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Kidney microrna

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https://www.readbyqxmd.com/read/28100783/dual-functional-roles-of-molecular-beacon-a-microrna-detector-and-inhibitor
#1
Wai Ming Li, Ching-Man Chan, Andrew L Miller, Chow H Lee
MicroRNAs are essential in many cellular processes. The ability to detect microRNAs is important for understanding its function and biogenesis. This study is aimed at using a molecular beacon to detect miR-430 in developing zebrafish embryos as a proof of principle. miR-430 is crucial for the clearance of maternal mRNA during maternal zygotic transition (MZT) in embryonic development. Despite its known function, the temporal and spatial expression of miR-430 remains unclear. We used various imaging techniques, including laser scanning confocal microscopy, spinning disk and lightsheet microscopy, to study the localization of miR-430 and any developmental defects possibly caused by the molecular beacon...
January 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28097825/signalling-pathways-involved-in-hypoxia-induced-renal-fibrosis
#2
REVIEW
Minna Liu, Xiaoxuan Ning, Rong Li, Zhen Yang, Xiaoxia Yang, Shiren Sun, Qi Qian
Renal fibrosis is the common pathological hallmark of progressive chronic kidney disease (CKD) with diverse aetiologies. Recent researches have highlighted the critical role of hypoxia during the development of renal fibrosis as a final common pathway in end-stage kidney disease (ESKD), which joints the scientist's attention recently to exploit the molecular mechanism underlying hypoxia-induced renal fibrogenesis. The scaring formation is a multilayered cellular response and involves the regulation of multiple hypoxia-inducible signalling pathways and complex interactive networks...
January 18, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28097824/mechanisms-of-metabolic-memory-and-renal-hypoxia-as-a-therapeutic-target-in-diabetic-kidney-disease
#3
REVIEW
Yosuke Hirakawa, Tetsuhiro Tanaka, Masaomi Nangaku
Diabetic kidney disease (DKD) is a worldwide public health problem. The definition of DKD is being under discussion. Although the term DKD was originally defined as "kidney disease specific to diabetes", DKD frequently means chronic kidney disease (CKD) with diabetes mellitus and includes not only classical diabetic nephropathy, but also kidney dysfunction due to nephrosclerosis and other causes. Metabolic memory plays a crucial role in the progression of various complications of diabetes, including DKD. The mechanisms of metabolic memory in DKD are supposed to include advanced glycation end products, DNA methylation, histone modifications, and non-coding RNA including microRNA...
January 17, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28094285/urinary-exosomes-contain-micrornas-capable-of-paracrine-modulation-of-tubular-transporters-in-kidney
#4
Tannia Gracia, Xiaonan Wang, Ya Su, Elizabeth E Norgett, Timothy L Williams, Pablo Moreno, Gos Micklem, Fiona E Karet Frankl
Exosomes derived from all nephron segments are present in human urine, where their functionality is incompletely understood. Most studies have focused on biomarker discovery rather than exosome function. Through sequencing we identified the miRNA repertoire of urinary exosomes from healthy volunteers; 276 mature miRNAs and 345 pre-miRNAs were identified (43%/7% of reads). Among the most abundant were members of the miR-10, miR-30 and let-7 families. Targets for the identified miRNAs were predicted using five different databases; genes encoding membrane transporters and their regulators were enriched, highlighting the possibility that these miRNAs could modulate key renal tubular functions in a paracrine manner...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089712/effect-of-heme-oxygenase-1-on-ochratoxin-a-induced-nephrotoxicity-in-mice
#5
Agnieszka Loboda, Anna Stachurska, Paulina Podkalicka, Mateusz Sobczak, Olga Mucha, Agnieszka Witalisz-Siepracka, Alicja Jozkowicz, Jozef Dulak
Heme oxygenase-1 (HO-1), a heme-degrading enzyme, is suggested to play an important role in kidney pathophysiology, mostly due to its anti-fibrotic, anti-apoptotic and anti-oxidant properties. One of the mycotoxin, ochratoxin A (OTA) was previously shown to affect HO-1 expression, however, the mechanisms of OTA-induced nephrotoxicity during HO-1 deficiency are unknown. We have shown that OTA regulates the number of pro-fibrotic, pro-inflammatory, anti-oxidative and pro-apoptotic factors in HO-1 dependent manner, as the lack of HO-1 accelerates whereas the induction of HO-1 expression by cobalt protoporphyrin (CoPP) attenuates nephrotoxic effect of OTA...
January 9, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28079125/establishment-of-a-integrative-multi-omics-expression-database-ckddb-in-the-context-of-chronic-kidney-disease-ckd
#6
Marco Fernandes, Holger Husi
Complex human traits such as chronic kidney disease (CKD) are a major health and financial burden in modern societies. Currently, the description of the CKD onset and progression at the molecular level is still not fully understood. Meanwhile, the prolific use of high-throughput omic technologies in disease biomarker discovery studies yielded a vast amount of disjointed data that cannot be easily collated. Therefore, we aimed to develop a molecule-centric database featuring CKD-related experiments from available literature publications...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077372/extracellular-microrna-signature-in-chronic-kidney-disease
#7
Jagdeesan Muralidharan, Ali Ramezani, Monica J Hubal, Susan Knoblach, Shashi Shrivastav, Sara Karandish, Richard Scott, Nirmal Maxwell, Savas Ozturk, Srinivasan Beddhu, Jeffrey B Kopp, Dominic S Raj
MicroRNAs (miRNAs) are noncoding RNAs that regulate post-transcriptional gene expression. In this study we characterized the circulating and urinary miRNA pattern associated with reduced glomerular filtration rate using Affymetrix GeneChip miR 4.0 in 28 patients with chronic kidney disease (CKD). Top miRNA discoveries from the human studies were validated in an Alb/TGF-β mouse model of CKD, and in rat renal proximal tubular cells (NRK52E) exposed to TGF-β1. Plasma and urinary levels of procollagen III N-terminal propeptide and collagen IV were elevated in patients with decreased estimated glomerular filtration rate (eGFR)...
January 11, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28076311/biomarkers-of-acute-kidney-injury-the-pathway-from-discovery-to-clinical-adoption
#8
Kianoush Kashani, Wisit Cheungpasitporn, Claudio Ronco
Acute kidney injury (AKI) is a common complication of critical illnesses and has a significant impact on outcomes, including mortality and morbidities. Unfortunately, apart from prophylactic measures, no effective treatment for this syndrome is known. Therefore, early recognition of AKI not only can provide better opportunities for preventive interventions, but also opens many gates for research and development of effective therapeutic options. Over the last few years, several new AKI biomarkers have been discovered and validated to improve early detection, differential diagnosis, and differentiation of patients into risk groups for progressive renal failure, need for renal replacement therapy (RRT), or death...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28074869/urinary-exosome-derived-micrornas-reflecting-the-changes-of-renal-function-and-histopathology-in-dogs
#9
Osamu Ichii, Hiroshi Ohta, Taro Horino, Teppei Nakamura, Marina Hosotani, Tatsuya Mizoguchi, Keitaro Morishita, Kensuke Nakamura, Yuki Hoshino, Satoshi Takagi, Noboru Sasaki, Mitsuyoshi Takiguchi, Ryo Sato, Kazuhisa Oyamada, Yasuhiro Kon
MicroRNAs act as post-transcriptional regulators, and urinary exosome (UExo)-derived microRNAs may be used as biomarkers. Herein, we screened for UExo-derived microRNAs reflecting kidney disease (KD) status in dogs. Examined dogs were divided into healthy kidney control (HC) and KD groups according to renal dysfunction. We confirmed the appearance of UExo having irregular globe-shapes in a dog by immunoblot detection of the exosome markers, TSG101 and CD9. Based on our previous data using KD model mice and the data obtained herein by next generation sequencing of UExo-derived microRNAs in dogs, miR-26a, miR-146a, miR-486, miR-21a, and miR-10a/b were selected as candidate microRNAs...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28056546/urinary-microrna-30c-5p-and-microrna-192-5p-as-potential-biomarkers-of-ischemia-reperfusion-induced-kidney-injury
#10
Yan-Fang Zou, Dan Wen, Qian Zhao, Ping-Yan Shen, Hao Shi, Qiang Zhao, Yong-Xi Chen, Wen Zhang
Early detection of acute kidney injury is difficult due to lack of known biomarkers; previous studies have tried to identify new biomarkers for detecting acute kidney injury at an early stage. MicroRNA, a 21-23 nucleotide noncoding RNA molecule, has emerged as a desirable marker in the diagnosis and prognosis of various diseases. This study aims to identify the expression profile of microRNA in ischemia-reperfusion-induced kidney injury and determine the possibility of using the candidate microRNA as biomarker for the detection of I/R-induced kidney injury...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28053239/microrna-378-reduces-mesangial-hypertrophy-and-kidney-tubular-fibrosis-via-mapk-signaling
#11
Bo Wang, Kevin Yao, Andrea F Wise, Ricky Lau, Hsin-Hui Shen, Greg H Tesch, Sharon D Ricardo
AIMS: To determine the regulatory role of a novel miRNA, miR-378, in the development of fibrosis through repression of the MAPK1 (ERK2) pathway. METHODS: miR-378 and fibrotic gene expression was examined in streptozotocin (STZ)-induced diabetic mice at 18 weeks or in unilateral ureteral obstruction (UUO) mice at 7 days. miR-378 transfection of proximal tubular epithelial cells, NRK52E, and mesangial cells was assessed with/without endogenous miR-378 knockdown using the locked nucleic acid (LNA) inhibitor...
January 4, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28035621/implications-of-dynamic-changes-in-mir-192-expression-in-ischemic-acute-kidney-injury
#12
Lulu Zhang, Yuan Xu, Song Xue, Xudong Wang, Huili Dai, Jiaqi Qian, Zhaohui Ni, Yucheng Yan
PURPOSE: Ischemia-reperfusion injury (IRI) is a major cause of acute kidney injury (AKI) with poor outcomes. While many important functions of microRNAs (miRNAs) have been identified in various diseases, few studies reported miRNAs in acute kidney IRI, especially the dynamic changes in their expression and their implications during disease progression. METHODS: The expression of miR-192, a specific kidney-enriched miRNA, was assessed in both the plasma and kidney of IRI rats at different time points after kidney injury and compared to renal function and kidney histological changes...
December 29, 2016: International Urology and Nephrology
https://www.readbyqxmd.com/read/27994555/physiological-adjustments-and-circulating-microrna-reprogramming-are-involved-in-early-acclimatization-to-high-altitude-in-chinese-han-males
#13
Bao Liu, He Huang, Shou-Xian Wang, Gang Wu, Gang Xu, Bing-Da Sun, Er-Long Zhang, Yu-Qi Gao
Background: Altitude acclimatization is a physiological process that restores oxygen delivery to the tissues and promotes oxygen use under high altitude hypoxia. High altitude sickness occurs in individuals without acclimatization. Unraveling the molecular underpinnings of altitude acclimatization could help understand the beneficial body responses to high altitude hypoxia as well as the altered biological events in un-acclimatized individuals. This study assessed physiological adjustments and circulating microRNA (cmiRNA) profiles in individuals exposed to high altitude, aiming to explore altitude acclimatization in humans...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27969569/biology-and-treatment-of-renal-tumours-in-childhood
#14
REVIEW
Jesper Brok, Taryn D Treger, Saskia L Gooskens, Marry M van den Heuvel-Eibrink, Kathy Pritchard-Jones
In Europe, almost 1000 children are diagnosed with a malignant renal tumour each year. The vast majority of cases are nephroblastoma, also known as Wilms' tumour (WT). Most children are treated according to Société Internationale d'Oncologie Pédiatrique Renal Tumour Study Group (SIOP-RTSG) protocols with pre-operative chemotherapy, surgery, and post-operative treatment dependent on stage and histology. Overall survival approaches 90%, but a subgroup of WT, with high-risk histology and/or relapsed disease, still have a much poorer prognosis...
October 28, 2016: European Journal of Cancer
https://www.readbyqxmd.com/read/27964927/long-noncoding-rna-malat1-regulates-renal-tubular-epithelial-pyroptosis-by-modulated-mir-23c-targeting-of-elavl1-in-diabetic-nephropathy
#15
Xue Li, Li Zeng, Chuanwu Cao, Chenhui Lu, Weishuai Lian, Jianhong Han, Xiaojun Zhang, Jing Zhang, Tao Tang, Maoquan Li
Diabetic nephropathy is a common kidney condition in patients with diabetes mellitus, which can result in renal failure. Pyroptosis, the process of pro-inflammatory programmed cell death, plays an important role in the pathogenesis of this disease. Long non-coding RNA MALAT1 has also been shown to be involved in diabetic nephropathy. Here, we investigated the role of MALAT1 and the microRNA miR-23c and its target gene ELAVL1 in renal tubular epithelial cells. Our data demonstrated that MALAT1 expression was substantially increased but miR-23c was decreased in streptozotocin-induced diabetic rats and in high-glucose-treated HK-2 cells...
December 10, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27959449/mir-204-regulates-epithelial-mesenchymal-transition-by-targeting-sp1-in-the-tubular-epithelial-cells-after-acute-kidney-injury-induced-by-ischemia-reperfusion
#16
Shun-Jie Chen, Ping Wu, Li-Jing Sun, Bo Zhou, Wei Niu, Shuang Liu, Fu-Jun Lin, Geng-Ru Jiang
Acute kidney injury (AKI) is a disease where kidney function is lost almost instantaneously; it can develop very rapidly over few hours to maximum of few days. Despite the advent of technology, the clinical management against this disease is very poor, and most of the time it is life-threatening. AKI has been actively regulated by extracellular matrix proteins (ECM), however, its underlying mechanism of regulation during AKI progression is very poorly understood. In this study, we explored the integrated network of mRNA and microRNAs (miRNAs) that maintains the progression of ECM after induction of AKI by lethal ischemia...
February 2017: Oncology Reports
https://www.readbyqxmd.com/read/27951581/micrornas-are-associated-with-uremic-toxicity-cardiovascular-calcification-and-disease
#17
Ziad A Massy, Valérie Metzinger-Le Meuth, Laurent Metzinger
BACKGROUND: Vascular calcification has been recognized to be a major risk factor in chronic kidney disease (CKD) and downstream cardiovascular complications. Micro-RNAs (miRNAs) are small noncoding RNAs comprising 20-25 nucleotides that regulate gene expression by inhibiting or degrading the target mRNA, and constitute potential new biomarkers and future therapeutic strategies. SUMMARY: We tested the relevance of several cardiovascular-specific miRNAs as new biomarkers for CKD, cardiovascular disease, and cardiovascular complications...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27936176/correction-role-of-microrna-1207-5p-and-its-host-gene-the-long-non-coding-rna-pvt1-as-mediators-of-extracellular-matrix-accumulation-in-the-kidney-implications-for-diabetic-nephropathy
#18
M Lucrecia Alvarez, Mahdieh Khosroheidari, Elena Eddy, Jeff Kiefer, Johanna K DiStefano
[This corrects the article DOI: 10.1371/journal.pone.0077468.].
2016: PloS One
https://www.readbyqxmd.com/read/27913625/absence-of-mir-146a-in-podocytes-increases-risk-of-diabetic-glomerulopathy-via-upregulation-of-erbb4-and-notch-1
#19
Ha Won Lee, Samia Q Khan, Shehryar Khaliqdina, Mehmet M Altintas, Florian Grahammer, Jimmy L Zhao, Kwihey Koh, Nicholas J Tardi, Mohd Hafeez Faridi, Terese Geraghty, David J Cimbaluk, Katalin Susztak, Luis F Moita, David Baltimore, Pierre-Louis Tharaux, Tobias B Huber, Matthias Kretzler, Markus Bitzer, Jochen Reiser, Vineet Gupta
Podocyte injury is an early event in diabetic kidney disease and is a hallmark of glomerulopathy. MicroRNA-146a (miR-146a) is highly expressed in many cell types under homeostatic conditions, and plays an important anti-inflammatory role in myeloid cells. However, its role in podocytes is unclear. Here, we show that miR-146a expression levels decrease in the glomeruli of patients with type 2 diabetes (T2D), which correlates with increased albuminuria and glomerular damage. MiR-146a levels are also significantly reduced in the glomeruli of albuminuric BTBR ob/ob mice, indicating its significant role in maintaining podocyte health...
December 2, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27900039/networks-analysis-of-genes-and-micrornas-in-human-wilms-tumors
#20
Jimin He, Xiaoxin Guo, Linlin Sun, Kuhao Wang, Haiying Yao
Wilms' tumor (WT) is a common kidney cancer. To date, the expression of genes [transcription factors (TFs), target genes and host genes] and microRNAs (miRNAs/miRs) in WTs has captured the attention of biologists, while the regulatory association between the genes and miRNAs remains unclear. In the present study, TFs, miRNAs, target genes and host genes were considered as key factors in the construction of three levels of regulatory networks, namely, the differentially-expressed network, the related network and the global network...
November 2016: Oncology Letters
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