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Muhammad A, Xiao Z, Lin W, Zhang Y, Meng T, Ning J, Xu H, Tang R, Xiao X. Acute interstitial nephritis caused by ANCA-associated vasculitis: a case based review. Clin Rheumatol 2024; 43:1227-1244. [PMID: 37932622 DOI: 10.1007/s10067-023-06798-z] [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: 08/28/2023] [Revised: 09/26/2023] [Accepted: 10/09/2023] [Indexed: 11/08/2023]
Abstract
Antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV) typically manifests as rapidly progressive glomerulonephritis with crescent formation. In this report, we present a local case of myeloperoxidase (MPO)-AAV-associated acute interstitial nephritis (AIN), showing slight pauci-immune glomerulonephritis and positive MPO-ANCA. This case is characterized by foot process effacement of podocytes in the glomerulus, a favorable prognosis, and an absence of crescentic formation. To further understand this condition, we conducted a comprehensive literature search on Google Scholar and PubMed, employing both free text words and MeSH terms related to "AAV and AIN." This search yielded 24 cases, which we analyzed for their clinical features, laboratory findings, renal pathological characteristics, and therapeutic outcomes. AAV-associated interstitial nephritis predominantly affects elderly patients and is often associated with anemia, proteinuria, hematuria, and nonspecific manifestations, including fever, anorexia, fatigue, edema, and weight loss. Most of the cases in our review were MPO-ANCA-positive and exhibited isolated interstitial inflammation. These patients typically presented with relatively lower levels of serum creatinine, 24-h urine protein levels, and MPO-ANCA titers. All patients in our study received immunosuppressive therapy, including glucocorticoids, immunosuppressants, and rituximab, with the majority achieving clinical remission. Isolated AIN in the context of AAV is a rare occurrence, but it displays distinct clinical, laboratory, and pathological features. Patients with this presentation show a positive response to immunosuppressive treatment. Nevertheless, the establishment of definitive therapy guidelines for AAV-associated AIN remains uncertain and necessitates further investigation to develop comprehensive treatment guidelines. AIN, particularly when lacking typical glomerulus lesions, may represent a novel subgroup within MPO-AAV warranting additional research and clinical attention. Key Points • This study contributes valuable scientific insights by highlighting that MPO-AAV-associated interstitial nephritis, even without crescentic formation, can exhibit podocyte foot process effacement and respond well to treatment. • The presence of AIN, independent of crescentic glomerulonephritis, suggests the potential emergence of a new subclass within MPA-AAV. • Notably, some cases of MPO-AAV-associated AIN may present with normal levels of Scr (Table 5, cases 5, 6, and 17). • This observation highlights the importance of considering renal biopsy, diagnosis, and therapy in a timely manner to prevent the development of chronic kidney disease (CKD).
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Affiliation(s)
- Amir Muhammad
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Zhou Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Wei Lin
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Yingli Zhang
- Department of Nephrology, Third Hospital of Changsha, Changsha, 410015, China
| | - Ting Meng
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Jianping Ning
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Hui Xu
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Rong Tang
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
| | - Xiangcheng Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
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Nishioka K, Yamaguchi S, Hashiguchi A, Yoshimoto N, Tajima T, Yasuda I, Uchiyama K, Kaneko K, Aso M, Yoshino J, Monkawa T, Kanda T, Hayashi K, Itoh H. Antineutrophil cytoplasmic antibody-associated vasculitis predominantly manifesting tubulointerstitial nephritis: A case report. SAGE Open Med Case Rep 2023; 11:2050313X231197324. [PMID: 37663153 PMCID: PMC10474789 DOI: 10.1177/2050313x231197324] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/09/2023] [Indexed: 09/05/2023] Open
Abstract
The common histopathology of antineutrophil cytoplasmic antibody-associated vasculitis comprises pauci-immune crescentic glomerulonephritis with concomitant tubulointerstitial nephritis. Tubulointerstitial nephritis in the absence of glomerular involvement in patients with antineutrophil cytoplasmic antibody-associated vasculitis is uncommon. We report a case of antineutrophil cytoplasmic antibody-associated vasculitis-associated acute kidney injury manifesting as tubulointerstitial nephritis without glomerulonephritis. A 75-year-old woman with fever, cough, and myalgia developed kidney dysfunction with inflammatory reactions and tubular-type proteinuria, without glomerular hematuria. A kidney biopsy revealed tubulointerstitial nephritis with arteritis. We ruled out important underlying etiologies of tubulointerstitial nephritis, including infection, drug reactions, and autoimmune diseases. Since chest high-resolution computed tomography demonstrated mild interstitial pneumonia in bilateral lower lung fields, myeloperoxidase antineutrophil cytoplasmic antibody was measured and found to be positive. Therefore, we diagnosed the patient with antineutrophil cytoplasmic antibody-associated vasculitis-associated tubulointerstitial nephritis but not glomerulonephritis, and interstitial pneumonia. The patient's kidney function and symptoms markedly improved with prednisolone treatment. Clinicians should maintain high-level vigilance for antineutrophil cytoplasmic antibody-associated vasculitis as a possible underlying component of tubulointerstitial nephritis, particularly when kidney function deteriorates with tubulointerstitial injuries without glomerular features.
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Affiliation(s)
- Ken Nishioka
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shintaro Yamaguchi
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Akinori Hashiguchi
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Norifumi Yoshimoto
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takaya Tajima
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Itaru Yasuda
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kiyotaka Uchiyama
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kenji Kaneko
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mitsuhiro Aso
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Jun Yoshino
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Toshiaki Monkawa
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Medical Education Center, Keio University School of Medicine, Tokyo, Japan
| | - Takeshi Kanda
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kaori Hayashi
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Itoh
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Uysal C, Yilmaz T, Kocyigit H, Akgun H, Sipahioglu MH. An unusual form of kidney injury without glomerulonephritis in microscopic polyangiitis: a case report. BMC Nephrol 2023; 24:84. [PMID: 37003978 PMCID: PMC10065995 DOI: 10.1186/s12882-023-03134-0] [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: 05/14/2022] [Accepted: 03/21/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND Microscopic polyangiitis (MPA), a kind of antineutrophil cytoplasmic autoantibody associated vasculitis (AAV), predominantly affects small-sized vessels. MPA is a significant cause of the pulmonary-renal syndrome. Pauci-immune necrotizing and crescentic glomerulonephritis is the typical renal histological feature of AAV. Tubulointerstitial lesions may occur and mostly form with inflammatory cell infiltration in the interstitium. However, a few cases reported only tubulointerstitial involvement without glomerular lesions in patients with MPA. CASE PRESENTATION We present an MPA case, a 70-year-old male patient diagnosed with acute kidney injury accompanying the dialysis requirement. Only acute tubulointerstitial nephritis was revealed in kidney biopsy without evidence of glomerular injury. Also, interstitial pulmonary fibrosis was determined on computerized tomography, and myeloperoxidase antineutrophil cytoplasmic autoantibody was positive. Consequently, we have considered the main diagnosis as MPA. We did not prefer a standard tubulointerstitial nephritis treatment regimen due to the presence of life-threatening systemic vasculitis. Treatment was established like crescentic glomerulonephritis. Induction therapy consisted of pulse steroid, cyclophosphamide, and plasmapheresis. Unfortunately, severe SARS-CoV-2 infection caused death during induction therapy in this case. CONCLUSIONS The lack of glomerular injury and solely interstitial inflammation is atypical regarding AAV involvement in the kidney. This diversity might be initially considered as only a simple histological elaboration. However, it is a significant entity for guiding the treatment of AAV.
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Affiliation(s)
- Cihan Uysal
- Department of Nephrology, Erciyes University Medical School, Dede Efendi Sreet, Köşk District, 38030, Melikgazi, Kayseri, Turkey.
| | - Tugba Yilmaz
- Department of Nephrology, Erciyes University Medical School, Dede Efendi Sreet, Köşk District, 38030, Melikgazi, Kayseri, Turkey
| | - Hafsa Kocyigit
- Department of Internal Medicine, Kayseri State Hospital, Kayseri, Turkey
| | - Hulya Akgun
- Department of Pathology, Erciyes University Medical School, Kayseri, Turkey
| | - Murat Hayri Sipahioglu
- Department of Nephrology, Erciyes University Medical School, Dede Efendi Sreet, Köşk District, 38030, Melikgazi, Kayseri, Turkey
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Yoshimura Y, Watanabe S, Yamanouchi M, Ikuma D, Mizuno H, Sekine A, Hasegawa E, Suwabe T, Kono K, Kinowaki K, Ohashi K, Ubara Y, Sawa N. Tocilizumab Attenuates Anti-neutrophil Cytoplasmic Antibody-associated Nephritis Occurring During Abatacept and Adalimumab Therapy for Rheumatoid Arthritis: A Case Report. Intern Med 2022. [PMID: 36418100 PMCID: PMC10400383 DOI: 10.2169/internalmedicine.0858-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We encountered an 86-year-old Japanese woman who presented with proteinuria (0.4 g/day) and hematuria (red blood cell sediment >100/high-power field), a decreased renal function (serum creatinine, 1.51 mg/dL), and elevated myeloperoxidase anti-neutrophil cytoplasmic antibody (MPO-ANCA) levels (231 IU/mL) during treatment of rheumatoid arthritis with abatacept (a CTLA-4 agent) and adalimumab (a tumor necrosis factor-α agent). A kidney biopsy showed pauci-immune necrotizing glomerulonephritis, and ANCA-associated vasculitis was diagnosed. Treatment with tocilizumab (an interleukin 6 receptor antibody) monotherapy resulted in the improvement of renal findings and normalization of rheumatoid arthritis disease activity and serum ANCA levels. Tocilizumab can also suppress ANCA-associated vasculitis.
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Affiliation(s)
- Yusuke Yoshimura
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Shun Watanabe
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Masayuki Yamanouchi
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Daisuke Ikuma
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Hiroki Mizuno
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Akinari Sekine
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Eiko Hasegawa
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Tatsuya Suwabe
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Kei Kono
- Department of Pathology, Toranomon Hospital, Japan
| | | | - Kenichi Ohashi
- Department of Pathology, Toranomon Hospital, Japan
- Department of Human Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Yoshifumi Ubara
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
| | - Naoki Sawa
- Nephrology Center + Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
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Baier E, Tampe D, Kluge IA, Hakroush S, Tampe B. Implication of platelets and complement C3 as link between innate immunity and tubulointerstitial injury in renal vasculitis with MPO-ANCA seropositivity. Front Immunol 2022; 13:1054457. [PMID: 36439156 PMCID: PMC9692128 DOI: 10.3389/fimmu.2022.1054457] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a potentially life-threatening systemic small-vessel vasculitis that is characterized by pauci-immune glomerulonephritis, depicting in turn a major denominator of AAV mortality. It is well established that AAV patients feature an increased risk of developing thrombotic events, and platelets are activated in AAV patients being triggered by the alternative complement pathway. Platelets guard vessels integrity and initiate thrombus formation in response to endothelial damage, further constituting a triangular interconnection with the activation of neutrophils and the complement system. We here aimed to systematically assess the relevance of platelet counts and systemic complement system activation regarding distinct histopathological lesions in ANCA-associated renal vasculitis. Methods A cohort of 53 biopsy-proven cases of ANCA-associated renal vasculitis were retrospectively enrolled in a single-center observational study. Univariate and multivariate regression analysis was performed to identify parameters associated with platelet counts in ANCA-associated renal vasculitis compared to disease controls. Finally, the relevance of platelets for disease course and recovery was assessed by survival analysis. Results Lower platelet counts correlated with markers of kidney injury including eGFR loss (p=0.0004) and lower complement C3 levels (p=0.0037). Multivariate and subgroup analysis revealed that this association was only present in the subgroup with MPO-ANCA seropositivity (eGFR loss: p=0.0009, lower C3: p=0.0032). While lower platelet counts correlated with kidney injury in the PR3-ANCA subgroup (eGFR loss: p=0.0272), we did not observe an independent association with complement C3 levels (p=0.4497). Independent of any glomerular lesion, lower platelet counts correlated with interstitial fibrosis (p=0.0313), tubular atrophy (p=0.0073), and tubulitis in areas of interstitial fibrosis and tubular atrophy (p=0.0033). Finally, we observed significant differences with increased requirement of kidney replacement therapy (KRT) or death in the subgroup below median platelet counts (HR: 4.1, 95% CI: 1.6-10, p=0.0047), associated with a lower probability of discharge and prolonged hospitalization in this subgroup (HR: 0.5, 95% CI: 0.3-0.9, p=0.0113). Conclusion Based on our observation that an association between platelets and complement system activation is only observed in the MPO-ANCA subgroup, this could implicate that platelets and complement C3 link innate immunity to tubulointerstitial injury in the presence of MPO-ANCA autoantibodies.
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Affiliation(s)
- Eva Baier
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | - Désirée Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | | | - Samy Hakroush
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
- SYNLAB Pathology Hannover, SYNLAB Holding Germany, Augsburg, Germany
| | - Björn Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
- *Correspondence: Björn Tampe,
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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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