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https://www.readbyqxmd.com/read/27884305/micrornas-in-extracellular-vesicles-protect-kidney-from%C3%A2-ischemic-injury-from-endothelial-to-tubular-epithelial
#1
Man Jiang Livingston, Qingqing Wei
Extracellular vesicles from stem cells or progenitor cells are novel therapeutic systems for acute kidney injury. With exosomes (the smallest class of extracellular vesicles), Viñas et al. successfully rescued ischemic injured kidney. MicroRNA-486-5p, the crucial factor specifically delivered by exosomes to kidney, ameliorates the injury by targeting phosphatase and tensin homolog and inhibiting endothelial cell apoptosis. In this commentary, we discuss the potential underlying mechanism and the pivotal impact of their study on extracellular vesicle therapy...
December 2016: Kidney International
https://www.readbyqxmd.com/read/27876077/post-traumatic-acute-kidney-injury-a-cross-sectional-study-of-trauma-patients
#2
Wei-Hung Lai, Cheng-Shyuan Rau, Shao-Chun Wu, Yi-Chun Chen, Pao-Jen Kuo, Shiun-Yuan Hsu, Ching-Hua Hsieh, Hsiao-Yun Hsieh
BACKGROUND: The causes of post-traumatic acute kidney injury (AKI) are multifactorial, and shock associated with major trauma has been proposed to result in inadequate renal perfusion and subsequent AKI in trauma patients. This study aimed to investigate the true incidence and clinical presentation of post-traumatic AKI in hospitalized adult patients and its association with shock at a Level I trauma center. METHODS: Detailed data of 78 trauma patients with AKI and 14,504 patients without AKI between January 1, 2009 and December 31, 2014 were retrieved from the Trauma Registry System...
November 22, 2016: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/27871857/bmi-1-plays-a-critical-role-in-the-protection-from-acute-tubular-necrosis-by-mobilizing-renal-stem-progenitor-cells
#3
Xianhui Lv, Zhenzhen Yu, Chunfeng Xie, Xiuliang Dai, Qing Li, Dengshun Miao, Jianliang Jin
The regeneration of injured tubular cell occurs primarily from intrinsic renal stem/progenitor cells (RSCs) labeled with CD24 and CD133 after acute tubular necrosis (ATN). Bmi-1 plays a crucial role in regulating self-renewal, differentiation and aging of multiple adult stem cells and progenitor cells. Bmi-1 was rapidly elevated in the induction of adult kidney regeneration by renal injury. To determine whether Bmi-1 maintained mobilization of RSCs in the protection from ATN, glycerol-rhabdomyolysis-induced ATN were performed in wild type (WT) and Bmi-1-deficient (Bmi-1(-/-)) mice...
November 18, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27822039/carbon-monoxide-bound-hemoglobin-vesicles-ameliorate-multiorgan-injuries-induced-by-severe-acute-pancreatitis-in-mice-by-their-anti-inflammatory-and-antioxidant-properties
#4
Saori Nagao, Kazuaki Taguchi, Hiromi Sakai, Keishi Yamasaki, Hiroshi Watanabe, Masaki Otagiri, Toru Maruyama
Carbon monoxide (CO) has attracted attention as a possible therapeutic agent for affecting anti-inflammatory and antioxidant activities. Previously, CO-bound hemoglobin vesicle (CO-HbV) was developed as a nanotechnology-based CO donor, and its safety profile and therapeutic potential as a clinically applicable carrier of CO were examined in vitro and in vivo. In the present study, the therapeutic efficacy of CO-HbV against severe acute pancreatitis was examined with secondary distal organ-injured model mice that were fed with a choline-deficient ethionine-supplemented diet...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27820705/use-of-stress-tests-in-evaluating-kidney-disease
#5
Jay L Koyner, Lakhmir S Chawla
PURPOSE OF REVIEW: The kidney, like most other organs, has a reserve capacity that can be utilized in times of increased physiologic demand. The ability to quantify this renal reserve function across various parts of the nephron (glomerular and tubular) has been an area of increased investigation over the past several years. In this review, we discuss several techniques that have been developed to interrogate the maximal physiologic capacity of the injured kidney. RECENT FINDINGS: Although protein loading has been established as an ideal method to investigate glomerular filtration capacity in healthy kidneys, other methods such as the antagonism of the renin-angiotensin-aldosterone system have demonstrated promise as a method to determine underlying glomerular disease in those with acute kidney injury and other comorbidities (e...
January 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27799943/mesenchymal-stromal-cells-derived-extracellular-vesicles-ameliorate-acute-renal-ischemia-reperfusion-injury-by-inhibition-of-mitochondrial-fission-through-mir-30
#6
Di Gu, Xiangyu Zou, Guanqun Ju, Guangyuan Zhang, Erdun Bao, Yingjian Zhu
Background. The immoderation of mitochondrial fission is one of the main contributors in ischemia reperfusion injury (IRI) and mesenchymal stromal cells (MSCs) derived extracellular vesicles have been regarded as a potential therapy method. Here, we hypothesized that extracellular vesicles (EVs) derived from human Wharton Jelly mesenchymal stromal cells (hWJMSCs) ameliorate acute renal IRI by inhibiting mitochondrial fission through miR-30b/c/d. Methods. EVs isolated from the condition medium of MCS were injected intravenously in rats immediately after monolateral nephrectomy and renal pedicle occlusion for 45 minutes...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27760220/testing-danegaptide-effects-on-kidney-function-after-ischemia-reperfusion-injury-in-a-new-porcine-two-week-model
#7
Chris Amdisen, Anna K Keller, Rie Schultz Hansen, Rikke Nørregaard, Søren Palmelund Krag, Ulla Møldrup, Michael Pedersen, Bente Jespersen, Henrik Birn
INTRODUCTION: Ischemia/reperfusion injury (I/R-I) is a leading cause of acute kidney injury (AKI) and is associated with increased mortality. Danegaptide is a selective modifier of the gap junction protein connexion 43. It has cytoprotective as well as anti-arrhythmic properties and has been shown to reduce the size of myocardial infarct in pigs. The aim of this study was to investigate the ischemia-protective effect of Danegaptide in a porcine renal I/R-I model with two weeks follow up...
2016: PloS One
https://www.readbyqxmd.com/read/27734073/idarucizumab-administration-for-reversing-dabigatran-effect-in-an-acute-kidney-injured-patient-with-bleeding
#8
Hervé Quintard, Delphine Viard, Milou-Daniel Drici, Caroline Ruetsch, Charles Marc Samama, Carole Ichai
No abstract text is available yet for this article.
October 13, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27716570/ectopic-pregnancy-in-simultaneous-pancreas-kidney-transplantation-a-case-report
#9
Shinji Yamamoto, Maria Nelander
INTRODUCTION: We present a case report of ectopic pregnancy (EP) after simultaneous pancreas-kidney transplantation (SKPTx). PRESENTATION OF CASE: A 33-year-old female status post SKPTx suddenly got abdominal pain in the lower level. She had high human chorionic Gonadotropin test. Ultrasonography revealed that there was no fetus in the uterus but a dilated right fallopian tube, which strongly suggested ectopic pregnancy. An emergency operation was performed and a dilated right side uterine tube was found with adhesions to her transplant...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27692563/low-dose-hydralazine-prevents-fibrosis-in-a-murine-model-of-acute-kidney-injury-to-chronic-kidney-disease-progression
#10
Björn Tampe, Ulrike Steinle, Désirée Tampe, Julienne L Carstens, Peter Korsten, Elisabeth M Zeisberg, Gerhard A Müller, Raghu Kalluri, Michael Zeisberg
Acute kidney injury (AKI) and progressive chronic kidney disease (CKD) are intrinsically tied syndromes. In this regard, the acutely injured kidney often does not achieve its full regenerative capacity and AKI directly transitions into progressive CKD associated with tubulointerstitial fibrosis. Underlying mechanisms of such AKI-to-CKD progression are still incompletely understood and specific therapeutic interventions are still elusive. Because epigenetic modifications play a role in maintaining tissue fibrosis, we used a murine model of ischemia-reperfusion injury to determine whether aberrant promoter methylation of RASAL1 contributes causally to the switch between physiological regeneration and tubulointerstitial fibrogenesis, a hallmark of AKI-to-CKD progression...
September 27, 2016: Kidney International
https://www.readbyqxmd.com/read/27634446/stem-cell-mobilizers-novel-therapeutics-for-acute-kidney-injury
#11
Yue Xu, Qiang Zhang, Song Zeng, Zijiang Zhang, Xiaopeng Hu
In the past decade, rapid developments in stem cell studies have occurred. Researchers have confirmed the plasticity of bone marrow stem cells and the repair and regeneration effects of bone marrow hematopoietic stem cells on solid organs. These findings have suggested the possibility of using bone marrow to repair and regenerate injured organs. Recent studies on the effects of granulocyte colony-stimulating factor (G-CSF) and Plerixafor (AMD3100) on mouse acute kidney injury models have confirmed that the use of bone marrow may be an effective therapeutic measure...
September 9, 2016: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/27507004/the-adamts13-von-willebrand-factor-axis-is-involved-in-the-pathophysiology-of-kidney-ischemia-reperfusion-injury
#12
Myung-Gyu Kim, Sung Yoon Lim, Yoon Sook Ko, Hee Young Lee, Sang-Kyung Jo, Won Yong Cho
AIM: The ADAMTS13-von Willebrand factor (vWF) axis has been suggested to play a critical role in the pathophysiology of ischemia-reperfusion injury (IRI) in the heart or brain. Therefore, we aimed to investigate whether this axis was involved in the pathophysiology of IRI-induced acute kidney injury. METHODS: We performed renal IRI in ADAMTS13 knockout (KO) or wild type (WT) mice. Functional and histological kidney damage, and inflammation were compared and the effect of anti-vWF antibodies in ADAMTS13 KO mice was assessed...
August 10, 2016: Nephrology
https://www.readbyqxmd.com/read/27474473/biomarkers-in-acute-kidney-injury-pathophysiological-basis-and-clinical-performance
#13
E V Schrezenmeier, J Barasch, K Budde, T Westhoff, K M Schmidt-Ott
Various biomarkers of acute kidney injury (AKI) have been discovered and characterized in the recent past. These molecules can be detected in urine or blood and signify structural damage to the kidney. Clinically, they are proposed as adjunct diagnostics to serum creatinine and urinary output to improve the early detection, differential diagnosis and prognostic assessment of AKI. The most obvious requirements for a biomarker include its reflection of the underlying pathophysiology of the disease. Hence, a biomarker of AKI should derive from the injured kidney and reflect a molecular process intimately connected with tissue injury...
July 30, 2016: Acta Physiologica
https://www.readbyqxmd.com/read/27451286/stress-response-gene-nupr1-alleviates-cyclosporin-a-nephrotoxicity-in-vivo
#14
Pierre Galichon, Aurélien Bataille, Sophie Vandermeersch, Morgane Wetzstein, Yi-Chun Xu-Dubois, David Legouis, Alexandre Hertig, David Buob, Sandrine Placier, Naïke Bigé, Guillaume Lefevre, Chantal Jouanneau, Caroline Martin, Juan Lucio Iovanna, Eric Rondeau
Acute tubular damage is a major cause of renal failure, especially at the early phase of kidney transplant when ischemia-reperfusion injury and cyclosporin A toxicity may coexist. The mechanisms of the latter are largely unknown. Using an mRNA microarray on microdissected tubules from a rat model of cyclosporin A toxicity to describe the related epithelial-specific transcriptional signature in vivo, we found that cyclosporin A induces pathways dependent on the transcription factor ATF4 and identified nuclear protein transcriptional regulator 1 (Nupr1), a stress response gene induced by ATF4, as the gene most strongly upregulated...
July 22, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27446296/aldosterone-induces-nrk-52e-cell-apoptosis-in-acute-kidney-injury-via-rno-mir-203-hypermethylation-and-kim-1-upregulation
#15
Xiangcheng Xiao, Rong Tang, Xiao Zhou, Ling Peng, Pingping Yu
Acute kidney injury (AKI) is characterized by an acute reduction in kidney function as identified by an increase in serum creatinine levels and reduction in urine output. Kidney injury molecule-1 (Kim-1) is a hallmark of kidney diseases, since it is typically non-detectable in the non-injured kidney, but upregulated and excreted in the urine during AKI. Aldosterone (Aldo) is a mediator of the renin-angiotensin-Aldo system with a pivotal role in the regulation of salt and extracellular fluid metabolism. In the present study, mice subjected to renal ischemia/reperfusion-induced AKI were investigated...
August 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27441492/neonate-acute-kidney-injury-a-review
#16
Huandan Yang, Bingbing Zhu, Ruifeng Zhang
Acute kidney injury (AKI) is characterized by the abrupt inability of the kidneys to adequately excrete waste products and regulate fluid and electrolyte homeostasis appropriately. This results in an at least partially reversible increase in the blood concentration of creatinine and nitrogenous waste products. Moreover, medication eliminated via renal routes will accumulate that in turn result in a "second hit" to the already injured kidneys. Furthermore, fluid management and nutrition will be hampered by oliguria...
July 21, 2016: Minerva Pediatrica
https://www.readbyqxmd.com/read/27400799/microrna-146b-a-sensitive-indicator-of-mesenchymal-stem-cell-repair-of-acute-renal-injury
#17
Yuan Zhu, Jing Yu, Lei Yin, Ying Zhou, Zixuan Sun, Haoyuan Jia, Yang Tao, Wanzhu Liu, Bin Zhang, Jiao Zhang, Mei Wang, Xu Zhang, Yongmin Yan, Jianguo Xue, Hongbin Gu, Fei Mao, Wenrong Xu, Hui Qian
: : The role of mesenchymal stem cells (MSCs) in kidney injury repair has been studied widely. However, the underlying molecular mechanism remains unclear. We profiled the altered microRNAs in renal tissues from cisplatin-induced acute kidney injury (AKI) rats treated with or without rat bone marrow MSCs (rMSCs). We observed that microRNA-146b (miR-146b) expression was considerably upregulated in renal tissues from AKI rats compared with that in healthy rats, and the expression decreased following MSC treatment after cisplatin administration...
July 8, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27373799/acute-kidney-injury-following-cardiac-surgery-current-understanding-and-future-directions
#18
REVIEW
Jason B O'Neal, Andrew D Shaw, Frederic T Billings
Acute kidney injury (AKI) complicates recovery from cardiac surgery in up to 30 % of patients, injures and impairs the function of the brain, lungs, and gut, and places patients at a 5-fold increased risk of death during hospitalization. Renal ischemia, reperfusion, inflammation, hemolysis, oxidative stress, cholesterol emboli, and toxins contribute to the development and progression of AKI. Preventive strategies are limited, but current evidence supports maintenance of renal perfusion and intravascular volume while avoiding venous congestion, administration of balanced salt as opposed to high-chloride intravenous fluids, and the avoidance or limitation of cardiopulmonary bypass exposure...
July 4, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27339387/just-look-intravital-microscopy-as-the-best-means-to-study-kidney-cell-death-dynamics
#19
REVIEW
Ina Maria Schießl, Anna Hammer, Anne Riquier-Brison, Janos Peti-Peterdi
Kidney cell death plays a key role in the progression of life-threatening renal diseases, such as acute kidney injury and chronic kidney disease. Injured and dying epithelial and endothelial cells take part in complex communication with the innate immune system, which drives the progression of cell death and the decrease in renal function. To improve our understanding of kidney cell death dynamics and its impact on renal disease, a study approach is needed that facilitates the visualization of renal function and morphology in real time...
May 2016: Seminars in Nephrology
https://www.readbyqxmd.com/read/27270990/inhibition-of-microtubule-dynamics-impedes-repair-of-kidney-ischemia-reperfusion-injury-and-increases-fibrosis
#20
Sang Jun Han, Ji-Hyeon Kim, Jee In Kim, Kwon Moo Park
The microtubule cytoskeleton is composed of α-tubulin and β-tubulin heterodimers, and it serves to regulate the shape, motility, and division of a cell. Post-translational modifications including acetylation are closely associated with the functional aspects of the microtubule, involving in a number of pathological diseases. However, the role of microtubule acetylation in acute kidney injury (AKI) and progression of AKI to chronic kidney disease have yet to be understood. In this study, ischemia/reperfusion (I/R), a major cause of AKI, resulted in deacetylation of the microtubules with a decrease in α-tubulin acetyltransferase 1 (α-TAT1)...
2016: Scientific Reports
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