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Renal fibrosis

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https://www.readbyqxmd.com/read/29220597/dietary-nacl-affects-bleomycin-induced-lung-fibrosis-in-mice
#1
Wensheng Chen, Darrell Pilling, Richard H Gomer
PURPOSE: High levels of NaCl in the diet are associated with both cardiac and renal fibrosis, but whether salt intake affects pulmonary fibrosis has not been examined. AIM OF THE STUDY: To test the hypothesis that salt intake might affect pulmonary fibrosis. MATERIALS AND METHODS: Mice were fed low, normal, or high salt diets for 2 weeks, and then treated with oropharyngeal bleomycin to induce pulmonary fibrosis, or oropharyngeal saline as a control...
December 8, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/29218427/the-role-of-nonautologous-and-autologous-adipose-derived-mesenchymal-stem-cell-in-acute-pyelonephritis
#2
Shabnam Sabetkish, Nastaran Sabetkish, Mahba Ataei Talebi, Shahnaz Halimi, Abdol-Mohammad Kajbafzadeh
We compared the therapeutic effects of autologous and nonautologous adipose-derived mesenchymal stem cell (ADMSC), in ameliorating the renal function in a rabbit model of acute pyelonephritis. The difference of perirenal and neck subcutaneous ADMSCs were also evaluated. Twenty female rabbits were apportioned to 5 groups. In group I (n = 4), the rabbits were injected direct inoculation of Escherichia coli (E. coli) into the right kidney. In group II (n = 4), autologous ADMSCs obtained from nape adipose tissue were injected into the subcapsular space 1 week after E...
December 7, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/29217491/intravoxel-incoherent-motion-diffusion-weighted-imaging-for-the-assessment-of-renal-fibrosis-of-chronic-kidney-disease-a-preliminary-study
#3
Wei Mao, Jianjun Zhou, Mengsu Zeng, Yuqin Ding, Lijie Qu, Caizhong Chen, Xiaoqiang Ding, Yaqiong Wang, Caixia Fu, Feng Gu
PURPOSE: To investigate the potential of Intravoxel incoherent motion diffusion-weighted imaging(IVIM-DWI) for the assessment of renal fibrosis in chronic kidney disease (CKD), using histopathology as a reference standard. METHODS: Eighty-five CKD patients and twenty healthy volunteers were recruited in this study. IVIM-DWI was performed in all of the participants, and all of the CKD patients underwent renal biopsy. The mean values of the true diffusion coefficient (D), pseudo diffusion coefficient (D*) and perfusion fraction (f) in the renal cortex and medulla were compared between the CKD patients and healthy volunteers...
December 4, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29216750/pde-camp-epac-c-ebp-%C3%AE-signaling-cascade-regulates-mitochondria-biogenesis-of-tubular-epithelial-cells-in-renal-fibrosis
#4
Hao Ding, Feng Bai, Hongdi Cao, Jing Xu, Li Fang, JiNing Wu, Qi Yuan, Yang Zhou, Qi Sun, WeiChun He, ChunSun Dai, Ke Zen, Lei Jiang, Junwei Yang
AIM: cAMP is a universal second messenger that plays an important role in intracellular signal transduction. cAMP is synthesized by adenylate cyclases (ACs) from adenosine triphosphate (ATP), and terminated by the phosphodiesterases (PDEs). In the present study, we investigated the role of the cAMP pathway in tubular epithelial cells mitochondrial biogenesis in the pathogenesis of renal fibrosis. RESULTS: We found that the cAMP levels were decreased in fibrotic kidney tissues, and replenishing cAMP could ameliorate tubular atrophy and extracellular matrix deposition...
December 7, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29215709/the-potential-role-of-aquaporin-1-on-aristolochic-acid-i-induced-epithelial-mesenchymal-transition-on-hk-2-cells
#5
Ji Li, Mincheng Zhang, Yong Mao, Yimao Li, Xiaoxia Zhang, Xuehan Peng, Feng Yu
Aristolochic acid I (AA-I), one of the main active components in Aristolochaia herbs, may induce aristolochic acid nephropathy (AAN). Renal interstitial fibrosis is one of the most typical features of AAN. To investigate the mechanism of Aristolochic acid I (AA-I) -induced renal epithelial-mesenchymal transition (EMT) and determine the role of aquaporin-1 (AQP1) in this process, we established an AA-I-induced EMT model in human proximal tubular epithelial cells (HK-2 cells). Morphological examination, MTT assay, and Western blot analysis were performed...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29212234/development-and-validation-of-a-prognostic-nomogram-for-iga-nephropathy
#6
Jian Liu, Shuwei Duan, Pu Chen, Guangyan Cai, Yong Wang, Li Tang, Shuwen Liu, Jianhui Zhou, Di Wu, Wanjun Shen, Xiangmei Chen, Jie Wu
IgA nephropathy (IgAN) shows strong heterogeneity between individuals. IgAN prognosis is associated with pathological lesions and clinical indicators. However, simple tools for evaluating the clinical prognosis remain inadequate. Our objective was to develop an intuitive estimation tool for predicting the IgAN prognosis. 349 patients with IgAN at The Chinese People's Liberation Army General Hospital were retrospectively analyzed from data between 2000 and 2006. A nomogram was developed using COX regression coefficients to predict decline of estimate Glomerular filtration rate (eGFR) ≥ 50% and end-stage renal disease (ESRD)...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29211853/nrf2-deficiency-upregulates-intrarenal-angiotensin-converting-enzyme-2-and-angiotensin-1-7-receptor-expression-and-attenuates-hypertension-and-nephropathy-in-diabetic-mice
#7
Shuiling Zhao, Anindya Ghosh, Chao-Sheng Lo, Isabelle Chenier, James W Scholey, Janos G Filep, Julie R Ingelfinger, Shao-Ling Zhang, John S D Chan
We investigated the role of nuclear factor erythroid 2-related factor 2 (Nrf2) in renin-angiotensin system (RAS) gene expression in renal proximal tubule cells (RPTCs) and in the development of systemic hypertension and kidney injury in diabetic Akita mice. We used adult male Akita Nrf2 knockout (KO) mice and Akita mice treated with trigonelline (an Nrf2 inhibitor) or oltipraz (an Nrf2 activator). We also examined immortalized rat RPTCs (IRPTCs) stably transfected with control plasmids or plasmids containing rat angiotensinogen (Agt), angiotensin-converting enzyme (ACE), angiotensin-converting enzyme-2 (Ace2) or angiotensin 1-7 receptor (MasR) gene promoters...
December 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/29209813/fsp1-specific-smad2-knockout-in-renal-tubular-endothelial-and-interstitial-cells-reduces-fibrosis-and-epithelial-to-mesenchymal-transition-in-murine-stz-induced-diabetic-nephropathy
#8
Ivonne Loeffler, Marita Liebisch, Stefanie Allert, Elke Kunisch, Raimund W Kinne, Gunter Wolf
Extracellular matrix deposition during tubulointerstitial fibrosis (TIF), a central pathological process in patients with diabetic nephropathy (DN), is driven by locally activated, disease-relevant myofibroblasts. Myofibroblasts can arise from various cellular sources, e.g., tubular epithelial cells via a process named epithelial-to-mesenchymal transition (EMT). Transforming growth factor beta 1 (TGF-β1) and its downstream Smad signaling play a critical role in both TIF and EMT. Whereas Smad3 is one central mediator, the role of the other prominently expressed variant, Smad2, is not completely understood...
December 6, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/29209018/novel-mechanism-of-the-pericyte-myofibroblast-transition-in-renal-interstitial-fibrosis-core-fucosylation-regulation
#9
Nan Wang, Yiyao Deng, Anqi Liu, Nan Shen, Weidong Wang, Xiangning Du, Qingzhu Tang, Shuangxin Li, Zach Odeh, Taihua Wu, Hongli Lin
Pericytes have been identified as a major source of myofibroblasts in renal interstitial fibrosis (RIF). The overactivation of several signaling pathways, mainly the TGF-β and PDGF pathways, initiates the pericyte-myofibroblast transition during RIF. Key receptors in these two pathways have been shown to be modified by fucosyltransferase 8 (FUT8), the enzyme that catalyzes core fucosylation. This study postulated that core fucosylation might play an important role in regulating the pericyte transition in RIF...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208969/association-of-kidney-fibrosis-with-urinary-peptides-a-path-towards-non-invasive-liquid-biopsies
#10
Pedro Magalhães, Martin Pejchinovski, Katerina Markoska, Miroslaw Banasik, Marian Klinger, Dominika Švec-Billá, Ivan Rychlík, Merita Rroji, Arianna Restivo, Giovambattista Capasso, Flaviu Bob, Adalbert Schiller, Alberto Ortiz, Maria Vanessa Perez-Gomez, Pablo Cannata, Maria Dolores Sanchez-Niño, Radomir Naumovic, Voin Brkovic, Momir Polenakovic, William Mullen, Antonia Vlahou, Petra Zürbig, Lars Pape, Franco Ferrario, Colette Denis, Goce Spasovski, Harald Mischak, Joost P Schanstra
Chronic kidney disease (CKD) is a prevalent cause of morbidity and mortality worldwide. A hallmark of CKD progression is renal fibrosis characterized by excessive accumulation of extracellular matrix (ECM) proteins. In this study, we aimed to investigate the correlation of the urinary proteome classifier CKD273 and individual urinary peptides with the degree of fibrosis. In total, 42 kidney biopsies and urine samples were examined. The percentage of fibrosis per total tissue area was assessed in Masson trichrome stained kidney tissues...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208752/effects-of-alanyl-glutamine-treatment-on-the-peritoneal-dialysis-effluent-proteome-reveal-pathomechanism-associated-molecular-signatures
#11
Rebecca Herzog, Michael Boehm, Markus Unterwurzacher, Anja Wagner, Katja Parapatics, Peter Majek, André C Mueller, Anton Lichtenauer, Keiryn L Bennett, Seth L Alper, Andreas Vychytil, Christoph Aufricht, Klaus Kratochwill
Peritoneal dialysis (PD) is a modality of renal replacement therapy in which the high volumes of available PD effluent (PDE) represents a rich source of biomarkers for monitoring disease and therapy. Although this information could help guide the management of PD patients, little is known about the potential of PDE to define pathomechanism-associated molecular signatures in PD.</p> <p>We therefore subjected PDE to a high-performance multiplex proteomic analysis after depletion of highly-abundant plasma proteins and enrichment of low-abundance proteins...
December 4, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29207359/telbivudine-attenuates-uuo-induced-renal-fibrosis-via-tgf-%C3%AE-smad-and-nf-%C3%AE%C2%BAb-signaling
#12
Jie Chen, Detian Li
Renal fibrosis yields decreased renal function and is a potent contributor to chronic kidney disease (CKD). Telbivudine (LdT) is an anti-hepatitis B virus (HBV) drug that has been found to steadily improve renal function, but the mechanism of drug action is unclear. One explanation is that LdT impacts inflammatory or fibrotic pathways. In this study, we investigated renal protection by LdT in a rat model of unilateral ureteral obstruction (UUO). UUO rats received oral gavage of LdT (1, 1.5, or 2g/kg/day) for 5weeks...
December 2, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29206090/utility-of-serial-protocol-biopsies-performed-after-1-year-in-predicting-long-term-kidney-allograft-function-according-to-histologic-phenotype
#13
Mareena S Zachariah, Alok K Dwivedi, Cindy S Yip, Shirley S Chang, Aijaz Gundroo, Rocco C Venuto, John Tomaszewski, Sunil K Patel, Rajeev Sharma
OBJECTIVES: Prognostic implications of early protocol biopsies have been studied; however, the value of late protocol biopsy in predicting graft outcome has not been well defined. Here, we compared the effects of early and late protocol biopsy histologic findings in stable kidney allografts and aimed to understand the significance of "borderline" rejection on allograft function. MATERIALS AND METHODS: We studied 261 biopsies from 159 renal transplant recipients who were on a steroid-free, calcineurin inhibitor and mycophenolate mofetil regimen and who received transplants between 2004 and 2012 with mean follow-up of 5 years...
December 5, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29205049/extracorporeal-shockwave-lithotripsy-could-lead-to-a-prolonged-increase-in-renal-fibrotic-process-of-up-to-2-years
#14
Chi-Fai Ng, Sylvia Luke, Chi-Hang Yee, Steven Ch Leung, Jeremy Y C Teoh, John Yuen
INTRODUCTION AND OBJECTIVE: This prospective study aimed to evaluate the effect of ramping and pause protocols on renal fibrosis, blood pressure control and renal function in patients receiving extracorporeal shockwave lithotripsy (SWL). METHODS: This study prospectively recruited 320 patients with solitary radiopaque renal stones <15 mm in size. Patients were randomized to receive one of four shockwave protocols: (1) standard protocol (no ramping or pause); (2) ramping protocol alone; (3) ramping and pause protocols or (4) pause protocol alone...
December 5, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29204797/prevention-of-renal-scarring-in-acute-pyelonephritis-by-probiotic-therapy-an-experimental-study
#15
Nastaran Sabetkish, Shabnam Sabetkish, Mohammad Javad Mohseni, Abdol-Mohammad Kajbafzadeh
We evaluated the protective effects of probiotic administration as a prophylaxis treatment and immediately after fever onset in increasing the immune response and decreasing the renal scarring in a rat model of acute pyelonephritis. Twenty-four rats were apportioned to three groups. In GI (n = 8), the rats were injected with direct inoculation of Escherichia coli into the right kidney. In GII (n = 8), the rats received a probiotic regimen 1 month before E. coli injection and the probiotic regimen was continued for the next 2 months...
December 4, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29204651/whole-exome-sequencing-in-adults-with-chronic-kidney-disease-a-pilot-study
#16
Sneh Lata, Maddalena Marasa, Yifu Li, David A Fasel, Emily Groopman, Vaidehi Jobanputra, Hila Rasouly, Adele Mitrotti, Rik Westland, Miguel Verbitsky, Jordan Nestor, Lindsey M Slater, Vivette D'Agati, Marcin Zaniew, Anna Materna-Kiryluk, Francesca Lugani, Gianluca Caridi, Luca Rampoldi, Aditya Mattoo, Chad A Newton, Maya K Rao, Jai Radhakrishnan, Wooin Ahn, Pietro A Canetta, Andrew S Bomback, Gerald B Appel, Corinne Antignac, Glen S Markowitz, Christine K Garcia, Krzysztof Kiryluk, Simone Sanna-Cherchi, Ali G Gharavi
Background: The utility of whole-exome sequencing (WES) for the diagnosis and management of adult-onset constitutional disorders has not been adequately studied. Genetic diagnostics may be advantageous in adults with chronic kidney disease (CKD), in whom the cause of kidney failure often remains unknown. Objective: To study the diagnostic utility of WES in a selected referral population of adults with CKD. Design: Observational cohort. Setting: A major academic medical center...
December 5, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/29204176/thymoquinone-protects-the-rat-kidneys-against-renal-fibrosis
#17
Rahimeh Bargi, Fereshteh Asgharzadeh, Farimah Beheshti, Mahmoud Hosseini, Mehdi Farzadnia, Majid Khazaei
Thymoquinone (TQ) is the main active ingredient of Nigella sativa seeds with various pharmacological effects. The aim of this study was to investigate the effect of TQ on renal fibrosis and permeability and oxidative stress status in lipopolysaccharide (LPS)-induced inflammation in male rats. Eighty male Wistar rats were divided into 5 groups as follow: control (received normal saline), LPS (1 mg/kg/day), and LPS+TQ (by doses of 2, 5 and 10 mg/kg/day). After three weeks, the biochemical parameters such as blood urea nitrogen (BUN) and creatinine in serum samples, oxidative stress markers including malondialdehyde (MDA), total thiol groups, superoxide dismutase (SOD) and catalase (CAT) activities in renal tissue homogenate and renal permeability (evaluated by Evan's blue dye method) were measured and renal fibrosis was evaluated, histologically using Masson's trichrome staining...
December 2017: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29203902/amniotic-fluid-stem-cell-derived-vesicles-protect-from-vegf-induced-endothelial-damage
#18
S Sedrakyan, V Villani, S Da Sacco, N Tripuraneni, S Porta, A Achena, M Lavarreda-Pearce, A Petrosyan, H Soloyan, R E De Filippo, B Bussolati, L Perin
Injection of amniotic fluid stem cells (AFSC) delays the course of progression of renal fibrosis in animals with Alport Syndrome, enhancing kidney function and improving survival. The mechanisms responsible for these protective outcomes are still largely unknown. Here, we showed that vascular endothelial growth factor (VEGF) signaling within the glomeruli of Alport mice is strongly elevated early on in the disease, causing glomerular endothelial cell damage. Intraventricular injected AFSC that homed within the glomeruli showed strong modulation of the VEGF activity, particularly in glomerular endothelial cells...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29199452/semaphorin-3a-and-netrin-1-predict-the-development-of-kidney-injury-in-children-with-congenital-hydronephrosis
#19
Xiaobing Li, Xianghua Liu, Ji Li, ELi Song, Ning Sun, Wen Liu, Tian Wang, Jinchang Yang, Zhenzhen Li
Congenital obstructive nephropathy is amongst the main causes of chronic renal failure in children. Early diagnosis and initiation of the treatment will delay progressive renal tubular atrophy and interstitial fibrosis with the loss of nephrons. The aim of this study was to evaluate whether urinary (u) semaphorin-3A (SEMA-3A) and Netrin-1 may be potential biomarkers in children with congenital hydronephrosis due to ureteropelvic junction obstruction (UPJO). The study consisted of 42 children with severe hydronephrosis who needed surgery and two control groups (Control One: 42 children with mild, non-obstructive hydronephrosis; Control Two: 44 healthy children)...
December 3, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29198660/utility-of-oxford-classification-in-post-transplant-immunoglobulin-a-nephropathy
#20
V Agrawal, A Singh, A Kaul, R Verma, M Jain, R Pandey
BACKGROUND: With increasing graft survival, post-transplant immunoglobulin A nephropathy (IgAN) has emerged as an important cause of chronic graft dysfunction in renal allograft recipients. We studied the clinico-pathological features of post-transplant IgAN regardless of the primary disease. The aim was to study the usefulness of the Oxford classification in predicting survival. METHODS: Indication graft biopsy specimens (n = 915) were received during a 10-year period; 27 biopsy specimens from 22 patients were diagnosed as IgAN...
December 2017: Transplantation Proceedings
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