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https://www.readbyqxmd.com/read/28925480/the-role-of-pten-up-regulation-in-suppressing-glomerular-mesangial-cells-proliferation-and-nephritis-pathogenesis
#1
H-Y Gao, C-X Han
OBJECTIVE: Over-proliferation of mesangial cells is the major pathological change of mesangial proliferative glomerulonephritis (MPGN). PTEN-PI3K/AKT pathway plays a role in regulating proliferation of mesangial cells. Anti-thymocyte serum nephritis (ATSN) is a widely used animal model for studying MPGN. This study established ATSN model, on which the role of PTEN-PI3K/AKT signal pathway in MPGN pathogenesis was investigated. MATERIALS AND METHODS: ASTN rat model was established in parallel with control group...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28881045/diagnostic-accuracy-of-immunofluorescence-versus-immunoperoxidase-staining-to-distinguish-immune-complex-mediated-glomerulonephritis-and-c3-dominant-glomerulopathy
#2
Yassine Bouatou, Jesper Kers, Marie S N Chevalier-Florquin, Nike Claessen, Tri Q Nguyen, Jeffrey Damman, Henrique Proença, Joris J T H Roelofs, Sandrine Florquin
AIMS: Membranoproliferative glomerulonephritis (MPGN) has been reclassified from an electron microscopy to an immunofluorescence (IF) based semi quantitative classification with immunoperoxidase (IP) technique as a backup option when IF is not possible. However, no data are available on the interobserver variability, the correlation and the reclassification of MPGN based on these two techniques. METHODS & RESULTS: We retrospectively analyzed cases of type 1 MPGN...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28873225/chronic-hepatitis-c-increases-the-risk-of-chronic-kidney-disease-ckd-while-effective-hcv-treatment-decreases-the-incidence-of-ckd
#3
Haesuk Park, Chao Chen, Wei Wang, Linda Henry, Robert L Cook, David R Nelson
We aimed to assess the risk of chronic kidney disease (CKD) in chronic hepatitis C virus (HCV) infected patients and the incidence reduction of CKD after receipt of HCV treatment. We also evaluated the risk of membranoproliferative glomerulonephritis (MPGN) and cryoglobulinemia in chronic HCV patients. A retrospective cohort analysis of the Truven Health MarketScan Database (2008-2015) in the United States was conducted. In a cohort of 56,448 HCV-infected patients and propensity score (1:3) matched 169,344 non-HCV patients, we examined the association of HCV infection with the incidence of CKD...
September 5, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28868298/case-report-of-spontaneous-remission-of-biopsy-proven-idiopathic-immune-complex-mediated-membranoproliferative-glomerulonephritis
#4
Rehan Shah, Mark S Segal, Michael J Wilkowski
Membranoproliferative glomerulonephritis (MPGN) is a histopathologic diagnosis causing microscopic hematuria, nephrotic range proteinuria, and chronic renal failure. Current understanding divides pathogenesis into two broad categories: immune complex mediated and complement mediated (now termed C3 glomerulopathy). The term idiopathic immune complex-mediated MPGN would apply to a patient without an identifiable source of immune complex production and no evidence of C3 glomerulopathy. Presented is a patient with idiopathic immune complex mediated MPGN and her clinical course...
May 2017: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/28863792/genetics-of-immune-mediated-glomerular-diseases-focus-on-complement
#5
REVIEW
Marina Noris, Giuseppe Remuzzi
The spectrum of immune-mediated glomerular diseases is wide, ranging from rare diseases with well-recognized genetic origins to more common and multifactorial diseases. Immune-mediated glomerular injury is complex and involves both the innate and the adaptive immune systems. In the past 20 years a huge effort has been undertaken to unravel the genetic basis of immune-mediated glomerular diseases. The discovery of abnormalities in genes encoding proteins of the alternative pathway of complement in more than 50% of patients with atypical hemolytic uremic syndrome (aHUS), and in approximately 20% of patients with membranoproliferative glomerulonephritis (MPGN), has highlighted the role of this complement pathway in the pathogenesis of immune-mediated glomerular diseases...
September 2017: Seminars in Nephrology
https://www.readbyqxmd.com/read/28798244/atypical-haemolytic-uremic-syndrome-ahus-and-membranoproliferative-glomerulonephritis-mpgn-different-diseases-or-a-spectrum-of-complement-mediated-glomerular-diseases
#6
Ghada A Ankawi, William F Clark
Historically, patients with kidney diseases caused by genetic or acquired dysregulation of the complement alternative pathway have been grouped into clinical syndromes, C3 glomerulopathy (C3GN/DDD) and thrombotic microangiopathy (TMA), specifically atypical haemolytic uremic syndrome (aHUS). Recent data suggested that these diseases share a common pathophysiology and that patients can transition between glomerulopathies in this spectrum. Histopathologically, the main difference cited is the immunofluorescence (IF) findings, with C3 predominance in C3 glomerulopathy (compared with immunoglobulins and complements in immune complex-mediated membranoproliferative glomerulonephritis (MPGN)) and negative IF in TMA...
August 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28763127/european-veterinary-renal-pathology-service-a-survey-over-a-7-year-period-2008-2015
#7
L Aresu, V Martini, S L Benali, C Brovida, R E Cianciolo, R Dalla Riva, D Trez, J J Van Der Lugt, A Van Dongen, E Zini
BACKGROUND: The European Veterinary Renal Pathology Service (EVRPS) is the first Web-based registry for canine renal biopsy specimens in Europe. HYPOTHESIS/OBJECTIVES: The aim was to verify whether differences exist between the clinical and laboratory presentation of dogs with nephropathy according to renal pathological findings, as defined by light and electron microscopy of renal biopsy specimens submitted to EVRPS. ANIMALS: Renal biopsy specimens of dogs were collected from the archive of the service (n = 254)...
September 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28761237/membranoproliferative-glomerulonephritis-associated-with-a-human-immunodeficiency-virus-infection
#8
H Rafik, M El Amrani, D El Kabbaj
Type 1 membranoproliferative glomerulonephritis (MPGN) is an uncommon manifestation of human immunodeficiency virus (HIV)-associated renal disease in patients coinfected with hepatitis C virus. We report a case of MPGN characterized by nephrotic syndrome associated with HIV without hepatitis C coinfection. The patient had a favorable response to highly active antiretroviral therapy and angiotensin-converting enzyme inhibitors. Recognition of the MPGN lesion in HIV infection devoid of hepatitis C coinfection must be considered...
July 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28745692/-changes-in-the-complement-system-in-membranoproliferative-glomerulonephritis
#9
V A Yurova, L A Bobrova, N L Kozlovskaya, Yu V Korotchaeva, A G Serova, L V Kozlov, S S Andina, K A Demyanova, A M Kuchieva, S V Roshchupkina
AIM: To compare the clinical manifestations membranoproliferative glomerulonephritis (MPGN) in its idiopathic variant, lupus nephritis (LN), and C3 glomerulopathy (C3-GP), by comparing them with changes in the complement system. SUBJECTS AND METHODS: The clinic of nephrology followed up 42 patients with different types of MPGN in 2013 to 2015. The study included 35 patients divided into 3 groups: 1) 8 patients with C3-GP, 2) 13 with idiopathic MPGN; 3) 14 with Class IV LN...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28729648/a-haplotype-in-cfh-family-genes-confers-high-risk-of-rare-glomerular-nephropathies
#10
Yin Ding, Weiwei Zhao, Tao Zhang, Hao Qiang, Jianping Lu, Xin Su, Shuzhen Wen, Feng Xu, Mingchao Zhang, Haitao Zhang, Caihong Zeng, Zhihong Liu, Huimei Chen
Despite distinct renal lesions, a series of rare glomerular nephropathies are reportedly mediated by complement overactivation. Genetic variations in complement genes contribute to disease risk, but the relationship of genotype to phenotype has not been straightforward. Here, we screened 11 complement genes from 91 patients with atypical hemolytic uremic syndrome (aHUS), C3 glomerulopathy (C3G) and membranoproliferative glomerulonephritis type I (MPGN I), and identified the concomitant presence of three missense variations located within the human complement Factor H (CFH) gene cluster...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28663230/tissue-specific-microrna-expression-patterns-in-four-types-of-kidney-disease
#11
Maria Angeles Baker, Seth J Davis, Pengyuan Liu, Xiaoqing Pan, Anna Marie Williams, Kenneth A Iczkowski, Sean T Gallagher, Kaylee Bishop, Kevin R Regner, Yong Liu, Mingyu Liang
MicroRNAs contribute to the development of kidney disease. Previous analyses of microRNA expression in human kidneys, however, were limited by tissue heterogeneity or the inclusion of only one pathologic type. In this study, we used laser-capture microdissection to obtain glomeruli and proximal tubules from 98 human needle kidney biopsy specimens for microRNA expression analysis using deep sequencing. We analyzed specimens from patients with diabetic nephropathy (DN), FSGS, IgA nephropathy (IgAN), membranoproliferative GN (MPGN) (n=19-23 for each disease), and a control group (n=14)...
June 29, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28658768/clinicopathological-analysis-of-glomerular-disease-of-adult-onset-nephrotic-syndrome-in-an-indian-cohort-a-retrospective-study
#12
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
https://www.readbyqxmd.com/read/28658762/role-of-immunofluorescence-in-adult-onset-nephrotic-syndrome-a-study-in-a-tertiary-care-centre-of-western-india
#13
Sharada Rane, Prerana Mutyal, Nicholas Dcunha, Mayur Parkhi, Meenal Jadhav
INTRODUCTION: Study of renal Immunofluorescence (IF) is an ancillary but essential technique in evaluation of renal biopsies in glomerulopathies and also it enlightens on the pathogenesis of nephrotic syndrome. AIM: To determine the role of IF in evaluating definite subtyping and diagnosis of adult onset nephrotic syndrome and attempting clinicopathological correlation. MATERIALS AND METHODS: A total of 52 patients of adult onset nephrotic syndrome were evaluated clinically and with pertinent investigations; and subjected to USG guided percutaneous renal biopsy which was processed and stained for light microscopy and for immunofluorescence by direct method (DIF) using antibodies against IgG, IgM, IgA and C3...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28601198/recurrent-glomerulonephritis-after-kidney-transplantation-risk-factors-and-allograft-outcomes
#14
Penelope J Allen, Steve J Chadban, Jonathan C Craig, Wai H Lim, Richard D M Allen, Philip A Clayton, Armando Teixeira-Pinto, Germaine Wong
Recurrent glomerulonephritis after kidney transplantation is a feared complication because it is unpredictable and may have a negative impact on graft outcomes. To better understand this we collected data from the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry accumulated over 30 years. The incidence, risk factors, and outcomes of recurrent glomerulonephritis in transplant recipients were determined using adjusted Cox proportional hazard and competing risk modeling. A total of 6,597 recipients with biopsy-proven glomerulonephritis as the primary cause of end-stage kidney disease were followed for 51,871 person-years (median duration 7...
June 7, 2017: Kidney International
https://www.readbyqxmd.com/read/28573371/frequency-of-familial-mediterranean-fever-mefv-gene-mutations-in-patients-with-biopsy-proven-primary-glomerulonephritis
#15
Can Huzmeli, Ferhan Candan, Gokhan Bagci, Demet Alaygut, Ali Yilmaz, Asim Gedikli, Binnur Bagci, Meryem Timucin, Ilhan Sezgin, Mansur Kayatas
Primary glomerulopathies are those disorders that affect glomerular structure, function, or both in the absence of a multisystem disorder. We aimed to evaluate the frequency of MEFV gene mutation to show possible coexistence of FMF in patients diagnosed with biopsy-proven primary glomerulonephritis (GN). A total of 64 patients with biopsy-proven primary GN were included in the study. MEFV gene mutations examined retrospectively. The mean age of patients was 39.6 ± 13.4 (range 18-69), 35 of patients were female and 29 of patients were male...
June 1, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28573137/rituximab-for-treatment-of-membranoproliferative-glomerulonephritis-and-c3-glomerulopathies
#16
REVIEW
Michael Rudnicki
Membranoproliferative glomerulonephritis (MPGN) is a histological pattern of injury resulting from predominantly subendothelial and mesangial deposition of immunoglobulins or complement factors with subsequent inflammation and proliferation particularly of the glomerular basement membrane. Recent classification of MPGN is based on pathogenesis dividing MPGN into immunoglobulin-associated MPGN and complement-mediated C3 glomerulonephritis (C3GN) and dense deposit disease (DDD). Current guidelines suggest treatment with steroids, cytotoxic agents with or without plasmapheresis only for subjects with progressive disease, that is, nephrotic range proteinuria and decline of renal function...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28526779/the-phenotypic-spectrum-of-nephropathies-associated-with-mutations-in-diacylglycerol-kinase-%C3%AE%C2%B5
#17
Karolis Azukaitis, Eva Simkova, Mohammad Abdul Majid, Matthias Galiano, Kerstin Benz, Kerstin Amann, Clemens Bockmeyer, Radha Gajjar, Kevin E Meyers, Hae Il Cheong, Bärbel Lange-Sperandio, Therese Jungraithmayr, Véronique Frémeaux-Bacchi, Carsten Bergmann, Csaba Bereczki, Monika Miklaszewska, Dorottya Csuka, Zoltán Prohászka, Patrick Gipson, Matthew G Sampson, Mathieu Lemaire, Franz Schaefer
The recent discovery of mutations in the gene encoding diacylglycerol kinase ε (DGKE) identified a novel pathophysiologic mechanism leading to HUS and/or MPGN. We report ten new patients from eight unrelated kindreds with DGKE nephropathy. We combined these cases with all previously published cases to characterize the phenotypic spectrum and outcomes of this new disease entity. Most patients presented with HUS accompanied by proteinuria, whereas a subset of patients exhibited clinical and histologic patterns of MPGN without TMA...
May 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28509128/a-case-of-rapid-amelioration-of-hepatitis-c-virus-associated-cryoglobulinemic-membranoproliferative-glomerulonephritis-treated-by-interferon-free-directly-acting-antivirals-for-hcv-in-the-absence-of-immunosuppressant
#18
Fumiaki Obata, Taichi Murakami, Junko Miyagi, Sayo Ueda, Taizo Inagaki, Masanori Minato, Hiroyuki Ono, Kenji Nishimura, Eriko Shibata, Masanori Tamaki, Sakiya Yoshimoto, Fumi Kishi, Seiji Kishi, Motokazu Matsuura, Kojiro Nagai, Hideharu Abe, Toshio Doi
Mixed cryoglobulinemic syndrome, which is a systemic vasculitis characterized by the immune complex deposition in small- and medium-sized arteries and most often due to chronic hepatitis C virus (HCV) infection, sometimes clinically manifests as refractory glomerulonephritis or nephritic syndrome. Patients with mixed cryoglobulinemic nephropathy who have a rapidly progressive glomerulonephritis should receive immunosuppressive therapy. After disease stabilization, patients should receive concurrent therapy for the underlying HCV infection...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28508962/proteinuria-rebound-in-iga-nephropathy-associated-with-obesity-related-glomerulopathy
#19
Hiro Matsukura, Masako Sakakibara, Izumi Sakamoto, Miho Tatematsu
IgA nephropathy (IgAN), the most prevalent primary chronic glomerulonephritis worldwide, has three major risk factors: hypertension, proteinuria >1 g/day, and severe renal lesions. Obesity also portends a poor prognosis. A Japanese boy with IgAN showed nephrotic syndrome at presentation. Pathological features resembled those of membranoproliferative glomerulonephritis (MPGN), although IgA deposition differed from MPGN and IgAN. Combination therapy improved renal lesions, but rebound deterioration of proteinuria occurred in this patient, who had marked obesity and hypertension...
November 2016: CEN Case Reports
https://www.readbyqxmd.com/read/28356063/daclatasvir-asunaprevir-based-direct-acting-antiviral-therapy-ameliorate-hepatitis-c-virus-associated-cryoglobulinemic-membranoproliferative-glomerulonephritis-a-case-report
#20
Michiko Shimada, Norio Nakamura, Tetsu Endo, Hideaki Yamabe, Masayuki Nakamura, Reiichi Murakami, Ikuyo Narita, Hirofumi Tomita
BACKGROUND: Direct-acting antivirals (DAAs) dramatically improve the treatment of hepatitis C virus (HCV) infections. However, the effects of DAAs on extra-hepatic manifestations such as HCV-associated glomerulonephritis, especially in cases with renal dysfunction, are not well elucidated. CASE PRESENTATION: A 69-year-old Japanese woman was diagnosed as having chronic hepatitis C, genotype 1b at the age of 55. She presented with hypertension, microscopic hematuria, proteinuria, renal dysfunction, purpura, and arthralgia at the age of 61...
March 29, 2017: BMC Nephrology
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