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epigenetics in CKD

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https://www.readbyqxmd.com/read/29655605/physiology-and-pathophysiology-of-renal-erythropoietin-producing-cells
#1
REVIEW
Hong-Mou Shih, Chih-Jen Wu, Shuei-Liong Lin
Anemia is a common complication and contributes to increased morbidity and mortality in chronic kidney disease (CKD) patients. Whereas there has been a significant improvement of understanding the underlying mechanism of erythropoiesis, the treatment of renal anemia is still restricted to erythropoietin (EPO)-stimulating agents. The purpose of this article is to review the physiology of erythropoiesis, functional role of EPO and underlying molecular and cellular basis that regulate EPO production. Regulation of EPO production is at mRNA level...
April 11, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29566379/apabetalone-mediated-epigenetic-modulation-is-associated-with-favorable-kidney-function-and-alkaline-phosphatase-profile-in-patients-with-chronic-kidney-disease
#2
Ewelina Kulikowski, Christopher Halliday, Jan Johansson, Mike Sweeney, Kenneth Lebioda, Norman Wong, Mathias Haarhaus, Vincent Brandenburg, Srinivasan Beddhu, Marcello Tonelli, Carmine Zoccali, Kamyar Kalantar-Zadeh
BACKGROUND/AIMS: The association between serum alkaline phosphatase (ALP) with adverse cardiovascular outcomes, in Chronic Kidney Disease (CKD) patients has previously been reported and may be a result of increased vascular calcification and inflammation. Here we report, for the first time, the effects of pharmacologic epigenetic modulation on levels of ALP and kidney function via a novel oral small molecule BET inhibitor, apabetalone, in CKD patients. METHODS: A post-hoc analysis evaluated patients with estimated glomerular filtration rate (eGFR) <60 mL/min/1...
March 16, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29534238/targeting-epigenetic-dna-and-histone-modifications-to-treat-kidney-disease
#3
Miguel Fontecha-Barriuso, Diego Martin-Sanchez, Olga Ruiz-Andres, Jonay Poveda, Maria Dolores Sanchez-Niño, Lara Valiño-Rivas, Marta Ruiz-Ortega, Alberto Ortiz, Ana Belén Sanz
Epigenetics refers to heritable changes in gene expression patterns not caused by an altered nucleotide sequence, and includes non-coding RNAs and covalent modifications of DNA and histones. This review focuses on functional evidence for the involvement of DNA and histone epigenetic modifications in the pathogenesis of kidney disease and the potential therapeutic implications. There is evidence of activation of epigenetic regulatory mechanisms in acute kidney injury (AKI), chronic kidney disease (CKD) and the AKI-to-CKD transition of diverse aetiologies, including ischaemia-reperfusion injury, nephrotoxicity, ureteral obstruction, diabetes, glomerulonephritis and polycystic kidney disease...
March 9, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29513906/does-inflammation-affect-outcomes-in-dialysis-patients
#4
Kristen L Nowak, Michel Chonchol
Chronic, low-grade inflammation is a common comorbid condition in chronic kidney disease (CKD), and particularly in chronic dialysis patients. In this review, we consider the question of whether inflammation affects outcomes in dialysis patients. Levels of proinflammatory cytokines, as well as C-reactive protein, are elevated in chronic dialysis patients. Multiple factors likely contribute to chronic inflammatory activation in kidney disease patients including the uremic milieu, lifestyle and epigenetic influences, infectious and thrombotic events, the dialysis process, and dysbiosis...
March 7, 2018: Seminars in Dialysis
https://www.readbyqxmd.com/read/29486722/study-protocol-rationale-and-design-of-the-community-based-prospective-cohort-study-of-kidney-function-and-diabetes-in-rural-new-mexico-the-compass-study
#5
Antonin Jaros, Hafiz A Sroya, Venita K Wolfe, Vikas Ghai, Maria-Eleni Roumelioti, Kamran Shaffi, Kai Wang, Vernon Shane Pankratz, Mark L Unruh, Christos Argyropoulos
BACKGROUND: Rural areas in the state of New Mexico have been the "ground-zero" for the epidemic of diabetic Chronic Kidney Disease (CKD) in the United States. However, there is limited research about risk factors of diabetic CKD in this area and scarce data regarding the performance of emerging markers of renal filtration and epigenetic biomarkers of renal function and diabetes in this area with its unique ethnic/racial population. We designed the COMPASS study as a community-based program in rural New Mexico aiming to screen for CKD and to discover CKD-related translational biomarkers...
February 27, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29483369/maternal-obesity-increases-the-risk-of-metabolic-disease-and-impacts-renal-health-in-offspring
#6
Sarah Jean Glastras, Hui Chen, Carol A Pollock, Sonia Saad
Obesity, together with insulin resistance, promotes multiple metabolic abnormalities and is strongly associated with an increased risk of chronic disease including type 2 diabetes (T2D), hypertension, cardiovascular disease, non-alcoholic fatty liver disease and chronic kidney disease (CKD). The incidence of obesity continues to rise in astronomical proportions throughout the world and affects all different stages of the lifespan. Importantly, the proportion of women of reproductive age who are overweight or obese is increasing at an alarming rate and has potential ramifications for offspring health and disease risk...
February 26, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29393158/acute-kidney-injury-to-chronic-kidney-disease-transition
#7
Marco Fiorentino, Giuseppe Grandaliano, Loreto Gesualdo, Giuseppe Castellano
BACKGROUND: Acute kidney injury (AKI), even if followed by renal recovery, is a risk factor for the future development of chronic kidney disease (CKD) and end-stage renal disease (ESRD). In the previous years, novel insights in the pathophysiology of CKD progression suggested a causal link between AKI and CKD due to a maladaptive repair after severe and repeated injury. SUMMARY: Several pathological mechanisms have been proposed to contribute to the progression of AKI and transition to CKD/ESRD including hypoxia and microvascular rarefaction, alterations of renal resident cell phenotypes and functions, cell cycle arrest in the G2/M phase, persistent chronic inflammation, and development of interstitial fibrosis, mitochondrial fragmentation, epigenetic changes, activation of renin-angiotensin system (RAS), cell and tissue senescence...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29282868/epigenetic-changes-mediating-transition-to-chronic-kidney-disease-hypoxic-memory
#8
EDITORIAL
T Tanaka
No abstract text is available yet for this article.
April 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29197521/high-phosphate-induced-downregulation-of-ppar%C3%AE-contributes-to-ckd-associated-vascular-calcification
#9
Liang Liu, Yong Liu, Ying Zhang, Xianjin Bi, Ling Nie, Chi Liu, Jiachuan Xiong, Ting He, Xinlin Xu, Yanlin Yu, Ke Yang, Jun Gu, Yunjian Huang, Jingbo Zhang, Zhiren Zhang, Bo Zhang, Jinghong Zhao
Medial arterial calcification associated with hyperphosphatemia is a main cause of cardiovascular mortality in patients with chronic kidney disease (CKD), but the mechanisms underlying high phosphate-induced vascular calcification remain largely unknown. Here, we observed a significant decrease in the expression of peroxisome proliferator-activated receptor-gamma (PPARγ) in calcified arteries both in CKD patients and in a mouse model of CKD with hyperphosphatemia. In vitro, high phosphate treatment led to a decreased expression of PPARγ in mouse vascular smooth muscle cells (VMSCs), accompanied by apparent osteogenic differentiation and calcification...
January 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29195902/indoxyl-sulfate-accelerates-vascular-smooth-muscle-cell-calcification-via-microrna-29b-dependent-regulation-of-wnt-%C3%AE-catenin-signaling
#10
Han Zhang, Jing Chen, Ziyan Shen, Yulu Gu, Linghan Xu, Jiachang Hu, Xiaoyan Zhang, Xiaoqiang Ding
Vascular calcification (VC) is a very common phenomenon in patients with chronic kidney disease(CKD) and it increases the incidence of cardiovascular disease and leads to high mortality in CKD patients. It has been reported that some microRNAs (miRs) play roles in vascular calcification as an epigenetic regulator. Indoxyl sulfate (IS) is a protein-bound uremic toxin which has been proven as one of the major risk factors of cardiovascular disease in CKD. Here we investigated whether microRNA-29b (miR-29b) is involved in IS-induced vascular calcification...
March 1, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29097680/epigenome-wide-association-studies-identify-dna-methylation-associated-with-kidney-function
#11
Audrey Y Chu, Adrienne Tin, Pascal Schlosser, Yi-An Ko, Chengxiang Qiu, Chen Yao, Roby Joehanes, Morgan E Grams, Liming Liang, Caroline A Gluck, Chunyu Liu, Josef Coresh, Shih-Jen Hwang, Daniel Levy, Eric Boerwinkle, James S Pankow, Qiong Yang, Myriam Fornage, Caroline S Fox, Katalin Susztak, Anna Köttgen
Chronic kidney disease (CKD) is defined by reduced estimated glomerular filtration rate (eGFR). Previous genetic studies have implicated regulatory mechanisms contributing to CKD. Here we present epigenome-wide association studies of eGFR and CKD using whole-blood DNA methylation of 2264 ARIC Study and 2595 Framingham Heart Study participants to identify epigenetic signatures of kidney function. Of 19 CpG sites significantly associated (P < 1e-07) with eGFR/CKD and replicated, five also associate with renal fibrosis in biopsies from CKD patients and show concordant DNA methylation changes in kidney cortex...
November 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28969091/cellular-senescence-senescence-associated-secretory-phenotype-and-chronic-kidney-disease
#12
REVIEW
Wen-Juan Wang, Guang-Yan Cai, Xiang-Mei Chen
Chronic kidney disease (CKD) is increasingly being accepted as a type of renal ageing. The kidney undergoes age-related alterations in both structure and function. To date, a comprehensive analysis of cellular senescence and senescence-associated secretory phenotype (SASP) in CKD is lacking. Hence, this review mainly discusses the relationship between the two phenomena to show the striking similarities between SASP and CKD-associated secretory phenotype (CASP). It has been reported that replicative senescence, stress-induced premature ageing, and epigenetic abnormalities participate in the occurrence and development of CKD...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28910789/end-stage-renal-disease-inflammation-and-cardiovascular-outcomes
#13
Lu Dai, Edyta Golembiewska, Bengt Lindholm, Peter Stenvinkel
Despite marked improvements in renal replacement therapy during the last 30 years, the age-adjusted mortality rate in end-stage renal disease (ESRD) patients is still unacceptably high and comparable to that of many malignancies. Cardiovascular disease (CVD) remains the major cause of morbidity and mortality in ESRD patients. However, traditional risk factors can only partially explain the high premature cardiovascular burden in this population. Nontraditional risk factors, including persistent low-grade inflammation, are critical in the pathogenesis of atherosclerosis, vascular calcification, and other causes of CVD and may also contribute to protein-energy wasting and other complications in chronic kidney disease (CKD) patients...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28777303/novel-biomarkers-in-the-diagnosis-of-chronic-kidney-disease-and-the-prediction-of-its-outcome
#14
REVIEW
Jacek Rysz, Anna Gluba-Brzózka, Beata Franczyk, Zbigniew Jabłonowski, Aleksandra Ciałkowska-Rysz
In its early stages, symptoms of chronic kidney disease (CKD) are usually not apparent. Significant reduction of the kidney function is the first obvious sign of disease. If diagnosed early (stages 1 to 3), the progression of CKD can be altered and complications reduced. In stages 4 and 5 extensive kidney damage is observed, which usually results in end-stage renal failure. Currently, the diagnosis of CKD is made usually on the levels of blood urea and serum creatinine (sCr), however, sCr has been shown to be lacking high predictive value...
August 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28667065/current-epigenetic-aspects-the-clinical-kidney-researcher-should-embrace
#15
REVIEW
Anna Witasp, Amaryllis H Van Craenenbroeck, Paul G Shiels, Tomas J Ekström, Peter Stenvinkel, Louise Nordfors
Chronic kidney disease (CKD), affecting 10-12% of the world's adult population, is associated with a considerably elevated risk of serious comorbidities, in particular, premature vascular disease and death. Although a wide spectrum of causative factors has been identified and/or suggested, there is still a large gap of knowledge regarding the underlying mechanisms and the complexity of the CKD phenotype. Epigenetic factors, which calibrate the genetic code, are emerging as important players in the CKD-associated pathophysiology...
July 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28652544/ghrelin-treatment-improves-physical-decline-in-sarcopenia-model-mice-through-muscular-enhancement-and-mitochondrial-activation
#16
Masanori Tamaki, Kazutoshi Miyashita, Aika Hagiwara, Shu Wakino, Hiroyuki Inoue, Kentaro Fujii, Chikako Fujii, Sho Endo, Asuka Uto, Masanori Mitsuishi, Masaaki Sato, Toshio Doi, Hiroshi Itoh
Chronic kidney disease (CKD) impairs physical performance in humans, which leads to a risk of all-cause mortality. In our previous study, we demonstrated that a reduction in muscle mitochondria rather than muscle mass was a major cause of physical decline in 5/6 nephrectomized CKD model mice. Because ghrelin administration has been reported to enhance oxygen utilization in skeletal muscle, we examined the usefulness of ghrelin for a recovery of physical decline in 5/6 nephrectomized C57Bl/6 mice, focusing on the epigenetic modification of peroxisome proliferator activated receptor gamma coactivator-1α (PGC-1α), a master regulator of mitochondrial biogenesis...
2017: Endocrine Journal
https://www.readbyqxmd.com/read/28595179/epigenetic-changes-in-the-acute-kidney-injury-to-chronic-kidney-disease-transition
#17
Masaomi Nangaku, Yosuke Hirakawa, Imari Mimura, Reiko Inagi, Tetsuhiro Tanaka
Previously acute kidney injury (AKI) had been believed to be a transient event, and recovery from AKI had been thought to lead to no consequences. However, recent epidemiological studies have shown that even if there is complete recovery of the kidney function, AKI can eventually result in chronic kidney disease (CKD) and eventually in end-stage kidney disease in the long term. Transition of AKI to CKD is mediated by multiple mechanisms, including aberrant cell cycle arrest and hypoxia. Hypoxia of the kidney is induced by rarefaction of the peritubular capillaries after AKI episodes, and induces inflammation and fibrosis...
June 9, 2017: Nephron
https://www.readbyqxmd.com/read/28566479/targeted-exome-sequencing-identifies-pbx1-as-involved-in-monogenic-congenital-anomalies-of-the-kidney-and-urinary-tract
#18
Laurence Heidet, Vincent Morinière, Charline Henry, Lara De Tomasi, Madeline Louise Reilly, Camille Humbert, Olivier Alibeu, Cécile Fourrage, Christine Bole-Feysot, Patrick Nitschké, Frédéric Tores, Marc Bras, Marc Jeanpierre, Christine Pietrement, Dominique Gaillard, Marie Gonzales, Robert Novo, Elise Schaefer, Joëlle Roume, Jelena Martinovic, Valérie Malan, Rémi Salomon, Sophie Saunier, Corinne Antignac, Cécile Jeanpierre
Congenital anomalies of the kidney and urinary tract (CAKUT) occur in three to six of 1000 live births, represent about 20% of the prenatally detected anomalies, and constitute the main cause of CKD in children. These disorders are phenotypically and genetically heterogeneous. Monogenic causes of CAKUT in humans and mice have been identified. However, despite high-throughput sequencing studies, the cause of the disease remains unknown in most patients, and several studies support more complex inheritance and the role of environmental factors and/or epigenetics in the pathophysiology of CAKUT...
October 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28489601/cellular-senescence-senescence-associated-secretory-phenotype-and-chronic-kidney-disease
#19
REVIEW
Wen-Juan Wang, Guang-Yan Cai, Xiang-Mei Chen
Chronic kidney disease (CKD) is increasingly being accepted as a type of renal ageing. The kidney undergoes age-related alterations in both structure and function. To date, a comprehensive analysis of cellular senescence and senescence-associated secretory phenotype (SASP) in CKD is lacking. Hence, this review mainly discusses the relationship between the two phenomena to show the striking similarities between SASP and CKD-associated secretory phenotype (CASP). It has been reported that replicative senescence, stress-induced premature ageing, and epigenetic abnormalities participate in the occurrence and development of CKD...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28487070/noncoding-rna-and-epigenetic-gene-regulation-in-renal-diseases
#20
REVIEW
Satya K Kota, Savithri B Kota
Kidneys have a major role in normal physiology and metabolic homeostasis. Loss or impairment of kidney function is a common occurrence in several metabolic disorders, including hypertension and diabetes. Chronic kidney disease (CKD) affect nearly 10% of the population worldwide; ranks 18th in the list of causes of death; and contributes to a significant proportion of healthcare costs. The tissue repair and regenerative potential of kidneys are limited and they decline during aging. Recent studies have demonstrated a key role for epigenetic processes and players, such as DNA methylation, histone modifications, noncoding (nc)RNA, and so on, in both kidney development and disease...
July 2017: Drug Discovery Today
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