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Glomerulonephrities

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https://www.readbyqxmd.com/read/28214836/hepatitis-b-virus-x-protein-reduces-podocyte-adhesion-via-downregulation-of-%C3%AE-3%C3%AE-1-integrin
#1
Ping He, Dajun Liu, Beiru Zhang, Guangyu Zhou, Xuesong Su, Yanqiu Wang, Detian Li, Xu Yang
BACKGROUND/AIMS: Hepatitis B virus (HBV)-associated glomerulonephritis (HBV-GN) is characterized by a reduced number of podocytes due to apoptosis and shedding from the basement membrane. However, the pathological mechanism of HBV-GN is unclear. We previously showed that hepatitis B virus X protein (HBx) promotes apoptosis in tubular epithelial cells. In this study, we transfected podocytes with HBx and examined the effects on adhesion and apoptosis of these cells. METHODS: Podocytes were transfected with pc-DNA3...
February 8, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28213474/a-bayesian-approach-for-analysis-of-whole-genome-bisulphite-sequencing-data-identifies-disease-associated-changes-in-dna-methylation
#2
Owen J L Rackham, Sarah R Langley, Thomas Oates, Eleni Vradi, Nathan Harmston, Prashant K Srivastava, Jacques Behmoaras, Petros Dellaportas, Leonardo Bottolo, Enrico Petretto
DNA methylation is a key epigenetic modification involved in gene regulation whose contribution to disease susceptibility remains to be fully understood. Here, we present a novel Bayesian smoothing approach (called ABBA) to detect differentially methylated regions (DMRs) from whole-genome bisulphite sequencing (WGBS). We also show how this approach can be leveraged to identify disease-associated changes in DNA methylation, suggesting mechanisms through which these alterations might affect disease. From a data modeling perspective, ABBA has the distinctive feature of automatically adapting to different correlation structures in CpG methylation levels across the genome whilst taking into account the distance between CpG sites as a covariate...
February 17, 2017: Genetics
https://www.readbyqxmd.com/read/28210841/rare-genetic-variant-in-the-cfb-gene-presenting-as-atypical-hemolytic-uremic-syndrome-and-immune-complex-diffuse-membranoproliferative-glomerulonephritis-with-crescents-successfully-treated-with-eculizumab
#3
Khalid Alfakeeh, Mohammed Azar, Majid Alfadhel, Alsuayri Mansour Abdullah, Nourah Aloudah, Khaled O Alsaad
BACKGROUND: Complement factor B gene (CFB) is an important component of the alternate pathway of complement activation that provides an active subunit that associates with C3b to form the C3 convertase, which is an essential element in complement activation. Among the complement-associated disorders, mutations and pathogenic variants in the CFB gene are relatively rare phenomena. Moreover, mutated CFB affiliation with immune-complex diffuse membranoproliferative glomerulonephritis (IC-MPGN) and atypical hemolytic uremic syndrome (aHUS) are considered a highly rare occurrence...
February 16, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28210641/atypical-plasmacytic-proliferation-in-a-case-of-c3-glomerulopathy-pathophysiology-demystified
#4
Osama Elfituri, Nathan Aardsma, Suman Setty, Frederick Behm, Kimberly Czech
An 11-year-old Hispanic female underwent evaluation of asymptomatic proteinuria and hematuria. The patient denied fever, edema, and gross hematuria. Urinalysis showed mild proteinuria, and a urine microscopic examination revealed red blood cells. Screening tests for glomerulonephritis revealed a low C3 and negative ANA, ASO, DNAse-B, and ANCA. Histological examination of a renal biopsy specimen showed glomeruli with endocapillary proliferation, a predominant C3 deposition in the capillary loops by immunofluorescence, and electron dense deposits in the mesangium, paramesangium, and capillary walls by electron microscopy consistent with a diagnosis of C3 glomerulopathy...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28207635/kidney-transplantation-rates-across-glomerulonephritis-subtypes-in-the-united-states
#5
Michelle M O'Shaughnessy, Sai Liu, Maria E Montez-Rath, Richard A Lafayette, Wolfgang C Winkelmayer
BACKGROUND: Whether kidney transplantation rates differ by glomerulonephritis (GN) subtype remains largely unknown. METHODS: Using the US Renal Data System, we identified all adult patients with ESRD attributed to 1 of 6 GN subtypes who initiated dialysis in the US (1996-2013). Patients with diabetic nephropathy (DN) and autosomal-dominant polycystic kidney disease (ADPKD) served as "external" non-GN comparators. Using Cox proportional hazards regression, with death considered a competing risk, we estimated hazard ratios [HRs (95% confidence intervals)] for first kidney transplantation, controlling for year, demographics, comorbidities, socioeconomic factors, and Organ Procurement Organization (OPO)...
February 15, 2017: Transplantation
https://www.readbyqxmd.com/read/28205354/mini-review-a-unique-case-of-crescentic-c3-glomerulonephritis
#6
Dharmenaan Palamuthusingam, Murty Mantha, Kimberley Oliver, Ketan Bavishi, Shyam Dheda
Kidney involvement is an under-recognized complication of non-Hodgkin lymphomas. They occur in a variety of mechanisms and differ widely in their clinical presentation. We take this opportunity to report a case of a 65 year-old man who developed a rapidly progressive glomerulonephritis within days after completing his first cycle of R-CHOP (Rituximab, Cyclophosphamide, Doxorubicin, Vincristine, Prednisolone) chemotherapy for newly diagnosed mantle cell lymphoma. He was odematous, hypertensive, oliguric with nephrotic range proteinuria and an active urine sediment...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28203574/resolution-of-q-fever-associated-cryoglobulinemia-with-anti-cd20-monoclonal-antibody-treatment
#7
Kellie L Hawkins, Edward N Janoff, Robert W Janson
Immunologic phenomena can complicate chronic infections with Coxiella burnetii (Q fever), including immune complex deposition causing vasculitis, neuropathy, and glomerulonephritis. We describe the case of a man with Q fever endocarditis, mixed cryoglobulinemia, and life-threatening vasculitis driven by immune complex deposition who was successfully treated with B cell depleting therapy (rituximab).
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28201996/urinary-sediment-mirnas-reflect-tubulointerstitial-damage-and-therapeutic-response-in-iga-nephropathy
#8
Shuang Liang, Guang-Yan Cai, Zhi-Yu Duan, Shu-Wen Liu, Jie Wu, Yang Lv, Kai Hou, Zuo-Xiang Li, Xue-Guang Zhang, Xiang-Mei Chen
BACKGROUND: Immunoglobulin A nephropathy (IgAN) is the most common glomerulonephritis worldwide. The clinical spectrum of IgAN varies from minor urinary abnormalities to rapidly progressive renal failure. Evaluation of the disease by repeated renal biopsy is not practical due to its invasive procedure. Urinary sediment miRNAs promise to serve as non-invasive biomarkers to assess kidney injury of IgAN. METHODS: Fifty two biopsy-proven IgAN patients and twenty five healthy controls were enrolled in the study...
February 15, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28191821/crucial-role-of-mesangial-cell-derived-connective-tissue-growth-factor-in-a-mouse-model-of-anti-glomerular-basement-membrane-glomerulonephritis
#9
Naohiro Toda, Kiyoshi Mori, Masato Kasahara, Akira Ishii, Kenichi Koga, Shoko Ohno, Keita P Mori, Yukiko Kato, Keisuke Osaki, Takashige Kuwabara, Katsutoshi Kojima, Daisuke Taura, Masakatsu Sone, Taiji Matsusaka, Kazuwa Nakao, Masashi Mukoyama, Motoko Yanagita, Hideki Yokoi
Connective tissue growth factor (CTGF) coordinates the signaling of growth factors and promotes fibrosis. Neonatal death of systemic CTGF knockout (KO) mice has hampered analysis of CTGF in adult renal diseases. We established 3 types of CTGF conditional KO (cKO) mice to investigate a role and source of CTGF in anti-glomerular basement membrane (GBM) glomerulonephritis. Tamoxifen-inducible systemic CTGF (Rosa-CTGF) cKO mice exhibited reduced proteinuria with ameliorated crescent formation and mesangial expansion in anti-GBM nephritis after induction...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28187132/gwas-for-serum-galactose-deficient-iga1-implicates-critical-genes-of-the-o-glycosylation-pathway
#10
Krzysztof Kiryluk, Yifu Li, Zina Moldoveanu, Hitoshi Suzuki, Colin Reily, Ping Hou, Jingyuan Xie, Nikol Mladkova, Sindhuri Prakash, Clara Fischman, Samantha Shapiro, Robert A LeDesma, Drew Bradbury, Iuliana Ionita-Laza, Frank Eitner, Thomas Rauen, Nicolas Maillard, Francois Berthoux, Jürgen Floege, Nan Chen, Hong Zhang, Francesco Scolari, Robert J Wyatt, Bruce A Julian, Ali G Gharavi, Jan Novak
Aberrant O-glycosylation of serum immunoglobulin A1 (IgA1) represents a heritable pathogenic defect in IgA nephropathy, the most common form of glomerulonephritis worldwide, but specific genetic factors involved in its determination are not known. We performed a quantitative GWAS for serum levels of galactose-deficient IgA1 (Gd-IgA1) in 2,633 subjects of European and East Asian ancestry and discovered two genome-wide significant loci, in C1GALT1 (rs13226913, P = 3.2 x 10-11) and C1GALT1C1 (rs5910940, P = 2...
February 10, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28186568/age-determined-severity-of-anti-myeloperoxidase-autoantibody-mediated-glomerulonephritis-in-mice
#11
Qi Wang, Mirjan M van Timmeren, Arjen H Petersen, Jun Yuan, Jill Moser, Elisabeth Brouwer, Johanna Westra, AnneMieke M H Boots, Peter Heeringa
No abstract text is available yet for this article.
February 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28184378/relapse-of-hcv-genotype-1b-infection-after-sofosbuvir-ledipasvir-treatment-presenting-as-de-novo-cryoglobulinemic-vasculitis
#12
Mohammad Qasim Khan, Alan D Moreno, Nora Joseph, George Kim, Claus J Fimmel
Relapse of hepatitis C virus (HCV) genotype 1 infection after combination therapy with sofosbuvir and ledipasvir is unusual. We report a treatment-naïve, non-cirrhotic patient in whom the relapse of genotype 1b HCV infection was accompanied by de novo cryoglobulinemic vasculitis and glomerulonephritis, requiring hemodialysis for acute renal failure. Sequence analysis revealed several resistance-associated variants in the HCV NS5a gene but not in NS3/4A. The patient's vasculitis was successfully treated with immunosuppression and plasmapheresis, followed by retreatment of HCV with a combination of sofosbuvir, simeprevir, and ribavirin...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28182039/hemodialysis-outcomes-and-practice-patterns-in-end-stage-renal-disease-experience-from-a-tertiary-care-hospital-in-kerala
#13
G R Lakshminarayana, L G Sheetal, A Mathew, R Rajesh, G Kurian, V N Unni
This study was planned to analyze the hemodialysis practice patterns from a tertiary care referral centre as there is very limited data from India. All patients of ESRD on maintenance hemodialysis (MHD) in dialysis unit at AIMS, Kochi, Kerala for a minimum period of 3 months were included. A total of 134 patients (M: F 2:1) with age of 20 to 84 years (Mean: 59.83; SD: 11.98) were studied. The most common causes of ESRD in study population were diabetic nephropathy (DN) (59.7%) followed by unclassified group (19...
January 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28180010/extreme-thrombocytosis-presenting-in-anti-neutrophil-cytoplasmic-autoantibodies-associated-crescentic-glomerulonephritis-with-immune-complex-deposits-a-case-report
#14
Zhang Xuemei, Diao Yongshu, Zhang Ling, Yang Yingying, Fu Ping
INTRODUCTION: We describe a female patient with extreme reactive thrombocytosis (RT) in anti-neutrophil cytoplasmic autoantibodies (ANCA)-associated crescentic glomerulonephritis (CGN) with immune complex deposits, which has never been reported before. CASE PRESENTATION: A female adolescent with symptoms of oliguria and gross hematuresis had serious renal function impairment (crescent formation and immune complex deposits in renal pathology examination with positive serum ANCA) and extreme thrombocytosis...
October 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28176476/recurrent-atypical-haemolytic-uraemic-syndrome-post-kidney-transplant-due-to-a-cd46-mutation-in-the-setting-of-smarcal1-mediated-inherited-kidney-disease
#15
REVIEW
Samuel Chan, Andrew J Mallett, Chirag Patel, Ross S Francis, David W Johnson, David W Mudge, Nicole M Isbel
Disorders in the regulation of the alternate complement pathway often result in complement-mediated damage to the microvascular endothelium and can be associated with both glomerulonephritis and atypical haemolytic uraemic syndrome. Inherited defects in complement regulatory genes or autoantibodies against complement regulatory proteins are predictive of the severity of the disease and the risk of recurrence post kidney transplantation. Heterozygous mutations in CD46, which codes for a transmembrane cofactor glycoprotein membrane cofactor protein, usually have a lower incidence of end-stage kidney disease and decreased risk of recurrent disease post transplant, as wild-type membrane cofactor protein is present in the transplanted kidney...
February 2017: Nephrology
https://www.readbyqxmd.com/read/28176473/durable-remission-of-c3-glomerulonephritis-with-mycophenolate-mofetil
#16
REVIEW
Nicole Lioufas, Moira Finlay, Thomas Barbour
In C3 glomerulopathy, uncontrolled complement C3 activation via the alternative pathway results in glomerular C3 deposition and, in many cases, progressive renal failure. Despite advances in understanding of C3G pathogenesis over the last few years, there are no proven treatments. We describe a patient in whom C3 glomerulopathy was associated with renal impairment and elevated serum free kappa light chains. An initial response to corticosteroids was followed by relapse once steroids were weaned, prompting use of mycophenolate mofetil to maintain remission...
February 2017: Nephrology
https://www.readbyqxmd.com/read/28166084/unexpected-complication-of-cocaine-associated-anti-neutrophil-cytoplasmic-antibody-vasculitis-related-to-persistent-in-hospital-cocaine-use
#17
Travis D Olives, Rebecca L Kornas, Russell Fujisawa, Jon B Cole
INTRODUCTION: Levamisole-adulterated cocaine has been implicated in anti-neutrophil cytoplasmic antibody (ANCA) vasculitis. We present a case of spontaneous intraperitoneal hemorrhage, an unexpectedly severe complication of cocaine-related ANCA vasculitis, developing late during hospitalization. CASE REPORT: An adult male with a history of hepatitis C, distant cocaine use, and limited health care presented to a local emergency department (ED) with volume overload, renal failure, hyperkalemia and non-anion gap metabolic acidosis...
February 3, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28162051/henoch-schonlein-purpura-post-streptococcal-glomerulonephritis-and-acute-rheumatic-carditis-after-group-a-%C3%AE-haemolytic-streptococcal-infection
#18
Seçil Arslansoyu Çamlar, Alper Soylu, İpek Akil, Mehtat Ünlü, Şenol Coşkun, Pelin Ertan, Salih Kavukçu
Besides association with acute rheumatic fever (ARF) and acute glomerulonephritis (APSGN), in up to 40% of cases, Group A β-haemolytic streptococcal (GABHS) infections are also implicated as a trigger for Henoch-Schonlein purpura (HSP). A 7-year-old girl with GABHS throat infection who developed HSP, APSGN and rheumatic carditis is reported. She presented with palpable purpura and arthritis in both ankles and later developed carditis characterised by mitral/aortic regurgitation and glomerulonephritis characterised by mixed nephritic/nephrotic syndrome...
February 6, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28161838/anticoagulant-related-nephropathy-a-case-report-and-review-of-the-literature-of-an-increasingly-recognized-entity
#19
REVIEW
Rigas G Kalaitzidis, Anila Duni, Georgios Liapis, Olga Balafa, Sofia Xiromeriti, Paulos Karolos Rapsomanikis, Moses S Elisaf
Treatment with oral anticoagulants has been associated with worsening kidney function in patients with chronic kidney disease (CKD) as well as among patients without underlying CKD. Thus, anticoagulant-related nephropathy (ARN) is an increasingly recognized entity nowadays, mainly associated with warfarin anticoagulation. Recent evidence indicates that patients treated with the direct anticoagulants may also be at risk of ARN. However, the true incidence of anticoagulant-related nephropathy is difficult to determine...
February 4, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28161700/clinical-features-and-outcomes-of-a-racially-diverse-population-with-fibrillary-glomerulonephritis
#20
Fernanda Payan Schober, Meghan A Jobson, Caroline J Poulton, Harsharan K Singh, Volker Nickeleit, Ronald J Falk, J Charles Jennette, Patrick H Nachman, William F Pendergraft Iii
BACKGROUND: Fibrillary glomerulonephritis is characterized by randomly arranged fibrils, approximately 20 nm in diameter by electron microscopy. Patients present with proteinuria, hematuria and kidney insufficiency, and about half of the reported patients progress to end-stage kidney disease within 4 years. The dependence of patient characteristics and outcomes on race has not been explored. In this study, we describe a cohort of patients with fibrillary glomerulonephritis and compare their clinical characteristics and outcomes with those of patients previously described...
February 4, 2017: American Journal of Nephrology
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