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Glomerular nephritis

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https://www.readbyqxmd.com/read/28428258/deletion-of-inositol-requiring-enzyme-1%C3%AE-in-podocytes-disrupts-glomerular-capillary-integrity-and-autophagy
#1
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, which 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 months of age, and worsening with time. Electron microscopy revealed focal podocyte foot process effacement in 9-month old male IRE1α deletion mice, as well as microvillous transformation of podocyte plasma membranes...
April 20, 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
#2
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
#3
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
https://www.readbyqxmd.com/read/28419296/urinary-podocyte-and-tgf-%C3%AE-1-mrna-as-markers-for-disease-activity-and-progression-in-anti-glomerular-basement-membrane-nephritis
#4
Akihiro Fukuda, Akihiro Minakawa, Yuji Sato, Takashi Iwakiri, Shuji Iwatsubo, Hiroyuki Komatsu, Masao Kikuchi, Kazuo Kitamura, Roger C Wiggins, Shouichi Fujimoto
Background.: Podocyte depletion causes glomerulosclerosis, with persistent podocyte loss being a major factor driving disease progression. Urinary podocyte mRNA is potentially useful for monitoring disease progression in both animal models and in humans. To determine whether the same principles apply to crescentic glomerular injury, a rat model of anti-glomerular basement membrane (anti-GBM) nephritis was studied in parallel with a patient with anti-GBM nephritis. Methods...
April 17, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28407133/con-mesoamerican-nephropathy-is-the-problem-dehydration-or-rehydration
#5
Vito M Campese
In recent years, an increasing number of inhabitants of Central America have developed a form of chronic kidney disease, now named Mesoamerican nephropathy. This disease is characterized by minimal proteinuria, hyperuricemia, hypokalemia and reduced glomerular filtration rate. Histologically the kidneys manifest tubulointerstitial nephritis. The cause(s) of this disease remain unknown. Some have proposed that dehydration, in combination with hyperuricemia, may be primarily responsible for Mesoamerican nephropathy...
April 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28405610/btk-specific-inhibition-blocks-pathogenic-plasma-cell-signatures-and-myeloid-cell-associated-damage-in-ifn%C3%AE-driven-lupus-nephritis
#6
Arna Katewa, Yugang Wang, Jason A Hackney, Tao Huang, Eric Suto, Nandhini Ramamoorthi, Cary D Austin, Meire Bremer, Jacob Zhi Chen, James J Crawford, Kevin S Currie, Peter Blomgren, Jason DeVoss, Julie A DiPaolo, Jonathan Hau, Adam Johnson, Justin Lesch, Laura E DeForge, Zhonghua Lin, Marya Liimatta, Joseph W Lubach, Sami McVay, Zora Modrusan, Allen Nguyen, Chungkee Poon, Jianyong Wang, Lichuan Liu, Wyne P Lee, Harvey Wong, Wendy B Young, Michael J Townsend, Karin Reif
Systemic lupus erythematosus (SLE) is often associated with exaggerated B cell activation promoting plasma cell generation, immune-complex deposition in the kidney, renal infiltration of myeloid cells, and glomerular nephritis. Type-I IFNs amplify these autoimmune processes and promote severe disease. Bruton's tyrosine kinase (Btk) inhibitors are considered novel therapies for SLE. We describe the characterization of a highly selective reversible Btk inhibitor, G-744. G-744 is efficacious, and superior to blocking BAFF and Syk, in ameliorating severe lupus nephritis in both spontaneous and IFNα-accelerated lupus in NZB/W_F1 mice in therapeutic regimens...
April 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28396742/single-centre-experience-of-granulomatous-interstitial-nephritis-time-for-a-new-approach
#7
Ben Oliveira, Satish Jayawardene, Sapna Shah
Background: Differentiating between renal-limited sarcoidosis and tuberculosis (TB) infection as a cause of granulomatous interstitial nephritis (GIN) can be difficult. This series compares clinical features and response to treatment between the different underlying aetiologies in order to propose a management algorithm for GIN to assist with diagnosis and treatment. Methods: This retrospective study reports on all patients presenting with a histological diagnosis of GIN between 2000 and 2012 at our unit. Results: Twenty-one patients were identified, 57% were male and the mean age was 53 years...
April 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28396740/long-term-outcome-in-biopsy-proven-acute-interstitial-nephritis-treated-with-steroids
#8
Maria Prendecki, Anisha Tanna, Alan D Salama, Frederick W K Tam, Tom Cairns, David Taube, H Terence Cook, Damien Ashby, Neil D Duncan, Charles D Pusey
Background: There are no prospective randomized controlled trials describing the outcome of acute interstitial nephritis (AIN) treated with steroids, and retrospective studies are limited. Methods: We identified adult patients with a diagnosis of AIN without glomerular pathology over a 14-year period. Treated patients all received oral prednisolone and three also recieved IV methylprednisolone. Data were collected retrospectively on estimated glomerular filtration rate (eGFR), change in eGFR from time of biopsy, dependence on renal replacement therapy (RRT) and mortality, and outcomes were analysed according to the treatment prescribed...
April 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28391344/is-there-a-role-for-tnf%C3%AE-blockade-in-anca-associated-vasculitis-and-glomerulonephritis
#9
Stephen P McAdoo, Charles D Pusey
Tumour necrosis factor alpha (TNFα) is a cytokine that is pivotal in the inflammatory response. Blockade of TNFα has been shown to be effective in a number of human autoimmune diseases, including rheumatoid arthritis, raising the question of whether this approach may be effective in inflammatory kidney disease, such as ANCA-associated vasculitis (AAV). In AAV, there is considerable evidence for the role of TNFα in the pathophysiology of disease, including increased expression of TNFα mRNA in leucocytes and in renal tissue...
January 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28391337/managing-glomerular-disease-in-pregnancy
#10
Michelle A Hladunewich, Kate Bramham, Belinda Jim, Sharon Maynard
Glomerular disease, especially lupus nephritis, is common in young women of childbearing age. As such, practicing nephrologists must have adequate knowledge and expertise to prepare these women for pregnancy, to diagnose and manage the numerous pregnancy-associated complications that are common in this vulnerable patient population and finally to support these young women who often struggle to manage both their young children along with an often onerous chronic disease. In this article we will review the pre-pregnancy counseling these women should ideally receive to allow them to make an informed decision about proceeding with a pregnancy, an approach to the diagnosis of pregnancy-associated worsening of kidney function and proteinuria as well as pregnancy-safe management strategies, including immunosuppression, antihypertensive agents and other medications necessary for the management of nephrotic syndrome...
January 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28387859/altered-expression-of-signalling-lymphocyte-activation-molecule-receptors-in-t-cells-from-lupus-nephritis-patients-a-potential-biomarker-of-disease-activity
#11
Victoria Stratigou, Anne F Doyle, Francesco Carlucci, Lauren Stephens, Valentina Foschi, Marco Castelli, Nicola McKenna, H Terence Cook, Liz Lightstone, Thomas D Cairns, Matthew C Pickering, Marina Botto
Objectives.: The aim was to investigate whether the signalling lymphocyte activation molecule (SLAM) signalling pathways contribute to LN and whether SLAM receptors could be valuable biomarkers of disease activity. Methods.: Peripheral blood mononuclear cells from 30National Research Ethics Service SLE patients with biopsy-proven LN were analysed by flow cytometry. Clinical measures of disease activity were assessed. The expression of the SLAM family receptors on T-cell subpopulations [CD4, CD8 and double negative (DN) T cells] was measured and compared between lupus patients with active renal disease and those in remission...
April 5, 2017: Rheumatology
https://www.readbyqxmd.com/read/28382508/clinicopathological-characteristics-of-typical-and-atypical-anti-glomerular-basement-membrane-nephritis
#12
REVIEW
Vincenzo L'Imperio, Elena Ajello, Federico Pieruzzi, Manuela Nebuloni, Antonella Tosoni, Franco Ferrario, Fabio Pagni
Anti-glomerular basement membrane (GBM) antibody disease is a rare pathological condition that mainly involves renal and/or pulmonary parenchyma. It is characterized by the presence of circulating anti-GBM antibodies accompanied by a linear deposition of immunoglobulins (Ig) detected through immunofluorescence (IF) technique and typical signs and symptoms of organ dysfunction, such as rapidly progressive glomerulonephritis (RPGN) and pulmonary hemorrhage (PH). However, recently atypical forms of anti-GBM disease have been described and the presence of overlapping diseases contributed to make its diagnosis challenging...
April 5, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28355399/comparative-analysis-of-primary-and-secondary-glomerulopathies-in-the-northeast-of-brazil-data-from-the-pernambuco-registry-of-glomerulopathies-repeg
#13
Denise Maria do Nascimento Costa, Lucila Maria Valente, Pedro Alves da Cruz Gouveia, Filipe Wanick Sarinho, Gisele Vajgel Fernandes, Maria Alina Gomes de Mattos Cavalcante, Camila Barbosa Lyra de Oliveira, Carolina de Andrade Jordão de Vasconcelos, Emanuel Sávio Cavalcante Sarinho
INTRODUCTION: In Brazil, glomerulopathies are the third leading cause of chronic renal disease, accounting for 11% of dialysis patients. Studies on the prevalence of this disease in Northeastern Brazil are scarce. OBJECTIVE: The aim was to describe the findings of biopsies and to conduct a comparative analysis on the clinical laboratory presentation of primary glomerulopathies (PG) and secondary glomerulopathies (SG). METHODS: This was a retrospective study conducted at two public teaching hospitals in the state of Pernambuco, Northeastern Brazil...
March 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/28352031/vasculitis-and-vasculopathy-in-lupus-nephritis-clinical-variability-outcome-and-new-insight-into-treatment
#14
A Kaul, V Agrawal, D Bhaduaria, Vikas Agrawal, Narayan Prasad, Amit Gupta, R K Sharma
More than 50% of patients with systemic lupus erythematosus (SLE) have renal involvement at presentation or during their illness. Lupus nephritis (LN) encompasses several patterns of renal disease, including glomerular, tubulointerstitial, and vascular pathologies. The presence and significance of renal vascular lesions (VLs) are often overlooked. VLs in LN are not rare with an incidence of 10%-40% on renal biopsies from various studies and their presence is often labeled as poor prognostic markers. The current treatment protocol for LN is mainly based on the glomerular pathology, and no guidelines/consensus exists for treatment of LN with VLs...
March 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28352022/analysis-of-renal-diseases-detected-in-renal-biopsies-of-adult-patients-a-single-center-experience
#15
Salman Imtiaz, Murtaza F Drohlia, Kiran Nasir, Beena Salman, Aasim Ahmad
Renal biopsy is crucial while evaluating for the diagnosis of glomerular, vascular, tubulointerstitial, and genetic diseases. It gives vital information which helps in estimating the disease prognosis, progression, and management. This is the retrospective analysis of all adult patients aged above 18 years, who underwent percutaneous renal biopsy at The Kidney Center Post Graduate Training Institute, Karachi, over a duration of 18 years, i.e., January 1, 1996, to December 2013. Renal graft biopsies and those which were inadequate were excluded from analysis...
March 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28338190/the-role-of-mir-146a-in-modulating-traf6-induced-inflammation-during-lupus-nephritis
#16
C-Z Zheng, Y-B Shu, Y-L Luo, J Luo
OBJECTIVE: Lupus nephritis (LN) is a major complication of systemic lupus erythematosus (SLE). A previous study showed decreased expression level of microRNA (miR)-146a in LN patients, indicating its possible role in LN pathogenesis. PATIENTS AND METHODS: A total of 98 LN patients were recruited, for the collection of renal tissue samples during biopsy or surgery. Another cohort of 15 patients who had renal tumor resection was recruited as the control group, for the further comparison of expression levels of miR-146a, TRAF6 and p-p65 in tissues...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28334051/dissecting-the-relationships-of-igg-subclasses-and-complements-in-membranous-lupus-nephritis-and-idiopathic-membranous-nephropathy
#17
Woong Na, Kijong Yi, Young Soo Song, Moon Hyang Park
Membranous lupus nephritis (MLN) and idiopathic membranous nephropathy (IMN) are kidney diseases with similar morphology, but distinct etiologies, both producing glomeruli with immune deposits. Immunoglobulins and complements, the main components of the deposits, can be detected by immunofluorescence (IF) microscopy. Previous researches characterized the immune deposits only individually, but not the interactions between them. To study these relationships we analyzed an IF profile of IgG subclasses and complements (IgG1, IgG2, IgG3, IgG4, C3, C1q, and C4) in 53 and 95 cases of biopsy-confirmed MLNs and IMNs, respectively, mainly using information theory and Bayesian networks...
2017: PloS One
https://www.readbyqxmd.com/read/28325866/temporal-and-demographic-trends-in-glomerular-disease-epidemiology-in-the-southeastern-united-states-1986-2015
#18
Michelle M O'Shaughnessy, Susan L Hogan, Caroline J Poulton, Ronald J Falk, Harsharan K Singh, Volker Nickeleit, J Charles Jennette
BACKGROUND AND OBJECTIVES: Large-scale, contemporary studies exploring glomerular disease epidemiology in the United States are lacking. We aimed to determine 30-year temporal and demographic trends in renal biopsy glomerular disease diagnosis frequencies in the southeastern United States. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: In this cross-sectional, observational study, we identified all patients with a native kidney biopsy specimen showing one of 18 widely recognized glomerular disease diagnoses referred to the University of North Carolina Chapel Hill Division of Nephropathology between 1986 and 2015...
April 3, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28319945/glomerular-proteinuria-predicts-the-severity-of-acute-kidney-injury-in-puumala-hantavirus-induced-tubulointerstitial-nephritis
#19
Paula S Mantula, Tuula K Outinen, Jan P G Clement, Heini S A Huhtala, Ilkka H Pörsti, Antti Vaheri, Jukka T Mustonen, Satu M Mäkelä
BACKGROUND: Puumala virus (PUUV)-induced hemorrhagic fever with renal syndrome is common in many European countries. The typical renal histologic lesion is acute tubulointerstitial nephritis. We examined the type and kinetics of urine protein excretion and prognostic significance of proteinuria for the severity of acute kidney injury (AKI) in acute PUUV infection. METHODS: The amount of dipstick albuminuria at hospital admission was analyzed in 205 patients with acute PUUV infection...
March 21, 2017: Nephron
https://www.readbyqxmd.com/read/28293460/pauci-immune-lupus-nephritis-possibility-or-co-incidence
#20
Döndü Üsküdar Cansu, Gökhan Temiz, Mustafa F Açıkalın, Cengiz Korkmaz
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized with immune complex formation and renal involvement of lupus and may include several kinds of pathological conditions, but mostly, it is associated with immune complex-induced glomerular disease. Pauci-immune lupus nephritis is a very rare condition. We describe a 45-year-old female patient with pauci-immune crescentic necrotizing lupus nephritis and briefly discuss the possible mechanism and pathogenesis.
March 2017: European Journal of Rheumatology
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