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Kivity S Gilburd B Agmon-Levin N Carrasco MG Tzafrir Y Sofer Y Mandel M Buttner T Roggenbuck D Matucci-Cerinic M Danko K Hoyos ML Shoenfeld Y 《Clinical rheumatology》2012,31(3):503-509
Autoantibodies (AAb), especially antinuclear (ANAs) and anticytoplasmatic antibodies (ACyA), are essential diagnosing markers for several autoimmune diseases. The current gold standard method for ANA detection is manual indirect immunofluorescence (IIF) on human epithelial-2 (HEp-2) cells. However, this technique is cost and time consuming, and characterized by considerable intra- and interlaboratory variability. Thus, an automated IIF-HEp-2 reader has been developed recently. In the current study, we compared the performance of the automated AAb IIF-HEp-2 interpretation to conventional detection methods. Autoantibody detection by IIF on HEp-2 cells was performed in a total of 260 sera of patients, including 34 with systemic lupus erythematosus, 111 with dermatomyositis or polymyositis, 74 with systemic sclerosis, 41 with rare AAb patterns, and 137 healthy individuals. Visual interpretation and routine immunoassays were compared with a novel automated IIF-HEp-2 system using Aklides pattern recognition algorithms. Positive AAbs were detected in 95-100% of rheumatic patients by automated interpretation, in 74-100% with manual reading, and in 64-100% by immunodot assay. Receiver operating characteristic curve analysis of fluorescent intensity revealed a high sensitivity and specificity for automated reading of AAb with an agreement ranging from 90% to 95% between manual and automated interpretation (kappa 0.554-0.69) for systemic sclerosis and myositis, respectively. This study demonstrates a good correlation between manual and automated interpretation of AAb including ANA and ACyA in patients with autoimmune diseases. Full automation of HEp-2 cell assay reading may minimize errors in ANA pattern interpretation and thus help in the standardization of ANA assessment. 相似文献
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Morphea and other scleroderma-like skin conditions are occasionally linked with exposure to chemical compounds such as silicone. We treated a 56-year-old woman with generalized severe skin induration accompanied with systemic symptoms and peripheral eosinophilia, which appeared 2.5 years after breast silicone implantation and abdominal liposuction. Blood test results and histopathological examination of her skin suggested the diagnosis of morphea overlapping with eosinophilic fasciitis. Her skin disease was presumed to be an autoimmune reaction to silicone implantation. While the removal of the implants did not improve her illness, treatment with 1 mg/kg prednisone and PUVA bath was initiated, with some improvement. This patient illustrates an example of ASIA (Autoimmune Syndrome Induced by Adjuvants), as her disease appeared following exposure to an adjuvant stimulus, with 'typical', although not well-defined, autoimmune manifestations. 相似文献
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Complications resulting from cleft lip and cleft rhinoplasty surgery are usually due to errors in surgical planning and technique. The various secondary deformities resulting from cleft lip and cleft rhinoplasty surgeries are reviewed and management options discussed. 相似文献
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Anti-citrullinated-protein-antibody-specific intravenous immunoglobulin attenuates collagen-induced arthritis in mice 下载免费PDF全文
N Svetlicky S Kivity Q Odeh O Shovman S Gertel H Amital O Gendelman A Volkov I Barshack E Bar-Meir M Blank Y Shoenfeld 《Clinical and experimental immunology》2015,182(3):241-250
Administration of intravenous immunoglobulin (IVIg) is a recognized safe and efficient immunomodulation therapy for many autoimmune diseases. Anti-idiotypic antibody binding to pathogenic autoantibodies was proposed as one of the mechanisms attributed to the protective activity of IVIg in autoimmunity. The aim of this study was to fractionate the anti-anti-citrullinated protein anti-idiotypic-antibodies (anti-ACPA) from an IVIg preparation and to test it as a treatment for collagen-induced arthritis in mice. IVIg was loaded onto an ACPA column. The eluted fraction was defined as ACPA-specific-IVIg (ACPA-sIVIg). Collagen-induced-arthritis (CIA) was induced in mice. Mice were treated weekly with ACPA-sIVIg, low-dose-IVIg, high-dose-IVIg and phosphate-buffered saline (PBS). Sera-ACPA titres, anti-collagen anitbodies and cytokine levels were analysed by enzyme-linked immunosorbent assay (ELISA); antibody-forming-cell activity by enzyme-linked imunospot (ELISPOT) assay; and expansion of regulatory T cell (Treg) population by fluorescence activated cell sorter (FACS). ACPA-sIVIg inhibited ACPA binding to citrullinated-peptides (CCP) in vitro 100 times more efficiently than the IVIg compound. ACPA-sIVIg was significantly more effective than the IVIg-preparation in attenuating the development of collagen-induced arthritis. Splenocytes from CIA mice treated with ACPA-sIVIg reduced the ACPA and anti-collagen-antibody titres, including the number of anti-collagen and ACPA antibody-forming cells. In parallel, splenocytes from ACPA-sIVIg treated mice secreted higher levels of anti-inflammatory cytokines and lower proinflammatory cytokines. The ACPA-sIVIg inhibitory potential was accompanied with expansion of the Treg population. Low-dose IVIg did not affect the humoral and cellular response in the CIA mice in comparison to the PBS-treated mice. Based on our results, IVIg may be considered as a safe compound for treating patients with rheumatoid arthritis by neutralizing pathogenic autoantibodies, reducing proinflammatory cytokines and expanding the Treg population. 相似文献
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