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Hyperphosphatemia in CKD

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https://www.readbyqxmd.com/read/27900568/control-of-phosphate-balance-by-the-kidney-and-intestine
#1
REVIEW
Ichiro Kaneko, Sawako Tatsumi, Hiroko Segawa, Ken-Ichi Miyamoto
The prevention and correction of hyperphosphatemia are major goals of the treatment of chronic kidney disease (CKD)-bone mineral disorders, and thus, Pi balance requires special attention. Pi balance is maintained by intestinal absorption, renal excretion, and bone accretion. The kidney is mainly responsible for the plasma Pi concentration. In CKD, reduced glomerular filtration rate leads to various Pi metabolism abnormalities, and Pi absorption in the small intestine also has an important role in Pi metabolism...
November 30, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27837149/chronic-hyperphosphatemia-and-vascular-calcification-are-reduced-by-stable-delivery-of-soluble-klotho
#2
Julia M Hum, Linda M O'Bryan, Arun K Tatiparthi, Taryn A Cass, Erica L Clinkenbeard, Martin S Cramer, Manoj Bhaskaran, Robert L Johnson, Jonathan M Wilson, Rosamund C Smith, Kenneth E White
αKlotho (αKL) regulates mineral metabolism, and diseases associated with αKL deficiency are characterized by hyperphosphatemia and vascular calcification (VC). αKL is expressed as a membrane-bound protein (mKL) and recognized as the coreceptor for fibroblast growth factor-23 (FGF23) and a circulating soluble form (cKL) created by endoproteolytic cleavage of mKL. The functions of cKL with regard to phosphate metabolism are unclear. We tested the ability of cKL to regulate pathways and phenotypes associated with hyperphosphatemia in a mouse model of CKD-mineral bone disorder and αKL-null mice...
November 11, 2016: Journal of the American Society of Nephrology: JASN
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
#3
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/27803315/inhibition-of-gsk-3%C3%AE-increases-trabecular-bone-volume-but-not-cortical-bone-volume-in-adenine-induced-uremic-mice-with-severe-hyperparathyroidism
#4
Narihito Tatsumoto, Masaki Arioka, Shunsuke Yamada, Fumi Takahashi-Yanaga, Masanori Tokumoto, Kazuhiko Tsuruya, Takanari Kitazono, Toshiyuki Sasaguri
Patients with chronic kidney disease (CKD) are at increased risk for bone fractures compared with the general population. Repression of the Wnt/β-catenin signaling pathway is associated with bone abnormalities. Inhibition of glycogen synthase kinase (GSK)-3β, a critical component of the Wnt/β-catenin signaling pathway, increases bone volume through accumulation of β-catenin. It remains unknown whether inhibition of GSK-3β increases bone volume in CKD The present in vivo study examined the effects of GSK-3β inhibition on bone volume in CKD mice...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27737388/effectiveness-and-safety-of-a-6-month-treatment-with-paricalcitol-in-patients-on-hemodialysis-with-secondary-hyperparathyroidism
#5
Inés Olaizola, Hena Caorsi, Laura Fajardo, Alejandro Ferreiro, Nieves Campistrus, Deyanira Dolinsky, Alicia Petraglia, Pablo Ambrosoni
Introduction: The mineral bone disorder, particularly secondary hyperparathyroidism, in chronic kidney disease (CKD) has a systemic impact affecting not only bone metabolism. Therefore its correction is important to prevent cardiovascular, inflammatory and immune diseases. Objective: To assess the effectiveness and safety of intravenous paricalcitol administered over a 6 month period for the treatment of secondary hyperparathyroidism (SHPT) in patients undergoing conventional hemodialysis, with close follow-up of treatment response...
July 2016: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/27679712/fgf23-in-kidney-transplant-the-strange-case-of-doctor-jekyll-and-mister-hyde
#6
Giuseppe Cianciolo, Mario Cozzolino
During the last decade, a new view into the molecular mechanisms of chronic kidney disease-mineral bone disorder (CKD-MBD) has been proposed, with fibroblast growth factor 23 (FGF23) as a novel player in the field. Enhanced serum FGF23 levels cause a reduction in serum phosphate, together with calcitriol suppression and consequent hyperparathyroidism (HPT). In contrast, reduced serum FGF23 levels are associated with hyperphosphatemia, higher calcitriol levels and parathyroid hormone (PTH) suppression. In addition, serum FGF23 levels are greatly increased and positively correlated with serum phosphate levels in CKD patients...
October 2016: Clinical Kidney Journal
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
#7
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/27651467/the-efficacy-and-safety-of-sevelamer-and-lanthanum-versus-calcium-containing-and-iron-based-binders-in-treating-hyperphosphatemia-in-patients-with-chronic-kidney-disease-a-systematic-review-and-meta-analysis
#8
Steven Habbous, Sebastian Przech, Rey Acedillo, Sisira Sarma, Amit X Garg, Janet Martin
BACKGROUND: It remains unclear which phosphate binders should be preferred for hyperphosphatemia management in chronic kidney disease (CKD). METHODS: We performed a systematic review and meta-analysis of randomized trials comparing sevelamer or lanthanum with other phosphate binders in CKD. RESULTS: Fifty-one trials (8829 patients) were reviewed. Compared with calcium-based binders, all-cause mortality was nonsignificantly lower with sevelamer {risk ratio [RR] 0...
September 20, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/27647184/mineral-and-bone-disorder-and-its-association-with-cardiovascular-parameters-in-chinese-patients-with-chronic-kidney-disease
#9
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
https://www.readbyqxmd.com/read/27643443/treating-hyperphosphatemia-current-and-advancing-drugs
#10
Markus Ketteler, Orfeas Liangos, Patrick H Biggar
INTRODUCTION: Hyperphosphatemia is a hallmark of advanced chronic kidney disease (CKD) and associated with adverse outcomes. Preclinical and epidemiological studies strongly support a causal relationship between hyperphosphatemia and mortality as well as cardiovascular complications, especially including vascular, valvular and soft-tissue calcifications. Thus, appropriate phosphate lowering is considered to play a major role in health and longevity of CKD patients. In this respect, phosphate binders are the most powerful therapeutic option, while dietary phosphate restriction and intensified dialysis are valuable supportive approaches...
October 2016: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/27628245/the-cerebrovascular-chronic-kidney-disease-connection-perspectives-and-mechanisms
#11
Wei Ling Lau, Branko N Huisa, Mark Fisher
Chronic kidney disease (CKD) is an independent risk factor for the development of cerebrovascular disease, particularly small vessel disease which can manifest in a variety of phenotypes ranging from lacunes to microbleeds. Small vessel disease likely contributes to cognitive dysfunction in the CKD population. Non-traditional risk factors for vascular injury in uremia include loss of calcification inhibitors, hyperphosphatemia, increased blood pressure variability, elastinolysis, platelet dysfunction, and chronic inflammation...
September 14, 2016: Translational Stroke Research
https://www.readbyqxmd.com/read/27600818/nutritional-support-in-the-tertiary-care-of-patients-affected-by-chronic-renal-insufficiency-report-of-a-step-wise-personalized-pragmatic-approach
#12
Adamasco Cupisti, Claudia D'Alessandro, Biagio Di Iorio, Anna Bottai, Claudia Zullo, Domenico Giannese, Massimiliano Barsotti, Maria Francesca Egidi
BACKGROUND: Dietary treatment is helpful in CKD patients, but nutritional interventions are scarcely implemented. The main concern of the renal diets is its feasibility with regards to daily clinical practice especially in the elderly and co-morbid patients. This study aimed to evaluate the effects of a pragmatic, step-wise, personalized nutritional support in the management of CKD patients on tertiary care. METHODS: This is a case-control study. It included 823 prevalent out-patients affected by CKD stage 3b to 5 not-in-dialysis, followed by tertiary care in nephrology clinics; 305 patients (190 males, aged 70 ± 12 years) received nutritional support (nutritional treatment Group, NTG); 518 patients (281 males, aged 73 ± 13 years) who did not receive any dietary therapy, formed the control group (CG)...
September 6, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27588942/effectiveness-of-cinacalcet-in-patients-with-chronic-kidney-disease-and-secondary-hyperparathyroidism-not-receiving-dialysis
#13
Ariadna Pérez-Ricart, Maria Galicia-Basart, Maria Alcalde-Rodrigo, Alfons Segarra-Medrano, Josep-Maria Suñé-Negre, José-Bruno Montoro-Ronsano
BACKGROUND: Secondary hyperparathyroidism (SHPT) is a common complication in chronic kidney disease (CKD) patients. Cinacalcet could be a therapeutic option although its use is controversial in patients not receiving dialysis. Thus, the aim of this study is to assess the effectiveness and safety of cinacalcet in patients with CKD and SHPT without renal replacement treatment (RRT) and without renal transplantation (RT). METHODS: A retrospective observational study was conducted...
2016: PloS One
https://www.readbyqxmd.com/read/27461215/can-intestinal-phosphate-binding-or-inhibition-of-hydroxyapatite-growth-in-the-vascular-wall-halt-the-progression-of-established-aortic-calcification-in-chronic-kidney-disease
#14
Ellen Neven, Britt Opdebeeck, Annelies De Maré, Rida Bashir-Dar, Geert Dams, Rita Marynissen, Geert J Behets, Anja Verhulst, Bruce L Riser, Patrick C D'Haese
Vascular calcification significantly contributes to mortality in chronic kidney disease (CKD) patients. Sevelamer and pyrophosphate (PPi) have proven to be effective in preventing vascular calcification, the former by controlling intestinal phosphate absorption, the latter by directly interfering with the hydroxyapatite crystal formation. Since most patients present with established vascular calcification, it is important to evaluate whether these compounds may also halt or reverse the progression of preexisting vascular calcification...
November 2016: Calcified Tissue International
https://www.readbyqxmd.com/read/27389681/dose-response-efficacy-and-safety-of-pa21-in-japanese-hemodialysis-patients-with-hyperphosphatemia-a-randomized-placebo-controlled-double-blind-phase-ii-study
#15
Fumihiko Koiwa, Akira Terao
BACKGROUND: Hyperphosphatemia is common in chronic kidney disease (CKD) and associated with mortality and morbidity. We aimed to evaluate the dose-dependent efficacy and safety of PA21 (sucroferric oxyhydroxide), an iron-based phosphate binder, in Japanese hemodialysis patients with hyperphosphatemia. METHODS: In this double-blind, multicenter, Phase II study, 183 patients were randomized to placebo or PA21 at doses of 250, 500, 750, or 1000 mg (based on iron content) three times/day for 6 weeks...
July 7, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27368672/a-phase-1-study-of-the-safety-tolerability-pharmacodynamics-and-pharmacokinetics-of-tenapanor-in-healthy-japanese-volunteers
#16
Susanne Johansson, David P Rosenbaum, Mikael Knutsson, Maria Leonsson-Zachrisson
BACKGROUND: Tenapanor (RDX5791, AZD1722), a small molecule with minimal systemic availability, is an inhibitor of the sodium/hydrogen exchanger isoform 3 (NHE3). Tenapanor acts locally in the gut to reduce absorption of sodium and phosphate. It is being developed for the treatment of patients with hyperphosphatemia in CKD requiring dialysis and patients with constipation-predominant irritable bowel syndrome. We report the safety, pharmacodynamics, and pharmacokinetics of tenapanor in Japanese volunteers...
July 1, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27366711/prevalence-and-severity-of-disordered-mineral-metabolism-in-patients-with-chronic-kidney-disease-a-study-from-a-tertiary-care-hospital-in-india
#17
Sanjay Vikrant, Anupam Parashar
BACKGROUND: Disordered mineral metabolism is common complications of chronic kidney disease (CKD). However, there are limited data on the pattern of these disturbances in Indian CKD population. MATERIALS AND METHODS: This was a prospective observational study of CKD-mineral and bone disorder (CKD-MBD) over a period of 3 years. The biochemical markers of CKD-MBD, namely, calcium, phosphorus, alkaline phosphatase, intact parathyroid hormone (iPTH), and 25-hydoxyvitamin Vitamin D3 (25OHD), were measured in newly diagnosed CKD Stage 3-5 and prevalent CKD Stage 5D adult patients...
July 2016: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27330380/hyperphosphatemia-management-in-patients-with-chronic-kidney-disease
#18
REVIEW
Ahmed M Shaman, Stefan R Kowalski
Hyperphosphatemia in chronic kidney disease (CKD) patients is a potentially life altering condition that can lead to cardiovascular calcification, metabolic bone disease (renal osteodystrophy) and the development of secondary hyperparathyroidism (SHPT). It is also associated with increased prevalence of cardiovascular diseases and mortality rates. To effectively manage hyperphosphatemia in CKD patients it is important to not only consider pharmacological and nonpharmacological treatment options but also to understand the underlying physiologic pathways involved in phosphorus homoeostasis...
July 2016: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/27324680/ckd-mineral-bone-disorder-in-stage-4-and-5-ckd-what-we-know-today
#19
REVIEW
Michal L Melamed, Rupinder Singh Buttar, Maria Coco
Patients with CKD stages 4 and 5 experience biochemical derangements associated with CKD-mineral bone disorder. Some of the key abnormalities are hyperparathyroidism, hyperphosphatemia, hypocalcemia, and metabolic acidosis. We review the available treatments for these conditions and the evidence behind the treatments. We conclude that there is greater evidence for treating hyperphosphatemia than hyperparathyroidism. Treatment of metabolic acidosis in small clinical trials appears to be safe. We caution the reader about side effects associated with some of these treatments that differ in patients with CKD Stages 4 and 5 compared with patients on dialysis...
July 2016: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/27303079/sevelamer-carbonate-and-lanthanum-usage-evaluation-and-cost-considerations-at-a-veteran-s-affairs-medical-center
#20
Ross Robison, Danielle Cooney, Mary Beth Low, Niraj Desai
BACKGROUND: Hyperphosphatemia is a common problem in patients with chronic kidney disease (CKD). Calcium-containing phosphate binders are typically used as first-line therapy, primarily due to cost considerations. Non-calcium phosphate binders such as sevelamer and lanthanum may be considered in the appropriate setting. It is hypothesized that lanthanum is less costly and has a lower pill burden compared to sevelamer carbonate. OBJECTIVE: Determine the difference in cost (outcome 1) and tablet burden (outcome 2) between sevelamer carbonate and lanthanum within the Veteran population...
April 2016: Hospital Pharmacy
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