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Phosphate binders

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https://www.readbyqxmd.com/read/28916883/different-post-processing-conditions-for-3d-bioprinted-%C3%AE-tricalcium-phosphate-scaffolds
#1
Liciane Sabadin Bertol, Rodrigo Schabbach, Luis Alberto Loureiro Dos Santos
The development of 3D printing hardware, software and materials has enabled the production of bone substitute scaffolds for tissue engineering. Calcium phosphates cements, such as those based on α-tricalcium phosphate (α-TCP), have recognized properties of osteoinductivity, osteoconductivity and resorbability and can be used to 3D print scaffolds to support and induce tissue formation and be replaced by natural bone. At present, however, the mechanical properties found for 3D printed bone scaffolds are only satisfactory for non-load bearing applications...
September 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28914962/impaired-phosphate-tolerance-revealed-with-an-acute-oral-challenge
#2
Mandy E Turner, Christine A White, Wilma M Hopman, Emilie C Ward, Paul S Jeronimo, Michael A Adams, Rachel M Holden
Elevated serum phosphate is consistently linked with cardiovascular disease (CVD) events and mortality in the setting of normal and impaired kidney function. However, serum phosphate does not often exceed the upper limit of normal until glomerular filtration rate (GFR) falls below 30 mL/min/m(2) . It was hypothesized that the response to an oral, bioavailable phosphate load will unmask impaired phosphate tolerance, a maladaptation not revealed by baseline serum phosphate concentrations. In this study rats with varying kidney function as well as normo-phosphatemic human subjects, with inulin-measured GFR (13...
September 15, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28900759/efficacy-and-safety-of-sevelamer-carbonate-in-hyperphosphatemic-pediatric-patients-with-chronic-kidney-disease
#3
Sahar Fathallah-Shaykh, Dorota Drozdz, Joseph Flynn, Randall Jenkins, Katherine Wesseling-Perry, Sarah J Swartz, Craig Wong, Beverly Accomando, Gerald F Cox, Bradley A Warady
BACKGROUND: Treatment for hyperphosphatemia in chronic kidney disease (CKD) involves dietary control of phosphorus intake, dialysis, and treatment with oral phosphate binders, none of which were approved by the Federal Food and Drug Administration in pediatric patients at the time of this study. METHODS: This was a phase 2, multicenter study (NCT01574326) with a 2-week, randomized, placebo-controlled, fixed-dose period (FDP) followed by a 6-month, single-arm, open-label, dose-titration period (DTP), with the aim to evaluate the safety and efficacy of sevelamer carbonate (SC) in hyperphosphatemic pediatric patients with CKD...
September 12, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28869940/severe-secondary-hyperparathyroidism-in-a-hemodialysis-patient-a-case-report-from-mongolia
#4
Saruultuvshin Adiya, Khurtsbayar Damdinsuren, Chuluuntsetseg Dorj
Secondary hyperparathyroidism (SHPT) occurs in patients with chronic renal failure complicated with renal bone disease and soft tissue/vascular calcification. In dialysis patients with severe SHPT, medical treatment may fail and parathyroidectomy (PTX) is indicated for definitive treatment. Severe hypocalcemia from hungry bone disease or postoperative hypoparathyroidism may occur during the postoperative period. We report here a case of severe SHPT in a hemodialysis patient treated with phosphate binders, calcitriol, and calcimimetics but who still required PTX...
2017: Blood Purification
https://www.readbyqxmd.com/read/28853704/comparison-of-hypoalbuminemia-corrected-serum-calcium-using-bcp-albumin-assay-to-ionized-calcium-and-impact-on-prescribing-in-hemodialysis-patients%C3%A2
#5
Wenxin Cindy Pan, Wynnie Lau, Andre Mattman, Mercedeh Kiaii, Beverly Jung
BACKGROUND: Albumin-corrected calcium (cCa) is recommended over ionized calcium (iCa) in hemodialysis (HD) patients per the Kidney Disease: Improving Global Outcomes position statements due to cost and feasibility. Two common albumin assays, bromocresol green (BCG) and bromocresol purple (BCP), produce differing results in uremic patients. All previous studies compared iCa to cCa from a BCG assay. This study, using the BCP assay, aimed to compare cCa and total calcium, respectively, to iCa...
August 30, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28852493/gastrointestinal-complications-induced-by-sevelamer-crystals
#6
Claudia Yuste, Evangelina Mérida, Eduardo Hernández, Ana García-Santiago, Yolanda Rodríguez, Teresa Muñoz, Gonzalo Jesús Gómez, Ángel Sevillano, Manuel Praga
BACKGROUND: Sevelamer is a phosphate binder widely used in chronic kidney disease (CKD) patients. Sevelamer, as well as other resin-based binders, can crystallize leading to the formation of concretions. Sevelamer crystals (SC) have been associated with gastrointestinal (GI) mucosal injury. We describe three new cases of GI lesions associated with SC and review previously reported cases. METHODS: We describe three new cases of GI lesions associated with SC and review previously reported cases...
August 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28811853/effects-of-sevelamer-hydrochloride-on-uremic-toxins-serum-indoxyl-sulfate-and-p-cresyl-sulfate-in-hemodialysis-patients
#7
Cheng-Jui Lin, Chi-Feng Pan, Chih-Kuang Chuang, Hsuan-Liang Liu, Sung-Fa Huang, Han-Hsiang Chen, Chih-Jen Wu
BACKGROUND: Beside the phosphate binding effect, non-calcium non-aluminum phosphate binder, namely sevelamer hydrochloride (SH), has many other effects in dialysis patients. It can absorb many other compounds, decrease low-density lipoprotein cholesterol (LDL-C) level, and attenuate the progression of vascular calcification; it has been reported to have anti-inflammatory effect. However, it is not clear whether it has any effect on uremic toxins, i.e. serum indoxyl sulfate (IS) and p-cresyl sulfate, (PCS) in hemodialysis (HD) patients...
September 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28801122/deoxycholic-acid-a-metabolite-of-circulating-bile-acids-and-coronary-artery-vascular-calcification-in-ckd
#8
Anna Jovanovich, Tamara Isakova, Geoffrey Block, Jason Stubbs, Gerard Smits, Michel Chonchol, Makoto Miyazaki
BACKGROUND: Vascular calcification is common among patients with chronic kidney disease (CKD), and it is associated with all-cause and cardiovascular disease mortality. Deoxycholic acid, a metabolite of circulating bile acids, is elevated in CKD and induces vascular mineralization and osteogenic differentiation in animal models. STUDY DESIGN: Cohort analysis of clinical trial participants. SETTING & PARTICIPANTS: 112 patients with moderate to severe CKD (estimated glomerular filtration rate, 20-45mL/min/1...
August 9, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28777915/comparative-efficacy-and-safety-of-phosphate-binders-in-hyperphosphatemia-patients-with-chronic-kidney-disease
#9
Xiuqin Yang, Qingning Bai, Yanguo Li, Haijun Liu, Haiying Guo, Xiaolei Zhang
BACKGROUND: In this study, we coordinated a network meta-analysis to establish the efficacy and safety of different agents used in the treatment of hyperphosphatemia patients with chronic kidney disease. METHODS: PubMed, CNKI, and Embase were systematically searched to retrieve relevant studies. Outcomes were presented by mean differences, odds ratios, and corresponding 95% credible intervals for continuous outcomes and binary outcomes, respectively. Each therapy was ranked according to the value of surface under the cumulative ranking curve...
August 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28768926/melt-adsorption-as-a-manufacturing-method-for-fine-particles-of-wax-matrices-without-any-agglomerates
#10
Kai Shiino, Yukari Fujinami, Shin-Ichiro Kimura, Yasunori Iwao, Shuji Noguchi, Shigeru Itai
We have focused on melt adsorption as manufacture method of wax matrices to control particles size of granules more easily than melt granulation. The purpose of present study was to investigate the possibility of identifying a hydrophobic material with a low melting point, currently used as a meltable binder of melt granulation, to apply as a novel carrier in melt adsorption. Glyceryl monostearate (GM) and stearic acid (SA) were selected as candidate hydrophobic materials with low melting points. Neusilin US2 (US2), with a particle diameter of around 100 µm was selected as a surface adsorbent, while dibasic calcium phosphate dihydrate (DCPD), was used as a non-adsorbent control to prepare melting granules as a standard for comparison...
2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28761822/optimization-of-chitosan-and-cellulose-acetate-phthalate-controlled-delivery-of-methylprednisolone-for-treatment-of-inflammatory-bowel-disease
#11
Swati Jagdale, Apoorva Chandekar
Purpose: Inflammatory bowel disease (IBD) is a chronic, relapsing and often life-long disorder. The best way to tackle IBD is to develop a site targeted drug delivery. Methylprednisolone is a potent anti-inflammatory steroid. The relative potency of methylprednisolone to hydrocortisone is at least four is to one. The aim of the present research was to develop a colon targeted drug delivery for treatment of IBD. Methods: Compression coated drug delivery system was designed and optimised. Core tablet contained drug, croscarmellose sodium (CCS-superdisintegrant), avicel (binder) and dicalcium phosphate (diluent)...
June 2017: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28760336/dietary-magnesium-supplementation-prevents-and-reverses-vascular-and-soft-tissue-calcifications-in-uremic-rats
#12
Juan M Diaz-Tocados, Alan Peralta-Ramirez, María E Rodríguez-Ortiz, Ana I Raya, Ignacio Lopez, Carmen Pineda, Carmen Herencia, Addy Montes de Oca, Noemi Vergara, Sonja Steppan, M Victoria Pendon-Ruiz de Mier, Paula Buendía, Andrés Carmona, Julia Carracedo, Juan F Alcalá-Díaz, Joao Frazao, Julio M Martínez-Moreno, Antonio Canalejo, Arnold Felsenfeld, Mariano Rodriguez, Escolástico Aguilera-Tejero, Yolanda Almadén, Juan R Muñoz-Castañeda
Although magnesium has been shown to prevent vascular calcification in vitro, controlled in vivo studies in uremic animal models are limited. To determine whether dietary magnesium supplementation protects against the development of vascular calcification, 5/6 nephrectomized Wistar rats were fed diets with different magnesium content increasing from 0.1 to 1.1%. In one study we analyzed bone specimens from rats fed 0.1%, 0.3%, and 0.6% magnesium diets, and in another study we evaluated the effect of intraperitoneal magnesium on vascular calcification in 5/6 nephrectomized rats...
July 28, 2017: Kidney International
https://www.readbyqxmd.com/read/28752824/the-feasibility-of-in-vivo-detection-of-lanthanum-using-a-241-am-k-x-ray-fluorescence-system
#13
Joanna Nguyen, Zaid Keldani, Eric Da Silva, Ana Pejović-Milić, James L Gräfe
OBJECTIVE: Lanthanum (La) is commonly used in phosphate binders in the form of lanthanum carbonate in patients with end-stage kidney disease undergoing hemodialysis treatments. With this administration, there is the potential for La storage in the body with bone being the main site of concern. However, the long-term effects of residual La in the body on bone health are not yet known. In this work, we investigate the feasibility of using a K x-ray fluorescence (K-XRF) spectroscopy system to measure bone La in vivo...
August 21, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28749251/identification-of-spirocyclic-or-phosphate-substituted-quinolizine-derivatives-as-novel-hiv-1-integrase-inhibitors-a-patent-evaluation-of-wo2016094197a1-wo2016094198a1-and-wo2016154527a1
#14
Xiqiang Cheng, Ping Gao, Lin Sun, Ye Tian, Peng Zhan, Xinyong Liu
Highly active antiretroviral therapy (HAART) has been widely adopted to control the HIV-1 infection successfully. HIV-1 integrase (IN) inhibitors are primary drugs in HAART regimens targeting integration step in the HIV-1 life cycle. However, due to the emergence of viral resistance and cross-resistance amongst drugs, there is a pressing need for new and potent IN inhibitors. This review covers the three patents describing spirocyclic and phosphate substituted quinolizine derivatives as novel HIV-1 IN inhibitors for the discovery of new anti-HIV-1 drug candidates...
July 27, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28728523/structural-insights-into-the-binding-of-small-ligand-molecules-to-a-g-quadruplex-dna-located-in-the-hiv-1-promoter
#15
Petar M Mitrasinovic
Targeting guanine (G)-rich DNA sequences, folded into non-canonical G-quadruplex (G4) structures, by small ligand molecules is a promising strategy for gene therapy of various diseases. There is experimental proposal that, among eight studied ligands, nitidine chloride - NC and a benzo phenanthridine derivative - BPD have the highest binding affinities for such a sequence (5'-T(1)G(2)G(3)C(4)C(5)T(6)G(7)G(8)G(9)C(10)G(11)G(12)G(13)A(14)C(15)T(16)G(17)G(18)G(19)-3') in the HIV-1 promoter, indicating that an anti-HIV-1 prodrug may regulate the expression of the promoter...
July 20, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28724618/initiation-of-sevelamer-and-mortality-among-hemodialysis-patients-treated-with-calcium-based-phosphate-binders
#16
Hirotaka Komaba, Mia Wang, Masatomo Taniguchi, Suguru Yamamoto, Takanobu Nomura, Douglas E Schaubel, Abigail R Smith, Jarcy Zee, Angelo Karaboyas, Brian Bieber, Masafumi Fukagawa, Francesca Tentori
BACKGROUND AND OBJECTIVES: Prior studies have shown that sevelamer attenuates progression of arterial calcification and may reduce the risk of death compared with calcium-based phosphate binders. In clinical practice, however, sevelamer is used not only as an alternative but also as an add-on therapy in patients already being treated with calcium-based phosphate binders. We analyzed the Dialysis Outcomes and Practice Patterns Study (DOPPS) data to test the hypothesis that the initiation of sevelamer is associated with improved survival in patients on hemodialysis treated with calcium-based phosphate binders...
September 7, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28717990/iron-based-phosphate-binders-a-paradigm-shift-in-the-treatment-of-hyperphosphatemic-anemic-ckd-patients
#17
REVIEW
Francesco Locatelli, Lucia Del Vecchio
The partial correction of anemia and the normalization of phosphate and blood pressure are the mainstay of treatment of patients with chronic kidney disease (CKD). Available anti-hypertensive drugs, erythropoiesis stimulating agents (ESAs) and iron supplements have resolved quite satisfactorily the goal of controlling hypertension and partially correcting anemia. Unfortunately, the treatment of hyperphosphatemia is still far from resolved. Phosphate binders have poor tolerability and/or limited efficacy, leading to the prescription of many tablets that achieve only a mild-to-moderate effect...
July 17, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28714648/-phosphate-binders-what-are-the-recent-evidences
#18
Iméne Achek Bouajila, Pierre-Yves Martin, Sophie De Seigneux
Hyperphosphatemia is a late complication of chronic kidney disease (CKD). It is a major non-traditional cardiovascular risk factor in CKD. The management of hyperphosphatemia is based on restriction of phosphate intake, phosphate binders and dialysis. Phosphate binders are divided into calcium-based and non-calcium-based binders. Recent evidence suggest restricting the dose of calcium-based phosphate binders because of the associated increased mortality in compared to non-calcic ones. New treatments are under development such as inhibitors of kidney or intestinal phosphate absorption...
February 22, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28704404/pa21-a-novel-phosphate-binder-improves-renal-osteodystrophy-in-rats-with-chronic-renal-failure
#19
Atsushi Yaguchi, Satoshi Tatemichi, Hiroo Takeda, Mamoru Kobayashi
The effects of PA21, a novel iron-based and non-calcium-based phosphate binder, on hyperphosphatemia and its accompanying bone abnormality in chronic kidney disease-mineral and bone disorder (CKD-MBD) were evaluated. Rats with adenine-induced chronic renal failure (CRF) were prepared by feeding them an adenine-containing diet for four weeks. They were also freely fed a diet that contained PA21 (0.5, 1.5, and 5%), sevelamer hydrochloride (0.6 and 2%) or lanthanum carbonate hydrate (0.6 and 2%) for four weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28700185/-dialysis-and-cookers-a-project-for-the-empowerment-of-patients-in-managing-their-own-chronic-renal-failure
#20
REVIEW
Mara Cabibbe, Alberto Montoli, Franca Cassaro, Paola Cortesi, Rossana D'Oria, Michela Izzo, Monica Grotti, Nadia Manca, Filomena Marino, Cecilia Biazzi, Giuliano Cingoli, Giacomo Colussi
The phosphate and potassium control is indispensable to dominate the secondary hyperparathyroidism and reduce cardiovascular mortality in dialysis patients. Most of them receive only theoretical nutritional information. We therefore organized a cooking workshop for dialysis patients, with a multidisciplinary team consisting of nurses, nephrologists, a dietitian and a professional chef, to directly teach the patients and their families how to realize a low phosphorus and potassium menu, assessing the proper use of phosphate binders, and blood tests at baseline and at three and six months...
June 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
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