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Leccese P, Padula MC, Santospirito EV, Colucci R, Lascaro N, Padula AA, D’Angelo S. The relationship between HLA-B*51 subtypes, clinical manifestations and severity of Behçet's syndrome: a large Italian cohort study. Rheumatol Adv Pract 2023; 7:rkad087. [PMID: 37937176 PMCID: PMC10627283 DOI: 10.1093/rap/rkad087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/02/2023] [Indexed: 11/09/2023] Open
Abstract
Objectives Behçet's syndrome (BS) is a chronic multisystemic inflammatory disorder of unclear aetiology. The predominant BS susceptibility locus was identified within HLA-B*51. HLA-B*51 subtypes were previously studied as disease susceptibility markers. Few data are now available about the relationship between B*51 subtypes and clinical phenotype. The aim of this study was to genotype HLA-B*51 subtypes in a series of Italian BS patients and to test the association with clinical manifestations and disease severity (Krause's index). Methods HLA-B*51 subtype genotyping for 63 alleles (B*51:01-B*51:63) was performed by PCR after DNA extraction from whole blood of BS patients. The correlation of disease clinical manifestations and severity (Krause's index) with the HLA-B*51 allele and its subtypes was analysed. Results We enrolled 241 (140 male and 101 female) BS patients, and HLA-B*51 frequency was 62.7% (151 of 241). One hundred and eight of the HLA-B*51-positive patients carried the B*51:01 subtype (108 of 151, 71.5%), 39 of 151 (25.8%) the B*51:08 subtype, 2 of 151 (1.3%) the B*51:02 subtype, 1 of 151 (0.7%) the B*51:05 subtype, and 1 of 151 (0.7%) the B*51:07 subtype. We found that ocular involvement was statistically associated with HLA-B*51 positivity and with B*51:01 and B*51:08 subtypes (P < 0.05). We also found that disease severity was higher in HLA-B*51-positive patients than in negative patients, but without statistical significance (median Krause's index 5.1 vs 4.1, P > 0.05). Conclusion Here, we confirm a high frequency of the HLA-B*51 allele in our group of BS patients. B*51:01 and B*51:08 were found to be the most common subtypes, and an association of both subtypes with ocular involvement was also underlined.
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Affiliation(s)
- Pietro Leccese
- Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza, Potenza, Italy
| | - Maria Carmela Padula
- Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza, Potenza, Italy
| | | | - Rosa Colucci
- Tissue Typing Laboratory C.R.T. Basilicata, Madonna delle Grazie Hospital, Matera, Italy
| | - Nancy Lascaro
- Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza, Potenza, Italy
| | - Angela Anna Padula
- Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza, Potenza, Italy
| | - Salvatore D’Angelo
- Rheumatology Institute of Lucania (IReL) and Rheumatology Department of Lucania, San Carlo Hospital of Potenza, Potenza, Italy
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2
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Lin S, Xu Z, Lin Z, Xie B, Feng J. Advances in pathogenesis and treatment of ocular involvement in Behcet's disease. Front Immunol 2023; 14:1206959. [PMID: 37841268 PMCID: PMC10570607 DOI: 10.3389/fimmu.2023.1206959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 09/08/2023] [Indexed: 10/17/2023] Open
Abstract
Behcet's disease (BD) is a chronic multi-systemic disease characterized by relapsing-remitting oral ulcers, genital ulcers, ocular inflammatory involvements, and numerous other systemic features. Ocular involvements are quite common in BD and may cause severe tissue damage and potentially blindness. Even though the pathogenesis of BD remains ambiguous, growing evidences have shown that genetic factors, environmental triggers and immunological abnormalities play significant roles in its development and progression. Novel biotherapies targeting IFN-γ, TNF-α and interleukins have been used in recent years. In this review, we mainly pay attention to the ocular involvement of BD, and discuss the current understanding of mechanisms and advances in therapeutic approaches, especially novel biologics. Finally, we discuss the management in patients with pregnancy.
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Affiliation(s)
- Suibin Lin
- Department of Gynaecology and Obstetrics, Zhangpu Hospital, Zhangzhou, China
| | - Zhirong Xu
- Department of Internal Medicine, Zhangpu Hospital, Zhangzhou, China
| | - Zhiming Lin
- Department of Rheumatology and Immunology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Baozhao Xie
- Department of Rheumatology and Immunology, the Seventh Affiliated Hospital of Guangxi Medical University (Wuzhou Gongren Hospital), Wuzhou, China
| | - Junmei Feng
- Department of Rheumatology and Immunology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Rheumatology and Immunology, Nanfang Hospital of Southern Medical University, Guangzhou, China
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3
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Abedini F, Rahmanian N, Heidari Z, Feizi A, Sherkat R, Rezaei M. Diversity of HLA class I and class II alleles in Iran populations: Systematic review and Meta-Analaysis. Transpl Immunol 2021; 69:101472. [PMID: 34555503 DOI: 10.1016/j.trim.2021.101472] [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: 08/21/2021] [Revised: 09/16/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
The human leukocyte antigen (HLA) system plays an essential role in the peptides antigen presentation and more regulation of immune responses. Regarding all HLA molecules' associations with various diseases and their clinical utilities in understanding drug reactions or prediction of transplantation outcome, there is a need for much more extensive HLA data generated from Asian countries. METHOD A comprehensive search was conducted in electronic databases between 1990 and 2021 to identify relevant articles to HLA frequency in the normal Iranian population. Two independent reviewers screened and selected the eligible studies. After data extraction, the meta-analysis was performed using STATA version 14. The overall frequencies and their 95% confidence intervals (CIs) were obtained using the random-effects model. RESULTS Among 1141 studies 78 were eligible for this study and the sample sizes varied from 14 to 15,600. The most frequent alleles of HLA class I were HLA-A*02 (22%; 95%CI: 20-24%; I2 = 88.63%), -B*35 (18%; 95%CI: 16-21%; I2 = 90.95%), -C*12 (18%; 95%CI: 13-22%; I2 = 89.51%). HLA-DQA1*01 (42%; 95%CI: 40-44%; I2 = 56.80%), -DQB1*03 (38%; 95%CI: 35-42%; I2 = 92.38%), and -DRB1*11 (24%; 95%CI: 22-26%; I2 = 90.72%) were the most frequent alleles of HLA class II in Iran. DISCUSSION Our meta-analysis results point out that the comprehensive report of HLA allele frequency in the Iranian population could be helpful as reference data for planning and managing transplantation and immune disease treatment in Iran.
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Affiliation(s)
- Fateme Abedini
- Cancer Prevention Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Narges Rahmanian
- Cancer Prevention Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Applied Physiology Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Heidari
- Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical sciences, Isfahan, Iran
| | - Awat Feizi
- Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical sciences, Isfahan, Iran
| | - Roya Sherkat
- Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marzieh Rezaei
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
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4
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Takeuchi M, Mizuki N, Ohno S. Pathogenesis of Non-Infectious Uveitis Elucidated by Recent Genetic Findings. Front Immunol 2021; 12:640473. [PMID: 33912164 PMCID: PMC8072111 DOI: 10.3389/fimmu.2021.640473] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/22/2021] [Indexed: 01/01/2023] Open
Abstract
Uveitis is a generic term for inflammation of the uvea, which includes the iris, ciliary body, and choroid. Prevalence of underlying non-infectious uveitis varies by race and region and is a major cause of legal blindness in developed countries. Although the etiology remains unclear, the involvement of both genetic and environmental factors is considered important for the onset of many forms of non-infectious uveitis. Major histocompatibility complex (MHC) genes, which play a major role in human immune response, have been reported to be strongly associated as genetic risk factors in several forms of non-infectious uveitis. Behçet’s disease, acute anterior uveitis (AAU), and chorioretinopathy are strongly correlated with MHC class I-specific alleles. Moreover, sarcoidosis and Vogt-Koyanagi-Harada (VKH) disease are associated with MHC class II-specific alleles. These correlations can help immunogenetically classify the immune pathway involved in each form of non-infectious uveitis. Genetic studies, including recent genome-wide association studies, have identified several susceptibility genes apart from those in the MHC region. These genetic findings help define the common or specific pathogenesis of ocular inflammatory diseases by comparing the susceptibility genes of each form of non-infectious uveitis. Interestingly, genome-wide association of the interleukin (IL)23R region has been identified in many of the major forms of non-infectious uveitis, such as Behçet’s disease, ocular sarcoidosis, VKH disease, and AAU. The interleukin-23 (IL-23) receptor, encoded by IL23R, is expressed on the cell surface of Th17 cells. IL-23 is involved in the homeostasis of Th17 cells and the production of IL-17, which is an inflammatory cytokine, indicating that a Th17 immune response is a common key in the pathogenesis of non-infectious uveitis. Based on the findings from the immunogenetics of non-infectious uveitis, a personalized treatment approach based on the patient’s genetic make-up is expected.
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Affiliation(s)
- Masaki Takeuchi
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Nobuhisa Mizuki
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Shigeaki Ohno
- Department of Ophthalmology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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5
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Poddighe D, Turganbekova A, Mukusheva Z, Abdirakhmanova A, Assylbekova M, Abdrakhmanova S. HLA-B*51 allelic and carrier frequency in Kazakhstan: insights into Behçet's disease prevalence in Central Asia. Intern Emerg Med 2021; 16:325-331. [PMID: 32472479 DOI: 10.1007/s11739-020-02369-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 05/06/2020] [Indexed: 12/18/2022]
Abstract
Behçet's disease (BD) is a systemic vasculitis whose prevalence varies according to the ethnicity. HLA-B*51 is a well-known genetic factor predisposing to BD: populations with higher HLA-B*51 allelic frequencies are also those with a greater disease prevalence, as occurs in the Silk Road countries. However, the BD prevalence is unknown in many countries, including Kazakhstan and, in general, Central Asia, despite the location on or near the Silk Road. Due to the lack of clinical studies from this area, we analyzed the bone marrow donors registry in Kazakhstan, in order to assess the HLA-B*51 allelic and carrier frequencies, which resulted to be 8.14 and 15.28%, respectively. Through a comparison with the same parameters in other countries (by performing a data search in the medical literature and in the Allele Frequency Net Database), we might speculate a BD prevalence in Kazakhstan of 10-15/100.000 at least. This result should prompt a greater clinical consideration of this disease in Central Asia, as well as the publication of clinical data from this geographic area.
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Affiliation(s)
- Dimitri Poddighe
- Department of Medicine, Nazarbayev University School of Medicine, Kerei-Zhanibek Str. 5/1, 010000, Nur-Sultan, Kazakhstan.
| | - Aida Turganbekova
- RSE on REM Scientific-Production Center of Transfusion Medicine, Ministry of Health of the Republic of Kazakhstan, Nur-Sultan, Kazakhstan
| | - Zaure Mukusheva
- Department of Pediatric Rheumatology, National Research Center for Mother and Child Health, University Medical Center, Nur-Sultan, Kazakhstan
| | - Altynay Abdirakhmanova
- Department of Medicine, Nazarbayev University School of Medicine, Kerei-Zhanibek Str. 5/1, 010000, Nur-Sultan, Kazakhstan
| | - Maikesh Assylbekova
- Department of Pediatric Rheumatology, National Research Center for Mother and Child Health, University Medical Center, Nur-Sultan, Kazakhstan
| | - Saniya Abdrakhmanova
- RSE on REM Scientific-Production Center of Transfusion Medicine, Ministry of Health of the Republic of Kazakhstan, Nur-Sultan, Kazakhstan
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6
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Mahmoudi M, Aslani S, Meguro A, Akhtari M, Fatahi Y, Mizuki N, Shahram F. A comprehensive overview on the genetics of Behçet's disease. Int Rev Immunol 2020; 41:84-106. [PMID: 33258398 DOI: 10.1080/08830185.2020.1851372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Behçet's disease (BD) is a systemic and inflammatory disease, characterized mainly by recurrent oral and genital ulcers, eye involvement, and skin lesions. Although the exact etiopathogenesis of BD remains unrevealed, a bulk of studies have implicated the genetic contributing factors as critical players in disease predisposition. In countries along the Silk Road, human leukocyte antigen (HLA)-B51 has been reported as the strongest genetically associated factor for BD. Genome-wide association studies, local genetic polymorphism studies, and meta-analysis of combined data from Turkish, Iranian, and Japanese populations have also identified new genetic associations with BD. Among these, other HLA alleles such as HLA-B*15, HLA-B*27, HLA-B*57, and HLA-A*26 have been found as independent risk factors for BD, whereas HLA-B*49 and HLA-A*03 are independent protective alleles for BD. Moreover, other genes have also reached the genome-wide significance level of association with BD susceptibility, including IL10, IL23R-IL12RB2, IL12A, CCR1-CCR3, STAT4, TNFAIP3, ERAP1, KLRC4, and FUT2. Also, several rare nonsynonymous variants in TLR4, IL23R, NOD2, and MEFV genes have been reported to be involved in BD pathogenesis. According to genetic determinants in the loci outside the MHC region that are contributed to the host defense, immunity, and inflammation pathways, it is suggested that immune responses to the pathogen as an important environmental factor and mucosal immunity contribute to BD susceptibility.
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Affiliation(s)
- Mahdi Mahmoudi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Inflammation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Aslani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Akira Meguro
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Maryam Akhtari
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Inflammation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Yousef Fatahi
- Faculty of Pharmacy, Department of Pharmaceutical Nanotechnology, Tehran University of Medical Sciences, Tehran, Iran.,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Nobuhisa Mizuki
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Farhad Shahram
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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7
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Pradana KA, Widjaya MA, Wahjudi M. Indonesians Human Leukocyte Antigen (HLA) Distributions and Correlations with Global Diseases. Immunol Invest 2019; 49:333-363. [PMID: 31648579 DOI: 10.1080/08820139.2019.1673771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In Human, Major Histocompatibility Complex known as Human Leukocyte Antigen (HLA). The HLA grouped into three subclasses regions: the class I region, the class II region, and the class III region. There are thousands of polymorphic HLAs, many of them are proven to have correlations with diseases. Indonesia consists of diverse ethnicity people and populations. It carries a unique genetic diversity between one and another geographical positions. This paper aims to extract Indonesians HLA allele data, mapping the data, and correlating them with global diseases. From the study, it is found that global diseases, like Crohn's disease, rheumatoid arthritis, Graves' disease, gelatin allergy, T1D, HIV, systemic lupus erythematosus, juvenile chronic arthritis, and Mycobacterial disease (tuberculosis and leprosy) suspected associated with the Indonesian HLA profiles.
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Affiliation(s)
- Krisnawan Andy Pradana
- Faculty of Biotechnology, University of Surabaya, Surabaya City, Indonesia.,Department of Anatomy and Histology Faculty of Medicine, Airlangga University, Tambaksari, Surabaya City, Indonesia
| | | | - Mariana Wahjudi
- Faculty of Biotechnology, University of Surabaya, Surabaya City, Indonesia
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8
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The association analysis between HLA-A*26 and Behçet's disease. Sci Rep 2019; 9:4426. [PMID: 30872678 PMCID: PMC6418292 DOI: 10.1038/s41598-019-40824-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 02/25/2019] [Indexed: 01/06/2023] Open
Abstract
The strongest genetic risk factor of Behçet’s disease (BD) is HLA-B*51. Our group previously reported that HLA-A*26 is independently associated with the risk of the onset of BD apart from HLA-B*51. Here, we re-evaluated the association between HLA-A*26 and BD in the Japanese population. We also performed a comprehensive literature search and meta-analyzed the extracted published data concerning the relationship between HLA-A*26 and BD to estimate the odds ratio (OR) of HLA-A*26 to BD. In this study, we genotyped 611 Japanese BD patients and 2,955 unrelated ethnically matched healthy controls. Genotyping results showed that the phenotype frequency of HLA-A*26 was higher in BD patients than in controls (OR = 2.12, 95% CI: 1.75–2.56). Furthermore, within the HLA-B*51-negative populations, the phenotype frequency of HLA-A*26 was significantly higher in BD patients than in controls (OR = 3.10, 95% CI: 2.43–3.95). Results obtained from meta-analysis combined with our data showed that the modified OR of HLA-A*26 became 1.80 (95% CI:1.58–2.06), whereas within the HLA-B*51-negative population, the modified OR became 4.02 (95% CI: 2.29–7.05). A subgroup analysis arranged by the geographical regions showed HLA-A*26 is in fact associated with the onset of BD in Northeast Asia (OR = 2.11, 95% CI: 1.75–2.56), but not in the Middle East or in Europe.
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9
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Deng Y, Zhu W, Zhou X. Immune Regulatory Genes Are Major Genetic Factors to Behcet Disease: Systematic Review. Open Rheumatol J 2018; 12:70-85. [PMID: 30069262 PMCID: PMC6040213 DOI: 10.2174/1874312901812010070] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/04/2018] [Accepted: 06/04/2018] [Indexed: 12/15/2022] Open
Abstract
Behcet's disease (BD) is a chronic refractory multi-system autoimmune disorder that occurs in a genetically susceptible host. Multiple genetic factors have been identified that may contribute to the pathogenesis of BD. The major genes with polymorphisms associated with BD include HLA-B and -A, CIITA, ERAP1, MICA, IL10, IL12A, IL12RB2, IL23R, MEFV, IRF8, TNFAIP3, REL, TLR4, NOD1,2, CCR1,CCR3, GIMAP1,2,4, KLRC4, STAT4, NCOA5, FOXP3, PSORS1C1, FUT2, UBAC2, SUMO4, ADO-EGR2, CEBPB-PTPN1, and JPKL-CNTN5. These genes encode proteins involved mainly in immune regulation and inflammation, and some in transcription and post-translational modification. A complete view of these BD-associated genes may provide a clue to this complex disease in terms of its pathogenesis and exploring potentially targeted therapies for BD.
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Affiliation(s)
- Yan Deng
- The Second Affiliated Hospital of Nanchang University, Nanchangine>, China.,Department of Internal Medicine/Rheumatology, University of Texas Health Science Center at Houston McGovern Medical School, USA
| | - Weifeng Zhu
- Department of Internal Medicine/Rheumatology, University of Texas Health Science Center at Houston McGovern Medical School, USA.,College of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Xiaodong Zhou
- Department of Internal Medicine/Rheumatology, University of Texas Health Science Center at Houston McGovern Medical School, USA
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10
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Guasp P, Barnea E, González-Escribano MF, Jiménez-Reinoso A, Regueiro JR, Admon A, López de Castro JA. The Behçet's disease-associated variant of the aminopeptidase ERAP1 shapes a low-affinity HLA-B*51 peptidome by differential subpeptidome processing. J Biol Chem 2017; 292:9680-9689. [PMID: 28446606 DOI: 10.1074/jbc.m117.789180] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/21/2017] [Indexed: 01/05/2023] Open
Abstract
A low-activity variant of endoplasmic reticulum aminopeptidase 1 (ERAP1), Hap10, is associated with the autoinflammatory disorder Behçet's disease (BD) in epistasis with HLA-B*51, which is the main risk factor for this disorder. The role of Hap10 in BD pathogenesis is unknown. We sought to define the effects of Hap10 on the HLA-B*51 peptidome and to distinguish these effects from those due to HLA-B*51 polymorphisms unrelated to disease. The peptidome of the BD-associated HLA-B*51:08 subtype expressed in a Hap10-positive cell line was isolated, characterized by mass spectrometry, and compared with the HLA-B*51:01 peptidome from cells expressing more active ERAP1 allotypes. We additionally performed synthetic peptide digestions with recombinant ERAP1 variants and estimated peptide-binding affinity with standard algorithms. In the BD-associated ERAP1 context of B*51:08, longer peptides were generated; of the two major HLA-B*51 subpeptidomes with Pro-2 and Ala-2, the former one was significantly reduced, and the latter was increased and showed more ERAP1-susceptible N-terminal residues. These effects were readily explained by the low activity of Hap10 and the differential susceptibility of X-Pro and X-Ala bonds to ERAP1 trimming and together resulted in a significantly altered peptidome with lower affinity. The differences due to ERAP1 were clearly distinguished from those due to HLA-B*51 subtype polymorphism, which affected residue frequencies at internal positions of the peptide ligands. The alterations in the nature and affinity of HLA-B*51·peptide complexes probably affect T-cell and natural killer cell recognition, providing a sound basis for the joint association of ERAP1 and HLA-B*51 with BD.
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Affiliation(s)
- Pablo Guasp
- From the Centro de Biología Molecular Severo Ochoa (Consejo Superior de Investigaciones Científicas and Universidad Autónoma), 28049 Madrid, Spain
| | - Eilon Barnea
- the Faculty of Biology, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | | | - Anaïs Jiménez-Reinoso
- the Department of Immunology, Hospital 12 de Octubre Health Research Institute (imas12), Complutense University School of Medicine, 28040 Madrid, Spain
| | - José R Regueiro
- the Department of Immunology, Hospital 12 de Octubre Health Research Institute (imas12), Complutense University School of Medicine, 28040 Madrid, Spain
| | - Arie Admon
- the Faculty of Biology, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - José A López de Castro
- From the Centro de Biología Molecular Severo Ochoa (Consejo Superior de Investigaciones Científicas and Universidad Autónoma), 28049 Madrid, Spain,
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11
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Ashouri E, Norman PJ, Guethlein LA, Han AS, Nemat-Gorgani N, Norberg SJ, Ghaderi A, Parham P. HLA class I variation in Iranian Lur and Kurd populations: high haplotype and allotype diversity with an abundance of KIR ligands. HLA 2016; 88:87-99. [PMID: 27558013 DOI: 10.1111/tan.12852] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/10/2016] [Accepted: 07/21/2016] [Indexed: 11/30/2022]
Abstract
HLA-A, -B and -C alleles of 285 individuals, representing three Iranian Lur populations and one Iranian Kurd population were sequenced completely, yielding human leukocyte antigen (HLA) class I genotypes at high resolution and filling four fields of the official HLA nomenclature. Each population has 87-99 alleles, evenly distributed between the three HLA class I genes, 145 alleles being identified in total. These alleles were already known, named and deposited in the HLA database. The alleles form 316 different HLA A-B-C haplotypes, with each population having between 80 and 112 haplotypes. The four Iranian populations form a related group that is distinguished from other populations, including other Iranians. All four KIR ligands - the A3/11, Bw4, C1 and C2 epitopes - are well represented, particularly Bw4, which is carried by three high-frequency allotypes: HLA-A*24:02, HLA-A*32:01 and HLA-B*51:01. In the Lur and Kurd populations, between 82% and 94% of individuals have the Bw4 epitope, the ligand for KIR3DL1. HLA-B*51:01 is likely of Neandertal origin and associated with Behcet's disease, also known as the Silk Road disease. The Lordegan Lur have the highest frequency of HLA-B*51:01 in the world. This allele is present on 46 Lur and Kurd haplotypes. Present at lower frequency is HLA-B*51:08, which is also associated with Behcet's disease. In the four Iranian populations, 31 haplotypes encode both Bw4(+) HLA-A and Bw4(+) HLA-B, a dual combination of Bw4 epitopes that is relatively rare in other populations, worldwide. This study both demonstrates and emphasizes the value of studying HLA class I polymorphism at highest resolution in anthropologically well-defined populations.
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Affiliation(s)
- E Ashouri
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA.,Endocrinology and Metabolism Research Center, Namazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - P J Norman
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - L A Guethlein
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - A S Han
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - N Nemat-Gorgani
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | | | - A Ghaderi
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - P Parham
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
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Al-Okaily F, Al-Rashidi S, Al-Balawi M, Mustafa M, Arfin M, Al-Asmari A. Genetic Association of HLA-A*26, -A*31, and -B*51 with Behcet's Disease in Saudi Patients. CLINICAL MEDICINE INSIGHTS-ARTHRITIS AND MUSCULOSKELETAL DISORDERS 2016; 9:167-73. [PMID: 27547040 PMCID: PMC4978194 DOI: 10.4137/cmamd.s39879] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 06/15/2016] [Accepted: 06/16/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND HLA-B*51 has been universally associated with Behcet’s disease (BD) susceptibility, while different alleles of HLA-A have also been identified as independent BD susceptibility loci in various ethnic populations. The objective of this study was to investigate associations of HLA-A and -B alleles with BD in Saudi patients. MATERIALS AND METHODS Genotyping for HLA-A and HLA-B was performed using HLA genotyping kit (Lab type(R) SSO) in 120 Saudi subjects, including 60 BD patients and 60 matched healthy controls. RESULTS Our results revealed that frequencies of HLA-A*26, -A*31, and -B*51 were significantly higher in BD patients than in controls, suggesting that HLA-A*26, -A*31, and -B*51 are associated with BD. The frequency of HLA-B*15 was significantly lower in BD patients than in controls. Stratification of genotyping results into active and nonactive forms of BD revealed that the frequency of HLA-A*31 was significantly higher in the nonactive form than in the active form of BD, while there was no significant difference in the distribution of other alleles between the two forms of BD. CONCLUSION This study suggests that HLA-A*26, -A*31, and -B*51 are associated with susceptibility risk to BD, while HLA-B*15 may be protective in Saudi patients. However, larger scale studies are needed to confirm these findings.
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Affiliation(s)
- Fahda Al-Okaily
- Department of Rheumatology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Seham Al-Rashidi
- Department of Rheumatology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Maysoon Al-Balawi
- Department of Rheumatology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Md Mustafa
- Research Centre, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Misbahul Arfin
- Research Centre, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
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Takeuchi M, Kastner DL, Remmers EF. The immunogenetics of Behçet's disease: A comprehensive review. J Autoimmun 2015; 64:137-48. [PMID: 26347074 DOI: 10.1016/j.jaut.2015.08.013] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 08/20/2015] [Indexed: 02/08/2023]
Abstract
Behçet's disease is a chronic multisystem inflammatory disorder characterized mainly by recurrent oral ulcers, ocular involvement, genital ulcers, and skin lesions, presenting with remissions and exacerbations. It is thought that both environmental and genetic factors contribute to its onset and development. Although the etiology of Behçet's disease remains unclear, recent immunogenetic findings are providing clues to its pathogenesis. In addition to the positive association of HLA-B*51, which was identified more than four decades ago, and which has since been confirmed in multiple populations, recent studies report additional independent associations in the major histocompatibility complex class I region. HLA-B*15, -B*27, -B*57, and -A*26 are independent risk factors for Behçet's disease, while HLA-B*49 and -A*03 are independent class I alleles that are protective for Behçet's disease. Genome-wide association studies have identified associations with genome-wide significance (P < 5 × 10(-8)) in the IL23R-IL12RB2, IL10, STAT4, CCR1-CCR3, KLRC4, ERAP1, TNFAIP3, and FUT2 loci. In addition, targeted next-generation sequencing has revealed the involvement of rare nonsynonymous variants of IL23R, TLR4, NOD2, and MEFV in Behçet's disease pathogenesis. Significant differences in gene function or mRNA expression associated with the risk alleles of the disease susceptibility loci suggest which genes in a disease-associated locus influence disease pathogenesis. These genes encompass both innate and adaptive immunity and confirm the importance of the predominant polarization towards helper T cell (Th) 1 versus Th2 cells, and the involvement of Th17 cells. In addition, epistasis observed between HLA-B*51 and the risk coding haplotype of the endoplasmic reticulum-associated protease, ERAP1, provides a clue that an HLA class I-peptide presentation-based mechanism contributes to this complex disease.
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Affiliation(s)
- Masaki Takeuchi
- Inflammatory Disease Section, Metabolic, Cardiovascular, and Inflammatory Disease Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004, Japan
| | - Daniel L Kastner
- Inflammatory Disease Section, Metabolic, Cardiovascular, and Inflammatory Disease Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Elaine F Remmers
- Inflammatory Disease Section, Metabolic, Cardiovascular, and Inflammatory Disease Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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Xavier JM, Davatchi F, Abade O, Shahram F, Francisco V, Abdollahi BS, Trindade H, Nadji A, Shafiee NM, Ghaderibarmi F, Ligeiro D, Oliveira SA. Characterization of the major histocompatibility complex locus association with Behçet's disease in Iran. Arthritis Res Ther 2015; 17:81. [PMID: 25889189 PMCID: PMC4415285 DOI: 10.1186/s13075-015-0585-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 02/24/2015] [Indexed: 01/21/2023] Open
Abstract
Introduction The aim of this study was to characterize the association of human leukocyte antigen (HLA) B alleles and major histocompatibility complex (MHC) single nucleotide polymorphisms (SNPs) with Behçet’s disease (BD) in an Iranian dataset. Methods The association of three SNPs in the MHC region previously identified as the most associated in high-density genotyping studies was tested in a case–control study on 973 BD patients and 825 controls from Iran, and the association of HLA-B alleles was tested in a subset of 681 patients and 414 controls. Results We found that HLA-B*51 (P = 4.11 × 10−41, OR [95% CI] = 4.63[3.66-5.85]) and B*15 confer risk for BD (P = 2.83 × 10−2, OR [95% CI] = 1.75[1.08-2.84]) in Iranian, and in B*51 negative individuals, only the B*15 allele is significantly associated with BD (P = 2.51 × 10−3, OR [95% CI] = 2.40[1.37-4.20]). rs76546355, formerly known as rs116799036, located between HLA-B and MICA (MHC class I polypeptide-related sequence A), demonstrated the same level of association with BD as HLA-B*51 (Padj = 1.78 × 10−46, OR [95% CI] = 5.46[4.21-7.09], and Padj = 8.34 × 10−48, OR [95% CI] = 5.44[4.20-7.05], respectively) in the HLA-B allelotyped subset, while rs2848713 was less associated (Padj = 7.14 × 10−35, OR [95% CI] = 3.73[2.97-4.69]) and rs9260997 was not associated (Padj = 1.00 × 10−1). Additionally, we found that B*51 genotype-phenotype correlations do not survive Bonferroni correction, while carriers of the rs76546355 risk allele predominate in BD cases with genital ulcers, positive pathergy test and positive BD family history (2.31 × 10−4 ≤ P ≤ 1.59 × 10−3). Conclusions We found that the HLA-B*51 allele and the rs76546355/rs116799036 MHC SNP are independent genetic risk factors for BD in Iranian, and that positivity for the rs76546355/rs116799036 risk allele, but not for B*51, does correlate with specific demographic characteristics or clinical manifestations in BD patients. Electronic supplementary material The online version of this article (doi:10.1186/s13075-015-0585-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Joana M Xavier
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Edifício Egas Moniz, 1649-028, Lisboa, Portugal. .,Instituto Gulbenkian de Ciência, Oeiras, Portugal.
| | - Fereydoun Davatchi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Olga Abade
- Lisbon Center for Blood and Transplantation, Instituto Português de Sangue e Transplantação, Lisboa, IP, Portugal.
| | - Farhad Shahram
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Vânia Francisco
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Edifício Egas Moniz, 1649-028, Lisboa, Portugal. .,Instituto Gulbenkian de Ciência, Oeiras, Portugal.
| | | | - Hélder Trindade
- Lisbon Center for Blood and Transplantation, Instituto Português de Sangue e Transplantação, Lisboa, IP, Portugal.
| | - Abdolhadi Nadji
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | | | - Fahmida Ghaderibarmi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Dário Ligeiro
- Lisbon Center for Blood and Transplantation, Instituto Português de Sangue e Transplantação, Lisboa, IP, Portugal.
| | - Sofia A Oliveira
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Edifício Egas Moniz, 1649-028, Lisboa, Portugal. .,Instituto Gulbenkian de Ciência, Oeiras, Portugal.
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Shadmanfar S, Shahram F, Nadji A, Akhlaghi M, Faezi ST, Sadeghi-Abdollahi B, Faridar A, Madanchi N, Davatchi F. The relationship between plasma homocysteine level and HLA-B51 in patients with Behcet's disease: a case-control study. Int J Rheum Dis 2014; 17:466-70. [PMID: 24428874 DOI: 10.1111/1756-185x.12271] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Various coagulation disorders have been reported to explain hypercoagulability state in Behcet's disease (BD). A possible negative association between human leukocyte antigen (HLA)-B51 and increased homocysteine level has been suggested in a previous report from Iranian patients with BD. The aim of this study was to find any possible relationship between plasma homocysteine levels and HLA-B51. METHODS In a case-control study, BD patients (fulfilling the new International Criteria for BD) and controls (who had similar clinical symptoms but BD was clinically excluded in them) were included. Mean plasma homocysteine levels measured by enzyme-linked immunosorbent assay in HLA-B51 positive and negative individuals both in patients and controls were compared by t-test, Mann-Whitney test and analysis of variance (F-test). RESULTS Ninety-six BD patients and 152 controls were recruited. There was no significant difference between HLA-B51 positive and negative individuals either in the mean plasma homocysteine levels (13.59 ± 9.03 vs. 12.95 ± 4.98 μmol/L, P = 0.514), or in the prevalence of hyperhomocysteinemia (17% vs. 21.4%, P = 0.504). This was true both for BD and control groups. In HLA-B51 positive and negative BD patients, mean plasma homocysteine levels were 14.29 ± 12.02 and 12.62 ± 4.79 μmol/L, respectively (P = 0.33), and the prevalence of hyperhomocysteinemia was 20.8% versus 19.5% (P = 0.55). In the control group, the mean plasma homocysteine levels in HLA-B51 positive and negative individuals were 12.85 ± 4.28 and 13.14 ± 5.10 μmol/L, respectively (P = 0.794), and the prevalence of hyperhomocysteinemia was 13% versus 22.1% (P = 0.23). The difference was non-significant regarding sex (P > 0.71) and disease activity (P > 0.31). CONCLUSION In contrast to our previous report, we found no relationship between plasma homocysteine levels and HLA-B51 in this study, either in BD or in the control group.
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Affiliation(s)
- Soraya Shadmanfar
- Rheumatology Department, Baqyiatallah University of Medical Sciences, Baghiatallah Hospital, Tehran, Iran; Behcet's Disease Unit, Rheumatology Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Song YW, Kang EH. Behçet’s disease and genes within the major histocompatibility complex region. Mod Rheumatol 2014. [DOI: 10.3109/s10165-011-0542-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kang EH, Park JW, Park C, Yu HG, Lee EB, Park MH, Song YW. Genetic and non-genetic factors affecting the visual outcome of ocular Behcet's disease. Hum Immunol 2013; 74:1363-7. [PMID: 23831258 DOI: 10.1016/j.humimm.2013.06.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 05/02/2013] [Accepted: 06/14/2013] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To examine the prognostic factors for visual outcome in Korean BD patients with uveitis. METHODS Seventy-seven Korean BD patients with uveitis were enrolled. HLA-B and HLA-A genotypes were determined by PCR-based method. Visual acuity was measured by Snellen chart. Vision loss was graded into visual impairment (VI) defined as VA<20/40 for more than 6 months, loss of useful vision (LUV) as VA < 20/200, and near total blindness (NTB) as VA of light perception or worse. RESULTS VI was associated with a longer duration of uveitis, posterior uveitis, and cataract, LUV with male gender, a longer duration of uveitis, posterior uveitis, and cataract, and NTB with a longer duration of uveitis, cataract, and glaucoma. HLA-B*51 and HLA-A*26:01 did not show any association with VI, LUV, or NTB. However, HLA-B*51 carriers had earlier onset of uveitis and HLA-A*26:01 was strongly associated with posterior uveitis. In patients with posterior uveitis, VI was associated with a longer duration of uveitis and cataract, LUV with a longer duration, and NTB with HLA-B*51. CONCLUSION Longer duration of uveitis, posterior uveitis, male gender, cataract, and glaucoma were found to be associated with poor visual outcome in BD-related uveitis. HLA-B*51 was associated with NTB in patients with posterior uveitis. HLA-A*26:01 showed no association with VI, LUV, or NTB, however, was strongly associated with posterior uveitis.
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Affiliation(s)
- Eun Ha Kang
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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Tappuni AR, Tbakhi A, Sharquie KE, Hayani RK, Al-Kaisi A, Lafi A, Al-Araji A. A comparative study of the genetics of Behcet's disease in Iraq: international collaboration to transfer clinical and laboratory skills to Baghdad medical school and hospitals. Med Confl Surviv 2013; 29:57-68. [PMID: 23729098 DOI: 10.1080/13623699.2013.765201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A collaborative project funded by the Iraqi Research Fellowship Programme of the Council for Assisting Refugee Academics was set up to transfer laboratory and clinical skills in between three clinical research teams in the UK, Jordan and Iraq. The project was set up to study the genetics of the potentially debilitating condition, Behçet's Disease (BD). Blood samples were collected from: 38 BD patients, 28 patients with oral ulcers not related to BD and 32 healthy controls. All samples were analysed using Micro SSP HLA Class I B locus kit (B locus, generic). Logistic regression analysis revealed that samples positive for HLA-B51 were 7.4 times more likely to have BD than the healthy control subjects. The results of this study make a valuable addition to the scientific literature. Additional valuable outcomes include the intellectual exchange and transfer of skills in between the collaborating teams, which led to the establishment of an international research collaboration.
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Affiliation(s)
- A R Tappuni
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
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Pineton de Chambrun M, Wechsler B, Geri G, Cacoub P, Saadoun D. New insights into the pathogenesis of Behçet's disease. Autoimmun Rev 2011; 11:687-98. [PMID: 22197900 DOI: 10.1016/j.autrev.2011.11.026] [Citation(s) in RCA: 198] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 11/27/2011] [Indexed: 01/01/2023]
Abstract
Behçet's disease (BD) is a recurrent systemic inflammatory disorder of unknown origin characterized by oral and genital mucous ulcer, uveitis, and skin lesions. Involvement of large vessels, central nervous system (CNS), gastrointestinal tract and thrombotic events are less frequent but can be life threatening. The aim of this review is to provide new insights into the pathogenesis of BD. Over the past year substantial advances have been done in the understanding of the genetic [1,2] and immunology [3] of BD. BD is at the crossroad between autoimmune and autoinflammatory syndromes. In common with autoimmune diseases BD shares class I MHC association. However, in contrast to autoimmune disorders, BD has clinical features that seem to be mostly autoinflammatory. The pathogenesis of BD is still unknown, but major determinants of the genetic and immune system abnormalities have been reported recently. Triggering infectious factors are supposed to participate in the outbreak of BD in genetically predisposed patients. Two recent large genome-wide association study (GWAS) conducted in Turkey and Japan reported association between single nucleotide polymorphism (SNP) of interleukin (IL)-10 and IL-23R/IL-12RB2 genes and BD. New insights into the perturbations of T cell homeostasis of BD recently emerged. We have recently demonstrated the promotion of Th17 responses and the suppression of regulatory T cells (Tregs) that were driven by interleukin (IL)-21 production and that correlates with BD activity. Inflammatory cells within BD inflammatory lesions included mostly neutrophils, Th1 and Th17 cells, and cytotoxic CD8+ and γδ T cells. Altogether, the recent progresses in the knowledge of BD pathogenesis pave the way for innovative therapy.
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Affiliation(s)
- Marc Pineton de Chambrun
- Department of Internal Medicine and Laboratory I3 Immunology, Immunopathology, Immunotherapy, UMR CNRS 7211, INSERM U959, Groupe Hospitalier La Pitié-Salpetrière, Université Pierre et Marie Curie, Paris 6, Paris, France
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Şahin E, Karaman G, Uslu M, Karul A, Şendur N, Şavk E. Adiponectin levels, insulin resistance and their relationship with serum levels of inflammatory cytokines in patients with Behçet's disease. J Eur Acad Dermatol Venereol 2011; 26:1498-502. [PMID: 22035239 DOI: 10.1111/j.1468-3083.2011.04318.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AIM Increased frequency of cardiovascular disease and its possible relations with insulin resistance have been reported in patients with inflammatory diseases. The aim of our study was to investigate insulin resistance and serum adiponectin levels as cardiovascular risk markers in patients with Behçet's disease. METHOD Study population consisted of 40 patients with Behçet's disease (BD) and a control group composed of age, gender, body mass index-matched 46 healthy individuals. All patients were examined for signs of Behçet's disease. Body mass index, waist and hip circumference were measured. Insulin resistance was evaluated using the homeostasis model assessment-insulin resistance method. Erythrocyte sedimentation rate (ESR), lipid profile, high sensitive CRP (hsCRP), adiponectin, TNF-α, IL-6 and IL-8 levels were measured. RESULTS Erythrocyte sedimentation rate, serum hsCRP and IL-6 levels were significantly higher in patients with BD than those in the controls (P=0.001, P=0.001, P=0.001, respectively). Fasting plasma glucose, insulin levels and lipid profile were not different between the two groups. Insulin resistance and decreased levels of the serum adiponectin were not detected in the patients. There was no relationship between insulin resistance, adiponectin levels and inflammatory markers. Active and inactive patients did not differ in respect of any parameters. CONCLUSION Being a systemic vasculitis, BD may cause cardiovascular involvement. In this study, dyslipidemia, insulin resistance and low adiponectin levels were not detected among our patients with Behçet's disease. Our results suggest that there exists no increased risk for atherosclerotic cardiovascular disease associated with adiponectin levels and insulin resistance in patients with Behçet's disease.
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Affiliation(s)
- E Şahin
- Özel Yüzüncü Yıl Hospital, Ankara, Turkey
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Behçet's disease and genes within the major histocompatibility complex region. Mod Rheumatol 2011; 22:178-85. [PMID: 22042097 DOI: 10.1007/s10165-011-0542-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Accepted: 09/20/2011] [Indexed: 10/16/2022]
Abstract
The role of genetic background in the development of Behçet's disease (BD) is best reflected by the strong association between HLA-B*51 and BD that has been demonstrated across various ethnic groups. The contributions made by other HLA or non-HLA genes to disease susceptibility have been suggested by the results of a number of gene association studies, although the true associations between the genes located within the major histocompatibility complex (MHC) region and BD have often been doubted due to the possibility of linkage disequilibrium of those genes with HLA-B*51. The presence of a true susceptibility gene in the vicinity of HLA-B*51 has also been extensively investigated because of the limited evidence that directly relates HLA-B*51 to the pathogenesis of BD. However, recent genome-wide association studies have confirmed that HLA-B*51 is primarily associated with BD and that there are multiple susceptibility loci other than HLA-B*51. In this review, we discuss BD-associated genes within the MHC region and their biological roles in the pathogenesis of BD.
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Kang EH, Kim JY, Takeuchi F, Kim JW, Shin K, Lee EY, Lee YJ, Lee EB, Park MH, Song YW. Associations between the HLA-A polymorphism and the clinical manifestations of Behcet's disease. Arthritis Res Ther 2011; 13:R49. [PMID: 21429233 PMCID: PMC3132038 DOI: 10.1186/ar3292] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 03/04/2011] [Accepted: 03/24/2011] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION The objective was to investigate associations between the HLA-A gene and Behcet's disease (BD) and its clinical manifestations. METHODS Genotyping for the HLA-A locus was performed using the polymerase chain reaction-Luminex typing method in 223 BD patients and 1,398 healthy controls. RESULTS The phenotypic frequencies of HLA-A*02:07 (odds ratio (OR) = 2.03, P = 0.002), A*26:01 (OR = 1.85, P = 0.008), and A*30:04 (OR = 2.51, P = 0.006) tended to be higher in BD patients than in normal controls, but the frequency of A*33:03 (OR = 0.59, P = 0.003) tended to be lower in BD patients. A meta-analysis adopting our and the Japanese data confirmed the associations of HLA-A*02:07, A*26:01, and A*33:03 with BD. Furthermore, the frequencies of the HLA-A*02:07, A*26:01, and A*30:04 were significantly higher in patients with skin lesions (OR = 2.37, P < 0.0005, Pc < 0.012) and arthritis (OR = 2.32, P = 0.002, Pc = 0.048), with uveitis (OR = 3.01, P < 0.0005, Pc < 0.012), and with vascular lesions (OR = 9.80, P < 0.0005, Pc < 0.012) and a positive pathergy test (OR = 4.10, P = 0.002, Pc = 0.048), respectively, than in controls. In HLA-B*51 non-carriers, these associations were also significant, being much stronger between HLA-A*26:01 and uveitis (OR = 4.19, P < 0.0005, Pc < 0.012) and between HLA-A*30:04 and vascular lesions (OR = 13.97, P < 0.00005, Pc < 0.0012). In addition, HLA-A*30:04 was associated with genital ulcers in HLA-B*51 non-carriers (OR = 3.89, P = 0.002, Pc = 0.048). CONCLUSIONS HLA-A*02:07, A*26:01, and A*30:04 were associated with increased risk for BD, while HLA-A*33:03 with decreased risk. HLA-A*02:07, A*26:01, and A*30:04 were associated with skin lesions and arthritis, with uveitis, and with vascular lesions, genital ulcers, and a positive pathergy test, respectively.
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Affiliation(s)
- Eun Ha Kang
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Hospital, 28 Yeongeon-dong, Jongno-gu, Seoul, Korea
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IRSCHICK EU, PHILIPP S, SHAHRAM F, SCHIRMER M, SEDIGH M, ZIAEE N, GASSNER C, SCHENNACH H, MEYER M, LARCHER C, HEROLD M, SCHOENITZER D, FUCHS D, SCHOENBAUER M, MAASS M, HUEMER HP, DAVATCHI F. Investigation of bacterial and viral agents and immune status in Behcet’s disease patients from Iran. Int J Rheum Dis 2011; 14:298-310. [DOI: 10.1111/j.1756-185x.2011.01601.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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de Menthon M, Lavalley MP, Maldini C, Guillevin L, Mahr A. HLA-B51/B5 and the risk of Behçet's disease: a systematic review and meta-analysis of case-control genetic association studies. ACTA ACUST UNITED AC 2009; 61:1287-96. [PMID: 19790126 DOI: 10.1002/art.24642] [Citation(s) in RCA: 291] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To quantify by meta-analysis the genetic effect of the HLA-B5 or HLA-B51 (HLA-B51/B5) allele on the risk of developing Behçet's disease (BD) and to look for potential effect modifiers. METHODS Relevant studies were identified using the PubMed Medline database and manual searches of the literature. Pooled odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated by using the random-effects model. Subgroup meta-analyses and meta-regression analyses were undertaken to investigate the effects of selected study-level parameters on the pooled OR. Heterogeneity was assessed using the I2 statistic. Pooled results were used to calculate population-attributable risks (PAR) for BD in relationship to HLA-B51/B5. RESULTS A total of 4,800 patients with BD and 16,289 controls from 78 independent studies (published 1975-2007) were selected. The pooled OR of HLA-B51/B5 allele carriers to develop BD compared with noncarriers was 5.78 (95% CI 5.00-6.67), with moderate between-study heterogeneity (I2 = 61%). The subgroup analyses stratifying studies by geographic locations (Eastern Asia, Middle East/North Africa, Southern Europe, Northern/Eastern Europe) yielded consistent OR ranges (5.31-7.20), with I2 ranges of 52-70%. Univariate random-effects meta-regression indicated the percentage of male BD cases (P = 0.008) as a source of heterogeneity. The PAR within the various geographic areas were estimated at 32-52%. CONCLUSION The strength of the association between BD and HLA-B51/B5, and its consistency across populations of various ethnicities, lends further support to this allele being a primary and causal risk determinant for BD. Variations according to sex support an interaction of this allele with BD characteristics.
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Affiliation(s)
- Mathilde de Menthon
- Hôpital Cochin; Université Paris-René Descartes, Assistance Publique Hôpitaux de Paris, Paris, France
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Takemoto Y, Naruse T, Namba K, Kitaichi N, Ota M, Shindo Y, Mizuki N, Gul A, Madanat W, Chams H, Davatchi F, Inoko H, Ohno S, Kimura A. Re-evaluation of heterogeneity in HLA-B*510101 associated with Behçet’s disease. ACTA ACUST UNITED AC 2008; 72:347-53. [DOI: 10.1111/j.1399-0039.2008.01111.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Ocular inflammatory disease comprises of a diverse group of clinical entities that may result from autoimmune processes, infections, or both. While many individual ocular inflammatory diseases are quite rare, ocular inflammation is one of the more common causes of visual disability, including blindness, in the developed world. Better understanding of ocular inflammatory disease is an important step in designing more sophisticated therapies that may help prevent loss of visual function for these patients.
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Affiliation(s)
- R D Levinson
- Ocular Inflammatory Disease Center, Jules Stein Eye Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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Gebreselassie D, Spiegel H, Vukmanović S. Sampling of major histocompatibility complex class I-associated peptidome suggests relatively looser global association of HLA-B*5101 with peptides. Hum Immunol 2006; 67:894-906. [PMID: 17145369 PMCID: PMC2269730 DOI: 10.1016/j.humimm.2006.08.294] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2006] [Revised: 07/18/2006] [Accepted: 08/17/2006] [Indexed: 12/29/2022]
Abstract
We have analyzed peptides associated with six human major histocompatibility complex (MHC) class I allomorphs expressed by the U937 cell line. Peptides were isolated by mild acid elution or by MHC class I immunoprecipitation by using W6/32 monoclonal antibody. Eighty-five peptides were sequenced by mass spectrometry, and their putative binding alleles were assigned using bioinformatic tools. Only three peptides isolated by the two approaches were identical, suggesting that the approaches may yield distinct partially overlapping peptide populations. Mild acid treatment-derived peptides manifested overall characteristics suggestive of relatively lower affinity of binding for MHC class I. Interestingly, a large proportion of putative HLA-B*5101-binding peptides was evident among the mild acid treatment-eluted peptides, and to a lesser degree in the affinity-purified peptide pool. These results suggest that HLA-B*5101 may bind a potentially large pool of peptides with relatively lower affinity. We suggest that lower affinity of peptide binding may be the basis for inefficient tolerance to HLA-B*5101-binding self-peptides, a predisposing factor for the development of Behçet disease.
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Affiliation(s)
| | | | - Stanislav Vukmanović
- Address correspondence to: Stanislav Vukmanović Center for Cancer and Immunology Research, Children's Research Institute, Children's National Medical Center, 111 Michigan Avenue NW, Washington, DC 20010-2970. Phone: (202) 884-3078; FAX: (202) 884-3929; e-mail:
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28
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Itoh Y, Inoko H, Kulski JK, Sasaki S, Meguro A, Takiyama N, Nishida T, Yuasa T, Ohno S, Mizuki N. Four-digit allele genotyping of the HLA-A and HLA-B genes in Japanese patients with Behcet's disease by a PCR-SSOP-Luminex method. ACTA ACUST UNITED AC 2006; 67:390-4. [PMID: 16671946 DOI: 10.1111/j.1399-0039.2006.00586.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The present study represents the first four-digit allele genotyping of HLA-A and -B in Japanese Behcet's disease (BD) patients and controls using a new genotyping method (named the PCR-SSOP-Luminex method) to determine the association of certain HLA-A or -B alleles with BD. Peripheral blood lymphocytes were collected from 180 Japanese BD patients and 170 healthy controls. The genotype frequency of HLA-B*5101 was significantly increased in the patients (61.7%) as compared with the controls (15.9%) (Pc = 1 x 10(-16), OR = 8.5). When we recalculated the phenotype frequencies after excluding the HLA-B*51-positive patients and controls to account for the effects of the linkage disequilibrium and the abundance of the HLA-B*51 allele, the frequencies of HLA-A*2602 and HLA-B*3901 had a weak association in the patient group without HLA-B*51 as compared with the control group without HLA-B*51 (A*2602; Pc = 0.130, OR = 4.3, B*3901; Pc = 0.099, OR = 3.5). This study confirmed on the basis of using a new and more accurate genotyping method that Japanese BD patients have a strong primary association with HLA-B*5101. The significant increase of HLA-A*2602 and B*3901 in the patient group without HLA-B*51 suggests that these two alleles might also have some secondary influence on the onset of BD.
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Affiliation(s)
- Y Itoh
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004, Japan
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29
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Ikbal M, Atasoy M, Pirim I, Aliagaoglu C, Karatay S, Erdem T. The alteration of sister chromatid exchange frequencies in Behçet's disease with and without HLA-B51. J Eur Acad Dermatol Venereol 2006; 20:149-52. [PMID: 16441621 DOI: 10.1111/j.1468-3083.2006.01386.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND The analysis of sister chromatid exchange (SCE) is a cytogenetic technique used to show DNA damage as a result of an exchange of DNA fragments between sister chromatids. It is known that there is an increased SCE frequency in Behçet's disease (BD). OBJECTIVE To investigate whether human leucocyte antigen (HLA)-B51-positive patients with Behçet's disease exhibit higher SCE frequencies than those without HLA-B51. METHODS Lymphocytes from 75 patients (38 women, 37 men) and from 50 controls (28 women, 22 men) were cultured in darkness for 72 h in the presence of bromodeoxyuridine. Metaphase chromosomes were stained with a fluorescence plus Giemsa technique after a standard harvest procedure. For HLA-B51 typing, DNA was extracted from ethylenediaminetetraacetic acid blood samples and HLA-B5 allele genotyping was performed by the polymerase chain reaction (PCR)-sequence specific primer method. RESULTS Thirty-nine of 75 patients with BD (52%) and 15 of 50 controls (30%) were found HLA-B51-positive. The SCE frequencies in HLA-B51-positive patients were higher than in HLA-B51-negative ones (P < 0.001), whereas no difference was detected in the control group. CONCLUSION This study revealed that there was a significant association between elevated SCE frequencies and existence of HLA-B51 patients with BD.
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Affiliation(s)
- M Ikbal
- Ataturk University, Medical Faculty, Department of Medical Genetics, Erzurum, Turkey
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30
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Abstract
Behçet's syndrome (BS; Adamantiades syndrome) is the association of the triple symptom complex of recurrent aphthous stomatitis (RAS) with genital ulceration, and eye disease (especially iridocyclitis) though a number of other systemic manifestations may also be seen. BS mainly affects young adult males, and there is an association with HLA-B5 and HLA-B51 (B5101). Features such as arthralgia and leucocytoclastic vasculitis suggest an immune-complex mediated basis, which is supported by finding circulating immune complexes and, although the antigen responsible is unidentified, heat shock proteins have been implicated. An inflammatory disorder, BS is now considered as a systemic vasculitis, characterised by a very wide spectrum of clinical features and by unpredictable exacerbations and remissions.
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Affiliation(s)
- M Escudier
- King's College London Dental Institute, London, UK
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Wang YS, Ma XL, Sun SH, Sun Y, Yu B. Development of an Oligochip for Genotyping Human Leukocyte Antigen-B51 and Its Clinical Application. ACTA ACUST UNITED AC 2005; 9:292-6. [PMID: 16379541 DOI: 10.1089/gte.2005.9.292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Human leukocyte antigen (HLA) has been associated with Behcet's disease (BD), among which HLA-B51 is the most strongly associated genetic marker. The sandwich hybridization technique was applied in the design of the specific oligonucleotide probes to ensure the specific and accurate results. The probe-spotted chip was hybridized with the polymerase chain reaction (PCR) amplicons including nine suballeles (B*5101-B*5109) of exons 2 and 3 of HLA-B51 gene to determine the HLA-B51 genotypes. The results were subsequently confirmed by (PCR-SSP) and sequencing and were identical to those from polymerase chain reaction-sequencing specific primers (PCR-SSP) in 27 patients with BD and 30 healthy controls. This suggests that we successfully developed the oligochip for Behcet's-associated gene HLA-B51, which can effectively and accurately identify the HLA-B51 genotypes.
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Affiliation(s)
- Yun-shan Wang
- Central Laboratory, Ji'nan Central Hospital, Clinical Medical College of Shandong University, China.
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32
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Valluri V, Valluei V, Mustafa M, Santhosh A, Middleton D, Alvares M, Alvales M, El Haj E, Gumama O, Abdel-Wareth L, Abdel-Waieth L. Frequencies of HLA-A, HLA-B, HLA-DR, and HLA-DQ phenotypes in the United Arab Emirates population. ACTA ACUST UNITED AC 2005; 66:107-13. [PMID: 16029430 DOI: 10.1111/j.1399-0039.2005.00441.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The high degree of polymorphism of the human leukocyte antigen (HLA) system provides means for the study of diversity in different populations. The aim of this work is to study the HLA phenotype frequencies in the United Arab Emiratis in comparison with other geographically related Arabs, Iranians, and Asians, all living in the United Arab Emirates (UAE). Healthy blood donors and potential kidney or bone marrow donors were typed for HLA class I (n = 1880) and class II (n = 2022). Only one representative member of each family was included to avoid bias. UAE Emiratis, Arabs of Arabian Gulf Peninsula (AGP), Arabs of South Mediterranean (SMR), North African Arabs (NA), Iranians, and Asians. HLA typing was done by microlymphocytotoxicity method and/or low-resolution polymerase chain reaction-sequence-specific primer techniques. As an individual antigen, HLA-A2 had the highest frequency in all populations studied, however, the frequency of the broad antigen A19 surpassed A2 in all the groups except the AGP Arabs and Iranians. B5 was the predominant B antigen in all groups except the SMR and Asians. Amongst the class II broad antigens, DR2 was the most frequent antigen in UAE, AGP Arabs, Iranians, and Asians. The overall frequency of DQ1 was high in all groups except the SMR Arabs who had an almost equal distribution of DQ1 and DQ3. In conclusion, this study indicates that the most frequent antigens in the UAE population are HLA-A19, HLA-A2, HLA-B5, and HLA-DR2. It also sheds light on the similarities between the UAE Emiratis, AGP Arabs, Iranians, and Asians, specially the predominance of DR2 of the class II antigens.
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Affiliation(s)
- V Valluri
- Immunology and Specialized testing, Mafrag Hospital, Abu Dhabi, UAE
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33
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Pirim I, Atasoy M, Ikbal M, Erdem T, Aliagaoglu C. HLA class I and class II genotyping in patients with Behcet's disease: a regional study of eastern part of Turkey. ACTA ACUST UNITED AC 2005; 64:293-7. [PMID: 15304011 DOI: 10.1111/j.1399-0039.2004.00280.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Class I human leucocyte antigen (HLA)-B51 is well known to be associated with Behcet's disease in many ethnic groups. However, there has been no published paper with respect to its association with HLA class I and class II among the Turkish people who live in the eastern region of Turkey. Moreover, as it is known that B51 antigen is encoded by 21 alleles, B*5101-5121, HLA-B51 allele typing was performed, as well as HLA class I and class II genotyping of 75 patients with the disease and the 54 individuals in the matched control group. The result shows that the HLA-B51 frequency was significantly higher (58.66%) in the patient group, compared to that in the control group (18.51%) (OR = 6.245). In the subtyping of B51 alleles, 44 B51-positive patients possessed B*5101 (45.5%), B*5108 (25%), B*5105 (9.1%) and B*5104 (4.5%). There was no significant difference in the HLA-B51 allelic distribution between the patient group and the control group. However, homozygous carriers of HLA-B51 showed considerably high risk (OR = 2.647) in the patient group, compared to that in the control group. In the genotyping of class II HLA alleles, while HLA-DRB1*04 (45.3%) and HLA-DRB1*07 (24%) were the predominant alleles in the patient group, DRB1*11 (50%) appeared to be more common in the control group.
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Affiliation(s)
- I Pirim
- Ataturk University, Medical School, Department of Medical Biology, 25240-Erzurum, Turkey.
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Soto-Vega E, García-Muñoz R, Richaud-Patin Y, Zúñiga-Ramos J, Crispín JC, Díaz-Jouanen E, Flores-Suárez LF, Llorente L, Granados J. Class I and class II MHC polymorphisms in Mexican patients with Behçet’s disease. Immunol Lett 2004; 93:211-5. [PMID: 15158619 DOI: 10.1016/j.imlet.2004.03.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2004] [Revised: 03/25/2004] [Accepted: 03/27/2004] [Indexed: 10/26/2022]
Abstract
Behçet's disease is a multi-system inflammatory disorder of unknown etiology. The disease is more prevalent in Eastern Mediterranean countries and Japan where there is a linkage to HLA-B51. Mexican Mestizos are suitable subjects for studying the role of ethnicity in the susceptibility to Behçet's disease. High-resolution HLA class I and class II typing was performed by polymerase chain reaction sequence-specific oligonucleotide (PCR-SSO) reverse dot blot and PCR-single-strand polymorphism in 32 patients with Behçet's disease and 99 healthy ethnically-matched controls. A significant increased frequency of HLA-B(*)44 (P = 0.02; OR = 2.78; CI 95% = 1.1-7.7), HLA-B(*)52 (P = 0.02; OR = 5.33; CI 95% = 1.07-29.1), and HLA-B(*)56 (P = 0.003; OR = 4.19; CI 95% = 3.37-5.21) as well as HLA-DRB1(*)01 and HLA-DRB1(*)13 (p = 0.007; OR = 3.36; CI 95% = 1.22-9.27) was found in Mexican patients with Behçet's disease when compared to controls. The low frequency of native markers in Mexican Mestizo patients with Behçet's disease suggests that genetic admixture between Eastern Mediterraneans and Orientals with Amerindians is a recent event that increased the risk of developing Behçet's disease in the Mexican population.
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Affiliation(s)
- Elena Soto-Vega
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga 15, Tlalpan 14000, México, D.F., Mexico
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35
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Shahram F, Davatchi F, Nadji A, Jamshidi A, Bahar K, Akbarian M, Chams C. HLA-B51 frequency in Iranian patients with Behçet's disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2003; 528:229-30. [PMID: 12918696 DOI: 10.1007/0-306-48382-3_45] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- F Shahram
- Behçet's Disease Unit, Rheumatology Research Center, Tehran University for Medical Sciences, Shariati Hospital, Tehran, Iran
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36
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Verity DH, Wallace GR, Vaughan RW, Stanford MR. Behçet's disease: from Hippocrates to the third millennium. Br J Ophthalmol 2003; 87:1175-83. [PMID: 12928293 PMCID: PMC1771837 DOI: 10.1136/bjo.87.9.1175] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Behçet's disease (BD) is characterised by recurrent episodes of orogenital aphthae, systemic vasculitis, and systemic and retinal venous thrombosis. An association between HLA-B51 and BD was first identified over 20 years ago, but recently identified gene associations implicate regions both within and without the MHC in the immunological events underlying the lesions in BD. These include allelic variants within the tumour necrosis factor gene region and within the MHC class I chain related gene region, the factor V Leiden mutation, which is associated with retinal vascular occlusion, and alleles of the intercellular adhesion molecule gene. No single causative gene for BD has emerged; the evidence indicates that the underlying immune events in BD are triggered by a microbial antigen and subsequently driven by genetic influences which control leucocyte behaviour and the coagulation pathways. Knowledge of these risk factors may permit a more accurate prognosis for a given patient, and identify new pathways for more targeted intervention than is currently available.
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37
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Mizuki N, Ota M, Katsuyama Y, Yabuki K, Ando H, Shiina T, Palimeris GD, Kaklamani E, Ito D, Ohno S, Inoko H. Sequencing-based typing of HLA-B*51 alleles and the significant association of HLA-B*5101 and -B*5108 with Behçet's disease in Greek patients. TISSUE ANTIGENS 2002; 59:118-21. [PMID: 12028538 DOI: 10.1034/j.1399-0039.2002.590207.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Behçet's disease (BD) is widely known to be strongly associated with human leukocyte antigen (HLA) B51 in many different ethnic groups.Recently, HLA-B51 allele typing of Greek BD patients was performed to study the distribution of B*5101-B*5107 alleles in this Greek population, the B51 antigen strongly associated with BD was found to be predominantly encoded by allele B*5101. As it is now known that the B51 antigen can be encoded by 21 alleles, B*5101-B*5121, we performed HLA-B*51 allele genotyping among 58 Greek patients with BD. After serological HLA typing, typing of HLA-B*51 alleles was performed using the polymerase chain reaction-sequencing-based typing (PCR-SBT) method. The frequency of the B51 antigen was found to be significantly higher in the patient group as compared with the control group (75.9% of patients vs 22.0% of controls. In the genotyping of B51 alleles, 34 out of 44 B51-positive patients possessed B*5101, 13 out of the 44 carried B*5108. In contrast, all of the 9 B51-positive normal controls carried B*5101. This study revealed a strong association between Greeks with BD, both B*5101, B*5108, provided important insights into the molecular mechanism underlying the association between HLA status, this disease.
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Affiliation(s)
- N Mizuki
- Department of Ophthalmology, Yokohama City University School of Medicine, Japan
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