1
|
Reis-Neto ETD, Seguro LPC, Sato EI, Borba EF, Klumb EM, Costallat LTL, Medeiros MMDC, Bonfá E, Araújo NC, Appenzeller S, Montandon ACDOES, Yuki EFN, Teixeira RCDA, Telles RW, Egypto DCSD, Ribeiro FM, Gasparin AA, Junior ASDA, Neiva CLS, Calderaro DC, Monticielo OA. II Brazilian Society of Rheumatology consensus for lupus nephritis diagnosis and treatment. Adv Rheumatol 2024; 64:48. [PMID: 38890752 DOI: 10.1186/s42358-024-00386-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 05/25/2024] [Indexed: 06/20/2024] Open
Abstract
OBJECTIVE To develop the second evidence-based Brazilian Society of Rheumatology consensus for diagnosis and treatment of lupus nephritis (LN). METHODS Two methodologists and 20 rheumatologists from Lupus Comittee of Brazilian Society of Rheumatology participate in the development of this guideline. Fourteen PICO questions were defined and a systematic review was performed. Eligible randomized controlled trials were analyzed regarding complete renal remission, partial renal remission, serum creatinine, proteinuria, serum creatinine doubling, progression to end-stage renal disease, renal relapse, and severe adverse events (infections and mortality). The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to develop these recommendations. Recommendations required ≥82% of agreement among the voting members and were classified as strongly in favor, weakly in favor, conditional, weakly against or strongly against a particular intervention. Other aspects of LN management (diagnosis, general principles of treatment, treatment of comorbidities and refractory cases) were evaluated through literature review and expert opinion. RESULTS All SLE patients should undergo creatinine and urinalysis tests to assess renal involvement. Kidney biopsy is considered the gold standard for diagnosing LN but, if it is not available or there is a contraindication to the procedure, therapeutic decisions should be based on clinical and laboratory parameters. Fourteen recommendations were developed. Target Renal response (TRR) was defined as improvement or maintenance of renal function (±10% at baseline of treatment) combined with a decrease in 24-h proteinuria or 24-h UPCR of 25% at 3 months, a decrease of 50% at 6 months, and proteinuria < 0.8 g/24 h at 12 months. Hydroxychloroquine should be prescribed to all SLE patients, except in cases of contraindication. Glucocorticoids should be used at the lowest dose and for the minimal necessary period. In class III or IV (±V), mycophenolate (MMF), cyclophosphamide, MMF plus tacrolimus (TAC), MMF plus belimumab or TAC can be used as induction therapy. For maintenance therapy, MMF or azathioprine (AZA) are the first choice and TAC or cyclosporin or leflunomide can be used in patients who cannot use MMF or AZA. Rituximab can be prescribed in cases of refractory disease. In cases of failure in achieving TRR, it is important to assess adherence, immunosuppressant dosage, adjuvant therapy, comorbidities, and consider biopsy/rebiopsy. CONCLUSION This consensus provides evidence-based data to guide LN diagnosis and treatment, supporting the development of public and supplementary health policies in Brazil.
Collapse
Affiliation(s)
- Edgard Torres Dos Reis-Neto
- Division of Rheumatology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM/Unifesp), Otonis Street, 863, 2 Floor, Vila Clementino, São Paulo, SP, 04025-002, Brazil.
| | - Luciana Parente Costa Seguro
- Division of Rheumatology, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Emília Inoue Sato
- Division of Rheumatology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM/Unifesp), Otonis Street, 863, 2 Floor, Vila Clementino, São Paulo, SP, 04025-002, Brazil
| | - Eduardo Ferreira Borba
- Division of Rheumatology, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Evandro Mendes Klumb
- Department of Rheumatology, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lilian Tereza Lavras Costallat
- Division of Rheumatology, Department of Orthopedics, Rheumatology and Traumatology, Universidade Estadual de Campinas (Unicamp), Campinas, Brazil
| | | | - Eloisa Bonfá
- Division of Rheumatology, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Nafice Costa Araújo
- Division of Rheumatology, Hospital do Servidor Público Estadual de São Paulo - Instituto de Assistência Médica ao Servidor Público Estadual de São Paulo, São Paulo, Brazil
| | - Simone Appenzeller
- Division of Rheumatology, Department of Orthopedics, Rheumatology and Traumatology, Universidade Estadual de Campinas (Unicamp), Campinas, Brazil
| | | | - Emily Figueiredo Neves Yuki
- Division of Rheumatology, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | | | - Rosa Weiss Telles
- Division of Rheumatology, Faculdade de Medicina da Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | | | - Francinne Machado Ribeiro
- Department of Rheumatology, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andrese Aline Gasparin
- Division of Rheumatology, Department of Internal Medicine, Hospital de Clínicas de Porto Alegre, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Antonio Silaide de Araujo Junior
- Division of Rheumatology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM/Unifesp), Otonis Street, 863, 2 Floor, Vila Clementino, São Paulo, SP, 04025-002, Brazil
| | | | - Debora Cerqueira Calderaro
- Division of Rheumatology, Faculdade de Medicina da Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Odirlei Andre Monticielo
- Division of Rheumatology, Department of Internal Medicine, Hospital de Clínicas de Porto Alegre, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| |
Collapse
|
2
|
Zhang P, Yang X, Fu MZ, Gao CL, Fang X, Xia ZK. Risk Factors and Clinical Outcomes of Renal Thrombotic Microangiopathy in Children with Lupus Nephritis in Terms of Pathological and Clinical Features. Nephron Clin Pract 2024:1-9. [PMID: 38852577 DOI: 10.1159/000538240] [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: 05/20/2022] [Accepted: 03/05/2024] [Indexed: 06/11/2024] Open
Abstract
BACKGROUND Thrombotic microangiopathy (TMA) is an important risk factor for the prognosis of lupus nephritis (LN). Patients with LN complicated with TMA tend to be critically ill with high mortality and poor prognosis. In the present study, we retrospectively analyzed the clinical manifestations, laboratory results, renal pathological manifestations, and prognosis of children with LN-TMA and analyzed the risk factors for end-stage renal disease (ESRD) in children with LN-TMA. METHODS Seventy-four patients with LN and renal TMA (rTMA) were selected and compared to 128 LN controls without TMA (1:2 ratio) matched according to demographics, pathological type and treatments. RESULTS The mean values of systolic blood pressure, diastolic blood pressure (DBP), lactate dehydrogenase (LDH), blood urea nitrogen (BUN), urinary protein quantitation (PRO), urine red blood cells, N-acetyl-β-D-glucosidase (NAG), retinol-binding protein, systemic lupus erythematosus disease activity score (SLEDAI), and activity index (AI) scores in the TMA group were all higher than those in the non-TMA group (p < 0.05 and p < 0.01). The mean values of complement C3, hemoglobin, platelets, estimated glomerular filtration rate, and chronic index (CI) score in the TMA group were all lower than those in the non-TMA group (p < 0.05 and p < 0.01). The number of cases of glomerular crescent, fibrous crescent, endocapillary proliferation, tubular atrophy, interstitial fibrosis, C3 and C1q deposition in the TMA group was higher than that in the non-TMA group (p < 0.05 and p < 0.01). The 3-year and 5-year renal survival rates in the TMA group (88.93% vs. 97.00%, p < 0.05) and TMA group (61.41% vs. 82.31%, p < 0.05) were significantly lower than those in the non-TMA group. Multivariate Cox regression analysis showed that serum creatinine before treatment (≥110 μmol/L), TMA and interstitial fibrosis were independent risk factors for the development of ESRD in LN children. CONCLUSION The general condition of children with TMA is critical, and the prognosis is poor. Early detection, early treatment and the development of new treatments are key to improving LN-TMA outcomes in children.
Collapse
Affiliation(s)
- Pei Zhang
- Department of Pediatrics, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China,
| | - Xiao Yang
- Department of Pediatrics, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China
| | - Meng-Zhen Fu
- Department of Pediatric Nephrology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Chun-Lin Gao
- Department of Pediatrics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xiang Fang
- Department of Pediatrics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Zheng-Kun Xia
- Department of Pediatrics, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China
- Department of Pediatrics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| |
Collapse
|
3
|
Nunes MST, Barbosa Jorge L, Yu L, Woronik V, Bitencourt Dias C. Epidemiological, immunological, and treatment response profile of patients with lupus nephritis in Brazil. Lupus 2024; 33:650-658. [PMID: 38514381 DOI: 10.1177/09612033241240869] [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: 03/23/2024]
Abstract
BACKGROUND AND HYPOTHESIS Brazil has the largest number of individuals of African descent outside Africa and a very admixed population. Among cases of lupus nephritis (LN) in the country, there are differences in incidence, and even in severity, depending on the location and characteristics of the population studied. The aim of this study was to describe the clinical and epidemiological characteristics of LN in Brazil, as well as to determine which of those characteristics would be risk factors for a poor renal prognosis. METHODS This was a retrospective, descriptive observational study of patients diagnosed with LN who underwent kidney biopsy between 1999 and 2015 in the Nephrology Department of the Hospital das Clínicas, in São Paulo, Brazil. Data were collected from electronic medical records. RESULTS We evaluated 398 patients, among who 94.1% and 77.7% tested positive for antinuclear antibodies and anti-DNA antibodies, respectively, whereas 33.7% showed the full-house pattern. The time from LN symptom onset to biopsy was <6 months in 47.5% (early biopsy group) and ≥6 months in 52.5% (late biopsy group). In the early biopsy group, the chronicity index was lower and the activity index was higher. Multivariate analysis showed that a higher chronicity index was the only independent risk factor for progression to requiring kidney replacement therapy. CONCLUSION Late biopsy seems to be associated with negative renal outcomes in LN. However, it seems that a higher chronicity index is the main predictor of a poor renal outcome among patients with LN in Brazil.
Collapse
Affiliation(s)
- Mariana Sousa Teixeira Nunes
- Laboratory of Renal Pathophysiology, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Lectícia Barbosa Jorge
- Laboratory of Renal Pathophysiology, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Luis Yu
- Laboratory of Renal Pathophysiology, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Viktoria Woronik
- Laboratory of Renal Pathophysiology, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Cristiane Bitencourt Dias
- Laboratory of Renal Pathophysiology, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
4
|
Smith J, Hans V, Yacyshyn E, Rouhi A, Oliver M. Systemic lupus erythematosus presenting with atypical hemolytic uremic syndrome: a case report and review of the literature. Rheumatol Int 2024:10.1007/s00296-024-05558-9. [PMID: 38502235 DOI: 10.1007/s00296-024-05558-9] [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: 01/07/2024] [Accepted: 02/09/2024] [Indexed: 03/21/2024]
Abstract
Systemic lupus erythematosus (SLE) can present with a diverse array of hematologic manifestations, among which atypical hemolytic uremic syndrome (aHUS) is a rare entity. SLE-triggered aHUS has significant morbidity and mortality without timely intervention, yet its frequency remains uncertain and optimal strategies for complement-directed therapies are largely expert-driven. We performed a comprehensive literature review and present a case of a 23-year-old female newly diagnosed with SLE/class IV lupus nephritis who developed aHUS that rapidly responded to the C5 antagonist, eculizumab. Review of the current literature identified forty-nine published cases of SLE with concurrent aHUS and revealed a predilection for aHUS in younger SLE patients, concurrent presentation with lupus nephritis, anti-dsDNA positivity, and complement system abnormalities. Over seventy percent of cases used eculizumab as complement-directed therapy with a trend towards faster time to improvement in laboratory parameters, though reported outcomes were highly variable. Early recognition of aHUS in SLE is pivotal in guiding appropriate therapeutic interventions, and prompt initiation of eculizumab may reduce the potential morbidity associated with plasmapheresis and additional immunosuppression. While eculizumab showcases promising results, its optimal timing and duration remain elusive. An understanding of a patients' complement genetics could aid management strategies, and ongoing research into complement-targeted therapies offers promising avenues for both SLE and aHUS treatment.
Collapse
Affiliation(s)
- Justin Smith
- Department of Medicine, University of Alberta, 8-130 Clinical Sciences Building, 11350 83 Avenue NW, Edmonton, AB, T6G 2G3, Canada.
| | - Varinder Hans
- Department of Medicine, University of Alberta, 8-130 Clinical Sciences Building, 11350 83 Avenue NW, Edmonton, AB, T6G 2G3, Canada
| | - Elaine Yacyshyn
- Department of Medicine, University of Alberta, 8-130 Clinical Sciences Building, 11350 83 Avenue NW, Edmonton, AB, T6G 2G3, Canada
| | - Azin Rouhi
- Department of Medicine, University of Alberta, 8-130 Clinical Sciences Building, 11350 83 Avenue NW, Edmonton, AB, T6G 2G3, Canada
| | - Monika Oliver
- Department of Medicine, Division of Hematology, University of Alberta, Edmonton, Canada
| |
Collapse
|
5
|
Leisring J, Brodsky SV, Parikh SV. Clinical Evaluation and Management of Thrombotic Microangiopathy. Arthritis Rheumatol 2024; 76:153-165. [PMID: 37610060 DOI: 10.1002/art.42681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/17/2023] [Accepted: 08/17/2023] [Indexed: 08/24/2023]
Abstract
Thrombotic microangiopathy (TMA) refers to a diverse group of diseases that share clinical and histopathologic features. TMA is clinically characterized by microangiopathic hemolytic anemia, consumptive thrombocytopenia, and organ injury that stems from endothelial damage and vascular occlusion. There are several disease states with distinct pathophysiological mechanisms that manifest as TMA. These conditions are associated with significant morbidity and mortality and require urgent recognition and treatment. Thrombotic thrombocytopenic purpura and hemolytic uremic syndrome are traditionally considered to be primary forms of TMA, but TMA more commonly occurs in association with a coexisting condition such as infection, pregnancy, autoimmune disease, or malignant hypertension, among others. Determining the cause of TMA is a diagnostic challenge because of limited availability of disease-specific testing. However, identifying the underlying etiology is imperative as treatment strategies differ. Our understanding of the conditions that cause TMA is evolving. Recent advances have led to improved comprehension of the varying pathogenic mechanisms that drive TMA. Development of targeted therapeutics has resulted in significant improvements in patient outcomes. In this article, we review the pathogenesis and clinical features of the different TMA-causing conditions. We outline a practical approach to diagnosis and management and discuss empiric and disease-specific treatment strategies.
Collapse
Affiliation(s)
- Joshua Leisring
- The Ohio State University Wexner Medical Center, Columbus, Ohio
| | | | - Samir V Parikh
- The Ohio State University Wexner Medical Center, Columbus, Ohio
| |
Collapse
|
6
|
Jiang P, Yao C, Guo DA. Traditional Chinese medicine for the treatment of immune-related nephropathy: A review. Acta Pharm Sin B 2024; 14:38-66. [PMID: 38239236 PMCID: PMC10793104 DOI: 10.1016/j.apsb.2023.11.006] [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: 03/23/2023] [Revised: 09/18/2023] [Accepted: 10/24/2023] [Indexed: 01/22/2024] Open
Abstract
Immune-related nephropathy (IRN) refers to immune-response-mediated glomerulonephritis and is the main cause of end-stage renal failure. The pathogenesis of IRN is not fully understood; therefore, treatment is challenging. Traditional Chinese medicines (TCMs) have potent clinical effects in the treatment of the IRN conditions immunoglobulin A nephropathy, lupus nephropathy, and diabetic nephropathy. The underlying mechanisms mainly include its inhibition of inflammation; improvements to renal interstitial fibrosis, oxidative stress, autophagy, apoptosis; and regulation of immunity. In this review, we summarize the clinical symptoms of the three IRN subtypes and the use of TCM prescriptions, herbs, and bioactive compounds in treating IRN, as well as the potential mechanisms, intending to provide a reference for the future study of TCM as IRN treatments.
Collapse
Affiliation(s)
- Pu Jiang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
- Shanghai Research Center for Modernization of Traditional Chinese Medicine, National Engineering Research Center of TCM Standardization Technology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Changliang Yao
- Shanghai Research Center for Modernization of Traditional Chinese Medicine, National Engineering Research Center of TCM Standardization Technology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - De-an Guo
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
- Shanghai Research Center for Modernization of Traditional Chinese Medicine, National Engineering Research Center of TCM Standardization Technology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| |
Collapse
|
7
|
Cole MA, Gerber GF, Chaturvedi S. Complement biomarkers in the antiphospholipid syndrome - Approaches to quantification and implications for clinical management. Clin Immunol 2023; 257:109828. [PMID: 37913840 PMCID: PMC10759159 DOI: 10.1016/j.clim.2023.109828] [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: 06/16/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 11/03/2023]
Abstract
Complement is a major driver of antiphospholipid syndrome (APS) and a promising therapeutic target in refractory and catastrophic APS. Complement testing in APS is largely limited to research settings, and reliable, rapid-turnaround biomarkers are needed to predict those at risk for adverse clinical outcomes and most likely to benefit from complement inhibition. We review complement biomarkers and their association with thrombosis and obstetric outcomes, including: (i) complement proteins and activation fragments in the fluid phase; (ii) assays that evaluate complement on cell membranes (e.g. in vivo cell-bound complement fragments, hemolytic assays, and ex vivo 'functional' cell-based assays, and (iii) sequencing of complement genes. Current studies highlight the inconsistencies in testing both between studies and various aPL/APS subgroups, suggesting that either cell-based testing or multiplex panels employing a combination of biomarkers simultaneously may be most clinically relevant. Standardization of complement assays is needed to ensure reproducibility and establish clinically relevant applications.
Collapse
Affiliation(s)
- Michael A Cole
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Gloria F Gerber
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Shruti Chaturvedi
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States.
| |
Collapse
|
8
|
Anderson M, Magro C, Belmont HM. Microvascular C5b-9 deposition in non-lesional skin in patients with SLE and its correlation with active lupus nephritis: a prospective observational study. Lupus Sci Med 2023; 10:e000996. [PMID: 37879755 PMCID: PMC10603335 DOI: 10.1136/lupus-2023-000996] [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: 07/24/2023] [Accepted: 09/14/2023] [Indexed: 10/27/2023]
Abstract
OBJECTIVE Tissue damage in lupus nephritis (LN) is mediated by activation of the classical complement pathway. Complement-mediated upregulation of endothelial cell adhesion molecules is seen in dermal blood vessels of non-lesional skin of patients with active lupus. In diseases with systemic complement activation, extensive microvascular C5b-9 deposition is seen in non-lesional skin. In this study, we assess the presence of systemic complement pathway activation as determined by non-lesional skin microvascular C5b-9 deposition in patients with LN. METHODS Eight patients with active LN and eight patients without active LN underwent non-lesional skin biopsies. Using a diaminobenzidine technique, specimens were evaluated for microvascular C5b-9 consistent with systemic complement pathway activation. RESULTS Five of eight patients with active LN and one of eight patients without active LN demonstrated positive C5b-9 staining in non-lesional skin (p=0.04). Positive non-lesional C5b-9 staining has greater specificity, 87.5%, for active LN than pyuria, low complements, elevated double-stranded DNA (dsDNA) and proteinuria. Urine protein creatinine ratio was significantly higher in patients with positive non-lesional C5b-9 deposition (5.18 vs 1.20; p=0.04). C5b-9 deposition was not associated with a higher NIH Activity Index, interstitial fibrosis, dsDNA or lower complements. CONCLUSION This is the first study to demonstrate evidence in non-lesional skin of microvascular C5b-9 indicative of systemic complement pathway activation in LN. C5b-9 deposition is statistically more common and demonstrated greater specificity than most historical biomarkers for active LN. The findings support a potential role for microvascular C5b-9 assessment in non-lesional skin as a biomarker for LN activity.
Collapse
Affiliation(s)
- Meghan Anderson
- Department of Rheumatology, NYU Grossman School of Medicine, New York City, New York, USA
| | - Cynthia Magro
- Department of Pathology, Weill Cornell Medicine, New York City, New York, USA
| | - H Michael Belmont
- Department of Rheumatology, NYU Grossman School of Medicine, New York City, New York, USA
| |
Collapse
|
9
|
Lu X, Wang L, Wang M, Li Y, Zhao Q, Shi Y, Zhang Y, Wang Y, Wang W, Ji L, Hou H, Li D. Association between immunoglobulin G N-glycosylation and lupus nephritis in female patients with systemic lupus erythematosus: a case-control study. Front Immunol 2023; 14:1257906. [PMID: 37809087 PMCID: PMC10552529 DOI: 10.3389/fimmu.2023.1257906] [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: 07/13/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
Background Lupus nephritis (LN) is a crucial complication of systemic lupus erythematosus (SLE) and has important clinical implications in guiding treatment. N-glycosylation of immunoglobulin G (IgG) plays a key role in the development of SLE by affecting the balance of anti-inflammatory and proinflammatory responses. This study aimed to evaluate the performance of IgG N-glycosylation for diagnosing LN in a sample of female SLE patients. Methods This case-control study recruited 188 women with SLE, including 94 patients with LN and 94 age-matched patients without LN. The profiles of plasma IgG N-glycans were detected by hydrophilic interaction chromatography with ultra-performance liquid chromatography (HILIC-UPLC). A multivariate logistic regression model was used to explore the associations between IgG N-glycans and LN. A diagnostic model was developed using the significant glycans as well as demographic factors. The performance of IgG N-glycans in the diagnosis of LN was evaluated by receiver operating characteristic (ROC) curve analysis, and the area under the curve (AUC) and its 95% confidence interval (CI) were calculated. Results There were significant differences in 9 initial glycans (GP2, GP4, GP6, GP8, GP10, GP14, GP16, GP18 and GP23) between women with SLE with and without LN (P < 0.05). The levels of sialylated, galactosylated and fucosylated glycans were significantly lower in the LN patients than in the control group, while bisected N-acetylglucosamine (GlcNAc) glycans were increased in LN patients (P < 0.05). GP8, GP10, GP18, and anemia were included in our diagnostic model, which performed well in differentiating female SLE patients with LN from those without LN (AUC = 0.792, 95% CI: 0.727 to 0.858). Conclusion Our findings indicate that decreased sialylation, galactosylation, and core fucosylation and increased bisecting GlcNAc might play a role in the development of LN by upregulating the proinflammatory response of IgG. IgG N-glycans can serve as potential biomarkers to differentiate individuals with LN among SLE patients.
Collapse
Affiliation(s)
- Xinxia Lu
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Liangao Wang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Meng Wang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- Jinshan District Center for Disease Control and Prevention, Shanghai, China
| | - Yuejin Li
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining, China
| | - Qinqin Zhao
- Department of Geriatric Cognitive Medicine, The Affiliated Taian City Central Hospital of Qingdao University, Taian, China
| | - Yanjun Shi
- Department of Rheumatology and Immunology, Liaocheng People’s Hospital, Liao’cheng, China
| | - Yujing Zhang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Yingjie Wang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Wei Wang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- Centre for Precision Health, School of Medical and Health Sciences, Edith Cowan University, Perth, WA, Australia
| | - Long Ji
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- College of Sports Medicine and Rehabilitation, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai’an, China
| | - Haifeng Hou
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- Department of Gastroenterology, The Second Affiliated Hospital of Shandong First Medical University, Tai’an, China
| | - Dong Li
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- Clinical Research Center, The Second Affiliated Hospital of Shandong First Medical University, Tai’an, China
| |
Collapse
|
10
|
Rojas-Rivera JE, García-Carro C, Ávila AI, Espino M, Espinosa M, Fernández-Juárez G, Fulladosa X, Goicoechea M, Macía M, Morales E, Quintana LF, Praga M. Diagnosis and treatment of lupus nephritis: a summary of the Consensus Document of the Spanish Group for the Study of Glomerular Diseases (GLOSEN). Clin Kidney J 2023; 16:1384-1402. [PMID: 37664575 PMCID: PMC10468759 DOI: 10.1093/ckj/sfad055] [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: 02/03/2023] [Indexed: 09/05/2023] Open
Abstract
Lupus nephritis (LN) is the most frequent serious manifestation of patients with systemic lupus erythematosus (SLE). Up to 60% of SLE patients develop LN, which has a significant impact on their quality of life and prognosis. Recent advances have improved the diagnostic approach to LN, and new drugs that block specific pathways and kidney damage progression have been developed. Several randomized and well-powered clinical trials have confirmed the efficacy of these agents in terms of proteinuria remission and preservation of kidney function in the medium and long term, with an acceptable safety profile and good tolerance. The combination of different therapies allows for reduction of the dose and duration of corticosteroids and other potentially toxic therapies and leads to an increase in the number of patients achieving complete remission of the disease. This consensus document carried out by the Spanish Group for the Study of Glomerular Diseases (GLOSEN) provides practical and updated recommendations, based on the best available evidence and clinical expertise of participating nephrologists.
Collapse
Affiliation(s)
- Jorge E Rojas-Rivera
- Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
- Departament of Medicine, Universidad Autónoma de Madrid
| | | | | | - Mar Espino
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | | | | | - Xavier Fulladosa
- Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | | | - Manuel Macía
- Hospital Universitario Nuestra Señora de la Candelaria, Tenerife, Spain
| | - Enrique Morales
- Hospital Universitario 12 de Octubre, Madrid, Spain
- Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
- Departament of Medicine, Universidad Complutense, Madrid, Spain
| | - Luis F Quintana
- Hospital Clínic de Barcelona, Barcelona, Spain
- Departament of Medicine, Universidad de Barcelona, IDIBAPS, Barcelona, Spain
| | - Manuel Praga
- Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
- Departament of Medicine, Universidad Complutense, Madrid, Spain
| |
Collapse
|
11
|
Gallant TL, Zheng E, Hobbs AM, Becka AJ, Bertsch RA. Complement-Mediated Thrombotic Microangiopathy in a Patient With Antiphospholipid Syndrome and Anti-glomerular Basement Membrane Antibodies. Cureus 2023; 15:e42410. [PMID: 37637585 PMCID: PMC10448002 DOI: 10.7759/cureus.42410] [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: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
Thrombotic microangiopathy (TMA) is a range of diseases characterized by thrombocytopenia, microangiopathic hemolytic anemia, and organ injury. Complement-mediated TMA is a rare, life-threatening subtype of TMA that occurs due to the uncontrolled activation of the alternative complement pathway in the absence of normal regulation, often resulting from deficiencies of various regulatory proteins. Anti-glomerular basement membrane (anti-GBM) disease, previously known as Goodpasture syndrome, is a life-threatening form of vasculitis in which immunoglobulin G autoantibodies bind to the alpha-3 chain of type IV collagen in alveolar and glomerular basement membranes. We present the case of a patient with a history of antiphospholipid syndrome who was diagnosed with complement-mediated TMA during hospital admission for elevated anti-GBM antibody titers discovered during an outpatient evaluation for elevated creatinine levels. Upon admission, treatment was started for presumed anti-GBM disease, including high-dose intravenous methylprednisolone injections and multiple plasmapheresis sessions. However, renal biopsy results showed no evidence of anti-GBM disease, but rather evidence of TMA. Subsequent laboratory studies revealed decreased complement levels, suggestive of a diagnosis of complement-mediated TMA. The patient was started on rituximab and eculizumab infusions, and she was discharged in stable condition after a 15-day hospitalization with outpatient appointments scheduled for genetic testing and further infusions. This case illustrates the importance of recognizing the key clinical and diagnostic features of complement-mediated TMA to promptly initiate appropriate therapy.
Collapse
Affiliation(s)
- Tara L Gallant
- College of Medicine, California Northstate University College of Medicine, Elk Grove, USA
| | - Emily Zheng
- College of Medicine, California Northstate University College of Medicine, Elk Grove, USA
| | | | | | | |
Collapse
|
12
|
Halimi JM, Al-Dakkak I, Anokhina K, Ardissino G, Licht C, Lim WH, Massart A, Schaefer F, Walle JV, Rondeau E. Clinical characteristics and outcomes of a patient population with atypical hemolytic uremic syndrome and malignant hypertension: analysis from the Global aHUS registry. J Nephrol 2023; 36:817-828. [PMID: 36152218 PMCID: PMC10090001 DOI: 10.1007/s40620-022-01465-z] [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: 03/30/2022] [Accepted: 09/06/2022] [Indexed: 10/14/2022]
Abstract
INTRODUCTION Atypical hemolytic uremic syndrome (aHUS) is a rare form of thrombotic microangiopathy (TMA) often caused by alternative complement dysregulation. Patients with aHUS can present with malignant hypertension (MHT), which may also cause TMA. METHODS This analysis of the Global aHUS Registry (NCT01522183) assessed demographics and clinical characteristics in eculizumab-treated and not-treated patients with aHUS, with (n = 71) and without (n = 1026) malignant hypertension, to further elucidate the potential relationship between aHUS and malignant hypertension. RESULTS While demographics were similar, patients with aHUS + malignant hypertension had an increased need for renal replacement therapy, including kidney transplantation (47% vs 32%), and more pathogenic variants/anti-complement factor H antibodies (56% vs 37%) than those without malignant hypertension. Not-treated patients with malignant hypertension had the highest incidence of variants/antibodies (65%) and a greater need for kidney transplantation than treated patients with malignant hypertension (65% vs none). In a multivariate analysis, the risk of end-stage kidney disease or death was similar between not-treated patients irrespective of malignant hypertension and was significantly reduced in treated vs not-treated patients with aHUS + malignant hypertension (adjusted HR (95% CI), 0.11 [0.01-0.87], P = 0.036). CONCLUSIONS These results confirm the high severity and poor prognosis of untreated aHUS and suggest that eculizumab is effective in patients with aHUS ± malignant hypertension. Furthermore, these data highlight the importance of accurate, timely diagnosis and treatment in these populations and support consideration of aHUS in patients with malignant hypertension and TMA. TRIAL REGISTRATION DETAILS Atypical Hemolytic-Uremic Syndrome (aHUS) Registry. Registry number: NCT01522183 (first listed 31st January, 2012; start date 30th April, 2012).
Collapse
Affiliation(s)
- Jean-Michel Halimi
- Service de Néphrologie-Hypertension Artérielle, Dialyses, Transplantation Rénale, CHRU Tours, Tours, France.
- University of Tours, Equipe d'Accueil 4245 (EA4245), Tours, France.
| | | | | | - Gianluigi Ardissino
- Center for HUS Control, Prevention and Management, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Christoph Licht
- Division of Nephrology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Wai H Lim
- Department of Renal Medicine, Sir Charles Gairdner Hospital, Perth, Australia
- Medical School, University of Western Australia, Perth, Australia
| | - Annick Massart
- Department of Nephrology and Hypertension, Antwerp University Hospital, Edegem, Belgium
| | - Franz Schaefer
- Division of Pediatric Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Johan Vande Walle
- Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium
| | - Eric Rondeau
- Urgences Néphrologiques et Transplantation Rénale, Hôpital Tenon, Paris, France
| |
Collapse
|
13
|
Rojas-Rivera JE, García-Carro C, Ávila AI, Espino M, Espinosa M, Fernández-Juárez G, Fulladosa X, Goicoechea M, Macía M, Morales E, Porras LFQ, Praga M. Consensus document of the Spanish Group for the Study of the Glomerular Diseases (GLOSEN) for the diagnosis and treatment of lupus nephritis. Nefrologia 2023; 43:6-47. [PMID: 37211521 DOI: 10.1016/j.nefroe.2023.05.006] [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: 10/11/2022] [Accepted: 10/17/2022] [Indexed: 05/23/2023] Open
Abstract
A significant number of patients with systemic lupus erythematosus (between 20% and 60% according to different reported series) develop lupus nephritis in the course of its evolution, which directly influences their quality of life and vital prognosis. In recent years, the greater knowledge about the pathogenesis of systemic lupus and lupus nephritis has allowed relevant advances in the diagnostic approach and treatment of these patients, achieving the development of drugs specifically aimed at blocking key pathogenic pathways of the disease. Encouragingly, these immunomodulatory agents have shown in well-powered, randomized clinical trials good clinical efficacy in the medium-term, defined as proteinuria remission and preservation of kidney function, with an acceptable safety profile and good patient tolerability. All this has made it possible to reduce the use of corticosteroids and other potentially more toxic therapies, as well as to increase the use of combined therapies. The present consensus document carried out by the Glomerular Diseases Working Group of the Spanish Society of Nephrology (GLOSEN), collects in a practical and summarized, but rigorous way, the best currently available evidence about the diagnosis, treatment, and follow-up of lupus nephritis patients, including cases of special situations, with the main objective of providing updated information and well-founded clinical recommendations to treating physicians, to improve the diagnostic and therapeutic approach to our patients.
Collapse
Affiliation(s)
- Jorge E Rojas-Rivera
- Hospital Universitario Fundación Jiménez Díaz, Servicio de Nefrología e Hipertensión, Madrid, Spain; Department of Medicine, Universidad Autónoma de Madrid, Servicio de Nefrología, Madrid, Spain.
| | - Clara García-Carro
- Hospital Universitario Clínico San Carlos, Servicio de Nefrología. Madrid, Spain.
| | - Ana I Ávila
- Hospital Dr. Peset, Servicio de Nefrología, Valencia, Spain
| | - Mar Espino
- Hospital Universitario 12 de Octubre, Servicio de Nefrología, Madrid, Spain
| | - Mario Espinosa
- Hospital Universitario Reina Sofía, Servicio de Nefrología, Cordoba, Spain
| | | | - Xavier Fulladosa
- Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Servicio de Nefrología, Barcelona, Spain
| | - Marian Goicoechea
- Hospital Universitario Gregorio Marañón, Servicio de Nefrología, Madrid, Spain
| | - Manuel Macía
- Hospital Universitario Nuestra Señora de la Candelaria, Servicio de Nefrología, Tenerife, Spain
| | - Enrique Morales
- Hospital Universitario 12 de Octubre, Servicio de Nefrología, Madrid, Spain; Instituto de Investigación Hospital Universitario 12 de Octubre, Servicio de Nefrología, Madrid, Spain; Departamento de Medicina, Universidad Complutense, Servicio de Nefrología, Madrid, Spain
| | - Luis F Quintana Porras
- Hospital Clínic de Barcelona, Servicio de Nefrología, Barcelona, Spain; Departamento de Medicina, Universidad de Barcelona, IDIBAPS, Servicio de Nefrología, Barcelona, Spain
| | - Manuel Praga
- Instituto de Investigación Hospital Universitario 12 de Octubre, Servicio de Nefrología, Madrid, Spain; Departamento de Medicina, Universidad Complutense, Servicio de Nefrología, Madrid, Spain
| |
Collapse
|
14
|
Kolev M, Barbour T, Baver S, Francois C, Deschatelets P. With complements: C3 inhibition in the clinic. Immunol Rev 2023; 313:358-375. [PMID: 36161656 DOI: 10.1111/imr.13138] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
C3 is a key complement protein, located at the nexus of all complement activation pathways. Extracellular, tissue, cell-derived, and intracellular C3 plays critical roles in the immune response that is dysregulated in many diseases, making it an attractive therapeutic target. However, challenges such as very high concentration in blood, increased acute expression, and the elevated risk of infections have historically posed significant challenges in the development of C3-targeted therapeutics. This is further complicated because C3 activation fragments and their receptors trigger a complex network of downstream effects; therefore, a clear understanding of these is needed to provide context for a better understanding of the mechanism of action (MoA) of C3 inhibitors, such as pegcetacoplan. Because of C3's differential upstream position to C5 in the complement cascade, there are mechanistic differences between pegcetacoplan and eculizumab that determine their efficacy in patients with paroxysmal nocturnal hemoglobinuria. In this review, we compare the MoA of pegcetacoplan and eculizumab in paroxysmal nocturnal hemoglobinuria and discuss the complement-mediated disease that might be amenable to C3 inhibition. We further discuss the current state and outlook for C3-targeted therapeutics and provide our perspective on which diseases might be the next success stories in the C3 therapeutics journey.
Collapse
Affiliation(s)
- Martin Kolev
- Apellis Pharmaceuticals, Waltham, Massachusetts, USA
| | - Tara Barbour
- Apellis Pharmaceuticals, Waltham, Massachusetts, USA
| | - Scott Baver
- Apellis Pharmaceuticals, Waltham, Massachusetts, USA
| | | | | |
Collapse
|
15
|
Zhang B, Xing G. Thrombotic microangiopathy mediates poor prognosis among lupus nephritis via complement lectin and alternative pathway activation. Front Immunol 2022; 13:1081942. [PMID: 36582241 PMCID: PMC9792970 DOI: 10.3389/fimmu.2022.1081942] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
Objective The pathogenesis of thrombotic microangiopathy (TMA) in lupus nephritis (LN) remains complicated. This study aimed to detect the deposition of complement lectin pathway (LP) and alternative pathway (AP) components in renal tissues, then evaluate the clinicopathological characteristics and risk factors for renal survival between patients with or without TMA in LN cohorts. Methods We included 79 patients with biopsy-proven LN-associated TMA and matched the same number of LN patients without TMA as the control group. The deposition of mannose binding lectin (MBL), MBL-associated serine proteases 1/3 (MASP1/3), complement factor B (CFB), complement factor D (CFD), C4d, and von Willebrand factor (VWF) in renal tissue was assessed by immunohistochemistry and immunofluorescence. Besides, co-localization of C5b-9 and CD34 was detected by confocal microscopy. Results In our retrospective cohort, the incidence of acute kidney injury (30% vs. 14%, p = 0.013), acute hemodialysis (35% vs. 5%, p < 0.001), and interstitial fibrosis (43% vs. 13%, p < 0.001) is higher in the TMA, compared with the control group. Despite aggressive steroids pulse, plasma exchange, and immunosuppressive therapy among TMA group, they still had significantly inferior 3-year renal survival rates (68% vs. 89%, p = 0.002) than those in the non-TMA group. COX regression analysis identified that TMA (HR 4.807, 95% CI [2.052, 11.263], p < 0.001) is a risk factor in LN. MBL, MASP1/3, CFB, CFD, C4d, and VWF deposited along the glomerulus among LN, while TMA had stronger staining intensity and deposition. The co-localized expression of CD34 and C5b-9 in the endothelial cells was also observed in the renal tissues. Conclusions TMA is an independent risk factor for renal survival in LN patients. Moreover, LP and AP activation are involved in the pathogenesis of LN-associated TMA.
Collapse
|
16
|
Lupus nephritis with corticosteroid responsiveness: molecular changes of CD46-mediated type 1 regulatory T cells. Pediatr Res 2022; 92:1099-1107. [PMID: 34952938 DOI: 10.1038/s41390-021-01882-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 11/05/2021] [Accepted: 11/11/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND The engagement of the complement regulatory proteins CD46 and CD3 in human CD4+ T cells induces the type 1 regulatory T cells (Tr1) and interleukin-10 (IL-10) secretion. This study aimed to elucidate the molecular changes of Tr1 cells through CD46 cytoplasmic Cyt1 tail in lupus nephritis (LN) respond to intravenous methylprednisolone (ivMP) therapy. METHODS We enrolled 40 pediatric patients with LN and 30 healthy controls. Clinical characteristics and peripheral blood mononuclear cells were collected before and 3 days after the administration of ivMP. Kidney specimens were taken from five LN and five minimal-change nephrotic syndrome patients. RESULTS We found that defective CD46-mediated T-helper type 1 contraction (IL-10 switching) is present in active LN patients. The ivMP therapy enhanced LN remission, restored the production of IL-10, increased the CD46-Cyt1/Cyt2 ratio, AKT, and cAMP-responsive element-binding protein phosphorylation, and induced migration with the expression of chemokine receptor molecules CCR4, CCR6, and CCR7 of CD3/CD46-activated Tr1 cells. CONCLUSIONS Pharmacologic interventions that alter the patterns of CD46-Cyt1/Cyt2 expression and the secretion of IL-10 by CD3/CD46-activated Tr1 cells can be used in patients with active LN. IMPACT In patients with LN, ivMP was associated with increased IL-10 production and increased CD46-Cyt1/Cyt2 ratio and AKT phosphorylation by Tr1 cells, with enhanced potential to migration in response to CCL17. These results suggest that expression levels of CD46 isoforms Cyt1 and Cyt2 in CD4 + CD46 + Tr1 cells differ in patients with active LN but can be corrected by corticosteroid treatment. Enhancing the expression of functional CD4 + CD46 + Tr1 cells may be a useful therapeutic approach for LN.
Collapse
|
17
|
Documento de consenso del Grupo de Estudio de Enfermedades Glomerulares de la Sociedad Española de Nefrología (GLOSEN) para el diagnóstico y tratamiento de la nefritis lúpica. Nefrologia 2022. [DOI: 10.1016/j.nefro.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
18
|
Roy B, Runa SA. SARS-CoV-2 infection and diabetes: Pathophysiological mechanism of multi-system organ failure. World J Virol 2022; 11:252-274. [PMID: 36188734 PMCID: PMC9523319 DOI: 10.5501/wjv.v11.i5.252] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/25/2022] [Accepted: 07/31/2022] [Indexed: 02/05/2023] Open
Abstract
Since the discovery of the coronavirus disease 2019 outbreak, a vast majority of studies have been carried out that confirmed the worst outcome of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in people with preexisting health conditions, including diabetes, obesity, hypertension, cancer, and cardiovascular diseases. Likewise, diabetes itself is one of the leading causes of global public health concerns that impose a heavy global burden on public health as well as socio-economic development. Both diabetes and SARS-CoV-2 infection have their independent ability to induce the pathogenesis and severity of multi-system organ failure, while the co-existence of these two culprits can accelerate the rate of disease progression and magnify the severity of the disease. However, the exact pathophysiology of multi-system organ failure in diabetic patients after SARS-CoV-2 infection is still obscure. This review summarized the organ-specific possible molecular mechanisms of SARS-CoV-2 and diabetes-induced pathophysiology of several diseases of multiple organs, including the lungs, heart, kidneys, brain, eyes, gastrointestinal system, and bones, and sub-sequent manifestation of multi-system organ failure.
Collapse
Affiliation(s)
- Bipradas Roy
- Department of Physiology, Wayne State University, Detroit, MI 48201, United States
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI 48202, United States
| | - Sadia Afrin Runa
- Department of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| |
Collapse
|
19
|
Treatment advances in antiphospholipid syndrome: 2022 update. Curr Opin Pharmacol 2022; 65:102212. [DOI: 10.1016/j.coph.2022.102212] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 03/11/2022] [Indexed: 12/22/2022]
|
20
|
Intertwined pathways of complement activation command the pathogenesis of lupus nephritis. Transl Res 2022; 245:18-29. [PMID: 35296451 PMCID: PMC9167748 DOI: 10.1016/j.trsl.2022.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 12/26/2022]
Abstract
The complement system is involved in the origin of autoimmunity and systemic lupus erythematosus. Both genetic deficiency of complement components and excessive activation are involved in primary and secondary renal diseases, including lupus nephritis. Among the pathways, the classical pathway has long been accepted as the main pathway of complement activation in systemic lupus erythematosus. However, more recent studies have shown the contribution of factors B and D which implies the involvement of the alternative pathway. While there is evidence on the role of the lectin pathway in systemic lupus erythematosus, it is yet to be demonstrated whether this pathway is protective or harmful in lupus nephritis. Complement is being explored for the development of disease biomarkers and therapeutic targeting. In the current review we discuss the involvement of complement in lupus nephritis.
Collapse
|
21
|
Estrada CC, Cardona S, Guo Y, Revelo MP, D'Agati VD, Koganti S, Devaraj J, He JC, Heeger PS, Mallipattu SK. Endothelial-specific loss of Krüppel-Like Factor 4 triggers complement-mediated endothelial injury. Kidney Int 2022; 102:58-77. [PMID: 35483525 DOI: 10.1016/j.kint.2022.03.025] [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: 04/11/2021] [Revised: 03/02/2022] [Accepted: 03/14/2022] [Indexed: 12/20/2022]
Abstract
Thrombotic microangiopathy (TMA) in the kidney represents the most severe manifestation of kidney microvascular endothelial injury. Despite the source of the inciting event, the diverse clinical forms of kidney TMA share dysregulation of endothelial cell transcripts and complement activation. Here, we show that endothelial-specific knockdown of Krüppel-Like Factor 4 (Klf4)ΔEC, an anti-inflammatory and antithrombotic zinc-finger transcription factor, increases the susceptibility to glomerular endothelial injury and microangiopathy in two genetic murine models that included endothelial nitric oxide synthase knockout mice and aged mice (52 weeks), as well as in a pharmacologic model of TMA using Shiga-toxin 2. In all models, Klf4ΔEC mice exhibit increased pro-thrombotic and pro-inflammatory transcripts, as well as increased complement factors C3 and C5b-9 deposition and histologic features consistent with subacute TMA. Interestingly, complement activation in Klf4ΔEC mice was accompanied by reduced expression of a key KLF4 transcriptional target and membrane bound complement regulatory gene, Cd55. To assess a potential mechanism by which KLF4 might regulate CD55 expression, we performed in silico chromatin immunoprecipitation enrichment analysis of the CD55 promotor and found KLF4 binding sites upstream from the CD55 transcription start site. Using patient-derived kidney biopsy specimens, we found glomerular expression of KLF4 and CD55 was reduced in patients with TMA as compared to control biopsies of the unaffected pole of patient kidneys removed due to kidney cancer. Thus, our data support that endothelial Klf4 is necessary for maintenance of a quiescent glomerular endothelial phenotype and its loss increases susceptibility to complement activation and induction of prothrombotic and pro-inflammatory pathways.
Collapse
Affiliation(s)
- Chelsea C Estrada
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA; Renal Section, Northport Veterans Affairs Medical Center, Northport, New York, USA
| | - Stephanie Cardona
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Yiqing Guo
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Monica P Revelo
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Vivette D D'Agati
- Department of Pathology and Cell Biology, Columbia University, New York, New York, USA
| | - Siva Koganti
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Jason Devaraj
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - John C He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Peter S Heeger
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sandeep K Mallipattu
- Division of Nephrology, Department of Medicine, Stony Brook University, Stony Brook, New York, USA; Renal Section, Northport Veterans Affairs Medical Center, Northport, New York, USA.
| |
Collapse
|
22
|
Fernandez-Ruiz R, Belmont HM. The role of anticomplement therapy in lupus nephritis. Transl Res 2022; 245:1-17. [PMID: 35158097 DOI: 10.1016/j.trsl.2022.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 10/19/2022]
Abstract
The complement system plays crucial roles in homeostasis and host defense against microbes. Deficiency of early complement cascade components has been associated with increased susceptibility to systemic lupus erythematosus (SLE), whereas excessive complement consumption is a hallmark of this disease. Although enhanced classical pathway activation by immune complexes was initially thought to be the main contributor to lupus nephritis (LN) pathogenesis, an increasing body of evidence has suggested the alternative and the lectin pathways are also involved. Therapeutic agents targeting complement activation have been used in LN patients and clinical trials are ongoing. We review the mechanisms by which complement system dysregulation contributes to renal injury in SLE and summarize the latest evidence on the use of anticomplement agents to manage this condition.
Collapse
Affiliation(s)
- Ruth Fernandez-Ruiz
- Division of Rheumatology, NYU Grossman School of Medicine, New York, New York
| | | |
Collapse
|
23
|
Hanna RM, Henriksen K, Kalantar-Zadeh K, Ferrey A, Burwick R, Jhaveri KD. Thrombotic Microangiopathy Syndromes-Common Ground and Distinct Frontiers. Adv Chronic Kidney Dis 2022; 29:149-160.e1. [PMID: 35817522 DOI: 10.1053/j.ackd.2021.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 11/02/2021] [Accepted: 11/18/2021] [Indexed: 11/11/2022]
Abstract
Thrombotic microangiopathies (TMAs) have in common a terminal phenotype of microangiopathic hemolytic anemia with end-organ dysfunction. Thrombotic thrombocytopenic purpura results from von Willebrand factor multimerization, Shiga toxin-mediated hemolytic uremic syndrome causes toxin-induced endothelial dysfunction, while atypical hemolytic uremic syndrome results from complement system dysregulation. Drug-induced TMA, rheumatological disease-induced TMA, and renal-limited TMA exist in an intermediate space that represents secondary complement activation and may overlap with atypical hemolytic uremic syndrome clinically. The existence of TMA without microangiopathic hemolytic features, renal-limited TMA, represents an undiscovered syndrome that responds incompletely and inconsistently to complement blockade. Hematopoietic stem cell transplant-TMA represents another more resistant form of TMA with different therapeutic needs and clinical course. It has become apparent that TMA syndromes are an emerging field in nephrology, rheumatology, and hematology. Much work remains in genetics, molecular biology, and therapeutics to unravel the puzzle of the relationships and distinctions apparent between the different subclasses of TMA syndromes.
Collapse
Affiliation(s)
- Ramy M Hanna
- UCI Medical Center Department of Medicine, Division of Nephrology, University of California Irvine, Orange, CA.
| | - Kammi Henriksen
- Department of Pathology, University of Chicago Medical Center, Chicago, IL
| | - Kamyar Kalantar-Zadeh
- UCI Medical Center Department of Medicine, Division of Nephrology, University of California Irvine, Orange, CA
| | - Antoney Ferrey
- UCI Medical Center Department of Medicine, Division of Nephrology, University of California Irvine, Orange, CA
| | - Richard Burwick
- Department of Obstetrics and Gynecology, Maternal-Fetal Medicine, Cedars Sinai Medical Center, Los Angeles, CA
| | - Kenar D Jhaveri
- Glomerular Disease Center at Northwell Health, Division of Kidney Diseases and Hypertension, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Great Neck, NY
| |
Collapse
|
24
|
Figueiredo CR, Escoli R, Santos P, Sofia F, Lopes K. Thrombotic microangiopathy in a patient with systemic lupus erythematosus and anti-factor H autoantibodies. CEN Case Rep 2021; 11:26-30. [PMID: 34269998 DOI: 10.1007/s13730-021-00627-5] [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: 02/20/2021] [Accepted: 07/09/2021] [Indexed: 10/20/2022] Open
Abstract
Thrombotic microangiopathy (TMA) is a serious complication that may occur in patients with systemic lupus erythematosus (SLE), adversely affecting the prognosis and increasing mortality. The pathogenesis of TMA in these patients may be multifactorial and overlap between different entities may exist. We present a case of a 24-year-old man, previously diagnosed with SLE, class IV lupus nephritis, and antiphospholipid antibody syndrome, who was admitted with acute kidney injury, severe pancytopenia, and other features consistent with lupus flare. A clinical TMA diagnosis was made and the patient was treated with plasmapheresis, rituximab and immunoglobulin endovenous (EV) infusions. Hemodialysis was initiated during hospitalization and, despite the hematological recovery, the patient remained dialysis dependent. The complementary study revealed high levels of anti-factor H (fH) autoantibodies with no pathogenic mutations on complement genes (namely CFHR1 and CFHR3). Initially, the most likely cause of TMA seemed to be secondary to SLE, but the presence of anti-fH antibodies in our patient may suggest a concomitant complement-mediated TMA.
Collapse
Affiliation(s)
- Cátia Raquel Figueiredo
- Nephrology Department, Centro Hospitalar Do Médio Tejo. Av, Xanana Gusmao Ap 45, 2350-754, Torres Novas, Santarém, Portugal.
| | - Rachele Escoli
- Nephrology Department, Centro Hospitalar Do Médio Tejo. Av, Xanana Gusmao Ap 45, 2350-754, Torres Novas, Santarém, Portugal
| | - Paulo Santos
- Nephrology Department, Centro Hospitalar Do Médio Tejo. Av, Xanana Gusmao Ap 45, 2350-754, Torres Novas, Santarém, Portugal
| | - Flora Sofia
- Nephrology Department, Centro Hospitalar Do Médio Tejo. Av, Xanana Gusmao Ap 45, 2350-754, Torres Novas, Santarém, Portugal
| | - Karina Lopes
- Nephrology Department, Centro Hospitalar Do Médio Tejo. Av, Xanana Gusmao Ap 45, 2350-754, Torres Novas, Santarém, Portugal
| |
Collapse
|
25
|
The Syndromes of Thrombotic Microangiopathy: A Critical Appraisal on Complement Dysregulation. J Clin Med 2021; 10:jcm10143034. [PMID: 34300201 PMCID: PMC8307963 DOI: 10.3390/jcm10143034] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 01/12/2023] Open
Abstract
Thrombotic microangiopathy (TMA) is a rare and potentially life-threatening condition that can be caused by a heterogeneous group of diseases, often affecting the brain and kidneys. TMAs should be classified according to etiology to indicate targets for treatment. Complement dysregulation is an important cause of TMA that defines cases not related to coexisting conditions, that is, primary atypical hemolytic uremic syndrome (HUS). Ever since the approval of therapeutic complement inhibition, the approach of TMA has focused on the recognition of primary atypical HUS. Recent advances, however, demonstrated the pivotal role of complement dysregulation in specific subtypes of patients considered to have secondary atypical HUS. This is particularly the case in patients presenting with coexisting hypertensive emergency, pregnancy, and kidney transplantation, shifting the paradigm of disease. In contrast, complement dysregulation is uncommon in patients with other coexisting conditions, such as bacterial infection, drug use, cancer, and autoimmunity, among other disorders. In this review, we performed a critical appraisal on complement dysregulation and the use of therapeutic complement inhibition in TMAs associated with coexisting conditions and outline a pragmatic approach to diagnosis and treatment. For future studies, we advocate the term complement-mediated TMA as opposed to the traditional atypical HUS-type classification.
Collapse
|
26
|
Abstract
The complement cascade is an evolutionary ancient innate immune defense system, playing a major role in the defense against infections. Its function in maintaining host homeostasis on activated cells has been emphasized by the crucial role of its overactivation in ever growing number of diseases, such as atypical hemolytic uremic syndrome (aHUS), autoimmune diseases as systemic lupus erythematosus (SLE), C3 glomerulopathies (C3GN), age-related macular degeneration (AMD), graft rejection, Alzheimer disease, and cancer, to name just a few. The last decade of research on complement has extended its implication in many pathological processes, offering new insights to potential therapeutic targets and asserting the necessity of reliable, sensitive, specific, accurate, and reproducible biomarkers to decipher complement role in pathology. We need to evaluate accurately which pathway or role should be targeted pharmacologically, and optimize treatment efficacy versus toxicity. This chapter is an introduction to the role of complement in human diseases and the use of complement-related biomarkers in the clinical practice. It is a part of a book intending to give reliable and standardized methods to evaluate complement according to nowadays needs and knowledge.
Collapse
|
27
|
Erkan D. Expert Perspective: Management of Microvascular and Catastrophic Antiphospholipid Syndrome. Arthritis Rheumatol 2021; 73:1780-1790. [PMID: 34114366 DOI: 10.1002/art.41891] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 06/01/2021] [Indexed: 12/14/2022]
Affiliation(s)
- Doruk Erkan
- Hospital for Special Surgery and Weill Cornell Medicine, New York, New York
| |
Collapse
|
28
|
Chung CH, Tsai IJ, Tseng MH, Chou HH, Tain YL, Tsai JD, Chiou YY, Chiou YH, Lin CY. Clinical characteristics, triggering etiologies, and response of plasmapheresis in thrombotic microangiopathy in Taiwan. Medicine (Baltimore) 2021; 100:e25986. [PMID: 34011089 PMCID: PMC8137071 DOI: 10.1097/md.0000000000025986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/28/2021] [Indexed: 01/05/2023] Open
Abstract
Thrombotic microangiopathy (TMA) syndromes are extraordinarily diverse in clinical presentations and etiologies. However, there are still a limited number of large cohort studies focusing on the underlying causes, outcomes, and response to plasmapheresis.A retrospective study was designed to understand trigger etiologies, organ dysfunctions, clinical outcomes, and efficacy of plasmapheresis in patients with TMA. The whole population of Taiwan was set up into 2 cohorts: 875 patients with TMA in the 2006 cohort (2006-2010) and 1352 patients with TMA in the 2011 cohort (2011-2015). One hundred ninety-five patients in the 2006 cohort and 272 patients in the 2011 cohort were under plasmapheresis treatment.The common underlying etiologies were pregnancy, followed by systemic lupus erythematosus, rheumatoid arthritis, transplantation and drugs, which were significantly higher than the control group. Stroke, seizure, arterial thrombosis, vascular stenosis, hypertension, myocardial infarction, and pancreatitis were the main clinical signs and extra-renal involvements. In the multivariate regression analysis, stroke, arterial thrombosis, peripheral arterial disease, and uremia were significantly higher compared with the control group. The mortality rate in TMA under plasmapheresis was significantly higher than all TMA cases (39.33% vs 15.39% in the 2006 cohort and 39.27% vs 15.06% in the 2011 cohort).This study indicated the spectrum of underlying causes, extra-renal characteristics, and the response to plasmapheresis of patients with TMA in Taiwan. Of note, the poor clinical outcomes of plasmapheresis in patients with TMA might highlight the masked underlying etiology or worse disease condition that should be noticed.
Collapse
Affiliation(s)
- Ching-Hu Chung
- Department of Medicine, Mackay Medical College, New Taipei City
| | - I-Jung Tsai
- Division of Nephrology, Department of Pediatrics, National Taiwan University Children Hospital, Taipei
| | - Min-Hua Tseng
- Division of Nephrology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Department of Pediatrics, Xiamen Chang Gung Hospital, Ximen, China
| | - Hsin-Hsu Chou
- Department of Pediatrics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi
- Department of Bioinformatics and Medical Engineering, College of Information and Electrical Engineering, Asia University, Taichung
| | - You-Lin Tain
- Division of Pediatric Nephrology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Kaohsiung
| | - Jeng-Daw Tsai
- Division of Nephrology, Department of Pediatrics, MacKay Children's Hospital, Taipei
| | - Yuan-Yow Chiou
- Departments of Pediatrics, Institute of Clinical Medicine, National Cheng Kung University Medical College and Hospital, Tainan 704
| | - Yee-Hsuan Chiou
- Department of Pediatrics, Kaohsiung Veterans General Hospital
- Department of Medical Technology, Fooyin University, Kaohsiung 831
| | - Ching-Yuang Lin
- Clinical Immunological Center, Children's Hospital, China Medical University, Taichung, Taiwan
| |
Collapse
|
29
|
Nephrotic syndrome in a 7-year-old girl with atypical hemolytic uremic syndrome relapse: Answers. Pediatr Nephrol 2021; 36:843-847. [PMID: 32666367 DOI: 10.1007/s00467-020-04700-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 06/24/2020] [Indexed: 10/23/2022]
|
30
|
Torres EA, Chang Y, Desai S, Chang I, Zuckerman JE, Burwick R, Kalantar-Zadeh K, Hanna RM. Complement-Mediated Thrombotic Microangiopathy Associated with Lupus Nephritis Treated with Eculizumab: A Case Report. Case Rep Nephrol Dial 2021; 11:95-102. [PMID: 33977097 PMCID: PMC8077465 DOI: 10.1159/000512227] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/20/2020] [Indexed: 11/19/2022] Open
Abstract
Thrombotic microangiopathies (TMAs) involve multiple organ systems due to the presence of microangiopathic hemolysis. One such condition, atypical hemolytic uremic syndrome (aHUS), is a complement-mediated process that is part of a spectrum of disorders that have underlying complement dysfunction of the alternative pathway due to overactivity or decreased self-nonself discrimination by innate immunity. Complement-amplifying conditions such as pregnancy may unmask a diagnosis of aHUS. We present an important case of a pregnant 23-year-old Hispanic female who presented in mid-gestation (21 weeks) with an initial diagnosis of systemic lupus erythematosus (SLE) complicated by aHUS. She met clinical criteria for aHUS on presentation and was found to have a pathogenic CFHR1–3 homozygous deletion. She has been treated with intravenous and oral steroids, cyclophosphamide, subsequently also with plasma exchange, and finally with eculizumab with partial improvement in renal function. This case adds to the emerging literature showing that SLE and aHUS (or complement-mediated TMA) can be successfully treated with C5 blockade.
Collapse
Affiliation(s)
| | - Yongen Chang
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California, Irvine, California, USA
| | - Sheetal Desai
- Division of Rheumatology, Department of Medicine, University of California, Irvine, California, USA
| | - Ian Chang
- Division of Rheumatology, Department of Medicine, University of California, Irvine, California, USA
| | - Jonathan E Zuckerman
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | - Richard Burwick
- Department of Obstetrics and Gynecology, Maternal-Fetal Medicine, Cedars Sinai Medical Center, Los Angeles, California, USA
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California, Irvine, California, USA
| | - Ramy M Hanna
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California, Irvine, California, USA
| |
Collapse
|
31
|
Vanood A, Owen R, Maraskine M, Schreiber A, Pokharel R, Cohen L. Collapsing FSGS with Concurrent Class 2 and 3 Lupus Nephritis: A Case Report and Review of the Literature. Case Rep Nephrol Dial 2021; 11:16-25. [PMID: 33708796 PMCID: PMC7923702 DOI: 10.1159/000510840] [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: 03/17/2020] [Accepted: 08/12/2020] [Indexed: 12/03/2022] Open
Abstract
Lupus nephritis (LN) and the collapsing variant of focal segmental glomerulosclerosis (cFSGS) are separate histologic diagnoses that are generally thought to have separate etiologies. We describe the presentation of a 20-year-old African American female with advanced renal failure (creatinine 7.16 mg/dL), nephrotic-range proteinuria, and a 30-pound weight loss. Renal biopsy demonstrated class 2 and 3 LN as well as cFSGS. A review of the current literature demonstrates that the dual diagnosis of LN and cFSGS may not be as rare as previously understood. Whether the presence of one of these pathophysiologic processes predisposes a patient to the development of the other, or whether genetic variation increases the risk for development of both conditions, remains unclear. Currently there is no standard therapy to manage these patients, and overall renal prognosis is poor.
Collapse
Affiliation(s)
- Aimen Vanood
- Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA
| | - Ryan Owen
- Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA.,Department of Internal Medicine, Beaumont Health System, Royal Oak, Michigan, USA
| | - Marina Maraskine
- Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA.,Department of Internal Medicine, Beaumont Health System, Royal Oak, Michigan, USA
| | - Ariyon Schreiber
- Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA
| | - Rajesh Pokharel
- Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA.,Department of Internal Medicine, Beaumont Health System, Royal Oak, Michigan, USA
| | - Lisa Cohen
- Oakland University William Beaumont School of Medicine, Rochester, Michigan, USA.,Department of Internal Medicine, Beaumont Health System, Royal Oak, Michigan, USA.,Department of Nephrology, Beaumont Health System, Royal Oak, Michigan, USA
| |
Collapse
|
32
|
Kim MJ, Lee H, Kim YH, Jin SY, Kim HJ, Oh D, Jeon JS. Eculizumab therapy on a patient with co-existent lupus nephritis and C3 mutation-related atypical haemolytic uremic syndrome: a case report. BMC Nephrol 2021; 22:86. [PMID: 33691638 PMCID: PMC7944615 DOI: 10.1186/s12882-021-02293-2] [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: 11/25/2020] [Accepted: 03/03/2021] [Indexed: 11/12/2022] Open
Abstract
Background Thrombotic microangiopathy (TMA), a rare but serious complication of systemic lupus erythematosus (SLE), is associated with poor outcomes to conventional immunosuppressive therapy. Recently, eculizumab, a humanised monoclonal antibody that blocks the complement factor 5, has been known to effectively treat atypical haemolytic uremic syndrome (aHUS). Here, we report a case of aHUS co-existing with lupus nephritis that was successfully treated with eculizumab. Case presentation A 23-year-old man presented with abdominal pain and diarrhoea. Initial laboratory tests have shown thrombocytopaenia, microangiopathic haemolytic anaemia, and acute kidney injury. Immunologic tests were consistent with SLE. Kidney biopsy have revealed lupus nephritis class IV-G with TMA. Genetic analysis have shown complement C3 gene mutations, which hints the co-existence of lupus nephritis with aHUS, a form of complement-mediated TMA. Although initial treatment with haemodialysis, plasma exchange, and conventional immunosuppressive therapy (steroid and cyclophosphamide) did not appreciably improve kidney function and thrombocytopaenia, the patient was able to respond to eculizumab therapy. Conclusions Due to the similar features of TMA and SLE, clinical suspicion of aHUS in patients with lupus nephritis is important for early diagnosis and prompt management. Timely administration of eculizumab should be considered as a treatment option for aHUS in lupus nephritis patients to yield optimal therapeutic outcomes.
Collapse
Affiliation(s)
- Mi Jung Kim
- Asan Yuri Hospital, 179 Dogomyeon-ro, Dogo-myeon, 31551, Asan-si, Chungcheongnam-do, Republic of Korea
| | - Haekyung Lee
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, 04401, Seoul, Republic of Korea
| | - Yon Hee Kim
- Department of Pathology, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, 04401, Seoul, Republic of Korea
| | - So Young Jin
- Department of Pathology, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, 04401, Seoul, Republic of Korea
| | - Hee-Jin Kim
- Department of Laboratory Medicine & Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, 06531, Seoul, Republic of Korea
| | - Doyeun Oh
- Department of Internal Medicine, CHA Bundang Medical Center, CHA University, 59 Yatapro, Bundang- gu, 13496, Seonganm-si, Gyeonggi, Korea
| | - Jin Seok Jeon
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, 04401, Seoul, Republic of Korea.
| |
Collapse
|
33
|
Su CF, Liao HT, Tsai CY. WT1 gene mutations in systemic lupus erythematosus with atypical haemolytic uremic syndrome. Rheumatology (Oxford) 2021; 60:e81-e82. [PMID: 32893307 DOI: 10.1093/rheumatology/keaa474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Chin-Fang Su
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hsien-Tzung Liao
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, College of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chang-Youh Tsai
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, College of Medicine, National Yang-Ming University, Taipei, Taiwan
| |
Collapse
|
34
|
Abstract
Purpose of Review Complement activation is a key event in the pathogenesis of tissue inflammation and injury in systemic lupus erythematosus (SLE). This review is aimed at comparing the usefulness of measurement of complement proteins in serum/plasma (C3, C4) to complement activation (split) products in plasma and on circulating blood cells for SLE diagnosis, disease monitoring, and prognosis. Recent Findings Complement split products, C3dg, iC3b, and C4d, are elevated in SLE, and C3dg/C3 and iC3b/C3 ratios correlate with active SLE. C4d also is higher in patients with lupus nephritis. An elevated level of the alternative pathway split product, Bb, in early lupus pregnancy is a predictor of adverse outcomes in SLE patients with antiphospholipid antibodies. Elevated levels of cell-bound complement activation products (CB-CAPs), namely, B cell-bound C4d (BC4d) and erythrocyte-bound C4d (EC4d), within a multiparameter assay panel, may predict transition to SLE more than other lupus biomarkers. EC4d better correlates with lupus disease activity than low plasma complement levels. Elevated platelet-bound C4d (PC4d) correlates with thrombosis in SLE. Both EC4d and PC4d are increased in primary and secondary anti-phospholipid syndrome, and anti-beta2glycoproteinI antibodies may directly activate the complement system. Summary Abnormal levels of plasma complement split products and CB-CAPs support complement activation as an important pathogenetic mechanism in SLE and the antiphospholipid syndromes. These tests show promise for the diagnosis of SLE and monitoring of disease activity.
Collapse
Affiliation(s)
- Arthur Weinstein
- Loma Linda University, Loma Linda, CA, USA. .,Georgetown University, Washington, DC, USA. .,Exagen Inc., Vista, CA, USA.
| | | | | |
Collapse
|
35
|
Tseng MH, Fan WL, Liu H, Yang CY, Ding JJ, Lee HJ, Huang SM, Lin SH, Huang JL. Complement Factor I Mutation May Contribute to Development of Thrombotic Microangiopathy in Lupus Nephritis. Front Med (Lausanne) 2021; 7:621609. [PMID: 33614676 PMCID: PMC7892619 DOI: 10.3389/fmed.2020.621609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/31/2020] [Indexed: 12/30/2022] Open
Abstract
Objective: Renal thrombotic microangiopathy (TMA) is associated with complement overactivation and poor outcome in patients with lupus nephritis (LN). The role of genetic makeup of complement system in these patients remains to be elucidated. Methods: The clinical and laboratory characteristics of 100 patients with LN during 2010-2017 were retrospectively analyzed. LN patients with renal TMA and condition-matched LN patients without renal TMA were studied. Twenty normal subjects were also enrolled for comparison. Whole exome sequence followed by Sanger sequence was used in our study cohort. Results: Eight patients with renal TMA and eight condition-matched patients were enrolled from 100 LN patients with mean age 11.2 ± 2.0 years. Compared with condition-matched LN patients without renal TMA, LN patients with renal TMA exhibited statistically higher serum urea. Although most patients with renal TMA responded to plasma exchange, they had significantly higher relapse rate of nephritis, lower remission rate, and higher risk of end-stage renal disease and mortality. Compared with patients without renal TMA and normal subjects, those with renal TMA had significantly lower serum complement factor H (CFH) and plasma ADAMTS13 activity. Molecular analysis of all 100 patients with LN uncovered that three patients with renal TMA harbored mutations, two missense and non-sense, on CFI and CFHR2. The non-sense mutation, E302X, on CFI may impair its interaction C3b/CFH complex by loss of the heavy chain of complement factor I on simulation model. Conclusion: In addition to low serum CFH level and plasma ADAMTS13 activity, defects in genes responsible for complement regulatory proteins may contribute to the development of renal TMA in patients with LN.
Collapse
Affiliation(s)
- Min-Hua Tseng
- Division of Nephrology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Pediatrics, Xiamen Chang Gung Hospital, Ximen, China
| | - Wen-Lang Fan
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hsuan Liu
- College of Medicine, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan.,Division of Colon and Rectal Surgery, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chia-Yu Yang
- College of Medicine, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan.,Department of Microbiology and Immunology, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Jhao-Jhuang Ding
- Department of Pediatrics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hwei-Jen Lee
- Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan
| | - Shih-Ming Huang
- Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan
| | - Shih-Hua Lin
- Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Jing-Long Huang
- Division of Asthma, Allergy, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| |
Collapse
|
36
|
Chen W, Liang S, Zuo K, Yang L, Zeng C, Hu W. Clinicopathological features and outcomes of SLE patients with renal injury characterised by thrombotic microangiopathy. Clin Rheumatol 2021; 40:2735-2743. [PMID: 33543375 DOI: 10.1007/s10067-021-05627-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 01/12/2021] [Accepted: 01/31/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Non-immune complex (IC)-mediated renal thrombotic microangiopathy (TMA) has been reported in patients with systemic lupus erythematosus (SLE), but most studies included patients with both renal TMA and IC-mediated lupus nephritis (LN). In this study, the clinicopathological features and outcomes of renal injury characterised by only renal TMA were retrospectively analyzed. METHODS Patients with glomerular and/or vascular TMA in the absence of subendothelial or epithelial immune deposits were screened from 2,332 biopsied of SLE patients. The TMA lesions were divided into glomerular, vascular or both. Acute tubular-interstitial injury was semi-quantitatively analyzed. The podocyte foot process effacement (FPE) was measured by electronic microscopy. RESULTS Two hundred fifty-seven (11.0%) renal biopsies revealed TMA, among which 237 biopsies showed TMA coexisting with LN, and 20 (0.9%) biopsies had only renal TMA without or with only mesangial immune deposits. All patients manifested with acute kidney injury and haematological disorders. Among them, 11 (55%) required renal replacement therapy, 12 (60%) had nephrotic syndrome and 13 (65.0%) showed microvascular haemolytic anaemia with thrombocytopenia. Seventeen (85%) biopsies revealed both glomerular TMA and vascular TMA, two had only glomerular TMA and one had vascular TMA. Eight (40%) had no glomerular immune deposits and 12 (60%) showed only mesangial immune deposits. The acute tubulointerstitial injury in patients requiring dialysis was more severe than those not needing dialysis ((43.6 ± 24.9) % vs. (21.7 ± 20.1) %, p = 0.047). FPE of podocytes was positively correlated with proteinuria (r2 = 0.347, p = 0.006). All patients received high-dose methylprednisolone pulse therapy. Four patients received plasma exchange. The renal function of 11 patients requiring dialysis initially recovered after 16.0 (interquartile range [IQR] 9.0, 30.0) days of treatment. During the follow-up of 58.0 (IQR 36.0, 92.3) months, remission was achieved in 19 (95%) patients; only one patient had no response. No patient died or progressed to end-stage renal disease; six patients (30%) relapsed. CONCLUSION Renal TMA, usually accompanying severe renal injury, was not uncommon in SLE patients with renal disease and should be distinguished from immune complex-mediated severe classes of LN. Early intensive immunosuppressive treatment may be associated with a good long-term renal outcome. Key Points • Most previous reports of renal TMA in SLE patients were associated with severe types of immune complex-mediated lupus nephritis; • Renal TMA with glomerular pauci-immune or only mesangial immune deposits was found in SLE patients and clinically presented with severe acute renal injury but good renal outcome; • Renal TMA should be considered as a unique type of SLE-associated renal injury.
Collapse
Affiliation(s)
- Wencui Chen
- National Clinical Research Center of Kidney Diseases, Jinling Clinical Medical College of Nanjing Medical University, No. 305, Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Shaoshan Liang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Jinling Clinical Medical College of Nanjing Medical University, No. 305, Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Ke Zuo
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Jinling Clinical Medical College of Nanjing Medical University, No. 305, Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Liu Yang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Jinling Clinical Medical College of Nanjing Medical University, No. 305, Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Caihong Zeng
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Jinling Clinical Medical College of Nanjing Medical University, No. 305, Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Weixin Hu
- National Clinical Research Center of Kidney Diseases, Jinling Clinical Medical College of Nanjing Medical University, No. 305, Zhongshan East Road, Nanjing, 210002, Jiangsu, China.
| |
Collapse
|
37
|
Galindo-Izquierdo M, Pablos Alvarez JL. Complement as a Therapeutic Target in Systemic Autoimmune Diseases. Cells 2021; 10:cells10010148. [PMID: 33451011 PMCID: PMC7828564 DOI: 10.3390/cells10010148] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 12/16/2022] Open
Abstract
The complement system (CS) includes more than 50 proteins and its main function is to recognize and protect against foreign or damaged molecular components. Other homeostatic functions of CS are the elimination of apoptotic debris, neurological development, and the control of adaptive immune responses. Pathological activation plays prominent roles in the pathogenesis of most autoimmune diseases such as systemic lupus erythematosus, antiphospholipid syndrome, rheumatoid arthritis, dermatomyositis, and ANCA-associated vasculitis. In this review, we will review the main rheumatologic autoimmune processes in which complement plays a pathogenic role and its potential relevance as a therapeutic target.
Collapse
|
38
|
Thrombotic Microangiopathy among Hospitalized Patients with Systemic Lupus Erythematosus in the United States. Diseases 2020; 9:diseases9010003. [PMID: 33374384 PMCID: PMC7838946 DOI: 10.3390/diseases9010003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 12/03/2022] Open
Abstract
Background: This study aimed to evaluate thrombotic microangiopathy’s (TMA) incidence, risk factors, and impact on outcomes and resource use in hospitalized patients with systemic lupus erythematosus (SLE). Methods: We used the National Inpatient Sample to construct a cohort of hospitalized patients with SLE from 2003–2014. We compared clinical characteristics, in-hospital treatments, outcomes, and resource use between SLE patients with and without TMA. Results: Of 35,745 hospital admissions for SLE, TMA concurrently presented or developed in 188 (0.5%) admissions. Multivariable analysis showed that age ≥ 40 years and Hispanics were significantly associated with decreased risk of TMA, whereas Asian/Pacific Islanders and history of chronic kidney disease were significantly associated with increased risk of TMA. TMA patients required more kidney biopsy, plasmapheresis, mechanical ventilation, and renal replacement therapy. TMA was significantly associated with increased risk of in-hospital mortality and acute conditions including hemoptysis, glomerulonephritis, encephalitis/myelitis/encephalopathy, hemolytic anemia, pneumonia, urinary tract infection, sepsis, ischemic stroke, seizure, and acute kidney injury. The length of hospital stays and hospitalization cost was also significantly higher in SLE with TMA patients. Conclusion: TMA infrequently occurred in less than 1% of patients admitted for SLE, but it was significantly associated with higher morbidity, mortality, and resource use.
Collapse
|
39
|
Gkrouzman E, Smith MH, Ghosh N, Laurence JC, Seshan SV, Vaughn JL, Levine AB, Bass AR, Erkan D. Recurrent Complement-Mediated Thrombotic Microangiopathy in a Patient with Systemic Lupus Erythematosus: A Clinical Pathology Conference Held by the Division of Rheumatology at Hospital for Special Surgery. HSS J 2020; 16:507-514. [PMID: 33380989 PMCID: PMC7749916 DOI: 10.1007/s11420-020-09761-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/17/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Elena Gkrouzman
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ,Weill Cornell Medicine, New York, NY USA
| | - Melanie H. Smith
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ,Weill Cornell Medicine, New York, NY USA
| | - Nilasha Ghosh
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ,Weill Cornell Medicine, New York, NY USA
| | | | | | | | | | - Anne R. Bass
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ,Weill Cornell Medicine, New York, NY USA
| | - Doruk Erkan
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ,Weill Cornell Medicine, New York, NY USA
| |
Collapse
|
40
|
Trimarchi H, Coppo R. COVID-19 and acute kidney injury in pediatric subjects: is there a place for eculizumab treatment? J Nephrol 2020; 33:1119-1120. [PMID: 32996110 PMCID: PMC7523686 DOI: 10.1007/s40620-020-00859-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hernán Trimarchi
- Nephrology Service, Hospital Británico de Buenos Aires, Buenos Aires, Argentina
| | - Rosanna Coppo
- Fondazione Ricerca Molinette, Regina Margherita Hospital, Turin, Italy.
| |
Collapse
|
41
|
Hoevenaar M, Goossens D, Roorda J. Angiotensin-converting enzyme 2, the complement system, the kallikrein-kinin system, type-2 diabetes, interleukin-6, and their interactions regarding the complex COVID-19 pathophysiological crossroads. J Renin Angiotensin Aldosterone Syst 2020; 21:1470320320979097. [PMID: 33283602 PMCID: PMC7724427 DOI: 10.1177/1470320320979097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 11/11/2020] [Indexed: 12/15/2022] Open
Abstract
Because of the current COVID-19-pandemic, the world is currently being held hostage in various lockdowns. ACE2 facilitates SARS-CoV-2 cell-entry, and is at the very center of several pathophysiological pathways regarding the RAAS, CS, KKS, T2DM, and IL-6. Their interactions with severe COVID-19 complications (e.g. ARDS and thrombosis), and potential therapeutic targets for pharmacological intervention, will be reviewed.
Collapse
Affiliation(s)
| | | | - Janne Roorda
- Medical Doctor, General Practice
van Dijk, Oisterwijk, The Netherlands
| |
Collapse
|
42
|
Tselios K, Gladman DD, Taheri C, Su J, Urowitz MB. Factors Associated With Rapid Progression to Endstage Kidney Disease in Lupus Nephritis. J Rheumatol 2020; 48:228-231. [PMID: 33259331 DOI: 10.3899/jrheum.200161] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2020] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Lupus nephritis (LN) may lead to endstage kidney disease (ESKD) in 22% of patients over a period of 15 years, with the risk being particularly higher in diffuse proliferative forms. The rate of kidney function decline varies. However, a catastrophic course leading to ESKD within a few years from onset is uncommon. The aim of the present study was to assess the factors associated with rapid progression to ESKD in patients with LN. METHODS Patients from the Toronto Lupus Clinic with biopsy-proven LN at presentation and estimated glomerular filtration rate (eGFR) 60 mL/min/1.73 m2, who developed ESKD within 3 years were retrieved. Pathology reports were reviewed with particular emphasis on distinct histopathologic features. Demographic, clinical, laboratory, and therapeutic variables were also analyzed. RESULTS Ten patients (1.8% of the total LN population) developed ESKD within 3 years of diagnosis. Their mean age was 34.2 ± 7.3 years, mean time to ESKD 19.2 ± 12.4 months, initial eGFR 90.2 ± 24.9 mL/min/1.73 m2, proteinuria 2.7 ± 1.04 g/24 h. The median rate of kidney function decline was > 43 mL/min/1.73 m2/year. One patient had LN class III, 5 had LN class IV, 2 had membranous LN (class V), and another 2 had mixed IV/V. Moreover, 2 patients had extensive thrombotic microangiopathy, 1 collapsing glomerulonephritis, and 1 concomitant antiglomerular basement membrane (anti-GBM) nephropathy. Four patients showed no unusual kidney pathology; all of them had severe noncompliance (discontinued all medications to follow alternative treatment). CONCLUSION Catastrophic progression to ESKD is uncommon in LN. The major associated factors are poor compliance and distinct histopathologic features such as thrombotic microangiopathy, collapsing glomerulopathy, and concomitant anti-GBM nephropathy.
Collapse
Affiliation(s)
- Konstantinos Tselios
- K. Tselios, MD, PhD, D.D. Gladman, MD, FRCPC, C. Taheri, BHSc, J. Su, MB, MSc, M.B. Urowitz, MD, FRCPC, University of Toronto Lupus Clinic, Centre of Prognosis Studies in the Rheumatic Diseases, University Health Network, Toronto, Ontario, Canada
| | - Dafna D Gladman
- K. Tselios, MD, PhD, D.D. Gladman, MD, FRCPC, C. Taheri, BHSc, J. Su, MB, MSc, M.B. Urowitz, MD, FRCPC, University of Toronto Lupus Clinic, Centre of Prognosis Studies in the Rheumatic Diseases, University Health Network, Toronto, Ontario, Canada
| | - Cameron Taheri
- K. Tselios, MD, PhD, D.D. Gladman, MD, FRCPC, C. Taheri, BHSc, J. Su, MB, MSc, M.B. Urowitz, MD, FRCPC, University of Toronto Lupus Clinic, Centre of Prognosis Studies in the Rheumatic Diseases, University Health Network, Toronto, Ontario, Canada
| | - Jiandong Su
- K. Tselios, MD, PhD, D.D. Gladman, MD, FRCPC, C. Taheri, BHSc, J. Su, MB, MSc, M.B. Urowitz, MD, FRCPC, University of Toronto Lupus Clinic, Centre of Prognosis Studies in the Rheumatic Diseases, University Health Network, Toronto, Ontario, Canada
| | - Murray B Urowitz
- K. Tselios, MD, PhD, D.D. Gladman, MD, FRCPC, C. Taheri, BHSc, J. Su, MB, MSc, M.B. Urowitz, MD, FRCPC, University of Toronto Lupus Clinic, Centre of Prognosis Studies in the Rheumatic Diseases, University Health Network, Toronto, Ontario, Canada.
| |
Collapse
|
43
|
Cervera R, Rodríguez-Pintó I, Legault K, Erkan D. 16th International Congress on Antiphospholipid Antibodies Task Force Report on Catastrophic Antiphospholipid Syndrome. Lupus 2020; 29:1594-1600. [DOI: 10.1177/0961203320951260] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The Task Force on Catastrophic Antiphospholipid Syndrome (CAPS) met again on occasion of the 16th International Congress on Antiphospholipid Antibodies (aPL) that was held in Manchester, England, in September 2019. Its aims were to assess the up-to-date knowledge on pathogenesis, clinical and laboratory features, diagnosis and classification, precipitating factors, and treatment of CAPS. This article summarizes the main aspects that were presented during the Task Force meeting at that Congress.
Collapse
Affiliation(s)
- Ricard Cervera
- Department of Autoimmune Diseases, Hospital Clínic, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Catalonia, Spain
| | - Ignasi Rodríguez-Pintó
- Systemic Autoimmune Diseases Unit, Hospital Mútua de Terrassa, Terrassa, Catalonia, Spain
| | - Kim Legault
- Division of Rheumatology, Department of Medicine, McMaster University, Hamilton, Canada
| | - Doruk Erkan
- Barbara Volcker Center for Women and Rheumatic Diseases, Hospital for Special Surgery, Weill Cornell Medicine, New York, USA
| |
Collapse
|
44
|
Chen WC, Ko PS, Wang HY, Liu YC, Hsiao LT, Gau JP, Liu JH. Difference in thrombotic microangiopathy between concurrently and previously diagnosed systemic lupus erythematosus. J Chin Med Assoc 2020; 83:743-750. [PMID: 32371665 DOI: 10.1097/jcma.0000000000000344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Thrombotic microangiopathy (TMA) syndromes are potentially life-threatening complications and are defined as integrated syndromes of microangiopathic hemolytic anemia, thrombocytopenia, and organ injury. Systemic lupus erythematosus (SLE) is an autoimmune disease that can affect various organs, including the hematopoietic system. SLE can complicate with TMA and can be categorized into two distinct groups by chronological association: TMA occurring as the initial presentation and leading to a diagnosis of SLE concurrently (TMA-cSLE) or TMA developing in patients previously diagnosed as having SLE (TMA-pSLE). We examined the differences in clinical characteristics, treatment responses, and clinical outcomes between these groups. METHODS We reviewed data of patients diagnosed as having TMA and SLE at Taipei Veterans General Hospital between 2002 and 2013. We included 29 patients: 8 and 21 in TMA-cSLE and TMA-pSLE groups, respectively. All underwent plasma exchange. Patients' demographic and clinical characteristics, disease activity, and treatment modality were summarized. RESULTS Overall survival (OS) from SLE or TMA diagnosis was poor for the TMA-cSLE group. Median OS from SLE diagnosis was 2.9 months in the TMA-cSLE group and 103.5 months in the TMA-pSLE group (p < 0.001). Median OS from TMA diagnosis was 2.9 months in the TMA-cSLE group and 10.7 months in the TMA-pSLE group (p = 0.58). Time to TMA remission after treatment appeared longer in the TMA-cSLE group (38.00 vs 10.76 days). Multivariate Cox analysis revealed TMA-cSLE and anti-RNP positivity were independent risk factors for mortality in SLE patients with TMA. CONCLUSION The occurrence of TMA with SLE is rare, and its vigorous course results in high mortality and morbidity rates. In patients without a history of autoimmune disease, early suspicion of TMA and working-up for SLE under this condition are vital. Early recognition of TMA-cSLE and prompt plasma exchange with upfront immunosuppressive therapies for TMA-cSLE patients or anti-RNP-positive patients may improve their prognosis.
Collapse
Affiliation(s)
- Wen-Chun Chen
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Po-Shen Ko
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Hao-Yuan Wang
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Yao-Chung Liu
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Liang-Tsai Hsiao
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Jyh-Pyng Gau
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Jin-Hwang Liu
- Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| |
Collapse
|
45
|
Wright RD, Bannerman F, Beresford MW, Oni L. A systematic review of the role of eculizumab in systemic lupus erythematosus-associated thrombotic microangiopathy. BMC Nephrol 2020; 21:245. [PMID: 32605540 PMCID: PMC7329551 DOI: 10.1186/s12882-020-01888-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 06/08/2020] [Indexed: 12/19/2022] Open
Abstract
Background Lupus nephritis (LN) is a severe consequence of systemic lupus erythematosus (SLE) that affects approximately 40% of patients. Pathogenic immune complexes that are characteristic of LN deposit in the kidney and activate immune mediated pathways including the complement system. Complete remission rates in LN are approximately 44% highlighting the need for new treatment strategies in these patients. Eculizumab is a fully humanised IgG2/IgG4 monoclonal antibody directed at C5 and thus prevents the formation of the terminal complement complex. Eculizumab is successfully used in atypical haemolytic uraemic syndrome (aHUS) and paroxysomal nocturnal haemoglobinuria (PNH) but it is not standardly used in LN. The aim of this project was to determine whether there is any role for eculizumab as adjunctive therapy in LN. Methods Using a predefined search strategy on Ovid MEDLINE and EMBASE the literature was reviewed systematically to identify studies in which eculizumab had been used to treat patients with SLE. All patients were included that were treated with complement inhibitors. Favourable outcome in this study was defined as resolution of symptoms that led to treatment, discharge from hospital or recovery of renal function. Patients were excluded if there was no outcome data or if complement inhibition was unrelated to their SLE. Results From 192 abstracts screened, 14 articles were identified, involving 30 patients. All SLE patients administered eculizumab were treated for thrombotic microangiopathy (TMA) secondary to LN diagnosed either histologically (66%) or as part of a diagnosis of aHUS (73%). 93% of patients had a favourable outcome in response to eculizumab treatment, of which 46% had a favourable outcome and successfully stopped treatment without relapse in symptoms during a median follow up of 7 months. Three patients (10%) reported adverse outcomes related to eculizumab therapy. Conclusions Scientific evidence supports the involvement of complement in the pathogenesis of LN however the role of complement inhibition in clinical practice is limited to those with TMA features. This systematic review showed that in cases of LN complicated with TMA, eculizumab seems to be a very efficacious therapy. Further evidence is required to determine whether patients with refractory LN may benefit from adjunctive complement inhibition.
Collapse
Affiliation(s)
- Rachael D Wright
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, member of Liverpool Health Partners, Eaton Road, Liverpool, L12 2AP, UK.
| | - Fariba Bannerman
- Library and Knowledge Service, Alder Hey Children's NHS Foundation Trust, member of Liverpool Health Partners, Liverpool, UK
| | - Michael W Beresford
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, member of Liverpool Health Partners, Eaton Road, Liverpool, L12 2AP, UK.,Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, member of Liverpool Health Partners, Liverpool, UK
| | - Louise Oni
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, member of Liverpool Health Partners, Eaton Road, Liverpool, L12 2AP, UK.,Department of Paediatric Nephrology, Alder Hey Children's NHS Foundation Trust, member of Liverpool Health Partners, Liverpool, UK
| |
Collapse
|
46
|
Hanna RM, Hou J, Hasnain H, Arman F, Selamet U, Wilson J, Olanrewaju S, Zuckerman JE, Barsoum M, Yabu JM, Kurtz I. Diverse Clinical Presentations of C3 Dominant Glomerulonephritis. Front Med (Lausanne) 2020; 7:293. [PMID: 32695788 PMCID: PMC7338606 DOI: 10.3389/fmed.2020.00293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 05/22/2020] [Indexed: 12/23/2022] Open
Abstract
C3 dominant immunofluorescence staining is present in a subset of patients with idiopathic immune complex membranoproliferative glomerulonephritis (iMPGN). It is increasingly recognized that iMPGN may be complement driven, as are cases of "typical" C3 glomerulopathy (C3G). In both iMPGN and C3G, a frequent membranoproliferative pattern of glomerular injury may indicate common pathogenic mechanisms via complement activation and endothelial cell damage. Dysregulation of the alternative complement pathway and mutations in certain regulatory factors are highly implicated in C3 glomerulopathy (which encompasses C3 glomerulonephritis, dense deposit disease, and cases of C3 dominant MPGN). We report three cases that demonstrate that an initial biopsy diagnosis of iMPGN does not exclude complement alterations similar to the ones observed in patients with a diagnosis of C3G. The first patient is a 39-year-old woman with iMPGN and C3 dominant staining, with persistently low C3 levels throughout her course. The second case is a 22-year-old woman with elevated anti-factor H antibodies and C3 dominant iMPGN findings on biopsy. The third case is a 25-year-old woman with C3 dominant iMPGN, dense deposit disease, and a crescentic glomerulonephritis on biopsy. We present the varied phenotypic variations of C3 dominant MPGN and review clinical course, complement profiles, genetic testing, treatment course, and peri-transplantation plans. Testing for complement involvement in iMPGN is important given emerging treatment options and transplant planning.
Collapse
Affiliation(s)
- Ramy M Hanna
- Division of Nephrology, Department of Medicine, UCI School of Medicine, Irvine, CA, United States.,Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Jean Hou
- Department of Pathology and Laboratory Medicine, Cedars Sinai Medical Center, Los Angeles, CA, United States
| | - Huma Hasnain
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Farid Arman
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Umut Selamet
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States.,Division of Renal Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - James Wilson
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Samuel Olanrewaju
- David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Jonathan E Zuckerman
- Department of Pathology and Laboratory Medicine, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Marina Barsoum
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Julie M Yabu
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States
| | - Ira Kurtz
- Department of Medicine, Division of Nephrology, David Geffen UCLA School of Medicine, Los Angeles, CA, United States.,UCLA Brain Research Institute, Los Angeles, CA, United States
| |
Collapse
|
47
|
Nasonov EL, Reshetnyak TM, Alekberova ZS. [Thrombotic microangiopathy in rheumatology: a link between thrombosis and autoimmunity]. TERAPEVT ARKH 2020; 92:4-14. [PMID: 32598770 DOI: 10.26442/00403660.2020.05.000697] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Indexed: 12/16/2022]
Abstract
Uncontrolled hypercoagulation and inflammation (thromboinflammation), which are both independent and closely related and amplifying each other pathological processes, form the basis for pathogenesis of a wide range of diseases and complications, including immuno-inflammatory (autoimmune) rheumatic diseases, with the development of potentially fatal injuries of internal organs. Thrombotic microangiopathy is one of the most prominent prototypes of thromboinflammatory pathological conditions. The close link between environmental factors, hemostasis genetic defects and the complement system, inflammation and autoimmunity as pathogenetic mechanisms of microthrombosis draws particular attention to studying thrombotic microangiopathy in immuno-inflammatory rheumatic diseases, primarily systemic lupus erythematosus, antiphospholipid syndrome and scleroderma renal crisis. In future, these studies may be important for expanding the idea of the role of autoimmune mechanisms in pathogenesis of critical hemostasis disorders in human diseases, and for developing new approaches to therapy. Recently, special attention has been paid to the treatment of systemic lupus erythematosus and antiphospholipid syndrome with eculizumab, which is humanized monoclonal IgG2/4k antibody that blocks the complement component C5a and the membrane attack complex (C5b-9) formation, and which is registered for the treatment of atypical hemolytic uremic syndrome, paroxysmal nocturnal hemoglobinuria, as well as severe forms of myasthenia gravis and neuromyelitis optica. Further studies in this direction will create prerequisites for improving the prognosis not only in patients with orphan disorders, but also for widespread human diseases.
Collapse
|
48
|
Weiner SM, Waldherr R. Stellenwert der Nierenbiopsie bei Lupusnephritis. AKTUEL RHEUMATOL 2020. [DOI: 10.1055/a-1121-8852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
ZusammenfassungBei systemischem Lupus erythematodes (SLE) findet sich häufig eine renale Mitbeteiligung, der verschiedene pathogenetische Mechanismen zugrunde liegen. Die Nierenbeteiligung hat einen negativen Einfluss auf die Prognose des SLE, insbesondere bei progredienter Niereninsuffizienz. Eine Nierenbiopsie ist aufgrund der Heterogenität der Nierenbeteiligung und der damit verbundenen therapeutischen Konsequenzen unabdingbar. Sie kann durch nicht-invasive Untersuchungen wie die Urindiagnostik oder Serologie nicht ersetzt werden, da das Ausmaß der Proteinurie oder der Mikrohämaturie keine sicheren Rückschlüsse auf den Schweregrad, die Pathogenese und die Prognose der Nierenbeteiligung erlauben. Die Nierenbiopsie gibt neben der korrekten Klassifikation der Lupusnephritis (LN) Informationen über die Mitbeteiligung des Niereninterstitium, der intrarenalen Gefäße und der Aktivität sowie Chronizität der Nephritis. Auch kann der Pathologe die Frage beantworten, inwieweit mit einer Besserung der Nierenfunktion unter Therapie gerechnet werden kann. Der folgende Beitrag gibt einen Überblick über den Stellenwert der Nierenbiopsie bei SLE, der revidierten Klassifikation der LN von 2018 einschließlich Sonderformen der LN und über die Implikationen des Biopsie-Ergebnisses für die Therapie.
Collapse
Affiliation(s)
- Stefan Markus Weiner
- 2. Medizinische Abteilung, Krankenhaus der Barmherzigen Brüder, Trier
- KfH Nierenzentrum Nordallee, KfH Kuratorium für Dialyse und Nierentransplantation e. V., Trier
| | - Rüdiger Waldherr
- Pathologisches Institut, Ruprecht Karls Universität Heidelberg, Heidelberg
| |
Collapse
|
49
|
Fanouriakis A, Kostopoulou M, Cheema K, Anders HJ, Aringer M, Bajema I, Boletis J, Frangou E, Houssiau FA, Hollis J, Karras A, Marchiori F, Marks SD, Moroni G, Mosca M, Parodis I, Praga M, Schneider M, Smolen JS, Tesar V, Trachana M, van Vollenhoven RF, Voskuyl AE, Teng YKO, van Leew B, Bertsias G, Jayne D, Boumpas DT. 2019 Update of the Joint European League Against Rheumatism and European Renal Association-European Dialysis and Transplant Association (EULAR/ERA-EDTA) recommendations for the management of lupus nephritis. Ann Rheum Dis 2020; 79:713-723. [PMID: 32220834 DOI: 10.1136/annrheumdis-2020-216924] [Citation(s) in RCA: 404] [Impact Index Per Article: 101.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To update the 2012 EULAR/ERA-EDTA recommendations for the management of lupus nephritis (LN). METHODS Following the EULAR standardised operating procedures, a systematic literature review was performed. Members of a multidisciplinary Task Force voted independently on their level of agreeement with the formed statements. RESULTS The changes include recommendations for treatment targets, use of glucocorticoids and calcineurin inhibitors (CNIs) and management of end-stage kidney disease (ESKD). The target of therapy is complete response (proteinuria <0.5-0.7 g/24 hours with (near-)normal glomerular filtration rate) by 12 months, but this can be extended in patients with baseline nephrotic-range proteinuria. Hydroxychloroquine is recommended with regular ophthalmological monitoring. In active proliferative LN, initial (induction) treatment with mycophenolate mofetil (MMF 2-3 g/day or mycophenolic acid (MPA) at equivalent dose) or low-dose intravenous cyclophosphamide (CY; 500 mg × 6 biweekly doses), both combined with glucocorticoids (pulses of intravenous methylprednisolone, then oral prednisone 0.3-0.5 mg/kg/day) is recommended. MMF/CNI (especially tacrolimus) combination and high-dose CY are alternatives, for patients with nephrotic-range proteinuria and adverse prognostic factors. Subsequent long-term maintenance treatment with MMF or azathioprine should follow, with no or low-dose (<7.5 mg/day) glucocorticoids. The choice of agent depends on the initial regimen and plans for pregnancy. In non-responding disease, switch of induction regimens or rituximab are recommended. In pure membranous LN with nephrotic-range proteinuria or proteinuria >1 g/24 hours despite renin-angiotensin-aldosterone blockade, MMF in combination with glucocorticoids is preferred. Assessment for kidney and extra-renal disease activity, and management of comorbidities is lifelong with repeat kidney biopsy in cases of incomplete response or nephritic flares. In ESKD, transplantation is the preferred kidney replacement option with immunosuppression guided by transplant protocols and/or extra-renal manifestations. Treatment of LN in children follows the same principles as adult disease. CONCLUSIONS We have updated the EULAR recommendations for the management of LN to facilitate homogenization of patient care.
Collapse
Affiliation(s)
- Antonis Fanouriakis
- Rheumatology and Clinical Immunology Unit, "Attikon" University Hospital, Athens, Greece.,Department of Rheumatology, "Asklepieion" General Hospital, Athens, Greece
| | - Myrto Kostopoulou
- Department of Nephrology, "G. Gennimatas" General Hospital, Athens, Greece
| | - Kim Cheema
- Department of Medicine, Cambridge University, Cambridge, UK
| | - Hans-Joachim Anders
- Division of Nephrology, Department of Medicine IV, University Hospital LMU Munich, Munich, Germany
| | - Martin Aringer
- Division of Rheumatology, Department of Medicine III, University Medical Center & Faculty of Medicine Carl Gustav Carus at the TU Dresden, Dresden, Germany
| | - Ingeborg Bajema
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - John Boletis
- Nephrology Department and Renal Transplantation Unit, "Laikon" Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Eleni Frangou
- Department of Nephrology, Limassol General Hospital, Limassol, Cyprus
| | - Frederic A Houssiau
- Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Jane Hollis
- Lupus nurse specialist, Addenbrooke's Hospital, Cambridge, UK
| | - Adexandre Karras
- Department of Nephrology, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | - Stephen D Marks
- University College London Great Ormond Street Institute of Child Health, NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Gabriella Moroni
- Nephrology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marta Mosca
- Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Ioannis Parodis
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet and Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Manuel Praga
- Nephrology Department, Research Institute Hospital Universitario 12 de Octubre (i+12), Department of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Matthias Schneider
- Department of Rheumatology & Hiller Research Unit Rheumatology, UKD, Heinrich-Heine University, Duesseldorf, Germany
| | - Josef S Smolen
- Division of Rheumatology, Department of Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Vladimir Tesar
- Department of Nephrology, 1st Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - Maria Trachana
- Pediatric Immunology and Rheumatology Referral Center, First Pediatric Clinic, Hippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ronald F van Vollenhoven
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Alexandre E Voskuyl
- Rheumatology and Immunology Center, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Y K Onno Teng
- Centre of expertise for Lupus-, Vasculitis- and Complement-mediated Systemic autoimmune diseases, Department of Internal Medicine - section Nephrology, Leiden University Medical Center, Leiden, The Netherlands
| | | | - George Bertsias
- Rheumatology, Clinical Immunology and Allergy, University Hospital of Heraklion, Heraklion, Greece
| | - David Jayne
- Department of Medicine, Cambridge University, Cambridge, UK
| | - Dimitrios T Boumpas
- Rheumatology and Clinical Immunology Unit, "Attikon" University Hospital, Athens, Greece .,Laboratory of Autoimmunity and Inflammation, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| |
Collapse
|
50
|
Atypical hemolytic uremic syndrome and complement blockade: established and emerging uses of complement inhibition. Curr Opin Nephrol Hypertens 2020; 28:278-287. [PMID: 30865166 DOI: 10.1097/mnh.0000000000000499] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE OF REVIEW Atypical hemolytic uremic syndrome (aHUS) is a diagnosis that has captured the interest of specialists across multiple fields. The hallmark features of aHUS are microangiopathic hemolysis and thrombocytopenia, which creates a diagnostic dilemma because of the occurrence of these findings in a wide variety of clinical disorders. RECENT FINDINGS In most of the instances, aHUS is a diagnosis of exclusion after ruling out causes such as Shigella toxin, acquired or genetic a disintegrin and metalloproteinase thrombospondin motif 13 deficiency (thrombotic thrombocytopenic purpura), and vitamin B12 deficiency. In the purest sense, aHUS is a genetic condition that is activated (or unmasked) by an environmental exposure. However, it is now evident that complement activation is a feature of many diseases. Variants in complement regulatory genes predispose to microangiopathic hemolysis in many rheumatologic, oncologic, and drug-induced vascular, obstetric, peritransplant, and infectious syndromes. SUMMARY Many 'hemolysis syndromes' overlap clinically with aHUS, and we review the literature on the treatment of these conditions with complement inhibition. New reports on the treatment of C3 glomerulopathy, Shiga toxin-related classic hemolytic uremic syndrome, and medication-related thrombotic microangiopathy will be reviewed as well.
Collapse
|