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https://www.readbyqxmd.com/read/28052874/inhibition-of-hdac6-protects-against-rhabdomyolysis-induced-acute-kidney-injury
#1
Shi Yingfeng, Xu Liuqing, Tang Jinhua, Fang Lu, Ma Shuchen, Ma Xiaoyan, Nie Jing, Pi Xiaoling, Qiu Andong, Zhuang Shougang, Liu Na
Histone deacetylase 6 (HDAC6) inhibition has been reported to protect against ischemic stroke and prolong survival after sepsis in animal models. However, it remains unknown whether HDAC6 inhibition offers a renoprotective effect after acute kidney injury (AKI). In this study, we examined the therapeutic effect of tubastatin A (TA), a highly selective inhibitor of HDAC6, on AKI in a murine model of glycerol (GL) injection-induced rhabdomyolysis. Following GL injection, the mice developed severe acute tubular injury as indicated by renal dysfunction, expression of neutrophil gelatinase-associated lipocalin (NGAL), an injury marker of renal tubules and increase of TUNEL positive tubular cells...
January 4, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27990569/icariin-treated-human-umbilical-cord-mesenchymal-stem-cells-decrease-chronic-liver-injury-in-mice
#2
Huantian Cui, Zhen Liu, Li Wang, Yuhong Bian, Wen Li, Huifang Zhou, Xiaoqian Chu, Qingyun Zhao
Human umbilical cord mesenchymal stem cells (hUMSCs) have been shown to have multiple differentiation potentials. However, a key problem is that only a small number of hUMSCs can migrate to damaged tissue after transplantation. According to "The Theory of Kidney Essence" in Traditional Chinese Medicine, some traditional Chinese medicines used for tonifying the kidneys can be applied in promoting the differentiation and migration of stem cells in vivo. Our previous study demonstrated that icariin (ICA) could up-regulate the pluripotent genes of hUMSCs in vitro and induce cell migration in mice in an acute kidney injury model in vivo...
December 18, 2016: Cytotechnology
https://www.readbyqxmd.com/read/27975097/an-injectable-collagen-poly-%C3%AE-glutamic-acid-hydrogel-as-a-scaffold-of-stem-cells-and-%C3%AE-lipoic-acid-for-enhanced-protection-against-renal-dysfunction
#3
Sun-Hee Cho, Jung-Ran Noh, Mi Young Cho, Min-Jeong Go, Yong-Hoon Kim, Eun Sung Kang, Yong Ho Kim, Chul-Ho Lee, Yong Taik Lim
Mesenchymal stem cells (MSCs) can ameliorate renal injury and accelerate repair of acute kidney injury. Herein, we developed a collagen/poly(γ-glutamic acid) (γ-PGA) hydrogel as an injectable scaffold for the delivery of mouse MSCs (mMSCs) and anti-oxidant drugs into injured sites. By the introduction of γ-PGA into conventional collagen, the viscosity of collagen was reduced at ambient temperature for easy handling, while the elastic and viscous moduli of collagen were increased and a new porous structure was generated near body temperature...
December 15, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27929116/a-proteolytic-modification-of-aim-promotes-its-renal-excretion
#4
Tomoko Yamazaki, Ryoichi Sugisawa, Emiri Hiramoto, Ryosuke Takai, Ayaka Matsumoto, Yoshie Senda, Katsuhiko Nakashima, Peter S Nelson, Jared M Lucas, Andrew Morgan, Zhenghua Li, Ken-Ichi Yamamura, Satoko Arai, Toru Miyazaki
Apoptosis inhibitor of macrophage (AIM, encoded by cd5l) is a multi-functional circulating protein that has a beneficial role in the regulation of a broad range of diseases, some of which are ameliorated by AIM administration in mice. In blood, AIM is stabilized by association with IgM pentamers and maintains its high circulating levels. The mechanism regulating the excessive accumulation of blood AIM remains unknown, although it is important, since a constitutive increase in AIM levels promotes chronic inflammation...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27927651/dna-repair-in-ischemic-acute-kidney-injury
#5
Jeffrey David Pressly, Frank Park
Ischemia-reperfusion injury (IRI) is a common cause of acute kidney injury (AKI) leading to an induction of oxidative stress, cellular dysfunction and a loss of renal function. DNA damage, including oxidative base modifications and physical DNA strand breaks, is a consequence of renal IRI. Like many other organs in the body, a redundant and highly conserved set of endogenous repair pathways have evolved to selectively recognize the various types of cellular DNA damage and combat its negative effects on cell viability...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27884305/micrornas-in-extracellular-vesicles-protect-kidney-from%C3%A2-ischemic-injury-from-endothelial-to-tubular-epithelial
#6
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
#7
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
#8
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...
January 22, 2017: 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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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...
January 2017: Kidney International
https://www.readbyqxmd.com/read/27634446/stem-cell-mobilizers-novel-therapeutics-for-acute-kidney-injury
#16
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
#17
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
#18
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
#19
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
#20
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
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