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Zhang P, Yan SJ, Hu J, Liu HP, Xia W, Yang M, Kuang QH, Shi KL, Fu MZ, Gao CL, Xia ZK. Clinical outcomes and clinico-pathological correlations in children with MPO-ANCA-associated glomerulonephritis showing renal arteritis. J Investig Med 2024; 72:511-521. [PMID: 38594222 DOI: 10.1177/10815589241248073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The aim of this study was to evaluate the clinical features, pathological characteristics, and prognosis in myeloperoxidase (MPO)-antineutrophil cytoplasmic antibodies (ANCA)-associated glomerulonephritis (AAGN) with renal arteritis. The study involved 97 children from five pediatric clinical centers with MPO-AAGN who exhibited distinct clinical features. The patients were divided into AAGN-A+ and AAGN-A-, based on the presence or absence of arteritis, and the disparities in clinical, histopathological characteristics, and prognosis between the two groups was evaluated. In contrast to the AAGN-A- group, the children in the AAGN-A+ group exhibited more pronounced clinical symptoms and renal pathological injury. Arteritis positively moderately correlated with the serum creatinine, interleukin-6, urinary neutrophil gelatinase-associated lipocalin, negatively moderately correlated with serum complement C3. The renal survival rate in the AAGN-A+ group was significantly poorer than AAGN-A- group (χ2 = 4.278, p = 0.039). Arteritis showed a good predictive value for end-stage kidney disease (ESKD), and C3 deposition, ANCA renal risk score and arteritis were independent risk factors for the development of ESKD in children with MPO-AAGN. Arteritis is a significant pathological change observed in children with MPO-AAGN, and the formation of arteritis may be related to the inflammatory response and activation of the complement system.
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Affiliation(s)
- Pei Zhang
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Shi-Jun Yan
- Department of Pediatrics, Qinhuai Medical District, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Jian Hu
- Department of Pediatrics, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Hai-Peng Liu
- Department of Emergency, Xuzhou Children's Hospital, Affiliated to Xuzhou Medical University, Xuzhou, China
| | - Wei Xia
- Department of Pediatric Nephrology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Meng Yang
- Institute of Literature in Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qian-Huining Kuang
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Kai-Li Shi
- Department of Pediatrics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Meng-Zhen Fu
- Department of Pediatrics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Chun-Lin Gao
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Zheng-Kun Xia
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
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Banerjee S, Rose E, Panicker S, Dugan J, Khalidi N, Koening CL, Langford CA, Monach PA, Pagnoux C, McAlear CA, Merkel PA. Signal Regulatory Protein α Expression in Systemic Vasculitis. ACR Open Rheumatol 2024. [PMID: 39010674 DOI: 10.1002/acr2.11716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 07/17/2024] Open
Abstract
OBJECTIVE Signal regulatory protein α (SIRPα) is found primarily on myeloid cells, including macrophages and neutrophils; binds to CD47; and regulates phagocytosis, antigen presentation, cellular fusion, cell proliferation, and migration. Therefore, SIRPα may be involved in the pathogenesis of autoimmune diseases, including systemic vasculitis. This study aimed to assess SIRPα expression in tissue samples from patients with vasculitis. METHODS Immunohistochemical staining for SIRPα was performed on temporal artery (TA), kidney, and lung biopsy samples from patients with giant cell arteritis (GCA), patients with microscopic polyangiitis (MPA), patients with granulomatosis with polyangiitis (GPA), and patients without vasculitis. A score of SIRPα+ expression was calculated, derived from the percentages of monocytes, macrophages, and dendritic cells and neutrophils with different staining intensities in affected tissues. RESULTS A total of 46 samples from patients with different vasculitides (GCA, MPA, and GPA) were included in the study. Tissue samples included TA samples from 15 patients with GCA; kidney samples from 11 and 9 patients with GPA and MPA, respectively; and lung samples from 11 patients with GPA. Most tissue samples from patients with active vasculitis (15 of 15 TA samples, 17 of 20 kidney samples, and 9 of 11 lung samples) showed SIRPα staining. SIRPα staining intensity was less in kidney samples compared to TA and lung samples. CONCLUSION This study demonstrates high-level expression of SIRPα in macrophages and monocytes in affected tissue in systemic vasculitis. These findings provide a foundation for further studies exploring the role of the SIRPα-CD47 pathway in the pathogenesis of systemic vasculitis and the potential for the blockade of SIRPα and/or the depletion of SIRPα+ cells as treatment of systemic vasculitis.
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Affiliation(s)
| | - Eileen Rose
- Electra Therapeutics, Inc, South San Francisco, California
| | | | | | - Nader Khalidi
- McMaster University and St. Joseph's Hospital, Hamilton, Ontario, Canada
| | | | | | | | - Christian Pagnoux
- University of Toronto and Mount Sinai Hospital, Toronto, Ontario, Canada
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Yu W, Yan W, Yi J, Cheng L, Luo P, Sun J, Gou S, Fu P. Application of Diffusion Kurtosis Imaging and Blood Oxygen Level-Dependent Magnetic Resonance Imaging in Kidney Injury Associated with ANCA-Associated Vasculitis. Tomography 2024; 10:970-982. [PMID: 39058045 PMCID: PMC11280752 DOI: 10.3390/tomography10070073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
OBJECTIVE Functional magnetic resonance imaging (fMRI) has been applied to assess the microstructure of the kidney. However, it is not clear whether fMRI could be used in the field of kidney injury in patients with Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). METHODS This study included 20 patients with AAV. Diffusion kurtosis imaging (DKI) and blood oxygen level-dependent (BOLD) scanning of the kidneys were performed in AAV patients and healthy controls. The mean kurtosis (MK), mean diffusivity (MD), and fractional anisotropy (FA) parameters of DKI, the R2* parameter of BOLD, and clinical data were further analyzed. RESULTS In AAV patients, the cortex exhibited lower MD but higher R2* values compared to the healthy controls. Medullary MK values were elevated in AAV patients. Renal medullary MK values showed a positive correlation with serum creatinine levels and negative correlations with hemoglobin levels and estimated glomerular filtration rate. To assess renal injury in AAV patients, AUC values for MK, MD, FA, and R2* in the cortex were 0.66, 0.67, 0.57, and 0.55, respectively, and those in the medulla were 0.81, 0.77, 0.61, and 0.53, respectively. CONCLUSIONS Significant differences in DKI and BOLD MRI parameters were observed between AAV patients with kidney injuries and the healthy controls. The medullary MK value in DKI may be a noninvasive marker for assessing the severity of kidney injury in AAV patients.
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Affiliation(s)
- Wenhui Yu
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.Y.); (L.C.); (P.L.); (P.F.)
| | - Weijie Yan
- Division of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.S.)
| | - Jing Yi
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.Y.); (L.C.); (P.L.); (P.F.)
- Division of Nephrology, West China Airport Hospital of Sichuan University, Chengdu 610200, China
| | - Lu Cheng
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.Y.); (L.C.); (P.L.); (P.F.)
| | - Peiyi Luo
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.Y.); (L.C.); (P.L.); (P.F.)
| | - Jiayu Sun
- Division of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.S.)
| | - Shenju Gou
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.Y.); (L.C.); (P.L.); (P.F.)
| | - Ping Fu
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, China; (W.Y.); (J.Y.); (L.C.); (P.L.); (P.F.)
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Ueda Y, Nakazawa D, Nishio S, Shiratori-Aso S, Kudo T, Miyoshi-Harashima A, Watanabe-Kusunoki K, Hattanda F, Iwasaki S, Tsuji T, Tomaru U, Aratani Y, Yamamoto M, Ishizu A, Atsumi T. Transcription factor Nrf2 activation regulates NETosis, endothelial injury, and kidney disease in myeloperoxidase-positive antineutrophil cytoplasmic antibody-associated vasculitis. Kidney Int 2024; 105:1291-1305. [PMID: 38537677 DOI: 10.1016/j.kint.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 02/17/2024] [Accepted: 03/04/2024] [Indexed: 04/17/2024]
Abstract
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a systemic autoimmune disease pathologically characterized by vascular necrosis with inflammation. During AAV development, activated neutrophils produce reactive oxygen species (ROS), leading to the aberrant formation of neutrophil extracellular traps (NETs) via NETosis and subsequent fibrinoid vascular necrosis. Nuclear factor-erythroid 2-related factor 2 (Nrf2) functions as an intracellular defense system to counteract oxidative stress by providing antioxidant properties. Herein, we explored the role of Nrf2 in the pathogenesis of AAV. The role and mechanism of Nrf2 in ANCA-stimulated neutrophils and subsequent endothelial injury were evaluated in vitro using Nrf2 genetic deletion and Nrf2 activator treatment. In corresponding in vivo studies, the role of Nrf2 in ANCA-transfer AAV and spontaneous AAV murine models was examined. Pharmacological activation of Nrf2 in vitro suppressed ANCA-induced NET formation via the inhibition of ROS. In contrast, NET formation was enhanced in Nrf2-deficient neutrophils. Furthermore, Nrf2 activation protected endothelial cells from ANC-induced NETs-mediated injury. In vivo, Nrf2 activation ameliorated glomerulonephritis in two AAV models by upregulating antioxidants and inhibiting ROS-mediated NETs. Furthermore, Nrf2 activation restrained the expansion of splenic immune cells, including T lymphocytes and limited the infiltration of Th17 cells into the kidney. In contrast, Nrf2 genetic deficiency exacerbated vasculitis in a spontaneous AAV model. Thus, the pathophysiological process in AAV may be downregulated by Nrf2 activation, potentially leading to a new therapeutic strategy by regulating NETosis.
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Affiliation(s)
- Yusho Ueda
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Daigo Nakazawa
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| | - Saori Nishio
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Satoka Shiratori-Aso
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takashi Kudo
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Atsuko Miyoshi-Harashima
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kanako Watanabe-Kusunoki
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Fumihiko Hattanda
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Sari Iwasaki
- Department of Pathology, Sapporo City General Hospital, Sapporo, Japan
| | - Takahiro Tsuji
- Department of Pathology, Sapporo City General Hospital, Sapporo, Japan
| | - Utano Tomaru
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - Yasuaki Aratani
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Japan
| | - Mamiko Yamamoto
- Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Akihiro Ishizu
- Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Tatsuya Atsumi
- Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Arnold S, Kitching AR, Witko-Sarsat V, Wiech T, Specks U, Klapa S, Comdühr S, Stähle A, Müller A, Lamprecht P. Myeloperoxidase-specific antineutrophil cytoplasmic antibody-associated vasculitis. THE LANCET. RHEUMATOLOGY 2024; 6:e300-e313. [PMID: 38574743 DOI: 10.1016/s2665-9913(24)00025-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 04/06/2024]
Abstract
Myeloperoxidase (MPO)-specific antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (MPO-ANCA-associated vasculitis) is one of two major ANCA-associated vasculitis variants characterised by systemic necrotising vasculitis with few or no immune deposits. MPO-ANCA-associated vasculitis predominantly affects small blood vessels and, in contrast to its counterpart proteinase 3-ANCA-associated vasculitis, is generally not associated with granulomatous inflammation. The kidneys and lungs are the most commonly affected organs. The pathogenesis of MPO-ANCA-associated vasculitis is characterised by loss of tolerance to the neutrophil enzyme MPO. This loss of tolerance leads to a chronic immunopathological response where neutrophils become both the target and effector of autoimmunity. MPO-ANCA drives neutrophil activation, leading in turn to tissue and organ damage. Clinical trials have improved the therapeutic approach to MPO-ANCA-associated vasculitis. However, there remains substantial unmet need regarding relapse frequency, toxicity of current treatment, and long-term morbidity. In this Series paper, we present the current state of research regarding pathogenesis, diagnosis, and treatment of MPO-ANCA-associated vasculitis.
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Affiliation(s)
- Sabrina Arnold
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - A Richard Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia; Departments of Nephrology and Pediatric Nephrology, Monash Health, Clayton, VIC, Australia
| | - Veronique Witko-Sarsat
- INSERM U1016, Institut Cochin, CNRS UMR8104, Université Paris Cité et Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Thorsten Wiech
- Section of Nephropathology, Institute of Pathology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Ulrich Specks
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Sebastian Klapa
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - Sara Comdühr
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - Anja Stähle
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - Antje Müller
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - Peter Lamprecht
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany.
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Sharma P, Zonozi R, Geetha D. ANCA-Associated Vasculitis. ADVANCES IN KIDNEY DISEASE AND HEALTH 2024; 31:194-205. [PMID: 39004459 DOI: 10.1053/j.akdh.2024.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 04/19/2024] [Accepted: 04/24/2024] [Indexed: 07/16/2024]
Abstract
ANCA-associated vasculitis (AAV) is a necrotizing, small-to-medium vessel vasculitis associated with significant morbidity and mortality. AAV is a systemic autoimmune disease affecting kidneys, eyes, sinuses, peripheral nerves, skin, and upper and lower respiratory tracts. AAV tends to present in characteristic phenotypes categorized clinically as granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA), and eosinophilic GPA (EGPA). Kidney involvement is a common feature of AAV, and has important implications on disease prognosis and management. Existing therapies have been refined and improvements in our understanding of the pathophysiology of AAV has led to approval of novel therapies. In this review, we provide an overview of epidemiology, disease mechanisms, clinical presentation and review therapeutic strategies for induction and maintenance of remission.
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Affiliation(s)
- Purva Sharma
- Division of Kidney Disease and Hypertension, Northwell Health, The Glomerular Disease Center at Northwell Health.
| | - Reza Zonozi
- Nephrology Associates of Northern Virginia, Fairfax, VA; Inova Fairfax Hospital, Falls Church, VA
| | - Duvuru Geetha
- Division of Nephrology, Johns Hopkins University School of Medicine
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7
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Prskalo L, Skopnik CM, Goerlich N, Freund P, Wagner L, Grothgar E, Mirkheshti P, Klocke J, Sonnemann J, Metzke D, Schneider U, Hiepe F, Eckardt KU, Salama AD, Bieringer M, Schreiber A, Enghard P. Urinary CD4 + T Cells Predict Renal Relapse in ANCA-Associated Vasculitis. J Am Soc Nephrol 2024; 35:483-494. [PMID: 38231590 PMCID: PMC11000730 DOI: 10.1681/asn.0000000000000311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 01/04/2024] [Indexed: 01/18/2024] Open
Abstract
SIGNIFICANCE STATEMENT Early identification of patients at risk of renal flares in ANCA vasculitis is crucial. However, current clinical parameters have limitations in predicting renal relapse accurately. This study investigated the use of urinary CD4 + T lymphocytes as a predictive biomarker for renal flares in ANCA vasculitis. This study, including urine samples from 102 patients, found that the presence of urinary CD4 + T cells was a robust predictor of renal relapse within a 6-month time frame, with a sensitivity of 60% and a specificity of 97.8%. The diagnostic accuracy of urinary CD4 + T cells exceeded that of ANCA titers, proteinuria, and hematuria. Monitoring urinary CD4 + T lymphocytes could help assess the risk of future renal relapse, enabling early preventive measures and tailored treatment strategies. BACKGROUND In ANCA-associated vasculitis, there is a lack of biomarkers for predicting renal relapse. Urinary T cells have been shown to differentiate active GN from remission in ANCA-associated vasculitis, but their predictive value for renal flares remains unknown. METHODS The PRE-FLARED study was a prospective multicenter biomarker study including 102 individuals with ANCA-associated vasculitis in remission aimed to predict renal relapse by quantifying urinary CD4 + T-cell subsets using flow cytometry at baseline and monitoring clinical outcomes over a 6-month follow-up. RESULTS Among the participants, ten experienced renal relapses, two had non-renal flares, and 90 remained in stable remission. The median baseline urinary CD4 + T-cell count was significantly higher in patients who relapsed compared with those in remission. Receiver operating characteristic curve analysis of urinary CD4 + T-cell counts showed an area under the curve value of 0.88 for predicting renal flares, outperforming ANCA titers, hematuria, and proteinuria. Using a cutoff of 490 CD4 + T cells per 100 ml urine, the sensitivity and specificity in identifying patients with future renal flares were 60% and 97.8%, respectively. In a post hoc analysis, combining urinary CD4 + T-cell counts with proteinase-3 ANCA levels suggested improved predictive performance in the PR3 + subgroup. In addition, the number of urinary CD4 + T cells showed a limited correlation with a decline in GFR and an increase in proteinuria over the follow-up period. CONCLUSIONS This study concluded that urinary CD4 + T-cell counts could identify patients with ANCA-associated vasculitis at a substantial risk of renal relapse within 6 months. Combining these counts with ANCA levels further improved the prediction of relapse. CLINICAL TRIAL REGISTRY NAME AND REGISTRATION NUMBER Urinary T Lymphocytes Predict Renal Flares in Patients With Inactive ANCA-associated Glomerulonephritis (PRE-FLARED), NCT04428398 .
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Affiliation(s)
- Luka Prskalo
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Christopher M. Skopnik
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Nina Goerlich
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Deutsches Rheuma-Forschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany
| | - Paul Freund
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Leonie Wagner
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Emil Grothgar
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Pouneh Mirkheshti
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jan Klocke
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Deutsches Rheuma-Forschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany
| | - Janis Sonnemann
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Diana Metzke
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Deutsches Rheuma-Forschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany
| | - Udo Schneider
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Falk Hiepe
- Deutsches Rheuma-Forschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Alan D. Salama
- University College London Department of Renal Medicine, Royal Free Hospital, London, United Kingdom
| | - Markus Bieringer
- Department of Nephrology, Helios Klinikum Berlin-Buch, Berlin, Germany
| | - Adrian Schreiber
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp Enghard
- Department of Nephrology and Medical Intensive Care, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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Tan C, Perara J, Kumar P. A unique case of indolent microscopic polyangiitis in an elderly gentleman: a case report and brief review. Arch Clin Cases 2023; 10:205-209. [PMID: 38155998 PMCID: PMC10754038 DOI: 10.22551/2023.41.1004.10276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023] Open
Abstract
Antineutrophil cytoplasmic autoantibody associated vasculitides has 3 different types: Granulomatosis with polyangiitis, eosinophilic granulomatosis and polyangiitis and microscopic polyangiitis. These vasculitides manifest differently based on which area of small and medium size vessels in our bodies that it affects. In this case report, we discuss a unique case of microscopic polyangiitis diagnosed in a 75-year-old male who was relatively asymptomatic i.e. indolent, apart from nodules present in the lung with the use of the diagnostic criteria outlined by 2022 American College of Rheumatology and European Alliance of Associations for Rheumatology. In addition, we reviewed briefly about vasculitis, its epidemiology and the workup of microscopic polyangiitis.
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Affiliation(s)
- Clement Tan
- Department of General Medicine/Respiratory Medicine, Mackay Base Hospital, Mackay, Queensland, Australia
| | - Jithmy Perara
- Department of General Medicine/Respiratory Medicine, Mackay Base Hospital, Mackay, Queensland, Australia
| | - Pranav Kumar
- Department of General Medicine/Respiratory Medicine, Mackay Base Hospital, Mackay, Queensland, Australia
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9
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Wang J, Li R, Zhou W, Lin Y, Wang X, Ye S, Lu L, Zhang M, Chen S. Clinical phenotypes and prognoses of microscopic polyangiitis based on kidney biopsies. Arthritis Res Ther 2023; 25:239. [PMID: 38062524 PMCID: PMC10702060 DOI: 10.1186/s13075-023-03218-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND To classify the different clinical phenotypes and compare the distinct prognoses of microscopic polyangiitis (MPA). METHODS A retrospective analysis of 436 patients with anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV) from 2015 to 2022 was conducted in our center, of which 90 patients were diagnosed with MPA and underwent renal biopsy. RESULTS Among the 90 MPA patients, 63% were female, and the median age at onset was 63 years (25th-75th percentile: 58-68). The median follow-up time was 26 months (25th-75th percentile: 10-53). We identified four subtypes: renal impairment type (cluster 1, 39%), pure type (cluster 2, 22%), systemic inflammation type (cluster 3, 26%), and rapid progress type (cluster 4, 13%). Cluster 1, characterized by renal dysfunction at onset (80%), demonstrated poor prognoses with only 26% achieved complete remission (CR), 11% dying, and 19% developing renal failure. In contrast, patients in cluster 2, exclusively female, most had only kidney involvement showed the best prognoses with 55% achieving CR and none experiencing death or renal failure within 10 years. Cluster 3 mostly consisted of males; high fever and C-reactive protein levels were the primary characteristics. These cases exhibited moderate prognoses with 53% achieving CR, 9% dying, and 4% developing renal failure. Finally, patients in cluster 4, which was characterized by rapidly progressive glomerulonephritis, had the worst prognoses, with none achieving CR, 8% dying, and 75% developing renal failure despite aggressive treatment. CONCLUSIONS MPA is classified into four subtypes with distinct clinical manifestations and prognoses.
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Affiliation(s)
- Juan Wang
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui Li
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenyan Zhou
- Renal Division, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanwei Lin
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaodong Wang
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuang Ye
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liangjing Lu
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Minfang Zhang
- Renal Division, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sheng Chen
- Department of Rheumatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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10
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Huang L, Lin W, Liu Y, Zhu J, Li Y, Zheng Z, Tang C. Combination treatment with telitacicept, cyclophosphamide and glucocorticoids for severe Granulomatous polyangiitis: a case report and literature review. Front Immunol 2023; 14:1298650. [PMID: 38106422 PMCID: PMC10722187 DOI: 10.3389/fimmu.2023.1298650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 10/26/2023] [Indexed: 12/19/2023] Open
Abstract
Granulomatous polyangiitis (GPA) is a rare autoimmune disease that can involve multiple systems throughout the body, including the ear, nose, upper and lower respiratory tracts. It is classified as an antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis. Telitacicept is a novel recombinant fusion protein targeting B-lymphocyte stimulator (BLyS). Telitacicept can inhibit the development and maturation of abnormal B cells by blocking BLyS, and inhibit the production of antibodies by abnormal plasma cells by blocking APRIL (A proliferation-inducing ligand), which is expected to become a new drug for the treatment of GPA. We report a 64-year-old man diagnosed at our hospital with GPA involving multiple systems including kidneys, lungs, nose and ears. Renal involvement was severe, with a clinical characteristic of rapidly progressive glomerulonephritis and a pathologic manifestation of crescentic nephritis with plasma cell infiltration. The patient was treated with hormones, immunoglobulins and cyclophosphamide (CYC) with the addition of telitacicept and a rapid reduction in hormone dosage. The patient's renal function improved significantly within a short period of time, and his hearing and lung lesions improved significantly. At the same time, he did not develop serious infections and other related complications. Our report suggests that short-term control of the patient's conditions is necessary in GPA patients with organ-threatening disease. Telitacicept combined with CYC and glucocorticoids may be an induction therapy with safety and feasibility. However, more clinical trials are needed to validate the efficacy and safety of the therapeutic regimen.
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Affiliation(s)
- Liqi Huang
- Department of Nephrology, Center of Nephrology and Urology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Wenjian Lin
- Department of Nephrology, Center of Nephrology and Urology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Yu Liu
- Department of Nephrology, Center of Nephrology and Urology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Junfeng Zhu
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Yun Li
- Department of Thoracic Surgery, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong, China
| | - Zhihua Zheng
- Department of Nephrology, Center of Nephrology and Urology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Chun Tang
- Department of Nephrology, Center of Nephrology and Urology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
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11
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Alobaidi A, Albadry A, Murray A, Lytvak I. A Case of Anti-neutrophil Cytoplasmic Antibody-Associated Vasculitis Presenting With Diffuse Alveolar Hemorrhage and Renal Sparing. Cureus 2023; 15:e45397. [PMID: 37854734 PMCID: PMC10580867 DOI: 10.7759/cureus.45397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2023] [Indexed: 10/20/2023] Open
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a necrotizing vasculitis disease that traditionally includes three variants classified based on their clinical and pathological appearance: microscopic polyangiitis (MPA), granulomatosis with polyangiitis, and eosinophilic granulomatosis with polyangiitis (alternatively, Churg-Strauss syndrome). The mainstay of AAV treatment is immunosuppressive treatments, which improve survival and lower rates of end-stage kidney disease. Here we describe a patient with MPA ANCA who presented with diffuse alveolar hemorrhage and, six months later, recurrent pulmonary hemorrhage with renal sparing while off therapy.
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Affiliation(s)
- Ahmed Alobaidi
- Department of Internal Medicine, Methodist Health System, Dallas, USA
| | - Ahmed Albadry
- Faculty of Medicine, Charles University in Prague, Prague, CZE
| | - Anne Murray
- Clinical Research Institute, Methodist Health System, Dallas, USA
| | - Irina Lytvak
- Department of Pathology, Methodist Health System, Dallas, USA
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12
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Wang RX, Wang JW, Li ZY, Chen SF, Yu XJ, Wang SX, Zhang F, Xiong ZY, Bi SH, Wang Y, Zhao MH, Chen M. A modified renal risk score for Chinese patients with antineutrophil cytoplasmic antibody-associated vasculitis. BMC Med 2023; 21:45. [PMID: 36755282 PMCID: PMC9909876 DOI: 10.1186/s12916-023-02755-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 01/26/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND The renal risk score (RRS) is a useful tool to predict end-stage renal disease (ESRD) in patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). The current study aimed to validate the predictive performance of RRS and to further modify this model in Chinese AAV patients. METHODS Two hundred and seventy-two patients diagnosed with AAV confirmed by renal biopsies were retrospectively enrolled from a single center. The RRS was calculated based on 3 categorical variables, i.e., the proportion of normal glomeruli, the proportion of interstitial fibrosis and tubular atrophy (IF/TA), and eGFR at biopsy, classifying these patients into low-, medium-, and high-risk groups. In addition, a modified model was developed based on the RRS and was further validated in another independent cohort of 117 AAV patients. The predictive performance of each model was evaluated according to discrimination and calibration. RESULTS Patients were classified by the RRS into low- (26.5%), medium- (46.7%), and high-risk (26.8%) groups, with 120-month renal survival rates of 93.3%, 57.2%, and 18.4%, respectively (P < 0.001). The RRS showed good discrimination but less satisfactory calibration. Therefore, a modified model with improved discrimination and calibration was developed in Chinese AAV patients, with eGFR, proportion of normal glomeruli (both as continuous variables), and IF/TA (< 25%, 25-50%, > 50%) included. Internal and external validation of the modified model were performed. Finally, an online risk prediction tool was developed based on the modified model. CONCLUSIONS The RRS was an independent predictor of ESRD of AAV patients. The modified model could predict the probability of ESRD for AAV patients with improved performance in Chinese AAV patients.
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Affiliation(s)
- Rui-Xue Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China
| | - Jin-Wei Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China
| | - Zhi-Ying Li
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China.
| | - Su-Fang Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China
| | - Xiao-Juan Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China
| | - Su-Xia Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China.,Laboratory of Electron Microscopy, Pathological Centre, Peking University First Hospital, Beijing, 100034, China
| | - Fan Zhang
- Renal Division, Department of Medicine, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Zu-Ying Xiong
- Renal Division, Department of Medicine, Peking University Shenzhen Hospital, Shenzhen, 518036, China.,Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518036, China
| | - Shu-Hong Bi
- Division of Nephrology, Peking University Third Hospital, Beijing, 100191, China
| | - Yue Wang
- Division of Nephrology, Peking University Third Hospital, Beijing, 100191, China
| | - Ming-Hui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China.,Peking-Tsinghua Center for Life Sciences, Beijing, 100034, China
| | - Min Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, 100034, China
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13
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Uchida T, Ichinose K, Yamashita A, Muta K, Kitamura M, Sato S, Iwamoto N, Nishino T, Kawakami A. Evaluation of a renal risk score for Japanese patients with ANCA-associated glomerulonephritis in a multi-center cohort study. Front Immunol 2023; 14:1141407. [PMID: 36926340 PMCID: PMC10011144 DOI: 10.3389/fimmu.2023.1141407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/17/2023] [Indexed: 03/08/2023] Open
Abstract
Background In patients with anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis, prediction of renal survival should guide the choice of therapy, but a prediction of the histological classification has inconsistencies. Objectives To evaluate the usefulness of renal risk score (RRS) for Japanese patients with ANCA-associated glomerulonephritis (AAGN) and compare the prediction for end-stage renal disease (ESRD) between RRS and the histological classification. Methods We retrospectively analyzed 96 patients with AAGN who underwent a renal biopsy. Renal survival was categorized by RRS, and the histological classification was assessed separately. We compared the predictive values for RRS and the histological classification. Results The median observational period was 37.5 (interquartile range [IQR] 21.5-77.0) months. The median RRS point at the time of renal biopsy was 2 (IQR 0-7.8), and the patients were categorized into low- (n = 29), medium- (n = 43), and high-risk groups (n = 24) using RRS. As expected, the renal prognosis was the worst in the "high-risk" group and the best in the "low-risk" group. In the histological classification, the survival deteriorated progressively from "focal" (best) to "mixed," "crescentic," and "sclerotic" (worst) classes, different from the order in the original proposal for this system. Multivariable Cox regression analysis revealed that RRS was independently associated with ESRD. The difference in prediction for renal survival between RRS and the histological classification was not significant using area under receiver-operating-characteristic curves. Conclusion We evaluated the usefulness of RRS in Japanese patients with AAGN and found it a stable predictor of renal survival in such patients.
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Affiliation(s)
- Tomohisa Uchida
- Department of Rheumatology, National Hospital Organization Ureshino Medical Center, Ureshino, Japan.,Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kunihiro Ichinose
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Department of Rheumatology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Ayuko Yamashita
- Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan
| | - Kumiko Muta
- Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan
| | - Mineaki Kitamura
- Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan
| | - Shuntaro Sato
- Clinical Research Center, Nagasaki University Hospital, Nagasaki, Japan
| | - Naoki Iwamoto
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomoya Nishino
- Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan
| | - Atsushi Kawakami
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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14
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Alba MA, Jennette JC, Hu Y, Poulton CJ, Blazek L, Derebail VK, Falk RJ, Hogan SL. Relevance of Combined Clinicopathologic Phenotype and Antineutrophil Cytoplasmic Autoantibody Serotype in the Diagnosis of Antineutrophil Cytoplasmic Autoantibody Vasculitis. Kidney Int Rep 2022; 7:2676-2690. [PMID: 36506241 PMCID: PMC9727534 DOI: 10.1016/j.ekir.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/08/2022] [Accepted: 09/12/2022] [Indexed: 12/15/2022] Open
Abstract
Introduction Granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA), 2 major clinicopathologic variants of antineutrophil cytoplasmic autoantibody (ANCA) vasculitides, are mostly associated with proteinase 3 (PR3)-ANCA and myeloperoxidase (MPO)-ANCA, respectively. Less is known regarding the uncommon forms of ANCA vasculitis, PR3-ANCA MPA and MPO-ANCA GPA. Methods In this cohort study we detailed the clinical presentation and outcome of patients with PR3-ANCA MPA and MPO-ANCA GPA from the Glomerular Disease Collaborative Network (GDCN) inception cohort. Baseline clinical manifestations, relapses, end-stage kidney disease (ESKD), and survival were compared within MPA cases by PR3-ANCA (n = 116) versus MPO-ANCA (n = 173) and within GPA cases by PR3-ANCA (n = 108) versus MPO-ANCA (n = 43). Fisher's exact test and Wilcoxon two sample test were used for comparisons. Proportional hazards models were used to evaluate the development of relapses, ESKD, and death. Results Patients with PR3-ANCA MPA were younger (53 years vs. 62 years, P = 0.0007) and had increased prevalence of joint involvement (56% vs. 40%, P = 0.0115) and ear, nose, and throat (ENT) involvement (44% vs. 26%, P = 0.002) than MPO-ANCA MPA. Relapses, ESKD, and survival were similar between both MPA subsets. Within the GPA group, patients with MPO-ANCA GPA were older (61 years vs. 46 years, P = 0.0007) and more likely female (56% vs. 35%, P = 0.027) than PR3-ANCA GPA patients. MPO-ANCA GPA was also characterized by less prevalent ENT manifestations (58% vs. 77%, P = 0.028) and neurologic manifestations (5% vs. 25%, P = 0.0029), and increased ESKD and mortality. Conclusions PR3-ANCA MPA and MPO-ANCA GPA are clinicopathologically distinct subsets of ANCA vasculitis that differ from MPO-ANCA MPA and PR3-ANCA GPA. Although the impact of these differences on the clinical management and outcome warrants further evaluation, these results support the recommendation of including both the phenotypic diagnosis and ANCA serotype in the diagnosis of ANCA vasculitis.
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Affiliation(s)
- Marco A. Alba
- Department of Pathology and Laboratory Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - J. Charles Jennette
- Department of Pathology and Laboratory Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yichun Hu
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Caroline J. Poulton
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Lauren Blazek
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Vimal K. Derebail
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ronald J. Falk
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Susan L. Hogan
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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15
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Trivioli G, Marquez A, Martorana D, Tesi M, Kronbichler A, Lyons PA, Vaglio A. Genetics of ANCA-associated vasculitis: role in pathogenesis, classification and management. Nat Rev Rheumatol 2022; 18:559-574. [PMID: 36109667 DOI: 10.1038/s41584-022-00819-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2022] [Indexed: 12/15/2022]
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) comprises granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA) and eosinophilic granulomatosis with polyangiitis (EGPA), that share features of pauci-immune small-vessel vasculitis and the positivity of ANCA targeting proteinase-3 (PR3-ANCA) or myeloperoxidase (MPO-ANCA). AAV syndromes are rare, complex diseases and their aetio-pathogenesis is mainly driven by the interaction between environmental and genetic factors. In patients with GPA and MPA, the genetic associations are stronger with ANCA specificity (PR3- versus MPO-ANCA) than with the clinical diagnosis, which, in keeping with the known clinical and prognostic differences between PR3-ANCA-positive and MPO-ANCA-positive patients, supports an ANCA-based re-classification of these disorders. EGPA is also made up of genetically distinct subsets, which can be stratified on ANCA-status (MPO ANCA-positive versus ANCA-negative); these subsets differ in clinical phenotype and possibly in their response to treatment. Interestingly, MPO-ANCA-positive patients with either MPA or EGPA have overlapping genetic determinants, thus strengthening the concept that this EGPA subset is closely related to the other AAV syndromes. The genetics of AAV provides us with essential information to understand its varied phenotype. This Review discusses the main findings of genetic association studies in AAV, their pathogenic implications and their potential effect on classification, management and prognosis.
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Affiliation(s)
- Giorgio Trivioli
- Department of Biomedical Experimental and Clinical Sciences "Mario Serio", University of Florence, Florence, Italy
- Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence, Italy
| | - Ana Marquez
- Institute of Parasitology and Biomedicine "López-Neyra", CSIC, Granada, Spain
| | - Davide Martorana
- Medical Genetics Unit, Department of Diagnostics, University Hospital of Parma, Parma, Italy
- CoreLab Unit, Research Center, University Hospital of Parma, Parma, Italy
| | - Michelangelo Tesi
- Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence, Italy
| | - Andreas Kronbichler
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK
- Vasculitis and Lupus Service, Department of Renal Medicine, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Paul A Lyons
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Augusto Vaglio
- Department of Biomedical Experimental and Clinical Sciences "Mario Serio", University of Florence, Florence, Italy.
- Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence, Italy.
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16
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Type of ANCA May Be Indispensable in Distinguishing Subphenotypes of Different Clinical Entities in ANCA-Associated Vasculitis. Life (Basel) 2022; 12:life12101467. [DOI: 10.3390/life12101467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
The traditional nomenclature system for classifying antineutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV) based on clinical phenotype describes granulomatosis with polyangiitis (GPA), eosinophilic granulomatosis with polyangiitis (EGPA) and microscopic polyangiitis (MPA) as distinct clinical entities. This classification has proved its expedience in clinical trials and everyday clinical practice; yet, a substantial overlap in clinical presentation still exists and often causes difficulties in prompt definition and clinical distinction. Additionally, new insights into the AAV pathogenesis point out that PR3 and MPO-AAV may not represent expressions of the same disease spectrum but rather two distinct disorders, as they display significant differences. Thus, it is supported that a classification based on ANCA serotype (PR3-ANCA, MPO-ANCA or ANCA-negative) could be more accurate and also closer to the nature of the disease compared to the phenotype-based one. This review aims to elucidate the major differences between PR3 and MPO-AAV in terms of epidemiology, pathogenesis, histological and clinical manifestations and response to therapeutic approaches.
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17
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Wang C, Gong Y, You R, Zhi-Ying L, Ming-Hui Z, Chen M. Down-regulated FcγRII expression on plasma cells is associated with the disease activity of ANCA-associated vasculitis. Rheumatology (Oxford) 2022; 62:1998-2004. [PMID: 36111855 DOI: 10.1093/rheumatology/keac524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/25/2022] [Accepted: 09/01/2022] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
Inhibitory FcγRIIB/CD32B on B cells are critical for immunity regulation to help maintain peripheral tolerance. Altered FcγRIIB expression on B cells has been observed in several autoimmune diseases, and animal studies suggested that FcγRIIB on B cells participates in the pathogenesis of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Here, we investigated the expression of FcγRII (FcγRIIB) on various B cell subsets and the correlation of FcγRII/CD32 expression with disease activity in AAV patients.
Methods
Blood samples of patients with AAV in active stage and in remission were collected. FcγRII/CD32 expressions on various B cell subsets of the whole blood were detected by flow cytometry, and their correlation with clinical and pathological data was analyzed.
Results
The expression of FcγRII/CD32 on plasma cells was significantly lower in AAV patients in active stage than those in both AAV patients in remission and healthy donors. Furthermore, the expression of FcγRII/CD32 on plasma cells negatively correlated with Birmingham Vasculitis Activity Scores and percentages of cellular crescents in renal biopsies.
Conclusion
Hence there is a down-regulation of FcγRIIB/CD32B expression on B cells in patients with AAV, which is associated with the disease activity of AAV.
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Affiliation(s)
- Chen Wang
- Peking University First Hospital; Peking University Institute of Nephrology Renal Division, Department of Medicine, , Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China , Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University) , Ministry of Education, Beijing, China
| | - Yan Gong
- Department of Clinical Laboratory, Peking University First Hospital , Beijing, China
| | - Ran You
- Department of Clinical Laboratory, Peking University First Hospital , Beijing, China
| | - Li Zhi-Ying
- Peking University First Hospital; Peking University Institute of Nephrology Renal Division, Department of Medicine, , Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China , Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University) , Ministry of Education, Beijing, China
| | - Zhao Ming-Hui
- Peking University First Hospital; Peking University Institute of Nephrology Renal Division, Department of Medicine, , Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China , Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University) , Ministry of Education, Beijing, China
- Peking-Tsinghua Center for Life Sciences , Beijing, China
| | - Min Chen
- Peking University First Hospital; Peking University Institute of Nephrology Renal Division, Department of Medicine, , Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China , Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University) , Ministry of Education, Beijing, China
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18
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He X, Wen Y, Hu R, Wu H, Ye W, Yue C, Qin Y, Xia P, Chen L. Interstitial nephritis without glomerulonephritis in ANCA-associated vasculitis: a case series and literature review. Clin Rheumatol 2022; 41:3551-3563. [PMID: 35759125 PMCID: PMC9568481 DOI: 10.1007/s10067-022-06264-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 11/25/2022]
Abstract
The typical nephrological presentation of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is rapidly progressive glomerulonephritis. AAV-associated interstitial nephritis without apparent glomerular lesions was rare. We reported three local cases of AAV-associated interstitial nephritis without glomerulonephritis confirmed by renal biopsy. Then, a literature search was conducted in PubMed using free text words and MeSH terms related to "AAV and interstitial nephritis". Fifteen cases were included, and their demographics, clinical manifestations, laboratory data, renal pathological features, and treatment response were summarized. AAV-associated interstitial nephritis usually affects elderly patients. The common symptoms include fever, arthralgias, and edema. These patients were mostly MPO-ANCA positive. Pathological lesions in the kidney showed diffuse infiltration of inflammatory cells, edema, tubulitis, and fibrosis in the interstitial area. Various immunosuppressive treatments, including glucocorticoids, immunosuppressants, and rituximab, were used, and most of the patients achieved clinical remission. AAV-associated interstitial nephritis is rare but shows a characteristic clinical phenotype, serological results, and pathogenic lesions. Immunosuppressive therapy showed good efficacy in these patients.
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Affiliation(s)
- Xuxia He
- Department of Internal Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yubing Wen
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Rongrong Hu
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Haiting Wu
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Wei Ye
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Cai Yue
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yan Qin
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Peng Xia
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China. .,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
| | - Limeng Chen
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China. .,State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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Wang RX, Wu L, Chen SF, Li ZY, Zhao MH, Chen M. Renal Expression of Annexin A1 Is Associated With the Severity of Renal Injury in Antineutrophil Cytoplasmic Autoantibody-Associated Vasculitis. Front Med (Lausanne) 2022; 9:769813. [PMID: 35783659 PMCID: PMC9247296 DOI: 10.3389/fmed.2022.769813] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 05/27/2022] [Indexed: 12/25/2022] Open
Abstract
Background Increasing studies demonstrated the importance of activation of neutrophils in the pathogenesis of antineutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV). Previous studies showed that annexin A1 (ANXA1) inhibited the recruitment, transendothelial migration and respiratory burst of neutrophils and induced apoptosis of neutrophils. The current study aimed to investigate the plasma and renal levels of ANXA1 as well as their association with the disease severity in AAV patients. Methods Thirty-one AAV patients in active stage and 35 AAV patients in remission stage were recruited. The expression of ANXA1 in renal specimens was assessed by immunohistochemistry. The co-localization of ANXA1 with renal intrinsic and infiltrating cells was detected by double immunofluorescence. The plasma levels of ANXA1 were determined by ELISA. The association of plasma and renal levels of ANXA1 with clinicopathological parameters was further analyzed. Results Plasma levels of ANXA1 were significantly higher in active AAV patients than those in AAV patients in remission as well as healthy controls. The renal expression of ANXA1 was significantly higher in active AAV patients than in healthy controls and disease controls. Double immunofluorescence assay showed that ANXA1 was expressed in glomerular endothelial cells, mesangial cells, podocytes, proximal tubular epithelial cells, neutrophils, monocytes/macrophages and T cells in AAV patients. The mean optical density of ANXA1 in glomeruli was correlated with serum creatinine levels (r = −0.491, P = 0.005) and eGFR (r = 0.492, P = 0.005) at renal biopsy and the proportion of crescents (r = −0.423, P = 0.018) in renal specimens of AAV patients. The expression of ANXA1 in glomeruli of AAV patients achieving complete renal recovery was significantly higher than those achieving partial renal recovery. Conclusion In AAV patients, the renal expression of ANXA1 was associated with the severity of renal injury.
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Affiliation(s)
- Rui-Xue Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
| | - Liang Wu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
| | - Su-Fang Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
| | - Zhi-Ying Li
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
- *Correspondence: Zhi-Ying Li
| | - Ming-Hui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
- Research Units of Diagnosis and Treatment of Immune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Beijing, China
| | - Min Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China
- Research Units of Diagnosis and Treatment of Immune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
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20
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Palomino L, Gaffo A, Sun D, Sattui SE. Clinical Features of ANCA-Associated Vasculitis in African American Patients in the United States: A Single-Center Medical Records Review Study. J Clin Rheumatol 2022; 28:212-216. [PMID: 35319534 DOI: 10.1097/rhu.0000000000001838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND/PURPOSE The aim of this study was to compare the clinical features at presentation of ANCA-associated vasculitis (AAV) between African American (AA) and White patients. METHODS This is a chart review of cases between January 2003 and December 2018. African American patients with AAV were identified and matched in a 1:2 ratio with White comparators based on the year of diagnosis (±4 years). Data on demographics, clinical, and laboratory features and outcomes at presentation were collected. Descriptive statistics were used to compare the characteristics between groups. RESULTS Thirty-two of 56 AA patients with AAV had complete data and were included for analysis. When compared with 64 matched White patients with AAV, AA patients were younger (47.5 vs 61.0 years, p = 0.001). Compared with White patients, AA patients with granulomatosis with polyangiitis (GPA) (35 vs 55 years, p = 0.0006) and microscopic polyangiitis (MPA) (55.5 vs 65.0 years, p = 0.05) were younger. African American patients with GPA were more frequently female (p = 0.008), whereas AA patients with MPA were more frequently male (p = 0.03). No differences in disease manifestations, disease activity, and outcomes were observed between AA and White patients with AAV. CONCLUSIONS In this single-center study, AA patients with AAV were diagnosed at a younger age than Whites; this was found in both the GPA and MPA disease phenotypes. No other significant differences were observed. Future studies are needed to confirm our findings and better describe differences of AAV in racial/ethnic minorities.
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Affiliation(s)
- Luis Palomino
- From the Division of Rheumatology, Allergy, and Immunology, Department of Medicine, University of North Carolina at Chapel Hill, NC
| | | | - Dongmei Sun
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham
| | - Sebastian E Sattui
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
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21
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Increased frequency of IgD-CD27 hiCD38 hi B cells and its association with the renal involvement in ANCA-associated vasculitis. Arthritis Res Ther 2022; 24:109. [PMID: 35568913 PMCID: PMC9107193 DOI: 10.1186/s13075-022-02796-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/03/2022] [Indexed: 11/22/2022] Open
Abstract
Background B cells have been highlighted in the pathogenesis of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) by the identification of activated B cells in granulomatous lesions and the efficacy of B cell depletion in treatment of AAV patients in the current study; we aimed to investigate the frequency of a specific B cell subset, IgD-CD27hiCD38hi B cells in AAV patients, and its association with the disease severity of AAV. Methods Blood samples of patients with AAV in active stage and in remission were collected. The frequency of IgD-CD27hiCD38hi B cells was detected by flow cytometry, and its correlation with clinicopathological parameters was analyzed. Results Our results showed a significant increase of circulating IgD-CD27hiCD38hi B cells in AAV patients in active stage compared with patients in remission and healthy donors, and the frequency of IgD-CD27hiCD38hi B cells correlated with the severity of renal involvement, including serum creatinine, estimated glomerular filtration rate, and percentages of total crescents in renal biopsies. Conclusions The results indicated that IgD-CD27hiCD38hi B cells could reflect disease severity of renal involvement in AAV. Supplementary Information The online version contains supplementary material available at 10.1186/s13075-022-02796-9.
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Nasr R, Balasubramanian P, Desiderio L, Abdelattif M. A Rare Case of Nephrotic-Range Proteinuria in Antineutrophil Cytoplasmic Antibodies (ANCA)-Associated Vasculitis. Cureus 2022; 14:e24889. [PMID: 35572457 PMCID: PMC9097937 DOI: 10.7759/cureus.24889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2022] [Indexed: 11/05/2022] Open
Abstract
Granulomatosis with polyangiitis (GPA), or Wegener’s granulomatosis as it was formerly referred to, is an antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). GPA is characterized as a necrotizing vasculitis with few or no immune deposits termed pauci-immune deposits, predominantly affecting small and medium arterial vessels, involving the upper and lower respiratory tract as well as glomeruli. Renal manifestations are of critical importance because of the progression that may ensue following onset. Glomerulonephritis (primarily rapidly progressive crescentic glomerulonephritis) is quite common, which eventually leads to chronic kidney disease or end-stage renal disease. Usually, patients with GPA and rapidly progressive glomerulonephritis have an elevated plasma creatinine level and urinalysis revealing dysmorphic hematuria, red cell casts, and sub-nephrotic levels of proteinuria. We present a case of a 44-year-old male whose biopsy demonstrated crescentic glomerulonephritis, pauci-immune type proteinase 3 antineutrophil cytoplasmic antibody (PR3-ANCA) consistent with GPA, as well as profound proteinuria, an atypical manifestation.
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23
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Saito M, Saito A, Abe F, Imaizumi C, Kaga H, Sawamura M, Nara M, Ozawa M, Sato R, Nakayama T, Okuyama S, Masai R, Ohtani H, Komatsuda A, Wakui H, Takahashi N. Evaluation of a newly proposed renal risk score for Japanese patients with ANCA-associated glomerulonephritis. Clin Exp Nephrol 2022; 26:760-769. [PMID: 35394553 DOI: 10.1007/s10157-022-02217-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 03/22/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND We determined the usefulness and prognostic ability of the renal risk score (RRS), proposed in Europe, for Japanese patients with antineutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis (AAGN) and high myeloperoxidase (MPO)-ANCA positivity; these aspects remain to be verified. METHODS This retrospective study was conducted on 86 Japanese patients with new, biopsy-confirmed AAGN. We calculated the RRS and analyzed the relationship between this classification, and clinicopathological features and prognosis. We also compared the predictive values between RRS for endpoints including renal death and conventional prognostic tools for patients with AAGN. RESULTS There were 33, 37, and 16 patients in the low-, medium-, and high-risk groups, respectively. All patients were MPO-ANCA positive. The median follow-up period was 33 months; 16 (18.6%) patients progressed to end-stage renal disease (ESRD). In the high-risk group, 9/16 (56.3%) patients progressed to ESRD, and renal prognosis was significantly poorer than that in other groups (low-risk group, P < 0.001; medium-risk group, P = 0.004). In Cox multivariate regression analysis, RRS was an independent, poor renal prognostic factor (hazard ratio 5.22; 95% confidence interval 2.20-12.40; P < 0.001). The receiver-operating characteristic curves of the RRS for each endpoint were comparable with those of the 2010 histological classification and those of the severity classification of Japanese rapidly progressive glomerulonephritis. CONCLUSIONS This is the first study to report the usefulness of the RRS for predicting renal outcomes among Japanese patients with AAGN. Our predictive value of the RRS was comparable with that of conventional prognostic tools.
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Affiliation(s)
- Masaya Saito
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan.
| | - Ayano Saito
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - Fumito Abe
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
- Department of Internal Medicine, Yuri Kumiai General Hospital, Akita, Japan
| | - Chihiro Imaizumi
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - Hajime Kaga
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - Masato Sawamura
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - Mizuho Nara
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - Masatoyo Ozawa
- Department of Nephrology, Akita Kosei Medical Center, Akita, Japan
| | - Ryuta Sato
- Department of Nephrology, Akita Red Cross Hospital, Akita, Japan
| | - Takahiro Nakayama
- Department of Nephrology and Rheumatology, Nihonkai General Hospital, Yamagata, Japan
| | - Shin Okuyama
- Department of Nephrology and Rheumatology, Nakadori General Hospital, Akita, Japan
| | - Rie Masai
- Department of Nephrology, Akita City Hospital, Akita, Japan
| | - Hiroshi Ohtani
- Department of Nephrology, Akita Kosei Medical Center, Akita, Japan
| | - Atsushi Komatsuda
- Department of Internal Medicine and Cardiology, Ogachi Central Hospital, Akita, Japan
| | - Hideki Wakui
- Department of Life Science, Akita University Graduate School of Engineering Science, Akita, Japan
| | - Naoto Takahashi
- Department of Hematology, Nephrology, and Rheumatology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
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Hishida E, Kobayashi T, Ono Y, Oka K, Masuda T, Ueda Y, Akimoto T, Saito O, Nagata D. Tubulointerstitial nephritis in antineutrophil cytoplasmic antibody-associated vasculitis with monoclonal gammopathy. CEN Case Rep 2022; 11:36-42. [PMID: 34282535 PMCID: PMC8811071 DOI: 10.1007/s13730-021-00620-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/28/2021] [Indexed: 11/30/2022] Open
Abstract
Isolated tubulointerstitial nephritis (TIN) without glomerular crescent formation is a rare manifestation of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Some patients with monoclonal gammopathy of undetermined significance present with renal complications due to serum monoclonal protein. Here, we present a case of TIN presumably attributable to AAV with monoclonal gammopathy. Laboratory data revealed acute kidney injury, elevated C-reactive protein (CRP) and ANCA titers, and elevated tubular injury markers. Renal biopsy revealed TIN with no apparent glomerular lesion. The findings of peritubular capillaritis and tubulitis indicated that AAV had contributed to the development of TIN. However, in situ hybridization for free light chains revealed kappa light chain restriction, indicating that the involvement of monoclonal gammopathy in the pathogenesis of TIN remains possible. The patient also developed ophthalmic neuropathy, probably caused by AAV. Oral prednisone (0.6 mg/kg/day) administration improved both the ocular symptoms and the laboratory parameters. Our case demonstrated that the concurrence of AAV and monoclonal gammopathy could pose a diagnostic dilemma in distinguishing the cause of TIN. Besides, some reports suggest an association between AAV and monoclonal gammopathy, although direct evidence is lacking. Further research is needed to establish this association.
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Affiliation(s)
- Erika Hishida
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takahisa Kobayashi
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yuko Ono
- Department of Pathology, Saitama Medical Center, Dokkyo Medical University, Koshigaya, Saitama, Japan
| | - Kentaro Oka
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takahiro Masuda
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yoshihiko Ueda
- Department of Pathology, Saitama Medical Center, Dokkyo Medical University, Koshigaya, Saitama, Japan
| | - Tetsu Akimoto
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Osamu Saito
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Daisuke Nagata
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
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Toraman A, Soysal Gündüz Ö. Predictors of renal and patient outcomes in anti-neutrophil cytoplasmic antibody-associated vasculitis: Our single-center, tertiary care experience. Arch Rheumatol 2021; 36:445-457. [PMID: 34870177 PMCID: PMC8612491 DOI: 10.46497/archrheumatol.2021.8687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 02/26/2021] [Indexed: 11/15/2022] Open
Abstract
Objectives
This study aims to assess the different predictors of renal and patient prognosis in anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV) patients with and without renal involvement. Patients and methods
A total of 79 patients (51 males, 28 females; mean age: 57.3±14.2 years; range, 18 to 71 years) with AAV between January 2006 and November 2019 were retrospectively analyzed. Demographic and laboratory data including the complement 3 (C3) serum levels and renal biopsy findings were extracted from the electronic and printed medical records of the hospital registry. Survival, renal survival, remission, and relapse outcomes were analyzed. Results
A total of 35% of the patients with renal involvement progressed to end-stage renal disease (ESRD). The dialysis requirement at the time of admission (hazard ratio [HR]: 21.95 [2.93-164.22]; p=0.003), estimated glomerular filtration rate (eGFR) (HR: 0.97 [0.94-0.99]; p=0.024) and Five-Factor Score (FFS) ≥2 at the time of diagnosis (HR: 3.59 [1.08-11.94]; p=0.037) were the predictors of ESRD. The five-year patient survival rate was 87.1%. The only predictor of mortality was age (HR: 1.07 [1.01-1.14]; p=0.024). The patients with hypocomplementemia (22%) had a lower remission rate (p=0.049), FFS ≥2 at the time of diagnosis (p=0.026), and higher levels of hematuria (p=0.004) and proteinuria (p=0.037). The FFS ≥2 at the time of diagnosis was an independent predictor of relapse (HR: 8.9 [1.02-77.36]; p=0.047). Conclusion
Our study suggests that the baseline renal function and FFS ≥2 at the time of diagnosis are the major prognostic factors for progression to ESRD in AAV patients. In addition, AAV patients with hypocomplementemia may have a lower remission rate.
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Affiliation(s)
- Aysun Toraman
- Department of Internal Medicine, Division of Nephrology, Celal Bayar University, Faculty of Medicine, Manisa, Turkey
| | - Özgül Soysal Gündüz
- Department of Internal Medicine, Division of Rheumatology, Celal Bayar University, Faculty of Medicine, Manisa, Turkey
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Moran SM, Scott J, Clarkson MR, Conlon N, Dunne J, Griffin MD, Griffin TP, Groarke E, Holian J, Judge C, Wyse J, McLoughlin K, O’Hara PV, Kretzler M, Little MA. The Clinical Application of Urine Soluble CD163 in ANCA-Associated Vasculitis. J Am Soc Nephrol 2021; 32:2920-2932. [PMID: 34518279 PMCID: PMC8806104 DOI: 10.1681/asn.2021030382] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 08/04/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Up to 70% of patients with ANCA-associated vasculitis (AAV) develop GN, with 26% progressing to ESKD. Diagnostic-grade and noninvasive tools to detect active renal inflammation are needed. Urinary soluble CD163 (usCD163) is a promising biomarker of active renal vasculitis, but a diagnostic-grade assay, assessment of its utility in prospective diagnosis of renal vasculitis flares, and evaluation of its utility in proteinuric states are needed. METHODS We assessed a diagnostic-grade usCD163 assay in (1) a real-world cohort of 405 patients with AAV and 121 healthy and 488 non-AAV disease controls; (2) a prospective multicenter study of 84 patients with potential renal vasculitis flare; (3) a longitudinal multicenter cohort of 65 patients with podocytopathy; and (4) a cohort of 29 patients with AAV (with or without proteinuria) and ten controls. RESULTS We established a diagnostic reference range, with a cutoff of 250 ng/mmol for active renal vasculitis (area under the curve [AUC], 0.978). Using this cutoff, usCD163 was elevated in renal vasculitis flare (AUC, 0.95) but remained low in flare mimics, such as nonvasculitic AKI. usCD163's specificity declined in patients with AAV who had nephrotic-range proteinuria and in those with primary podocytopathy, with 62% of patients with nephrotic syndrome displaying a "positive" usCD163. In patients with AAV and significant proteinuria, usCD163 normalization to total urine protein rather than creatinine provided the greatest clinical utility for diagnosing active renal vasculitis. CONCLUSIONS usCD163 is elevated in renal vasculitis flare and remains low in flare mimics. Nonspecific protein leakage in nephrotic syndrome elevates usCD163 in the absence of glomerular macrophage infiltration, resulting in false-positive results; this can be corrected with urine protein normalization.
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Affiliation(s)
- Sarah M. Moran
- Trinity Health Kidney Centre, Trinity College Dublin, Dublin, Ireland,Department of Medicine, Queen’s University, Kingston, Ontario, Canada
| | - Jennifer Scott
- Trinity Health Kidney Centre, Trinity College Dublin, Dublin, Ireland
| | | | | | | | - Matthew D. Griffin
- REMEDI at CÚRAM SFI Centre for Research in Medical Devices, School of Medicine, National University of Ireland, Galway, Ireland,Department of Nephrology, Saolta University Health Care Group, Galway University Hospitals, Galway, Ireland
| | - Tomas P. Griffin
- REMEDI at CÚRAM SFI Centre for Research in Medical Devices, School of Medicine, National University of Ireland, Galway, Ireland,Centre for Endocrinology, Diabetes and Metabolism, Saolta University Health Care Group, Galway University Hospitals, Galway, Ireland
| | | | - John Holian
- St Vincent’s University Hospital, Dublin, Ireland
| | - Conor Judge
- Department of Nephrology, Saolta University Health Care Group, Galway University Hospitals, Galway, Ireland,Centre for Endocrinology, Diabetes and Metabolism, Saolta University Health Care Group, Galway University Hospitals, Galway, Ireland
| | - Jason Wyse
- Discipline of Statistics and Information Systems, Trinity College Dublin, Dublin, Ireland
| | | | | | - Matthias Kretzler
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan,Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Mark A. Little
- Trinity Health Kidney Centre, Trinity College Dublin, Dublin, Ireland,Beaumont Kidney Centre, Dublin, Ireland,Tallaght University Hospital, Dublin, Ireland
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Tampe D, Korsten P, Ströbel P, Hakroush S, Tampe B. Comprehensive Analysis of Sex Differences at Disease Manifestation in ANCA-Associated Glomerulonephritis. Front Immunol 2021; 12:736638. [PMID: 34630417 PMCID: PMC8495213 DOI: 10.3389/fimmu.2021.736638] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/07/2021] [Indexed: 12/02/2022] Open
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a small vessel vasculitis affecting multiple organ systems, including the kidney. Besides investigations focusing on renal outcomes, sex differences associated with distinct clinical and histopathological findings in ANCA glomerulonephritis (GN) have not been systematically investigated. Therefore, we here aimed to systematically analyze sex differences in patients with AAV and biopsy-proven ANCA GN. We provide a comprehensive analysis of 53 kidney biopsies with ANCA GN retrospectively included between 2015 and 2020 and identified specific sex differences in ANCA GN concerning laboratory parameters and systematic scoring of renal histopathology glomerular and tubulointerstitial lesions, and extrarenal manifestations of AAV. We did not observe any correlation between sex and short-term clinical AAV course or disease severity by comparing general AAV parameters. AAV manifestations in females occurred at an older age with more joint involvement. Regarding histopathological findings, we, again, observed no sex difference among ANCA GN classification, but a significant correlation between females and distinct histopathological findings with less tubulointerstitial inflammation and vasculitis of peritubular capillaries. Finally, we here identified fewer associations between clusters of clinical, laboratory parameters, and histopathological findings in females as compared to males. These findings are of great relevance and further improve our understanding of sex differences in the pathogenesis of ANCA GN. While future studies about specific sex differences and conclusions in these clusters are crucial, our observations further support that sex differences are relevant, affect distinct parameters, and influence clinical, laboratory parameters, and histopathological findings in AAV, particularly ANCA GN.
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Affiliation(s)
- Désirée Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | - Peter Korsten
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Samy Hakroush
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Björn Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
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Boudhabhay I, Delestre F, Coutance G, Gnemmi V, Quemeneur T, Vandenbussche C, Lazareth H, Canaud G, Tricot L, Gosset C, Hummel A, Terrier B, Rabant M, van Daalen EE, Wester Trejo MA, Bajema IM, Karras A, Duong Van Huyen JP. Reappraisal of Renal Arteritis in ANCA-associated Vasculitis: Clinical Characteristics, Pathology, and Outcome. J Am Soc Nephrol 2021; 32:2362-2374. [PMID: 34155059 PMCID: PMC8729836 DOI: 10.1681/asn.2020071074] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 05/08/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Renal involvement in ANCA-associated vasculitis (AAV) is associated with poor outcomes. The clinical significance of arteritis of the small kidney arteries has not been evaluated in detail. METHODS In a multicenter cohort of patients with AAV and renal involvement, we sought to describe the clinicopathologic characteristics of patients with AAV who had renal arteritis at diagnosis, and to retrospectively analyze their prognostic value. RESULTS We included 251 patients diagnosed with AAV and renal involvement between 2000 and 2019, including 34 patients (13.5%) with arteritis. Patients with AAV-associated arteritis were older, and had a more pronounced inflammatory syndrome compared with patients without arteritis; they also had significantly lower renal survival (P=0.01). In multivariable analysis, the ANCA renal risk score, age at diagnosis, history of diabetes mellitus, and arteritis on index kidney biopsy were independently associated with ESKD. The addition of the arteritis status significantly improved the discrimination of the ANCA renal risk score, with a concordance index (C-index) of 0.77 for the ANCA renal risk score alone, versus a C-index of 0.80 for the ANCA renal risk score plus arteritis status (P=0.008); ESKD-free survival was significantly worse for patients with an arteritis involving small arteries who were classified as having low or moderate risk, according to the ANCA renal risk score. In two external validation cohorts, we confirmed the incidence and phenotype of this AAV subtype. CONCLUSIONS Our findings suggest AAV with renal arteritis represents a different subtype of AAV with specific clinical and histologic characteristics. The prognostic contribution of the arteritis status remains to be prospectively confirmed.
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Affiliation(s)
- Idris Boudhabhay
- Department of Pathology, Necker Hospital, Paris, France,Department of Nephrology and Transplantation, Necker Hospital, Paris, France,Paris University, Paris, France
| | - Florence Delestre
- Paris University, Paris, France,Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Paris, France
| | - Guillaume Coutance
- Paris-Sorbonne University, Paris, France,Department of Cardiac and Thoracic Surgery, Cardiology Institute, Paris, France
| | - Viviane Gnemmi
- Pathology Department, Lille University Hospital, Lille, France,JPARC-Jean-Pierre Aubert Research Center, Lille, France
| | - Thomas Quemeneur
- Nephrology and Internal Medicine Department, Hospital of Valenciennes, Valenciennes, France
| | - Cyrille Vandenbussche
- Nephrology and Internal Medicine Department, Hospital of Valenciennes, Valenciennes, France
| | - Helene Lazareth
- Renal Division, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris, and Université de Paris, Paris, France
| | - Guillaume Canaud
- Department of Nephrology and Transplantation, Necker Hospital, Paris, France,Paris University, Paris, France
| | - Leila Tricot
- Department of Nephrology, Hôpital Foch, Suresnes, France
| | - Clément Gosset
- Department of Nephrology, Centre Universitaire de la Réunion, La Réunion, France
| | - Aurélie Hummel
- Department of Nephrology and Transplantation, Necker Hospital, Paris, France
| | - Benjamin Terrier
- Paris University, Paris, France,Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Paris, France
| | - Marion Rabant
- Department of Pathology, Necker Hospital, Paris, France
| | - Emma E. van Daalen
- Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Ingeborg M. Bajema
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Alexandre Karras
- Renal Division, Georges Pompidou European Hospital, Assistance Publique-Hôpitaux de Paris, and Université de Paris, Paris, France
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Tampe D, Schridde L, Korsten P, Ströbel P, Zeisberg M, Hakroush S, Tampe B. Different Patterns of Kidney Fibrosis Are Indicative of Injury to Distinct Renal Compartments. Cells 2021; 10:2014. [PMID: 34440782 PMCID: PMC8392296 DOI: 10.3390/cells10082014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 08/05/2021] [Indexed: 01/20/2023] Open
Abstract
Kidney fibrosis is a common manifestation and hallmark of a wide variety of chronic kidney disease (CKD) that appears in different morphological patterns, suggesting distinct pathogenic causes. Broad macroscopically visible scars are the sequelae of severe focal injury and complete parenchymal destruction, reflecting a wound healing response as a consequence of infarction. In the kidney, chronic glomerular injury leads to atrophy of the corresponding tubule, degeneration of this specific nephron, and finally interstitial fibrosis/tubular atrophy (IF/TA). Compared to this glomerulus-induced focal replacement scar, diffuse fibrosis independent of tubular atrophy appears to be a different pathogenic process. Kidney fibrosis appears to develop in a compartment-specific manner, but whether focal and diffuse fibrosis has distinct characteristics associated with other glomerular or tubulointerstitial lesions remains elusive. In the present study, we aimed to analyze renal fibrotic patterns related to renal lesions, which directly contribute to renal fibrogenesis, to unravel fibrotic patterns and manifestations upon damage to distinct renal compartments. Patterns of kidney fibrosis were analyzed in experimental models of CKD and various renal pathologies in correlation with histopathological and ultrastructural findings. After the induction of isolated crescentic glomerulonephritis (GN) in nephrotoxic serum-nephritis (NTN), chronic glomerular damage resulted in predominantly focal fibrosis adjacent to atrophic tubules. By contrast, using unilateral ureteral obstruction (UUO) as a model of primary injury to the tubulointerstitial compartment revealed diffuse fibrosis as the predominant pattern of chronic lesions. Finally, folic acid-induced nephropathy (FAN) as a model of primary tubular injury with consecutive tubular atrophy independent of chronic glomerular damage equally induced predominant focal IF/TA. By analyzing several renal pathologies, our data also suggest that focal and diffuse fibrosis appear to contribute as chronic lesions in the majority of human renal disease, mainly being present in antineutrophil cytoplasmic antibody (ANCA)-associated GN, lupus nephritis, and IgA nephropathy (IgAN). Focal IF/TA correlated with glomerular damage and irreversible injury to nephrons, whereas diffuse fibrosis in ANCA GN was associated explicitly with interstitial inflammation independent of glomerular damage and nephron loss. Ultrastructural analysis of focal IF/TA versus diffuse fibrosis revealed distinct matrix compositions, further supported by different collagen signatures in transcriptome datasets. With regard to long-term renal outcome, only the extent of focal IF/TA correlated with the development of end-stage kidney disease (ESKD) in ANCA GN. In contrast, diffuse kidney fibrosis did not associate with the long-term renal outcome. In conclusion, we here provide evidence that a focal pattern of kidney fibrosis seems to be associated with nephron loss and replacement scarring. In contrast, a diffuse pattern of kidney fibrosis appears to result from primary interstitial inflammation and injury.
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Affiliation(s)
- Désirée Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, 37075 Göttingen, Germany; (D.T.); (P.K.); (M.Z.)
| | - Laura Schridde
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany; (L.S.); (P.S.)
| | - Peter Korsten
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, 37075 Göttingen, Germany; (D.T.); (P.K.); (M.Z.)
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany; (L.S.); (P.S.)
| | - Michael Zeisberg
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, 37075 Göttingen, Germany; (D.T.); (P.K.); (M.Z.)
| | - Samy Hakroush
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany; (L.S.); (P.S.)
| | - Björn Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, 37075 Göttingen, Germany; (D.T.); (P.K.); (M.Z.)
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Characterization of interstitial infiltrates in MPO and PR3 anti-neutrophil cytoplasmic antibody glomerulonephritis. J Nephrol 2021; 35:1171-1175. [PMID: 34283405 DOI: 10.1007/s40620-021-01126-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/13/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION It has been recognized that T cells have a pathogenic role in anti-neutrophil cytoplasmic antibody- (ANCA) associated vasculitis, in addition to being dominant cells in the interstitium in ANCA glomerulonephritis (GN). Given there are differences in renal outcomes based on ANCA type, we sought to characterize the interstitial infiltrate in ANCA GN to determine differences in relation to ANCA type and renal function. METHODS Immunohistochemistry stains for CD3, CD4, CD20, C4d and FOXP3 were done in renal biopsies of patients with ANCA GN. Light microscopy was used to determine the percentage of cortical interstitium containing positive cells. Demographics, ANCA type and entry eGFR were recorded. The level of staining was compared between ANCA type and entry eGFR using Wilcoxon rank-sum test. RESULTS Renal biopsies of 16 patients with MPO and 14 with PR3 ANCA GN were studied. CD3 cells were the predominant cells, with all biopsies staining positive for CD4 and FOXP3. C4d staining was negative in all biopsies, with no significant difference in staining between MPO and PR3 groups for any of the identified cell types. However, regardless of ANCA type, FOXP3 staining was significantly higher in patients with baseline GFR < 10 compared with GFR > 10 mL/min/1.73 m2(mean 7.54, SD 6.6 versus mean 2.67, SD 3.6; p = 0.04). CONCLUSION These data confirm the role of T cells in ANCA GN and demonstrate no differences in interstitial T and B cell infiltrates between PR3 and MPO ANCA GN. Higher FOXP3 signal associates with lower renal function, suggesting a role for regulatory T cells. Further characterization of this T cell subset should be explored in future studies.
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Vegting Y, Vogt L, Anders HJ, de Winther MPJ, Bemelman FJ, Hilhorst ML. Monocytes and macrophages in ANCA-associated vasculitis. Autoimmun Rev 2021; 20:102911. [PMID: 34298153 DOI: 10.1016/j.autrev.2021.102911] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 06/05/2021] [Indexed: 12/15/2022]
Abstract
Anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitides (AAV) are characterized by inflammation of small-to-medium-sized blood vessels and the presence of autoantibodies against cytoplasmic proteases sited in neutrophils and monocytes. Increasing evidence indicates a substantial role of monocytes and macrophages in the pathogenesis of AAV. Activated monocytes and macrophages contribute to necroinflammation in peripheral vasculitic lesions as well as to central and peripheral mechanisms of autoimmunity. The intermediate monocyte subset (CD14++CD16+) is increased and monocytes show elevated expression of CD14, Toll-like receptor 2/4, MHCII and integrins, likely reflecting activation and increased monocyte extravasation. Monocytes differentiate locally predominantly into alternatively activated (M2) macrophages, which are known for cell-clearance and phagocytosis, but may ultimately lead to fibrosis. Phagocytotic function of macrophages can be impaired by surface expression of cytoplasmic proteases on apoptotic neutrophils and causes release of inflammatory cytokines and immunogenic contents, presumably resulting in a vicious circle of increased neutrophil, T and B cell activation and consequent ANCA production. Considering their crucial role in initiating necroinflammation as well as fibrogenesis, monocytes and macrophages may represent a logic first-line target for new treatment options in AAV.
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Affiliation(s)
- Yosta Vegting
- Department of Internal Medicine, Section of Nephrology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands.
| | - Liffert Vogt
- Department of Internal Medicine, Section of Nephrology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Hans-Joachim Anders
- Department of Internal Medicine IV, Division of Nephrology, University Hospital of the Ludwig Maximilians University Munich, Munich, Germany
| | - Menno P J de Winther
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Amsterdam Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Frederike J Bemelman
- Department of Internal Medicine, Section of Nephrology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Marc L Hilhorst
- Department of Internal Medicine, Section of Nephrology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
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Calatroni M, Consonni F, Allinovi M, Bettiol A, Jawa N, Fiasella S, Curi D, Abu Rumeileh S, Tomei L, Fortunato L, Gelain E, Gianfreda D, Oliva E, Jeannin G, Salviani C, Emmi G, Bodria M, Sinico RA, Moroni G, Ramirez GA, Bozzolo E, Tombetti E, Monti S, Bracaglia C, Marucci G, Pastore S, Esposito P, Catanoso MG, Crapella B, Montini G, Roperto R, Materassi M, Rossi GM, Badalamenti S, Yeung RS, Romagnani P, Ghiggeri GM, Noone D, Vaglio A. Prognostic Factors and Long-Term Outcome with ANCA-Associated Kidney Vasculitis in Childhood. Clin J Am Soc Nephrol 2021; 16:1043-1051. [PMID: 34039568 PMCID: PMC8425616 DOI: 10.2215/cjn.19181220] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/21/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND OBJECTIVES ANCA-associated vasculitis is extremely rare in children. We report the clinicopathologic features, long-term outcomes, and prognostic factors of a large pediatric cohort of patients with ANCA-associated kidney vasculitis. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS This retrospective study included 85 consecutive patients with kidney biopsy specimen-proven ANCA-associated vasculitis from tertiary referral centers in Italy and Canada. Kidney biopsy specimens were categorized as focal, crescentic, sclerotic, or mixed, according to the Berden classification. The prognostic significance of baseline clinical, laboratory, and histologic findings was analyzed with respect to kidney failure or CKD stage 3-5/kidney failure. RESULTS A total of 53 patients had microscopic polyangiitis (62%), and 32 had granulomatosis with polyangiitis (38%). Rapidly progressive GN was the most frequent presentation (39%); a third of the patients also had nephrotic-range proteinuria. Kidney biopsy specimens were classified as focal in 21% of the patients, crescentic in 51%, sclerotic in 15%, and mixed in 13%. Remission-induction therapies included cyclophosphamide in 78% of patients. A total of 25 patients (29%) reached kidney failure. The median (interquartile range) time to kidney failure or last follow-up was 35 (6-89) months in the whole cohort, and 73 (24-109) months among the patients who did not reach this outcome. Patients whose biopsy specimens showed sclerotic histology had significantly shorter kidney survival (hazard ratio, 11.80; 95% confidence interval, 2.49 to 55.99) and survival free of CKD stage 3-5 (hazard ratio, 8.88; 95% confidence interval, 2.43 to 32.48), as compared with those with focal/mixed histology. Baseline eGFR, low serum albumin, hypertension, central nervous system complications, and sclerotic histology, which reflected severe kidney involvement, were associated with both kidney failure and CKD stage 3-5/kidney failure at unadjusted analysis; no independent prognostic factors emerged at multivariable analysis. CONCLUSIONS Children with ANCA-associated kidney vasculitis often have aggressive presentation; a third of such children progress to kidney failure and this usually occurs early during follow-up. A severe clinical presentation is associated with the development of CKD or kidney failure.
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Affiliation(s)
- Marta Calatroni
- Nephrology Unit, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Filippo Consonni
- Department of Health Sciences, University of Florence, Florence, Italy
| | | | - Alessandra Bettiol
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Natasha Jawa
- Division of Nephrology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Susanna Fiasella
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | - Dritan Curi
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | | | - Leonardo Tomei
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Laura Fortunato
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | - Elena Gelain
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | | | - Elena Oliva
- Nephrology Unit, Riuniti Hospital Marche, Ancona, Italy
| | - Guido Jeannin
- Nephrology Unit, Spedali Civili Hospital, Brescia, Italy
| | | | - Giacomo Emmi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Monica Bodria
- Laboratory of Molecular Nephrology and Division of Nephrology and Transplantation, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Giannina Gaslini Institute, Genoa, Italy
| | - Renato A. Sinico
- Laboratory of Molecular Nephrology and Division of Nephrology and Transplantation, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Giannina Gaslini Institute, Genoa, Italy
| | | | - Giuseppe A. Ramirez
- Nephrology Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Enrica Bozzolo
- Nephrology Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Enrico Tombetti
- Nephrology Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Sara Monti
- Unit of Immunology, Allergy, Rheumatology and Rare Disease, San Raffaele Hospital, Milan, Italy
| | - Claudia Bracaglia
- Department of Rheumatology, IRCCS Policlinico S. Matteo Foundation, University of Pavia, Pavia, Italy
| | - Giulia Marucci
- Department of Rheumatology, IRCCS Policlinico S. Matteo Foundation, University of Pavia, Pavia, Italy
| | - Serena Pastore
- Division of Rheumatology, IRCCS Bambino Gesù Children’s Hospital, Rome, Italy
| | - Pasquale Esposito
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo Hospital, Trieste, Italy
| | - Maria G. Catanoso
- Unit of Nephrology, Dialysis and Transplantation, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino–IRCCS, Genoa, Italy
| | - Barbara Crapella
- Rheumatology Unit, IRCCS Reggio Emilia Hospital, Reggio Emilia, Italy
| | - Giovanni Montini
- Rheumatology Unit, IRCCS Reggio Emilia Hospital, Reggio Emilia, Italy
| | - Rosa Roperto
- Pediatric Nephrology, Dialysis and Transplant Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Marco Materassi
- Pediatric Nephrology, Dialysis and Transplant Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Giovanni M. Rossi
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio,” University of Florence, Florence, Italy
| | | | - Rae S.M. Yeung
- Nephrology Unit, Parma University Hospital, Parma, Italy
| | - Paola Romagnani
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio,” University of Florence, Florence, Italy
| | - Gian M. Ghiggeri
- Laboratory of Molecular Nephrology and Division of Nephrology and Transplantation, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Giannina Gaslini Institute, Genoa, Italy
| | - Damien Noone
- Division of Nephrology, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Augusto Vaglio
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
- Pediatric Translational Research Chair, University of Toronto, Toronto, Ontario, Canada
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Naeem M, Menias CO, Cail AJ, Zulfiqar M, Ballard DH, Pickhardt PJ, Kim DH, Lubner MG, Mellnick VM. Imaging Spectrum of Granulomatous Diseases of the Abdomen and Pelvis. Radiographics 2021; 41:783-801. [PMID: 33861648 DOI: 10.1148/rg.2021200172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A granuloma is a compact organization of mature macrophages that forms because of persistent antigenic stimulation. At the microscopic level, granulomas can undergo various morphologic changes, ranging from necrosis to fibrosis, which along with other specialized immune cells define the appearance of the granulomatous process. Accordingly, the imaging features of granulomatous diseases vary and can overlap with those of other diseases, such as malignancy, and lead to surgical excisions and biopsy. However, given the heterogeneity of granulomas as a disease group, it is often hard to make a diagnosis on the basis of the histopathologic features of granulomatous diseases alone owing to overlapping microscopic features. Instead, a multidisciplinary approach is often helpful. Radiologists need to be familiar with the salient clinical manifestations and imaging findings of granulomatous diseases to generate an appropriate differential diagnosis. ©RSNA, 2021.
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Affiliation(s)
- Muhammad Naeem
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - Christine O Menias
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - Austin J Cail
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - Maria Zulfiqar
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - David H Ballard
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - Perry J Pickhardt
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - David H Kim
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - Meghan G Lubner
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
| | - Vincent M Mellnick
- From the Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, St Louis, MO 63110 (M.N., A.J.C., M.Z., D.H.B., V.M.M.); Division of Abdominal Imaging, Department of Radiology, Mayo Clinic Arizona, Scottsdale, Ariz (C.O.M.); and Division of Abdominal Imaging and Intervention, Department of Radiology, University of Wisconsin-Madison, Madison, Wis (P.J.P., D.H.K., M.G.L.)
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Oelzner P, Wolf G. Risikostratifizierung bei ANCA-assoziierten
Vaskulitiden. AKTUEL RHEUMATOL 2021. [DOI: 10.1055/a-1380-2984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
ZusammenfassungANCA-assoziierte Vaskulitiden (AAV) sind nekrotisierende Vaskulitiden der
kleinen bis mittelgroßen Gefäße, welche die
Granulomatose mit Polyangiitis (GPA), die mikroskopische Polyangiitis (MPA)
und die Eosinophile Granulomatose mit Polyangiitis (EGPA) umfassen. AAV
gehen häufig mit Organfunktion-bedrohenden Manifestationen und einer
entsprechend erhöhten Mortalität einher. Für die
Planung von Diagnostik, Therapie und Langzeitbetreuung ist daher eine
Risikostratifizierung im Hinblick auf Mortalität, Entwicklung
schwerer Organinsuffizienzen, insbesondere einer terminalen
Niereninsuffizienz, mögliche Therapieresistenz, Rezidive,
Infektionen und Malignome erforderlich. Wichtige Risikofaktoren für
erhöhte Mortalität und/oder terminale
Niereninsuffizienz sind neben der renalen Beteiligung per se eine bereits
zum Zeitpunkt der Diagnose deutlich eingeschränkte renale Funktion
einschliesslich initialer Dialysepflichtigkeit, eine hohe initiale
Aktivität der AAV gemessen am Birmingham Vaskulitis Activity Score,
aber auch kardiale und gastrointestinale Manifestationen, Infektionen,
Anämie sowie ein Alter von>65 Jahren. Histologisch ist der
Nachweis chronischer irreversibler glomerulärer und
tubulärer Läsionen in der Nierenbiopsie mit einer schlechten
Prognose im Hinblick auf die Nierenfunktion assoziiert. Basierend auf der
histopathologischen Klassifikation der ANCA-assoziierten Glomerulonephritis
(GN) ist der Befund einer sklerosierenden GN mit einer besonders
ungünstigen Prognose assoziiert, während die fokale GN sehr
selten zur terminalen Niereninsuffizienz führt. MPO-ANCA zeigen eine
Assoziation mit chronischen Läsionen in der Nierenbiopsie sowie
erhöhter Mortalität und erhöhtem Risiko für
terminale Niereninsuffizienz. Im Hinblick auf die pulmonale Beteiligung sind
alveoläre Hämorrhagie und interstitielle Lungenerkrankung
mit einer erhöhten Mortalität assoziiert. Bei EGPA wird die
Prognose entscheidend durch die Kardiomyopathie bestimmt. Risikofaktoren
für Rezidive weichen erheblich von denen für
Mortalität und terminale Niereninsuffizienz ab. Ein erhöhtes
Rezidivrisiko besteht bei Nachweis von PR3-ANCA, GPA und pulmonaler
Beteiligung. Auch bei granulomatösen Läsionen, Beteiligung
des oberen Respirationstraktes und kardiovaskulären Manifestationen
wird ein erhöhtes Rezidivrisiko beschrieben. Im Gegensatz zur
Assoziation einer initial schlechten Nierenfunktion mit Mortalität
und terminaler Niereninsuffizienz, wurde für Patienten mit initial
guter Nierenfunktion ein erhöhtes Rezidivrisiko gezeigt. Weitere
Risikofaktoren für Rezidive sind Staphylokokken-Besiedelung der
Nase, frühere Rezidive und ANCA-Positivität nach
Remissionsinduktion. Titeranstieg oder Wiederauftreten von ANCA zeigen nur
eine moderate Beziehung zum Rezidivrisiko. Der prädiktive Wert
für Rezidive ist offenbar bei bestimmten Subgruppen, wie bei
Patienten mit renaler Beteiligung und pulmonaler Hämorrhagie sowie
bei mit Rituximab-behandelten Patienten besser als bei Patienten mit
granulomatösen Manifestationen. Daher ist eine Therapieentscheidung
allein auf Basis der Entwicklung der ANCA-Titer nicht möglich.
Risikofaktoren für schwere Infektionen sind höher dosierte
und prolongierte Glukokortikoidtherapie, Leuko- und Lymphopenie,
höheres Lebenalter, Niereninsuffizienz und pulmonale Beteiligung.
Die Malignomrate insbesondere für Nicht-Melanom-Hauttumoren,
Harnblasenkarzinome und Leukämie ist bei AAV erhöht und
zeigt eine Assoziation mit hohen kumulativen Cyclophosphamiddosen. Da
insbesondere frühzeitige irreversible Organschäden die
Prognose bestimmen und Rezidive die Entwicklung irreversibler
Schäden treiben, sind frühestmögliche Diagnose und
Therapie sowie rasches Erkennen und Vermeiden von Rezidiven essentiell
für die Risikominimierung.
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Affiliation(s)
- Peter Oelzner
- Rheumatologie/Osteologie, Klinik für Innere Medizin
III, Universitätsklinikum Jena, Jena, Deutschland
| | - Gunter Wolf
- Nephrologie, Klinik für Innere Medizin III,
Universitätsklinikum Jena, Jena, Deutschland
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35
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Almaani S, Fussner LA, Brodsky S, Meara AS, Jayne D. ANCA-Associated Vasculitis: An Update. J Clin Med 2021; 10:jcm10071446. [PMID: 33916214 PMCID: PMC8037363 DOI: 10.3390/jcm10071446] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 12/28/2022] Open
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) represents a group of small vessel vasculitides characterized by granulomatous and neutrophilic tissue inflammation, often associated with the production of antibodies that target neutrophil antigens. The two major antigens targeted by ANCAs are leukocyte proteinase 3 (PR3) and myeloperoxidase (MPO). AAV can be classified into 3 categories based on patterns of clinical involvement: namely, granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA) and eosinophilic GPA (EGPA). Clinically, AAV involves many organ systems including the lungs, kidneys, skin, and nervous system. The prognosis of AAV has improved dramatically due to advances in the understanding of its pathogenesis and treatment modalities. This review will highlight some of the recent updates in our understanding of the pathogenesis, clinical manifestations, and treatment options in patients with AAV focusing on kidney involvement.
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Affiliation(s)
- Salem Almaani
- Division of Nephrology, The Ohio State University Wexner Medical Center, Columbus, OH 43201, USA
- Correspondence:
| | - Lynn A. Fussner
- Division of Pulmonary and Critical Care Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43201, USA;
| | - Sergey Brodsky
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43201, USA;
| | - Alexa S. Meara
- Division of Rheumatology, The Ohio State University Wexner Medical Center, Columbus, OH 43201, USA;
| | - David Jayne
- Department of Medicine, University of Cambridge, Cambridg CB2 0QQ, UK;
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36
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Wu T, Shen C, Zhong Y, Ooi JD, Zhou YO, Chen JB, Meng T, Xiao Z, Lin W, Ao X, Xiao X, Zhou Q, Xiao P. Differences between myeloperoxidase-antineutrophil cytoplasmic autoantibody (ANCA) and proteinase 3-ANCA associated vasculitis: A retrospective study from a single center in China. Exp Ther Med 2021; 21:561. [PMID: 33850533 PMCID: PMC8027729 DOI: 10.3892/etm.2021.9993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
In antineutrophil cytoplasmic autoantibody (ANCA)-associated vasculitides (AAV), the two major target antigens of ANCA are proteinase 3 (PR3) and myeloperoxidase (MPO). Evidence is accumulating that there are distinct differences between patients with PR3-AAV and those with MPO-AAV. In the present study, the clinicopathological features and prognosis of patients with PR3-AAV and MPO-AAV from a single center in China were retrospectively analyzed. A total of 212 Chinese patients with AAV were recruited in the present study; 189/212 (89.15%) patients were classified as having MPO-AAV and 23/212 (10.85%) patients as having PR3-AAV. Compared with those in the PR3-AAV group, patients in the MPO-AAV group were older and less frequently had ear, nose and throat or ophthalmic involvement. MPO-AAV patients had higher levels of serum creatinine and proteinuria at baseline. No significant difference was observed with regard to the pathological changes of the glomeruli and tubulointerstitium between the two groups. The probability of developing end-stage renal disease was significantly higher in patients with MPO-AAV compared with that in patients with PR3-AAV. There was no significant difference in the one-year patient survival rate between the two groups. However, differences in certain clinical characteristics and outcomes were observed between MPO-AAV and PR3-AAV patients. A large national investigation of AAV is required to confirm the concept that PR3-AAV and MPO-AAV are distinct disease entities.
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Affiliation(s)
- Ting Wu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Chanjuan Shen
- Department of Hematology, the Affiliated Zhuzhou Hospital Xiangya Medical College, Central South University, Zhuzhou, Hunan 412000, P.R. China
| | - Yong Zhong
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Joshua D Ooi
- Department of medicine, Centre for Inflammatory Diseases, Monash Medical Centre, Monash University, Clayton, Victoria 3168, Australia
| | - Ya-Ou Zhou
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Jin-Biao Chen
- Department of Medical Records and Information, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Ting Meng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Zhou Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Wei Lin
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xiang Ao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xiangcheng Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Qiaoling Zhou
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Ping Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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37
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Lim JH, Han MH, Kim YJ, Jeon Y, Jung HY, Choi JY, Cho JH, Kim CD, Kim YL, Lee H, Kim DK, Moon KC, Park SH. Histopathologic and clinicopathologic classifications of antineutrophil cytoplasmic antibody-associated glomerulonephritis: a validation study in a Korean cohort. Kidney Res Clin Pract 2021; 40:77-88. [PMID: 33789384 PMCID: PMC8041633 DOI: 10.23876/j.krcp.20.184] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/22/2020] [Indexed: 12/15/2022] Open
Abstract
Background Antineutrophil cytoplasmic antibodies (ANCA)-associated glomerulonephritis (AAGN) is a common cause of rapidly progressive glomerulonephritis and requires prompt and proper immunosuppressive therapy to improve renal prognosis. This study aimed to evaluate the predictive value of two different classifications for renal outcomes in Korean AAGN patients. Methods Ninety-two patients who were diagnosed with AAGN at two tertiary hospitals between 2004 and 2018 were retrospectively analyzed retrospectively. The histopathologic classification according to glomerular pathology and the clinicopathologic classification according to normal glomeruli ratio, degree of interstitial fibrosis/tubular atrophy, and baseline renal function were evaluated using the Cox proportional hazards model. Results Forty-five patients (48.9%) progressed to end-stage kidney disease (ESKD) during the observation period. The mean age was 61.0 ± 15.3 years, and most patients had myeloperoxidase-ANCA (93.5%). In the histopathologic classification, the best renal survival occurred in the focal class, whereas the sclerotic class had the worst renal survival (sclerotic class vs. focal class; adjusted hazard ratio [aHR], 5.05; 95% confidence interval [CI], 1.32–19.31; p = 0.018). The mixed class had intermediate renal outcomes (mixed class vs. focal class; aHR, 4.23; 95% CI, 1.23–14.58; p = 0.022). In the clinicopathologic classification, the high-risk group had poor renal outcomes compared with the low-risk group (aHR, 6.56; 95% CI, 1.25–34.26; p = 0.026), but renal outcomes did not differ between the low- and medium-risk groups. Conclusion In Korean AAGN patients, histopathologic and clinicopathologic classifications had predictive value for renal outcomes, especially in the sclerotic class or the high-risk group with higher risk of progression to ESKD despite treatment.
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Affiliation(s)
- Jeong-Hoon Lim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea
| | - Man-Hoon Han
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Yong-Jin Kim
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Yena Jeon
- Department of Statistics, Kyungpook National University, Daegu, Republic of Korea
| | - Hee-Yeon Jung
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Ji-Young Choi
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea
| | - Jang-Hee Cho
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Chan-Duck Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Yong-Lim Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Hajeong Lee
- Department of Internal Medicine, Seoul National University School of Medicine, Seoul, Republic of Korea.,Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University School of Medicine, Seoul, Republic of Korea.,Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kyung Chul Moon
- Department of Pathology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sun-Hee Park
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
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38
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Systematic Histological Scoring Reveals More Prominent Interstitial Inflammation in Myeloperoxidase-ANCA Compared to Proteinase 3-ANCA Glomerulonephritis. J Clin Med 2021; 10:jcm10061231. [PMID: 33809645 PMCID: PMC8061772 DOI: 10.3390/jcm10061231] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 12/15/2022] Open
Abstract
Background: Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a systemic vasculitis, most frequently presenting as microscopic polyangiitis (MPA) or granulomatosis with polyangiitis (GPA). Kidney involvement is a common and severe complication of ANCA AAV which is observed in a considerable subset of patients, mainly affecting glomeruli. However, tubulointerstitial lesions have also been described in ANCA glomerulonephritis (GN). Therefore, we aim to describe active and chronic tubulointerstitial lesions in ANCA GN subtypes by systematic scoring analogous to the Banff scoring system while also utilizing clinical and laboratory findings. Methods: A total of 49 kidney biopsies with ANCA GN were retrospectively included in a single-center cohort study between 2015–2020. Results: We report that MPO-ANCA GN is associated with more severe deterioration of kidney function independent of systemic markers of AAV disease activity, and is also associated with increased proteinuria in MPO-ANCA GN and a decreased fraction of normal glomeruli. Finally, MPO-ANCA GN showed distinct, active, and chronic tubulointerstitial lesions. Conclusion: New insights into the pathophysiology of both entities, as well as differences in the clinical presentation of MPO- versus PR3-ANCA GN, could potentially pave the way for more precise treatment regimens. Therefore, it is important to understand the differences in histopathological presentation, especially in yet underestimated active tubulointerstitial lesions of ANCA GN subtypes. This research could further improve our understanding of distinct pathophysiological mechanisms.
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39
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Trivioli G, Gopaluni S, Urban ML, Gianfreda D, Cassia MA, Vercelloni PG, Calatroni M, Bettiol A, Esposito P, Murtas C, Alberici F, Maritati F, Manenti L, Palmisano A, Emmi G, Romagnani P, Moroni G, Gregorini G, Sinico RA, Jayne DR, Vaglio A. Slowly progressive anti-neutrophil cytoplasmic antibody-associated renal vasculitis: clinico-pathological characterization and outcome. Clin Kidney J 2021; 14:332-340. [PMID: 33564436 PMCID: PMC7857823 DOI: 10.1093/ckj/sfaa139] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 05/25/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Although rapidly progressive glomerulonephritis is the main renal phenotype of anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), slow renal disease progression is sometimes observed. These forms have been rarely discussed; we analysed their prevalence, clinico-pathological characteristics and outcome. METHODS We screened patients with microscopic polyangiitis (MPA) and granulomatosis with polyangiitis followed at seven referral centres and selected those with estimated glomerular filtration rate (eGFR) reduction <50% over a 6-month period preceding diagnosis. Data regarding patient features and response to treatment were retrieved. RESULTS Of 856 patients, 41 (5%) had slowly progressive renal AAV. All had MPA and all but one was P-ANCA/myeloperoxidase (MPO) ANCA-positive. At diagnosis, the median age was 70 years [interquartile range (IQR) 64-78] and extra-renal manifestations were absent or subclinical (interstitial lung lesions in 10, 24%). The median (IQR) eGFR was 23 mL/min/1.73 m2 (15-35); six patients (15%) had started renal replacement therapy (RRT). All had proteinuria (median 1180 mg/24 h, IQR 670-2600) and micro-haematuria. Main histologic findings were extracapillary proliferation at chronic stages and glomerulosclerosis; following Berden's classification, 6/28 biopsies (21%) were 'focal', 1/28 (4%) 'crescentic', 9/28 (32%) 'mixed' and 12/28 (43%) 'sclerotic'. At last follow-up (median 32 months, IQR 12-52), 20/34 patients (59%) treated with immunosuppression had eGFR improvement >25% as compared with diagnosis, while 4/34 (12%) had started RRT. CONCLUSIONS AAV may present with slow renal disease progression; this subset is hallmarked by advanced age at diagnosis, positive MPO-ANCA, subclinical interstitial lung lesions and chronic damage at kidney biopsy. Partial renal recovery may occur following immunosuppression.
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Affiliation(s)
- Giorgio Trivioli
- Department of Biomedical Experimental and Clinical Sciences “Mario Serio”, University of Firenze, and Nephrology Unit, Meyer Children’s Hospital, Firenze, Italy
| | | | - Maria L. Urban
- Department of Experimental and Clinical Sciences, University of Firenze, Firenze, Italy
| | | | | | | | | | - Alessandra Bettiol
- Department of Neurosciences, Psychology, Pharmacology and Child Health, University of Firenze, Firenze, Italy
| | - Pasquale Esposito
- Department of Internal Medicine and Medical Specialties, University of Genova, Genova, Italy
| | - Corrado Murtas
- Nephrology Unit, Nephrology Unit, ASSL Oristano, ATS Sardegna, Oristano, Italy
| | - Federico Alberici
- Nephrology Unit, ASST Spedali Civili, Brescia, Italy
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Federica Maritati
- Nephrology, Dialysis and Transplant Unit, Ospedali Riuniti, Ancona, Italy
| | - Lucio Manenti
- Nephrology Unit, Parma University Hospital, Parma, Italy
| | | | - Giacomo Emmi
- Department of Experimental and Clinical Sciences, University of Firenze, Firenze, Italy
| | - Paola Romagnani
- Department of Biomedical Experimental and Clinical Sciences “Mario Serio”, University of Firenze, and Nephrology Unit, Meyer Children’s Hospital, Firenze, Italy
| | | | | | | | | | - Augusto Vaglio
- Department of Biomedical Experimental and Clinical Sciences “Mario Serio”, University of Firenze, and Nephrology Unit, Meyer Children’s Hospital, Firenze, Italy
- Correspondence to: Augusto Vaglio; E-mail:
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40
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Petrakis I, Androvitsanea A, Stratakis S, Daphnis E, Stylianou K. Intense immunostaining of heat shock protein 70 within renal interstitium associates with long-term renal survival in an ANCA-associated vasculitis cohort. Cell Stress Chaperones 2021; 26:51-65. [PMID: 32876904 PMCID: PMC7736385 DOI: 10.1007/s12192-020-01151-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/17/2020] [Accepted: 08/10/2020] [Indexed: 10/23/2022] Open
Abstract
In anti-neutrophilic cytoplasmic antibody (ANCA)-associated vasculitis (AAV) genetic predisposition, ANCA autoantibodies, neutrophil extracellular traps (NETs), complement activation, and toll-like receptor signaling are implicated in AAV pathogenesis. Heat shock proteins (HSPs), a highly conserved group of small-sized molecular chaperones, take part in protein folding during cellular stress. Although HSPs were initially observed intracellularly, it has been shown that they can be secreted in the extracellular space and modulate the immune response in various autoimmune diseases including AAV. The scope of the present study is to investigate the role of heat shock protein 60 (HSP60) and 70 (HSP70) in the long renal effects in an ANCA vasculitis cohort. In this cohort of ANCA-associated vasculitis, 29 patients were followed up over 20 years. At diagnosis, immunohistochemistry was performed for HSP60 and HSP70 within the various nephron compartments. Higher renal HSP60 expression was associated with increased interstitial inflammatory infiltrates at diagnosis, while HSP70 expression was associated with a greater extent of interstitial fibrosis at diagnosis. Notably, intense tissue expression of HSP70 at the time of biopsy was associated with a worsened kidney survival. Renal HSP70 expression was associated with poor renal outcomes during long-term follow-up. This finding may indicate a role of HSPs in renal disease progression in ANCA vasculitis. Further validating studies are needed to verify a causative association between HSP70 expression and renal outcomes in ANCA-associated vasculitis.
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Affiliation(s)
- Ioannis Petrakis
- Department of Nephrology, Saarland University Medical Center, Homburg, Saar, Germany.
| | | | - Stavros Stratakis
- Department of Nephrology, Heraclion University Hospital, Crete, Greece
| | - Eugene Daphnis
- Department of Nephrology, Heraclion University Hospital, Crete, Greece
| | - Kostas Stylianou
- Department of Nephrology, Heraclion University Hospital, Crete, Greece
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41
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Khan AJJ, Khan NAJ. Renal limited ANCA-positive vasculitis: a rare manifestation of a rare disease. J Investig Med High Impact Case Rep 2020; 8:2324709620974874. [PMID: 33238733 PMCID: PMC7705769 DOI: 10.1177/2324709620974874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pauci-immune crescentic glomerulonephritis is the most common variant of rapidly
progressive glomerulonephritis, accounting for approximately 80% of total cases. Most of
the cases are associated with the presence of anti-neutrophil cytoplasmic antibody (ANCA)
and are usually referred to as ANCA-associated vasculitis. A 68-year-old male with no
previous renal history presented with complaints of shortness of breath, cough, and
bilateral leg swelling for 2 weeks. Initial workup was significant for creatinine elevated
at 2.9 mg/dL, blood urea nitrogen at 65 mg/dL, and glomerular filtration rate of 27
mL/min. Further workup was unremarkable for any significant abnormality. Subsequently
patient’s kidney function worsened, and temporary hemodialysis was started. Kidney biopsy
was performed, which later came back significant for necrotizing arteritis, multifocal,
with focal necrotizing and crescentic glomerulonephritis, pauci-immune type. High-dose
corticosteroids were administered, and good clinical response was noticed. This is a very
rare case of renal limited pauci-immune crescentic glomerulonephritis with annual
incidence of 7 to 10 cases per million every year in the United States. The absence of
involvement of other organs makes our case even rarer. Mortality is as high as 90% in
untreated patients and aggressive therapy with glucocorticoids and cyclophosphamide or
rituximab are the mainstay of treatment. The presence of significant renal impairment in
the absence of other organs involvement in our patient makes it a very unique presentation
of ANCA-positive vasculitis.
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42
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Duong K, Etienne S, Collazo-Maldonado R, Lytvak I. Thrombotic Microangiopathy and Venous Thrombosis in a Patient With Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis. Cureus 2020; 12:e11665. [PMID: 33391903 PMCID: PMC7769722 DOI: 10.7759/cureus.11665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a systemic pauci-immune small vessel vasculitis. Its various presentations make AAV diagnosis challenging. Here, we present a case of AAV with thrombotic microangiopathy (TMA) and deep venous thrombosis (DVT). An 82-year-old Hispanic woman presented to the emergency department with malaise, lower extremity pain, and oliguria for three days. Her vital signs were normal, and her physical examination was unremarkable. The initial laboratory revealed thrombocytopenia (18 x 103/µL), elevated creatinine (8.35 mg/dL), high lactic acid dehydrogenase (1627.5 U/L), an international normalized ratio of 1.6, and an activated partial thromboplastin time of 49 seconds. Urinalysis showed microscopic hematuria and proteinuria, and peripheral smear revealed schistocytes. She was admitted with concern for TMA. Further workup revealed an antinuclear antibody titer of 1:80, an ADAMTS13 level of 62%, a rheumatoid factor level of 151.7 IU/L, and myeloperoxidase (MPO)-ANCA level of 173 AU/mL. A computed tomography scan of the chest/abdomen/pelvis revealed pulmonary fibrosis and multifocal consolidations. She was also found to have extensive DVT of the lower extremities. Renal biopsy revealed early changes of TMA with one cellular crescent. She was diagnosed with AAV based on the kidney and lung findings, as well as the high titer MPO-ANCA. Her platelet count and creatinine improved significantly following treatment with plasma exchange, steroids, and rituximab. Unfortunately, she was then found to have an acute bowel perforation and expired. Even though typically rare, an increased incidence of venous thromboembolism (VTE) and TMA has been reported in patients with AAV. Its prompt recognition and treatment by clinicians are critical to mitigate the unfavorable outcomes from this condition.
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Affiliation(s)
- Khanh Duong
- Department of Internal Medicine, Methodist Dallas Medical Center, Dallas, USA
| | - Samantha Etienne
- Department of Internal Medicine, Methodist Dallas Medical Center, Dallas, USA
| | | | - Irina Lytvak
- Department of Pathology, Methodist Dallas Medical Center, Dallas, USA
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43
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Alvarez JC, Rodelo J, Arias LF, Álvarez C. Immunoglobulin A Nephropathy With Extracapillary Proliferation and Positive Anti-Neutrophil Cytoplasmic Antibodies: A Rare Cause of Dual Glomerulonephritis. Cureus 2020; 12:e11068. [PMID: 33224662 PMCID: PMC7676950 DOI: 10.7759/cureus.11068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The coexistence of immunoglobulin A (IgA) nephropathy and associated pauci-immune anti-neutrophil cytoplasmic antibody (ANCA) glomerulonephritis represents a rare concurrence of two common forms of glomerulonephritis; the pathogenesis, treatment, and prognosis of this dual glomerulopathy are not well described. This illustrative case can present this association in an HIV-positive patient and how despite the coexistence of these two entities, the patient had control of his kidney disease with low doses of steroids, contrary to the different reports of cases in the literature in which the treatment is often more aggressive. In this case report, we review the literature on this dual glomerulonephritis and confront clinical and treatment aspects regarding the different clinical cases reported in the databases.
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Affiliation(s)
- Jose C Alvarez
- Internal Medicine, University of Antioquia, Medellin, COL
| | - Joaquin Rodelo
- Nephrology, Nephrology Unit, San Vicente Foundation University Hospital, Medellin, COL
| | - Luis F Arias
- Pathology, University of Antioquia, Medellin, COL
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44
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ANCA-associated nephritis without crescent formation has atypical clinicopathological features: a multicenter retrospective study. Clin Exp Nephrol 2020; 24:999-1006. [PMID: 32651749 DOI: 10.1007/s10157-020-01925-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 06/25/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although crescentic glomerulonephritis is a hallmark of ANCA-associated nephritis, the clinicopathological features of ANCA-associated nephritis without crescent formation remain to be elucidated. METHODS We enrolled 146 Japanese ANCA-associated vasculitis (AAV) patients subjected to renal biopsy in 16 hospitals from 2001 to 2018, and compared those with and without crescent formation (C + and C- groups). The primary endpoint was end-stage renal disease (ESRD) and/or death. RESULTS C- group comprised 25 (17.1%) subjects. They had better renal function at the time of renal biopsy [estimated glomerular filtration rate (eGFR); median 41.7 vs 27.5 ml/min/1.73 m2, p < 0.01] with minor urinary abnormalities but had a higher serum C-reactive protein level (8.8 vs 5.4 mg/dl, p = 0.01) and frequency of extra-renal lesions of AAV (76.0% vs 48.8%, p = 0.02) than C + group. Pathologically, C- group had a higher frequency of arteritis (40.0% vs 16.5%, p < 0.01). Kaplan-Meier method with log-rank tests showed no significant difference in renal and life prognosis combined, regardless of crescent formation. Multivariate Cox regression analysis revealed baseline eGFR, sclerotic class, and extra-renal lesions to be risk factors of ESRD and death combined. Competing risk analysis showed baseline eGFR and sclerotic class to be associated with ESRD, whereas baseline eGFR and extra-renal lesions were associated with death. CONCLUSION ANCA-associated nephritis without crescent formation had different clinicopathological features from those with crescent formation, suggesting an atypical subtype of ANCA-associated nephritis. Despite the better renal function at the time of renal biopsy, these results suggest that this subtype requires especially careful attention, especially in the presence of extra-renal involvement.
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Usefulness of vasculitis biomarkers in the era of the personalized medicine. Autoimmun Rev 2020; 19:102514. [DOI: 10.1016/j.autrev.2020.102514] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 12/05/2019] [Indexed: 02/07/2023]
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Huang L, Shen C, Zhong Y, Ooi JD, Zhou YO, Chen JB, Wu T, Meng T, Xiao Z, Lin W, Ao X, Xiao X, Zhou Q, Xiao P. Risk factors for treatment resistance and relapse of Chinese patients with MPO-ANCA-associated vasculitis. Clin Exp Med 2020; 20:199-206. [PMID: 32078076 DOI: 10.1007/s10238-020-00614-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/07/2020] [Indexed: 12/16/2022]
Abstract
Identification of risk factors for treatment resistance and relapse would be crucial to personalization therapy in patients with myeloperoxidase (MPO)-anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (MPO-AAV). Current evidence with regard to the risk factors for treatment resistance and relapse remains limited and inconclusive. We aimed to assess the predictors for treatment resistance and relapse in a single-center cohort of Chinese patients with MPO-AAV in this study. In total, 184 patients with MPO-AAV were included. Treatment resistance occurred in 64 (34.9%) of 184 patients and was positively associated with lung involvement (odds ratio [OR] 3.581, 95% CI 1.137-11.278, p = 0.029) and the initial serum creatinine level (OR 1.004, 95% CI 1.001-1.007, p = 0.010) and was negatively associated with platelet (OR 0.992, 95% CI 0.987-0.998, p = 0.007) and serum C3 levels (OR 0.998, 95% CI 0.996-0.999, p = 0.004). Relapse occurred in 29 (24.17%) of 120 patients in whom remission was achieved and was independently associated with lung involvement (hazard ratio [HR] 4.595, 95% CI 1.272-16.599, p = 0.020) and cardiovascular involvement (HR 3.689, 95% CI 1.237-11, p = 0.019,). The serum globulin was demonstrated to be negatively associated with relapse independently (HR 0.876; 95% CI 0.806-0.953; p = 0.002). This retrospective study of MPO-AAV patients in a single Chinese center suggests that treatment resistance was positively associated with lung involvement and the initial serum creatinine level and was negatively associated with platelet and serum C3 levels. Lung involvement and cardiovascular involvement were associated with an increased risk of relapse, while the higher serum globulin was demonstrated to be in association with a decreased risk of relapse.
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Affiliation(s)
- Li Huang
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Chanjuan Shen
- Department of Hematology, The Affiliated Zhuzhou Hospital Xiangya Medical College, Central South University, Zhuzhou, Hunan Province, China
| | - Yong Zhong
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
| | - Joshua D Ooi
- Centre for Inflammatory Diseases, Monash University, Clayton, VIC, 3168, Australia
| | - Ya-Ou Zhou
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Jin-Biao Chen
- Department of Medical Records and Information, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Ting Wu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Ting Meng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhou Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Wei Lin
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xiang Ao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xiangcheng Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Qiaoling Zhou
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Ping Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
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Weiner M, Bjørneklett R, Hrušková Z, Mackinnon B, Poulton CJ, Sindelar L, Mohammad AJ, Eriksson P, Gesualdo L, Geetha D, Crnogorac M, Jayne D, Hogan SL, Geddes C, Tesar V, Aasarød K, Segelmark M. Proteinase-3 and myeloperoxidase serotype in relation to demographic factors and geographic distribution in anti-neutrophil cytoplasmic antibody-associated glomerulonephritis. Nephrol Dial Transplant 2020; 34:301-308. [PMID: 29718465 DOI: 10.1093/ndt/gfy106] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/21/2018] [Indexed: 01/29/2023] Open
Abstract
Background In anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis, antigen specificity varies between myeloperoxidase (MPO) and proteinase 3 (PR3). This has been reported to vary in relation to age, gender, geography and extrarenal manifestations. However, studies are difficult to compare as criteria for inclusion vary. The aim of this study was to investigate the relationship between ANCA serotype, latitude, ultraviolet (UV) radiation levels, age, gender and renal function at diagnosis in a large study with uniform inclusion criteria. Methods Patients with biopsy-proven ANCA-associated glomerulonephritis were identified from regional or nationwide registries in 14 centres in Norway, Sweden, the UK, the Czech Republic, Croatia, Italy and the USA during the period 2000-13. UV radiation levels for 2000-13 in Europe were obtained from the Swedish Meteorological and Hydrological Institute. Results A total of 1408 patients (45.2% PR3-ANCA) were included in the study. In univariable analysis, PR3-ANCA was significantly associated with male gender {odds ratio [OR] 2.12 [95% confidence interval (CI) 1.71-2.62]}, younger age [OR per year 0.97 (95% CI 0.96-0.98)] and higher glomerular filtration rate [OR per mL/min 1.01 (95% CI 1.01-1.02); P < 0.001] at diagnosis but not with latitude or UV radiation. In multivariable logistic regression analysis, latitude and UV radiation also became significant, with higher odds for PR3-ANCA positivity at northern latitudes/lower UV radiation levels. However, the latitudinal difference in MPO:PR3 ratio is smaller than differences previously reported concerning microscopic polyangiitis and granulomatosis with polyangiitis. Conclusions The ratio between PR3-ANCA and MPO-ANCA varies in glomerulonephritis with respect to age, gender, renal function and geographic latitude/UV radiation levels.
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Affiliation(s)
- Maria Weiner
- Department of Nephrology and Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Rune Bjørneklett
- Renal Research Group, Department of Clinical Medicine, University of Bergen, Bergen, Norway.,Emergency Care Clinic, Haukeland University Hospital, Bergen, Norway
| | - Zdenka Hrušková
- Department of Nephrology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Bruce Mackinnon
- Glasgow Renal and Transplant Unit, Queen Elizabeth University Hospital, Glasgow, UK
| | - Caroline J Poulton
- University of North Carolina School of Medicine, Chapel Hill, NC, USA.,Division of Nephrology and Hypertension, Department of Medicine UNC Kidney Center, Chapel Hill, NC, USA
| | - Leo Sindelar
- Department of Nephrology and Medical and Health Sciences, Linköping University, Linköping, Sweden.,Glasgow Renal and Transplant Unit, Queen Elizabeth University Hospital, Glasgow, UK
| | - Aladdin J Mohammad
- Department of Clinical Sciences, Section of Rheumatology, Lund University, Lund, Sweden.,Department of Medicine, University of Cambridge, Cambridge, UK
| | - Per Eriksson
- Department of Rheumatology and Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Loreto Gesualdo
- Nephrology, Dialysis and Transplantation Unit, University of Bari, Bari, Italy
| | - Duvuru Geetha
- Division of Nephrology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Matija Crnogorac
- Department of Nephrology and Dialysis, Dubrava University Hospital, Zagreb, Croatia
| | - David Jayne
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Susan L Hogan
- University of North Carolina School of Medicine, Chapel Hill, NC, USA.,Division of Nephrology and Hypertension, Department of Medicine UNC Kidney Center, Chapel Hill, NC, USA
| | - Colin Geddes
- Glasgow Renal and Transplant Unit, Queen Elizabeth University Hospital, Glasgow, UK
| | - Vladimir Tesar
- Department of Nephrology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Knut Aasarød
- Department of Nephrology, Saint Olavs University Hospital, Trondheim, Norway.,Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Mårten Segelmark
- Department of Nephrology and Medical and Health Sciences, Linköping University, Linköping, Sweden
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Kronbichler A, Jayne DRW. Estimating the epidemiology of anti-neutrophil cytoplasm antibody-associated renal vasculitis and the role of histologic chronicity in predicting renal outcomes. Nephrol Dial Transplant 2020; 34:1429-1432. [PMID: 30649435 DOI: 10.1093/ndt/gfy402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Indexed: 12/20/2022] Open
Affiliation(s)
- Andreas Kronbichler
- Department of Internal Medicine IV-Nephrology and Hypertension, Medical University Innsbruck, Innsbruck, Austria
| | - David R W Jayne
- Vasculitis and Lupus Clinic, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK.,Department of Medicine, University of Cambridge, Cambridge, UK
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Li ZY, Wang X, Xia X, Yu XJ, Wang SX, Chen W, Chen M, Zhao MH. An overlap of antineutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis and IgG4-related kidney disease. Clin Chim Acta 2019; 501:12-19. [PMID: 31805271 DOI: 10.1016/j.cca.2019.11.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 11/14/2019] [Accepted: 11/21/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND We investigated the characteristics of antineutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis (ANCA-GN) and immunoglobulin G4 (IgG4)-related kidney disease (IgG4-RKD) overlap syndrome. METHODS This is a 2-center study with 19 patients. RESULTS Fifteen patients were classified as microscopic polyangiitis (MPA). The initial serum creatinine levels were 320.9 ± 191.4 μmol/l and the BVAS was 19.7 ± 7.4 at diagnosis. Hematuria was absent or slight in 13 (68.4%) cases. Renal histology of these patients revealed concurrent ANCA-GN and IgG4-RKD. Regarding the histological classification of ANCA-GN, 9 (47.4%), 8 (42.1%), 1 (5.3%) and 1 (5.3%) patients were classified as focal, crescentic, mixed and sclerotic ANCA-GN, respectively. MPO-ANCA could be detected in 17/19 (89.5%) patients. IgG subclasses of MPO-ANCA were tested in 10 patients, and all were positive for IgG4-MPO-ANCA. In patients with combined ANCA-GN and IgG4-RKD, the percentage of positive IgG1-MPO-ANCA was significantly lower than the control group of 20 AAV patients without IgG4-RKD (P = 0.002), and the percentage of positive IgG4-MPO-ANCA was higher than the control group, but this difference was not statistically significant (P = 0.14). CONCLUSIONS ANCA-GN and IgG4-RKD overlap syndrome concerned mainly MPO-ANCA positive patients. The IgG subclass analysis of MPO-ANCA showed lower percentage of IgG1 subclass. The association between ANCA-GN and IgG4-RKD is possible and represents a special entity.
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Affiliation(s)
- Zhi-Ying Li
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing 100034, China
| | - Xu Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing 100034, China
| | - Xi Xia
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Nephrology, National Health Commission of China and Guangdong Province, Guangzhou 510080, China
| | - Xiao-Juan Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing 100034, China
| | - Su-Xia Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing 100034, China; Laboratory of Electron Microscopy, Pathological Centre, Peking University First Hospital, Beijing 100034, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Nephrology, National Health Commission of China and Guangdong Province, Guangzhou 510080, China
| | - Min Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing 100034, China.
| | - Ming-Hui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing 100034, China; Peking-Tsinghua Center for Life Sciences, Beijing 100034, China
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Wojciechowska J, KręCicki T. Clinical characteristics of patients with granulomatosis with polyangiitis and microscopic polyangiitis in ENT practice: a comparative analysis. ACTA ACUST UNITED AC 2019; 38:517-527. [PMID: 30623897 PMCID: PMC6325653 DOI: 10.14639/0392-100x-1776] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/24/2017] [Indexed: 01/19/2023]
Abstract
ENT manifestations are commonly observed in patients with small vessel vasculitis (SVV). The main aim of this study was to analyse and present the clinicopathological characteristics of individuals with SVV emphasising otorhinolaryngological symptoms. This study evaluated 64 patients, 41 with granulomatosis with polyangiitis (GPA) and 23 with microscopic polyangiitis (MPA). Herein, we compare the clinicopathologic features of GPA and MPA. The average age at diagnosis was 50.2 and 56.2 years, for GPA and MPA, respectively. 57 patients (89%) were antineutrophil cytoplasmic antibody (ANCA) positive, 34 (59.6%) for anti-proteinase 3 (PR3)-ANCA and 21 (36.8%) for myeloperoxidase (MPO)-ANCA. 7 patients (10.9%) were ANCA negative. The most commonly affected organs were lungs (76.56%), ear, nose, throat (ENT) (75%) and kidneys (73.44%). ENT disorders mainly appeared as chronic rhinosinusitis and epistaxis and preceded SVV diagnosis by an average 14.4 months. In the majority of patients, ENT disorders were the first symptoms of SVV and preceded its systemic transformation. Pulmonary, ENT and nervous manifestations were more common in GPA, whereas the prevalence of renal, gastrointestinal, cutaneous, cardiovascular and ocular disorders was higher in MPA. The results of our study emphasise the high prevalence of ENT symptoms in patients with SVV, especially in those with GPA. We highlight the significant role of the otorhinolaryngologist in early SVV diagnosis and management. Any patient with persistent ENT symptoms or ENT dysfunctions not responding to standard otorhinolaryngological treatment should be precisely and rapidly evaluated for the presence of systemic dysfunctions (especially renal and pulmonary). Realising the differences and similarities between GPA and MPA is crucial in undelayed SVV diagnosis and proper treatment.
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Affiliation(s)
- J Wojciechowska
- Department and Clinic of Otolaryngology, Head and Neck Surgery, Wrocław Medical University Hospital, Borowska, Poland
| | - T KręCicki
- Department and Clinic of Otolaryngology, Head and Neck Surgery, Wrocław Medical University Hospital, Borowska, Poland
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