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Stuhlmüller B, Schneider U, González-González JB, Feist E. Disease Specific Autoantibodies in Idiopathic Inflammatory Myopathies. Front Neurol 2019; 10:438. [PMID: 31139133 PMCID: PMC6519140 DOI: 10.3389/fneur.2019.00438] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 04/10/2019] [Indexed: 01/21/2023] Open
Abstract
Idiopathic inflammatory myopathies represent still a diagnostic and therapeutic challenge in different disciplines including neurology, rheumatology, and dermatology. In recent years, the spectrum of idiopathic inflammatory myopathies has been significantly extended and the different manifestations were described in more detail leading to new classification criteria. A major breakthrough has also occurred with respect to new biomarkers especially with the characterization of new autoantibody-antigen systems, which can be separated in myositis specific antibodies and myositis associated antibodies. These markers are detectable in approximately 80% of patients and facilitate not only the diagnostic procedures, but provide also important information on stratification of patients with respect to organ involvement, risk of cancer and overall prognosis of disease. Therefore, it is not only of importance to know the significance of these markers and to be familiar with the optimal diagnostic tests, but also with potential limitations in detection. This article focuses mainly on antibodies which are specific for myositis providing an overview on the targeted antigens, the available detection procedures and clinical association. As major tasks for the near future, the need of an international standardization is discussed for detection methods of autoantibodies in idiopathic inflammatory myopathies. Furthermore, additional investigations are required to improve stratification of patients with idiopathic inflammatory myopathies according to their antibody profile with respect to response to different treatment options.
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Affiliation(s)
- Bruno Stuhlmüller
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Udo Schneider
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - José-B González-González
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin, Berlin, Germany.,Labor Berlin-Charité Vivantes GmbH, Berlin, Germany
| | - Eugen Feist
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin, Berlin, Germany
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Positive association of genetic variations in the phospholipase C-like 1 gene with dermatomyositis in Chinese Han. Immunol Res 2016; 64:204-12. [PMID: 26603167 DOI: 10.1007/s12026-015-8738-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) are autoimmune diseases with an underlying yet undefined genetic component. Recently, phospholipase C-like 1 (PLCL1) has been identified as a potential genetic susceptibility locus for dermatomyositis (DM) in patients of European ancestry. Here, association between PLCL1 polymorphisms and IIMs was investigated in Chinese Han. Genomic DNA was isolated from blood samples (2 mL) collected from Chinese Han (≥18 years) with polymyositis (PM, n = 286) or dermatomyositis (DM, n = 535) and ethnically matched controls (n = 968). Patients and controls were genotyped for five SNPs (rs938929, rs1518364, rs6738825, rs2117339, and rs7572733) previously associated with DM, with the Sequenom MassARRAY system. SNPs rs6738825 and rs7572733 were found to be associated with the development of DM in Chinese Han (P c = 0.015; P c = 0.025, respectively) as well as the risk A allele of rs938929 and T allele of rs1518364 (P c = 0.030; P c = 0.029). None of the five SNPs were associated with PM (all P c > 0.05). The frequency of the two haplotypes of these five SNPs was also significantly different between DM patients and healthy controls. In addition, conditional analysis with rs6738825 revealed that these SNPs were not independent factors contributing to DM. Finally, a novel association between rs6738825 and rs7572733 and DM with complicating interstitial lung disease was observed (ILD; P c = 0.040; P c = 0.030, respectively). A positive association between PLCL1 polymorphisms and DM patients and DM patients with ILD was observed, indicating that PLCL1 might be the susceptibility gene for DM patients in Chinese Han.
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Chen S, Wu W, Li J, Wang Q, Li Y, Wu Z, Zheng W, Wu Q, Wu C, Zhang F, Li Y. Single nucleotide polymorphisms in the FAM167A-BLK gene are associated with polymyositis/dermatomyositis in the Han Chinese population. Immunol Res 2016; 62:153-62. [PMID: 25846585 PMCID: PMC4438202 DOI: 10.1007/s12026-015-8646-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) are autoimmune diseases influenced by genetic background and environmental factors. Recently, FAM167A-BLK gene has been identified as a potential genetic susceptibility locus for dermatomyositis (DM) in patients of European and Japanese populations. Our aim here was to investigate the association between FAM167A-BLK polymorphisms and IIMs risk in Chinese Han. The FAM167A-BLK single nucleotide polymorphisms (SNPs) rs2736340, rs7812879, rs13277113, rs2618479, rs2254546 and rs2248932 were analyzed in polymyositis (PM) patients (n = 310), DM patients (n = 535) and 968 ethnically matched healthy controls, with the Sequenom MassArray system. Our present study demonstrated that strong allele association was observed in overall PM/DM and PM patients for rs2736340 (Pc = 6.48 × 10−3; Pc = 0.013, respectively), rs7812879 (Pc = 0.017; Pc = 0.034, respectively) and rs13277113 (Pc = 0.011; Pc = 0.047, respectively). These three SNPs were significantly associated with interstitial lung disease (ILD) in overall PM/DM patients (all, Pc < 0.05). The frequency of the five haplotypes of the five SNPs (rs2736340, rs7812879, rs13277113, rs2618479 and rs2254546) was also significantly different between overall PM/DM, PM or DM patients and healthy controls. This was the first study to demonstrate that the FAM167A-BLK polymorphisms were associated with Chinese PM/DM patients or these patients with ILD, indicating that PM/DM might share common gene with other autoimmune diseases.
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Affiliation(s)
- Si Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, 41 Damucang Hutong, Xicheng District, Beijing, 100032, China
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Ochiai M, Sato E, Tanaka E, Tochihara M, Shimizu Y, Osawa H, Sidara K, Sugimoto N, Hoshi D, Kawaguchi Y, Taniguchi, A, Yamanaka H. Successful delivery in a patient with clinically amyopathic dermatomyositis during pregnancy despite first-trimester acute exacerbation of interstitial lung disease. Mod Rheumatol 2015; 27:364-368. [DOI: 10.3109/14397595.2014.975906] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Moeko Ochiai
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Eri Sato
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Eiichi Tanaka
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Mari Tochihara
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoko Shimizu
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Hikota Osawa
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kumi Sidara
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Naoki Sugimoto
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Daisuke Hoshi
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yasushi Kawaguchi
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Atsuo Taniguchi,
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Hisashi Yamanaka
- Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan
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Chen S, Wang Q, Wu Z, Wu Q, Li P, Li Y, Li J, Deng C, Wu C, Gao L, Zhang F, Li Y. Associations between TNF-α-308A/G polymorphism and susceptibility with dermatomyositis: a meta-analysis. PLoS One 2014; 9:e102841. [PMID: 25101759 PMCID: PMC4125139 DOI: 10.1371/journal.pone.0102841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 06/23/2014] [Indexed: 11/19/2022] Open
Abstract
Background Some surveys had inspected the effects of the tumor necrosis factor-α (TNF-α)-308A/G polymorphism on susceptibility to dermatomyositis (DM), and showed mixed results. To briefly review these consequences, a comprehensive meta-analysis was carried out to estimate the relationship between them much more accurately. Methods Relevant documents dated to February 2014 were acquired from the PUBMED, MEDLINE, and EMBASE databases. The number of the genotypes and/or alleles for the TNF-α-308A/G in the DM and control subjects was extracted and statistical analysis was conducted using STATA 11.2 software. Summary odds ratios (ORs) with their 95% confidence intervals (95% CIs) were used to calculate the risk of DM with TNF-α-308A/G. Stratified analysis based on ethnicity and control population source was also performed. Results 555 patients with DM and 1005 controls from eight published investigations were finally involved in this meta-analysis. Combined analysis revealed that the overall ORs for the TNF-α-308A allele were 2.041 (95% CIs 1.528–2.725, P<0.0001) in DM. Stratification by ethnicity indicated the TNF-α-308A allele polymorphism was found to be significantly associated with DM in Europeans (OR = 1.977, 95% CI 1.413–2.765, P<0.0001). The only study conducted on TNF-α-308A/G polymorphism in Asians could not be used in ethnicity-stratified meta-analysis. Meta-analysis of the AA+AG vs. GG (dominant model) and AA vs. GG (additive model) of this polymorphism revealed a significant association with DM in overall populations and Europeans. Conclusions Our meta-analysis demonstrated that the TNF-α-308A/G polymorphism in the TNF gene might contribute to DM susceptibility, especially in European population. However, further studies with large sample sizes and among different ethnicity populations should be required to verify the association.
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Affiliation(s)
- Si Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qian Wang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Ziyan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qingjun Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Ping Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Yuan Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Jing Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chuiwen Deng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chanyuan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Lei Gao
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Fengchun Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Yongzhe Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
- * E-mail:
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Horai Y, Isomoto E, Koga T, Okada A, Kawashiri SY, Tamai M, Yamasaki S, Nakamura H, Origuchi T, Hamaguchi Y, Fujimoto M, Kuwana M, Kawakami A. Early diagnosis and treatment for remission of clinically amyopathic dermatomyositis complicated by rapid progress interstitial lung disease: a report of two cases. Mod Rheumatol 2014. [DOI: 10.3109/s10165-012-0637-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Yoshiro Horai
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Eriko Isomoto
- The Japanese Red Cross Nagasaki Genbaku Hospital,
Morimachi 3-15, Nagasaki 852-8511, Japan
| | - Tomohiro Koga
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Akitomo Okada
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Shin-ya Kawashiri
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Mami Tamai
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Satoshi Yamasaki
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Hideki Nakamura
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Tomoki Origuchi
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
- Nagasaki University School of Health Sciences,
Nagasaki, Japan
| | - Yasuhito Hamaguchi
- Department of Dermatology, Graduate School of Medical Science, Kanazawa University,
13-1 Takaramachi, Kanazawa, Ishikawa 920-8641, Japan
| | - Manabu Fujimoto
- Department of Dermatology, Graduate School of Medical Science, Kanazawa University,
13-1 Takaramachi, Kanazawa, Ishikawa 920-8641, Japan
| | - Masataka Kuwana
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine,
35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Atsushi Kawakami
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University,
1-7-1 Sakamoto, Nagasaki 852-8501, Japan
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Miwa M, Nakamura Y, Nagasaka T, Shindo K, Takiyama Y. [Atypical distribution of muscular atrophy in a 29-year-old man with polymyositis and anti-SRP antibodies]. Rinsho Shinkeigaku 2012; 52:234-8. [PMID: 22531655 DOI: 10.5692/clinicalneurol.52.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 29-year-old man developed muscle weakness in the neck at age 27. An increasing serum creatine kinase (CK) activity was detected. The first examination at our hospital revealed severe muscular atrophy at the front of the neck. Subsequently, muscular atrophy and weakness developed in the shoulders and upper extremities with an increasing serum CK level, which reached 9,159 IU/l. Needle electromyography (EMG) was not able to reveal typical myopathic change represented low-amplitude motor unit potentials (MUPs) in the proximal parts of the upper and lower extremities at the first examination, but in the course of the disease, the MUPs amplitude decrease in the same muscles. Serum examination gave a positive result for anti-signal recognition particle (SRP) antibodies. A biopsy of the deltoid muscle revealed necrotizing myopathy including small angular fiber-like atrophy without inflammatory cell infiltration or fibrotic proliferation. He was treated with prednisolone and tacrolimus with the diagnosis of polymyositis. The characteristic feature in this patient is that muscular atrophy and weakness were mainly observed in the neck. Moreover, the neurogenic changes on EMG in the early stage are also observed on atypical. Polymyositis with anti-SRP antibodies has the distinctive feature of typical polymyositis with cellular infiltration clinically and pathologically. In this respect, this case has striking and suggestive features of polymyositis with anti-SRP antibodies.
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Affiliation(s)
- Michiaki Miwa
- Department of Neurology, Faculty of Medicine, University of Yamanashi
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Horai Y, Isomoto E, Koga T, Okada A, Kawashiri SY, Tamai M, Yamasaki S, Nakamura H, Origuchi T, Hamaguchi Y, Fujimoto M, Kuwana M, Kawakami A. Early diagnosis and treatment for remission of clinically amyopathic dermatomyositis complicated by rapid progress interstitial lung disease: a report of two cases. Mod Rheumatol 2012; 23:190-4. [PMID: 22460910 DOI: 10.1007/s10165-012-0637-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 03/12/2012] [Indexed: 10/28/2022]
Abstract
We report two cases of clinically amyopathic dermatomyositis (CADM) complicated by rapid progress interstitial lung disease (RPILD). The diagnosis of CADM was based on Gottron's papule and RPILD, and the absence of muscle weakness. The female patients were treated with early immunosuppressive therapies including steroid pulse therapy, resulting in significant improvement in respiratory symptoms, clinical data, and imaging. Measurement of anti-CADM-140/MDA5 antibody was useful for obtaining a definitive diagnosis of CADM in these cases.
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Affiliation(s)
- Yoshiro Horai
- Unit of Translational Medicine, Department of Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
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Ingegnoli F, Lubatti C, Ingegnoli A, Boracchi P, Zeni S, Meroni PL. Interstitial lung disease outcomes by high-resolution computed tomography (HRCT) in Anti-Jo1 antibody-positive polymyositis patients: a single centre study and review of the literature. Autoimmun Rev 2011; 11:335-40. [PMID: 21985773 DOI: 10.1016/j.autrev.2011.09.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 09/25/2011] [Indexed: 01/27/2023]
Abstract
Interstitial lung disease (ILD) is a frequent complication of inflammatory myopathies with high rates of morbidity and mortality. Antibodies against aminoacyl-tRNA-synthetases are the strongest predictive factors in ILD. In this study, we reviewed the literature and we retrospectively analysed high-resolution computed tomography (HRCT) findings in a cohort of 131 consecutive subjects: 75 with polymyositis (PM), 43 with dermatomyositis (DM), one with amyophatic PM, two with paraneoplastic syndromes, and 10 with overlapping syndromes. The inclusion criteria were PM/DM, anti-Jo1 antibody positivity, and HRCT-assessed ILD. The effect of 12 months' treatment with cyclophosphamide (CYC) or cyclosporin A (CsA) plus steroids was assessed by comparing baseline and follow-up HRCT scans for evidence of stability, improvement or worsening. Fifteen patients (11.5%) had ILD and were Jo-1 positive. They were all women with PM, and had a mean age of 47.33 years and a median duration of symptoms of 7.26 months. At baseline, HRCT showed ground-glass attenuations in eight cases, septal thickening in seven, and honeycombing in four. Twelve months after diagnosis, ILD had worsened in nine patients (60%; exact confidence interval [ECI] 32-84) and was stable in four (two patients were lost to follow-up). Seven of the 15 patients were treated with CsA, and 12-month HRCT revealed a worsening in ILD in five cases (71%; ECI 0.29-0.96); ILD also worsened (ECI 16-84) in four of the eight patients treated with CYC pulses (50%). The evolution of the HRCT findings was not significantly different between the two groups. Our findings confirm that ILD is a common early manifestation in patients with Jo1-positive PM. Over twelve months, HRCT showed worsening ILD in most of our patients, with no difference in the HRCT changes between those treated with CYC or CsA.
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Affiliation(s)
- Francesca Ingegnoli
- Division of Rheumatology, Istituto Gaetano Pini, University of Milan, Italy.
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Polymyositis/dermatomyositis and nasopharyngeal carcinoma: The Epstein–Barr virus connection? J Clin Virol 2010; 49:290-5. [DOI: 10.1016/j.jcv.2010.08.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 07/12/2010] [Accepted: 08/28/2010] [Indexed: 11/19/2022]
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Koreeda Y, Higashimoto I, Yamamoto M, Takahashi M, Kaji K, Fujimoto M, Kuwana M, Fukuda Y. Clinical and pathological findings of interstitial lung disease patients with anti-aminoacyl-tRNA synthetase autoantibodies. Intern Med 2010; 49:361-9. [PMID: 20190466 DOI: 10.2169/internalmedicine.49.2889] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the clinicopathological characteristics of interstitial lung disease (ILD) patients with anti-aminoacyl-tRNA synthetase (anti-ARS) autoantibodies. Patients and Methods We examined 14 ILD patients with anti-ARS autoantibodies between 2004 and 2007 and retrospectively investigated their clinical, radiographic, and pathological findings. RESULTS Anti-Jo-1 antibodies were the most common (10 of 14), followed by anti-OJ, anti-KS, and anti-EJ (1 each for 3 patients); 1 patient with polymyositis had both anti-Jo-1 and anti-PL-12 antibodies. Ten patients had a chronic clinical course, whereas 4 presented with subacute deterioration. Of 8 patients with myositis, 1 (12.5%) had myositis-preceding ILD, 3 (37.5%) had ILD-preceding myositis, and 4 (50%) had simultaneous onset. Chest high-resolution computed tomography frequently showed lung-base predominant ground glass opacities (GGO) with volume loss. The results of surgical lung biopsies indicated that 4 patients had nonspecific interstitial pneumonia (NSIP) and/or organizing pneumonia (OP) patterns. All but 1 received corticosteroid therapy, and 6 patients were also given cyclosporin. The mean duration of follow-up was 22 months (range, 5-47 months). ILD improved in 9 patients and stabilized in 3; however, in 1 patient, it initially improved during 6 months, then progressively worsened despite treatment, and finally resulted in death. CONCLUSION These results indicate that ILD patients with anti-ARS antibodies usually have a chronic clinical course, lung-base predominant GGO with volume loss, NSIP and/or OP patterns, and a good response to corticosteroid treatment; however, some have a rapidly worsening course and recurrence, despite therapy.
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Affiliation(s)
- Yoshimizu Koreeda
- Division of Respiratory Medicine, Respiratory and Stress Care Center, Kagoshima University Hospital.
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Gran JT, Molberg Ø, Dobloug GC, Andersson H, Taraldsrud E, Scheie D. [Myositis-specific autoantibodies]. TIDSSKRIFT FOR DEN NORSKE LEGEFORENING 2009; 129:1631-4. [PMID: 19721478 DOI: 10.4045/tidsskr.09.35501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND Myositis-specific antibodies (MSA) are autoantibodies that are almost exclusively detected in idiopathic inflammatory myopathies (IIM). This article provides an overview of these autoantibodies and how they can be used clinically to identify subgroups of IIM. MATERIAL AND METHODS The article is based on a non-systematic literature review and our own experience. RESULTS MSA can be detected in up to 50 % of patients with IIM. Patients with anti-synthetase antibodies have a constellation of clinical findings termed "the anti-synthetase syndrome", in which interstitial lung disease dominates the clinical picture. Anti-Mi2 antibodies is another myositis-specific antibody. Patients with anti-Mi2 antibodies often have classical dermatomyositis, while the anti-SRP antibody identifies patients with severe myopathy, poor response to treatment with corticosteroids and histological findings of muscle cell necrosis - often lacking inflammatory infiltrates. The newly detected anti-CADMp140 appears to be associated with amyopathic or hypomyopathic dermatomyositis, previously called dermatomyositis sine myositis. Anti-p155 antibodies are most often found in patients who also have cancer. INTERPRETATION Myositis-specific antibodies may be useful for identification of clinical subgroups of IIM and can thereby affect the choice of medical treatment.
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Affiliation(s)
- Jan Tore Gran
- Revmatologisk avdeling, Oslo universitetssykehus, Rikshospitalet, 0027 Oslo, Norway.
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