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Pan Y, Chen WD, Liu L, Yang H, Chang B, Cui C. Clinical Features and Pathology of PLA2R and THSD7A-Associated Membranous Nephropathy: A Single-Center Study from China. Immunotargets Ther 2024; 13:385-398. [PMID: 39081263 PMCID: PMC11287465 DOI: 10.2147/itt.s450413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 06/12/2024] [Indexed: 08/02/2024] Open
Abstract
Objective Serum-specific antibodies as a non-invasive means to effectively diagnose idiopathic membranous nephropathy and assess clinicopathology. Methods Immunofluorescence of anti-PLA2R and THSD7A antibodies and kidney tissue PLA2R, THSD7A and IgG4 expression in IMN and non-IMN (2020-2021) was detected to assess the efficacy of diagnosing IMN. IMN patients were divided into two groups, anti-PLA2R antibody positive (161 cases) and negative (26 cases), and two groups, kidney tissue PLA2R (40 cases) and PLA2R+THSD7A (6 cases), to compare the clinical and pathological features, and to carry out a prognostic analysis of THSD7A-positive patients, with a focus on correlation with malignancy. Results The positive rate of anti-PLA2R antibodies was significantly higher in IMN (P<0.05); anti-PLA2R antibodies, kidney tissue PLA2R and IgG4 and THSD7A had some diagnostic value. Anti-PLA2R antibodies correlated with proteinuria levels in IMN patients, and their levels were negatively correlated with blood albumin (r=-0.146, P=0.042); correlated with pathological stage and C3 and IgG4 immunodeposition; there was no significant difference in clinical pathology between kidney tissue THSD7A+PLA2R positive compared to kidney tissue PLA2R positive patients, but the probability of achieving complete remission was low and time longer, and no malignancy events were detected during follow-up. Conclusion Anti-PLA2R antibodies, kidney tissue PLA2R, THSD7A and IgG4 have high diagnostic efficacy for IMN; anti-PLA2R antibodies can be used as diagnostic markers to assist in the assessment of clinical and pathological features; co-expression of kidney tissue PLA2R and THSD7A is not significantly different from kidney tissue PLA2R in assessing the clinical features, pathological manifestations and prognosis, but requires long-term. However, long-term follow-up is needed to monitor the potential risk, and a larger multicentre study with long-term follow-up is expected to be conducted to comprehensively assess IMN characteristics.
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Affiliation(s)
- Yan Pan
- Department of Nephrology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, People’s Republic of China
| | - Wei Dong Chen
- Department of Nephrology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, People’s Republic of China
| | - Lei Liu
- Department of Nephrology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, People’s Republic of China
| | - Huijuan Yang
- Department of Nephrology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, People’s Republic of China
| | - Baochao Chang
- Department of Nephrology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, People’s Republic of China
| | - Caixia Cui
- Department of Nephrology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, People’s Republic of China
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Kamyshova ES, Bobkova IN, Kakhsurueva PА, Abdulaeva AS, Rudenko TЕ, Stavrovskaya EV, Andreeva EY, Li OА, Suvorov AY. [Idiopathic membranous nephropathy with focal segmental sclerosis]. TERAPEVT ARKH 2024; 96:580-586. [PMID: 39106498 DOI: 10.26442/00403660.2024.06.202725] [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: 07/06/2024] [Accepted: 07/06/2024] [Indexed: 08/09/2024]
Abstract
AIM To evaluate the clinical and pathological features and prognosis of idiopathic membranous nephropathy (IMN) with focal segmental sclerosis (FSGS) in a group of Russian patients. MATERIALS AND METHODS 101 patients with morphologically verified IMN were enrolled in our single-center cohort retrospective study. The patients were divided into IMN group and IMN+FSGS group. The primary and secondary outcomes were analyzed in 59 patients, which had follow-up data for period more than 6 months. RESULTS At the time of renal biopsy the median age was 46.0 (33.0; 55.0) years and the median follow-up was 6.8 (4.0; 15.6) months. Secondary FSGS was revealed in 15 (14.9%) patients with IMN. The IMN and IMN+FSGS groups did not differ in gender, age of onset IMN and age of renal biopsy. In the IMN+FSGS group proteinuria was higher and estimated glomerular filtration rate was lower than that in the IMN group (p<0.05). The systolic arterial pressure and creatinine levels in the IMN+FSGS group were slightly higher than in the IMN group, but the difference was not significant. Anti-PLA2R positivity was similar in both groups. Chronic kidney disease (CKD) progression was observed in 10/52 (19.2%) and 5/7 (71.4%) patients in IMN and IMN+FSGS groups, respectively. In a multivariate Cox regression model, age of renal biopsy (odds ratio - OR 1.12, 95% confidence interval - CI 1.03-1.22; р=0.07), FSGS (OR 0.05, 95% CI 0.01-0.34; р=0.002) и response to initial course of immunosuppression (OR 0.33, 95% CI 0.12-0.95; р=0.039) were associated with the CKD progression. CONCLUSION In patients with IMN secondary FSGS is associated with a greater severity of proteinuria and a decrease in estimated glomerular filtration rate, and is also an independent factor of the CKD progression.
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Affiliation(s)
- E S Kamyshova
- Sechenov First Moscow State Medical University (Sechenov University)
| | - I N Bobkova
- Sechenov First Moscow State Medical University (Sechenov University)
| | | | - A S Abdulaeva
- Sechenov First Moscow State Medical University (Sechenov University)
| | - T Е Rudenko
- Sechenov First Moscow State Medical University (Sechenov University)
| | - E V Stavrovskaya
- Sechenov First Moscow State Medical University (Sechenov University)
| | - E Y Andreeva
- Sechenov First Moscow State Medical University (Sechenov University)
| | - O А Li
- Sechenov First Moscow State Medical University (Sechenov University)
| | - A Y Suvorov
- Sechenov First Moscow State Medical University (Sechenov University)
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Cheng P, Xie Q, Liu S, Liu X, Wang L, Hao CM. Aggressive treatment may be needed for idiopathic membranous nephropathy with focal segmental glomerulosclerosis lesions. REVISTA DA ASSOCIACAO MEDICA BRASILEIRA (1992) 2024; 70:e20230871. [PMID: 38716932 PMCID: PMC11068386 DOI: 10.1590/1806-9282.20230871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 11/30/2023] [Indexed: 05/12/2024]
Abstract
OBJECTIVE The purpose of this study was to analyze the clinical, pathological, prognostic features and treatment response of the coexistence of focal segmental glomerulosclerosis lesions with idiopathic membranous nephropathy. METHODS This is a two-center retrospective cohort study. Patients of idiopathic membranous nephropathy were enrolled and divided into two groups with or without focal segmental glomerulosclerosis lesions according to the renal biopsy. Laboratory data and pathological manifestation were compared. Renal phospholipase A2 receptor was detected by immunofluorescence. During the follow-up, the effects of different therapies and renal function were estimated. RESULTS A total of 236 patients were finally enrolled in this study, of which 60 and 176 idiopathic membranous nephropathy patients were enrolled in the FSGS+ and FSGS- groups, respectively. The FSGS+ group showed a higher percentage of hypertension history (38.3 vs. 20.0%, p=0.004), with a significantly higher level of systolic pressure [137 (120, 160) mmHg vs. 130 (120, 140) mmHg, p=0.009]. Main laboratory findings, including serial albumin (20.4±7.8 g/L vs. 24.5±6.7 g/L, p<0.001), 24-h proteinuria [5.61 (3.10, 7.87) g/day vs. 3.82 (2.31, 5.79) g/day, p=0.002], serial creatinine [80.8 (65.8, 97.9) μmol/L vs. 72.0 (58.7, 84.9) μmol/L, p=0.003], and estimated glomerular filtration rate [86 (66, 101) mL/min/1.73 m2 vs. 95 (81, 108) mL/min/1.73 m2, p=0.007] showed significant differences between the two groups. Pathologically, patients with focal segmental glomerulosclerosis lesions appeared with a higher percentage of crescents, a more severe degree of interstitial fibrosis, and a higher level of membranous nephropathy stage. Renal phospholipase A2 receptor showed a relatively lower positive rate of only 75.0% in the FSGS+ group in comparison with the positive rate of 90.3% in the FSGS- group (p=0.031). The prognosis was generally similar between the two groups. Among patients who were given non-immunosuppression treatment, those with focal segmental glomerulosclerosis lesions took a relatively longer period of time to achieve complete remission (29.3±7.0 m vs. 15.4±8.9 m, p=0.025) and experienced a higher rate of renal function deterioration (37.5 vs. 5.4%, p=0.033) compared with the other ones. While among those receiving immunosuppression treatment, both groups received similar remission rates. CONCLUSION Compared with FSGS- group, idiopathic membranous nephropathy with focal segmental glomerulosclerosis lesions represented more severe nephrotic syndrome and worse renal function. In view of the renal function decline during the follow-up, more aggressive treatment with the use of immunosuppressants should be considered for idiopathic membranous nephropathy patients with focal segmental glomerulosclerosis lesions.
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Affiliation(s)
- Ping Cheng
- Huashan Hospital Affiliated to Fudan University, Department of Nephrology - Shanghai, China
| | - Qionghong Xie
- Huashan Hospital Affiliated to Fudan University, Department of Nephrology - Shanghai, China
| | - Shaojun Liu
- Huashan Hospital Affiliated to Fudan University, Department of Nephrology - Shanghai, China
| | - Xiaobin Liu
- Wuxi People's Hospital Affiliated to Nanjing Medical University, Department of Nephrology - Jiangsu, China
| | - Liang Wang
- Wuxi People's Hospital Affiliated to Nanjing Medical University, Department of Nephrology - Jiangsu, China
| | - Chuan-Ming Hao
- Huashan Hospital Affiliated to Fudan University, Department of Nephrology - Shanghai, China
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Asghar MS, Denic A, Rule AD. Morphometric analysis of chronicity on kidney biopsy: a useful prognostic exercise. Clin Kidney J 2024; 17:sfad226. [PMID: 38327281 PMCID: PMC10849190 DOI: 10.1093/ckj/sfad226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Indexed: 02/09/2024] Open
Abstract
Chronic changes on kidney biopsy specimens include increasing amounts of arteriosclerosis, glomerulosclerosis, interstitial fibrosis and tubular atrophy, enlarged nephron size, and reduced nephron number. These chronic changes are difficult to accurately assess by visual inspection but are reasonably quantified using morphometry. This review describes the various patient populations that have undergone morphometric analysis of kidney biopsies. The common approaches to morphometric analysis are described. The chronic kidney disease outcomes associated with various chronic changes by morphometry are also summarized. Morphometry enriches the characterization of chronicity on a kidney biopsy and this can supplement the pathologist's diagnosis. Artificial intelligence image processing tools are needed to automate the annotations needed for practical morphometric analysis of kidney biopsy specimens in routine clinical care.
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Affiliation(s)
- Muhammad S Asghar
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Aleksandar Denic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Andrew D Rule
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
- Division of Epidemiology, Mayo Clinic, Rochester, MN, USA
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Duan S, Sun L, Zhang C, Zeng M, Sun B, Yuan Y, Mao H, Xing C, Zhang B. The thickness of glomerular basement membrane predicts complete remission in primary membranous nephropathy. Ren Fail 2023; 45:2179335. [PMID: 36856323 PMCID: PMC9980401 DOI: 10.1080/0886022x.2023.2179335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
Objective: Glomerular basement membrane (GBM) thickening is a typical and essential histopathological characteristic for the diagnosis of primary membranous nephropathy (PMN). The present study aimed to explore the relationship between GBM thickness and treatment response in PMN patients.Methods: A total of 128 patients with nephrotic syndrome concurrent with PMN were studied. The highest GBM thickness was measured from at least five glomerular capillary loops using an electron microscope, and the mean value was obtained. Patients were categorized into three groups according to the tertiles of GBM thickness as follows: Group 1 (GBM thickness ≤ 1100 nm, n = 48), Group 2 (1100 nm < GBM thickness ≤ 1300 nm, n = 40), Group 3 (GBM thickness >1300 nm, n = 40). Clinicopathological features and treatment response were compared among the three groups. The associations of GBM thickness with complete remission (CR) were assessed by Cox proportional hazard analyses and a cubic spline curve.Results: During a median follow-up period of 25.80 months, 69 (53.9%) patients achieved CR. Kaplan-Meier analysis showed that the non-CR probability was significantly higher in the highest tertile of GBM thickness (p˂0.001). Univariate Cox proportional hazard analysis indicated that GBM thickness was associated with CR (HR per SD 0.617, 95% CI [0.471-0.809], p˂0.001). After adjusting for age, duration of PMN, estimated glomerular filtration rate (eGFR), urinary protein excretion, grade of C3 deposition, and titer of serum anti-phospholipase A2 receptor (PLA2R) antibody, GBM thickness remained an independent predictor of CR (HR per SD 0.580, 95% CI [0.436-0.772], p˂0.001). Further multivariable-adjusted restricted cubic spline analysis confirmed a significant reverse linear association between GBM thickness and CR (p for nonlinear = 0.1261).Conclusions: GBM thickness is an independent risk factor of CR. PMN patients with an increased level of GBM thickening at diagnosis have a lower probability of achieving CR.
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Affiliation(s)
- Suyan Duan
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Lianqin Sun
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Chengning Zhang
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Ming Zeng
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Bin Sun
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Yanggang Yuan
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Huijuan Mao
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China
| | - Changying Xing
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China,Changying Xing, Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, P. R. China
| | - Bo Zhang
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, P.R. China,Department of Nephrology, Pukou Branch of JiangSu Province Hospital (Nanjing Pukou Central Hospital), Nanjing, P.R. China,CONTACT Bo Zhang
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He HG, Huang YY, Liang QQ, Ye QR, Li AD, Ye K, Wu QX, You YW. Calcineurin inhibitors or cyclophosphamide in the treatment of membranous nephropathy superimposed with FSGS lesions: a retrospective study from China. Ren Fail 2023; 45:2253930. [PMID: 37724535 PMCID: PMC10512924 DOI: 10.1080/0886022x.2023.2253930] [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: 04/11/2023] [Accepted: 08/25/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND Cyclophosphamide (CTX) and calcineurin inhibitors (CNIs) based regimens are recommended as immunosuppressive therapies for patients with idiopathic membranous nephropathy (IMN). Focal and segmental glomerular sclerosis (FSGS) lesions, which are common in membranous nephropathy (MN), are poor predictors of outcome. This study compared the differences of prognosis between two regimens in patients with IMN combined with FSGS lesions. METHODS This retrospective study enrolled 108 patients with biopsy-proven IMN, accompanied with FSGS lesions, nephrotic syndrome and an estimated glomerular filtration rate (eGFR)≥60 mL/min/1.73 m2 who were treated with CTX or CNIs. We used propensity score matching (PSM) for balancing the confounding variables. RESULTS During follow-up, 10 patients (10/55 [18.2%]; nine males) in the CNIs group showed a 50% decline in eGFR; eight had a not otherwise specified variant. Patients initially treated with CNIs had a significantly higher risk of progression to the primary outcome and a lower probability of complete or total remission. The relapse rate was higher in patients who initially received CNIs- than in those who received CTX-based treatment. Before PSM, age and 24-h urine protein level differed significantly between the groups. The PSM model included data from 72 patients. Worse outcomes were also noted among patients who initially received CNIs than those who received CTX-based treatments after matching. CONCLUSIONS Patients with MN combined with FSGS lesions have a higher risk of renal functional decline and a higher rate of relapse after CNIs than after CTX therapy.
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Affiliation(s)
- Hong-Guang He
- Department of Nephrology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
- Department of Nephrology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Yi-Yun Huang
- Department of Nephrology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Qin-Qing Liang
- Department of Pathology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Qiu-Rong Ye
- Department of Pathology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - An-Dong Li
- Department of Nephrology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Kun Ye
- Department of Nephrology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Qiu-Xia Wu
- Department of Nephrology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Yan-Wu You
- Department of Nephrology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
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Lu H, Shen J, Sun J, Sun J. Efficacy and Safety of Rituximab in the Treatment of Idiopathic Membranous Nephropathy: A Meta-Analysis. Appl Bionics Biomech 2022; 2022:5393797. [PMID: 36276580 PMCID: PMC9581616 DOI: 10.1155/2022/5393797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/07/2022] [Accepted: 09/12/2022] [Indexed: 11/17/2022] Open
Abstract
Background Primary membranous nephropathy (MN), sometimes referred to as idiopathic membranous nephropathy (IMN), is a kind of MN whose pathogenesis is yet unclear. According to research reports, the incidence of IMN is about 9.8-26.8%, and it is on the rise. Methods The computer retrieves eight databases to obtain controlled trials at home and abroad on the rituximab (RTX) actions in IMN management. After a rigorous literature quality evaluation, software called RevMan 5.3 was used for data analysis. Results This meta-analysis finally contained 8 papers. They were all regarded as controlled trials. Six studies reported serum creatinine (standardized mean difference [SMD]: -6.87; 95% CI: -14.09, 0.35; P = 0.062), ALB (SMD: 1.91; 95% CI: -0.31, 4.14; P = 0.092), and adverse reactions (OR: 0.56; 95% CI: 0.36, 0.90; P < 0.01), all of which were significantly higher in the test group than in the control group (OR: 1.37; 95% CI: 1.07, 1.76; P < 0.01). Conclusion The overall effective rate, serum creatinine, adverse effects, and ALB of this trial indicate that RTX may be beneficial for individuals with IMN, but further high-quality research is required to confirm these findings.
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Affiliation(s)
- Huijuan Lu
- Department of Nephrology, First People's Hospital of Linping District, No. 369, Yingbin Road, Linping District, Hangzhou, Zhejiang 311199, China
| | - Jun Shen
- Department of Nephrology, First People's Hospital of Linping District, No. 369, Yingbin Road, Linping District, Hangzhou, Zhejiang 311199, China
| | - Jieqiong Sun
- Department of Nephrology, First People's Hospital of Linping District, No. 369, Yingbin Road, Linping District, Hangzhou, Zhejiang 311199, China
| | - Jia Sun
- Department of Nephrology, First People's Hospital of Linping District, No. 369, Yingbin Road, Linping District, Hangzhou, Zhejiang 311199, China
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Wang H, Wan C, Jiang M, Zhang C. Non-glomerular Tip Lesion Focal Segmental Glomerulosclerosis as a Negative Predictor in Idiopathic Membranous Nephropathy. Curr Med Sci 2022; 42:1007-1014. [DOI: 10.1007/s11596-022-2628-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 07/05/2022] [Indexed: 11/30/2022]
Abstract
Abstract
Objective
To assess the significance of focal segmental glomerulosclerosis (FSGS) variants on clinicopathological characteristics and short-term outcomes in idiopathic membranous nephropathy (IMN) patients.
Methods
The clinicopathological data of 146 IMN patients diagnosed between December 2016 and March 2019 in our center were collected and analyzed. These patients were divided into the pure IMN group, IMN with glomerular tip lesion (GTL) group, and IMN with non-GTL FSGS group.
Results
The IMN with non-GTL FSGS and IMN with GTL groups both had higher proportions of patients with hypertension, lower serum albumin, and severe proteinuria, while the IMN with non-GTL FSGS group additionally showed higher blood pressure and serum cholesterol, and lower serum IgG than the IMN group (all P<0.05). As for pathology, the IMN with non-GTL FSGS group had higher proportions of patients with acute tubular injury and moderate to severe chronic injuries than the IMN group (all P<0.05). In the IMN, IMN with GTL, and IMN with non-GTL FSGS groups, the overall one-year remission rates were 81.6%, 76%, and 58.8%, respectively. Furthermore, the IMN with non-GTL FSGS group showed the lowest cumulative incidence to reach remission within one year. Multivariate Cox logistic analysis demonstrated that higher level of serum anti-M-type phospholipase A2 receptor antibody and the existence of non-GTL FSGS lesion were independent predictors for no remission in IMN patients.
Conclusion
The non-GTL FSGS lesion was a novel negative predictor in IMN and should be taken into account in the management of IMN.
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Membranous nephropathy: new pathogenic mechanisms and their clinical implications. Nat Rev Nephrol 2022; 18:466-478. [PMID: 35484394 DOI: 10.1038/s41581-022-00564-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2022] [Indexed: 12/24/2022]
Abstract
Membranous nephropathy (MN) is characterized histomorphologically by the presence of immune deposits in the subepithelial space of the glomerular filtration barrier; its clinical hallmarks are nephrotic range proteinuria with oedema. In patients with primary MN, autoimmunity is driven by circulating autoantibodies that bind to one or more antigens on the surface of glomerular podocytes. Compared with other autoimmune kidney diseases, the understanding of the pathogenesis of MN has substantially improved in the past decade, thanks to the discovery of pathogenic circulating autoantibodies against phospholipase A2 receptor 1 (PLA2R1) and thrombospondin type 1 domain-containing protein 7A (THSD7A). The subsequent identification of more proteins associated with MN, some of which are also endogenous podocyte antigens, might further advance the clinical characterization of MN, including its diagnosis, treatment and prognosis. Insights from studies in patients with MN, combined with the development of novel in vivo and in vitro experimental models, have potential to improve the management of patients with MN. Characterizing the interaction between autoimmunity and local glomerular lesions provides an opportunity to develop more specific, pathogenesis-based treatments.
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Oto OA, Demir E, Mirioglu S, Dirim AB, Ozluk Y, Cebeci E, Basturk T, Ucar AR, Soltanova L, Nuriyev K, Kilicaslan I, Yazici H, Caliskan Y. Clinical significance of glomerular C3 deposition in primary membranous nephropathy. J Nephrol 2021; 34:581-587. [PMID: 33387338 DOI: 10.1007/s40620-020-00915-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/11/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND We aimed to investigate the effects of glomerular C3 deposition on clinical, histopathological features, and outcomes of patients with primary membranous nephropathy (MN). METHODS A total of 261 patients with biopsy-proven primary MN, who were on follow up for at least 6 months, were included in the study. The patients were grouped according to their C3 immunostaining in kidney biopsy samples at the time of diagnosis: Low intensity [LI; (C3 1 +)] and high intensity [HI; (C3 2 + or C3 3 +)]. The primary outcome was the development of kidney failure. Complete (CR) or partial remission (PR) was defined as secondary outcome. RESULTS Sixteen patients reached the primary outcome after a median follow-up of 33.8 months. Patients in the high intensity group (119 cases) had lower eGFR and higher proteinuria at admission and last follow-up compared to patients in the low intensity group (142 cases). Also, more patients in the high intensity group reached the primary outcome compared to patients in the low intensity group: twelve patients (10.1%) in the high intensity group and four patients (2.8%) in the low intensity group reached the primary outcome (p = 0.015). Kaplan-Meier analysis demonstrated that patients in the high intensity group had a higher risk for kidney failure (p = 0.02). In multivariate logistic regression analysis, high intensity C3 deposition and initial estimated glomerular filtration rate (eGFR) indepenently predicted primary outcome. CONCLUSION Extensive glomerular C3 deposition is a predictor of kidney failure in patients with MN.
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Affiliation(s)
- Ozgur Akin Oto
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Erol Demir
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Safak Mirioglu
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Ahmet Burak Dirim
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Yasemin Ozluk
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Egemen Cebeci
- Division of Nephrology, Haseki Training and Research Hospital, Istanbul, Turkey
| | - Taner Basturk
- Division of Nephrology, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
| | - Ali Riza Ucar
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Lala Soltanova
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Kanan Nuriyev
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Isin Kilicaslan
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Halil Yazici
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Yasar Caliskan
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey. .,Division of Nephrology and Hypertension, Saint Louis University School of Medicine, Saint Louis, MO, USA.
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Zhang J, Pan S, Li D, Li Z, Jin L, Zhou Z, Pan M. A nomogram for the prediction of renal outcomes among patients with idiopathic membranous nephropathy. Exp Ther Med 2020; 20:3130-3137. [PMID: 32855681 PMCID: PMC7444415 DOI: 10.3892/etm.2020.9063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 07/01/2020] [Indexed: 11/06/2022] Open
Abstract
The early prediction of renal outcomes in patients with idiopathic membranous nephropathy (iMN) remains challenging. The present retrospective study evaluated patients with iMN confirmed by renal biopsy. An optimized Cox regression model and a nomogram were constructed for the early prediction of renal outcomes. A total of 141 patients who met the inclusion criteria were evaluated in the present study. In total 18 (12.8%) patients eventually progressed to the endpoint, 6 of whom developed end-stage renal disease, and one patient died during follow-up. The optimized model demonstrated that 24-h proteinuria [hazard ratio (HR) 1.24; 95% CI, 1.10-1.40; P-value <0.001] and chronic tubulointerstitial injury [referred to as grade 0, grade 1 (HR), 5.12; 95% CI, 1.33-19.75; P-value=0.02] or grade 2 (HR, 6.43; 95% CI, 1.35-30.59; P-value=0.02) were independent risk factors for a poor renal outcome. Patients with an estimated three-year renal survival rate (ETR) less than 0.87 had a high risk of a poor renal outcome. In addition, patients with an ETR of 0.87 to 0.98 more quickly developed a decreased estimated glomerular filtration rate after two years of follow-up. In the present study a nomogram for the early prediction of renal outcomes in patients with iMN was developed. This nonogram suggested that patients with an ETR of 0.87-0.98 should receive greater attention during follow-up.
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Affiliation(s)
- Ji Zhang
- Department of Nephrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Shufang Pan
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Duo Li
- Department of Nephrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhanyuan Li
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Lingwei Jin
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhihong Zhou
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Min Pan
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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12
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Gao X, Rosales A, Karttunen H, Bommana GM, Tandoh B, Yi Z, Habib Z, D'Agati V, Zhang W, Ross MJ. The HIV protease inhibitor darunavir prevents kidney injury via HIV-independent mechanisms. Sci Rep 2019; 9:15857. [PMID: 31676833 PMCID: PMC6825220 DOI: 10.1038/s41598-019-52278-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 10/10/2019] [Indexed: 12/13/2022] Open
Abstract
HIV-associated nephropathy (HIVAN) is a rapidly progressive kidney disease that is caused by HIV infection of renal epithelial cells with subsequent expression of viral genes, including vpr. Antiretroviral therapy ameliorates HIVAN without eradicating HIV from the kidneys and the mechanism by which it protects kidneys is poorly understood. Since HIV protease inhibitors have "off target" cellular effects, we studied whether darunavir, the most commonly prescribed protease inhibitor, protects kidneys from HIV-induced injury via mechanisms independent of HIV protease and viral replication. Renal epithelial cells were transduced with lentiviruses encoding HIV (lacking protease and reverse transcriptase), Vpr, or vector control. Darunavir attenuated HIV and Vpr-induced activation of Stat3, Src, Erk, and cytokines, which are critical for HIVAN pathogenesis. We then studied HIV-transgenic mice, which develop HIVAN in the absence of HIV protease or reverse transcriptase. Mice were treated with darunavir, zidovudine, darunavir + zidovudine, or control. Darunavir and darunavir + zidovudine reduced albuminuria and histologic kidney injury and normalized expression of dysregulated proteins. RNA-seq analyses demonstrated that darunavir suppressed HIV-induced upregulation of immune response genes in human kidney cells. These data demonstrate that darunavir protects against HIV-induced renal injury via mechanisms that are independent of inhibition of HIV protease.
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Affiliation(s)
- Xiaobo Gao
- Division of Nephrology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA
| | - Alan Rosales
- Division of Nephrology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA
| | - Heidi Karttunen
- Division of Nephrology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA
| | | | - Buadi Tandoh
- Division of Nephrology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA
| | - Zhengzi Yi
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Vivette D'Agati
- Department of Pathology, Columbia University, College of Physicians & Surgeons, New York, NY, USA
| | - Weijia Zhang
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael J Ross
- Division of Nephrology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA.
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA.
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13
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Stangou MJ, Marinaki S, Papachristou E, Liapis G, Pateinakis P, Gakiopoulou H, Nikolaidou C, Kolovou K, Lampropoulou IT, Zerbala S, Papadea P, Dounousi E, Balafa O, Pavlakou P, Andrikos A, Balassi E, Manolakaki P, Moustakas G, Galitsiou D, Mitsopoulos E, Vourlakou C, Choulitoudi V, Andronikidi PE, Stefanidis I, Golfinopoulos S, Dafnis E, Stylianou K, Panagoutsos S, Papadogianakis A, Tzanakis I, Sioulis A, Vlahakos D, Grapsa I, Tsilivigkou M, Kaperonis N, Paliouras C, Dioudis C, Spaia S, Apostolou T, Iatrou C, Boletis J, Goumenos D, Papagianni A. Histological grading in primary membranous nephropathy is essential for clinical management and predicts outcome of patients. Histopathology 2019; 75:660-671. [PMID: 31318463 PMCID: PMC6856983 DOI: 10.1111/his.13955] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/09/2019] [Accepted: 07/14/2019] [Indexed: 01/06/2023]
Abstract
Aims Diagnosis of primary membranous nephropathy (PMN) is mainly based on immunofluorescence/immunohistochemistry findings. However, assessment of specific features on optical microscopy can help to estimate the severity of the disease, guide treatment and predict the response. The aim of this study was to identify, classify and grade the precise histological findings in PMN to predict renal function outcome and guide treatment. Methods and results Histological parameters, including focal segmental sclerosis (FSGS), tubular atrophy (TA), interstitial fibrosis (IF) and vascular hyalinosis (VH), were re‐evaluated in 752 patients with PMN. Their predictive value was estimated separately, and also in a combination score (FSTIV) graded from 0 to 4. Finally, the impact of histology was assessed in the response to immunosuppressive treatment. Mean age of patients was 53.3 (15–85) years and most presented with nephrotic syndrome. FSGS was present in 32% and VH in 51% of the patients, while TA and IF were graded as stage ≥1 in 52% and 51.4%, respectively. The follow‐up period was 122.3 (112–376) months. FSGS, TA and IF and VH were associated with impaired renal function at diagnosis (P = 0.02, P < 0.0001, P = 0.001 and P = 0.02, respectively) and at the end of follow‐up (P = 0.004, P < 0.0001, P < 0.0001 and P = 0.04, respectively). In multiple regression and binary logistic analysis, the presence of FSGS and degree of TA were the most significant parameters predicting renal function outcome, defined either by eGFR (end), FSGS (r = 0.6, P < 0.0001) and TA (r = 0.6, P < 0.0001), or by the endpoint of >50% eGFR reduction, FSGS (P = 0.001) and TA (P = 0.02). Also, patients presented with FSGS, IF, VH and/or with FSTIV > 1 could benefit from immunosuppression, regardless of clinical presentation. Conclusions The presence and degree of four histological indices, FSGS, VH, TA and IF, assessed separately or in combination, and FSTIV score not only predict renal function outcome after long‐term follow‐up, but can also help in the choice of appropriate treatment. Decisions concerning immunosuppressive treatment can be guided by pathology regardless of clinical findings.
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Affiliation(s)
- Maria J Stangou
- Hippokration General Hospital, Aristotle University, Thessaloniki, Greece
| | - Smaragdi Marinaki
- National and Kapodistrian University, Laiko General Hospital, Athens, Greece
| | | | - George Liapis
- National and Kapodistrian University, Laiko General Hospital, Athens, Greece
| | | | - Hara Gakiopoulou
- National and Kapodistrian University, Laiko General Hospital, Athens, Greece
| | | | - Kyriaki Kolovou
- National and Kapodistrian University, Laiko General Hospital, Athens, Greece
| | | | | | | | | | - Olga Balafa
- University Hospital of Ioannina, Ioannina, Greece
| | | | | | | | | | | | | | | | | | | | | | | | | | - Eugene Dafnis
- University Hospital of Heraklion, Heraklion, Crete, Greece
| | | | | | | | | | | | - Demetrios Vlahakos
- Attikon University Hospital, National and Kapodistrian University, Athens, Greece
| | - Irene Grapsa
- Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | | | | | | | | | - Sophia Spaia
- General Hospital of Thessaloniki 'Agios Pavlos', Thessaloniki, Greece
| | | | | | - John Boletis
- National and Kapodistrian University, Laiko General Hospital, Athens, Greece
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He HG, Wu CQ, Ye K, Zeng C, Huang YY, Luo SW, Yin W, Ye QR, Peng XM. Focal segmental glomerulosclerosis, excluding atypical lesion, is a predictor of renal outcome in patients with membranous nephropathy: a retrospective analysis of 716 cases. BMC Nephrol 2019; 20:328. [PMID: 31438882 PMCID: PMC6704573 DOI: 10.1186/s12882-019-1498-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 07/29/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Focal segmental lesions (FSLs) are not uncommon in idiopathic membranous nephropathy (IMN). The reported percentage of IMN patients with focal segmental glomerulosclerosis (FSGS) lesions varies widely between studies. The objective of this study was to differentiate atypical FSL (aFSL) from typical FSGS in IMN and to analyse the clinicopathological predictors of primary outcome of IMN patients. METHODS A total of 716 patients with biopsy-proven IMN between January 1, 2007 and December 31, 2017 were enrolled in the study. An atypical focal segmental lesion was defined as pure synechia, segmental hyperplasia of podocytes or thickening of the GBM accompanied by proliferation of the mesangial matrix, and absence of typical FSGS. The patients were divided into three groups: patients without FSL (FSL-), patients with typical FSGS (FSGS+), and patients with aFSL (aFSL+).The primary outcome was a 50% decline in the initial estimated glomerular filtration rate or end-stage renal disease (ESRD) incidence. Secondary outcomes included all-cause death and ESRD. RESULTS FSGS was present in 174 patients, while aFSL was noted in 161 patients. Systolic blood pressure was higher in both aFSL+ group and FSGS+ groups compared with the FSL- group. IMN patients without FSL and with aFSL had lower serum creatinine levels than IMN patients with FSGS. Both the FSGS+ and aFSL+ groups had higher levels of proteinuria and lower albumin levels than the FSL- group. Renal tissue lesions, including tubulointerstitial fibrosis, glomerular obsolescence, and vascular sclerosis were significantly more severe in the FSGS+ group. Cox multivariate analysis showed that older age ≥ 60 years, eGFR< 60 ml/(min·1.73m2), tubulointerstitial fibrosis area ≥ 15% and FSGS at biopsy were independent risk factors for the primary outcome. CONCLUSIONS No significant difference in outcome was found between the FSL- and aFSL+ groups, although the patients with aFSL had lower levels of serum albumin and eGFR, higher level of urinary protein, more severe renal lesions with proliferation of the mesangial area,tubulointerstitial fibrosis and vascular sclerosis. FSGS, excluding atypical lesions, was an independent predictor of the primary outcome.
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Affiliation(s)
- Hong-Guang He
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Chao-Qing Wu
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Kun Ye
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Chun Zeng
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Yi-Yun Huang
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Shu-Wen Luo
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Wu Yin
- Department of Pathology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Qiu-Rong Ye
- Department of Pathology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China
| | - Xiao-Mei Peng
- Department of Nephrology, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Qingxiu District, Nanning, 530000, China.
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15
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Stangou M, Marinaki S, Papachristou E, Kolovou K, Sambani E, Zerbala S, Papadea P, Balafa O, Rapsomanikis KP, Andrikos A, Manolakaki P, Papadopoulou D, Mitsopoulos E, Liakou H, Andronikidi PE, Choulitoudi V, Moustakas G, Galitsiou D, Dafnis E, Stylianou K, Stefanidis I, Golfinopoulos S, Panagoutsos S, Tsilivigkou M, Papadogianakis A, Tzanakis I, Sioulis A, Vlachakos D, Grapsa E, Spaia S, Kaperonis N, Paliouras C, Dioudis C, Papoulidou F, Apostolou T, Iatrou C, Boletis I, Goumenos D, Papagianni A. Immunosuppressive regimens based on Cyclophospamide or Calcineurin inhibitors: Comparison of their effect in the long term outcome of Primary Membranous Nephropathy. PLoS One 2019; 14:e0217116. [PMID: 31404062 PMCID: PMC6690570 DOI: 10.1371/journal.pone.0217116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 07/22/2019] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Management of the Primary Membranous Nephropathy (PMN) usually involves administration of immunosuppressives. Cyclophosphamide (Cyclo) and Calcineurin Inhibitors (CNIs) are both widely used but only limited data exist to compare their efficacy in long term follow-up. AIM The aim of the present study was to estimate and compare long term effects of Cyclo and CNIs in patients with PMN. PATIENTS-METHODS Clinical data, histologic findings and long term outcome were retrospectively studied. The response to treatment and rate of relapse was compared between patients treated with CNIs or Cyclo based immunosuppressive regimens. RESULTS Twenty three centers participated in the study, with 752 PMN patients (Mean age 53.4(14-87) yrs, M/F 467/285), followed for 10.1±5.7 years. All patients were initially treated with Renin Angiotensin Aldosterone System inhibitors (RAASi) for at least 6 months. Based on their response and tolerance to initial treatment, patients were divided into 3 groups, group I with spontaneous remission, who had no further treatment, group II, continued on RAASi only, and group III on RAASi+immunosuppression. Immunosuppressive regimes were mainly based on CNIs or Cyclo. Frequent relapses and failure to treatment were more common between patients who had started on CNIs (n = 381) compared to those initially treated with Cyclo (n = 110), relapse rate: 25.2% vs. 6.4%, p<0.0001, and no response rate: 22.5% vs. 13.6%, p = 0.04, respectively. CONCLUSIONS Long term follow up showed that administration of Cyclo in PMN is followed by better preservation of renal function, increased response rate and less frequent relapses, compared to CNIs.
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Affiliation(s)
- Maria Stangou
- Department of Nephrology, Hippokration General Hospital, Aristotle University, Thessaloniki, Greece
| | - Smaragdi Marinaki
- Department of Nephrology, Laiko General Hospital, National and Kapodistrian University, Athens, Greece
| | | | - Kyriaki Kolovou
- Department of Nephrology, Laiko General Hospital, National and Kapodistrian University, Athens, Greece
| | - Erasmia Sambani
- Department of Nephrology, Hippokration General Hospital, Aristotle University, Thessaloniki, Greece
| | - Synodi Zerbala
- Department of Nephrology, General Hospital of Nikaia, Piraeus, Greece
| | - Panagiota Papadea
- Department of Nephrology, General Hospital of Nikaia, Piraeus, Greece
| | - Olga Balafa
- Department of Nephrology, University Hospital of Ioannina, Ioannina, Greece
| | | | - Aimilios Andrikos
- Department of Nephrology, Hatzikosta General Hospital of Ioannina, Ioannina, Greece
| | - Panagiota Manolakaki
- Department of Nephrology, Hatzikosta General Hospital of Ioannina, Ioannina, Greece
| | - Dorothea Papadopoulou
- Department of Nephrology, Papageorgiou General Hospital of Thessaloniki, Thessaloniki, Greece
| | - Efstathios Mitsopoulos
- Department of Nephrology, Papageorgiou General Hospital of Thessaloniki, Thessaloniki, Greece
| | - Helen Liakou
- Department of Nephrology, Hippokration General Hospital, Aristotle University, Thessaloniki, Greece
| | | | | | - George Moustakas
- Department of Nephrology, Gennimatas General Hospital of Athens, Athens, Greece
| | - Dimitra Galitsiou
- Department of Nephrology, Gennimatas General Hospital of Athens, Athens, Greece
| | - Eugene Dafnis
- Department of Nephrology, University Hospital of Heraklion, Heraklion Crete, Greece
| | - Kostas Stylianou
- Department of Nephrology, University Hospital of Heraklion, Heraklion Crete, Greece
| | - Ioannis Stefanidis
- Department of Nephrology, University Hospital of Larissa, Larissa, Greece
| | | | - Stylianos Panagoutsos
- Department of Nephrology, University Hospital of Alexandroupolis, Alexandroupoli, Greece
| | - Maria Tsilivigkou
- Department of Nephrology, Tzaneion General Hospital of Piraeus, Athens, Greece
| | | | - Ioannis Tzanakis
- Department of Nephrology, General Hospital of Chania, Chania Crete, Greece
| | - Athanasios Sioulis
- Section of Nephrology, 1st Department of Medicine, AHEPA University General Hospital, Thessaloniki, Greece
| | - Dimitrios Vlachakos
- Department of Nephrology, Attikon University Hospital, National and Kapodistrian University, Athens, Greece
| | - Eirini Grapsa
- Department of Nephrology, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Sophia Spaia
- Department of Nephrology, General Hospital of Thessaloniki "Agios Pavlos", Thessaloniki, Greece
| | - Nikolaos Kaperonis
- Department of Nephrology, Hellenic Red Cross Hospital Korgialeneio-Benakeio, Athens, Greece
| | | | | | - Fani Papoulidou
- Department of Nephrology, General Hospital of Kavala, Kavala, Greece
| | | | - Christos Iatrou
- Department of Nephrology, General Hospital of Nikaia, Piraeus, Greece
| | - Ioannis Boletis
- Department of Nephrology, Laiko General Hospital, National and Kapodistrian University, Athens, Greece
| | | | - Aikaperini Papagianni
- Department of Nephrology, Hippokration General Hospital, Aristotle University, Thessaloniki, Greece
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16
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Chen Y, Tang L, Feng Z, Cao X, Sun X, Liu M, Liu S, Zhang X, Li P, Wei R, Qiu Q, Cai G, Chen X. Pathological predictors of renal outcomes in nephrotic idiopathic membranous nephropathy with decreased renal function. J Nephrol 2014; 27:307-16. [PMID: 24523071 DOI: 10.1007/s40620-014-0057-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Accepted: 12/05/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES The outcome of idiopathic membranous nephropathy (IMN) in adults with nephrotic-range proteinuria and decreased renal function has seldom been described and the predictive value of pathological features is debated. This study aimed to describe the clinical course of this patient subgroup and to identify independently predictive pathological features. MATERIALS AND METHODS We evaluated 129 adults with biopsy-proven IMN diagnosed from 2002 to 2011. All patients had chronic kidney disease (CKD) stages 2-4 and nephrotic-range proteinuria (≥3.5 g/day). Primary outcomes were a 20 or 50 % decline in renal function, progression to end-stage renal disease (ESRD), or all-cause mortality. RESULTS Of 129 patients, 38 (30 %) presented with proteinuria ≥8.0 g/day and 37 (29 %) with CKD stages 3-4. Thirteen (10 %) presented with segmental sclerosis, 97 (75 %) with arteriosclerosis, 42 (33 %) with moderate-to-severe tubulointerstitial injury, and 86 (67 %) with C3 deposition. Over a median follow-up of 34 months (range 12-135), 51 patients (40 %) had a 20 % decline in renal function, 27 (21 %) a 50 % decline, 14 (11 %) developed ESRD, and 19 (15 %) died. Segmental sclerosis and tubulointerstitial injury but not arteriosclerosis or C3 deposition were independent risk factors for 20 and 50 % renal function decline and progression to ESRD. CONCLUSIONS Segmental sclerosis and tubulointerstitial injury predict renal outcomes independent of clinical data in nephrotic IMN patients with decreased renal function.
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Affiliation(s)
- Yizhi Chen
- Division of Nephrology, State Key Discipline of Internal Medicine (Nephrology), State Key Laboratory of Kidney Disease (2011DAV00088), National Clinical Medical Research Center for Kidney Disease (2013BAI09B05), Medical Quality Control Center for Kidney Disease, Chinese People's Liberation Army (PLA) General Hospital (301 Hospital), Chinese PLA Medical Academy, 28 Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
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