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https://www.readbyqxmd.com/read/29755981/diagnostic-test-accuracy-of-serum-anti-pla2r-autoantibodies-and-glomerular-pla2r-antigen-for-diagnosing-idiopathic-membranous-nephropathy-an-updated-meta-analysis
#1
Weiying Li, Yuliang Zhao, Ping Fu
Background: M-type phospholipase A2 receptor (PLA2R) is known as a major antigen on podocytes, which is involved with the pathogenesis of idiopathic membranous nephropathy (iMN). Many studies have shown that serum anti-PLA2R autoantibodies (sPLA2R) are prevalent in patients with iMN but are rarely detected in secondary membranous nephropathy (SMN) or other glomerulonephritis. The anti-PLA2R is considered as a promising serum biomarker in iMN but reports about its diagnostic value are variable and inconsistent...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29725656/the-role-of-pla2r-antibody-in-treatment-of-membranous-nephropathy
#2
Karine Dahan, Valentine Gillion, Catherine Johanet, Hanna Debiec, Pierre Ronco
No abstract text is available yet for this article.
March 2018: KI Reports
https://www.readbyqxmd.com/read/29725654/efficacy-and-safety-of-rituximab-in-hepatitis-b-virus-associated-pla2r-positive-membranous-nephropathy
#3
Lena Berchtold, Gilbert Zanetta, Karine Dahan, Fabrice Mihout, Julie Peltier, Dominique Guerrot, Isabelle Brochériou, Pierre Ronco, Hanna Debiec
No abstract text is available yet for this article.
March 2018: KI Reports
https://www.readbyqxmd.com/read/29698936/response-predictors-to-calcineurin-inhibitors-in-patients-with-primary-membranous-nephropathy
#4
Xiaofang Yu, Jieru Cai, Xiaoyan Jiao, Shu Zhang, Hong Liu, Xiaoqiang Ding
BACKGROUND: Currently, there is an urgent need to find ways of identifying primary membranous nephropathy (PMN) patients who are likely to benefit from calcineurin inhibitors (CNI) or who are resistant to them. In this study, we employed nano-HPLC-MS/MS analysis to identify serum biomarkers that predict the clinical response to CNI therapy in PMN patients. METHODS: The endpoint was complete remission (CR) after CNI treatment. PMN patients were grouped into no-remission (NR) or CR groups to screen predictive candidates using the nano-HPLC-MS/MS analysis...
April 26, 2018: American Journal of Nephrology
https://www.readbyqxmd.com/read/29688520/comparison-of-2-anti-pla2r-immunoassays-for-the-diagnosis-of-primary-membranous-nephropathy
#5
Weihao Li, Yaping Guo, Zhiping Zhang, Feifei Zhang, Xiaomei Liu, Xin Ji, Lixia Liu, Hong Wang
Background: Anti-phospholipase A2 receptor (anti-PLA2R) is a promising biomarker for diagnosis, activity evaluation, therapy monitoring, and prognostic estimation of primary membranous neuropathy (pMN). Difference in methodology may be one cause of the discrepancy in anti-PLA2R-positive percentages in reported studies. In this study, we evaluated the determination consistency of anti-PLA2R using indirect immunofluorescence assay (IIF) and enzyme-linked immunosorbent assay (ELISA). Methods: A total of 113 patients with pMN, 34 with secondary membranous neuropathy (sMN), and 53 healthy control individuals were enrolled...
April 23, 2018: Laboratory Medicine
https://www.readbyqxmd.com/read/29649452/serum-secretory-phospholipase-a2-group-ib-correlates-with-the-severity-of-membranous-nephropathy
#6
Weihao Li, Mingming Zhang, Yaping Guo, Xiaomei Liu, Xin Ji, Junhua Su, Zhiping Zhang, Feifei Zhang
BACKGROUND: Serum secretory phospholipase A2 group IB (sPLA2-IB) is involved in the pathological processes of membranous nephropathy (MN). To date, there is no large-scale study validating the usefulness of circulating sPLA2-IB in the follow-up of patients with MN. This study investigated the role of circulating sPLA2-IB in the evaluation of severity of MN. METHODS: A total of 158 patients with primary membranous nephropathy (pMN), 34 with secondary membranous nephropathy (sMN) and 53 healthy controls were enrolled...
April 9, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29626294/routine-immunohistochemical-staining-in-membranous-nephropathy-in-situ-detection-of-phospholipase-a2-receptor-and-thrombospondin-type-1-containing-7a-domain
#7
Vincenzo L'Imperio, Federico Pieruzzi, Renato Alberto Sinico, Manuela Nebuloni, Antonio Granata, Andrew Smith, Antonella Radice, Fabio Pagni
BACKGROUND: Membranous nephropathy (MN) can be idiopathic (iMN) or manifest as a result of systemic underlying conditions as a secondary epiphenomenon. For the prognostic and predictive consequences of this discrimination, the routine use of reliable markers is crucial. This large MN series aimed to evaluate the routine and standardized immunohistochemical (IHC) employment of a panel of 3 biomarkers-phospholipase A2 receptor (PLA2R), thrombospondin type-1 domain-containing 7A (THSD7A), and immunoglobulin (Ig)G4-in the differential diagnosis of MN forms, contributing to the validation of the technique and the correct interpretation of reproducible patterns of reactivity...
April 6, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29623759/an-update-on-clinical-significance-of-use-of-thsd7a-in-diagnosing-idiopathic-membranous-nephropathy-a-systematic-review-and-meta-analysis-of-thsd7a-in-imn
#8
Song Ren, Changwei Wu, Yuan Zhang, Amanda Y Wang, Guisen Li, Li Wang, Daqing Hong
BACKGROUND: THSD7A is a new target antigen of idiopathic membranous nephropathy (IMN). Moreover, malignancies are also found in patients with THSD7A-positive membranous nephropathy. We aimed to systematically evaluate the prevalence of THSD7A in IMN patients and malignancies in THSD7A-positive patients. METHODS: We searched English and Chinese database to 31 December 2017 with the term 'THSD7A' or 'thrombospondin type 1 domain-containing 7A'. Meta-analysis was used to explore the positive rate of THSD7A in the IMN patients...
November 2018: Renal Failure
https://www.readbyqxmd.com/read/29546599/idiopathic-membranous-nephropathy-in-children-treated-with-rituximab-report-of-two-cases
#9
Rossana Malatesta-Muncher, Karen W Eldin, Laurence H Beck, Mini Michael
BACKGROUND: Idiopathic membranous nephropathy is an uncommon cause of nephrotic syndrome in children and can present treatment challenges. The current treatment options of steroids and cyclophosphamide, cyclosporine, or mycophenolate require prolonged treatment durations and the associated side effects may result in nonadherence in children, especially in adolescents. CASE-DIAGNOSIS: We report two adolescent patients with idiopathic membranous nephropathy with nephrotic range proteinuria and elevated anti-phospholipase A2 receptor levels who did not achieve remission with steroids and were later treated with rituximab...
March 15, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29416596/urine-anti-pla2r-antibody-is-a-novel-biomarker-of-idiopathic-membranous-nephropathy
#10
Yu Wang, Yi-Xin He, Tian-Tian Diao, Shi-Yao Wei, Wen-Rui Qi, Cen-Cen Wang, Shu-Min Song, Min Bi, Chun-Mei Li, Cai-Xia Zhang, Yan-Pei Hou, Qiu-Ju Wei, Bing Li
Since urine samples more directly reflect kidney alterations and damage than blood samples, we investigated whether urine anti-PLA2 R antibody (uPLA2 R-Ab) could be utilized similarly to serum anti-PLA2 R antibody (sPLA2 R-Ab) as a noninvasive biomarker of idiopathic membranous nephropathy (IMN). In this study, we performed a qualitative analysis using an indirect immunofluorescence test (IIFT) and measured uPLA2 R-Ab and sPLA2 R-Ab concentrations using an enzyme-linked immunosorbent assay (ELISA) in 28 patients with biopsy-proven IMN and 12 patients with secondary membranous nephropathy (SMN)...
January 2, 2018: Oncotarget
https://www.readbyqxmd.com/read/29403303/the-clinicopathological-features-of-patients-with-membranous-nephropathy
#11
Hanyu Zhu, Qiuxia Han, Dong Zhang, Yong Wang, Jing Gao, Xiaoli Yang, Wenjia Geng, Xiangmei Chen
Background: Membranous nephropathy (MN) represents a distinct glomerular disease which has been considered as a major cause of nephrotic syndrome (NS) in adults. Evidences show that the clinicopathological features of MN are various among MN cases. This study aimed to summarize and analyze the clinicopathological features of patients with MN. Methods: A total of 231 MN patients were recruited in this study. Their clinical and pathological features were collected and analyzed according to their age, gender, pathological stages, and anti-phospholipase A2 receptor (anti-PLA2R) antibodies tests...
2018: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/29378770/management-of-membranous-nephropathy-in-the-pla-2-r-era
#12
Andrew S Bomback
No abstract text is available yet for this article.
May 7, 2018: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29349731/membranous-nephropathy-associated-with-pregnancy-an-anti-phospholipase-a2-receptor-antibody-positive-case-report
#13
Eiichiro Uchino, Daisuke Takada, Haruta Mogami, Takeshi Matsubara, Tatsuo Tsukamoto, Motoko Yanagita
Pregnancy and membranous nephropathy (MN) can occur concurrently with nephrotic syndrome. However, the pathophysiology of MN associated with pregnancy remains unclear, including the involvement of anti-M-type phospholipase A2 receptor (PLA2R) antibody, the major antigen of idiopathic MN (iMN). A treatment for the condition is also not established. We present the case of a 43-year-old pregnant female with incidental proteinuria and hypoalbuminemia. We made a diagnosis of nephrotic syndrome at 11 week gestation...
May 2018: CEN Case Reports
https://www.readbyqxmd.com/read/29340324/temporal-association-between-pla2r-antibodies-and-clinical-outcomes-in-primary-membranous-nephropathy
#14
R Ramachandran, A K Yadav, V Kumar, N Inamdar, R Nada, K L Gupta, V Jha
Introduction: Autoantibodies to M-type phospholipase A2 receptor (aPLA2R) are seen in two-thirds of patients with primary membranous nephropathy (PMN) and are associated with disease activity. However, the precise temporal dynamics between the presence and amount of aPLA2R in circulation, as well as the clinical activity, are not known. We evaluated the temporal association between disease activity and serum aPLA2R during and after treatment in PMN. Methods: The study included all patients with PMN and elevated aPLA2R who were started on immunosuppressive therapy for persistent nephrotic syndrome at a single center between December 2014 and December 2015...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29340242/a-diagnostic-model-for-minimal-change-disease-based-on-biological-parameters
#15
Hanyu Zhu, Qiuxia Han, Dong Zhang, Yong Wang, Jing Gao, Wenjia Geng, Xiaoli Yang, Xiangmei Chen
Background: Minimal change disease (MCD) is a kind of nephrotic syndrome (NS). In this study, we aimed to establish a mathematical diagnostic model based on biological parameters to classify MCD. Methods: A total of 798 NS patients were divided into MCD group and control group. The comparison of biological indicators between two groups were performed with t -tests. Logistic regression was used to establish the diagnostic model, and the diagnostic value of the model was estimated using receiver operating characteristic (ROC) analysis...
2018: PeerJ
https://www.readbyqxmd.com/read/29149305/rituximab-for-non-responsive-idiopathic-membranous-nephropathy-in-a-chinese-cohort
#16
Xin Wang, Zhao Cui, Yi-Miao Zhang, Zhen Qu, Fang Wang, Li-Qiang Meng, Xu-Yang Cheng, Gang Liu, Fu-de Zhou, Ming-Hui Zhao
Background: Rituximab had been shown to be effective in inducing remission of nephrotic syndrome in patients with idiopathic membranous nephropathy (iMN). This study applied rituximab therapy for 36 non-responsive iMN patients to investigate its effects and safety. Methods: Thirty-six iMN patients who were non-responsive to prior immunosuppression were enrolled. Rituximab was used for B-cell depletion in patients, with a goal of <5 B cells/mm3 in the circulation...
November 14, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29126817/serum-anti-pla2r-antibody-as-a-diagnostic-biomarker-of-idiopathic-membranous-nephropathy-the-optimal-cut-off-value-for-chinese-patients
#17
Yipeng Liu, Xuan Li, Chaoqun Ma, Ping Wang, Ju Liu, Hong Su, Hao Zhuo, Xianglei Kong, Dayu Xu, Dongmei Xu
BACKGROUND: The M-type phospholipase A2 receptor (PLA2R) is a specific target autoantigen identified in idiopathic membranous nephropathy (IMN). The autoantibody against PLA2R (anti-PLA2R) may be used to diagnose IMN. However, the appropriate diagnosis cut-off value for Chinese patients with IMN has not been established. METHODS: In total, 119 patients who underwent renal biopsy (57 patients with IMN and 62 patients with non-IMN glomerulonephritis) and 22 healthy individuals were recruited for our observation study from Qianfoshan Hospital between September 2011 and March 2016...
January 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29081027/diagnostic-specificity-of-autoantibodies-to-m-type-phospholipase-a2-receptor-pla2r-in-differentiating-idiopathic-membranous-nephropathy-imn-from-secondary-forms-and-other-glomerular-diseases
#18
A Radice, F Pieruzzi, B Trezzi, G Ghiggeri, P Napodano, M D'Amico, T Stellato, R Brugnano, F Ravera, D Rolla, G Pesce, M E Giovenzana, F Londrino, V Cantaluppi, F Pregnolato, A Volpi, G Rombolà, G Moroni, G Ortisi, Renato A Sinico
Autoantibody against phospholipase A2 receptor (anti-PLA2R) is a sensitive and specific biomarker of idiopathic membranous nephropathy (iMN), being found in approximately 70% of iMN patients and only occasionally in other glomerular diseases. However, whereas its diagnostic specificity vs. normal controls and other glomerulonephritides (GN) has been firmly established, its specificity vs. membranous nephropathy associated with various diseases (sMN) has given inconsistent results. The aim of our study was to evaluate the prevalence of anti-PLA2R antibodies in iMN in comparison with various control groups, including sMN...
April 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29079545/thsd7a-associated-membranous-nephropathy-in-a-patient-with-neurofibromatosis-type-1
#19
Fujun Lin, Dan Zhang, Juan Chang, Xuanli Tang, Wenbin Guan, Gengru Jiang, Chun Zhu, Fan Bian
Target antigens in idiopathic membranous nephropathy (MN) include the phospholipase A2 receptor (PLA2 R), and in some cases, the thrombospondin type 1 domain-containing 7A (THSD7A). A notable phenomenon is the high rate of cancer (reported to be as high as 20%) in patients with THSD7A-associated MN. Neurofibromatosis type 1 (NF1) is an autosomal dominant disease caused by NF1 gene mutation, and clinically characterized by multiple cutaneous neurofibromas and café-au-lait spots. In this article, we report a patient with NF1 who developed THSD7A-associated MN when the NF1 skin lesions deteriorated...
February 2018: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29079480/structure-of-human-m-type-phospholipase-a2-receptor-revealed-by-cryo-electron-microscopy
#20
Yue Dong, Longxing Cao, Hua Tang, Xiangyi Shi, Yongning He
M-type phospholipase A2 receptor (M-PLA2R) is a member of the mannose receptor family and known as the receptor of secretory phospholipase A2s. It has also been identified as the major autoantigen of idiopathic membranous nephropathy, one of the most common causes for nephrotic syndrome in adults. Here we determine the structure of human M-PLA2R ectodomain by cryo-electron microscopy. The results show that the ectodomain has high internal flexibility and forms a compact dual-ring-shaped conformation at acidic pH and adopts extended conformations at basic pH...
December 8, 2017: Journal of Molecular Biology
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