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Ingeborg M Bajema, Suzanne Wilhelmus, Charles E Alpers, Jan A Bruijn, Robert B Colvin, H Terence Cook, Vivette D D'Agati, Franco Ferrario, Mark Haas, J Charles Jennette, Kensuke Joh, Cynthia C Nast, Laure-Hélène Noël, Emilie C Rijnink, Ian S D Roberts, Surya V Seshan, Sanjeev Sethi, Agnes B Fogo
We present a consensus report pertaining to the improved clarity of definitions and classification of glomerular lesions in lupus nephritis that derived from a meeting of 18 members of an international nephropathology working group in Leiden, Netherlands, in 2016. Here we report detailed recommendations on issues for which we can propose adjustments based on existing evidence and current consensus opinion (phase 1). New definitions are provided for mesangial hypercellularity and for cellular, fibrocellular, and fibrous crescents...
February 16, 2018: Kidney International
Eduardo Vazquez Martul, Manuel Praga
No abstract text is available yet for this article.
December 7, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
Jun Chen, Jie Ren, Wings T Y Loo, Liang Hao, Min Wang
Diabetic nephropathy (DN) is a major complication of diabetes, the accumulation of extracellular matrix (ECM) is considered an indication of nephropathological changes. Lysyl oxidases (LOXs) are also associated with ECM. However, the majority of studies on LOXs have focused on their potential role in renal fibrogenesis and there has no examination of LOXs expression or the correlation with histopathological changes of DN, including glomerular basement membrane (GBM) thickening and glomerulosclerosis. In this study, the association between histological changes and LOXs was explored using a type 2 diabetes model of male Zucker diabetic fatty rats...
February 2018: Molecular Medicine Reports
Michelle M O'Shaughnessy, Susan L Hogan, Bawana D Thompson, Rosanna Coppo, Agnes B Fogo, J Charles Jennette
Background: Large-scale studies comparing glomerular disease frequencies across continents are lacking. Methods: We surveyed 29 nephropathology laboratories in four continents using a standardized data collection form. We obtained recent consecutive kidney biopsy diagnosis frequencies at each center and summary demographics for each diagnosis. This report focuses on glomerular disease frequencies by region and race/ethnicity. Results: Among 42 603 glomerular disease diagnoses reported (median age 47 years, 52% male, 57% white), from a total of 60 340 diagnoses, glomerular disease subtype frequencies differed considerably by continent...
July 2, 2017: Nephrology, Dialysis, Transplantation
Manel Gargouri, Houda Hamed, Amel Akrouti, Xavier Dauvergne, Christian Magné, Abdelfattah El Feki
Chronic hyperglycemia in diabetes causes free radicals overproduction, which contributes to the development of diabetic nephropathy. In modern medicine, no satisfactory therapy is available to cure diabetes mellitus. In that context, we investigated the potential therapeutic action of spirulina-enriched diet on renal impairment and oxidative stress in diabetic rats. Diabetes was induced by a single subcutaneous injection of alloxan (120 mg kg-1) in rats. Following alloxan treatment, male Wistar rats were fed daily with 5% spirulina-enriched diet or treated with insulin (0...
November 1, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Laura Barisoni, Jeffrey B Hodgin
PURPOSE OF REVIEW: In this review, we will discuss (i) how the recent advancements in digital technology and computational engineering are currently applied to nephropathology in the setting of clinical research, trials, and practice; (ii) the benefits of the new digital environment; (iii) how recognizing its challenges provides opportunities for transformation; and (iv) nephropathology in the upcoming era of kidney precision and predictive medicine. RECENT FINDINGS: Recent studies highlighted how new standardized protocols facilitate the harmonization of digital pathology database infrastructure and morphologic, morphometric, and computer-aided quantitative analyses...
November 2017: Current Opinion in Nephrology and Hypertension
L Nicholas Cossey, Christopher P Larsen, Helen Liapis
Collapsing glomerulopathy (CGP) is a pattern of kidney injury seen on renal biopsy with multiple associations and etiologies. It is most commonly described in African-Americans and others with recent African ancestry. The disease is rapidly progressive and often presents with abrupt onset of renal failure and nephrotic-range proteinuria. Since its description 30 years ago, this entity has transformed from a morphologic diagnosis typically seen in the setting of HIV infection to a complicated diagnosis with numerous etiologies, many of which are associated with underlying apolipoprotein L1 (APOL1)-risk variants or other genetic disorders...
August 2017: Clinical Kidney Journal
Yali Ma, Fang Chen, Suxia Yang, Yurui Duan, Zhiqiang Sun, Jun Shi
BACKGROUND Nephropathy, a chronic progressive kidney disease often characterized by glomeruli scarring and sclerosis, is a major complication of diabetes mellitus. Development of nephropathologic lesions has been shown to be associated with suppressed AKT phosphorylation and elevated level of apoptosis. Moreover, it has been established that the TRB3 gene is capable of inhibiting AKT phosphorylation and promoting apoptosis. MATERIAL AND METHODS In this study, we injected TRB3 siRNA into Wistar rats with type 1 diabetes, and monitored development of nephropathy in the rats...
June 10, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Laura Barisoni, Charlotte Gimpel, Renate Kain, Arvydas Laurinavicius, Gloria Bueno, Caihong Zeng, Zhihong Liu, Franz Schaefer, Matthias Kretzler, Lawrence B Holzman, Stephen M Hewitt
The introduction of digital pathology to nephrology provides a platform for the development of new methodologies and protocols for visual, morphometric and computer-aided assessment of renal biopsies. Application of digital imaging to pathology made substantial progress over the past decade; it is now in use for education, clinical trials and translational research. Digital pathology evolved as a valuable tool to generate comprehensive structural information in digital form, a key prerequisite for achieving precision pathology for computational biology...
April 2017: Clinical Kidney Journal
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
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...
2017: American Journal of Nephrology
Wael M Hamza, Hanan H Ali, Samia M Gabal, Sawsan A Fadda
The chronic dysfunction stands as the most common cause of renal allograft loss. During the nineties of the past century, this condition was referred to as chronic allograft nephropathy (CAN). Since 2005, CAN has been assigned by the eighth Banff schema to four main categories via histopathological and immunohistochemical findings including chronic antibodymediated rejection (CAMR), chronic T-cell-mediated rejection (CTMR), chronic cyclosporine toxicity (CNITOX), and "interstitial fibrosis (IF)/tubular atrophy; not otherwise specified (NOS)" to eliminate the term CAN...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
Rachel Cianciolo, Jessica Hokamp, Mary Nabity
Many recent advances in the evaluation of dogs with kidney disease have improved our diagnostic algorithms and have impacted our therapeutic strategies. Non-invasive techniques, such as urinary and serologic biomarker evaluation, can help a clinician diagnose and treat a patient that cannot undergo a renal biopsy for clinical or financial reasons. Some biomarkers might help localize the affected structure (glomerulus vs. tubule) and indicate the type or severity of injury present. Although more research is needed, studies indicate that some biomarkers (e...
September 2016: Veterinary Journal
Sabiha Anis
No abstract text is available yet for this article.
April 2016: Journal of Nephropathology
Vanesa Bijol, Youssef M K Farag, Sudhir Shah, John Feehally, Ajay K Singh
No abstract text is available yet for this article.
May 2016: Kidney International
Malgorzata Wągrowska-Danilewicz, Marian Danilewicz
This is the first report from Poland documenting biopsy-proven renal diseases in type 2 diabetes mellitus. We analyzed the data of 76 patients with type 2 diabetes who underwent renal biopsy and were diagnosed in the Department of Nephropathology, Medical University of Lodz. The patients were divided into the following three groups according to the histological diagnosis: group I - isolated non-diabetic renal disease (NDRD); group II - NDRD superimposed on underlying diabetic nephropathy (NDRD + DN); and group III - isolated diabetic nephropathy (DN)...
December 2015: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
Jessica Hemminger, Gyongyi Nadasdy, Anjali Satoskar, Sergey V Brodsky, Tibor Nadasdy
Immunofluorescence staining plays a vital role in nephropathology, but the panel of antibodies used has not changed for decades. Further classification of immunoglobulin (Ig)G-containing immune-type deposits with IgG subclass staining (IgG1, IgG2, IgG3, and IgG4) has been shown to be of diagnostic utility in glomerular diseases, but their value in the evaluation of renal biopsies has not been addressed systematically in large renal biopsy material. Between January 2007 and June 2014, using direct immunofluorescence, we stained every renal biopsy for the IgG subclasses if there was moderate to prominent glomerular IgG staining and/or IgG-predominant or IgG-codominant glomerular staining...
May 2016: American Journal of Surgical Pathology
Patrick J Gleeson, Itzchak Slotki, Jorge B Cannata-Andia, David W P Lappin
The Renal Section of the European Union of Medical Specialists is working towards harmonization and optimization of nephrology training across Europe and its Mediterranean borders. In addition to the need for harmonization of the heterogeneous time dedicated to training, it is necessary to ensure that the learning environment is of a sufficiently high standard to develop skilled specialists. Thus, there is a need to review the core educational infrastructure and resources that should be provided to trainees in order to be considered centres of excellence for nephrology training...
February 2016: Clinical Kidney Journal
Tak-Kuan Chow, Lai-Meng Looi, Phaik-Leng Cheah
BACKGROUND: In the past, lupus nephritis was histologically classified according to the 1995 WHO Classification. With the introduction of the 2003 ISN/RPS Classification, many nephropathology services converted to this new classification. This study was undertaken to compare both classification systems in a single centre practice. METHODS: 103 consecutive adequate renal biopsies initially reported as lupus nephritis in the Department of Pathology, Faculty of Medicine, University of Malaya were reassessed using the criteria of both the 1995 WHO Classification and the 2003 ISN/ RPS Classification...
December 2015: Malaysian Journal of Pathology
Isabelle Ayoub, Salem Almaani, Sergey Brodsky, Tibor Nadasdy, Jason Prosek, Lee Hebert, Brad Rovin
BACKGROUND: It is well-established from autopsy studies that gouty tophi can form in the kidney, particularly in the renal medulla. Recently hyperuricemia has been identified as a risk factor for progression of chronic kidney disease (CKD). Because each collecting duct serves more than 2,000 nephrons, we postulated that obstruction or disruption of collecting ducts by medullary tophi may explain, at least in part, the association between hyperuricemia and progressive CKD. This work was done to determine the prevalence of medullary tophi in CKD patients...
February 2016: Clinical Nephrology
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