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https://www.readbyqxmd.com/read/29137111/effect-of-omega-3-fatty-acid-supplementation-on-plasma-fibroblast-growth-factor-23-levels-in-post-myocardial-infarction-patients-with-chronic-kidney-disease-the-alpha-omega-trial
#1
Martin H de Borst, Leandro C Baia, Ellen K Hoogeveen, Erik J Giltay, Gerjan Navis, Stephan J L Bakker, Johanna M Geleijnse, Daan Kromhout, Sabita S Soedamah-Muthu
Fibroblast growth factor 23 (FGF23) is an independent risk factor for cardiovascular mortality in chronic kidney disease. Omega-3 (n-3) fatty acid consumption has been inversely associated with FGF23 levels and with cardiovascular risk. We examined the effect of marine n-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and plant-derived alpha-linolenic acid (ALA) on plasma FGF23 levels in post-myocardial infarction patients with chronic kidney disease. In the randomized double-blind Alpha Omega Trial, 4837 patients with a history of myocardial infarction aged 60-80 years (81% men) were randomized to one of four trial margarines supplemented with a targeted additional intake of 400 mg/day EPA and DHA, 2 g/day ALA, EPA-DHA plus ALA, or placebo for 41 months...
November 11, 2017: Nutrients
https://www.readbyqxmd.com/read/29137107/effect-of-lanthanum-carbonate-on-coronary-artery-calcification-and-bone-mineral-density-in-maintenance-hemodialysis-patients-with-diabetes-complicated-with-adynamic-bone-disease-a-prospective-pilot-study
#2
Chunhua Zhang, Shixiang Wang, Sumei Zhao, Xiaodong Zhang
BACKGROUND: The incidence of adynamic bone disease (ABD) is increasing. Coronary artery calcification (CAC) may be severe in patients with ABD on maintenance hemodialysis (MHD). The aim of this study was to evaluate the effect of lanthanum carbonate (LC) on CAC and bone mineral density (BMD) in MHD patients with diabetes complicated with ABD. METHODS: A total of 92 MHD cases were divided into the calcium carbonate (CC) and LC groups. Primary outcome measure was the changes in the degree of CAC score (CACS) and BMD in forearm from baseline to 12 months...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29113983/fgf23-concentration-and-apol1-genotype-are-novel-predictors-of-mortality-in-african-americans-with-type-2-diabetes
#3
Gary C Chan, Jasmin Divers, Gregory B Russell, Carl D Langefeld, Lynne E Wagenknecht, Fang-Chi Hsu, Jianzhao Xu, S Carrie Smith, Nicholette D Palmer, Pamela J Hicks, Donald W Bowden, Thomas C Register, Lijun Ma, J Jeffrey Carr, Barry I Freedman
OBJECTIVE: Cardiovascular and renal complications contribute to higher mortality in patients with diabetes. We assessed novel and conventional predictors of mortality in African American-Diabetes Heart Study participants. RESEARCH DESIGN AND METHODS: Associations between mortality and subclinical atherosclerosis, urine albumin-to-creatinine ratio (UACR), estimated glomerular filtration rate (eGFR), plasma fibroblast growth factor 23 (FGF23) concentration, African ancestry proportion, and apolipoprotein L1 genotypes (APOL1) were assessed in 513 African Americans with type 2 diabetes; analyses were performed using Cox proportional hazards models...
November 7, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29098351/the-roles-of-genetic-factors-in-kawasaki-disease-a-systematic-review-and-meta-analysis-of-genetic-association-studies
#4
REVIEW
Xiaochuan Xie, Xiaohan Shi, Meilin Liu
This systematic review and meta-analysis aimed to better elucidate the roles of genetic factors in Kawasaki disease (KD), and determine the potential genetic biomarkers of KD. The systematic literature search of PubMed, Medline, Embase, Web of Science and CNKI identified 164 eligible studies. The qualitative synthesis revealed that 62 genes may be correlated with the susceptibility to KD, and 47 genes may be associated with the incidence of coronary artery lesions (CALs) in KD. A total of 53 polymorphisms in 34 genes were investigated in further quantitative synthesis...
November 2, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29096595/pleiotropic-actions-of-fgf23
#5
Reinhold G Erben
Fibroblast growth factor-23 (FGF23) is a bone-derived hormone, mainly produced by osteoblasts and osteocytes in response to increased extracellular phosphate and circulating vitamin D hormone. Endocrine FGF23 signaling requires co-expression of the ubiquitously expressed FGF receptor 1 (FGFR1) and the co-receptor α-Klotho (Klotho). In proximal renal tubules, FGF23 suppresses the membrane expression of the sodium-phosphate cotransporters Npt2a and Npt2c which mediate urinary reabsorption of filtered phosphate...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/29092060/evidence-for-bone-and-mineral-metabolism-alterations-in-children-with-autosomal-dominant-polycystic-kidney-disease
#6
Stéphanie De Rechter, Justine Bacchetta, Nathalie Godefroid, Laurence Dubourg, Pierre Cochat, Julie Maquet, Ann Raes, Jean De Schepper, Pieter Vermeersch, Maria Van Dyck, Elena Levtchenko, Patrick D'Haese, Pieter Evenepoel, Djalila Mekahli
Context: Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease. Hypophosphatemia was demonstrated in adult patients with preserved renal function, together with high fibroblast growth factor 23 (FGF23) and low soluble Klotho levels. The latter explained the relative FGF23 hyporesponsiveness in this cohort. Objective: Evaluating phosphate and bone mineral metabolism in children with ADPKD compared with what is known in adult ADPKD patients...
November 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29083055/hormonal-regulation-of-osteocyte-perilacunar-and-canalicular-remodeling-in-the-hyp-mouse-model-of-xlh
#7
Danielle Tokarz, Janaina S Martins, Elizabeth T Petit, Charles P Lin, Marie B Demay, Eva S Liu
Osteocytes remodel their surrounding perilacunar matrix and canalicular network to maintain skeletal homeostasis. Perilacunar/canalicular remodeling is also thought to play a role in determining bone quality. X-linked hypophosphatemia (XLH) is characterized by elevated serum fibroblast growth factor 23 (FGF23) levels, resulting in hypophosphatemia and decreased production of 1,25 dihydroxyvitamin D (1,25D). In addition to rickets and osteomalacia, long bones from mice with XLH (Hyp) have impaired whole bone biomechanical integrity accompanied by increased osteocyte apoptosis...
October 30, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29074819/continued-search-for-therapies-to-favorably-modify-phosphate-and-fgf23-levels-in-ckd
#8
EDITORIAL
Rupal Mehta, Tamara Isakova
No abstract text is available yet for this article.
October 26, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29074818/randomized-clinical-trial-of-sevelamer-carbonate-on-serum-klotho-and-fibroblast-growth-factor-23-in-ckd
#9
Sophie Liabeuf, Jean-Philippe Ryckelynck, Najeh El Esper, Pablo Ureña, Christian Combe, Bertrand Dussol, Denis Fouque, Philippe Vanhille, Luc Frimat, Eric Thervet, Romuald Mentaverri, Dominique Prié, Gabriel Choukroun
BACKGROUND AND OBJECTIVES: Epidemiologic studies suggest that higher serum phosphaturic hormone fibroblast growth factor 23 levels are associated with increase morbidity and mortality. The aim of the FGF23 Reduction Efficacy of a New Phosphate Binder in CKD Trial was to evaluate the effect of sevelamer carbonate on serum C-terminal fibroblast growth factor 23 levels in normophosphatemic patients with CKD stage 3b/4. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Patients with CKD, eGFR between 45 and 15 ml/min per 1...
October 26, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29074091/fibroblast-growth-factor-23-in-patients-with-acute-dyspnea-data-from-the-akershus-cardiac-examination-ace-2-study
#10
Magnus Nakrem Lyngbakken, Mohammad Osman Pervez, Jon Brynildsen, Marit Holmefjord Pedersen, Janne Sølvernes, Geir Christensen, Arne Didrik Høiseth, Torbjørn Omland, Helge Røsjø
BACKGROUND: Circulating fibroblast growth factor 23 (FGF23) concentrations have been linked to left ventricular remodeling and unfavorable cardiovascular outcomes, but whether FGF23 is associated with heart failure (HF) diagnosis and outcome in unselected patients with dyspnea is unknown. Accordingly, we assessed the diagnostic and prognostic properties of FGF23 in patients presenting to the emergency department with acute dyspnea. METHODS AND RESULTS: FGF23 was measured in 314 patients admitted with acute dyspnea and the diagnostic and prognostic merit was compared to that of N-terminal pro-B-type natriuretic peptide (NT-proBNP)...
October 24, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/29073196/fgf23-expression-in-rodents-is-directly-induced-via-erythropoietin-after-inhibition-of-hypoxia-inducible-factor-proline-hydroxylase
#11
Ingo Flamme, Peter Ellinghaus, Diana Urrego, Thilo Krüger
Plasma levels of FGF23 are increased in patients with chronic kidney disease. Beside its role in phosphate homeostasis, iron deficiency and anemia are associated with increased FGF23 plasma levels. Recently, FGF23 plasma levels were shown to be increased in mice after treatment with hypoxia inducible factor-proline hydroxylase (HIF-PH) inhibitors which are strong inducers of erythropoietin and erythropoiesis and are known to modulate iron uptake and availability. Therefore we investigated a potential context between expression of FGF23 and stimulation of erythropoiesis using a HIF-PH inhibitor and erythropoietin in rats...
2017: PloS One
https://www.readbyqxmd.com/read/29063524/on-the-relationship-between-proteinuria-and-plasma-phosphate
#12
Sophie de Seigneux, Alexandra Wilhelm-Bals, Marie Courbebaisse
Albuminuria is strongly associated with renal and cardiovascular outcomes independently of renal function level. However, the pathophysiology of these associations is debated. In chronic kidney disease (CKD), phosphate retention participates in cardiovascular events and increased cardiovascular mortality. We hypothesised that albuminuria may modulate tubular phosphate handling by the kidney. To verify this hypothesis, we first studied the association between phosphataemia and albuminuria in children with nephrotic syndrome and in adults with CKD...
October 24, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29063159/fibroblast-growth-factor-fgf-23-regulates-the-plasma-levels-of-parathyroid-hormone-in-vivo-through-the-fgf-receptor-in-normocalcemia-but-not-in-hypocalcemia
#13
Maria L Mace, Eva Gravesen, Anders Nordholm, Klaus Olgaard, Ewa Lewin
The calcium and phosphate homeostasis is regulated by a complex interplay between parathyroid hormone (PTH), fibroblast growth factor 23 (FGF23), and calcitriol. Experimental studies have demonstrated an inhibitory effect of FG23 on PTH production and secretion; the physiological role of this regulation is however not well understood. Surprisingly, in uremia, concomitantly elevated FGF23 and PTH levels are observed. The parathyroid gland rapidly loses its responsiveness to extracellular calcium in vitro and a functional parathyroid cell line has currently not been established...
October 23, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29061648/plasma-s-klotho-is-related-to-kidney-function-and-predicts-adverse-renal-outcomes-in-patients-with-advanced-chronic-kidney-disease
#14
Qi-Feng Liu, Jian-Ming Ye, Li-Xia Yu, Ao-Lin He, Qiang Sun, Da-Wei He, Sha-Sha Li
To investigate whether the soluble Klotho (s-Klotho) level in patients with chronic kidney disease (CKD) is related to kidney function and whether a low s-Klotho level can predict adverse renal outcomes or CKD progression in patients with advanced CKD. 112 patients with CKD stages 3-5 and 30 healthy volunteers were enrolled. Blood samples were collected to measure serum creatinine, calcium, phosphorus, intact parathyroid hormone, and hemoglobin. s-Klotho and fibroblast growth factor 23 (FGF23) were determined by ELISA...
October 23, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/29057976/analyzing-homoeolog-expression-provides-insights-into-the-rediploidization-event-in-gynogenetic-hybrids-of-carassius-auratus-red-var-%C3%A2-%C3%A3-%C3%A2-cyprinus-carpio
#15
Li Ren, Jialin Cui, Jing Wang, Hui Tan, Wuhui Li, Chenchen Tang, Qinbo Qin, Shaojun Liu
Rediploidization is considered to be a part of the evolutionary history of allotetraploids, and resulted in the emergence of novel epigenetic regulatory activities. To study the changing patterns of gene expression following the reduction of a genome by 50%, we used RNA-seq and quantitative real-time PCR (qPCR) to investigate total gene expression and homoeolog expression in three hybrids of a C. auratus red var. (2n = 100, ♀) (R) and C. carpio (2n = 100, ♂) (C) (i.e., F1, F18, and G4) and their original parents...
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29056164/adam17-a-new-player-in-the-pathogenesis-of-chronic-kidney-disease-mineral-and-bone-disorder
#16
Alessandra F Perna, Alessandra Pizza, Annarita Di Nunzio, Rocco Bellantone, Marco Raffaelli, Tommaso Cicchella, Giovanni Conzo, Luigi Santini, Miriam Zacchia, Francesco Trepiccione, Diego Ingrosso
The triad composed by α-Klotho, fibroblast growth factor-23, and its receptor are involved in the pathogenesis of chronic kidney disease-mineral and bone disorder. A disintegrin and metalloproteinase 17 (ADAM17) is a metalloproteinase causing the proteolytic shedding of α-Klotho from the cell membrane, and its role in chronic kidney disease-mineral and bone disorder is not yet known. We studied the circulating levels of the above-mentioned mediators in patients with secondary hyperparathyroidism due to uremia, compared to control subjects, as well as in patients with primary hyperparathyroidism...
November 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29043208/phosphaturic-mesenchymal-tumor-pmt-exceptionally-rare-disease-yet-crucial-not-to-miss
#17
Amir Ghorbani-Aghbolaghi, Morgan Angus Darrow, Tao Wang
Phosphaturic mesenchymal tumors (PMTs) are very rare tumors which are frequently associated with Tumor Induced Osteomalacia (TIO), a paraneoplastic syndrome that manifests as renal phosphate wasting. The tumor cells produce a peptide hormone-like substance known as fibroblast growth factor 23 (FGF23), a physiologic regulator of phosphate levels. FGF23 decreases proximal tubule reabsorption of phosphates and inhibits 1-α-hydroxylase, which reduces levels of 1-α, 25-dihydroxyvitamine D3. Thus, overexpression of FGF23 by the tumor cells leads to increased excretion of phosphate in the urine, mobilization of calcium and phosphate from bones, and the reduction of osteoblastic activity, ultimately resulting in widespread osteomalacia...
July 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/29043081/effects-of-phospho-and-calciotropic-hormones-on-electrolyte-transport-in-the-proximal-tubule
#18
REVIEW
Justin J Lee, Allein Plain, Megan R Beggs, Henrik Dimke, R Todd Alexander
Calcium and phosphate are critical for a myriad of physiological and cellular processes within the organism. Consequently, plasma levels of calcium and phosphate are tightly regulated. This occurs through the combined effects of the phospho- and calciotropic hormones, parathyroid hormone (PTH), active vitamin D 3, and fibroblast growth factor 23 (FGF23). The organs central to this are the kidneys, intestine, and bone. In the kidney, the proximal tubule reabsorbs the majority of filtered calcium and phosphate, which amounts to more than 60% and 90%, respectively...
2017: F1000Research
https://www.readbyqxmd.com/read/29038882/etelcalcetide-a-novel-calcimimetic-prevents-vascular-calcification-in-a-rat-model-of-renal-insufficiency-with-secondary-hyperparathyroidism
#19
Longchuan Yu, James E Tomlinson, Shawn T Alexander, Kelly Hensley, Chun-Ya Han, Denise Dwyer, Marina Stolina, Charles Dean, William G Goodman, William G Richards, Xiaodong Li
Etelcalcetide, a novel peptide agonist of the calcium-sensing receptor, prevents vascular calcification in a rat model of renal insufficiency with secondary hyperparathyroidism. Vascular calcification occurs frequently in patients with chronic kidney disease (CKD) and is a consequence of impaired mineral homeostasis and secondary hyperparathyroidism (SHPT). Etelcalcetide substantially lowers parathyroid hormone (PTH) and fibroblast growth factor-23 (FGF23) levels in SHPT patients on hemodialysis. This study compared the effects of etelcalcetide and paricalcitol on vascular calcification in rats with adenine-induced CKD and SHPT...
December 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29029193/sex-and-iron-modify-fibroblast-growth-factor-23-fgf23-concentration-in-1-year-old-children
#20
Elisa Holmlund-Suila, Maria Enlund-Cerullo, Saara Valkama, Helena Hauta-Alus, Jenni Rosendahl, Otto Helve, Timo Hytinantti, Heli Viljakainen, Sture Andersson, Outi Mäkitie
Context: Fibroblast growth factor 23 (FGF23) plays an important role in phosphate homeostasis but its regulation is inadequately characterized. Objective: To examine regulators of FGF23, especially sex and iron status, in early childhood. Design: A cross-sectional study involving 1-year-old children. Setting and participants: Healthy term infants with a birth weight appropriate for gestational age were recruited to an ongoing vitamin D trial at the Kätilöopisto Maternity Hospital, Helsinki, Finland...
October 5, 2017: Journal of Clinical Endocrinology and Metabolism
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