Organizing Pneumonia in A Patient Double-Positive for ANCA and Anti-GBM Antibodies: A Case Report / 中国医学科学杂志(英文版)

Both anti-glomerular basement membrane (GBM) disease and the anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) are common causes of pulmonary-renal syndrome. Organizing pneumonia (OP), a special pattern of interstitial lung disease, is extremely rare either in AAV or anti-GBM disease. We report an old woman presented with OP on a background of co-presentation with both ANCA and anti-GBM antibodies.

Compromiso pulmonar en vasculitis asociadas a anticuerpos anticitoplasma de neutrófilos / Pulmonary manifestations of anti-neutrophil cytoplasmic antibody associated vasculitis

This article reviews the pulmonary manifestations of anti-neutrophil cytoplasmic antibody associated vasculitis (AAV). Its frequency in the different phenotypes of the disease, clinical manifestations and updated therapeutic recommendations are reviewed, aiming to alert the medical community about the existence of these diseases. We pretend to stimulate a timely suspicion, diagnostic precision, and the implementation of effective therapies, to reduce the eventual sequelae derived from a diagnostic omission or an inappropriate treatment for the different clinical scenarios in which these diseases appear.

Manifestaciones pulmonares al diagnóstico de 170 pacientes con vasculitis asociadas a anticuerpos anticitoplasma de neutrófilos: cohorte retrospectiva de un centro universitario / Pulmonary manifestations at the diagnosis of 170 patients with vasculitis associated with anticytoplasmic neutrophil antibodies: retrospective cohort of a university center

INTRODUCCIÓN: Las Vasculitis Asociadas a Anticuerpos Anticitoplasma de Neutrófilos (VAA) son infrecuentes, pero de amplio espectro de presentación. Si bien el consenso de clasificación de Chapel Hill del año 2012, sigue vigente, la tendencia actual es clasificarlas de acuerdo al marcador inmunológico: anti-Proteinasa 3 (PR3) o anti-mieloperoxidasa (MPO). Las manifestaciones pulmonares clásicas son la hemorragia alveolar y los nódulos pulmonares. En los últimos 10 años se ha descrito la enfermedad pulmonar difusa (EPD). Los estudios epidemiológicos son escasos, y suelen representar en su mayoría poblaciones norteamericanas o europeas. El objetivo es describir las características del compromiso pulmonar al debut en VAA en un centro universitario. PACIENTES Y MÉTODO: De un total de 190 pacientes con diagnóstico de VAA se incluyeron 170 en seguimiento en nuestro centro. Se revisaron aspectos clínicos, demográficos, laboratorio e imagenológicos de los pacientes incluidos. RESULTADOS: De los 170 pacientes, 112 (65,88%) presentaron compromiso pulmonar. 106 (94,64%) de los pacientes fueron anticuerpos anti citoplasma de neutrófilos (ANCA) positivos; de estos, 56 (53,27%) MPO (+) y 39 (36,45%) PR-3 (+). Un tercio de los pacientes de ambos grupos presentó hemorragia alveolar. En los pacientes MPO (+) predomina la EPD (53,5%) y en PR-3 (+) los nódulos pulmonares (69,23%). Destaca la baja frecuencia de patología obstructiva asociada. CONCLUSIONES: El compromiso pulmonar en las VAA es prevalente y heterogéneo. En nuestra serie, destaca la frecuencia de EPD en VAA MPO (+), lo que releva la importancia del estudio con ANCA en paciente con diagnóstico y seguimiento por EPD.

INTRODUCTION: Antineutrophil Cytoplasmic Antibodies (ANCA) associated vasculitis (AAV) are uncommon, but of broad spectrum of presentation. Although the 2012 Chapel Hill classification consensus remains valid, the current trend is to classify them according to the immunological marker: anti-Proteinase 3 antibody (PR-3) or anti-Myeloperoxidase antibody (MPO). The classic pulmonary manifestations are alveolar hemorrhage and pulmonary nodules. Interstitial lung disease (ILD) has been described in the last 10 years. Epidemiological studies are scarce, and they usually represent mostly North American or European populations. The objective is to describe the characteristics of lung involvement upon debut in AAV in a university center. PATIENTS AND METHODS: Of a total of 190 patients diagnosed with AAV, 170 were included in follow-up at our center. Clinical, demographic, laboratory and imaging aspects of the included patients were reviewed. RESULTS: Of the 170 patients, 112 (65.88%) had lung involvement. 106 (94.64%) of the patients were ANCA (+); of these, 56 (53.27%) MPO (+) and 39 (36.45%) PR-3 (+). One third of the patients in both groups had alveolar hemorrhage. In MPO (+) patients, ILD predominates (53.5%) and in PR-3 (+) pulmonary nodules (69.23%). The low frequency of associated obstructive pathology stands out. CONCLUSIONS: Pulmonary manifestations in AAVs are frequent and heterogeneous. Locally, the association of ILD and AAV MPO (+) stands out, which highlights the importance of ANCA study in patients with diagnosis and follow-up by ILD.

Compromiso renal en vasculitis asociadas a anticuerpos anticitoplasma de neutrófilos. Recomendaciones de consenso de las Sociedades Chilenas de Nefrología y Reumatología / Renal involvement in antineutrophil cytoplasmic antibodies (ANCA) associated vasculitides. Recommendations of the Chilean Societies of Nephrology and Rheumatology

Renal involvement is a frequent complication in antineutrophil cytoplasmic antibodies (ANCA)associated vasculitides, adding morbidity and mortality, such as chronic kidney disease and the need for renal replacement therapy. With the aim of reaching a consensus on relevant issues regarding the diagnosis, treatment and follow-up of patients with these diseases, the Chilean Societies of Nephrology and Rheumatology formed a working group that, based on a critical review of the available literature and their experience, raised and answered consensually a set of questions relevant to the subject. This document includes aspects related to the clinical diagnosis, the histological characteristics, the therapeutic alternatives to induce and maintain the remission of the disease, relapse surveillance strategies and complementary therapies.

Anti-neutrophil cytoplasmic antibodies in new-onset systemic lupus erythematosus

Abstract: Background: The clinical significance of anti-neutrophil cytoplasmic antibodies in patients with new-onset systemic lupus erythematosus, especially in systemic disease accompanied by interstitial lung disease remains to be elucidated. Objectives: This study was designed to investigate the role of anti-neutrophil cytoplasmic antibodies in new-onset systemic lupus erythematosus patients. Methods: A hundred and seven patients with new-onset SLE were enrolled. Presence of anti-neutrophil cytoplasmic antibodies in the sera was assessed by indirect immunofluorescence as well as enzyme linked immunosorbent assay against proteinase-3 and myeloperoxidase. Clinical features and laboratory parameters of patients were also recorded. All patients were subjected to chest X-ray, chest high-resolution computed tomography and pulmonary function test. Results: Forty-five systemic lupus erythematosus patients (45/107, 42%) were seropositive for anti-neutrophil cytoplasmic antibodies. Compared with anti-neutrophil cytoplasmic antibodies-negative patients, the anti-neutrophil cytoplasmic antibodies-positive patients had significantly higher incidence of renal involvement, anemia, and Raynaud's phenomenon as well as decreased serum level of complement 3/complement 4 and elevated erythrocyte sedimentation rate. In addition, there was a positive correlation between serum anti-neutrophil cytoplasmic antibodies level and disease activity of systemic lupus erythematosus. Furthermore, prevalence of interstitial lung disease in the anti-neutrophil cytoplasmic antibodies -positive patients (25/45, 55.6%) was obviously higher than that in the anti-neutrophil cytoplasmic antibodies-negative patients (15/62, 24.2%). Study limitations: The sample size was limited and the criteria for screening new-onset systemic lupus erythematosus patients might produce bias. Conclusions: The level of anti-neutrophil cytoplasmic antibodies in new-onset systemic lupus erythematosus patients correlates positively with the disease activity and the prevalence of interstitial lung disease.

ANCA-positive vasculitis: Clinical implications of ANCA types and titers / Vasculite ANCA positiva: implicações clínicas dos tipos e dos títulos de ANCA

SUMMARY Introduction: Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis is an autoimmune disease that can affect multiple organs, the kidney being one of the most affected. Apart from the diagnostics value of ANCA, they have also been advocated as biomarkers of the disease activity. Recently, the genetic changes found in polyangiitis associated with serine-protease proteinase 3 (PR3)-ANCA or myeloperoxidase (MPO)-ANCA raised the possibility of immune-pathogenic and therapeutic differences. Objective: To identify differences in the number of relapses, inflammatory markers, outcomes and renal histology related to the types of ANCA. To analyze the implications of ANCA titers in prognosis. Method: A retrospective observational study in a Portuguese tertiary hospital. Results: There were no differences in the progression of renal function, histological pattern and initial treatment with regard to ANCA subtypes. As for the evaluated parameters, there were no significant differences according to the types of ANCA, except for mean CRP values within the normal range, which was 6.3±1.3 mg/L for MPO-ANCA and 12.4±10.14 mg/L for PR3-ANCA (p=0.04). We found that 66.7% of the MPO-ANCA-positive showed no relapses versus 40% in the case of PR3-ANCA-positive. There was no correlation between the ANCA titers at presentation, during remission, and in the last evaluation, and the number of relapses. Conclusion: PR3-ANCA patients have a mean CRP value within the normal range significantly higher than that of MPO-ANCA patients (p=0.04), which seems to reveal greater inflammatory activity in the first.

RESUMO Introdução: a vasculite associada aos anticorpos anticitoplasma de neutrófilos (ANCA) é uma doença autoimune que pode acometer vários órgãos, sendo o rim um dos mais afetados. Além dos ANCA serem marcadores de diagnóstico, foram também defendidos como marcadores de atividade. Recentemente as alterações genéticas encontradas entre as poliangeítes serina-protease 3 da proteinase (PR3)-ANCA ou mieloperoxidase (MPO)-ANCA levantam a possibilidade de diferenças imunopatogênicas e terapêuticas. Objetivos: identificar diferenças quanto a número de recidivas, marcadores inflamatórios, desfechos e histologia renal relativamente aos tipos de ANCA. Analisar implicações dos títulos de ANCA no prognóstico. Método: estudo retrospectivo observacional em hospital terciário português. Resultados: não se verificaram diferenças quanto à evolução da função renal, ao padrão histológico e ao tratamento inicial relativamente aos subtipos de ANCA. Nos parâmetros analíticos avaliados, não se verificaram diferenças significativas relativas aos tipos de ANCA, à exceção do valor médio de PCR no intervalo que foi de 6,3±1,3 mg/L nos MPO-ANCA e 12,4±10,14 mg/L nos PR3-ANCA (p=0,04). Verificamos que 66,7% dos MPO-ANCA positivos não apresentaram recidivas versus 40% dos PR3-ANCA positivos. Não se verificou nenhuma correlação entre os títulos de ANCA à apresentação, durante a remissão e na última avaliação com o número de recidivas. Conclusão: os indivíduos PR3-ANCA apresentaram um valor médio de PCR nos intervalos superior aos indivíduos MPO-ANCA (p=0,04), o que parece evidenciar uma maior atividade inflamatória nos primeiros.

Co-existing proteinase 3-antineutrophil cytoplasmic antibody-associated vasculitis with immunoglobulin A nephropathy

No abstract available.

Vasculitis de grandes vasos en paciente con vasculitis ANCA (+): Caso clínico / Large vessel involvement in ANCA-associated vasculitis: Report of one case

Pauci-immune glomerulonephritis in systemic vasculitides usually have anti-neuthrophil cytoplasmic antibodies (ANCA). However, vasculitides of large vessels such as Takayasu’s and giant cell (temporal) arteritis do not. Exceptionally ANCA(+) small vessel vasculitides are associated with large vessel vasculitis. It may be a coincidence or both vasculitides have a common pathogenesis. We report a 30 years old woman on hemodialysis due to a chronic glomerulonephritis ANCA(+) diagnosed nine years ago. Eight years later, she presented with an aortitis with severe stenosis of distal aorta and vasculitis of left subclavian artery. She was treated with adrenal steroids and cyclophosphamide. During the ensuing five years she has been stable and without signs of reactivation of the disease.

Vasculite associada à ANCA e leucemia linfocítica crônica: uma rara associação / ANCA associated vasculitis and chronic lymphocytic leukemia: a rare association

O presente trabalho tem por objetivo uma discussão acerca do relato de um doente que teve o diagnóstico simultâneo de duas doenças pouco frequentes, a vasculite relacionada ao anticorpo anticitoplasma de neutrófilos e a leucemia linfocítica crônica. Ambas são doenças que podem apresentar envolvimento multissistêmico e, assim, causar confusão diagnóstica. Neste caso, o doente apresentou comprometimento renal, pulmonar, hematológico e ocular, que poderiam ser secundários tanto à vasculite quanto à leucemia. Com auxílio de exames de imagem, estudos anátomopatológicos, imuno-histoquímica e imunofenotipagem concluímos tratar-se de uma associação das duas doenças. Há, na literatura, outros relatos desta associação, no entanto, com pANCA positivo; este é o primeiro relato de leucemia linfocítica crônica associada à vasculite com cANCA positivo.

The aim of the present work is to discuss the report of a patient who had simultaneous diagnosis of two rare diseases, vasculitis related to antineutrophil cytoplasmic antibodies and chronic lymphocytic leukemia. Both are diseases that may be multisystemic and thus cause diagnostic confusion. In this case, the patient had renal, pulmonary, hematological, and ocular symptoms, which could be secondary to vasculitis both as to leukemia. With the aid of imaging studies, pathological studies, immunohistochemistry and immunophenotyping, we conclude that it was a combination of the two diseases. There are other reports in literature of this association, however, with pANCA positive, this is the first report of chronic lymphocytic leukemia associated with cANCA positive vasculitis.

Fibrosis pulmonar asociada a vasculitis con anticuerpos anticitoplasmáticos positivos / Pulmonary fibrosis associated with anti-neutrophil cytoplasmic antibody-positive vasculitis

Las complicaciones pulmonares más conocidas de las vasculitis con anticuerpos anticitoplasmáticos de los neutrófilos (ANCA) positivos (VAA), son la hemorragia alveolar, los granulomas y la estenosis de la vía aérea. En los últimos años han aparecido algunos informes aislados que muestran la asociación con fibrosis pulmonar (FP), sugiriendo que ésta sería otra complicación de las VAA. En este trabajo informamos dos casos con dicha asociación describiendo sus características clínicas, tomográficas e inmunológicas. Dado que en la asociación de FP y VAA notificada en los últimos años, la FP puede ser su primera manifestación, podría ser necesaria la búsqueda de ANCA en pacientes con FP, como causa de la misma y por el posible desarrollo posterior de vasculitis.

The most frequently observed pulmonary complications of vasculitis (AAV) with anti-neutrophil cytoplasmic positive antibodies (ANCA) are alveolar hemorrhage, granulomas and airway stenosis. In recent years, some reports have been published that show the association of vasculitis with pulmonary fibrosis (PF), suggesting that it may be another complication of AAV. We report and describe here two cases with such association, and their clinical, tomographic and immunological characteristics. Given that in the association between PF and AAV, as reported in the last years, PF could be the first manifestation of AAV, the search for ANCA in patients with PF may be necessary, as a cause of it and for the possible subsequent development of vasculitis.

Renal histology in pauci-immune rapidly progressive glomerulonephritis: 8-year retrospective study.

Context: The need to perform reporting of renal biopsies of antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitides in a more uniform manner required relook at our eight-year data. Aims: To document detailed renal histopathology of pauci-immune rapidly progressive glomerulonephritis (RPGN) and also to seek any significant differences in renal histology of C-ANCA-positive, P-ANCA-positive, and ANCA-negative patients. Materials and Methods: A detailed analysis of the histopathologic features of renal biopsies of 48 patients in whom a diagnosis of pauci-immune glomerulonephritis was concluded on renal biopsy and who presented clinically as rapidly progressive renal failure was done. Statistical Analysis Used: One-way ANOVA and Pearson Chi square tests. Results: Compared with ANCA +ve patients, the ANCA -ve patients were much younger (46.85 ± 16.12 years vs 34.28±15.94 years). No significant differences were found between renal lesions of C-ANCA, P-ANCA, and ANCA-negative patients, except for diffuse tubular atrophy which was more severe and more frequently present with P-ANCA positivity (P value=0.013). Conclusions: Pauci-immune RPGN (irrespective of ANCA status) is a relatively rare disorder in patients who are undergoing the renal biopsy at our institute, constituting 2% of all renal biopsies submitted. It is mandatory to have ANCA serology status during reporting of a kidney biopsy showing pauci-immune crescentic or necrotizing glomerulonephritis. Also, if a uniform reporting strategy is followed throughout the country, the studies from this vast country will be comparable.

Immune vasculitis induced atherosclerosis / 华中科技大学学报（医学）（英德文版）

The relationship between immune vasculitis and atherosclerosis was studied. The experimental model of weanling rabbits for immune vasculitis was reproduced by intravenous injection of 10% bovine serum albumin. There were 6 groups: group A, 25 weanling rabbits with immune vasculitis subject to coronary arteriography; group B, 10 normal mature rabbits subject to coronary arteriography; group C, 10 weanling rabbits subject to coronary arteriography; group D, 8 weanling rabbits with vasculitis and cholesterol diet; group E, 8 weanling rabbits receiving single cholesterol diet; group F: 8 weanling rabbits receiving basic diet. Four weeks later, coronary arteriography was performed in groups A, B and C. The rabbits in groups D, E and F were sacrificed for the study of pathological changes in the coronary artery after 12 weeks. The results showed that the dilatation of coronary artery occurred in 6 rabbits of group A, but in groups B and C, no dilatation of coronary artery appeared. In comparison with group E, more severe atherosclerosis occurred in group D, showing the thickened plaque, fibrous sclerosis and atherosclerotic lesion. Percentage of plaques covering aortic intima, incidence of atherosclerosis of small coronary arteries and degree of stenosis of coronary arteries were significantly higher in group D than in group E (P < 0.01). No atherosclerosis changes were found in group F. It was concluded that in the acute phase, the serum immune vasculitis can induce the dilatation of coronary artery of some weanling rabbits, and aggravate the formation of atherosclerosis in rabbits fed with cholesterol diet. Immune vasculitis is a new risk factor of atherosclerosis and ischemic heart disease.