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Anti NXP2 antibody

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https://www.readbyqxmd.com/read/30267437/diagnostic-potential-of-sarcoplasmic-mxa-expression-in-subsets-of-dermatomyositis
#1
Akinori Uruha, Yves Allenbach, Jean-Luc Charuel, Lucile Musset, Audrey Aussy, Olivier Boyer, Kuberaka Mariampillai, Océane Landon-Cardinal, Camille Rasmussen, Loïs Bolko, Thierry Maisonobe, Sarah Leonard-Louis, Shigeaki Suzuki, Ichizo Nishino, Werner Stenzel, Olivier Benveniste
AIMS: To elucidate the diagnostic value of sarcoplasmic expression of myxovirus resistance protein A (MxA) for dermatomyositis (DM) specifically analyzing different DM subforms, and to test the superiority of MxA to other markers. METHODS: Immunohistochemistry for MxA and retinoic acid-inducible gene I (RIG-I) was performed on skeletal muscle samples and compared with the item presence of perifascicular atrophy (PFA) in 57 DM patients with anti-Mi-2 (n=6), -TIF1-γ (n=10), -NXP2 (n=13), -MDA5 (n=10), or -SAE (n=1) autoantibodies and with no detectable autoantibody (n=17)...
September 28, 2018: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/30230971/analysis-of-autoantibody-profiles-in-two-asbestiform-fiber-exposure-cohorts
#2
Jean C Pfau, Christopher Barbour, Brad Black, Kinta M Serve, Marvin J Fritzler
An increased risk for Systemic Autoimmune Diseases (SAID) was reported in the population of Libby, Montana, where extensive exposure to asbestiform amphiboles occurred through mining and use of asbestiform fiber-laden vermiculite. High frequencies of antinuclear autoantibodies (ANA) were detected in individuals and mice exposed to Libby Asbestiform Amphiboles (LAA). Among the 6603 individuals who have undergone health screening at the Center for Asbestos Related Diseases (CARD, Libby MT), the frequencies of rheumatoid arthritis, systemic lupus erythematosus, sarcoidosis, and systemic sclerosis are significantly higher than expected prevalence in the United States...
September 19, 2018: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29995816/anti-nxp2-antibody-positive-immune-mediated-necrotizing-myopathy-associated-with-acute-myeloid-leukemia-a-case-report
#3
Lina Su, Yue Yang, Yuan Jia, Xu Liu, Wei Zhang, Yun Yuan, Zhanguo Li
RATIONALE: Idiopathic inflammatory myopathies have been extensively reported associated with malignancy. Immune-mediated necrotizing myopathy (IMNM), however, has rarely been connected with malignancy including acute myeloid leukemia (AML). PATIENT CONCERNS: A 65-year-old woman was diagnosed with AML and received regular chemotherapy. After the 5th cycle chemotherapy, she achieved complete remission but developed severe muscle weakness and myalgia with dramatic increasing creatine kinase (CK)...
July 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29540846/myositis-anti-nxp2-antibodies-associated-with-severe-jdm
#4
Sarah Onuora
No abstract text is available yet for this article.
May 2018: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29532710/myositis-specific-autoantibodies-in-japanese-patients-with-juvenile-idiopathic-inflammatory-myopathies
#5
Masahiro Ueki, Ichiro Kobayashi, Shunichiro Takezaki, Yusuke Tozawa, Yuka Okura, Masafumi Yamada, Masataka Kuwana, Tadashi Ariga
OBJECTIVES: The aim of our study is to clarify the association of myositis-specific autoantibodies (MSAs) with clinical and laboratory features in Japanese patients with juvenile idiopathic inflammatory myopathies (JIIMs). METHODS: We retrospectively analyzed the frequency of MSAs and their association with clinical or laboratory findings in 25 Japanese patients with JIIMs in Hokkaido district. RESULTS: Eighteen of the 25 patients (72%) were positive for MSAs; seven with anti-melanoma differentiation associated gene (MDA) 5 (28%), five with anti-transcriptional intermediary factor (TIF)-1γ (20%), four with anti-MJ/nuclear matrix protein (NXP)-2 (16%), two with anti-Jo-1 (8%), one with anti- HMG-CoA reductase, one with anti-signal recognition peptide (SRP) antibodies (4% each), including co-existence and transition of MSAs in one patient each...
April 9, 2018: Modern Rheumatology
https://www.readbyqxmd.com/read/29474663/muscle-ischaemia-associated-with-nxp2-autoantibodies-a-severe-subtype-of-juvenile-dermatomyositis
#6
Jessie Aouizerate, Marie De Antonio, Brigitte Bader-Meunier, Christine Barnerias, Christine Bodemer, Arnaud Isapof, Pierre Quartier, Isabelle Melki, Jean-Luc Charuel, Guillaume Bassez, Isabelle Desguerre, Romain K Gherardi, François-Jérôme Authier, Cyril Gitiaux
Objectives: Myositis-specific autoantibodies (MSAs) are increasingly used to delineate distinct subgroups of JDM. The aim of our study was to explore without a priori hypotheses whether MSAs are associated with distinct clinical-pathological changes and severity in a monocentric JDM cohort. Methods: Clinical, biological and histological findings from 23 JDM patients were assessed. Twenty-six histopathological parameters were subjected to multivariate analysis. Results: Autoantibodies included anti-NXP2 (9/23), anti-TIF1γ (4/23), anti-MDA5 (2/23), no MSAs (8/23)...
May 1, 2018: Rheumatology
https://www.readbyqxmd.com/read/29178913/identification-of-multiple-cancer-associated-myositis-specific-autoantibodies-in-idiopathic-inflammatory-myopathies-a-large-longitudinal-cohort-study
#7
Hanbo Yang, Qinglin Peng, Liguo Yin, Shanshan Li, Jingli Shi, Yamei Zhang, Xin Lu, Xiaoming Shu, Sigong Zhang, Guochun Wang
BACKGROUND: Cancer is a significant complication contributing to increased mortality in idiopathic inflammatory myopathies (IIMs), and the association between IIMs and cancer has been extensively reported. Myositis-specific autoantibodies (MSAs) can help to stratify patients into more homogeneous groups and may be used as a biomarker for cancer-associated myositis. In this study, we aimed to systematically define the cancer-associated MSAs in IIMs. METHODS: Serum from 627 patients with IIMs was tested for MSAs...
November 25, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28605526/anti-nxp2-antibody-associated-extensive-subcutaneous-calcinosis-in-adult-onset-myositis
#8
Radjiv Goulabchand, Philippe Guilpain, Catherine Cyteval, Alain Le Quellec
No abstract text is available yet for this article.
October 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28198709/diagnostic-utility-of-auto-antibodies-in-inflammatory-muscle-diseases
#9
Y Allenbach, O Benveniste
To date, there are four main groups of idiopathic inflammatory myopathies (IIM): polymyositis (PM), dermatomyositis (DM), immune-mediated necrotizing myopathy (IMNM) and sporadic inclusion body myositis; based on clinical presentation and muscle pathology. Nevertheless, important phenotypical differences (either muscular and/or extra-muscular manifestations) within a group persist. In recent years, the titration of different myositis-specific (or associated) auto-antibodies as a diagnostic tool has increased...
2015: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/28045754/anti-nxp2-positive-paraneoplastic-dermatomyositis-with-histopathologic-changes-confined-to-the-acrosyringia
#10
Jose Luis Ramírez-Bellver, Elena Macías, Claudia Bernárdez, Joaquín López-Robles, Maria Del Carmen Vegas-Sánchez, Jose Luis Díaz-Recuero, Hernán Quiceno, Luis Requena
BACKGROUND: Paraneoplastic syndromes consist of a group of disorders that are not related to the extension of the primary tumor or its metastases and that might be the first manifestation of a hidden neoplasm. It is a well-known association between dermatomyositis (DM) and cancer, especially gynecological tumors in women and lung cancer in men. METHODS: We describe the case of a 67-year-old male who developed muscular weakness and pruritic skin lesions. Skin biopsies were performed and histologic findings were consistent with DM...
January 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27538058/advances-in-serological-diagnostics-of-inflammatory-myopathies
#11
REVIEW
Olivier Benveniste, Werner Stenzel, Yves Allenbach
PURPOSE OF REVIEW: Inflammatory myopathies are rare diseases. Their diagnosis criteria are historically based on their clinical phenotype (topography of the muscle weakness, presence of skin lesions and/or of extra-skin/muscle signs) and the presence of inflammatory infiltrates on muscle biopsy. However, the recent discovery of different myositis-specific antibodies (MSA) or myositis-associated antibodies (MAA) permitted to revisit these old classifications. This review covers recent findings in clinical and pathological phenotypes regarding prognosis, associated cancer and response to the treatment based on MSA/MAA categorization...
October 2016: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27533321/recent-advances-in-dermatomyositis-specific-autoantibodies
#12
REVIEW
Manabu Fujimoto, Rei Watanabe, Yosuke Ishitsuka, Naoko Okiyama
PURPOSE OF REVIEW: In dermatomyositis, disease-specific autoantibodies now cover more than 70% of patients. These autoantibodies closely correlate with distinct clinical manifestations. In the past few years, extensive evidence has been accumulated on clinical significance of dermatomyositis-specific autoantibodies including autoantibodies against melanoma differentiation antigen 5 (MDA5), transcriptional intermediary factor 1 (TIF1), nuclear matrix protein 2 (NXP2), and small ubiquitin-like modifier activating enzyme (SAE)...
November 2016: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/26906088/testing-for-myositis-specific-autoantibodies-comparison-between-line-blot-and-immunoprecipitation-assays-in-57-myositis-sera
#13
COMPARATIVE STUDY
Ilaria Cavazzana, Micaela Fredi, Angela Ceribelli, Cristina Mordenti, Fabio Ferrari, Nice Carabellese, Angela Tincani, Minoru Satoh, Franco Franceschini
OBJECTIVE: To analyze the performance of a line blot assay for the identification of autoantibodies in sera of patients affected by myositis, compared with immunoprecipitation (IP) as gold standard. METHODS: 66 sera of patients with myositis (23 polymyositis, 8 anti-synthetase syndromes, 29 dermatomyositis and 6 overlap syndromes) were tested by commercial LB (Euroimmun, Lubeck, Germany); 57 sera were analyzed also by IP of K562 cell extract radiolabeled with (35)S-methionine...
June 2016: Journal of Immunological Methods
https://www.readbyqxmd.com/read/25644067/-dermatomyositis-specific-antibodies
#14
REVIEW
L Bodoki, M Nagy-Vincze, Z Griger, K Dankó
BACKGROUND: Idiopathic inflammatory myopathies are chronic systemic autoimmune diseases characterized by symmetrical proximal muscle weakness. The clinicopathological subdivision nowadays appears to be obsolete which is why the immunoserological classification has been developed. OBJECTIVES: Dermatomyositis represents one the most important subsets of idiopathic inflammatory myopathy and dermatomyositis-specific autoantibodies play a significant role in this subset...
May 2015: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/25182203/four-dermatomyositis-specific-autoantibodies-anti-tif1%C3%AE-anti-nxp2-anti-sae-and-anti-mda5-in-adult-and-juvenile-patients-with-idiopathic-inflammatory-myopathies-in-a-hungarian-cohort
#15
REVIEW
Levente Bodoki, Melinda Nagy-Vincze, Zoltán Griger, Zoe Betteridge, Lászlóné Szöllősi, Katalin Dankó
Idiopathic inflammatory myopathies (IIMs) are chronic systemic autoimmune diseases characterised by symmetrical, proximal muscle weakness. Dermatomyositis represents one subset of IIMs, in which skin rashes are present in addition to muscle weakness. Myositis-specific antibodies can only be detected in myositis, and they are directed against specific proteins found in the cytoplasm or in the nucleus of cells. With this case-based article, we introduce the recently detected anti-TIF1γ, anti-NXP2, anti-SAE and anti-MDA5 antibodies that form various clinical groups...
December 2014: Autoimmunity Reviews
https://www.readbyqxmd.com/read/24217940/pemphigus-foliaceus-associated-with-anti-nxp2-autoantibody-positive-dermatomyositis
#16
Noriki Fujimoto, Satoru Takayama, Yasuhito Hamaguchi, Manabu Fujimoto, Toshihiro Tanaka
No abstract text is available yet for this article.
July 2014: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/22258483/anti-nxp2-autoantibodies-in-adult-patients-with-idiopathic-inflammatory-myopathies-possible-association-with-malignancy
#17
MULTICENTER STUDY
Yuki Ichimura, Takashi Matsushita, Yasuhito Hamaguchi, Kenzo Kaji, Minoru Hasegawa, Yoshinori Tanino, Yayoi Inokoshi, Kazuhiro Kawai, Takuro Kanekura, Maria Habuchi, Atsuyuki Igarashi, Ryosuke Sogame, Takashi Hashimoto, Tomohiro Koga, Ayako Nishino, Naoko Ishiguro, Naoki Sugimoto, Rui Aoki, Noriko Ando, Tetsuya Abe, Takashi Kanda, Masataka Kuwana, Kazuhiko Takehara, Manabu Fujimoto
OBJECTIVES: Myositis-specific autoantibodies (MSAs) are useful tools for identifying clinically homogeneous subsets and predicting prognosis of patients with idiopathic inflammatory myopathies (IIM) including polymyositis (PM) and dermatomyositis (DM). Recent studies have shown that anti-NXP2 antibody (Ab) is a major MSA in juvenile dermatomyositis (JDM). In this study the frequencies and clinical associations of anti-NXP2 Ab were evaluated in adult patients with IIM. METHODS: Clinical data and serum samples were collected from 507 adult Japanese patients with IIM (445 with DM and 62 with PM)...
May 2012: Annals of the Rheumatic Diseases
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