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https://www.readbyqxmd.com/read/28230890/effect-of-testosterone-replacement-therapy-on-vitamin-d-and-fgf-23-levels-in-congenital-hypogonadism
#1
Cem Haymana, Alper Sonmez, Aydogan Aydogdu, Serkan Tapan, Yalcin Basaran, Coskun Meric, Kamil Baskoy, Abdullah Taslipinar, Mahmut Ilker Yilmaz, Omer Azal
INTRODUCTION: Patients with hypogonadism are at increased risk of cardiac and metabolic diseases and osteoporosis. Vitamin D and Fibroblast growth factor-23 (FGF-23) play role in the regulation of bone mineral metabolism and endothelial functions. Low vitamin D levels are reported in hypogonadism, while there is no data about the effect of testosterone replacement therapy (TRT). We investigated the effect of TRT on vitamin D and FGF-23 levels along with endothelial functions and insulin resistance in hypogonadal patients...
February 23, 2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28222921/relationships-between-left-ventricular-structure-and-function-according-to-cardiac-mri-and-cardiac-biomarkers-in-end-stage-renal-disease
#2
Bryan A Ross, Ron Wald, Marc B Goldstein, Darren A Yuen, Jonathon Leipsic, Mercedeh Kiaii, Andrea Rathe, Djeven P Deva, Anish Kirpalani, Olugbenga O Bello, John J Graham, Howard Leong-Poi, Kim A Connelly, Andrew T Yan
BACKGROUND: We sought to assess the relationships between left ventricular (LV) remodelling and the mechanical and uremic stressors in hemodialysis patients. METHODS: In this prospective 2-centre cohort study, 67 prevalent hemodialysis patients were followed for 1 year. Data on routine bloodwork and predialysis blood pressure (BP) measurements were collected over a 12-week period. LV end-diastolic volume (LVEDV) and LV mass (LVM) were measured using cardiac magnetic resonance imaging and indexed...
December 3, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28186657/association-of-vitamin-d-metabolites-with-parathyroid-hormone-fibroblast-growth-factor-23-calcium-and-phosphorus-in-dogs-with-various-stages-of-chronic-kidney-disease
#3
V J Parker, L M Harjes, K Dembek, G S Young, D J Chew, R E Toribio
BACKGROUND: Hypovitaminosis D is associated with progression of renal disease, development of renal secondary hyperparathyroidism (RHPT), chronic kidney disease-mineral bone disorder (CKD-MBD), and increased mortality in people with CKD. Despite what is known regarding vitamin D dysregulation in humans with CKD, little is known about vitamin D metabolism in dogs with CKD. OBJECTIVES: The purpose of our study was to further elucidate vitamin D status in dogs with different stages of CKD and to relate it to factors that affect the development of CKD-MBD, including parathyroid hormone (PTH), fibroblast growth factor-23 (FGF-23), calcium, and phosphorus concentrations...
February 10, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28182071/fibroblast-growth-factor-23-levels-in-maintenance-hemodialysis-patients-in-india
#4
U Anandh, P Mandavkar, B Das, S Rao
Fibroblast growth factor-23 (FGF-23) levels start rising early in patients with chronic kidney disease and is implicated in cardiovascular and overall mortality of hemodialysis patients. We conducted a prospective observational cohort study in stable dialysis patients looking into the levels of FGF-23 in hemodialysis patients and its association with various demographic and biochemical variables and mortality. A total of 91 patients were enrolled in the study. The mean FGF-23 levels were very high (1152.7 pg/ml)...
January 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28181822/oncogenic-osteomalacia-role-of-ga-68-dotanoc-pet-ct-scan-in-identifying-the-culprit-lesion-and-its-management
#5
Deepa Singh, Mudalsha Ravina, Narvesh Kumar, Veeresh Dube, Utham Kumar K, Manish Dixit, Sanjay Gambhir
OBJECTIVES: The aim of this study was to evaluate role of (68)Ga-DOTANOC PET/CT scan in localization of culprit lesion for biopsy and required intervention (surgical excision/radiofrequency ablation) in patients with long standing oncogenic osteomalacia (OOM)/tumor induced osteomalacia (TIO). METHODS: 17 patients (08 male & 09 female) underwent (68)Ga-DOTANOC PET/CT scan. The patients referred with clinical and biochemical evidence of hypophosphatemia and raised Fibroblast Growth Factor-23 (FGF-23)...
February 9, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28173916/effect-of-mineral-and-bone-metabolism-on-restless-legs-syndrome-in-hemodialysis-patients
#6
Precil D M M Neves, Fabiana G Graciolli, Ivone B Oliveira, Ramaiane A Bridi, Rosa M A Moysés, Rosilene M Elias
STUDY OBJECTIVES: Restless legs syndrome (RLS) is a highly prevalent sleep disease among patients on hemodialysis. The physiopathology is still unclear, and may be multifactorial. Because of the association between iron metabolism and chronic kidney disease-mineral and bone disorders (CKD-MBD), we hypothesized that both factors would be associated with RLS. METHODS: We have evaluated hemodialysis patients, in a face-to-face interview for the diagnosis and severity of RLS, as measured by the International Restless Legs Syndrome Study Group...
January 15, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28164555/continuous-hemodiafiltration-with-an-an69st-hemofilter-an69st-chdf-as-fgf-23-lowering-therapy
#7
Masafumi Yamato, Yusuke Minematsu, Yuta Ikemiya, Junichi Shibata, Junya Fujii, Takumi Minato, Sachie Miyagawa, Kaori Takaori, Yoko Tomiyama, Ikue Nagayama, Akira Wada, Takahito Ito, Hirotsugu Iwatani
BACKGROUND: Recent studies have shown that fibroblast growth factor-23 (FGF-23) is elevated not only in chronic kidney disease (CKD), but also in acute illnesses such as acute kidney injury, septic shock, and acute heart failure. FGF-23 would be not only a simple biomarker but also a direct toxic factor in acute illness. Therefore, lowering circulating FGF-23 levels in clinical practice would be an exciting and valuable interventional strategy. Continuous hemodiafiltration (CHDF) is often performed for the treatment of the aforementioned acute illnesses...
December 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28157067/serum-klotho-levels-in-acute-kidney-injury%C3%A2
#8
Eric Seibert, Daniel Radler, Christof Ulrich, Sylvia Hanika, Roman Fiedler, Matthias Girndt
AIMS: Klotho is a co-receptor for FGF-23 and key regulator of phosphate excretion. Soluble klotho modulates ion-channel expression and growth factor sensitivity. In chronic kidney disease (CKD), impaired klotho expression has been demonstrated. Likewise, reduced soluble klotho levels in serum and urine have been established in rodents in experimental acute kidney injury (AKI). In contrast, no data on soluble serum klotho levels in human AKI has been presented to date. MATERIAL AND METHODS: A cross-sectional case-control study of klotho serum levels in 30 subjects with AKI and 126 control subjects with kidney functions ranging from normal to end-stage renal disease (ESRD)...
February 3, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28130714/the-effect-of-nephrectomy-on-klotho-fgf-23-and-bone-metabolism
#9
Katarzyna Kakareko, Alicja Rydzewska-Rosolowska, Szymon Brzosko, Joanna Gozdzikiewicz-Lapinska, Ewa Koc-Zorawska, Pawel Samocik, Robert Kozlowski, Michal Mysliwiec, Beata Naumnik, Tomasz Hryszko
BACKGROUND: Increased concentration of fibroblast growth factor 23 (FGF-23) and decreased levels of soluble Klotho (sKL) are linked to negative clinical outcomes among patients with chronic kidney disease and acute kidney injury. Therefore, it is reasonable to hypothesize that GFR reduction caused by nephrectomy might alter mineral metabolism and induces adverse consequences. Whether nephrectomy due to urological indications causes derangements in FGF-23 and sKL has not been studied. The aim of the study was to evaluate the effect of acute GFR decline due to unilateral nephrectomy on bone metabolism, FGF-23 and sKL levels...
January 27, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28123260/musculoskeletal-oncogenic-osteomalacia-an-experience-from-a-single-centre-in-south-india
#10
Anil Satyaraddi, Kripa Elizabeth Cherian, Sahana Shetty, Nitin Kapoor, Felix K Jebasingh, Vinoo Mathew Cherian, Julie Hephzibah, Anne Jennifer Prabhu, Nihal Thomas, Thomas V Paul
BACKGROUND: Oncogenic osteomalacia is an acquired form of hypophosphatemic osteomalacia where the tumour resection may lead to cure of the disease. Tumours originating from the musculoskeletal region form an important subgroup of oncogenic osteomalacia. METHODS: This was a retrospective study conducted at a tertiary care centre in south India where we analyzed the hospital records of all the patients with musculoskeletal oncogenic osteomalacia from January 2010-April 2016...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28120476/mineral-adaptations-following-kidney-transplantation
#11
Sven-Jean Tan, Amy Crosthwaite, David Langsford, Varuni Obeysekere, Frank L Ierino, Matthew A Roberts, Peter D Hughes, Tim D Hewitson, Karen M Dwyer, Nigel D Toussaint
BACKGROUND: Klotho is predominantly expressed in the kidney and reported to have anti-oxidant and anti-fibrotic properties. Soluble-Klotho (sKl), the circulating protein cleaved from membrane-bound Klotho, is reduced significantly with kidney disease and inversely associated with mortality. sKl has not been thoroughly evaluated prospectively after kidney transplantation. METHODS: Incident kidney transplant recipients (KTRs) were prospectively evaluated pre-transplantation, 1-week, 12-weeks and 52-weeks post-transplantation...
January 25, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28098103/relation-of-fibroblast-growth-factor-23-and-cardiovascular-calcification-in-end-stage-kidney-disease-patients-on-regular-hemodialysis
#12
Tarek Zakaria El Baz, Osama Ahmed Khamis, Osama Ashry Ahmed Gheith, Salama Saad Abd Ellateif, Abdallah Mahmoud Abdallah, Hussein Chahine Abd El Aal
More than half of deaths in end-stage kidney disease (ESKD) patients are due to cardiovascular disease. Elevated fibroblast growth factor 23 (FGF-23) was found to be associated with mortality in hemodialysis (HD) patients and correlates with peripheral calcification. Aortic calcification is associated with coronary artery calcification. Both aortic and peripheral vascular calcifications were associated with mortality in chronic kidney disease. We aimed to investigate the relation between intact FGF-23 and cardiovascular calcification in patients with ESKD who were maintained on regular HD...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28095739/expression-and-localization-of-fibroblast-growth-factor-fgf-23-and-klotho-in-the-spleen-its-physiological-and-functional-implications
#13
Yuri Nakashima, Toru Mima, Mitsuru Yashiro, Tomohiro Sonou, Masaki Ohya, Asuka Masumoto, Shintaro Yamanaka, Daisuke Koreeda, Koichi Tatsuta, Yoshiyuki Hanba, Mari Moribata, Shigeo Negi, Takashi Shigematsu
The FGF23-Klotho signaling axis is known to exert anti-aging effects via calcium-phosphorus metabolism. In mice deficient in FGF23-Klotho signaling, however, the number of splenocytes is reduced. FGF23 is expressed in both bone and spleen, with regulation of its production differing in these organs. As FGF23-Klotho signaling may play an immunological role in the spleen, splenocytes in male C57BL/6J mice were assayed for expression of Klotho or FGF23 by flow cytometry and immunohistochemistry. Cells that expressed Klotho included CD45R/B220(+) CD21/CD35(+) CD1d(+) CD43(-) marginal zone B cells...
January 18, 2017: Growth Factors
https://www.readbyqxmd.com/read/28039046/bone-quality-assessment-as-measured-by-trabecular-bone-score-in-patients-with-end-stage-renal-disease-on-dialysis
#14
Maria P Yavropoulou, Vasilios Vaios, Maria Pikilidou, Ioannis Chryssogonidis, Melina Sachinidou, Symeon Tournis, Konstantinos Makris, Kalliopi Kotsa, Michalis Daniilidis, Afroditi Haritanti, Vassilios Liakopoulos
Patients with end-stage renal disease (ESRD) on maintenance hemodialysis (HD) exhibit osteoporosis and increased fracture risk. Dual-energy X-ray absorptiometry scan measurements and calculation of fracture risk assessment toll score underestimate fracture risk in these patients and do not estimate bone quality. Trabecular bone score (TBS) has been recently proposed as an indirect measure of bone microarchitecture. In this study, we investigated alterations of bone quality in patients with ESRD on HD, using TBS...
December 27, 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28027796/associations-of-serum-fibroblast-growth-factor-23-levels-with-obesity-and-visceral-fat-accumulation
#15
Xiang Hu, Xiaojing Ma, Yuqi Luo, Yiting Xu, Qin Xiong, Xiaoping Pan, Yunfeng Xiao, Yuqian Bao, Weiping Jia
BACKGROUND & AIMS: Recent findings raise the possibility that fibroblast growth factor (FGF) 23 may be related with fat contents and distribution. The present study aimed to elucidate the associations of serum FGF23 levels with the fat contents and distribution. METHODS: A total of 1599 normoglycemic individuals with preserved kidney function were enrolled. Serum levels of intact FGF23 were detected using a sandwich enzyme-linked immunosorbent assay. Overweight/obesity was defined by a body mass index of ≥25...
December 18, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27981393/hyperparathyroidism-and-increased-fractional-excretion-of-phosphate-predict-allograft-loss-in-long-term-kidney-transplant-recipients
#16
Sumanee Prakobsuk, Supinda Sirilak, Kotcharat Vipattawat, Pahnwat T Taweesedt, Vasant Sumethkul, Surasak Kantachuvesiri, Sinee Disthabanchong
BACKGROUND: After kidney transplantation, fibroblast growth factor-23 (FGF-23) normally returns to baseline within 1 year whereas hyperparathyroidism persists in most kidney transplant (KT) recipients. As a result, serum phosphate remains relatively low in association with increased serum calcium and urinary phosphate excretion when compared to chronic kidney disease patients. The relationship between mineral metabolism and outcomes in long-term KT recipients has not been extensively studied...
December 16, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27979879/fibroblast-growth-factor-23-as-novel-biomarker-for-early-risk-stratification-after-st-elevation-myocardial-infarction
#17
Martin Reindl, Sebastian Johannes Reinstadler, Hans-Josef Feistritzer, Lukas Mueller, Constantin Koch, Agnes Mayr, Markus Theurl, Rudolf Kirchmair, Gert Klug, Bernhard Metzler
OBJECTIVE: Adverse left ventricular (LV) remodelling is the major determinant of heart failure and mortality in survivors of ST-elevation myocardial infarction (STEMI). The role of fibroblast growth factor 23 (FGF-23) for LV remodelling prediction after STEMI is unknown. We therefore aimed to investigate the relation between circulating FGF-23 and LV remodelling following revascularised STEMI. METHODS: In this prospective observational study, we included 88 consecutive patients with STEMI treated by primary percutaneous coronary intervention...
December 15, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27923912/erratum-for-the-research-article-a-computationally-identified-compound-antagonizes-excess-fgf-23-signaling-in-renal-tubules-and-a-mouse-model-of-hypophosphatemia-by-z-xiao-d-riccardi-h-a-velazquez-a-l-chin-c-r-yates-j-d-carrick-j-c-smith-j-baudry-l-d-quarles
#18
https://www.readbyqxmd.com/read/27907058/choice-of-high-dose-intravenous-iron-preparation-determines-hypophosphatemia-risk
#19
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/27879395/a-computationally-identified-compound-antagonizes-excess-fgf-23-signaling-in-renal-tubules-and-a-mouse-model-of-hypophosphatemia
#20
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
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