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"Membranous Nephropathy"

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https://www.readbyqxmd.com/read/28801527/circulating-antibodies-against-thrombospondin-type-i-domain-containing-7a-in-chinese-patients-with-idiopathic-membranous-nephropathy
#1
Jia Wang, Zhao Cui, Jie Lu, Christian Probst, Yi-Miao Zhang, Xin Wang, Zhen Qu, Fang Wang, Li-Qiang Meng, Xu-Yang Cheng, Gang Liu, Hanna Debiec, Pierre Ronco, Ming-Hui Zhao
BACKGROUND AND OBJECTIVES: Thrombospondin type-I domain-containing 7A (THSD7A) was recently identified as the target antigen in about 10% of patients with M-type phospholipase A2 receptor (PLA2R)-negative membranous nephropathy in European and North American populations. The prevalence of THSD7A in other populations and their clinical associations deserve further clarification. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Immunofluorescence assay was performed to investigate anti-THSD7A antibodies in 578 consecutive patients with biopsy-proven idiopathic membranous nephropathy, 114 patients with secondary membranous nephropathy, 64 disease controls, and 20 healthy controls...
August 11, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28791182/malignancy-in-membranous-nephropathy-evaluation-of-incidence
#2
Basil Alnasrallah, John F Collins, L Jonathan Zwi
BACKGROUND: Membranous nephropathy (MN) can be associated with malignancy. However, the relative risk for malignancy remains unclear. It has been reported that higher numbers of inflammatory cells seen in the glomeruli at biopsy correlate with the occurrence of malignancy in patients with MN and might be used to direct screening. METHODS: We examined the occurrence of malignancy in 201 MN patients in Auckland, New Zealand. We also examined the pathology of renal biopsies from 17 MN patients with malignancies and compared the number of inflammatory cells per glomerulus with matched control patients with MN but no malignancy...
2017: International Journal of Nephrology
https://www.readbyqxmd.com/read/28790860/the-level-of-urinary-semaphorin3a-is-associated-with-disease-activity-in-patients-with-minimal-change-nephrotic-syndrome
#3
Akiko Inoue-Torii, Shinji Kitamura, Jun Wada, Kenji Tsuji, Hirofumi Makino
Semaphorin3A is a secreted protein known to be involved in organogenesis, immune responses and cancer. In the kidney, semaphorin3A is expressed in the glomerular podocytes, distal tubules and collecting tubules, and believed to play a role in the regulation of the kidney development and function. We examined the serum and urinary semaphorin3A levels in 72 patients with renal disease and 5 healthy volunteers. The patients had been diagnosed with thin basement membrane disease (n=4), minimal change nephrotic syndrome (MCNS; n=22), IgA nephritis (n=21), membranous nephropathy (n=16) and focal segmental glomerular sclerosis (n=9)...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28789767/-primary-membranous-nephropathy-presenting-as-relapsing-ascites
#4
Kristine Lindhard, Martin Egefjord, Otto Clemmesen
Ascites is common in patients with liver cirrhosis. It may present as a clinical manifestation in nephrotic syndrome in adults, typically with heart- or liver disease together with other oedema. We describe a 64-year-old male patient - with no liver or heart disease - with relapsing ascites and no other oedema, who was surprisingly diagnosed with primary membranous nephropathy (MN), and the autoantibody anti-PLA2R was positive. Through immunotherapy the ascites disappeared. Anti-PLA2R and anti-TSHD7A can be used in the diagnosis (primary/secondary MN) and may play a role in the treatment and prognosis...
July 24, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28781794/a-case-of-membranous-glomerulopathy-associated-with-lung-cancer-and-review-of-the-literature
#5
Aydin Aytekin, Ahmet Ozet, Irem Bilgetekin, Betul Ogut, Aydin Ciltas, Mustafa Benekli
Membraneous nephropathy (MN) is the most commonly occurring nephrotic syndrome in adults as well as the most common paraneoplastic nephropathy associated with solid tumors, and it is mostly associated with gastrointestinal system and lung carcinomas. Accurate diagnosis is important as the treatment of paraneoplastic glomerulonephritis is very varied from that of idiopathic ones. In the current report, a case of a patient that was referred with proteinuria and edema and was diagnosed with lung cancer, and responded markedly to treatment of malignancy, with improvement of MN, is presented...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28766491/a-case-of-severe-nephrotoxicity-associated-with-long-term-dietary-supplement-use
#6
Farrukh M Koraishy, Gilbert W Moeckel, David S Geller
Dietary supplements are widely used for their perceived health benefits without side effects and hence have minimal regulation. However, they have been associated with various toxicities including kidney disease. We report a 65-year-old male who had very heavy daily intake of dietary supplements for 3 years. He presented with acute kidney injury and nephrotic-range proteinuria. The renal biopsy showed acute tubular necrosis with vacuolization, acute interstitial nephritis, and secondary membranous nephropathy, consistent with an non-steroidal anti-inflammatory drug (NSAID)-like nephropathy...
August 2, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28761235/renal-artery-thrombosis-with-renal-infarction-a-rare-cause-of-acute-abdomen
#7
A Nandwani, D Pathania, P K Jha, V Kher
Renal artery thrombosis with renal infarction is a rare entity. Due to the nonspecific clinical presentation, the diagnosis is usually delayed. We describe such a case in a middle-aged man with membranous nephropathy who was in remission and presented with severe abdominal pain. He was managed with selective intra-arterial thrombolysis with a good outcome.
July 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28761153/pla2r-binds-to-the-annexin-a2-s100a10-complex-in-human-podocytes
#8
Maryline Fresquet, Thomas A Jowitt, Edward A McKenzie, Matthew D Ball, Michael J Randles, Rachel Lennon, Paul E Brenchley
Phospholipase A2 receptor (PLA2R) is a member of the mannose receptor family found in podocytes in human kidney. PLA2R is the target of the autoimmune disease, membranous nephropathy, characterised by production of anti-PLA2R autoantibodies which bind to the podocyte. However the function of PLA2R in health and in disease remains unclear. To gain insight into the molecular mechanisms of PLA2R function, we searched for its endogenous binding partners. Proteomic analysis identified annexinA2 as a potential interactor with the extracellular domains of PLA2R...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28748887/nondiabetic-renal-disease-in-patients-with-type-2-diabetes
#9
Ikram Mami, Amel Harzallah, Hayet Kaaroud, Raja Aoudia, Fethi Ben Hamida, Rim Goucha, Taieb Ben Abdallah
Diabetic nephropathy (DN) is one of the major complications of type 2 diabetes mellitus (T2DM). The diagnosis of DN is mostly clinical. Kidney biopsy is indicated only if nondiabetic renal disease (NDRD) is suspected. This study is aimed to assess the prevalence of NDRD and to determine predictor and prognostic factors of DN, NDRD. It was a retrospective analytic study including T2DM patients in whom renal biopsies were performed at our department from 1988 to 2014. Seventy-five patients were included. Mean age was 52...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28745685/-membranous-nephropathy-in-a-russian-population
#10
V A Dobronravov, D A Mayer, O V Berezhnaya, S V Lapin, A V Mazing, V G Sipovsky, A V Smirnov
AIM: To analyze the clinical and morphological manifestations of membranous nephropathy (MN) and to evaluate the efficiency of its therapy. MATERIAL AND METHODS: MN cases in 2009 to 2016 were retrospectively detected with a subsequent analysis of patients with primary MN (PMN). The titer of IgG-autoantibodies to phospholipase A2 receptor (anti-PLA2R Ab) was determined by an indirect immunofluorescence assay. Treatment outcomes, such as the time course of changes in proteinuria, nephrotic syndrome (NS), and the development of complete and partial remissions (CR and PR), were assessed...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28711658/betulinic-acid-isolated-from-the-leaves-of-syzygium-cumini-l-skeels-ameliorates-the-proteinuria-in-experimental-membranous-nephropathy-through-regulating-nrf2-nf-%C3%AE%C2%BAb-pathways
#11
Brijesh Sutariya, Neetika Taneja, Madhusudan Saraf
Membranous nephropathy (MN) is associated with increased oxidative stress and inflammatory markers in the kidney. Betulinic acid (BA) is a potent antioxidant and anti-inflammatory compound isolated from the leaves of Syzygium cumini (L.) Skeels. In the present study, we investigated the effects of BA on experimental MN in rats and explored the mechanisms by which it enhances antioxidant activities and resolves inflammatory condition in experimental MN. Passive Heymann nephritis (PHN) was induced in Sprague-Dawley rats by a single tail vein injection of anti- Fx1A antiserum...
July 13, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28704582/autosomal-dominant-form-of-type-iv-collagen-nephropathy-exists-among-patients-with-hereditary-nephritis-difficult-to-diagnose-clinicopathologically
#12
Aya Imafuku, Kandai Nozu, Naoki Sawa, Eiko Hasegawa, Rikako Hiramatsu, Masahiro Kawada, Junichi Hoshino, Kiho Tanaka, Yasuo Ishii, Kenmei Takaichi, Takeshi Fujii, Kenichi Ohashi, Kazumoto Iijima, Yoshifumi Ubara
AIM: Type IV collagen nephropathies include Alport Syndrome and thin basement membrane nephropathy (TBMN), which are caused by mutations in COL4A3/A4/A5 genes. Recently, the report of patients with heterozygous mutations in COL4A3/A4 have been increasing. The clinical course of these patients has a wide variety, and they are diagnosed as TBMN, autosomal dominant Alport syndrome (ADAS), or familial focal segmental glomerular sclerosis. However, diagnosis, frequency and clinicopathological manifestation of them remains unclear...
July 13, 2017: Nephrology
https://www.readbyqxmd.com/read/28693446/response-to-immunosuppressive-therapy-in-pla2r-associated-and-non-pla2r-associated-idiopathic-membranous-nephropathy-a-retrospective-multicenter-cohort-study
#13
Jia Wang, Qionghong Xie, Zhuxing Sun, Ningxin Xu, Yan Li, Liang Wang, Shaojun Liu, Jun Xue, Chuan-Ming Hao
BACKGROUND: According to renal M type phospholipase A2 receptor (PLA2R) immunohistochemistry, idiopathic membranous nephropathy (IMN) could be categorized into PLA2R-associated and non-PLA2R-associated IMN. We conducted a retrospective, multicenter cohort study with 91 patients to compare the effect of immunosuppressive therapy between PLA2R-associated and non-PLA2R-associated IMN patients. METHODS: A total of 91 biopsy-proven IMN patients from Huashan hospital and People's Hospital of Wuxi in past 5 years were collected into this study...
July 10, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28685717/variants-in-the-promoter-region-of-hla-dqa1-were-associated-with-idiopathic-membranous-nephropathy-in-a-chinese-han-population
#14
Xiao-Song Qin, Jian-Hua Liu, Guan-Ting Lyu, Meng-Le Peng, Fu-Ning Yang, Dong-Chun Qin, Yong-Zhe Li, Yong Liu
BACKGROUND: Idiopathic membranous nephropathy (IMN) is an autoimmune disease and the leading cause of adult nephritic syndrome. HLA-DQA1 had been identified to be associated with IMN in Europeans and the result was replicated in Chinese Han population. In this study, six single nucleotide polymorphisms (SNPs) in the promoter of HLA-DQA1 and other two SNPs with IgA nephropathy were included for the association analysis. METHODS: The SNPs were genotyped in 509 patients and 601 controls by the MassArray iPLEX...
July 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28674357/single-dose-rituximab-therapy-for-refractory-idiopathic-membranous-nephropathy-a-single-center-experience
#15
Takayuki Katsuno, Takenori Ozaki, Hangsoo Kim, Noritoshi Kato, Yasuhiro Suzuki, Shinichi Akiyama, Takuji Ishimoto, Tomoki Kosugi, Naotake Tsuboi, Yasuhiko Ito, Shoichi Maruyama
To date, a recognized treatment for refractory membranous nephropathy (MN) has not been established. Recently, several reports have indicated the efficacy of rituximab as a novel treatment option. However, only a few published accounts exist of rituximab therapy for idiopathic MN (IMN) in the Asian population. We present the cases of three IMN patients who were treated with single-dose rituximab after they showed no response to conventional therapies, including corticosteroids, cyclosporine, cyclophosphamide, mizoribine, and mycophenolate mofetil...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28674044/pla2r-and-thsd7a-disparate-paths-to-the-same-disease
#16
REVIEW
Laurence H Beck
The phospholipase A2 receptor (PLA2R) and thrombospondin type-1 domain-containing 7A (THSD7A) are the two major autoantigens in primary membranous nephropathy (MN), and define two molecular subclasses of this disease. Both proteins are large transmembrane glycoproteins expressed by the podocyte, and both induce IgG4-predominant humoral immune responses that produce circulating autoantibodies that can be used clinically for diagnostic and monitoring purposes. The biologic roles of these proteins remain speculative, although several features of THSD7A suggest a role in adhesion...
July 3, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28669992/treatment-of-membranous-nephropathy-time-for-a-paradigm-shift
#17
REVIEW
Piero Ruggenenti, Fernando C Fervenza, Giuseppe Remuzzi
In patients with membranous nephropathy, alkylating agents (cyclophosphamide or chlorambucil) alone or in combination with steroids achieve remission of nephrotic syndrome more effectively than conservative treatment or steroids alone, but can cause myelotoxicity, infections, and cancer. Calcineurin inhibitors can improve proteinuria, but are nephrotoxic. Most patients relapse after treatment withdrawal and can become treatment dependent, which increases the risk of nephrotoxicity. The discovery of nephritogenic autoantibodies against podocyte M-type phospholipase A2 receptor (PLA2R) and thrombospondin type-1 domain- containing protein 7A (THSD7A) antigens provides a clear pathophysiological rationale for interventions that specifically target B-cell lineages to prevent antibody production and subepithelial deposition...
July 3, 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28664837/rituximab-for-the-treatment-of-membranous-nephropathy-a-single-center-experience
#18
Andreja Aleš Rigler, Alexander Jerman, Aleša Orsag, Nika Kojc, Damjan Kovač, Andrej Škoberne, Špela Borštnar, Željka Večerić Haler, Nuša Avguštin, Radoslav Kveder, Dušan Ferluga, Alenka Vizjak, Jelka Lindič
BACKGROUND: Treatment of idiopathic membranous nephropathy with rituximab was introduced more than a decade ago following experimental data that suggested involvement of B-cell-mediated reactions in its pathogenesis. It was a logical step towards a more selective therapy with less severe side effects as compared to the recommended first-line immunosuppressive therapy with corticosteroids and different immunosuppressant drugs. METHODS: We retrospectively analyzed the anonymous data of patients who were treated with rituximab for idiopathic membranous nephropathy at our institution from January 2006 to July 2016...
2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28661568/everolimus-induced-nephrotic-syndrome-precipitated-by-interaction-with-voriconazole-in-a-patient-with-hodgkin-s-lymphoma
#19
P N Tran, L C Pinter-Brown
WHAT IS KNOWN AND OBJECTIVES: Everolimus is a small molecule that inhibits the mammalian target of rapamycin (mTOR) and is used for treatment of various solid tumours and renal transplant rejection prophylaxis. Whereas everolimus-induced proteinuria was previously observed in 3%-36% renal transplant recipients, nephrotic syndrome was not reported in cancer patients taking everolimus. However, nephrotic syndrome was reported in patients taking sirolimus. CASE SUMMARY: We report the case of a 32-year-old female with relapsed Hodgkin's lymphoma who was on everolimus for 5 years and developed nephrotic syndrome about 2 months after initiation of voriconazole...
June 29, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28658768/clinicopathological-analysis-of-glomerular-disease-of-adult-onset-nephrotic-syndrome-in-an-indian-cohort-a-retrospective-study
#20
Mayur Suryawanshi, Swapnil Karnik, Sanjeet Roy
INTRODUCTION: Primary glomerular disease presenting with adult onset nephrotic syndrome are a major cause of chronic renal failure worldwide. The spectrum of renal disease presenting with nephrotic syndrome has undergone a gradual change globally over the course of time. However, there still exist regional differences in the incidence of primary glomerular diseases causing adult onset nephrotic syndrome. AIM: To observe the spectrum of renal diseases presenting with adult onset nephrotic syndrome with comparative analysis of changing trends over the last five decades with regards to Western and Indian literature...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
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