M, Mahmoudi M, Aletaha S, Rezaei N, Fattahi MJ, Jafarnezhad-Ansariha F, Barati A, Mirshafiey A. The potent suppressive effect of β-d-mannuronic acid (M2000) on molecular expression of the TLR/NF-kB Signaling Pathway in ankylosing spondylitis patients. Int Immunopharmacol 2017; 52:191-196. [PMID: 28938189 DOI: 10.1016/j.intimp.2017.08.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/13/2017] [Accepted: 08/22/2017] [Indexed: 12/17/2022]
Abstract
Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease characterized by the inflammation of sacroiliac joints and axial skeleton. A combination of genetic, environmental and immunological factors are involved in AS's pathogenesis. TLRs are type I transmembrane glycoproteins that play a crucial role in the innate immune responses against invading pathogens. Observational studies have demonstrated a possible association between TLR dysregulation and AS. The β-d-mannuronic acid (M2000), as a novel NSAID with immunosuppressive property, has shown an inhibitory effect on Toll-like receptor (TLR) 2, 4 signaling in HEK293 cells. In the present study, we investigated the gene expression of Myd88, IKB-alpha, NF-kB and MAPK14 (genes of the TLR/NF-kB Signaling Pathway) in AS patients in comparison to healthy subjects and also the effect of β-d-mannuronic acid on disease activity and mRNA expression of these molecules in affected patients. We showed for the first time that the gene expression level of Myd88, IKB-alpha, NF-kB and MAPK14 was higher in AS patients in comparison to healthy subjects. Moreover we confirmed that the β-d-mannuronic acid not just reduced significantly the disease activity of AS individuals compared to placebo, but also it could significantly decrease the expression level of genes associated with TLR/NF-kB Signaling Pathway in treated patients with M2000. These results may provide a new therapeutic approach to attenuate inflammatory responses in AS patients, (Identified; IRCT 2013062213739N1).
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Affiliation(s)
- Maryam Roozbehkia
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Mahmoudi
- Rheumatology Research Center, Shariati Hospital, Tehran University of Medical Science, Tehran, Iran.
| | - Somaye Aletaha
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Sheffield, UK
| | - Mohammad Javad Fattahi
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Anis Barati
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Mirshafiey
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
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Wang CM, Wang SH, Jan Wu YJ, Lin JC, Wu J, Chen JY. Human Leukocyte Antigen C*12:02:02 and Killer Immunoglobulin-Like Receptor 2DL5 are Distinctly Associated with Ankylosing Spondylitis in the Taiwanese. Int J Mol Sci 2017; 18:E1775. [PMID: 28812990 PMCID: PMC5578164 DOI: 10.3390/ijms18081775] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 08/11/2017] [Accepted: 08/12/2017] [Indexed: 11/21/2022] Open
Abstract
Human leukocyte antigen (HLA) class I ligands and Killer immunoglobulin-like receptors (KIRs) regulate the cytolytic activity of natural killer (NK) cells and certain T cells. We examined their genetic predisposition to disease susceptibility and clinical phenotypes in Taiwanese ankylosing spondylitis (AS) patients. KIR genotyping and Human Leucocyte Antigen C (HLA-C) sequencing were performed in 653 Taiwanese AS patients and 952 healthy controls. KIR genotype distributions and HLA-C allele frequencies were compared in patients and controls and among patients with and without HLA-B27 positivity, early age onset and spinal syndesmophytes. HLA-C alleles were functionally characterized using 3D structural modelling with peptide simulation. This study discovered that the HLA-C*12:02:02 allele (43.42% vs. 3.31%; p < 0.00001 odds ratio (OR), 16.88; 95% confidence intervals (CI): 11.27-25.28) confers a strong risk for Taiwanese AS development. The 3D modelling results identified four unique amino acid polymorphisms, Ala73, Trp156, Arg219 and Met304, that may affect the function of the HLA-C*12:02:02 allele. KIR2DL5 (p = 0.0047; pFDR = 0.0423) and the KIR Bx haplotype (p = 0.0000275) were protective against Taiwanese AS, while KIR 2DS4/1D (22 base pair truncated deletion; p = 0.0044; pFDR = 0.1998) appeared to be a risk factor for it. KIR2DL5 combined with the HLA-C1/C2 heterozygous genotype showed a protective effect (AS 5.97% vs. normal 11.66%; p = 0.002; pFDR = 0.0127, OR, 0.48 95% CI: 0.33-0.70); in contrast, KIR 2DS4/1D combined with the HLA-C1C1 homozygous genotype (AS 45.33% vs. normal 35.92%; p = 0.002; pFDR = 0.0127, OR, 1.48 95% CI: 1.21-1.81) represented a risk factor for AS development. Our data suggested that interactions between KIRs and their cognate HLA-C ligands may contribute to the pathogenesis of AS.
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Affiliation(s)
- Chin-Man Wang
- Department of Rehabilitation, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33375, Taiwan.
| | - Sheng-Hung Wang
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan 33375, Taiwan.
| | - Yeong-Jian Jan Wu
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 5, Fu-Shin St. Kuei-Shan, Taoyuan 33375, Taiwan.
| | - Jing-Chi Lin
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 5, Fu-Shin St. Kuei-Shan, Taoyuan 33375, Taiwan.
| | - Jianming Wu
- Department of Veterinary and Biomedical Sciences, Department of Medicine, University of Minnesota, St. Paul, MN 55108, USA.
| | - Ji-Yih Chen
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 5, Fu-Shin St. Kuei-Shan, Taoyuan 33375, Taiwan.
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Wang Y, Yi XD, Lu HL. Influence of CYP2C9 and COX-2 Genetic Polymorphisms on Clinical Efficacy of Non-Steroidal Anti-Inflammatory Drugs in Treatment of Ankylosing Spondylitis. Med Sci Monit 2017; 23:1775-1782. [PMID: 28403136 PMCID: PMC5398431 DOI: 10.12659/msm.900271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background The aim of this study was to evaluate the relationships of CYP2C9 and COX-2 genetic polymorphisms with therapeutic efficacy of non-steroidal anti-inflammatory drugs (NSAIDs) in treatment of ankylosing spondylitis (AS). Material/Methods We enrolled 130 AS inpatients and outpatients in the Arthritis and Rheumatism Department of Peking University First Hospital and 106 healthy people getting routine check-ups between September 2013 and July 2014. CYP2C9 and COX-2 genetic polymorphisms were detected by PCR-RFLP. All AS patients underwent medical treatment and 12-week follow-up treatment. Score differences of BASDAI, ASAS20, ASAS50, and ASAS70 for AS patients with different genotypes before and after treatment were compared. Results In terms of COX-2-1290A/G and -1195G/A gene polymorphism genotype and allele frequency, the case group and control group were obviously different (all P<0.05), but CYP2C9*3 polymorphism genotype and allele frequency were not statistically different between the 2 groups (P>0.05). AS patients had improved BASDAI, ASAS20, ASAS50, and ASAS70 scores after they received NSAID treatment (all P<0.05). Furthermore, the efficacy of NSAID in treatment of AS and COX-2 gene −1290A/G and −1195G/A polymorphism were associated (all P<0.05), but it is not associated with CYP2C9 *3 polymorphism (all P>0.05). Conclusions COX-2-1290A/G and -1195G/A polymorphism may increase AS risk and they both can be considered as biological indicators for prediction of efficacy of NSAIDs in treatment of AS.
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Affiliation(s)
- Yu Wang
- Department of Orthopaedics, Peking University First Hospital, Beijing, China (mainland)
| | - Xiao-Dong Yi
- Department of Orthopaedics, Peking University First Hospital, Beijing, China (mainland)
| | - Hai-Lin Lu
- Department of Orthopaedics, Peking University First Hospital, Beijing, China (mainland)
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Abstract
BACKGROUND A large amount of research has been devoted to the detection and investigation of epistatic interactions in genome-wide association studies (GWASs). Most of the literature focuses on low-order interactions between single-nucleotide polymorphisms (SNPs) with significant main effects. RESULTS In this paper we propose an original approach for detecting epistasis at the gene level, without systematically filtering on significant genes. We first compute interaction variables for each gene pair by finding its Eigen-Epistasis component, defined as the linear combination of Gene SNPs having the highest correlation with the phenotype. The selection of significant effects is done using a penalized regression method based on Group Lasso controlling the False Discovery Rate. CONCLUSION The method is tested against two recent alternative proposals from the literature using synthetic data, and shows good performances in different settings. We demonstrate the power of our approach by detecting new gene-gene interactions on three genome-wide association studies.
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Lack of Association between Genetic Polymorphisms of JAK-STAT Signaling Pathway Genes and Acute Anterior Uveitis in Han Chinese. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5896906. [PMID: 27965977 PMCID: PMC5124643 DOI: 10.1155/2016/5896906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 09/14/2016] [Accepted: 10/16/2016] [Indexed: 12/02/2022]
Abstract
Purpose. This study aimed to investigate the association between single nucleotide polymorphisms (SNPs) of JAK-STAT signaling pathway genes and acute anterior uveitis (AAU) with or without ankylosing spondylitis (AS) in the Han Chinese population. Methods. Eleven SNPs of the JAK1, JAK2, STAT1, IRF1, and NOS2 genes were analyzed in 443 AAU patients with AS, 486 AAU patients without AS, and 714 healthy controls. Genotyping was performed by PCR-RFLP assay or TaqMan® probe assay. The Chi-squared (χ2) test and multivariate logistic regression analysis were used to compare the distributions of alleles and genotypes between patients and controls. P values were adjusted using Bonferroni correction. Results. We did not observe significant differences in the genotype and allele frequencies of any SNP between AAU patients with or without AS and healthy controls. Stratification analyses by gender and HLA-B27 status showed a boundary significant association between two SNPs (rs10975003 and rs10758669) in JAK2 and AAU (P = 0.052 and P = 0.053, resp.). Conclusions. Our results indicated that genetic polymorphisms of the JAK-STAT signaling pathway genes may not be associated with AAU in the Han Chinese population.
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Wootla B, Denic A, Watzlawik JO, Warrington AE, Zoecklein LJ, Papke-Norton LM, David C, Rodriguez M. Human class I major histocompatibility complex alleles determine central nervous system injury versus repair. J Neuroinflammation 2016; 13:293. [PMID: 27855706 PMCID: PMC5112886 DOI: 10.1186/s12974-016-0759-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 11/03/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND We investigated the role of human HLA class I molecules in persistent central nervous system (CNS) injury versus repair following virus infection of the CNS. METHODS Human class I A11+ and B27+ transgenic human beta-2 microglobulin positive (Hβ2m+) mice of the H-2 b background were generated on a combined class I-deficient (mouse beta-2 microglobulin deficient, β2m0) and class II-deficient (mouse Aβ0) phenotype. Intracranial infection with Theiler's murine encephalomyelitis virus (TMEV) in susceptible SJL mice results in acute encephalitis with prominent injury in the hippocampus, striatum, and cortex. RESULTS Following infection with TMEV, a picornavirus, the Aβ0.β2m0 mice lacking active immune responses died within 18 to 21 days post-infection. These mice showed severe encephalomyelitis due to rapid replication of the viral genome. In contrast, transgenic Hβ2m mice with insertion of a single human class I MHC gene in the absence of human or mouse class II survived the acute infection. Both A11+ and B27+ mice significantly controlled virus RNA expression by 45 days and did not develop late-onset spinal cord demyelination. By 45 days post-infection (DPI), B27+ transgenic mice showed almost complete repair of the virus-induced brain injury, but A11+ mice conversely showed persistent severe hippocampal and cortical injury. CONCLUSIONS The findings support the hypothesis that the expression of a single human class I MHC molecule, independent of persistent virus infection, influences the extent of sub frequent chronic neuronal injury or repair in the absence of a class II MHC immune response.
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Affiliation(s)
- Bharath Wootla
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.,Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.,Center for Regenerative Medicine, Neuroregeneration, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Aleksandar Denic
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.,Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Jens O Watzlawik
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road S, Jacksonville, FL, 32224, USA
| | - Arthur E Warrington
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.,Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Laurie J Zoecklein
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.,Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Louisa M Papke-Norton
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.,Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Chella David
- Department of Immunology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Moses Rodriguez
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. .,Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. .,Department of Immunology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
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A complex role of anthrax toxin receptor 2 polymorphisms and capillary morphogenesis protein 2 in ankylosing spondylitis pathogenesis. Clin Rheumatol 2016; 35:2243-50. [PMID: 26728147 DOI: 10.1007/s10067-015-3158-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 12/07/2015] [Accepted: 12/21/2015] [Indexed: 01/17/2023]
Abstract
This study investigated the role of anthrax toxin receptor 2 (ANTXR2) gene polymorphisms and capillary morphogenesis protein 2 (CMG2) expression in susceptibility and pathogenesis to ankylosing spondylitis (AS) in the Han Chinese in Beijing. A case-control study was performed using 602 AS patient samples meeting the revised New York criterion and 619 matched controls from Han Chinese individuals. Nineteen single-nucleotide polymorphisms (SNPs) of ANTXR2 genes were selected and genotyped using the Sequenom iPlex platform. Real-time polymerase chain reaction and flow cytometry were performed to investigate the impact of SNP polymorphisms on ANTXR2 transcription and CMG2 expression, respectively. The association of variants with AS was examined with UNPHASED 3.1.5. A novel association was observed between AS and three SNPs in the ANTXR2 gene (rs4690127, rs6823031, and rs4333130; P = 0.004, 0.011, and 0.013, respectively), confirming the association between rs433130 and AS in the Han Chinese. The strongest haplotype association was observed with rs4690127-rs6823031-rs4333130 (P = 2.5 × 10(-4)). rs6534639 and rs4333130 showed a cis-interaction (P = 0.027) in AS. ANTXR2 messenger RNA (mRNA) expression was significantly higher in the AS group than in the control group (P = 0.039). CMG2 expression in the lipopolysaccharide (LPS)-stimulated group was significantly lower than that in the control group (P = 0.018). This study reports a novel association between ANTXR2 and AS in the Han Chinese. ANTXR2 genetic polymorphisms affect ANTXR2 mRNA transcription and CMG2 expression. The opposing results observed for ANTXR2 transcription and CMG2 expression suggest a complex role of ANTXR2 polymorphisms in AS pathogenesis.
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Vidal-Castiñeira JR, López-Vázquez A, Diaz-Peña R, Diaz-Bulnes P, Martinez-Camblor P, Coto E, Coto-Segura P, Bruges-Armas J, Pinto JA, Blanco FJ, Sánchez A, Mulero J, Queiro R, Lopez-Larrea C. A Single Nucleotide Polymorphism in the Il17ra Promoter Is Associated with Functional Severity of Ankylosing Spondylitis. PLoS One 2016; 11:e0158905. [PMID: 27415816 PMCID: PMC4945092 DOI: 10.1371/journal.pone.0158905] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 06/23/2016] [Indexed: 11/24/2022] Open
Abstract
The aim of this study was to identify new genetic variants associated with the severity of ankylosing spondylitis (AS). We sequenced the exome of eight patients diagnosed with AS, selected on the basis of the severity of their clinical parameters. We identified 27 variants in exons and regulatory regions. The contribution of candidate variants found to AS severity was validated by genotyping two Spanish cohorts consisting of 180 cases/300 controls and 419 cases/656 controls. Relationships of SNPs and clinical variables with the Bath Ankylosing Spondylitis Disease Activity and Functional Indices BASDAI and BASFI were analyzed. BASFI was standardized by adjusting for the duration of the disease since the appearance of the first symptoms. Refining the analysis of SNPs in the two cohorts, we found that the rs4819554 minor allele G in the promoter of the IL17RA gene was associated with AS (p<0.005). This variant was also associated with the BASFI score. Classifying AS patients by the severity of their functional status with respect to BASFI/disease duration of the 60th, 65th, 70th and 75th percentiles, we found the association increased from p60 to p75 (cohort 1: p<0.05 to p<0.01; cohort 2: p<0.01 to p<0.005). Our findings indicate a genetic role for the IL17/ILRA axis in the development of severe forms of AS.
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Affiliation(s)
| | | | - Roberto Diaz-Peña
- Immunology Department, Hospital Universitario Central de Asturias, Oviedo, Spain
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Paula Diaz-Bulnes
- Immunology Department, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Pablo Martinez-Camblor
- Department of Statistics, Hospital Universitario Central de Asturias, Oviedo, Spain
- Facultad de Ciencias de la Educación, Universidad Autónoma de Chile, Santiago de Chile, Chile
| | - Eliecer Coto
- Molecular Genetics Department, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Pablo Coto-Segura
- Dermatology II Department, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Jacome Bruges-Armas
- Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Jose Antonio Pinto
- Rheumatology Service, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC), A Coruña, Spain
| | - Francisco Jose Blanco
- Rheumatology Service, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC), A Coruña, Spain
| | - Alejandra Sánchez
- Rheumatology Service, Puerta del Hierro University Hospital, Majadahonda, Madrid
| | - Juan Mulero
- Rheumatology Service, Puerta del Hierro University Hospital, Majadahonda, Madrid
| | - Ruben Queiro
- Rheumatology Service, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Carlos Lopez-Larrea
- Immunology Department, Hospital Universitario Central de Asturias, Oviedo, Spain
- Fundación Renal Iñigo Álvarez de Toledo, Madrid, Spain
- * E-mail:
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Forbes JD, Van Domselaar G, Bernstein CN. The Gut Microbiota in Immune-Mediated Inflammatory Diseases. Front Microbiol 2016; 7:1081. [PMID: 27462309 PMCID: PMC4939298 DOI: 10.3389/fmicb.2016.01081] [Citation(s) in RCA: 269] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 06/28/2016] [Indexed: 12/17/2022] Open
Abstract
The collection of microbes and their genes that exist within and on the human body, collectively known as the microbiome has emerged as a principal factor in human health and disease. Humans and microbes have established a symbiotic association over time, and perturbations in this association have been linked to several immune-mediated inflammatory diseases (IMID) including inflammatory bowel disease, rheumatoid arthritis, and multiple sclerosis. IMID is a term used to describe a group of chronic, highly disabling diseases that affect different organ systems. Though a cornerstone commonality between IMID is the idiopathic nature of disease, a considerable portion of their pathobiology overlaps including epidemiological co-occurrence, genetic susceptibility loci and environmental risk factors. At present, it is clear that persons with an IMID are at an increased risk for developing comorbidities, including additional IMID. Advancements in sequencing technologies and a parallel explosion of 16S rDNA and metagenomics community profiling studies have allowed for the characterization of microbiomes throughout the human body including the gut, in a myriad of human diseases and in health. The main challenge now is to determine if alterations of gut flora are common between IMID or, if particular changes in the gut community are in fact specific to a single disease. Herein, we review and discuss the relationships between the gut microbiota and IMID.
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Affiliation(s)
- Jessica D. Forbes
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, WinnipegMB, Canada
- National Microbiology Laboratory, Public Health Agency of Canada, WinnipegMB, Canada
| | - Gary Van Domselaar
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, WinnipegMB, Canada
- National Microbiology Laboratory, Public Health Agency of Canada, WinnipegMB, Canada
| | - Charles N. Bernstein
- Department of Internal Medicine and the IBD Clinical and Research Centre, University of Manitoba, WinnipegMB, Canada
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Yigit S, Inanir A, Tural S, Filiz B, Tekcan A. The effect of IL-4 and MTHFR gene variants in ankylosing spondylitis. Z Rheumatol 2015; 74:60-6. [PMID: 25060515 DOI: 10.1007/s00393-014-1403-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE Ankylosing Spondylitis (AS) is a chronic inflammatory rheumatic disease that characteristically affects the sacroiliac joints and the spine. The exact pathogenesis of AS remains poorly understood, but genetic factors play a key role in disease development. Several genes have been consistently associated with susceptibility to AS. This study was conducted in Turkish AS patients to determine the frequency of the methylenetetrahydrofolate reductase (MTHFR) gene C677T and interleukin-4 (IL-4) gene 70 bp variable number of tandem repeats (VNTR) variants, as well as their association with clinical characteristics. METHODS Genomic DNA obtained from 272 persons (122 AS patients and 150 healthy controls) was used in this study. Genomic DNA was isolated and genotyped using a polymerase chain reaction (PCR)-based restriction fragment length polymorphism (RFLP) assay for the MTHFR C677T and IL-4 70 bp VNTR gene variants, which were determined using specific PCR primers. RESULTS There was statistically significant difference between the groups with respect to MTHFR genotype distribution (p = 0.02) and allele frequencies (p < 0.001). When we examined MTHFR and IL-4 genotype frequencies according to clinical characteristics, we found an association between the homozygous MTHFR TT genotype and ocular involvement, although this did not reach statistical significance (p = 0.02). However, we did not find any difference between the groups with respect to IL-4 genotype distribution or allele frequencies and clinical characteristics (p > 0.05). CONCLUSION Our findings suggest that there is an association of the MTHFR gene C677T polymorphism with the susceptibility of a person for development of AS. However, the IL-4 gene is not associated with AS within the same population.
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Affiliation(s)
- S Yigit
- Faculty of Medicine, Department of Medical Biology, Gaziosmanpaşa University, Tokat, Turkey,
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Maruhashi T, Kaifu T, Iwakura Y. DCIR in the "osteo-immune" system. Oncotarget 2015; 6:34051-2. [PMID: 26462156 PMCID: PMC4741427 DOI: 10.18632/oncotarget.6043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Indexed: 11/25/2022] Open
Affiliation(s)
- Takumi Maruhashi
- Division of Immune Regulation, Institute for Genome Research, Tokushima University, Tokushima, Japan
| | - Tomonori Kaifu
- Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
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36
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Aschermann S, Englbrecht M, Bergua A, Spriewald BM, Said-Nahal R, Breban M, Schett G, Rech J. Presence of HLA-B27 is associated with changes of serum levels of mediators of the Wnt and hedgehog pathway. Joint Bone Spine 2015; 83:43-6. [PMID: 26494593 DOI: 10.1016/j.jbspin.2015.03.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 03/25/2015] [Indexed: 01/21/2023]
Abstract
BACKGROUND HLA-B27 is present in 5% of the Caucasian population and is strongly associated with the development of spondyloarthritis (SpA), a disease characterized by inflammation and substantial bone changes. We hypothesized that the presence of HLA-B27 in itself is associated with alterations of key regulatory of bone homeostasis. METHODS Sera of 241 individuals were assessed for the serum levels of Wnt pathway regulators, sclerostin and dickkopf (Dkk)-1 as well as Indian hedgehog (IHH) and collagen type I cleavage products (CTX1). Of the 151 HLA-B27+ subjects, 31 had SpA, 30 had anterior uveitis, 30 were healthy individuals and 60 healthy siblings of patients with SpA. RESULTS Sclerostin levels were significantly (P<0.001) lower in HLA-B27+ subjects (314±21pg/mL) compared to HLA-B27 negative controls (mean±SEM: 492±30pg/mL), no matter if subjects were either healthy, or affected by SpA or uveitis. Similar results were found for Dkk-1. No differences between the groups with respect to the bone resorption marker CTX1 were found. In contrast, IHH levels were significantly (P<0.001) higher in the carriers of HLA-B27 than in the negative controls. CONCLUSIONS Changes in key regulators of the Wnt pathway as well as IHH, a molecule regulating endochondral ossification, are found in HLA-B27 carriers, independent if they were healthy or affected by uveitis or SpA.
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Affiliation(s)
- Sarah Aschermann
- Department of Internal Medicine 3, University Clinic of Erlangen-Nuremberg, Erlangen 91054, Germany
| | - Matthias Englbrecht
- Department of Internal Medicine 3, University Clinic of Erlangen-Nuremberg, Erlangen 91054, Germany
| | - Antonio Bergua
- Department of Ophthalmology, University Clinic of Erlangen-Nuremberg, Erlangen 91054, Germany
| | - Bernd M Spriewald
- Department of Internal Medicine 5, Haematooncology, University Clinic of Erlangen-Nuremberg, Erlangen 91054, Germany
| | - Rhula Said-Nahal
- Department of Rheumatology, Université Versailles - Saint-Quentin, Ambroise-Paré Hospital, 92104 Boulogne-Billancourt, France
| | - Maxime Breban
- Department of Rheumatology, Université Versailles - Saint-Quentin, Ambroise-Paré Hospital, 92104 Boulogne-Billancourt, France
| | - Georg Schett
- Department of Internal Medicine 3, University Clinic of Erlangen-Nuremberg, Erlangen 91054, Germany.
| | - Jürgen Rech
- Department of Internal Medicine 3, University Clinic of Erlangen-Nuremberg, Erlangen 91054, Germany
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Samartzis D, Borthakur A, Belfer I, Bow C, Lotz JC, Wang HQ, Cheung KMC, Carragee E, Karppinen J. Novel diagnostic and prognostic methods for disc degeneration and low back pain. Spine J 2015; 15:1919-32. [PMID: 26303178 PMCID: PMC5473425 DOI: 10.1016/j.spinee.2014.09.010] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 09/09/2014] [Indexed: 02/06/2023]
Affiliation(s)
- Dino Samartzis
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Professorial Block, 5th Floor, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, China; The Laboratory and Clinical Research Institute for Pain, The University of Hong Kong, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, China.
| | - Ari Borthakur
- Center for Magnetic Resonance and Optical Imaging, Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, 3535 Market Street, Mezzanine, Philadelphia, PA, 19104, USA
| | - Inna Belfer
- Department of Anesthesiology, University of Pittsburgh, 4200 Fifth Ave, Pittsburgh, PA 15260, USA
| | - Cora Bow
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Professorial Block, 5th Floor, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, China
| | - Jeffrey C Lotz
- Department of Orthopaedic Surgery, University of California at San Francisco, 500 Parnassus Ave, San Francisco, CA 94143, USA
| | - Hai-Qiang Wang
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No. 169, Changle West Road, Xi'an, Shaanxi, 710032, P.R. China
| | - Kenneth M C Cheung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Professorial Block, 5th Floor, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, China
| | - Eugene Carragee
- Department of Orthopaedic Surgery, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| | - Jaro Karppinen
- Medical Research Center Oulu, University of Oulu, Oulu University Hospital, Kajaanintie 50, 90220 Oulu, Finland
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Disorders of MicroRNAs in Peripheral Blood Mononuclear Cells: As Novel Biomarkers of Ankylosing Spondylitis and Provocative Therapeutic Targets. BIOMED RESEARCH INTERNATIONAL 2015; 2015:504208. [PMID: 26273623 PMCID: PMC4529895 DOI: 10.1155/2015/504208] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 09/13/2014] [Accepted: 09/14/2014] [Indexed: 12/20/2022]
Abstract
Background. MicroRNAs can potentially regulate every aspect of cellular activity. In this study, we investigated whether AS pathogenesis involves microRNAs disorders. Result. The expression of 2 microRNAs, hsa-miR-126-3p and hsa-miR-29a, was significantly lower in active AS group before etanercept therapy than in control group. Marched fold changes of them were 3.76 and 16.22. Moreover, expressions of hsa-miR-126-3p and hsa-miR-29a were dramatically upregulated after 12-weeks etanercept treatment. Fold changes were 2.20 and 3.18. All regulations of microRNAs expression mentioned before were statistically significant (fold change >2 and P < 0.05). The expression disorders of the 2 microRNAs did not statistically significantly correlated with BASDAI, CRP, and ESR. Conclusion. AS pathogenesis involved dysregulation of microRNAs. Hsa-miR-126-3p and hsa-miR-29a will probably become the potential biomarkers and provocative therapeutic targets of AS.
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Wu J, Zhang L, Zhou Y. The association between CTLA-4 (+49 A/G) polymorphism and susceptibility to ankylosing spondylitis: a meta-analysis. Int J Rheum Dis 2015; 19:1237-1243. [PMID: 26176417 DOI: 10.1111/1756-185x.12705] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian Wu
- Department of Orthopaedic Surgery; Beijing Jishuitan Hospital; Fourth Clinical College of Peking University; Beijing China
| | - Liang Zhang
- Department of Orthopaedic Surgery; Beijing Jishuitan Hospital; Fourth Clinical College of Peking University; Beijing China
| | - Yixin Zhou
- Department of Orthopaedic Surgery; Beijing Jishuitan Hospital; Fourth Clinical College of Peking University; Beijing China
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Díaz-Peña R, Vidal-Castiñeira JR, Mulero J, Sánchez A, Queiro R, López-Larrea C. Activating killer immunoglobulin-like receptors genes are associated with increased susceptibility to ankylosing spondylitis. Clin Exp Immunol 2015; 180:201-6. [PMID: 25491925 DOI: 10.1111/cei.12568] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2014] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was to analyse the association of specific killer cell immunoglobulin-like receptors (KIR) genes and haplotypes with susceptibility to ankylosing spondylitis (AS) and its different clinical manifestations in a Spanish population. The presence or absence of all KIR genes was studied for their association with AS. A total of 176 patients with AS and 435 healthy control subjects were selected for this study based on clinical criteria. The commercial KIR-sequence-specific oligonucleotides (SSO) typing kit was used to investigate KIR typing. Frequencies of KIR2DS1 and KIR3DS1 genes were increased significantly in patients compared with healthy controls [52·8 versus 38·2%, PBonf < 0·01, odds ratio (OR) = 1·81 (1·28-2·59); 51·7 versus 37·5%, PBonf < 0·01, OR = 1·79 (1·25-2·54)]. Moreover, the frequency of activating genotypes in the AS patient group was significantly higher than in the healthy control group (P < 0·05). KIR2DS1 and KIR3DS1, in addition to human leucocyte antigen (HLA)-B27, may play an important role in the pathogenesis of AS. However, we show that the contribution of the KIR genes to AS susceptibility extends beyond the association with individual KIRs, with an imbalance between activating and inhibitory KIR genes seeming to influence the susceptibility to AS.
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Affiliation(s)
- R Díaz-Peña
- Department of Immunology, Hospital Universitario Central de Asturias, Oviedo, Spain; Faculty of Health Sciences, Universidad Autónoma de Chile, Talca, Chile
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Sandhya P, Danda D, Jeyaseelan L. Are Indian patients with juvenile-onset ankylosing spondylitis taller than reference population ? Indian J Med Res 2015; 141:446-53. [PMID: 26112846 PMCID: PMC4510725 DOI: 10.4103/0971-5916.159295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background & objectives: Paucity of growth retardation has been observed by us in patients with juvenile-onset ankylosing spondylitis (JAS) in a tertiary care health centre in south India. We, therefore, undertook this pilot study to assess and compare anthropometry of patients with JAS who were 15 yr and older with that of adult onset ankylosing spondylitis (AAS) and matching Indian reference population. Methods: Consecutive male patients (December 2009- October 2012) with JAS and AAS fulfilling Modified New York Criteria were selected after applying inclusion and exclusion criteria. Demography and anthropometry were noted. Height of both patient groups as well as their parents and siblings were compared with that of the reference population. Mid-parental height and delta height were derived. Those with delta height of >8.5 cm were compared with the remaining. Multivariate logistic regression was done for variables that were found to be significant by chi-square in bivariate analysis. Similar analysis was done for BMI also. Results: There was no significant difference in anthropometric variables between JAS and AAS groups. Twenty eight of the 30 (93.33%) JAS patients were taller as compared to the reference population. Twenty six (86.67%) AAS patients were taller than the reference population. The mean heights of JAS (170.67 ± 6.94 cm) and AAS (168.2 ± 5.94 cm) patients were significantly higher than the reference value of 163.11 cm; both P<0.001. Logistic regression revealed that tallness in JAS was associated positively with hypermobility (OR=23.46,95%CI 1.2-447.2, P=0.036). No significant association was detected for height in AAS and for BMI in both JAS and AAS groups. Interpretation & conclusions: No growth retardation was seen in patients with JAS in our study. Majority of patients with JAS and AAS were taller than reference population. The difference between mean height of JAS and AAS was not significant. Larger studies involving different populations are required to confirm these findings.
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Affiliation(s)
| | - Debashish Danda
- Department of Rheumatology & Clinical Immunology, Christian Medical College & Hospital, Vellore, India
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Zhao H, Wang D, Fu D, Xue L. Predicting the potential ankylosing spondylitis-related genes utilizing bioinformatics approaches. Rheumatol Int 2015; 35:973-9. [PMID: 25432079 DOI: 10.1007/s00296-014-3178-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 11/11/2014] [Indexed: 02/06/2023]
Abstract
Given that ankylosing spondylitis (AS) occurs in approximately 5 out of 1,000 adults of European descent and the unclear pathogenesis, the aim of the research was to further predict the molecular mechanism of this disease. The Affymetrix chip data GSE25101 were available from Gene Expression Omnibus database. First of all, differentially expressed genes (DEGs) were identified by Limma package in R. Moreover, DAVID was used to perform gene set enrichment analysis of DEGs. In addition, miRanda, miRDB, miRWalk, RNA22 and TargetScan were applied to predict microRNA-target associations. Meanwhile, STRING 9.0 was utilized to collect protein-protein interactions (PPIs) with confidence score >0.4. Then, the PPI networks for up- and down-regulated genes were constructed, and the clustering analysis was undergone using ClusterONE. Finally, protein-domain enrichment analysis of modules was conducted using DAVID. Total 145 DEGs were identified, including 103 up-regulated and 42 down-regulated genes. These DEGs were significantly enriched in phosphorylation (p = 1.21E-05) and positive regulation of gene expression (p = 1.25E-03). Furthermore, one module was screened out from the up-regulated network, which contained 39 nodes and 205 edges. Moreover, the nodes in the module were significantly enriched in ribosomal protein (RPL17, ribosomal protein L17 and MRPL22, mitochondrial ribosomal protein L22) and proteasome (PSMA6, proteasome subunit, alpha type 6, PSMA4)-related domains. Our findings that might explore the potential pathogenesis of AS and RPL17, MRPL22, PSMA6 and PSMA4 have the potential to be the biomarkers for the disease.
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Affiliation(s)
- Hao Zhao
- Department of Arthritis Emergency, Guanghua Integrative Medicine Hospital, Changning District, Shanghai, China,
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Pithukpakorn M, Roothumnong E, Angkasekwinai N, Suktitipat B, Assawamakin A, Luangwedchakarn V, Umrod P, Thongnoppakhun W, Foongladda S, Suputtamongkol Y. HLA-DRB1 and HLA-DQB1 Are Associated with Adult-Onset Immunodeficiency with Acquired Anti-Interferon-Gamma Autoantibodies. PLoS One 2015; 10:e0128481. [PMID: 26011559 PMCID: PMC4444022 DOI: 10.1371/journal.pone.0128481] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 04/27/2015] [Indexed: 11/29/2022] Open
Abstract
Recently a newly identified clinical syndrome of disseminated non-tuberculous mycobacterial diseases (with or without other opportunistic infections in adult patients who were previously healthy, has been recognized in association with an acquired autoantibody to interferon-gamma. This syndrome is emerging as an important cause of morbidity and mortality, especially among people of Asian descent. Trigger for the production of this autoantibody remains unknown, but genetic factors are strongly suspected to be involved. We compared HLA genotyping between 32 patients with this clinical syndrome, and 38 controls. We found that this clinical syndrome was associated with very limited allele polymorphism, with HLA-DRB1 and DQB1 alleles, especially HLA-DRB1*15:01, DRB1*16:02, DQB1*05:01 and DQB1*05:02. Odds ratio of DRB1*15:01, DRB1*16:02, DQB1*05:01 and DQB1*05:02 were 7.03 (95% CI, 2.18–22.69, P<0.0001, 9.06 (95% CI, 2.79–29.46, P<0.0001), 6.68 (95% CI, 2.29–19.52, P = 0.0004), and 6.64 (95% CI, 2.30–19.20, P = 0.0004), respectively. Further investigation is warranted to provide better understanding on pathogenesis of this association.
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Affiliation(s)
- Manop Pithukpakorn
- Division of Medical Genetics, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Ekkapong Roothumnong
- Division of Medical Genetics, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Division of Molecular Genetics, Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nasikarn Angkasekwinai
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Bhoom Suktitipat
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Anunchai Assawamakin
- Division of Molecular Genetics, Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Voravich Luangwedchakarn
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pinklow Umrod
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Wanna Thongnoppakhun
- Division of Molecular Genetics, Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Suporn Foongladda
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Yupin Suputtamongkol
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- * E-mail:
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Maruhashi T, Kaifu T, Yabe R, Seno A, Chung SH, Fujikado N, Iwakura Y. DCIR maintains bone homeostasis by regulating IFN-γ production in T cells. THE JOURNAL OF IMMUNOLOGY 2015; 194:5681-91. [PMID: 25926676 DOI: 10.4049/jimmunol.1500273] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 04/03/2015] [Indexed: 12/19/2022]
Abstract
Dendritic cell immunoreceptor (DCIR) is a C-type lectin receptor mainly expressed in DCs. Dcir (-/-) mice spontaneously develop autoimmune enthesitis and ankylosis accompanied by fibrocartilage proliferation and ectopic ossification. However, the mechanisms of new bone/cartilage formation in Dcir (-/-) mice remain to be elucidated. In this study, we show that DCIR maintains bone homeostasis by regulating IFN-γ production under pathophysiological conditions. DCIR deficiency increased bone volume in femurs and caused aberrant ossification in joints, whereas these symptoms were abolished in Rag2(-/-)Dcir(-/-) mice. IFN-γ-producing T cells accumulated in lymph nodes and joints of Dcir(-/-) mice, and purified Dcir(-/-) DCs enhanced IFN-γ(+) T cell differentiation. The ankylotic changes and bone volume increase were suppressed in the absence of IFN-γ. Thus, IFN-γ is a positive chondrogenic and osteoblastogenic factor, and DCIR is a crucial regulator of bone metabolism; consequently, both factors are potential targets for therapies directed against bone metabolic diseases.
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Affiliation(s)
- Takumi Maruhashi
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Department of Biophysics and Biochemistry, Graduate School of Science, The University of Tokyo, Tokyo 113-0032, Japan; Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan
| | - Tomonori Kaifu
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan; and
| | - Rikio Yabe
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan; Medical Mycology Research Center, Chiba University, Chiba 250-8673, Japan
| | - Akimasa Seno
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Medical Mycology Research Center, Chiba University, Chiba 250-8673, Japan
| | - Soo-Hyun Chung
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan
| | - Noriyuki Fujikado
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan; and
| | - Yoichiro Iwakura
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan; Department of Biophysics and Biochemistry, Graduate School of Science, The University of Tokyo, Tokyo 113-0032, Japan; Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan; and Medical Mycology Research Center, Chiba University, Chiba 250-8673, Japan
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45
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Affiliation(s)
- Hye Won Kim
- Division of Rheumatology, Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea
| | - Sang-Hoon Lee
- Department of Rheumatology, Center of Arthritis and Rheumatism, Kyung Hee University Hospital at Gangdong, Seoul, Korea
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Abstract
The endoplasmic reticulum aminopeptidase 1 (ERAP1) performs a major role in antigen processing, trimming N-terminally extended peptides to the final epitope for presentation by major histocompatibility complex class I molecules. Recent genome-wide association studies have identified single nucleotide polymorphisms (SNPs) within ERAP1 as being associated with disease, in particular ankylosing spondylitis (AS). AS is a polygenic chronic inflammatory disease with a strong genetic link to HLA-B27 known for over 40 years. The association of ERAP1 SNPs with AS susceptibility is only observed in HLA-B27-positive individuals, which intersect on the antigen processing pathway. Recent evidence examining the trimming activity of polymorphic ERAP1 highlights its role in generating peptides for loading onto and stabilizing HLA-B27, and the consequent alterations in the interaction of specific NK cell receptors, and the activation of the unfolded protein response as important in the mechanism of disease pathogenesis. Here, we discuss the recent genetic association findings linking ERAP1 SNPs with AS disease susceptibility and the effect of these variants on ERAP1 function, highlighting mechanisms by which AS may arise. The identification of these functional variants of ERAP1 may lead to better stratification of AS patients by providing a diagnostic tool and a potential therapeutic target.
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Affiliation(s)
- Emma Reeves
- Cancer Sciences Unit, Somers Cancer Research Building, Southampton General Hospital, Mailpoint 824, Tremona Road, Southampton, SO16 6YD, UK
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Rehaume LM, Mondot S, Aguirre de Cárcer D, Velasco J, Benham H, Hasnain SZ, Bowman J, Ruutu M, Hansbro PM, McGuckin MA, Morrison M, Thomas R. ZAP-70 genotype disrupts the relationship between microbiota and host, leading to spondyloarthritis and ileitis in SKG mice. Arthritis Rheumatol 2014; 66:2780-92. [PMID: 25048686 DOI: 10.1002/art.38773] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Accepted: 07/01/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The spondyloarthritides share genetic susceptibility, interleukin-23 (IL-23) dependence, and the involvement of microbiota. The aim of the current study was to elucidate how host genetics influence gut microbiota and the relationship between microbiota and organ inflammation in spondyloarthritides. METHODS BALB/c ZAP-70(W163C) -mutant (SKG) mice, Toll-like receptor 4 (TLR-4)-deficient SKG mice, and wild-type BALB/c mice were housed under specific pathogen-free conditions. SKG and wild-type BALB/c mice were maintained under germ-free conditions, and some of these mice were recolonized with altered Schaedler flora. All of the mice were injected intraperitoneally with microbial β-1,3-glucan (curdlan). Arthritis, spondylitis, and ileitis were assessed histologically. Microbiome composition was analyzed in serial fecal samples obtained from mice that were co-housed beginning at the time of weaning, using 454 pyrosequencing. Infiltrating cells and cytokines in the peritoneal cavity were measured by flow cytometry and enzyme-linked immunosorbent assay. Cytokine, endoplasmic reticulum (ER) stress marker, and tight junction protein transcription was measured by quantitative real-time polymerase chain reaction. RESULTS Microbiota content and response to curdlan varied according to whether T cell receptor signal strength was normal or was impaired due to the ZAP-70(W163C) mutation. Curdlan triggered acute inflammation regardless of the presence of the SKG allele or microbiota. However, no or limited microbiota content attenuated the severity of arthritis. In contrast, ileal IL-23 expression, ER stress, lymph node IL-17A production, goblet cell loss, and ileitis development were microbiota-dependent. Ileitis but not arthritis was suppressed by microbiota transfer upon co-housing SKG mice with wild-type BALB/c mice, as well as by TLR-4 deficiency. CONCLUSION The interaction between immunogenetic background and host microbiota leads to an IL-23-dependent loss of mucosal function, triggering ileitis in response to curdlan.
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Affiliation(s)
- Linda M Rehaume
- University of Queensland Diamantina Institute, Brisbane, Queensland, Australia
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Costello ME, Elewaut D, Kenna TJ, Brown MA. Microbes, the gut and ankylosing spondylitis. Arthritis Res Ther 2014; 15:214. [PMID: 23750937 PMCID: PMC4060176 DOI: 10.1186/ar4228] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
It is increasingly clear that the interaction between host and microbiome profoundly affects health. There are 10 times more bacteria in and on our bodies than the total of our own cells, and the human intestine contains approximately 100 trillion bacteria. Interrogation of microbial communities by using classic microbiology techniques offers a very restricted view of these communities, allowing us to see only what we can grow in isolation. However, recent advances in sequencing technologies have greatly facilitated systematic and comprehensive studies of the role of the microbiome in human health and disease. Comprehensive understanding of our microbiome will enhance understanding of disease pathogenesis, which in turn may lead to rationally targeted therapy for a number of conditions, including autoimmunity.
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Xu WD, Yang XY, Li DH, Zheng KD, Qiu PC, Zhang W, Li CY, Lei KF, Yan GQ, Jin SW, Wang JG. Up-regulation of fatty acid oxidation in the ligament as a contributing factor of ankylosing spondylitis: A comparative proteomic study. J Proteomics 2014; 113:57-72. [PMID: 25281561 DOI: 10.1016/j.jprot.2014.09.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 08/29/2014] [Accepted: 09/20/2014] [Indexed: 02/05/2023]
Abstract
OBJECTIVES The present study first utilized a standardized shotgun proteomic analysis method to determine differences in protein expression of fibroblasts in the ligament between AS patients and healthy controls. METHODS Proteins extracted from primarily cultured FLLs from 35 AS patients and 10 normal subjects were analyzed by automated 2D-Nano-LC-ESI-MS/MS. Differentially expressed proteins were screened by 2-sample t-test and fold change. Bioinformatics analysis of differentially expressed proteins was based on the IPA. Fatty acid β-oxidation-related proteins and INSR pathway-related proteins in the ligament were confirmed by real-time PCR and Western blot. RESULTS A total of 556 differential proteins were screened in AS. Of them, 322 proteins were up-regulated and the remaining 234 proteins were down-regulated. GO and pathway analyses showed that six fatty acid β-oxidation-related proteins (HADHB, ECHS1, ACSL4, ACADM, ACSL1 and HADH) were up-regulated in FLL cells, which was consistent with the results obtained from real-time PCR, Western blot and MS, while INSR pathway-related proteins (INSR, IRS1, PI3K and PKC) was low in the ligament of AS as compared with that in healthy controls. CONCLUSION The lower body fat level in AS maybe due to up-regulation of fatty acid β-oxidation-related enzymes regulated by INSR/PI3K/PKC pathway. BIOLOGICAL SIGNIFICANCE Ankylosing spondylitis (AS), a common spondyloarthropathy, is an inflammatory rheumatic disease with a predilection for the axial skeleton. Clinical hallmarks of AS include sacroiliitis, uveitis, enthesitis and persistent spinal inflammation. The pathogenic mechanism of disease causation and perpetuation remains poorly understood. In this study, we primarily cultured fibroblast cells from ligament biopsies, knowing that fibroblast cells are dominant cells in the diseased ligament. One of the characteristic pathologic changes in AS is inflammation of the attachment points, including the muscle, ligament and bone or joint capsule. Inflammation of the tendon attachment point is usually non-bacterial and can lead to pain and swelling of the tendon ligament. To obtain more information, we used Shotgun proteomic analysis based on multidimensional liquid chromatography tandem mass spectrometry (LC-MS/MS). we firstly mixed the lysates of FLL cells derived from the ligaments of 35 AS patients and 10 normal subjects, identified proteins by automated 2D-Nano-LC-ESI-MS/MS method, GO and pathway analyses showed that six fatty acid β-oxidation-related proteins (HADHB, ECHS1, ACSL4, ACADM, ACSL1 and HADH) were up-regulated in the ligament, which was consistent with the results obtained from real-time PCR, Western blot and MS, while INSR pathway-related proteins (INSR, IRS1, PI3K and PKC) was low in the ligament of AS as compared with that in healthy controls. We also find that AS subjects had significantly lower body mass index (BMI) and BMI Z-scores compared with that in healthy controls. The results remind us that up-regulation of fatty acid β-oxidation-related proteins lower the body fat content, which is a new discovery contributing to the progression of AS. This is the first report on fatty acid oxidation in AS. It was found that the body fat level was low in AS due to high fatty acid oxidation, suggesting that insulin signaling may play an important role in the metabolic switch from predominant to fatty acid metabolism that characterizes the ligament of AS. One mechanism for this transition is increased expression of genes that regulate the rate of fatty acid oxidation. This effect may be mediated by PI3K, a downstream mediator of many receptor tyrosine kinases, including the INSR. This is a newly discovered factor contributing to the progression of AS.
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Affiliation(s)
- Wei-Dong Xu
- Department of Orthopedics, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, China
| | - Xin-Yu Yang
- Department of Medicinal Chemistry, College of Pharmacy Sciences, Wenzhou Medical University, Wenzhou, China
| | - Da-He Li
- Department of Orthopedics, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, China
| | - Kai-Di Zheng
- Department of Biochemistry, College of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Peng-Cheng Qiu
- Department of Biochemistry, College of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Wei Zhang
- Department of Biochemistry, College of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Chun-Yang Li
- Department of Biochemistry, College of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Kang-Fu Lei
- Department of Biochemistry, College of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Guo-Quan Yan
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, Shanghai, China
| | - Sheng-Wei Jin
- Department of Anesthesia and Critical Care, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
| | - Jian-Guang Wang
- Department of Biochemistry, College of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China.
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Ye Z, Mayer J, Ivacic L, Zhou Z, He M, Schrodi SJ, Page D, Brilliant MH, Hebbring SJ. Phenome-wide association studies (PheWASs) for functional variants. Eur J Hum Genet 2014; 23:523-9. [PMID: 25074467 DOI: 10.1038/ejhg.2014.123] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 05/27/2014] [Accepted: 05/30/2014] [Indexed: 01/08/2023] Open
Abstract
The genome-wide association study (GWAS) is a powerful approach for studying the genetic complexities of human disease. Unfortunately, GWASs often fail to identify clinically significant associations and describing function can be a challenge. GWAS is a phenotype-to-genotype approach. It is now possible to conduct a converse genotype-to-phenotype approach using extensive electronic medical records to define a phenome. This approach associates a single genetic variant with many phenotypes across the phenome and is called a phenome-wide association study (PheWAS). The majority of PheWASs conducted have focused on variants identified previously by GWASs. This approach has been efficient for rediscovering gene-disease associations while also identifying pleiotropic effects for some single-nucleotide polymorphisms (SNPs). However, the use of SNPs identified by GWAS in a PheWAS is limited by the inherent properties of the GWAS SNPs, including weak effect sizes and difficulty when translating discoveries to function. To address these challenges, we conducted a PheWAS on 105 presumed functional stop-gain and stop-loss variants genotyped on 4235 Marshfield Clinic patients. Associations were validated on an additional 10 640 Marshfield Clinic patients. PheWAS results indicate that a nonsense variant in ARMS2 (rs2736911) is associated with age-related macular degeneration (AMD). These results demonstrate that focusing on functional variants may be an effective approach when conducting a PheWAS.
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Affiliation(s)
- Zhan Ye
- Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - John Mayer
- Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - Lynn Ivacic
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - Zhiyi Zhou
- Parkland Center for Clinical Innovation, Parkland Health and Hospital System, Dallas, TX, USA
| | - Min He
- 1] Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield, WI, USA [2] Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - Steven J Schrodi
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - David Page
- Computation and Informatics in Biology and Medicine, University of Wisconsin Madison, Madison, WI, USA
| | - Murray H Brilliant
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA
| | - Scott J Hebbring
- 1] Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI, USA [2] Computation and Informatics in Biology and Medicine, University of Wisconsin Madison, Madison, WI, USA
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