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Membranous nephropathy

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https://www.readbyqxmd.com/read/29136724/-expert-consensus-for-the-diagnosis-and-treatment-of-patients-with-renal-impairment-of-multiple-myeloma
#1
(no author information available yet)
Renal impairment (RI) is a common complication of multiple myeloma (MM), which is presented as chronic kidney disease (CKD) or acute kidney injury (AKI). The typical pathological feature is cast nephropathy. Presently international system staging (ISS) is used in evaluating MM. Although the classic Durie-Salmon staging system could be still used in clinical practice, it may miss out some patients with renal impairment. For evaluations of RI in MM patients with CKD, it's recommended to assess the estimated glomerular filtration rate (eGFR) by creatinine based formula CKD-epidemiology collaboration (EPI) or modification of diet in renal disease(MDRD) and to stage the renal injuries according to 2013 Kidney Disease Improving Global Outcomes (KDIGO) CKD guidelines...
November 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29130997/non-diabetic-kidney-disease-in-type-2-diabetic-patients-prevalence-clinical-predictors-and-outcomes
#2
Siyar Erdogmus, Saba Kiremitci, Zeynep Kendi Celebi, Serkan Akturk, Neval Duman, Kenan Ates, Sehsuvar Erturk, Gokhan Nergizoglu, Sim Kutlay, Sule Sengul, Arzu Ensari, Kenan Keven
BACKGROUND/AIMS: Diabetic kidney disease (DKD) is one of the most frequent microvascular complications of diabetes and is the leading cause of end-stage kidney disease worldwide. In patients with diabetes, non-diabetic kidney disease (NDKD) can also occur. NDKD can be either alone or superimposed with the DKD. In this study, we aimed to investigate the utility of kidney biopsy in patients with type 2 diabetes mellitus (T2DM) and the predictability of diagnosing DKD versus NDKD from clinical and laboratory data...
November 1, 2017: Kidney & Blood Pressure Research
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
#3
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...
November 7, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29126273/genetics-of-membranous-nephropathy
#4
Sanjana Gupta, Anna Köttgen, Elion Hoxha, Paul Brenchley, Detlef Bockenhauer, Horia C Stanescu, Robert Kleta
An HLA-DR3 association with membranous nephropathy (MN) was described in 1979 and additional evidence for a genetic component to MN was suggested in 1984 in reports of familial MN. In 2009, a pathogenic autoantibody was identified against the phospholipase A2 receptor 1 (PLA2R1). Here we discuss the genetic studies that have proven the association of human leucocyte antigen class II and PLA2R1 variants and disease in MN. The common variants in PLA2R1 form a haplotype that is associated with disease incidence...
November 6, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29115212/endemic-influences-of-political-regimes-healthcare-systems-and-preferences-on-the-frequencies-and-incidences-of-nephropathies-in-eastern-saxony-germany%C3%A2
#5
Sam Sedaghat, Eleène Sahmila Heshmati, Thomas Frese, Wilma Gertrud Rasche, Filip Barinka, Florian Fahr, Joachim Beige, Stephan Schiekofer, Franz Maximilian Rasche
INTRODUCTION: The possible confounding influence of investigator-related preferences, available histological techniques, and healthcare systems on the frequencies and incidences of primary and secondary nephropathies was evaluated in this long-term observation. MATERIALS AND METHODS: The observation time from 1983 to 2010 was divided in regard to the political regimes: a) prior to and after German reunification: German Democratic Republic (GDR, period 1 from 1983 to 1990)/Federal Republic of Germany (FRG, period 2 from 1990 to 2010); and the two heads of the division of nephrology, b) conductor 1 (1983 - 2006) and conductor 2 (2006 - 2010)...
November 8, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29115092/hypocomplementemic-urticarial-vasculitis-syndrome-with-membranous-nephropathy-case-report
#6
Su Woong Jung, Yun Young Choi, In Seung Choi, Seulki Kim, Kyung Hwan Jeong, Ran Song, Sang Hoon Lee, Hyung In Yang, Seung Jae Hong, Yeon Ah Lee
Urticarial vasculitis is a rare disorder that principally manifests with recurrent urticarial, sometimes hemorrhagic, skin lesions and/or angioedema. Its clinical presentation is not always limited to cutaneous lesions and it can potentially affect other organs, such as the joints, lungs, kidneys, and eyes. Systemic involvement can either be present at the onset of disease or develop over time. In cases with systemic manifestations, urticarial vasculitis is more likely to be associated with a low complement level...
December 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29114041/phospholipase-a2-receptor-1-epitope-spreading-at-baseline-predicts-reduced-likelihood-of-remission-of-membranous-nephropathy
#7
Barbara Seitz-Polski, Hanna Debiec, Alexandra Rousseau, Karine Dahan, Christelle Zaghrini, Christine Payré, Vincent L M Esnault, Gérard Lambeau, Pierre Ronco
The phospholipase A2 receptor (PLA2R1) is the major autoantigen in primary membranous nephropathy. Several PLA2R1 epitopes have been characterized, and a retrospective study identified PLA2R1 epitope spreading as a potential indicator of poor prognosis. Here, we analyzed the predictive value of anti-PLA2R1 antibody (PLA2R1-Ab) titers and epitope spreading in a prospective cohort of 58 patients positive for PLA2R1-Ab randomly allocated to rituximab (n=29) or antiproteinuric therapy alone (n=29). At baseline, the epitope profile (CysR, CysRC1, CysRC7, or CysRC1C7) did not correlate with age, sex, time from diagnosis, proteinuria, or serum albumin, but epitope spreading strongly correlated with PLA2R1-Ab titer (P<0...
November 7, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29113918/the-impact-of-diabetes-on-corneal-nerve-morphology-and-ocular-surface-integrity
#8
REVIEW
Maria Markoulli, Judith Flanagan, Shyam Sunder Tummanapalli, Jenny Wu, Mark Willcox
Diabetes mellitus is a chronic disease that results from inadequate insulin production or ineffective insulin utilization. It is one of the most common systemic diseases worldwide with increasing prevalence. Diabetes mellitus is associated with premature mortality, macrovascular complications such as cardiovascular disease, and microvascular complications, including nephropathy leading to kidney failure, potentially blinding diabetic retinopathy, and diabetic neuropathy. While the retinal complications of diabetes are well recognized by eye care professionals, the effects on the ocular surface are poorly understood...
November 4, 2017: Ocular Surface
https://www.readbyqxmd.com/read/29110762/apol1-nephrotoxicity-what-does-ion-transport-have-to-do-with-it
#9
REVIEW
Opeyemi A Olabisi, John F Heneghan
Apolipoprotein L1 (APOL1) protein is the human serum factor that protect human beings against Trypanosoma brucei brucei, the cause of trypanosomiasis. Subspecies of T b brucei that cause human sleeping sickness-T b gambiense and T b rhodesiense evolved molecular mechanisms that enabled them to evade killing by APOL1. Sequence changes (termed G1 and G2) in the APOL1 gene that restored its ability to kill T b rhodesiense also increase the risk of developing glomerular diseases and accelerate progression to end-stage kidney disease...
November 2017: Seminars in Nephrology
https://www.readbyqxmd.com/read/29106654/the-population-level-costs-of-immunosuppression-medications-for-the-treatment-of-glomerulonephritis-are-increasing-over-time-due-to-changing-patterns-of-practice
#10
Sean Barbour, Clifford Lo, Gabriela Espino-Hernandez, Sharareh Sajjadi, John Feehally, Scott Klarenbach, Jagbir Gill
Background: Immunosuppression (IS) is the main treatment for most types of glomerulonephritis (GN). Quantifying the cost of IS is necessary to ensure equitable access to therapies and optimal health outcomes, but the real-world cost of IS treatment for GN is largely unknown. We examined temporal changes in the population-level IS medication costs for GN over a 14-year period in a large Canadian province. Methods: We linked a provincial pathology database (containing all GN cases from 2000 to 2012) with renal and medication administrative databases to capture clinical characteristics and IS medications, with follow-up until 2013...
July 2, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29104503/the-emerging-roles-of-microparticles-in-diabetic-nephropathy
#11
REVIEW
Chen Chen Lu, Kun Ling Ma, Xiong Zhong Ruan, Bi Cheng Liu
Microparticles (MPs) are a type of extracellular vesicles (EVs) shed from the outward budding of plasma membranes during cell apoptosis and/or activation. These microsized particles then release specific contents (e.g., lipids, proteins, microRNAs) which are active participants in a wide range of both physiological and pathological processes at the molecular level, e.g., coagulation and angiogenesis, inflammation, immune responses. Research limitations, such as confusing nomenclature and overlapping classification, have impeded our comprehension of these tiny molecules...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29104039/increased-levels-of-interleukin-22-in-thoracic-aorta-and-plasma-from-patients-with-acute-thoracic-aortic-dissection
#12
Jing Ye, Menglong Wang, Huimin Jiang, Qingwei Ji, Ying Huang, Jianfang Liu, Tao Zeng, Yao Xu, Zhen Wang, Yingzhong Lin, Jun Wan
BACKGROUND: Interleukin (IL)-22 plays important roles in the development of arterial disease, including atherosclerosis and hypertension. However, the relationship between IL-22 and acute thoracic aortic dissection (TAD) remains unknown. METHODS: Blood samples were collected from patients with chest pain who underwent computed tomography angiography of the thoracic aorta but had no known preoperative diagnosis of coronary artery disease, peripheral artery disease, arthritis, and/or membranous nephropathy...
November 3, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29104026/current-insights-into-functions-of-phospholipase-a2-receptor-in-normal-and-cancer-cells-more-questions-than-answers
#13
REVIEW
Olga Sukocheva, Mario Menschikowski, Albert Hagelgans, Nagendra Sastry Yarla, Gabriele Siegert, Pallu Reddanna, Anupam Bishayee
Lipid signaling network was proposed as a potential target for cancer prevention and treatment. Several recent studies revealed that phospholipid metabolising enzyme, phospholipase A2 (PLA2), is a critical regulator of cancer accelerating pathologies and apoptosis in several types of cancers. In addition to functioning as an enzyme, PLA2 can activate a phospholipase A2 receptor (PLA2R1) in plasma membrane. While the list of PLA2 targets extends to glucose homeostasis, intracellular energy balance, adipocyte development, and hepatic lipogenesis, the PLA2R1 downstream effectors are few and scarcely investigated...
November 2, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/29097837/two-types-of-deposits-hyaline-droplets-and-eosinophilic-bodies-associated-with-%C3%AE-2u-globulin-accumulation-in-the-rat-kidney
#14
Masao Hamamura, Takafumi Oshikata, Koshirou Katoku, Minoru Tsuchitani, Ryoji Yamaguchi
Alpha2u-globulin is an adult male rat-specific protein that accumulates spontaneously or inductively in the renal proximal tubular epithelium and forms microscopically observable deposits, which are generally referred to as "hyaline droplets," whereas a specific type of deposits is referred to as "eosinophilic bodies" by Japanese toxicologic pathologists. We compared hyaline droplets and eosinophilic bodies using special stains including immunostaining for α2u-globulin and lysosome-associated membrane protein in spontaneously occurring and d-limonene-induced cases...
October 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/29095250/determination-of-the-optimal-target-level-of-proteinuria-in-the-management-of-patients-with-glomerular-diseases-by-using-different-definitions-of-proteinuria
#15
Youn Kyung Kee, Chan-Yun Yoon, Seung Jun Kim, Sung Jin Moon, Chan Ho Kim, Jung Tak Park, Beom Jin Lim, Tae Ik Chang, Ea Wha Kang, Jeong Hae Kie, Tae-Hyun Yoo, Hyun Joo Jeong, Shin-Wook Kang, Seung Hyeok Han
Proteinuria is a major determinant of adverse renal outcome, and its reduction slows renal progression in glomerular diseases. However, the optimal target of proteinuria in glomerular diseases is unclear, and discrepancies in the definition of proteinuria produce ambiguous findings. Here we investigated the optimal target of proteinuria by using different definitions of proteinuria. We analyzed 574 IgA nephropathy (IgAN), 175 membranous nephropathy (MGN), and 177 focal segmental glomerulosclerosis (FSGS) cases from 3 Korean kidney centers...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29094388/peptide-gam-immunoadsorption-therapy-in-primary-membranous-nephropathy-prism-phase-ii-trial-investigating-the-safety-and-feasibility-of-peptide-gam-immunoadsorption-in-anti-pla2-r-positive-primary-membranous-nephropathy
#16
Patrick Hamilton, Durga Kanigicherla, Prasanna Hanumapura, Lars Walz, Dieter Kramer, Moritz Fischer, Paul Brenchley, Sandip Mitra
INTRODUCTION: Membranous nephropathy (MN) is among the most common causes of nephrotic syndrome in adults worldwide. Most patients have primary MN (PMN), an autoimmune condition associated with the IgG anti-PLA2 R autoantibody. For patients with severe disease, standard of care continues to be a 6-month regime of rotating high dose steroids and immunosuppression that comes with a significant side-effect profile. Immunoadsorption is a relatively safe procedure for the extracorporeal removal of specific immunoglobulins without the need for medications...
November 2, 2017: Journal of Clinical Apheresis
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
#17
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...
October 28, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/29079545/thsd7a-associated-membranous-nephropathy-in-a-patient-with-neurofibromatosis-type-1
#18
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 (PLA2R), 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...
October 24, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29079480/structure-of-human-m-type-phospholipase-a2-receptor-revealed-by-cryo-electron-microscopy
#19
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 (sPLA2s). 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...
October 24, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29079181/de-novo-immune-complex-deposition-in-kidney-allografts-a-series-of-32-patients
#20
Isaac E Lloyd, Faris Ahmed, Monica P Revelo, Mazdak A Khalighi
Immune complex deposition in kidney allografts can include both recurrent and de novo processes. Recurrent glomerulonephritis is a well-recognized phenomenon and has been shown to be a common cause of allograft failure. De novo immune complex-mediated disease remains relatively poorly characterized, likely owing to the less frequent use of immunofluorescence and electron microscopy in the transplant setting. We performed a retrospective review of kidney allograft biopsies showing glomerular immune complex deposition...
October 24, 2017: Human Pathology
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