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Glomerular nephritis

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https://www.readbyqxmd.com/read/28617440/the-nf-%C3%AE%C2%BAb1-is-a-key-regulator-of-acute-but-not-chronic-renal-injury
#1
Amy Fearn, Gerhard R Situmorang, Christopher Fox, Fiona Oakley, Rachel Howarth, Caroline L Wilson, Agklinta Kiosia, Michael G Robson, Derek A Mann, Anna Moles, Neil S Sheerin
The NF-κB family of transcription factors is important for many cellular functions, in particular initiation and propagation of inflammatory and immune responses. However, recent data has suggested that different subunits of the NF-κB family can suppress the inflammatory response. NF-κB1, from the locus nfκb1, can inhibit transcription, acting as a brake to the recognised pro-inflammatory activity of other NF-κB subunits. We tested the function of NF-κB1 in an acute (nephrotoxic serum (NTS) nephritis) and a chronic (unilateral ureteric obstruction (UUO)) model of renal injury using NF-κB1 (nfκb1(-/-)) knockout mice...
June 15, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28604827/a-novel-in-vivo-method-to-quantify-slit-diaphragm-protein-abundance-in-murine-proteinuric-kidney-disease
#2
Raphael Haase, Sebastian Alexander Potthoff, Catherine Meyer-Schwesinger, Clara Frosch, Thorsten Wiech, Ulf Panzer, Eva Königshausen, Johannes Stegbauer, Lorenz Sellin, Lars Christian Rump, Ivo Quack, Magdalena Woznowski
Injury of the glomerular filter causes proteinuria by disrupting the sensitive interplay of the glomerular protein network. To date, studies of the expression and trafficking of glomerular proteins have been mostly limited to in vitro or histologic studies. Here, we report a novel in vivo biotinylation assay that allows the quantification of surface expression of glomerular proteins in mice. Kidneys were perfused in situ with biotin before harvest. Afterwards glomeruli were isolated and lyzed. The protein of interest was separated by immunoprecipitation and the amount of surface-expressed protein was quantified by Western blot analysis with streptavidin staining...
2017: PloS One
https://www.readbyqxmd.com/read/28597189/a-podocyte-view-of-membranous-nephropathy-from-heymann-nephritis-to-the-childhood-human-disease
#3
REVIEW
Pierre Ronco, Hanna Debiec
Membranous nephropathy (MN) is characterized by an accumulation of immune deposits on the subepithelial side of the glomerular basement membrane, which results in complement activation and proteinuria. Since 2002, several major antigens of the podocyte have been identified in human MN, the first one being neutral endopeptidase (NEP), the alloantigen involved in neonatal cases of MN that occur in newborns from NEP-deficient mothers. This discovery opened the field to the major advances that have occurred since then in the pathophysiology and treatment of MN...
June 8, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28595914/ischemia-induced-glomerular-parietal-epithelial-cells-hyperplasia-commonly-misdiagnosed-cellular-crescent-in-renal-biopsy
#4
Yeting Zeng, Xinrui Wang, Feilai Xie, Zhiyong Zheng
Ischemic pseudo-cellular crescent (IPCC) that is induced by ischemia and composed of hyperplastic glomerular parietal epithelial cells resembles cellular crescent. In this study, we aimed to assess the clinical and pathological features of IPCC in renal biopsy to avoid over-diagnosis and to determine the diagnostic basis. 4 IPCC cases diagnosed over a 4-year period (2012-2015) were evaluated for the study. Meanwhile, 5 cases of ANCA-associated glomerulonephritis and 5 cases of lupus nephritis (LN) were selected as control...
April 20, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28584626/mmp2-and-mmp9-associate-with-crescentic-glomerulonephritis
#5
Tessa M Phillips, Mitali Fadia, Tom N Lea-Henry, Jonathan Smiles, Giles D Walters, Simon H Jiang
Background: Systemic lupus erythematosus (SLE) is a systemic autoimmune disease characterized by multiple organ involvement. Lupus nephritis (LN) is a common manifestation with a wide variety of histological appearances. Matrix metalloproteinases (MMP) 2 and 9 are gelatinases capable of degrading glomerular basement membrane type IV collagen, which have been associated with LN. We examine the expression of MMP2 and MMP9 in different classes of LN. Methods: MMP2 and MMP9 expression was detected by immunohistochemistry in sections from renal biopsy specimens with class III, class IV and class V LN (total n = 31), crescentic immunoglobulin A nephropathy (n = 6), pauci-immune glomerulonephritis (n = 7), minimal change disease (n = 2), mesangiocapillary glomerulonephritis (n = 7), diabetic nephropathy (n = 12) and histologically normal controls (n = 8)...
April 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28584258/cathepsin-s-inhibition-combines-control-of-systemic-and-peripheral-pathomechanisms-of-autoimmune-tissue-injury
#6
Maia Tato, Santhosh V Kumar, Yajuan Liu, Shrikant R Mulay, Solange Moll, Bastian Popper, Jonathan N Eberhard, Dana Thomasova, Arne Christian Rufer, Sabine Gruner, Wolfgang Haap, Guido Hartmann, Hans-Joachim Anders
Cathepsin(Cat)-S processing of the invariant chain-MHC-II complex inside antigen presenting cells is a central pathomechanism of autoimmune-diseases. Additionally, Cat-S is released by activated-myeloid cells and was recently described to activate protease-activated-receptor-(PAR)-2 in extracellular compartments. We hypothesized that Cat-S blockade targets both mechanisms and elicits synergistic therapeutic effects on autoimmune tissue injury. MRL-(Fas)lpr mice with spontaneous autoimmune tissue injury were treated with different doses of Cat-S inhibitor RO5459072, mycophenolate mofetil or vehicle...
June 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28583553/living-donor-kidney-transplantation-after-brachytherapy-for-prostate-cancer-case-report
#7
S Harada, H Ushigome, K Masuda, T Matsuyama, T Nakamura, K Koshino, T Iida, S Nobori, N Yoshimura
INTRODUCTION: There is no obvious criterion about kidney transplantation for patients with pretransplant malignancy. Minimum tumor-free waiting periods differ according to type of cancer, staging, site of occurrence, response to therapy, and risk of cancer recurrence. We report a case of living donor kidney transplantation (LDKT) in a patient after brachytherapy for prostate cancer. CASE REPORT: The patient was a 65-year-old man with chronic kidney disease due to chronic glomerular nephritis...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28577559/ectopic-germinal-center-and-megalin-defect-in-primary-sjogren-syndrome-with-renal-fanconi-syndrome
#8
Jing Wang, Yubing Wen, Mengyu Zhou, Xiaoxiao Shi, Lanping Jiang, Mingxi Li, Yang Yu, Xuemei Li, Xuewang Li, Wen Zhang, Andrew L Lundquist, Limeng Chen
BACKGROUND: This study reports the clinical and pathological features of 12 cases of primary Sjogren syndrome (pSS) with renal involvement presenting with proximal tubular dysfunction in a single center, and investigates the possible correlation of ectopic germinal center formation and megalin/cubilin down-expression. METHOD: Clinical and pathological records were reviewed. Immunohistochemistry was carried out to detect megalin, cubilin, CD21 and IL-17 expression...
June 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28554749/significance-of-m2-macrophages-in-glomerulonephritis-with-crescents
#9
Jun Li, Ya-Fen Yu, Chang-Hua Liu, Cui-Mei Wang
OBJECTIVES: CD163 and CD206, markers of M2 macrophages, possesses anti-inflammatory properties. This study aims to investigate the clinicopathologic significance of M2 macrophages in patients of glomerulonephritis with crescents. METHODS: Renal tissue samples from patients of glomerulonephritis with more than 30% cell or cell-fibrous crescents, including lupus nephritis (LN, n=14), anti-neutrophil cytoplasmic antibody-associated vasculitis (AAV, n=14), IgA nephropathy(IgAN) (n=11), Henoch Schonlein purpura glomerulonephritis(HSPGN)(n=8)were included in this study...
April 20, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28540445/indications-for-kidney-biopsy-in-idiopathic-childhood-nephrotic-syndrome
#10
Alanoud Alshami, Abishek Roshan, Marisa Catapang, Jasper J Jöbsis, Trevor Kwok, Nonnie Polderman, Jennifer Sibley, Matt Sibley, Cherry Mammen, Douglas G Matsell
BACKGROUND: Most cases of childhood nephrotic syndrome (NS) are due to minimal change disease (MCD), while a minority of children have focal segmental glomerulosclerosis (FSGS) and an unfavorable clinical course, requiring a kidney biopsy to confirm diagnosis. We hypothesized that clinical characteristics at diagnosis and initial response to corticosteroid treatment accurately predict FSGS and can be used to guide consistent practice in the indications for kidney biopsy. METHODS: This was a case control study (1990-2012)...
May 24, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28522651/pregnancy-and-glomerular-disease-a-systematic-review-of-the-literature-with-management-guidelines
#11
Kimberly Blom, Ayodele Odutayo, Kate Bramham, Michelle A Hladunewich
During pregnancy, CKD increases both maternal and fetal risk. Adverse maternal outcomes include progression of underlying renal dysfunction, worsening of urine protein, and hypertension, whereas adverse fetal outcomes include fetal loss, intrauterine growth restriction, and preterm delivery. As such, pregnancy in young women with CKD is anxiety provoking for both the patient and the clinician providing care, and because the heterogeneous group of glomerular diseases often affects young women, this is an area of heightened concern...
May 18, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28515361/lupus-and-proliferative-nephritis-are-pad4-independent-in-murine-models
#12
Rachael A Gordon, Jan M Herter, Florencia Rosetti, Allison M Campbell, Hiroshi Nishi, Michael Kashgarian, Sheldon I Bastacky, Anthony Marinov, Kevin M Nickerson, Tanya N Mayadas, Mark J Shlomchik
Though recent reports suggest that neutrophil extracellular traps (NETs) are a source of antigenic nucleic acids in systemic lupus erythematosus (SLE), we recently showed that inhibition of NETs by targeting the NADPH oxidase complex via cytochrome b-245, β polypeptide (cybb) deletion exacerbated disease in the MRL.Faslpr lupus mouse model. While these data challenge the paradigm that NETs promote lupus, it is conceivable that global regulatory properties of cybb and cybb-independent NETs confound these findings...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28509121/antithyroid-drug-associated-mpo-anca-positive-tubulointerstitial-nephritis-in-a-type-2-diabetes-patient-a-case-report
#13
Shinsuke Nishimura, Kazushi Nakao, Masaya Takeda, Ikuko Matsuura, Yoshihisa Nomura, Sonei Shojima, Yuriko Yamamura, Kazuyuki Fujita, Noriya Momoki, Keisuke Maruyama, Masahiro Yamamura, Makoto Hiramatsu
A 54-year-old man diagnosed with type 2 diabetes and hyperthyroidism was prescribed propylthiouracil (PTU) after the patient developed hepatic dysfunction on thiamazole. At 50 mg/day of PTU, he was stable with thyroid-stimulating hormone receptor and thyrotropic antibody titers remaining stable. After four years of taking PTU, he was referred to the Department of Nephrology due to a rapid increase in his serum creatinine (Cr) level. He showed impaired renal function (Cr 2.26 mg/dL; estimated glomerular filtration rate (eGFR), 25 mL/min)...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28495931/neutrophil-extracellular-traps-drive-endothelial-to-mesenchymal-transition
#14
Elmar Pieterse, Nils Rother, Marjolein Garsen, Julia Hofstra, Simon Satchell, Markus Hoffmann, Markus Loeven, Hanneke Knaapen, Olivier van der Heijden, Jo Berden, Luuk Hilbrands, Johan van der Vlag
OBJECTIVE: An excessive release and impaired degradation of neutrophil extracellular traps (NETs) leads to the continuous exposure of NETs to the endothelium in a variety of hematologic and autoimmune disorders, including lupus nephritis. This study aims to unravel the mechanisms through which NETs jeopardize vascular integrity. APPROACH AND RESULTS: Microvascular and macrovascular endothelial cells were exposed to NETs, and subsequent effects on endothelial integrity and function were determined in vitro and in vivo...
May 11, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28444577/comparison-of-clinical-serological-and-prognostic-differences-among-juvenile-adult-and-late-onset-lupus-nephritis-in-korean-patients
#15
Ji-Hyoun Kang, Dong-Jin Park, Kyung-Eun Lee, Ji Shin Lee, Yoo-Duk Choi, Shin-Seok Lee
We investigated whether lupus nephritis (LN) patients could be distinguished based on the time of disease onset and, if so, whether the groups differed in their clinical and laboratory features and long-term prognosis in ethnically homogeneous Korean patients. We enrolled 117 systemic lupus erythematosus patients with available clinical data at the time of renal biopsy of LN. Sociodemographic, clinical, and laboratory data and concomitant diseases were evaluated at the time of renal biopsy. We divided LN patients, according to age at LN diagnosis, into three groups: juvenile-onset LN (JLN, diagnosed at ≤18 years), adult-onset LN (ALN, diagnosed at 18-50 years), and late-onset LN (LLN, diagnosed at >50 years) and compared demographic, clinical, histological, and laboratory findings...
June 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28444337/utility-of-a-repeat-renal-biopsy-in-lupus-nephritis-a-single-centre-experience
#16
Angela Pakozdi, Debasish Pyne, Michael Sheaff, Ravindra Rajakariar
Background.: The role of repeat renal biopsy in lupus nephritis (LN) to guide treatment or predict prognosis has been controversial. We assessed glomerular and tubulointerstitial histological characteristics of serial renal biopsies, correlations with clinical variables and the impact on subsequent management. Methods.: Out of a large single-centre cohort of 270 biopsy- proven LN patients, 66 (24%) had serial biopsies. LN classes based on glomerular pathology were defined according to the International Society of Nephrology/Renal Pathology Society 2003 classification, while tubulointerstitial pathologies were evaluated using the revised Austin's semi-quantitative scoring system...
April 22, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28435765/chronic-nephropathy-from-dietary-hyperoxaluria-sustained-improvement-of-renal-function-after-dietary-intervention
#17
Yijuan Sun, Bruce L Horowitz, Karen S Servilla, Joanna R Fair, Darlene Vigil, Kavitha Ganta, Larry Massie, Antonios H Tzamaloukas
A 56-year-old man with stable chronic kidney disease (CKD) for two years following a single episode of calcium oxalate urolithiasis developed progressive elevation of his serum creatinine concentration. Urinalysis revealed pyuria and white cell casts, a few red blood cells, minimal proteinuria, and no crystals. Urine culture was sterile. Gallium scintigraphy was consistent with interstitial nephritis. Proton pump inhibitor intake was discontinued, and a short course of oral corticosteroids was initiated. Percutaneous kidney biopsy, performed because of the continued deterioration of renal function to a minimum estimated glomerular filtration rate (eGFR) value of 15 mL/min per 1...
March 20, 2017: Curēus
https://www.readbyqxmd.com/read/28428258/deletion-of-inositol-requiring-enzyme-1%C3%AE-in-podocytes-disrupts-glomerular-capillary-integrity-and-autophagy
#18
Daniel Robert Kaufman, Joan Papillon, Louise Larose, Takao Iwawaki, Andrey V Cybulsky
Inositol-requiring enzyme-1α (IRE1α) is an endoplasmic reticulum (ER)-transmembrane endoribonuclease kinase that plays an essential function in extraembryonic tissues during normal development and is activated during ER stress. To address the functional role of IRE1α in glomerular podocytes, we produced podocyte-specific IRE1α-deletion mice. In male mice, deletion of IRE1α in podocytes resulted in albuminuria beginning at 5 mo of age and worsening with time. Electron microscopy revealed focal podocyte foot-process effacement in 9-mo-old male IRE1α-deletion mice, as well as microvillous transformation of podocyte plasma membranes...
June 15, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28420060/risk-factors-to-predict-the-development-of-chronic-kidney-disease-in-patients-with-lupus-nephritis
#19
D J Park, J H Kang, J W Lee, K E Lee, T J Kim, Y W Park, J S Lee, Y D Choi, S S Lee
Objectives We analyzed the clinical follow-up results of 88 lupus nephritis patients to find prognostic factors for the development of chronic kidney disease in ethnically homogeneous Korean patients with biopsy-proven lupus nephritis. Methods Sociodemographic, clinical, laboratory, and treatment-related data at the time of kidney biopsy and during follow-up were obtained. Renal biopsy specimens were reclassified according to the International Society of Pathology/Renal Pathology Society classification, separately, by two renal pathologists blinded to the previous classification...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28420058/clinico-pathological-features-of-repeat-renal-biopsies-in-patients-with-lupus-nephritis-at-groote-schuur-hospital-cape-town
#20
S Kajawo, F C J Botha, I G Okpechi
Background Repeat renal biopsies in patients with lupus nephritis are usually done to guide treatment or to establish disease chronicity. Their value is not clear from available literature. There are also no available data in Africa to guide clinicians. Methods This was a retrospective study of patients undergoing a repeat renal biopsy between January 2003 and December 2014 from a single centre in Cape Town, South Africa. Relevant demographic, clinical and histological records of patients with repeat renal biopsies were documented...
January 1, 2017: Lupus
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