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fibroblast growth factor 23

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https://www.readbyqxmd.com/read/29156056/high-doses-of-cholecalciferol-alleviate-the-progression-of-hyperparathyroidism-in-patients-with-ckd-stages-3-4-results-of-a-12-week-double-blind-randomized-controlled-study
#1
Per-Anton Westerberg, Gunnar Sterner, Östen Ljunggren, Elin Isaksson, Fjölnir Elvarson, Hamid Dezfoolian, Torbjörn Linde
Background: Calcidiol insufficiency may accelerate the development of secondary hyperparathyroidism (SHPT). We tested the effect of a substantial increase in calcidiol on mineral metabolism in patients with chronic kidney disease (CKD). Methods: Ninety-five patients with CKD Stages 3-4, parathyroid hormone (PTH) above 6.8 pmol/L and calcidiol below 75 nmol/L were randomized to receive either cholecalciferol 8000 IU/day or placebo for 12 weeks. The primary endpoint was difference in the mean change in iPTH after 12 weeks...
May 30, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29151454/changes-in-serum-fibroblast-growth-factor-23-in-patients-with-acute-myocardial-infarction
#2
Hideaki Takahashi, Michishige Ozeki, Tomohiro Fujisaka, Hideaki Morita, Shu-Ichi Fujita, Yoshihiro Takeda, Kensaku Shibata, Koichi Sohmiya, Masaaki Hoshiga, Junko Tamaki, Nobukazu Ishizaka
BACKGROUND: Fibroblast growth factor 23 (FGF23) induces cardiac remodeling. We investigated the changes in serum FGF23 levels in patients diagnosed with acute myocardial infarction (AMI).Methods and Results:A total of 44 patients diagnosed with AMI were included in the current study. All patients underwent emergency percutaneous coronary intervention (PCI). The median of peak creatine kinase (CK) and CKMB values was 1,816 U/L and 159 U/L, respectively. Serum levels of FGF23, calcium, and inorganic phosphate (iP) were measured before PCI, and on days 1, 3, 5, 7 after PCI...
November 18, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29149966/seasonal-variation-of-vitamin-d-status-in-long-term-kidney-transplant-recipients
#3
J Wilimborek, M Nowicki, I Kurnatowska
BACKGROUND: There is little information about circannual rhythm of vitamin D level in kidney transplantation (KTx) patients. MATERIAL AND METHODS: In 71 patients (27 females; 44 males) in the long term after KTx (5.5 ± 2.6 years) during the winter and summer months plasma concentration of 25-hydroxyvitamin D (25(OH)D), 1,25-hydroxyvitamin D, parathormone (PTH), fibroblast growth factor 23 (FGF-23), calcium, and phosphorus were assessed. Vitamin D status was classified according to 25(OH)D level (ie, insufficiency, ≤30 ng/mL; deficiency, <15 ng/mL)...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29147074/increased-levels-of-srage-in-diabetic-ckd-g5d-patients-a-potential-protective-mechanism-against-age-related-upregulation-of-fibroblast-growth-factor-23-and-inflammation
#4
Elena Dozio, Valentina Corradi, Elena Vianello, Elisa Scalzotto, Massimo de Cal, Massimiliano Marco Corsi Romanelli, Claudio Ronco
Advanced glycation end products (AGEs) may induce cardiac remodeling in kidney disease by promoting fibroblast growth factor 23 (FGF-23) expression. Since AGEs are increased in diabetes mellitus (DM), our first aim was to evaluate the existence of any potential association between AGEs, FGF-23, inflammation, and increased cardiovascular risk in DM patients on dialysis (CKD-G5D). Secondarily, we explored the potential role of the soluble receptor for AGEs (sRAGE) as a marker of heart failure. Levels of glycated albumin (GA), sRAGE, c-terminal FGF-23 (cFGF-23), brain natriuretic peptide (BNP), and inflammatory mediators were compared between DM and non-DM CKD-G5D patients...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29143140/impact-of-conventional-medical-therapy-on-bone-mineral-density-and-bone-turnover-in-adult-patients-with-x-linked-hypophosphatemia-a-6-year-prospective-cohort-study
#5
Vikram Vinod Shanbhogue, Stinus Hansen, Niklas Rye Jørgensen, Signe Sparre Beck-Nielsen
X-linked hypophosphatemia (XLH) is a rare, inheritable disorder manifesting as rickets in children and osteomalacia in adults. While conventional medical treatment with oral phosphate and alfacalcidol is recommended in childhood, it is undecided whether adults should continue therapy. The aim of this 6-year prospective study was to determine the impact of conventional medical treatment on areal bone mineral density (aBMD), bone turnover markers (BTMs) and measures of calcium homeostasis in 27 adult patients with XLH, 11 of whom received medical treatment...
November 15, 2017: Calcified Tissue International
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
#6
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/29113983/fgf23-concentration-and-apol1-genotype-are-novel-predictors-of-mortality-in-african-americans-with-type-2-diabetes
#7
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/29096595/pleiotropic-actions-of-fgf23
#8
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
#9
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-x-linked-hypophosphatemia
#10
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/29074818/randomized-clinical-trial-of-sevelamer-carbonate-on-serum-klotho-and-fibroblast-growth-factor-23-in-ckd
#11
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
#12
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/29072386/-genetic-disorders-of-renal-phosphate-handling
#13
REVIEW
Daniella Magen
Hereditary disorders of renal phosphate handling comprise a diverse group of genetic diseases, usually characterized by excessive urinary phosphate wasting and a negative phosphate balance. In the minority of cases, perturbations of renal phosphate handling are associated with excessive urinary phosphate reabsorption, leading to pathological hyperphosphatemia. Inorganic phosphate is an essential mineral in the human body, playing a crucial role in cellular metabolism and skeletal mineralization. Whole body phosphate balance is maintained by a highly controlled equilibrium between intestinal uptake, skeletal deposition and renal excretion...
October 2017: Harefuah
https://www.readbyqxmd.com/read/29063524/on-the-relationship-between-proteinuria-and-plasma-phosphate
#14
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
#15
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
#16
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/29059154/fibroblast-growth-factor-13-regulates-glioma-cell-invasion-and-is-important-for-bevacizumab-induced-glioma-invasion
#17
Y Otani, T Ichikawa, K Kurozumi, S Inoue, J Ishida, T Oka, T Shimizu, Y Tomita, Y Hattori, A Uneda, Y Matsumoto, H Michiue, I Date
Glioblastoma has the poorest prognosis, and is characterized by excessive invasion and angiogenesis. To determine the invasive mechanisms, we previously used two glioma cell lines (J3T-1 and J3T-2) with different invasive phenotypes. The J3T-1 showed abundant angiogenesis and tumor cell invasion around neovasculature, while J3T-2 showed diffuse cell infiltration into surrounding healthy parenchyma. Microarray analyses were used to identify invasion-related genes in J3T-2 cells, and the expressed genes and their intracellular and intratumoral distribution patterns were evaluated in J3T-2 cell lines, human glioma cell lines, human glioblastoma stem cells and human glioblastoma specimens...
October 23, 2017: Oncogene
https://www.readbyqxmd.com/read/29058057/effects-of-lanthanum-carbonate-on-coronary-artery-calcification-and-cardiac-abnormalities-after-initiating-hemodialysis
#18
Hideki Fujii, Keiji Kono, Kentaro Nakai, Shunsuke Goto, Tatsuya Nishii, Atsushi Kono, Shinichi Nishi
It is known that calcium-containing phosphate binders are more closely associated with the progression of vascular calcification than non-calcium-containing phosphate binders. In this study, we investigated the effect of the non-calcium-containing phosphate binder, lanthanum carbonate on the progression of coronary artery calcification and cardiovascular abnormalities compared to that of calcium-containing phosphate binder in chronic kidney disease patients during the early period after initiating hemodialysis...
October 20, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/29056164/adam17-a-new-player-in-the-pathogenesis-of-chronic-kidney-disease-mineral-and-bone-disorder
#19
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/29050900/bone-and-mineral-disorders-in-chronic-kidney-disease-implications-for-cardiovascular-health-and-ageing-in-the-general-population
#20
REVIEW
Adrian Covic, Marc Vervloet, Ziad A Massy, Pablo Ureña Torres, David Goldsmith, Vincent Brandenburg, Sandro Mazzaferro, Pieter Evenepoel, Jordi Bover, Mugurel Apetrii, Mario Cozzolino
The patient with chronic kidney disease (CKD) represents an extreme model for arteriosclerosis, vascular calcification, and bone disorders, all of which are also associated with ageing in the general population. These pathological features are also relevant to other common chronic health disorders such as diabetes, and chronic inflammatory and cardiovascular diseases. Although management and interventions for these major risk factors are now incorporated into most public health guidelines (eg, smoking cessation and control of bodyweight and blood pressure, as well as glucose and cholesterol concentrations), some residual cardiovascular risk is not reduced by implementation of these interventions...
October 16, 2017: Lancet Diabetes & Endocrinology
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