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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
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
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
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
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
Z Z Ren, D E Bütz, A N Wahhab, A J Piepenburg, M E Cook
Phytase hydrolyzes phytate rendering phosphorus available for intestinal absorption, while systemic neutralization of fibroblast growth factor 23 (FGF-23), using anti-FGF-23 antibody, has been shown to increase phosphate retention. Hence, neutralization of FGF-23 should be additive with phytase in reducing dietary non-phytate phosphorus (nPP) needs in chickens fed plant-based diets rich in phytic acid. This study was designed to test the additive effects of maternally derived anti-FGF-23 antibody and dietary phytase on the performance of chicks fed a low nPP diet from one to 14 d...
September 24, 2016: Poultry Science
T Chazal, V Khanine, O Lidove, S Godot, J-M Ziza
INTRODUCTION: Osteomalacia is associated with diffuse pain and multiple fractures and therefore, diagnosis and treatment of this condition are necessary. Clinicians should be aware of an uncommon mechanism of osteomalacia where hypophosphataemia is secondary to renal phosphaturia because of the production by a mesenchymal phosphaturic tumor of FGF-23. This tumor should be localized and removed to cure this tumor-induced osteomalacia. OBSERVATION: A 70-year-old female patient was admitted to explore diffuse pain caused by multiple fractures secondary to osteomalacia...
September 19, 2016: La Revue de Médecine Interne
Bas C J Majoor, Natasha M Appelman-Dijkstra, M Fiocco, Michiel A J van de Sande, P D Sander Dijkstra, Neveen A T Hamdy
INTRODUCTION: McCune-Albright syndrome (MAS) is a rare bone disorder characterized by fibrous dysplasia (FD), endocrinopathies and café-au-lait patches. FD patients have been shown to respond favourably to treatment with bisphosphonates, but data are scarce in the more severe polyostotic form (PFD), including MAS, and factors determining treatment outcome are not known, particularly in the long-term. METHODS: We evaluated the biochemical (bone turnover markers; BTMs) and clinical (pain reduction) outcome of bisphosphonate therapy in eleven patients with MAS and 30 patients with PFD: median duration of treatment 6 years (range 2-25)...
September 20, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
Zhouzheng Ren, Daniel E Bütz, Jordan M Sand, Mark E Cook
Novel means to reduce phosphate input into poultry feeds and increase its retention would preserve world phosphate reserves and reduce environmental impact of poultry production. Here we show that a maternally derived antibody to a fibroblast growth factor-23 (FGF-23) peptide (GMNPPPYS) alleviated phosphorus deficiency in chicks fed low non-phytate phosphorus (nPP) diets. White Leghorn laying hens were vaccinated with either an adjuvant control or the synthetic FGF-23 peptide, and chicks with control or anti-FGF-23 maternal antibodies were fed a diet containing either 0...
September 19, 2016: Poultry Science
Gordon A Begg, Gregory Y H Lip, Sven Plein, Muzahir H Tayebjee
INTRODUCTION: External direct current cardioversion (DCCV) is an established treatment for AF but is associated with procedural risk and high AF recurrence rates. Cardiac fibrosis has been associated with AF, and circulating biomarkers have been suggested as a method of its assessment, but which biomarkers are suitable is yet to be determined. This study examines the differences between levels of procollagen type III N terminal peptide (PIIINP), type I collagen carboxyl telopeptide (ICTP), galectin-3 (gal-3) and fibroblast growth factor 23 (FGF-23) in DCCV patients, and disease-and-age-matched controls...
September 10, 2016: Clinical Biochemistry
Lars Lind, Johan Sundström, Markus Stenemo, Emil Hagström, Johan Ärnlöv
BACKGROUND: Apart from several established clinical risk factors for atrial fibrillation (AF), a number of biomarkers have also been identified as potential risk factors for AF. None of these have so far been adopted in clinical practice. OBJECTIVE: To use a novel custom-made proteomics chip to discover new prognostic biomarkers for AF risk. METHODS: In two independent community-based cohorts (Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study (978 participants without AF, mean age 70...
September 8, 2016: Heart: Official Journal of the British Cardiac Society
Y Coskun, S Paydas, M Balal, S Soyupak, E Kara
BACKGROUND: Posttransplantation bone disease develops commonly and results in important complications. In this study, we aimed to investigate the relationship between bone diseases and serum fibroblast growth factor-23 (FGF-23) in renal transplant recipients. METHODS: This study was conducted in 106 kidney transplant recipients (KTrs; group G1) and 30 patients with chronic kidney disease (group G2). Patients with fever, heart failure, angina pectoris, acute renal failure, malignant disease, or any gastrointestinal disease were excluded...
July 2016: Transplantation Proceedings
Daniela Verzola, Francesca Ansaldo, Samantha Milanesi, Emanuele Luigi Parodi, Gian Marco Rosa, Antonella Sofia, Alice Bonanni, Francesca Viazzi, Manrico Balbi, Giacomo Garibotto
Fibroblast Growth Factor-23 (FGF-23) accumulates in blood of patients with chronic kidney disease (CKD) and is associated both with cardiovascular complications and disease progression. However, our knowledge of the sites and mechanisms which regulate plasma FGF-23 is still incomplete. We measured plasma intact FGF-23 across the kidney, splanchnic organs and lung in eleven patients (eGFR 60 ± 6 ml/min) during elective diagnostic cardiac catheterizations. In these patients FGF-23 was removed by the kidney, with a fractional extraction (FE) of ~22%...
August 24, 2016: American Journal of Physiology. Renal Physiology
Donal J Sexton, M W O'Reilly, P Geoghegan, S M Kinsella, P J Moran, A W O'Regan
BACKGROUND: Serum fibroblastic growth factor (FGF) 23 has recently been established as a major physiological regulator of phosphate homeostasis and may have a causal role in adverse cardiovascular and bone outcomes. However its role in states of disordered phosphate homeostasis and normal kidney function is as yet under characterised. AIMS: To investigate whether this biomarker of vascular calcification and adverse bone outcomes is detectable in patients with sarcoidosis...
2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
R F Geddes, V Biourge, Y Chang, H M Syme, J Elliott
BACKGROUND: Dietary phosphate and protein restriction decreases plasma PTH and FGF-23 concentrations and improves survival time in azotemic cats, but has not been examined in cats that are not azotemic. HYPOTHESIS: Feeding a moderately protein- and phosphate-restricted diet decreases PTH and FGF-23 in healthy older cats and thereby slows progression to azotemic CKD. ANIMALS: A total of 54 healthy, client-owned cats (≥ 9 years). METHODS: Prospective double-blinded randomized placebo-controlled trial...
September 2016: Journal of Veterinary Internal Medicine
Nao Souma, Tamara Isakova, David Lipiszko, Ralph L Sacco, Mitchell S V Elkind, Janet T DeRosa, Shonni J Silverberg, Armando J Mendez, Chuanhui Dong, Clinton B Wright, Myles Wolf
CONTEXT: An elevated fibroblast growth factor (FGF) 23 is an independent risk factor for cardiovascular disease and mortality in patients with kidney disease. The relationship between FGF23 and cause-specific mortality in the general population is unknown. OBJECTIVE: To investigate the association of elevated FGF23 with the risk of cause-specific mortality in a racially and ethnically diverse urban general population. DESIGN, SETTING, PARTICIPANTS: The Northern Manhattan Study is a population-based prospective cohort study...
October 2016: Journal of Clinical Endocrinology and Metabolism
José Tuñón, Ignacio González-Hernández, Lucía Llanos-Jiménez, Joaquín Alonso-Martín, Juan M Escudier-Villa, Nieves Tarín, Carmen Cristóbal, Petra Sanz, Ana M Pello, Álvaro Aceña, Rocío Carda, Miguel Orejas, Marta Tomás, Paula Beltrán, Marta Calero Rueda, Esther Marcos, José María Serrano-Antolín, Carlos Gutiérrez-Landaluce, Rosa Jiménez, Jorge Cabezudo, Alejandro Curcio, Germán Peces-Barba, Emilio González-Parra, Raquel Muñoz-Siscart, María Luisa González-Casaus, Antonio Lorenzo, Ana Huelmos, Javier Goicolea, Borja Ibáñez, Gonzalo Hernández, Luis M Alonso-Pulpón, Jerónimo Farré, Óscar Lorenzo, Ignacio Mahíllo-Fernández, Jesús Egido
INTRODUCTION: Decreased plasma vitamin D (VD) levels are linked to cardiovascular damage. However, clinical trials have not demonstrated a benefit of VD supplements on left ventricular (LV) remodelling. Anterior ST-elevation acute myocardial infarction (STEMI) is the best human model to study the effect of treatments on LV remodelling. We present a proof-of-concept study that aims to investigate whether VD improves LV remodelling in patients with anterior STEMI. METHODS AND ANALYSIS: The VITamin D in Acute Myocardial Infarction (VITDAMI) trial is a multicentre, randomised, double-blind, placebo-controlled trial...
2016: BMJ Open
A Zittermann, J B Ernst
AIMS: Despite adherence to evidence-based guidelines, heart failure [HF] still results in 5-year mortality rates of 50%, indicating a need to implement additional preventive/intervention strategies. This review summarizes data on alterations in the calciotropic and phosphaturic hormones 1,25-dihydroxyvitamin D [1,25(OH)2D] and fibroblast growth factors-23 [FGF-23] in HF and discusses non-pharmacological measures for targeting these hormones. DATA SYNTHESIS: The role of 1,25(OH)2D in the regulation of calcium and phosphate homeostasis is central...
June 28, 2016: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
Chethan Puttarajappa, Sundaram Hariharan
No abstract text is available yet for this article.
July 29, 2016: Transplantation
Javier Donate-Correa, Fernando Henríquez-Palop, Ernesto Martín-Núñez, Nayra Pérez-Delgado, Mercedes Muros-de-Fuentes, Carmen Mora-Fernández, Juan F Navarro-González
BACKGROUND: Paricalcitol decreases iPTH and the frequency of secondary hyperparathyroidism (SHPT) after kidney transplantation. This proof-of-concept study aimed to assess the effect of paricalcitol on fibroblast growth factor-23/KLOTHO axis in renal transplants. METHODS: Twenty-nine subjects with SHPT received oral paricalcitol 1μg/day for 3 months, and 8 patients matched by age, sex, and creatinine clearance, but with iPTH < 100 pg/ml, were included as controls...
July 27, 2016: Transplantation
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