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Anti neutrophil cytoplasmic antibody

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https://www.readbyqxmd.com/read/28710880/an-international-survey-on-anti-neutrophil-cytoplasmic-antibodies-anca-testing-in-daily-clinical-practice
#1
Jan Damoiseaux, Ingmar Heijnen, Christel Van Campenhout, Catharina Eriksson, Nicole Fabien, Manfred Herold, Renate G van der Molen, William Egner, Dina Patel, Aresio Plaza-Lopez, Antonella Radice, Marie José Rego de Sousa, Markku Viander, Yehuda Shoenfeld
BACKGROUND: Detection of anti-neutrophil cytoplasmic antibodies (ANCA) is important for the diagnosis of the ANCA-associated vasculitides (AAV). For AAV, especially ANCA directed against myeloperoxidase (MPO) and proteinase 3 (PR3) are most relevant. ANCA with less well-defined specificities may, however, also be detected in other inflammatory and non-inflammatory conditions. METHODS: A questionnaire, initiated by the European Autoimmunity Standardisation Initiative (EASI), was used to gather information on methods and testing algorithms used for ANCA in clinical laboratories of 12 European countries (EASI survey)...
July 15, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28667835/monocytes-promote-crescent-formation-in-anti-myeloperoxidase-antibody-induced-glomerulonephritis
#2
Anthony Rousselle, Ralph Kettritz, Adrian Schreiber
Neutrophils and monocytes express anti-neutrophil cytoplasmic antibody (ANCA) antigens, and activation of these cells by ANCA is central to ANCA-associated vasculitis and necrotizing crescentic glomerulonephritis (NCGN). The importance of neutrophils is established; however, any role of monocytes is less clear. We tested the hypothesis that depletion of CCR2(+) inflammatory monocytes and their derivatives would abrogate anti-myeloperoxidase (MPO) antibody-induced NCGN in a mouse model. We used passive anti-MPO antibody transfer for NCGN induction in wild-type mice or mice expressing the CCR2 promoter-controlled diphtheria toxin receptor...
June 28, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28666565/a-novel-strategy-with-combined-assays-for-detection-of-anti-neutrophil-cytoplasmic-antibody-anca-in-clinically-anca-negative-granulomatosis-with-polyangiitis-patients
#3
Kaori Tateyama, Satoru Kodama, Kan Kishibe, Yasuaki Harabuchi, Masashi Suzuki
OBJECTIVE: Granulomatosis with polyangiitis (GPA) that is localized to the upper airway presents a diagnostic challenge because of a tendency towards anti-neutrophil cytoplasmic antibody (ANCA)-negativity. The purpose of this study was to investigate whether positivity of ANCA detection might be elicited with combined use of enzyme-linked immunosorbent assay (ELISA) kits. METHODS: Twenty-nine serum samples obtained from GPA patients were used in this study. In addition to routine biochemical investigation for ANCA, tests for detecting PR3-, MPO-ANCAs, and minor ANCAs were performed with commercially available ELISA kits...
June 27, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28661185/the-value-of-serum-antibodies-in-differentiating-inflammatory-bowel-disease-predicting-disease-activity-and-disease-course-in-the-newly-diagnosed-patient
#4
Carolijn Smids, Carmen S Horjus Talabur Horje, Marcel J M Groenen, Elly H M van Koolwijk, Peter J Wahab, Ellen G van Lochem
BACKGROUND: Data on serum antibodies in untreated adult inflammatory bowel disease (IBD) patients at diagnosis are scarcely available, and results on the stability of antibody presence over time are inconsistent. Our aim was to investigate antibodies in newly diagnosed, untreated IBD patients in relation to disease phenotype and course. Furthermore, we analyzed antibody presence over time. METHODS: Baseline anti-Saccharomyces cerevisiae antibodies (ASCA), anti-chitobioside carbohydrate antibodies (ACCA), anti-laminaribioside carbohydrate antibodies (ALCA) and anti-mannobioside carbohydrate antibodies (AMCA) were measured with enzyme-linked immunosorbent assays and perinuclear anti-neutrophilic cytoplasmic antibodies (pANCA) was measured by indirect immunofluorescence in serum of 120 untreated IBD patients at diagnosis and 19 healthy controls...
June 29, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28641391/a-multicentre-study-to-improve-clinical-interpretation-of-proteinase-3-and-myeloperoxidase-anti-neutrophil-cytoplasmic-antibodies
#5
Xavier Bossuyt, Niels Rasmussen, Pieter van Paassen, Bernard Hellmich, Bo Baslund, Pieter Vermeersch, Daniel Blockmans, Jan-Willem Cohen Tervaert, Elena Csernok, Jan Damoiseaux
No abstract text is available yet for this article.
June 20, 2017: Rheumatology
https://www.readbyqxmd.com/read/28612242/histopathologic-classification-of-anti-neutrophil-cytoplasmic-antibody-associated-glomerulonephritis-achievements-limitations-and-perspectives
#6
Andrea Hinojosa-Azaola, Ariadna Jiménez-González
Clinical and histological factors have been identified as predictors of early and late renal outcome in ANCA-associated vasculitides (AAV). The presence and severity of kidney involvement at diagnosis are associated with poor prognosis in both patient and renal survival. Histologic findings remain the gold standard for diagnosing patients with AAV. In order to quantify the extent of the morphological parameters in the renal biopsies and to identify the histopathological lesions that predict renal outcome, several scoring systems have been proposed to systematically assess kidney biopsies in AAV...
June 14, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28592297/negative-anti-neutrophil-cytoplasm-antibody-at-switch-to-maintenance-therapy-is-associated-with-a-reduced-risk-of-relapse
#7
Matthew David Morgan, Matthew Szeto, Michael Walsh, David Jayne, Kerstin Westman, Niels Rasmussen, Thomas F Hiemstra, Oliver Flossmann, Annelies Berden, Peter Höglund, Lorraine Harper
BACKGROUND: Relapse of disease is frequent in anti-neutrophil cytoplasm antibody (ANCA)-associated vasculitis (AAV). It is unclear whether persistent ANCA when starting maintenance therapy increases the risk of relapse. We examined the association between ANCA status and relapse in two randomised controlled trials. METHODS: ANCA-positive patients in two trials, CYCLOPS and IMPROVE, were switched from cyclophosphamide to maintenance therapy after achieving clinical remission...
June 7, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28592042/-the-significances-of-peripheral-neutrophils-cd-55-and-myeloperoxidase-expression-in-patients-with-myeloperoxidase-specific-anti-neutrophil-cytoplasmic-antibody-associated-vasculitis
#8
X L Zhou, M J Zheng, Z W Shuai, L Zhang, M M Zhang, S Y Chen
Objective: To investigate the expression of CD(55) and myeloperoxidase (MPO) on neutrophils in patients with MPO-specific anti-neutrophil cytoplasmic antibody associated vasculitis(MPO-AAV), and analyze the relationship between the expression and clinical manifestation. Methods: Forty untreated patients with active MPO-AAV (patient group) and 30 healthy volunteers (control group) were enrolled in this study. The CD(55) on neutrophils and both membrane and cytoplasmic MPO were detected by flow cytometry. Serum fragment-from the activated complement factor B(Ba) and MPO were measured by ELISA...
June 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28591497/-anca-associated-vasculitides-at-mexico-city-s-metropolitan-eastern-area
#9
Hernando Cervera-Castillo, Francisco Blanco-Favela, Yolanda Floriberta Silva-López, Guadalupe Eugenia Paredez-Rivera, Verónica Torres-Caballero
BACKGROUND: The anti-neutrophil cytoplasmic antibody-associated (ANCA) vasculitides includes granulomatosis with polyangiitis (Wegener's) (GPW), Chrug-Strauss syndrome (CSS) and microscopic polyangiitis (MPA). Since it has low incidence in our field, there are a few published papers. The aim of this study was to report the clinical characteristics, activity and damage of these vasculitides in Mexico City's metropolitan eastern area. METHODS: We studied 28 cases with ANCA-associated vasculitis in the aforementioned area...
July 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28588684/successful-treatment-of-granulomatosis-with-polyangiitis-with-hydropneumothorax-using-corticosteroids-and-immunosuppressant
#10
Xu-Hua Shi, Yong-Feng Zhang, Yue-Wu Lu
Pneumothorax and pleural effusion is a rare and serious complication of granulomatosis with polyangiitis (GPA). The present study reported a case with a history of sinusitis for 20 years, dry cough for three years and exacerbated purulent nasal discharge and recurrent skin ulcers for two years. The patient experienced sudden difficulty in breathing two months prior to presentation. Lung computed tomography (CT) showed multiple bilateral lung nodules and cavitary nodules as well as right hydropneumothorax. Paranasal sinus CT showed soft tissue infiltration...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28587670/high-mobility-group-box-1-contributes-to-anti-myeloperoxidase-antibody-induced-glomerular-endothelial-cell-injury-through-a-moesin-dependent-route
#11
Hui Deng, Chen Wang, Dong-Yuan Chang, Nan Hu, Min Chen, Ming-Hui Zhao
BACKGROUND: Our previous study found that circulating and urinary levels of high mobility group box-1 (HMGB1) were closely associated with disease activity in patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Moreover, HMGB1 participates in ANCA-induced neutrophil activation. Cross-reactivity between moesin and anti-myeloperoxidase (MPO) antibody has been reported in both human and mouse. The current study investigated whether HMGB1 participated in MPO-ANCA-induced glomerular endothelial cell (GEnC) injury, which is one of the most important aspects in the pathogenesis of AAV...
June 6, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28578472/cutaneous-manifestations-of-anca-associated-small-vessels-vasculitis
#12
REVIEW
Marzano Angelo Valerio, Raimondo Maria Gabriella, Berti Emilio, Meroni Pier Luigi, Ingegnoli Francesca
Skin lesions are frequent manifestations of underlying systemic conditions, including systemic autoimmune vasculitis. In particular, anti-neutrophil cytoplasmic antibodies (ANCA) are associated with distinct forms of vasculitis characterized by inflammatory cell infiltration of the walls of small and medium-sized vessels leading to vascular destruction and tissue necrosis. ANCA-associated vasculitis is rare and systemic diseases, which can be classified based on different distribution of vascular inflammation and presence or absence of granulomatosis and asthma...
June 3, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28569178/prediction-of-response-to-remission-induction-therapy-by-gene-expression-profiling-of-peripheral-blood-in-japanese-patients-with-microscopic-polyangiitis
#13
Akihiro Ishizu, Utano Tomaru, Sakiko Masuda, Ken-Ei Sada, Koichi Amano, Masayoshi Harigai, Yasushi Kawaguchi, Yoshihiro Arimura, Kunihiro Yamagata, Shoichi Ozaki, Hiroaki Dobashi, Sakae Homma, Yasunori Okada, Hitoshi Sugiyama, Joichi Usui, Naotake Tsuboi, Seiichi Matsuo, Hirofumi Makino
BACKGROUND: Microscopic polyangiitis (MPA), which is classified as an anti-neutrophil cytoplasmic antibody (ANCA)-associated small vessel vasculitis, is one of the most frequent primary vasculitides in Japan. We earlier nominated 16 genes (IRF7, IFIT1, IFIT5, OASL, CLC, GBP-1, PSMB9, HERC5, CCR1, CD36, MS4A4A, BIRC4BP, PLSCR1, DEFA1/DEFA3, DEFA4, and COL9A2) as predictors of response to remission induction therapy against MPA. The aim of this study is to determine the accuracy of prediction using these 16 predictors...
May 31, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28559644/severe-microscopic-polyangiitis-with-unilateral-vocal-cord-paralysis-as-initial-manifestation
#14
Luis Felipe Flores-Suárez, Marco Antonio Alba, Gabriel Tona
CASE DESCRIPTION: A 16 year-old female who presented with initial ear, nose and throat manifestations who later progressed to severe renal disease, requiring hemodialysis after 11 months of unique laryngeal involvement. CLINICAL FINDINGS: Unilateral vocal cord paralysis without other symptoms or signs, but with positive perinuclear anti-neutrophil cytoplasmic antibodies (ANCA) and anti-myeloperoxidase autoantibodies, followed an unfavorable course months later with rapidly progressive glomerulonephritis...
March 30, 2017: Colombia Médica: CM
https://www.readbyqxmd.com/read/28554749/significance-of-m2-macrophages-in-glomerulonephritis-with-crescents
#15
Jun Li, Ya-Fen Yu, Chang-Hua Liu, Cui-Mei Wang
OBJECTIVES: CD163 and CD206, markers of M2 macrophages, possesses anti-inflammatory properties. This study aims to investigate the clinicopathologic significance of M2 macrophages in patients of glomerulonephritis with crescents. METHODS: Renal tissue samples from patients of glomerulonephritis with more than 30% cell or cell-fibrous crescents, including lupus nephritis (LN, n=14), anti-neutrophil cytoplasmic antibody-associated vasculitis (AAV, n=14), IgA nephropathy(IgAN) (n=11), Henoch Schonlein purpura glomerulonephritis(HSPGN)(n=8)were included in this study...
April 20, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28552872/mononeuritis-multiplex-in-a-patient-with-cutaneous-arteritis-diagnosed-by-skin-biopsy
#16
Kenji Isahaya, Makoto Shiraishi, Keita Tanaka, Rie Sasaki, Tamio Kawakami, Yasuhiro Hasegawa
A 55-year-old man was admitted with paralysis of the left lower leg. He had purpura in the left lower extremity for three years, left calf pain for two years, and dysesthesia in the left plantar region and first toe for one year. A physical examination revealed livedo reticularis on the left leg and mononeuritis multiplex was diagnosed in the bilateral tibial and left peroneal nerve area. Anti-neutrophil cytoplasmic antibody was negative. A nerve conduction study showed decreased amplitude of compound muscle-action potential in the bilateral tibial and the left peroneal nerve, sensory nerve action potential in the bilateral sural nerve...
May 26, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28550388/antibodies-against-linear-epitopes-on-goodpasture-autoantigen-in-patients-with-anti-neutrophil-cytoplasmic-antibody-associated-vasculitis
#17
Xiao-Yu Jia, Jun-Tao Yu, Shui-Yi Hu, Jian-Nan Li, Miao Wang, Chen Wang, Min Chen, Zhao Cui, Ming-Hui Zhao
In a substantial number of patients with crescentic glomerulonephritis, both anti-glomerular basement membrane (GBM) antibodies and anti-neutrophil cytoplasmic antibodies (ANCA) are detected simultaneously. ANCA is presumed to be the initial event but the mechanism is unknown. In the present study, we investigated the antibodies against linear epitopes on Goodpasture autoantigen in sera from patients with ANCA-associated vasculitis, aiming to reveal the mechanisms of the coexistence of the two kinds of autoantibodies...
May 26, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28547648/clinical-and-phenotypic-differences-in-inflammatory-bowel-disease-among-arab-and-jewish-children-in-israel
#18
Firas Rinawi, Amit Assa, Husam Bashir, Sarit Peleg, Raanan Shamir
BACKGROUND: Data on inflammatory bowel disease (IBD) phenotypes among the Arab population in Israel or in the neighboring Arab countries is scarce. AIM: We aimed to assess differences in disease phenotype among Arab and Jewish children living in Israel. METHODS: We performed a retrospective chart review of pediatric IBD cases, which were diagnosed at the Schneider Children's Medical Center and Ha'Emek Medical Center in Israel between 2000 and 2014...
August 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28546501/proteinase-3-the-odd-one-out-that-became-an-autoantigen
#19
REVIEW
Katherine R Martin, Véronique Witko-Sarsat
Neutrophils are critical in the defense against bacterial and fungal pathogens, and they also modulate the inflammatory process. The areas where neutrophils are studied have expanded from the restricted field of antibacterial defense to the modulation of inflammation and finally, to fine-tuning immune responses. As a result, recent studies have shown that neutrophils are implicated in several systemic autoimmune diseases, although exactly how neutrophils contribute to these diseases and the molecular mechanisms responsible are still under investigation...
May 25, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28546260/randomised-controlled-trial-of-prolonged-treatment-in-the-remission-phase-of-anca-associated-vasculitis
#20
Alexandre Karras, Christian Pagnoux, Marion Haubitz, Kirsten de Groot, Xavier Puechal, Jan Willem Cohen Tervaert, Mårten Segelmark, Loic Guillevin, David Jayne
OBJECTIVES: A prospective randomised trial to compare two different durations of maintenance immunosuppressive therapy for the prevention of relapse in anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV). METHODS: Patients with AAV were recruited 18-24 months after diagnosis if they were in stable remission after cyclophosphamide/prednisolone-based induction followed by azathioprine/prednisolone maintenance therapy. They were randomised (1:1) to receive continued azathioprine/prednisolone to 48 months from diagnosis (continuation group) or to withdraw azathioprine/prednisolone by 24 months (withdrawal group)...
May 25, 2017: Annals of the Rheumatic Diseases
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