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tubulointerstitial disease

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https://www.readbyqxmd.com/read/29456207/medical-renal-disease-in-tumor-nephrectomies-the-silent-killer
#1
Rohit Tewari, Rajat Bajaj, Reena Bharadwaj
In tumor nephrectomy specimens, the evaluation of the normal renal parenchyma is often overlooked. A patient with both end-stage renal diseases (ESRDs) with a renal cell carcinoma is more likely to die of the ESRD rather than cancer. At the time of nephrectomy, a pathologist has a large amount of tissue available to him to comment upon the presence of disease in the nonneoplastic kidney. Hence, this study was undertaken with the idea of characterizing disease in the nonneoplastic kidney at the time of tumor nephrectomy...
January 2018: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/29455181/a-child-with-tubulointerstitial-nephritis-and-uveitis-tinu-syndrome
#2
Cátia Pereira, Patrícia Costa-Reis, José Esteves da Silva, Rosário Stone
Tubulointerstitial nephritis and uveitis syndrome is an uncommon disease, probably underdiagnosed in clinical practice. Its aetiology and pathogenesis remain unknown. This syndrome is defined by an association of uveitis and tubulointerstitial nephritis, with no evidence of systemic disease or infection that might cause both ocular and renal inflammation. Renal and ocular manifestations may not occur simultaneously, making the diagnosis even more challenging. Treatment includes topical and oral corticosteroids...
February 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29449811/hdac6-inhibition-promotes-transcription-factor-eb-activation-and-is-protective-in-experimental-kidney-disease
#3
Angela S Brijmohan, Sri N Batchu, Syamantak Majumder, Tamadher A Alghamdi, Karina Thieme, Sarah McGaugh, Youan Liu, Suzanne L Advani, Bridgit B Bowskill, M Golam Kabir, Laurette Geldenhuys, Ferhan S Siddiqi, Andrew Advani
To contend with the deleterious effects of accumulating misfolded protein aggregates or damaged organelles cells rely on a system of quality control processes, among them the autophagy-lysosome pathway. This pathway is itself controlled by a master regulator transcription factor termed transcription factor EB (TFEB). When TFEB localizes to the cell nucleus it promotes the expression of a number of genes involved in protein clearance. Here, we set out to determine (1) whether TFEB expression is altered in chronic kidney disease (CKD); (2) whether inhibition of the cytosolic deacetylase histone deacetylase 6 (HDAC6) affects TFEB acetylation and nuclear localization; and (3) whether HDAC6 inhibition, in turn, alters the natural history of experimental CKD...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29436780/autosomal-tubulointerstitial-kidney-disease-muc1-type-differential-proteomics-suggests-that-mutated-muc1-insc-affects-vesicular-transport-in-renal-epithelial-cells
#4
Simon Staubach, Andrea Wenzel, Bodo B Beck, Markus M Rinschen, Stefan Müller, Franz-Georg Hanisch
Autosomal dominant tubulointerstitial kidney disease associated to the MUC1 gene (ADTKD-MUC1; formerly MCKD1) belongs to a heterogenous group of rare hereditary kidney diseases that is prototypically caused by frameshift mutations in the MUC1 repeat domain. The mutant MUC1(insC) lacks the transmembrane domaine, exhibits aberant cellular topology and hence might gain a function during the pathological process. To get insight into potential pathomechanisms we performed differential proteomics of extracellular vesicles shed by renal epithelia into the urine of patients...
February 13, 2018: Proteomics
https://www.readbyqxmd.com/read/29436600/adenovirus-mediated-p311-ameliorates-renal-fibrosis-through-inhibition-of-epithelial-mesenchymal-transition-via-tgf-%C3%AE-1-smad-ilk-pathway-in-unilateral-ureteral-obstruction-rats
#5
Fang-Hua Qi, Ping-Ping Cai, Xiang Liu, Guo-Min Si
Epithelial-mesenchymal transition (EMT) is a critical step and key factor during renal fibrosis. Preventing renal tubular EMT is important for delaying the progression of chronic kidney disease (CKD). P311, a highly conserved 8-kDa intracellular protein, has been indicated as an important factor in myofibroblast transformation and in the progression of fibrosis. However, the related studies on P311 on renal fibrosis are limited and the mechanisms of P311 in the progression of renal tubulointerstitial fibrosis remain largely unknown...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29435202/podocyte-derived-microparticles-promote-proximal-tubule-fibrotic-signaling-via-p38-mapk-and-cd36
#6
Mercedes N Munkonda, Shareef Akbari, Chloe Landry, Suzy Sun, Fengxia Xiao, Maddison Turner, Chet E Holterman, Rania Nasrallah, Richard L Hébert, Christopher R J Kennedy, Dylan Burger
Tubulointerstitial fibrosis is a hallmark of advanced diabetic kidney disease that is linked to a decline in renal function, however the pathogenic mechanisms are poorly understood. Microparticles (MPs) are 100-1000 nm vesicles shed from injured cells that are implicated in intercellular signalling. Our lab recently observed the formation of MPs from podocytes and their release into urine of animal models of type 1 and 2 diabetes and in humans with type 1 diabetes. The purpose of the present study was to examine the role of podocyte MPs in tubular epithelial cell fibrotic responses...
2018: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/29430700/a-monoclonal-antibody-to-sv40-large-t-antigen-pab416-does-not-label-merkel-cell-carcinoma
#7
Daniel J Pelletier, Thomas W Czeczok, Andrew M Bellizzi
AIMS: Merkel cell carcinoma represents poorly differentiated neuroendocrine carcinoma of cutaneous origin. In most studies the vast majority of Merkel cell carcinomas are Merkel cell polyomavirus (MCPyV)-associated. SV40 polyomavirus immunohistochemistry is typically used in the diagnosis other polyomavirus-associated diseases including tubulointerstitial nephritis and progressive multifocal leukoencephalopathy, given cross-reactivity with BK and JC polyomaviruses. MCPyV-specific immunohistochemistry is commercially available, but if SV40 immunohistochemistry also cross-reacted with MCPyV that would be advantageous from a resource-utilization perspective...
February 11, 2018: Histopathology
https://www.readbyqxmd.com/read/29425694/renal-fibrosis-primacy-of-the-proximal-tubule
#8
REVIEW
Leslie S Gewin
Tubulointerstitial fibrosis (TIF) is the hallmark of chronic kidney disease and best predictor of renal survival. Many different cell types contribute to TIF progression including tubular epithelial cells, myofibroblasts, endothelia, and inflammatory cells. Previously, most of the attention has centered on myofibroblasts given their central importance in extracellular matrix production. However, emerging data focuses on how the response of the proximal tubule, a specialized epithelial segment vulnerable to injury, plays a central role in TIF progression...
February 6, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29424336/a-novel-umod-gene-mutation-associated-with-chronic-kidney-failure-at-a-young-age
#9
Nicolina Stefania Carucci, Gianluca Caridi, Francesca Lugani, Claudia Barone, Giovanni Conti
Autosomal dominant tubulointerstitial kidney disease (ADTKD) belongs to a group of renal hereditary disorders linked by common findings of tubulointerstitial disease and dominant inheritance. The renal clinical phenotype is characterized by chronic kidney disease, hyperuricemia, gout, and, inconstantly, renal cysts. Uromodulin (UMOD) gene mutations are related to the clinical phenotype of ADTKD-UMOD. We describe here a novel heterozygous mutation of UMOD (c.249C>G; p.Cys83Trp) in an affected 9-year-old boy with progressive renal impairment and hyperuricemia...
February 9, 2018: Clinical Nephrology
https://www.readbyqxmd.com/read/29422652/rage-aptamer-attenuates-deoxycorticosterone-acetate-salt-induced-renal-injury-in-mice
#10
Kensei Taguchi, Sho-Ichi Yamagishi, Miyuki Yokoro, Sakuya Ito, Goh Kodama, Yusuke Kaida, Yosuke Nakayama, Ryotaro Ando, Nana Yamada-Obara, Katsuhiko Asanuma, Takanori Matsui, Yuichiro Higashimoto, Craig R Brooks, Seiji Ueda, Seiya Okuda, Kei Fukami
The mineralocorticoid receptor (MR) and its downstream signaling play an important role in hypertensive renal injury. The interaction of advanced glycation end products (AGE) with their receptor (RAGE) is involved in the progression of renal disease. However, the pathological crosstalk between AGE-RAGE axis and MR system in kidney derangement remains unclear. We screened DNA-aptamer directed against RAGE (RAGE-apt) in vitro and examined its effects on renal injury in uninephrectomized deoxycorticosterone acetate (DOCA)/salt-induced hypertensive mice...
February 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29416205/upper-urinary-tract-urothelial-cancer-in-croatian-and-bosnian-endemic-nephropathy-regions
#11
Josip Samardzic, Sefik Hasukic
Objectives: Endemic nephropathy (EN) is a chronic tubulointerstitial renal disease associated with increased incidence of upper urinary tract urothelial cancer (UTUC) occurring predominantly in geographically limited areas in villages along big Danube river. Based on results obtained by the research it is confirmed that aristolochic acid is causative agent of endemic nephropathy (EN). Aim: The aim of this study was to determine characteristics of UTUC in two endemic areas and analyze trends in 5-year period...
December 2017: Medical Archives
https://www.readbyqxmd.com/read/29397387/losartan-improves-renal-function-and-pathology-in-obese-zsf-1-rats
#12
Zhi Su, Deborah Widomski, Arthur Nikkel, Laura Leys, Marian Namovic, Diana Donnelly-Roberts, Murali Gopalakrishnan, Steve McGaraughty
BACKGROUND: Losartan, a blocker of the angiotensin II type I receptor, is an important part of the standard of care for diabetic nephropathy (DN). The obese ZSF-1 rats display many aspects of the clinical features of human Type II DN. The current study was designed to examine the treatment effects of losartan on obese ZSF-1 rats and to evaluate the impact of the onset of dosing on efficacy. MATERIALS AND METHODS: The rats (7-10 weeks) underwent a right uninephrectomy (Unx) or sham surgery...
February 5, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29393109/hyperuricemia-and-progression-of-chronic-kidney-disease-role-of-phenotype-transition-of-renal-tubular-and-endothelial-cells
#13
Duk-Hee Kang
BACKGROUND: Although the clinical implication of hyperuricemia in chronic kidney disease has been an issue of active debate, recent data suggested a causative role of uric acid (UA) in the development of renal disease. Afferent arteriopathy, an induction of oxidative stress and an activation of local inflammation, have been regarded as the mechanisms of UA-induced renal disease, which contribute to glomerular hypertrophy and interstitial fibrosis via endothelial dysfunction. However, there have been rare studies on the direct effect of UA on phenotype transition of renal cells such as epithelial-to-mesenchymal transition (EMT) or endothelial-to-mesenchymal transition (EndoMT)...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29393088/the-pathophysiology-of-uric-acid-on-renal-diseases
#14
L Gabriela Sánchez-Lozada
BACKGROUND: Asymptomatic hyperuricemia was regarded as a marker and considered secondary to some pathological conditions such as hypertension. During the last 16 years, a vast amount of experimental work has shown that uric acid can cause intracellular alterations that lead to cardiovascular, renal, and metabolic disease. Epidemiological and clinical studies support this notion in specific populations. However, the clinical studies done so far are of such a small number that it is difficult to reach a consensus in regard to the benefit of treating asymptomatic hyperuricemia...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29389683/progression-of-chronic-kidney-disease-in-children-role-of-glomerular-hemodynamics-and-interstitial-fibrosis
#15
Eduardo A Oliveira, Robert H Mak
PURPOSE OF REVIEW: The aim of this review is to provide an overview of the current advances in the understanding of the mechanisms involved in the progression of chronic kidney disease (CKD) with emphasis on the role of glomerular hemodynamics and tubulointerstitial fibrosis. RECENT FINDINGS: Despite the varied causes of CKD, the progressive destruction of renal tissue processes through a complex common pathway. Current studies have highlighted both the role of the abnormal intrarenal hemodynamics and of the activation of fibrogenic biochemical pathway in the replacement of normal renal structure by extracellular matrix and ultimately by fibrosis...
January 31, 2018: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/29388171/combined-membranous-nephropathy-and-tubulointerstitial-nephritis-as-a-rare-renal-manifestation-of-igg4-related-disease-a-case-based-literature-review
#16
Wei Zhang, Jeffrey H Glaze, David Wynne
IgG4-related disease (IgG4-RD) is a newly recognized immune-mediated multisystemic disease characterized by a fibro-inflammatory condition with tissue infiltration of IgG4-positive plasma cells and often associated with elevated serum IgG4 levels. Typical renal involvement of IgG4-RD presents as tubulointerstitial nephritis (TIN), membranous or membranoproliferative nephropathy. We are presenting a case with combined IgG4 membranous nephropathy and TIN, as well as a literature review on pathophysiology, diagnosis and treatment of IgG4-RD...
February 1, 2018: CEN Case Reports
https://www.readbyqxmd.com/read/29383936/novel-ras-inhibitors-poricoic-acid-zg-and-poricoic-acid-zh-attenuate-renal-fibrosis-via-wnt-%C3%AE-catenin-pathway-and-targeted-phosphorylation-smad3-signaling
#17
Ming Wang, Dan-Qian Chen, Lin Chen, Hui Zhao, Dan Liu, Zhi-Hao Zhang, Nosratola D Vaziri, Yan Guo, Ying-Yong Zhao, Gang Cao
Renal fibrosis is a common endpoint of the progression of chronic kidney disease (CKD). Suppressing the development and progression of renal fibrosis is essential in the treatment of kidney disease. Our previous study demonstrated that the ethyl acetate extract of the surface layer of Poria cocos exhibited beneficial anti-tubulointerstitial fibrosis. In this study, we isolated new diterpene (PZF) and triterpenes (PZG and PZH) and examined their anti-fibrotic effect. TGF-β1 upregulated the collagen I protein expression in HK-2 cells and PZG and PZH treatment significantly inhibited the upregulated collagen I expression (TGF group 0...
January 31, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29381982/metabolic-acidosis-of-chronic-kidney-disease-and-subclinical-cardiovascular-disease-markers-friend-or-foe
#18
Cristina Căpuşă, Gabriel Ştefan, Simona Stancu, Mariana Lipan, Lilach Daniel Tsur, Gabriel Mircescu
The effect of chronic metabolic acidosis (MA) on cardiovascular disease (CVD) in the setting of chronic kidney disease (CKD) is largely unknown. Therefore, we aimed to study this relationship in nondialysis CKD patients.This cross-sectional, single-center study prospectively enrolled 95 clinically stable CKD patients (median age 61 (58, 65) years, 60% male, median eGFR 27 (22, 32) mL/min). Data on CKD etiology, CVD history, CVD traditional, and nontraditional risk factors were obtained. Also, markers of subclinical CVD were assessed: intima-media thickness (IMT), abdominal aortic calcifications (Kauppila score-AACs), cardio-ankle vascular index (CAVI), ankle-brachial index (ABI), ejection fraction, and interventricular septum thickness...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29380373/metformin-attenuates-folic-acid-induced-renal-fibrosis-in-mice
#19
Hao Yi, Chunling Huang, Ying Shi, Qinghua Cao, Yongli Zhao, Ling Zhang, Jason Chen, Carol A Pollock, Xin-Ming Chen
Progressive tubulointerstitial fibrosis has been recognized as a common pathological process that leads to the progression of all chronic kidney disease (CKD). Innovative strategies are needed to both prevent and treat CKD. Inflammatory and fibrotic signaling pathways play central roles in the progression of CKD regardless of aetiology. Hence, targeting inflammatory and fibrotic responses holds promise to limit renal fibrosis. Metformin has been the most prescribed glucose-lowering medicine worldwide, and its potential for many other therapeutic applications is also being explored intensively...
January 30, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29364168/renal-tubule-repair-is-wnt-%C3%AE-catenin-a-friend-or-foe
#20
REVIEW
Leslie S Gewin
Wnt/β-catenin signaling is extremely important for proper kidney development. This pathway is also upregulated in injured renal tubular epithelia, both in acute kidney injury and chronic kidney disease. The renal tubular epithelium is an important target of kidney injury, and its response (repair versus persistent injury) is critical for determining whether tubulointerstitial fibrosis, the hallmark of chronic kidney disease, develops. This review discusses how Wnt/β-catenin signaling in the injured tubular epithelia promotes either repair or fibrosis after kidney injury...
January 24, 2018: Genes
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