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https://www.readbyqxmd.com/read/27907058/choice-of-high-dose-intravenous-iron-preparation-determines-hypophosphatemia-risk
#1
Benedikt Schaefer, Philipp Würtinger, Armin Finkenstedt, Vickie Braithwaite, André Viveiros, Maria Effenberger, Irene Sulzbacher, Alexander Moschen, Andrea Griesmacher, Herbert Tilg, Wolfgang Vogel, Heinz Zoller
BACKGROUND: Ferric carboxymaltose (FCM) and iron isomaltoside 1000 (IIM) are increasingly used because they allow correction of severe iron deficiency in a single infusion. A transient decrease in serum phosphate concentrations is a frequent side effect of FCM. AIM: To characterize this adverse event and search for its predictors in a gastroenterology clinic patient cohort. METHODS: Electronic medical records of patients attending the University Hospital of Innsbruck were searched for the keywords ferric carboxymaltose or iron isomaltoside...
2016: PloS One
https://www.readbyqxmd.com/read/27885740/asp5878-a-selective-fgfr-inhibitor-to-treat-fgfr3-dependent-urothelial-cancer-with-or-without-chemoresistance
#2
Aya Kikuchi, Tomoyuki Suzuki, Taisuke Nakazawa, Masateru Iizuka, Ayako Nakayama, Tohru Ozawa, Minoru Kameda, Nobuaki Shindoh, Tadashi Terasaka, Masaaki Hirano, Sadao Kuromitsu
FGF/FGFR gene aberrations such as amplification, mutation and fusion are associated with many types of human cancers including urothelial cancer. FGFR kinase inhibitors are expected to be a targeted therapy for urothelial cancer harboring FGFR3 gene alternations. ASP5878, a selective inhibitor of FGFR1, 2, 3 and 4 under clinical investigation, selectively inhibited cell proliferation of urothelial cancer cell lines harboring FGFR3 point mutation or fusion (UM-UC-14, RT-112, RT4 and SW 780) among 23 urothelial cancer cell lines...
November 25, 2016: Cancer Science
https://www.readbyqxmd.com/read/27879395/a-computationally-identified-compound-antagonizes-excess-fgf-23-signaling-in-renal-tubules-and-a-mouse-model-of-hypophosphatemia
#3
Zhousheng Xiao, Demian Riccardi, Hector A Velazquez, Ai L Chin, Charles R Yates, Jesse D Carrick, Jeremy C Smith, Jerome Baudry, L Darryl Quarles
Fibroblast growth factor-23 (FGF-23) interacts with a binary receptor complex composed of α-Klotho (α-KL) and FGF receptors (FGFRs) to regulate phosphate and vitamin D metabolism in the kidney. Excess FGF-23 production, which causes hypophosphatemia, is genetically inherited or occurs with chronic kidney disease. Among other symptoms, hypophosphatemia causes vitamin D deficiency and the bone-softening disorder rickets. Current therapeutics that target the receptor complex have limited utility clinically. Using a computationally driven, structure-based, ensemble docking and virtual high-throughput screening approach, we identified four novel compounds predicted to selectively inhibit FGF-23-induced activation of the FGFR/α-KL complex...
November 22, 2016: Science Signaling
https://www.readbyqxmd.com/read/27861640/association-of-high-density-lipoprotein-subclasses-with-chronic-kidney-disease-progression-atherosclerosis-and-klotho
#4
Eiichiro Kanda, Masumi Ai, Mitsuyo Okazaki, Masayuki Yoshida, Yoshitaka Maeda
BACKGROUND: Atherosclerosis is often a complication of chronic kidney disease (CKD) because of dyslipidemia and CKD-mineral and bone disorder. High-density lipoproteins (HDLs) are grouped into various subclasses composed of multiple proteins and lipids, and their transformation is altered in CKD. We investigated the roles of lipoprotein subclasses in CKD progression, and atherosclerosis, and the relationships with Klotho and fibroblast growth factor (FGF) 23. METHODS: Seventy-one CKD patients were enrolled in this prospective cohort study in Japan...
2016: PloS One
https://www.readbyqxmd.com/read/27861335/response-of-fibroblast-growth-factor-23-to-volume-interventions-in-arterial-hypertension-and-diabetic-nephropathy
#5
Jelmer K Humalda, Sarah Seiler-Muler, Arjan J Kwakernaak, Marc G Vervloet, Gerjan Navis, Danilo Fliser, Gunnar H Heine, Martin H de Borst
Fibroblast growth factor 23 (FGF-23) rises progressively in chronic kidney disease and is associated with adverse cardiovascular outcomes. FGF-23 putatively induces volume retention by upregulating the sodium-chloride cotransporter (NCC). We studied whether, conversely, interventions in volume status affect FGF-23 concentrations.We performed a post hoc analysis of 1) a prospective saline infusion study with 12 patients with arterial hypertension who received 2 L of isotonic saline over 4 hours, and 2) a randomized controlled trial with 45 diabetic nephropathy (DN) patients on background angiotensin-converting enzyme -inhibition (ACEi), who underwent 4 6-week treatment periods with add-on hydrochlorothiazide (HCT) or placebo, combined with regular sodium (RS) or low sodium (LS) diet in a cross-over design...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27849387/serum-levels-of-f%C3%A4-broblast-growth-factor-23-osteoproteger%C3%A4-n-and-receptor-act%C3%A4-vator-of-nuclear-factor-kappa-b-l%C3%A4-gand-rankl-%C3%A4-n-pat%C3%A4-ents-w%C3%A4-h-prolact%C3%A4-noma
#6
Muyesser Sayki Arslan, Mustafa Sahin, Melia Karakose, Esra Tutal, Oya Topaloglu, Bekir Ucan, Taner Demirci, Mustafa Caliskan, Seyda Sahingol, Mustafa Ozbek, Erman Cakal
PURPOSE: The aim of this study to was to evaluate the effect of fibroblast growth factor-23 (FGF-23), osteoprotegerin (OPG), receptor activator nuclear kB ligand (RANKL), and vitamin D hormones on bone loss in patients with hyperprolactinemia due to the pituitary prolactinoma. METHODS: 46 premenopausal female patients with prolactinoma and age and sex matched healthy controls (Group 3, n=20) were recruited to this cross sectional study. Prolactinoma patients were divided into two groups as patients newly diagnosed (Group 1, n=26), and under cabergoline treatment (Group 2, n=20)...
November 16, 2016: Endocrine Practice
https://www.readbyqxmd.com/read/27805900/circulating-fibroblast-growth-factor-23-level-and-paraoxonase-1-lactonase-activity-in-chronic-hemodialysis-patients-their-impact-on-the-incidence-of-native-av-fistula-thrombosis
#7
Samir F Zohny, Mahmoud Abd El-Fattah, Jalaluddin A Khan
PURPOSE: Thrombosis of native arteriovenous (AV) fistula is an important cause of complications in hemodialysis (HD) patients. The purpose of this study was to investigate the usefulness of measuring circulating fibroblast growth factor-23 (FGF-23) level and paraoxonase-1 (PON1) lactonase activity as potential predictors of native AV fistula thrombosis in chronic HD patients. METHODS: This study included 83 HD patients (48 with thrombosed and 35 with non-thrombosed native AV fistulas) and 38 healthy volunteers...
October 14, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27801526/longitudinal-assessment-of-cardiac-morphology-and-function-following-kidney-transplantation
#8
Clark Kensinger, Antonio Hernandez, Aihua Bian, Meagan Fairchild, Guanhua Chen, Loren Lipworth, T Alp Ikizler, Kelly A Birdwell
BACKGROUND: Abnormal cardiac morphology is a risk factor for cardiovascular complications in kidney transplant patients. A supraphysiologic level of fibroblast growth factor 23 (FGF-23) has been associated with myocardial hypertrophy in this patient population. Our aim was to evaluate the change in cardiac morphology and function following kidney transplantation and to evaluate the association between the change in FGF-23 concentrations and cardiac morphology. METHODS: We performed a longitudinal, prospective cohort study of 143 kidney transplant recipients (73% male, 75% white) measuring left ventricular (LV) mass index, left atrial (LA) volume index, and ejection fraction (EF) by echocardiography at months 1, 12, and 24 post-transplant...
November 1, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27788150/calciotropic-and-phosphaturic-hormones-in-end-stage-heart-failure-patients-supported-by-a-left-ventricular-assist-device
#9
Armin Zittermann, Jana B Ernst, Stefan Pilz, Jens Dreier, Joachim Kuhn, Cornelius Knabbe, Jan F Gummert, Michiel Morshuis, Hendrik Milting
BACKGROUND: Calcium and phosphate are central for myocardial contractility and energy metabolism, and low levels of the calciotropic hormone 1,25-dihydroxyvitamin D (1,25(OH)2D), as well as high levels of the phosphaturic hormone fibroblast growth factor (FGF)-23, are independently associated with poor clinical outcome in heart failure (HF) patients. We therefore aimed to investigate the postoperative time course of the aforementioned hormones in HF patients supported with a left-ventricular assist device (LVAD) implant...
2016: PloS One
https://www.readbyqxmd.com/read/27771610/a-phase-ii-study-of-tivozanib-in-patients-with-metastatic-and-nonresectable-soft-tissue-sarcomas
#10
M Agulnik, R L B Costa, M Milhem, A W Rademaker, B C Prunder, D Daniels, B T Rhodes, C Humphreys, S Abbinanti, L Nye, R Cehic, A Polish, C Vintilescu, T McFarland, K Skubitz, S Robinson, S Okuno, B A Van Tine
BACKGROUND: Soft tissue sarcomas (STSs) overexpress vascular endothelial growth factors (VEGF) and VEGF-receptors (VEGFR) activation have been associated with tumor aggressiveness. Tivozanib is a potent small molecule tyrosine kinase inhibitor against VEGFR1-3, with activity against PDGFRα/β and cKIT. The primary endpoint of this study was progression free survival (PFS) rate at 16 weeks. Secondary end points were overall survival (OS), response rate, safety and correlative studies...
October 22, 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/27770793/long-term-evolution-of-endothelial-function-during-kidney-transplantation
#11
Clark Kensinger, Aihua Bian, Meagan Fairchild, Guanhua Chen, Loren Lipworth, T Alp Ikizler, Kelly A Birdwell
BACKGROUND: Endothelial dysfunction is an important precursor to the development of atherosclerosis, and has been suggested to play a role in the increased cardiovascular risk in patients with end stage renal disease. Endothelial function improves rapidly following post kidney transplantation, but the long term change remains unclear. Hypothesizing that endothelial function would remain improved long term post kidney transplantation, we evaluated the longitudinal change of endothelial function, measured by flow-mediated dilation (FMD) of the brachial artery, from months 1 to 24 post transplantation...
October 22, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27746210/perspective-and-priorities-for-improvement-of-parathyroid-hormone-pth-measurement-a-view-from-the-ifcc-working-group-for-pth
#12
Catharine M Sturgeon, Stuart Sprague, Alison Almond, Etienne Cavalier, William D Fraser, Alicia Schimnich-Algeciras, Ravinder Singh, Jean-Claude Souberbielle, Hubert W Vesper
Parathyroid hormone (PTH) measurement in serum or plasma is a necessary tool for the exploration of calcium/phosphorus disorders, and is widely used as a surrogate marker to assess skeletal and mineral disorders associated with chronic kidney disease (CKD), referred to as CKD-bone mineral disorders (CKD-BMD). CKD currently affects >10% of the adult population in the United States and represents a major health issue worldwide. Disturbances in mineral metabolism and fractures in CKD patients are associated with increased morbidity and mortality...
October 13, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/27732085/fgf2-high-molecular-weight-isoforms-contribute-to-osteoarthropathy-in-male-mice
#13
Patience Meo Burt, Liping Xiao, Caroline Dealy, Melanie C Fisher, Marja M Hurley
Humans with X-linked hypophosphatemia (XLH) and Hyp mice, the murine homolog of the disease, develop severe osteoarthropathy and the precise factors that contribute to this joint degeneration remain largely unknown. Fibroblast growth factor 2 (FGF2) is a key regulatory growth factor in osteoarthritis. Although there are multiple FGF2 isoforms the potential involvement of specific FGF2 isoforms in joint degradation has not been investigated. Mice that overexpress the high molecular weight FGF2 isoforms in bone (HMWTg mice) phenocopy Hyp mice and XLH subjects and Hyp mice overexpress the HMWFGF2 isoforms in osteoblasts and osteocytes...
December 2016: Endocrinology
https://www.readbyqxmd.com/read/27730762/optimizing-a-multifunctional-microsphere-scaffold-to-improve-neural-precursor-cell-transplantation-for-traumatic-brain-injury-repair
#14
Nolan B Skop, Frances Calderon, Cheul H Cho, Chirag D Gandhi, Steven W Levison
Tissue engineering using stem cells is widely used to repair damaged tissues in diverse biological systems; however, this approach has met with less success in regenerating the central nervous system (CNS). In this study we optimized and characterized the surface chemistry of chitosan-based scaffolds for CNS repair. To maintain radial glial cell (RGC) character of primitive neural precursors, fibronectin was adsorbed to chitosan. The chitosan was further modified by covalently linking heparin using genipin, which then served as a linker to immobilize fibroblast growth factor-2 (FGF-2), creating a multifunctional film...
October 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27725315/cardiac-actions-of-fibroblast-growth-factor-23
#15
Christian Faul
Fibroblast growth factors (FGF) are mitogenic signal mediators that induce cell proliferation and survival. Although cardiac myocytes are post-mitotic, they have been shown to be able to respond to local and circulating FGFs. While precise molecular mechanisms are not well characterized, some FGF family members have been shown to induce cardiac remodeling under physiologic conditions by mediating hypertrophic growth in cardiac myocytes and by promoting angiogenesis, both events leading to increased cardiac function and output...
October 7, 2016: Bone
https://www.readbyqxmd.com/read/27721584/the-three-sisters-of-fate-in-multiple-sclerosis-klotho-clotho-fibroblast-growth-factor-23-lachesis-and-vitamin-d-atropos
#16
Hamit Yasar Ellidag, Necat Yilmaz, Fatma Kurtulus, Ozgur Aydin, Esin Eren, Ayca Inci, Suleyman Dolu, Fatma Demet Arslan Ince, Özlem Giray, Aylin Yaman
BACKGROUND: The klotho (Klt)-fibroblast growth factor-23 (FGF-23)-vitamin D axis is the main component of calcium (Ca) and phosphorus (P) metabolisms; on the contrary, it is also secreted from the choroid plexus (CP). PURPOSE: This study is aimed at evaluating serum soluble Klt (sKlt), FGF-23, and 25-(OH)-vitamin D levels in multiple sclerosis (MS) patients. METHODS: Thirty-two relapsing-remitting MS patients (11 males and 21 females; mean age 38...
September 2016: Annals of Neurosciences
https://www.readbyqxmd.com/read/27704252/extrarenal-effects-of-fgf23
#17
Dieter Haffner, Maren Leifheit-Nestler
Chronic kidney disease (CKD) is associated with an increased risk of cardiovascular mortality, infections, and impaired cognitive function. It is characterized by excessively increased levels of the phosphaturic hormone fibroblast growth factor 23 (FGF23) and a deficiency of its co-receptor Klotho. Despite the important physiological effect of FGF23 in maintaining phosphate homeostasis, there is increasing evidence that higher FGF23 levels are a risk factor for mortality and cardiovascular disease. FGF23 directly induces left ventricular hypertrophy via activation of the FGF receptor 4/calcineurin/nuclear factor of activated T cells signaling pathway...
October 4, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27679852/the-relationship-of-novel-plasma-proteins-in-the-early-neonatal-period-with-retinopathy-of-prematurity
#18
Anne M Lynch, Brandie D Wagner, Naresh Mandava, Alan G Palestine, Peter M Mourani, Emily A McCourt, Scott C N Oliver, Steven H Abman
Purpose: Retinopathy of prematurity (ROP) is a vision-threatening disease associated with abnormal retinal vascular development. Proteins from the insulin-like growth factor pathway are related to ROP. However, there is a paucity of research on the role of other proteins in ROP. The aim of this study was to identify plasma proteins related to clinically significant ROP. Methods: We measured 1121 plasma proteins in the early neonatal period in infants at risk for ROP using an aptamer-based proteomic technology...
September 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27679713/fgf23-is-associated-with-early-post-transplant-hypophosphataemia-and-normalizes-faster-than-ipth-in-living-donor-renal-transplant-recipients-a-longitudinal-follow-up-study
#19
Narayan Prasad, Akhilesh Jaiswal, Vikas Agarwal, Shashi Kumar, Saurabh Chaturvedi, Subhash Yadav, Amit Gupta, Raj K Sharma, Dharmendra Bhadauria, Anupama Kaul
BACKGROUND: We aimed to longitudinally analyse changes in the levels of serum fibroblast growth factor 23 (FGF23), intact parathyroid hormone (iPTH) and associated minerals in patients undergoing renal transplantation. METHODS: Sixty-three patients with end-stage renal disease (ESRD) who underwent living donor transplantation were recruited. Serum FGF23, iPTH, uric acid, inorganic phosphorous (iP), blood urea nitrogen and serum creatinine were measured pre-transplant and at 1 (M1), 3 (M3) and 12 months (M12) post-transplantation...
October 2016: Clinical Kidney Journal
https://www.readbyqxmd.com/read/27667892/proteomic-biomarkers-panel-new-insights-in-chronic-kidney-disease
#20
Simona Mihai, Elena Codrici, Ionela Daniela Popescu, Ana-Maria Enciu, Elena Rusu, Diana Zilisteanu, Radu Albulescu, Gabriela Anton, Cristiana Tanase
Chronic kidney disease, despite being a "silent epidemic" disease, represents one of the main causes of mortality in general population, along with cardiovascular disease, which is the leading cause of poor prognosis for these patients. The specific objective of our study was to characterize the relationship between the inflammatory status, the bone disorders markers, and kidney failure in chronic kidney disease patient stages 2-4, in order to design a novel biomarker panel that improves early disease diagnosis and therapeutic response, thus being further integrated into clinical applications...
2016: Disease Markers
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