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Renal fibrosis

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https://www.readbyqxmd.com/read/28731375/no-incidence-of-nephrogenic-systemic-fibrosis-after-gadobenate-dimeglumine-administration-in-patients-undergoing-dialysis-or-those-with-severe-chronic-kidney-disease
#1
Diego R Martin, Bobby Kalb, Ankush Mittal, Khalil Salman, Srinivasan Vedantham, Pardeep K Mittal
Purpose To determine the incidence of nephrogenic systemic fibrosis (NSF) in patients with severe chronic kidney disease (CKD) who underwent a uniform protocol for contrast material-enhanced magnetic resonance (MR) imaging with a gadolinium-based contrast agent (GBCA). Materials and Methods This retrospective, single-center, institutional review board-approved, HIPAA-compliant study included 3819 patients with severe (stage 4 or 5) CKD who underwent gadobenate dimeglumine-enhanced MR imaging as part of a preoperative evaluation for potential renal transplantation from January 2008 to February 2014...
July 21, 2017: Radiology
https://www.readbyqxmd.com/read/28728079/probucol-ameliorates-renal-injury-in-diabetic-nephropathy-by-inhibiting-the-expression-of-the-redox-enzyme-p66shc
#2
Shikun Yang, Li Zhao, Yachun Han, Yu Liu, Chao Chen, Ming Zhan, Xiaofen Xiong, Xuejing Zhu, Li Xiao, Chun Hu, Fuyou Liu, Zhiguang Zhou, Yashpal S Kanwar, Lin Sun
AIMS: Probucol is an anti-hyperlipidemic agent and a potent antioxidant drug that can delay progression of diabetic nephropathy (DN) and reverses renal oxidative stress in diabetic animal models; however, the mechanisms underlying these effects remain unclear. p66Shc is a newly recognized mediator of mitochondrial ROS production in renal cells under high-glucose (HG) ambience. We previously showed that p66Shc can serve as a biomarker for renal oxidative injury in DN patients and that p66Shc up-regulation is correlated with renal damage in vivo and in vitro...
July 4, 2017: Redox Biology
https://www.readbyqxmd.com/read/28727756/dysregulation-of-micrornas-and-renin-angiotensin-system-in-high-salt-diet-induced-cardiac-dysfunction-in-uninephrectomized-rats
#3
Venkateswara Rao Amara, Sunil Kumar Surapaneni, Kulbhushan Tikoo
Uninephrectomy is not associated with major adverse events in cardiovascular and renal functions of live kidney donors. The effect of high salt diet on the quality of life of live kidney donors is largely unknown. Hence in this study, we aimed to determine the effect of high salt diet on the alterations of renin-angiotensin system and microRNAs leading to CV and renal dysfunction in uninephrectomized rats. In order to mimic clinical scenario, uninephrectomized male Sprague Dawley rats were fed initially with normal pellet diet for 12 weeks and then for 20 weeks with high salt (10% w/w NaCl) diet...
2017: PloS One
https://www.readbyqxmd.com/read/28726774/interleukin-22-ameliorated-renal-injury-and-fibrosis-in-diabetic-nephropathy-through-inhibition-of-nlrp3-inflammasome-activation
#4
Shaofei Wang, Yubin Li, Jiajun Fan, Xuyao Zhang, Jingyun Luan, Qi Bian, Tao Ding, Yichen Wang, Ziyu Wang, Ping Song, Daxiang Cui, Xiaobin Mei, Dianwen Ju
Diabetic nephropathy (DN) is one of the most lethal complications of diabetes mellitus with metabolic disorders and chronic inflammation. Although the cytokine IL-22 was initially implicated in the pathogenesis of chronic inflammatory diseases, recent studies suggested that IL-22 could suppress inflammatory responses and alleviate tissue injury. Herein, we examined the role of IL-22 in DN. We found that serum levels of IL-22 were significantly downregulated in both patients and mice with DN. The expression of IL-22 was further decreased with the progression of DN, whereas IL-22 gene therapy significantly ameliorated renal injury and mesangial matrix expansion in mice with established nephropathy...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28724609/thy-1-fibroblast-subsets-in-the-human-peritoneum
#5
Edyta Kawka, Janusz Witowski, Maria Bartosova, Rusan Catar, Andras Rudolf, Aurelie Philippe, Rafal Rutkowski, Betti Schaefer, Claus Peter Schmitt, Duska Dragun, Achim Joerres
Fibrotic thickening of the peritoneum develops in patients receiving peritoneal dialysis (PD) for renal failure. For unknown reasons, however, in some patients it progresses to extensive fibrosis that compromises dialysis capacity of the peritoneum. It is increasingly clear that fibroblasts display large heterogeneity not only between but also within tissues. Differential surface expression of glycoprotein Thy-1 (CD90) has been shown to identify functionally distinct fibroblast subsets in several organs. Here, we isolated Thy-1+/- subsets of human peritoneal fibroblasts (HPFB) and analyzed them in terms of pro-fibrotic myofibroblast features...
July 19, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28724608/erbb4-deletion-accelerates-renal-fibrosis-following-renal-injury
#6
Fenghua Zeng, Tomoki Miyazawa, Lance A Kloepfer, Raymond C Harris
Tubulointerstitial fibrosis (TIF) is a prominent factor in the progression of chronic kidney disease (CKD) regardless of etiology. ErbB4 expression levels were inversely correlated to renal fibrosis in human fibrotic kidneys. In both unilateral ureteral obstruction (UUO) and ischemia reperfusion injury followed by uninephrectomy (IRI/UNx) mouse models, expression levels of ErbB4 were elevated in the early stage of renal injury. Using mice with global ErbB4 deletion except for transgenic rescue in cardiac tissue (ErbB4-/-ht+), we determined that UUO induced similar injury in proximal tubules compared to wild-type mice but more severe injury in distal nephrons...
July 19, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28724398/whole-genome-sequencing-identifies-a-novel-alms1-gene-mutation-in-two-chinese-siblings-with-alstr%C3%A3-m-syndrome
#7
Lin Yang, Zixiu Li, Mei Mei, Xiaomei Fan, Guodong Zhan, Huijun Wang, Guoying Huang, Mingbang Wang, Weidong Tian, Wenhao Zhou
BACKGROUND: Alström syndrome is a rare multi-systemic disorder with a broad spectrum of symptoms. This syndrome is characterized by childhood retinal degeneration; sensorineural hearing loss; obesity; type 2 diabetes mellitus; cardiomyopathy; systemic fibrosis; and pulmonary, hepatic, and renal failure. CASE PRESENTATION: A Chinese quartet family with two siblings predominantly affected by cone-rod dystrophy and short stature were recruited. The craniofacial dysmorphism and on-set age-of-cone-rod dystrophy in the proband showed a minor intrafamilial variability...
July 19, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28723681/inhibition-of-necroptosis-attenuates-kidney-inflammation-and-interstitial-fibrosis-induced-by-unilateral-ureteral-obstruction
#8
Xia Xiao, Chunyang Du, Zhe Yan, Yonghong Shi, Huijun Duan, Yunzhuo Ren
BACKGROUND: Inflammation plays a crucial role in renal interstitial fibrosis, the pathway of chronic kidney diseases. Necroptosis is a novel form of regulated cell death, which plays a potential role in inflammation and renal diseases. The small molecule necrostatin-1 (Nec-1) is a specific inhibitor of necroptosis. This study was aimed at determining the role of necroptosis, RIP1/RIP3/mixed lineage kinase domain-like (MLKL) signaling pathway, in renal inflammation and interstitial fibrosis related to primitive tubulointerstitial injury...
July 20, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28720778/visualization-of-kidney-fibrosis-in-diabetic-nephropathy-by-long-diffusion-tensor-imaging-mri-with-spin-echo-sequence
#9
Jun-Ya Kaimori, Yoshitaka Isaka, Masaki Hatanaka, Satoko Yamamoto, Naotsugu Ichimaru, Akihiko Fujikawa, Hiroshi Shibata, Akira Fujimori, Sosuke Miyoshi, Takashi Yokawa, Kagayaki Kuroda, Toshiki Moriyama, Hiromi Rakugi, Shiro Takahara
Renal fibrosis (RF) is an indicator for progression of chronic kidney disease (CKD). Although diabetic nephropathy (DN) is the leading cause of CKD and end-stage renal disease in Western populations, the ability of MRI to evaluate RF in DN patients has not been determined. As a first step to identify possible MRI methods for RF evaluation, we examined the use of diffusion tensor imaging (DTI) MRI to evaluate RF in a rat model of DN (SHR/NDmcr-cp(cp/cp): SHR/ND). The signal-to-noise ratio in DTI MRI was enhanced using a spin-echo sequence, and a special kidney attachment was developed for long-term stabilization...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720285/ultrasound-based-shear-wave-elastography-in-the-assessment-of-patients-with-diabetic-kidney-disease
#10
Flaviu Bob, Iulia Grosu, Ioan Sporea, Simona Bota, Alina Popescu, Alexandra Sima, Roxana Şirli, Ligia Petrica, Romulus Timar, Adalbert Schiller
In previous studies of acoustic radiation force impulse (ARFI) elastography, using Virtual Touch tissue quantification (VTQ) (Siemens Acuson S2000), it was reported that the measurement of renal shear wave speed in patients with chronic kidney disease (CKD) is not influenced exclusively by renal fibrosis. The purpose of the present study was to analyze the role of VTQ in patients with diabetic kidney disease, considered the main cause of CKD. The study group included 164 patients: 80 patients with diabetic kidney disease (DKD) and 84 without renal disease or diabetes mellitus...
July 15, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28717524/anasarca-fever-thrombocytopenia-organomegaly-and-multiorgan-failure-in-a-24-year-old-pregnant-woman
#11
Guillaume Morel, Joy Mootien, Philippe Guiot, Khaldoun Kuteifan
TAFRO syndrome is a distinct idiopathic multicentric Castleman disease characterized by the association of thrombocytopenia, anasarca, fever, reticulin fibrosis, and organomegaly. We report the first case occurring in a Caucasian pregnant woman. At 34 weeks of gestation, our patient presented with all clinical and biological symptoms compatible with a TAFRO syndrome. Tough quick cesarean section was performed as symptoms got worse with onset of multiorgan failure requiring mechanical ventilation for acute respiratory distress, continuous renal replacement, and vasopressors...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/28717059/pharmacological-effects-of-a-vitamin-k1-2-3-epoxide-reductase-vkor-inhibitor-3-acetyl-5-methyltetronic-acid-on-cisplatin-induced-fibrosis-in-rats
#12
Masashi Uchida, Tomoya Miyoshi, Yohei Miyamoto
Cisplatin (CDDP) is a chemotherapeutic agent that is widely used in the treatment of lymphomas and solid malignancies. However, its clinical usage is limited by its severe side effects in the kidneys. Glomerular and tubular injuries in the kidneys commonly progress to interstitial fibrosis and, ultimately, the end stage of renal failure. We previously reported that 3-acetyl-5-methyltetronic acid (AMT) had inhibitory effects on rat renal vitamin K1 2,3-epoxide reductase (VKOR) in vitro and also suppressed mesangial cell proliferation and, consequently, the formation of fibrosis via the vitamin K-dependent activation of the growth arrest-specific 6 (Gas6)/Axl pathway in anti-Thy-1 glomerulonephritis (Thy-1 GN) in rats...
July 16, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28715949/contrast-enhanced-ultrasound-for-assessing-renal-perfusion-impairment-and-predicting-acute-kidney-injury-to-chronic-kidney-disease-progression
#13
Wei Cao, Shuang Cui, Li Yang, Chunyi Wu, Jian Liu, Fang Yang, Youhua Liu, Jianping Bin, Fan Fan Hou
AIMS: Acute kidney injury (AKI) is increasingly recognized as a major risk factor leading to progression to chronic kidney disease (CKD). However, the diagnostic tools for predicting AKI to CKD progression are particularly lacking. Here, we tested the utility of contrast enhanced ultrasound (CEUS) for predicting progression to CKD after AKI by using both mild (20-minute) and severe (45-minute) bilateral renal ischemia/reperfusion injury (IRI) mice. RESULTS: Renal perfusion measured by CEUS reduced to 25%±7% and 14%±6% of the pre-ischemic levels in mild and severe AKI 1 hour after ischemia (P<0...
July 17, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28714020/potential-role-of-upregulated-microrna%C3%A2-146b-and-%C3%A2-21-in-renal-fibrosis
#14
Guangda Xin, Guangyu Zhou, Xiaofei Zhang, Wanning Wang
The aim of the present study was to identify candidate microRNAs (miRNAs) involved in the progression of renal fibrosis. Dataset GSE42716 of miRNAs extracted from kidneys from mice with unilateral ureteral obstruction (UUO), and mice without UUO was downloaded from the Gene Expression Omnibus database. The Limma package was used to identify differential expression between mice with and without UUO. Renal disease‑related miRNAs were predicted based on the miRWalk database. Thereafter, candidate miRNAs were screened by taking the intersection of differentially expressed miRNAs and predicted miRNAs, followed by screening of target genes using miRWalk and transcription factors using the TransmiR database...
July 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713267/epoxyeicosatrienoic-acid-analog-decreases-renal-fibrosis-by-reducing-epithelial-to-mesenchymal-transition
#15
Melissa Skibba, Md Abdul Hye Khan, Lauren L Kolb, Michael M Yeboah, John R Falck, Radhika Amaradhi, John D Imig
Renal fibrosis, which is a critical pathophysiological event in chronic kidney diseases, is associated with renal epithelial-to-mesenchymal transition (EMT). Epoxyeicosatrienoic acids (EETs) are Cyp epoxygenase arachidonic acid metabolites that demonstrate biological actions that result in kidney protection. Herein, we investigated the ability of 14,15-EET and its synthetic analog, EET-A, to reduce kidney fibrosis induced by unilateral ureter obstruction (UUO). C57/BL6 male mice underwent sham or UUO surgical procedures and were treated with 14,15-EET or EET-A in osmotic pump (i...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28710896/renal-allograft-histology-at-10-years-after-transplantation-in-the-tacrolimus-era-evidence-of-pervasive-chronic-injury
#16
Mark D Stegall, Lynn D Cornell, Walter D Park, Byron H Smith, Fernando G Cosio
Improving long-term renal allograft survival remains an important unmet need. To assess the extent of histologic injury at 10 years after transplantation in functioning grafts, we studied 575 consecutive adult solitary renal transplants performed between 2002 and 2005-77% from living donors and 92% maintained on tacrolimus-based immunosuppression. Ten-year graft survival was 59% and death-censored graft survival was 74%. Surveillance allograft biopsies were assessed at implantation, 5 years and 10 years from 145 patients that reached 10 years...
July 15, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28710113/trap1-ameliorates-renal-tubulointerstitial-fibrosis-in-mice-with-unilateral-ureteral-obstruction-by-protecting-renal-tubular-epithelial-cell-mitochondria
#17
Jun-Feng Chen, Qi-Shun Wu, Yu-Xian Xie, Bo-Lin Si, Ping-Ping Yang, Wen-Yan Wang, Qin Hua, Qing He
Mitochondrial dysfunction causes renal tubular epithelial cell injury and promotes cell apoptosis and renal tubulointerstitial fibrosis (TIF) progression. TNF receptor-associated protein 1 (TRAP1) is a molecular chaperone protein that is localized in mitochondria. It plays an important role in cell apoptosis; however, its functional mechanism in TIF remains unclear. In this study, we observed the effects of TRAP1 in renal tubular epithelial cell mitochondria in mice with unilateral ureteral obstruction and its function in cell apoptosis and TIF...
July 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28709936/effects-of-klotho-on-fibrosis-and-cancer-a-renal-focus-on-mechanisms-and-therapeutic-strategies
#18
Rik Mencke, Hannes Olauson, Jan-Luuk Hillebrands
Klotho is a membrane-bound protein predominantly expressed in the kidney, where it acts as a permissive co-receptor for Fibroblast Growth Factor 23. In its shed form, Klotho exerts anti-fibrotic effects in several tissues. Klotho-deficient mice spontaneously develop fibrosis and Klotho deficiency exacerbates the disease progression in fibrotic animal models. Furthermore, Klotho overexpression or supplementation protects against fibrosis in various models of renal and cardiac fibrotic disease. These effects are mediated at least partially by the direct inhibitory effects of soluble Klotho on TGFβ1 signaling, Wnt signaling, and FGF2 signaling...
July 11, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28709692/ampk-orchestrates-an-elaborate-cascade-protecting-tissue-from-fibrosis-and-aging
#19
REVIEW
Shuai Jiang, Tian Li, Zhi Yang, Wei Yi, Shouyin Di, Yang Sun, Dongjin Wang, Yang Yang
Fibrosis is a common process characterized by excessive extracellular matrix (ECM) accumulation after inflammatory injury, which is also a crucial cause of aging. The process of fibrosis is involved in the pathogenesis of most diseases of the heart, liver, kidney, lung, and other organs/tissues. However, there are no effective therapies for this pathological alteration. Annually, fibrosis represents a huge financial burden for the USA and the world. 5'-AMP-activated protein kinase (AMPK) is a pivotal energy sensor that alleviates or delays the process of fibrogenesis...
July 12, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28709131/tiron-ameliorates-oxidative-stress-and-inflammation-in-titanium-dioxide-nanoparticles-induced-nephrotoxicity-of-male-rats
#20
Ashraf Morgan, Mona K Galal, Hanan A Ogaly, Marwa A Ibrahim, Reham M Abd-Elsalam, Peter Noshy
Although the widespread use of titanium dioxide nanoparticles (TiO2 NPs), few studies were conducted on its hazard influence on human health. Tiron a synthetic vitamin E analog was proven to be a mitochondrial targeting antioxidant. The current investigation was performed to assess the efficacy of tiron against TiO2 NPs induced nephrotoxicity. Eighty adult male rats divided into four different groups were used: group I was the control, group II received TiO2 NPs (100mg\Kg BW), group III received TiO2 NPs plus tiron (470mg\kg BW), and group IV received tiron alone...
July 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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