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https://www.readbyqxmd.com/read/29442350/occult-phosphaturic-mesenchymal-tumor-of-femur-cortex-causing-oncogenic-osteomalacia-diagnostic-challenges-and-clinical-outcomes
#1
Deep Dutta, Raghuvansh Kumar Pandey, Rakhee Gogoi, Nagender Solanki, Renu Madan, Anupam Mondal, Shruti Dogra, Pradeep Thapa
BACKGROUND: Tumor induced osteomalacia (TIO) are extremely rare paraneoplastic syndrome with less than 300 reported cases. This report highlights the pitfalls and challenges in diagnosing and localizing TIO in patients with refractory and resistant osteomalacia. PATIENT AND METHODS: 41- year gentleman with 4-year history of musculoskeletal weakness and pathologic fractures presented in wheelchair bound incapacitated state of 1-year duration. Investigations were significant for severe hypophosphatemia, severe phosphaturia, normal serum calcium, reduced 1,25-dihydroxy vitamin-D, elevated ALP, elevated intact parathyroid hormone (iPTH), and pseudo-fractures involving pelvis and bilateral femur...
February 14, 2018: Endokrynologia Polska
https://www.readbyqxmd.com/read/29440923/managing-hyperparathyroidism-in-hemodialysis-role-of-etelcalcetide
#2
REVIEW
Keith E Eidman, James B Wetmore
Secondary hyperparathyroidism (SHPT) is common in patients receiving maintenance hemodialysis and is associated with adverse outcomes. Currently, SHPT is managed by reducing circulating levels of phosphate with oral binders and parathyroid hormone (PTH) with vitamin D analogs and/or the calcimimetic cinacalcet. Etelcalcetide, a novel calcimimetic administered intravenously (IV) at the end of a hemodialysis treatment session, effectively reduces PTH in clinical trials when given thrice weekly. Additional clinical effects include reductions in circulating levels of phosphate and FGF-23 and an improved profile of markers of bone turnover...
2018: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/29425341/fibroblast-growth-factor-23-is-induced-by-an-activated-renin-angiotensin-aldosterone-system-in-cardiac-myocytes-and-promotes-the-pro-fibrotic-crosstalk-between-cardiac-myocytes-and-fibroblasts
#3
Maren Leifheit-Nestler, Felix Kirchhoff, Julia Nespor, Beatrice Richter, Birga Soetje, Michael Klintschar, Joerg Heineke, Dieter Haffner
Background: Fibroblast growth factor 23 (FGF23) is discussed as a new biomarker of cardiac hypertrophy and mortality in patients with and without chronic kidney disease (CKD). We previously demonstrated that FGF23 is expressed by cardiac myocytes, enhanced in CKD and induces cardiac hypertrophy via activation of FGF receptor 4 independent of its co-receptor klotho. The impact of FGF23 on cardiac fibrosis is largely unknown. Methods: By conducting a retrospective case-control study including myocardial autopsy samples from 24 patients with end-stage CKD and in vitro studies in cardiac fibroblasts and myocytes, we investigated the pro-fibrotic properties of FGF23...
February 7, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29394451/pth-vitamin-d-and-the-fgf-23-klotho-axis-and-heart-going-beyond-the-confines-of-nephrology
#4
REVIEW
José Alberto Navarro-García, María Fernández-Velasco, Carmen Delgado, Juan F Delgado, Makoto Kuro-O, Luis Miguel Ruilope, Gema Ruiz-Hurtado
Profound disturbances in mineral metabolism are closely linked to the progression of chronic kidney disease. However, increasing clinical and experimental evidence indicate that alterations in phosphate homeostasis could have an even stronger impact on the heart. The aim of this review is to provide the reader with an update of how alterations in mineral metabolism are related to direct and indirect cardiotoxic effects beyond the nephrology setting. Evidence exists that alterations in mineral metabolism that are related to changes in parathyroid hormone (PTH), vitamin D, and the FGF-23-Klotho axis have direct pathological consequences for the heart...
February 2, 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29382567/fibroblast-growth-factor-type-1-receptor-stimulation-of-t-type-ca2-channels-in-sensory-neurons-requires-the-phosphatidylinositol-3-kinase-and-protein-kinase-a-pathways-independently-of-akt
#5
Weibing Si, Yuan Zhang, Kun Chen, Dan Hu, Zhiyuan Qian, Shan Gong, Hua Li, Yuefeng Hao, Jin Tao
Fibroblast growth factor-23 (FGF-23) secreted by osteocytes is known as a circulating factor that is essential for phosphate homeostasis. Recent studies have implicated FGF-23 in the nociceptive signalling of peripheral sensory neurons. However, the relevant mechanisms underlying this effect are not known. In this study, we determine the role of FGF-23 in regulating T-type Ca2+ channels (T-type channels) in small-diameter dorsal root ganglion (DRG) neurons in mice. Our results show that FGF-23 increases T-type channel currents in a concentration-dependent manner...
January 27, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29376143/bevacizumab-injection-in-patients-with-neovascular-age-related-macular-degeneration-increases-angiogenic-biomarkers
#6
Thiago Cabral, Luiz H Lima, Luiz Guilherme M Mello, Júlia Polido, Éverton P Correa, Akiyoshi Oshima, Jimmy Duong, Pedro Serracarbassa, Caio V Regatieri, Vinit B Mahajan, Rubens Belfort
Purpose: To evaluate the expression of 19 angiogenic biomarkers in the aqueous humor before and after intravitreal bevacizumab injection (IVB) in eyes with neovascular age-related macular degeneration (AMD). Design: Prospective, noncomparative, interventional case series. Participants: Twenty-three eyes of 23 treatment-naïve patients with choroidal neovascularization (CNV) secondary to neovascular AMD. Methods: Eyes were diagnosed with CNV secondary to neovascular AMD and were treated with 3 monthly IVBs...
January 2018: Ophthalmology Retina
https://www.readbyqxmd.com/read/29372301/effect-of-variations-in-dietary-pi-intake-on-intestinal-pi-transporters-napi-iib-pit-1-and-pit-2-and-phosphate-regulating-factors-pth-fgf-23-and-mepe
#7
Tatiana Martins Aniteli, Flávia Ramos de Siqueira, Luciene Machado Dos Reis, Wagner Vasques Dominguez, Elizabeth Maria Costa de Oliveira, Patrícia Castelucci, Rosa Maria Affonso Moysés, Vanda Jorgetti
Hyperphosphatemia is a common condition in patients with chronic kidney disease (CKD) and can lead to bone disease, vascular calcification, and increased risks of cardiovascular disease and mortality. Inorganic phosphate (Pi) is absorbed in the intestine, an important step in the maintenance of homeostasis. In CKD, it is not clear to what extent Pi absorption is modulated by dietary Pi. Thus, we investigated 5/6 nephrectomized (Nx) Wistar rats to test whether acute variations in dietary Pi concentration over 2 days would alter hormones involved in Pi metabolism, expression of sodium-phosphate cotransporters, apoptosis, and the expression of matrix extracellular phosphoglycoprotein (MEPE) in different segments of the small intestine...
January 25, 2018: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/29334610/phase-ii-study-of-dovitinib-in-patients-with-castration-resistant-prostate-cancer-kcsg-gu11-05
#8
Yoon Ji Choi, Hye Sook Kim, Se Hoon Park, Bong-Seog Kim, Kyoung Ha Kim, Hyo Jin Lee, Hong Suk Song, Dong-Yeop Shin, Ha Young Lee, Hoon-Gu Kim, Kyung Hee Lee, Jae Lyun Lee, Kyong Hwa Park
Purpose: Fibroblast growth factor (FGF) signals are important in carcinogenesis and progression of prostate cancer. Dovitinib is an oral, pan-class inhibitor of vascular endothelial growth factor receptor (VEGFR), platelet-derived growth factor receptor, and fibroblast growth factor receptor (FGFR). We evaluated the efficacy and toxicity of dovitinib in men with metastatic castration resistant prostate cancer (mCRPC). Materials and Methods: This study was a single-arm, phase II, open-label, multicenter trial of dovitinib 500mg/day (5-days-on/2-days-off schedule)...
January 2, 2018: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29325796/lcz696-sacubitril-valsartan-an-angiotensin-receptor-neprilysin-inhibitor-attenuates-cardiac-hypertrophy-fibrosis-and-vasculopathy-in-a-rat-model-of-chronic-kidney-disease
#9
Yasunori Suematsu, Wanghui Jing, Ane Nunes, Moti L Kashyap, Mahyar Khazaeli, Nosratola D Vaziri, Hamid Moradi
BACKGROUND: Chronic kidney disease (CKD) is associated with cardiac hypertrophy, fibrosis and increased risk of cardiovascular mortality. LCZ696 (Sacubitril/valsartan) is a promising agent which has shown significant potential in treatment of heart failure. We hypothesized that LCZ696 is more effective than valsartan alone in treatment of cardiovascular abnormalities associated with experimental CKD. METHODS AND RESULTS: Male Sprague Dawley rats underwent 5/6 nephrectomy and were subsequently randomized to no treatment (CKD), 30 mg/kg valsartan (VAL), or 60 mg/kg LCZ696 (LCZ)...
January 8, 2018: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/29317227/prolonged-exposure-to-1-25-oh-2d3-and-high-ionized-calcium-induces-fgf-23-production-in-intestinal-epithelium-like-caco-2-monolayer-a-local-negative-feedback-for-preventing-excessive-calcium-transport
#10
Mayuree Rodrat, Kannikar Wongdee, Nattapon Panupinthu, Jirawan Thongbunchoo, Jarinthorn Teerapornpuntakit, Nateetip Krishnamra, Narattaphol Charoenphandhu
Overdose of oral calcium supplement and excessive intestinal calcium absorption can contribute pathophysiological conditions, e.g., nephrolithiasis, vascular calcification, dementia, and cardiovascular accident. Since our previous investigation has indicated that fibroblast growth factor (FGF)-23 could abolish the 1,25-dihydroxyvitamin D3 [1,25(OH)2D3]-enhanced calcium absorption, we further hypothesized that FGF-23 produced locally in the enterocytes might be part of a local negative feedback loop to regulate calcium absorption...
January 6, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29311711/association-of-bap-with-urinary-albumin-excretion-in-postmenopausal-but-not-premenopausal-non-ckd-japanese-women
#11
Etsuko Ozaki, Shinsuke Yamada, Nagato Kuriyama, Daisuke Matsui, Isao Watanabe, Teruhide Koyama, Yasuo Imanishi, Masaaki Inaba, Yoshiyuki Watanabe
We investigated whether the phosphate (Pi) load in the circulation causes renal damage in non-CKD women. This cross-sectional study included 1,094 non-CKD Japanese women. Fibroblast growth factor (FGF)-23 as a parameter for the Pi load, bone alkaline phosphatase (BAP) as a bone metabolic marker, and the urinary albumin-to-creatinine ratio (UACR) as an early marker for renal damage were measured. Postmenopausal women exhibited significantly higher levels of serum Pi, FGF-23, BAP, and UACR and significantly lower eGFR than premenopausal women...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29306478/fibroblast-growth-factor-23-is-related-to-profiles-indicating-volume-overload-poor-therapy-optimization-and-prognosis-in-patients-with-new-onset-and-worsening-heart-failure
#12
Jozine M Ter Maaten, Adriaan A Voors, Kevin Damman, Peter van der Meer, Stefan D Anker, John G Cleland, Kenneth Dickstein, Gerasimos Filippatos, Pim van der Harst, Hans L Hillege, Chim C Lang, Marco Metra, Gerjan Navis, Leong Ng, Wouter Ouwerkerk, Piotr Ponikowski, Nilesh J Samani, Dirk J van Veldhuisen, Faiez Zannad, Aeilko H Zwinderman, Martin H de Borst
BACKGROUND: Fibroblast growth factor (FGF) 23 is a hormone that increases urinary phosphate excretion and regulates renal sodium reabsorption and plasma volume. We studied the role of plasma FGF23 in therapy optimization and outcomes in patients with new-onset and worsening heart failure (HF). METHODS: We measured plasma C-terminal FGF23 levels at baseline in 2399 of the 2516 patients included in the BIOlogy Study to Tailored Treatment in Chronic HF (BIOSTAT-CHF) trial...
February 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29295788/clinical-significance-of-increased-serum-levels-of-fgf-23-in-fibrous-dysplasia
#13
Helena Florez, Stanislava Mandelikova, Xavier Filella, Ana Monegal, Núria Guañabens, Pilar Peris
INTRODUCTION AND OBJECTIVE: Fibrous dysplasia (FD) can be associated with the development of hypophosphatemic osteomalacia, caused by the production of FGF-23 by dysplastic bone tissue. This study analysed FGF-23 levels in patients with FD, and their association with disease activity and serum phosphate values. PATIENTS AND METHODS: Twelve adult patients with FD were included in the study. Clinical history, disease extension and activity and treatments received were reviewed, and the relationship of those values with FGF-23 and serum P levels was analysed...
December 30, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/29290423/erratum-to-patterns-of-fgf-23-dmp1-and-mepe-expression-in-patients-with-chronic-kidney-disease-bone-45-6-2009-1161-1168
#14
Renata C Pereira, Harald Jűppner, Carlos E Azucena-Serrano, Ora Yadin, Isidro B Salusky, Katherine Wesseling-Perry
No abstract text is available yet for this article.
December 28, 2017: Bone
https://www.readbyqxmd.com/read/29228885/multiplex-analysis-of-serum-hormone-and-cytokine-in-patients-with-cervical-copll-towards-understanding-the-potential-pathogenic-mechanisms
#15
Guo-Dong Cai, Zhuang-Chen Zhu, Jun-Qin Wang, Guang Chen, Zeng Wang, Chen-Song Yang, Gui-Xin Sun
Cervical ossification of the posterior longitudinal ligament (cOPLL) is one of the major causes of myelopathy. However, the mechanism underlying remains elusive. In the present study, using MILLIPLEX magnetic bead panel, we investigated four serum hormones and six serum cytokines in cOPLL patients and healthy subjects. The results showed that tumor necrosis factore-α (TNF-α) were significantly increased, and DDK-1 was significantly decreased in the serum from male and female cOPLL patients compared with those from healthy controls, respectively...
October 2017: Growth Factors
https://www.readbyqxmd.com/read/29189197/hr-pqct-detects-alterations-in-bone-microstructure-in-men-with-ckd-stages-3-and-4-which-are-influenced-by-hormonal-changes-and-body-composition%C3%A2
#16
Francisco P Paranhos-Neto, Guilherme A C Lima, Luciana C Silva, Miguel Madeira, Leonardo Vieira Neto, Laura M C Mendonça, Inayá C B Lima, Alvimar G Delgado, Maurilo Leite, Carlos P Gomes, Maria Lucia F Farias
INTRODUCTION: Factors associated with osteodystrophy in predialysis patients are poorly understood. In the present study, we attempted to evaluate the impact of body composition and hormonal regulatory factors on the bone microstructure in a group of men with chronic kidney disease (CKD) stages 3 and 4. MATERIALS AND METHODS: 46 men, aged 50 - 75 years, with previously unrecognized CKD were evaluated by high-resolution peripheral quantitative computed tomography (HR-pQCT), and dual-energy X-ray absorptiometry (DXA)...
November 30, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29149966/seasonal-variation-of-vitamin-d-status-in-long-term-kidney-transplant-recipients
#17
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
#18
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/29096595/pleiotropic-actions-of-fgf23
#19
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...
October 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/29073074/fgf4-retrogene-on-cfa12-is-responsible-for-chondrodystrophy-and-intervertebral-disc-disease-in-dogs
#20
Emily A Brown, Peter J Dickinson, Tamer Mansour, Beverly K Sturges, Miriam Aguilar, Amy E Young, Courtney Korff, Jenna Lind, Cassandra L Ettinger, Samuel Varon, Rachel Pollard, C Titus Brown, Terje Raudsepp, Danika L Bannasch
Chondrodystrophy in dogs is defined by dysplastic, shortened long bones and premature degeneration and calcification of intervertebral discs. Independent genome-wide association analyses for skeletal dysplasia (short limbs) within a single breed (PBonferroni = 0.01) and intervertebral disc disease (IVDD) across breeds (PBonferroni = 4.0 × 10(-10)) both identified a significant association to the same region on CFA12. Whole genome sequencing identified a highly expressed FGF4 retrogene within this shared region...
October 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
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