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https://www.readbyqxmd.com/read/27896453/management-of-phosphorus-load-in-ckd-patients
#1
REVIEW
Yutaka Taketani, Fumihiko Koiwa, Keitaro Yokoyama
Disturbances in mineral and bone metabolism play a critical role in the pathogenesis of cardiovascular complications in patients with chronic kidney disease (CKD). The term "renal osteodystrophy" has recently been replaced with "CKD-mineral and bone disorder (CKD-MBD)", which includes vascular calcification as well as bone abnormalities. In Japan, proportions of the aged and long-term dialysis patients are increasing which makes management of vascular calcification and parathyroid function increasingly more important...
November 28, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27880955/long-term-angiotensin-ii-receptor-blockade-limits-hypertension-aortic-dysfunction-and-structural-remodeling-in-a-rat-model-of-chronic-kidney-disease
#2
Omar Z Ameer, Mark Butlin, Elena Kaschina, Manuela Sommerfeld, Alberto P Avolio, Jacqueline K Phillips
BACKGROUND/AIMS: Chronic kidney disease (CKD) is associated with large artery remodeling, endothelial dysfunction and calcification, with angiotensin II (Ang II) a known driver of these pathologies. We investigated long-term Ang II type 1 receptor inhibition with valsartan on aortic function and structure in the Lewis polycystic kidney (LPK) rat model of CKD. METHODS: Mixed sex LPK and Lewis control (total n = 28) treated (valsartan 60 mg/kg/day p.o. from 4 to 18 weeks) and vehicle groups were studied...
November 24, 2016: Journal of Vascular Research
https://www.readbyqxmd.com/read/27866993/micrornas-223-3p-and-93-5p-in-patients-with-chronic-kidney-disease-before-and-after-renal-transplantation
#3
M Ulbing, A H Kirsch, B Leber, S Lemesch, J Münzker, N Schweighofer, D Hofer, O Trummer, A R Rosenkranz, H Müller, K Eller, V Stadlbauer, B Obermayer-Pietsch
Chronic kidney disease (CKD) is associated with a multifactorial dysregulation of bone and vascular calcification and closely linked to increased cardiovascular mortality and concomitant bone disease. We aimed to investigate specific microRNA (miRNA) signatures in CKD patients to find indicators for vascular calcification and/or bone mineralization changes during CKD and after kidney transplantation (KT). A miRNA array was used to investigate serum miRNA profiles in CKD patients, then selected miRNAs were quantified in a validation cohort comprising 73 patients in CKD stages 3 to 5, 67 CKD patients after KT, and 36 healthy controls...
November 17, 2016: Bone
https://www.readbyqxmd.com/read/27847254/vascular-calcification-in-ckd-mbd-roles-for-phosphate-fgf23-and-klotho
#4
REVIEW
Shunsuke Yamada, Cecilia M Giachelli
Vascular calcification (VC) is highly prevalent in aging, diabetes mellitus, and chronic kidney disease (CKD). VC is a strong predictor of cardiovascular morbidity and mortality in the CKD population. Complex pathological mechanisms are involved in the development of VC, including osteochondrogenic differentiation and apoptosis of vascular smooth muscle cells, instability and release of extracellular vesicles loaded calcium and phosphate, and elastin degradation. Elevated serum phosphate is a late manifestation of CKD, and has been shown to accelerate mineral deposition in both the vessel wall and heart valves...
November 12, 2016: Bone
https://www.readbyqxmd.com/read/27818277/comparison-of-the-effects-of-novel-vitamin-d-receptor-analog-vs-105-and-paricalcitol-on-chronic-kidney-disease-mineral-bone-disorder-in-an-experimental-model-of-chronic-kidney-disease
#5
Hideki Fujii, Yuriko Yonekura, Kentaro Nakai, Keiji Kono, Shunsuke Goto, Shinichi Nishi
When using vitamin D, the most important clinical problems are hypercalcemia, hyperphosphatemia, and vascular calcification. VS-105 is a novel vitamin D receptor (VDR) analog. In the present study, we compared the effects of VS-105 and paricalcitol on chronic kidney disease-mineral bone disorder (CKD-MBD) in a CKD rat model. We used male Sprague-Dawley (SD) rats and performed 5/6 nephrectomy at 8-9 weeks. At 10 weeks, the rats were classified into five groups and administered vehicle, low-dose paricalcitol (LP, 0...
November 3, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27812542/activating-transcription-factor-4-promotes-mineralization-in-vascular-smooth-muscle-cells
#6
Masashi Masuda, Shinobu Miyazaki-Anzai, Audrey L Keenan, Yuji Shiozaki, Kayo Okamura, Wallace S Chick, Kristina Williams, Xiaoyun Zhao, Shaikh Mizanoor Rahman, Yin Tintut, Christopher M Adams, Makoto Miyazaki
Emerging evidence indicates that upregulation of the ER stress-induced pro-osteogenic transcription factor ATF4 plays an important role in vascular calcification, a common complication in patients with aging, diabetes, and chronic kidney disease (CKD). In this study, we demonstrated the pathophysiological role of ATF4 in vascular calcification using global Atf4 KO, smooth muscle cell-specific (SMC-specific) Atf4 KO, and transgenic (TG) mouse models. Reduced expression of ATF4 in global ATF4-haplodeficient and SMC-specific Atf4 KO mice reduced medial and atherosclerotic calcification under normal kidney and CKD conditions...
November 3, 2016: JCI Insight
https://www.readbyqxmd.com/read/27806914/micrornas-in-the-pathophysiology-of-ckd-mbd-biomarkers-and-innovative-drugs
#7
REVIEW
Valérie Metzinger-Le Meuth, Stéphane Burtey, Pierre Maitrias, Ziad A Massy, Laurent Metzinger
microRNAs comprise a novel class of endogenous small non-coding RNAs that have been shown to be implicated in both vascular damage and bone pathophysiology. Chronic kidney disease-mineral bone disorder (CKD-MBD) is characterized by vessel and bone damage secondary to progressive loss of kidney function. In this review, we will describe how several microRNAs have been implicated, in recent years, in cellular and animal models of CKD-MBD, and have been very recently shown to be deregulated in patients with CKD...
October 30, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27766038/indoxyl-sulfate-enhance-the-hypermethylation-of-klotho-and-promote-the-process-of-vascular-calcification-in-chronic-kidney-disease
#8
Jing Chen, Xiaoyan Zhang, Han Zhang, Tongqiang Liu, Hui Zhang, Jie Teng, Jun Ji, Xiaoqiang Ding
Chronic kidney disease (CKD) is a state of Klotho deficiency. The Klotho expression may be suppressed due to DNA hypermethylation in cancer cells so we have investigated the effects and possible mechanisms by which Klotho expression is regulated in human aortic smooth muscle cells (HASMCs). The vascular Klotho hypermethylation in radial arteries of patients with end-stage renal disease was described. Cultured HASMCs and 5/6-nephrectomized Sprague Dawley (SD) rats treated with indoxyl sulfate (IS) were used as in vitro and in vivo models, respectively...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27751997/vkorc1-gene-vitamin-k-epoxide-reductase-polymorphisms-are-associated-with-cardiovascular-disease-in-chronic-kidney-disease-patients-on-hemodialysis
#9
Noha A Osman, Nevine El-Abd, Mohamed Nasrallah
Vitamin K is necessary for the carboxylation of clotting factors and matrix Gla protein (MGP). Vitamin K epoxide reductase (VKOR) is the enzyme responsible for recirculation of Vitamin K increasing its tissue availability. Polymorphisms of VKOR may alter the function of MGP, thereby influencing vascular calcification. We conducted this study to investigate the relationship of VKORC1 gene single nucleotide polymorphisms (SNP's) to vascular calcification and clinically overt cardiovascular disease in chronic kidney disease (CKD) patients on hemodialysis (HD)...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27716569/iron-citrate-reduces-high-phosphate-induced-vascular-calcification-by-inhibiting-apoptosis
#10
Paola Ciceri, Francesca Elli, Paola Braidotti, Monica Falleni, Delfina Tosi, Gaetano Bulfamante, Geoffrey A Block, Mario Cozzolino
BACKGROUND AND AIMS: High phosphate-induced vascular calcification (VC) and iron deficiency-induced anemia are two major contributors of cardiovascular morbidity and mortality in patients affected by chronic kidney disease (CKD). Since phosphate (Pi) control and iron replacement are common therapies in CKD, the aim of our study was to investigate the effect of iron on high Pi-induced VC in rat vascular smooth muscle cells (VSMCs). METHODS: We treated VSMCs with 5 mM Pi and iron citrate (Fe(3+)) to evaluate Ca deposition by Alizarin Red destaining, DNA fragmentation by ELISA, gene expression by RT-PCR and protein expression by Western blot...
September 30, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/27716072/wnt-signaling-contributes-to-vascular-calcification-by-induction-of-matrix-metalloproteinases
#11
Christian Freise, Nadja Kretzschmar, Uwe Querfeld
BACKGROUND: Vascular calcifications such as arteriosclerosis, which is characterized by a calcificiation of the tunica media, represent major comorbidities e.g. in patients with chronic kidney disease (CKD). An essential step during the development of arteriosclerosis is the transdifferentiation/calcification of vascular smooth muscle cells (VSMC) resembling osteogenesis. The matrix metalloproteinases (MMP)-2 and -9 were shown to promote these VSMC calcifications and their inhibition is of therapeutic value to prevent arteriosclerosis in preclinical studies...
September 30, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27697413/plant-phosphates-phytate-and-pathological-calcifications-in-chronic-kidney-disease
#12
Juan Manuel Buades Fuster, Pilar Sanchís Cortés, Joan Perelló Bestard, Félix Grases Freixedas
Phytate, or myo-inositol 1,2,3,4,5,6-hexakis dihydrogen phosphate (InsP6), is a naturally occurring phosphorus compound that is present in many foods, mainly legumes, whole grains and nuts. Patients with chronic kidney disease (CKD) have cardiovascular disease mortality up to 30times higher than the general population. Vascular calcifications (VCs) directly contribute to overall morbidity and mortality, especially in CKD. In part, this high mortality is due to elevated levels of phosphorus in the blood. Therefore, control of dietary phosphorus is essential...
September 30, 2016: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/27695492/subclinical-cardiovascular-disease-markers-and-vitamin-d-deficiency-in-non-dialysis-chronic-kidney-disease-patients
#13
Cristina Căpuşa, Gabriel Stefan, Simona Stancu, Andrea Ilyes, Nicoleta Dorobanţu, Gabriel Mircescu
INTRODUCTION: Since 25-hydroxyvitamin D (25(OH)D) deficiency has been linked to an increased risk for cardiovascular disease (CVD) in the hemodialysis population, we aimed to determine the relationship between serum 25(OH)D level and markers of subclinical CVD in non-dialysis chronic kidney disease (CKD) patients. MATERIAL AND METHODS: This cross-sectional, single-center study prospectively enrolled 87 clinically stable CKD patients (median age: 61 (57-66) years, 51% male, median estimated glomerular filtration rate (eGFR): 32 (27-37) ml/min)...
October 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27668003/from-kidneys-govern-bones-to-chronic-kidney-disease-diabetes-mellitus-and-metabolic-bone-disorder-a-crosstalk-between-traditional-chinese-medicine-and-modern-science
#14
REVIEW
Xiao-Qin Wang, Xin-Rong Zou, Yuan Clare Zhang
Although traditional Chinese medicine (TCM) and Western medicine have evolved on distinct philosophical foundations and reasoning methods, an increasing body of scientific data has begun to reveal commonalities. Emerging scientific evidence has confirmed the validity and identified the molecular mechanisms of many ancient TCM theories. One example is the concept of "Kidneys Govern Bones." Here we discuss the molecular mechanisms supporting this theory and its potential significance in treating complications of chronic kidney disease (CKD) and diabetes mellitus...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27666759/ligand-trap-of-the-activin-receptor-type-iia-inhibits-osteoclast-stimulation-of-bone-remodeling-in-diabetic-mice-with-chronic-kidney-disease
#15
Toshifumi Sugatani, Olga A Agapova, Yifu Fang, Alycia G Berman, Joseph M Wallace, Hartmut H Malluche, Marie-Claude Faugere, William Smith, Victoria Sung, Keith A Hruska
Dysregulation of skeletal remodeling is a component of renal osteodystrophy. Previously, we showed that activin receptor signaling is differentially affected in various tissues in chronic kidney disease (CKD). We tested whether a ligand trap for the activin receptor type 2A (RAP-011) is an effective treatment of the osteodystrophy of the CKD-mineral bone disorder. With a 70% reduction in the glomerular filtration rate, CKD was induced at 14 weeks of age in the ldlr-/- high fat-fed mouse model of atherosclerotic vascular calcification and diabetes...
September 22, 2016: Kidney International
https://www.readbyqxmd.com/read/27665927/chronic-kidney-disease-gli1-adventitial-cells-have-a-critical-role-in-vascular-calcification-in-ckd
#16
Andrea Aguilar
No abstract text is available yet for this article.
November 2016: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/27649164/advanced-glycation-end-products-induce-apoptosis-of-vascular-smooth-muscle-cells-a-mechanism-for-vascular-calcification
#17
Sayo Koike, Shozo Yano, Sayuri Tanaka, Abdullah M Sheikh, Atsushi Nagai, Toshitsugu Sugimoto
Vascular calcification, especially medial artery calcification, is associated with cardiovascular death in patients with diabetes mellitus and chronic kidney disease (CKD). To determine the underlying mechanism of vascular calcification, we have demonstrated in our previous report that advanced glycation end-products (AGEs) stimulated calcium deposition in vascular smooth muscle cells (VSMCs) through excessive oxidative stress and phenotypic transition into osteoblastic cells. Since AGEs can induce apoptosis, in this study we investigated its role on VSMC apoptosis, focusing mainly on the underlying mechanisms...
2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27648407/parathyroid-ultrasonography-and-bone-metabolic-profile-of-patients-on-dialysis-with-hyperparathyroidism
#18
Cláudia Ribeiro, Maria Goretti Moreira Guimarães Penido, Milena Maria Moreira Guimarães, Marcelo de Sousa Tavares, Bruno das Neves Souza, Anderson Ferreira Leite, Leonardo Martins Caldeira de Deus, Lucas José de Campos Machado
AIM: To evaluate the parathyroid ultrasonography and define parameters that can predict poor response to treatment in patients with secondary hyperparathyroidism due to renal failure. METHODS: This cohort study evaluated 85 patients with chronic kidney disease stage V with parathyroid hormone levels above 800 pg/mL. All patients underwent ultrasonography of the parathyroids and the following parameters were analyzed: Demographic characteristics (etiology of chronic kidney disease, gender, age, dialysis vintage, vascular access, use of vitamin D), laboratory (calcium, phosphorus, parathyroid hormone, alkaline phosphatase, bone alkaline phosphatase), and the occurrence of bone changes, cardiovascular events and death...
September 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27648404/vascular-calcification-when-should-we-interfere-in-chronic-kidney-disease-patients-and-how
#19
REVIEW
Usama Abdel Azim Sharaf El Din, Mona Mansour Salem, Dina Ossama Abdulazim
Chronic kidney disease (CKD) patients are endangered with the highest mortality rate compared to other chronic diseases. Cardiovascular events account for up to 60% of the fatalities. Cardiovascular calcifications affect most of the CKD patients. Most of this calcification is related to disturbed renal phosphate handling. Fibroblast growth factor 23 and klotho deficiency were incriminated in the pathogenesis of vascular calcification through different mechanisms including their effects on endothelium and arterial wall smooth muscle cells...
September 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27647184/mineral-and-bone-disorder-and-its-association-with-cardiovascular-parameters-in-chinese-patients-with-chronic-kidney-disease
#20
Chu Zhou, Fang Wang, Jin-Wei Wang, Lu-Xia Zhang, Ming-Hui Zhao
BACKGROUND: Mineral and bone disorder (MBD), especially hyperphosphatemia, is an independently risk factor for adverse prognosis in patients with chronic kidney disease (CKD). However, CKD-MBD among Chinese population was poorly studied. This study aimed to investigate the status of MBD and its association with cardiovascular parameters in Chinese patients with predialysis CKD. METHODS: Chinese Cohort Study of Chronic Kidney Disease (C-STRIDE) is a prospective multicenter cohort study involving predialysis CKD patients in China...
2016: Chinese Medical Journal
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