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https://www.readbyqxmd.com/read/29672176/prevalence-and-risk-factors-for-vascular-calcification-in-chinese-patients-receiving-dialysis-baseline-results-from-a-prospective-cohort-study
#1
Zhi-Hong Liu, Xue-Qing Yu, Jun-Wei Yang, Ai-Li Jiang, Bi-Cheng Liu, Chang-Ying Xing, Ji-Zhuang Lou, Mei Wang, Hong Cheng, Jun Liu, Jun-Zhou Fu, Ai-Hua Zhang, Miao Zhang, Qiao-Ling Zhou, Chen Yu, Rong Wang, Li Wang, Yu-Qing Chen, Tian-Jun Guan, Ai Peng, Chen Nan, Chuan-Ming Hao, Xu-Yang Cheng
OBJECTIVE: With limited data available on calcification prevalence in chronic kidney disease (CKD) patients on dialysis, the China Dialysis Calcification Study (CDCS) determined the prevalence of vascular/valvular calcification (VC) and association of risk factors in Chinese patients with prevalent hemodialysis (HD) or peritoneal dialysis (PD). METHODS: CKD patients undergoing HD/PD for ≥6 months were enrolled. Prevalence data for calcification and medical history were documented at baseline...
April 19, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29671909/should-phosphate-management-be-limited-to-the-kdigo-kdoqi-guidelines
#2
Sangeet Dhillon-Jhattu, Stuart M Sprague
Hyperphosphatemia is a common complication of CKD. Prior to development of overt hyperphosphatemia, there are several adaptive mechanisms that occur to maintain normal phosphorus equilibrium in patients with CKD. These include an early and progressive rise in fibroblast growth factor 23 (FGF 23), followed by an increase in parathyroid hormone (PTH) with a decrease in 1,25-dihydroxyvitamin D (1,25 Vit D). Over the last 20 years, a large number of studies have shown that hyperphosphatemia is a strong predictor of adverse clinical outcomes including increased incidence of vascular calcification, cardiovascular disease, and all-cause mortality in both individuals with CKD as well as those with normal kidney function...
April 19, 2018: Seminars in Dialysis
https://www.readbyqxmd.com/read/29665846/correlation-of-serum-levels-of-fibroblast-growth-factor-23-and-klotho-protein-levels-with-bone-mineral-density-in-maintenance-hemodialysis-patients
#3
Shubei Zheng, Yan Chen, Yu Zheng, Zhihong Zhou, Zhanyuan Li
OBJECTIVE: The correlation of serum fibroblast growth factor 23 (FGF-23) and Klotho protein levels with bone mineral density (BMD) in maintenance hemodialysis (MHD) patients was analyzed. METHODS: Between January 2015 and November 2015, 125 MHD patients in our hospital were enrolled. Dual-energy X-ray absorptiometry was used to examine the BMD in the femoral neck and lumbar spine of MHD patients. The patients were divided into three groups: a normal bone mass group, an osteopenia group, and an osteoporosis group...
April 17, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29662617/premature-ovarian-aging-in-brca-carriers-a-prototype-of-systemic-precocious-aging
#4
Irit Ben-Aharon, Mattan Levi, David Margel, Rinat Yerushalmi, Shulamith Rizel, Shlomit Perry, Eran Sharon, Noa Hasky, Ronit Abir, Benny Fisch, Ana Tobar, Ruth Shalgi, Salomon Marcello Stemmer
Purpose: Though former evidence implies a correlation of breast cancer susceptibility gene ( BRCA ) mutation with reduced ovarian reserve, the data is yet inconsistent. Our aim was to investigate biomarkers of ovarian aging in a cohort of young healthy carriers of the BRCA mutation. We hypothesized that the role played by BRCA genes in aging pathways is not exclusive to the ovary. Experimental Design: Healthy female BRCA carriers, 40 years or younger and healthy male BRCA carriers, 50 years or younger, were enrolled in the study...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29660161/the-fgf-23-klotho-axis-and-its-relationship-with-phosphorus-calcium-vitamin-d-pth-aldosterone-severity-of-disease-and-outcome-in-hospitalised-foals
#5
A M Kamr, K A Dembek, B E Hildreth, P R Morresey, R A Rathgeber, T A Burns, A A Zaghawa, R E Toribio
BACKGROUND: Fibroblast growth factor-23 (FGF-23) and klotho are key regulators of vitamin D and parathyroid hormone (PTH) synthesis as well as phosphorus and calcium homeostasis; however, information on the FGF-23/klotho axis in healthy and hospitalised foals is lacking. OBJECTIVES: The aims of this study were to measure serum FGF-23 and klotho concentrations and determine their association with serum phosphorus, total calcium (TCa), vitamin D metabolite [25(OH)D, 1,25(OH)2 D], PTH, and aldosterone concentrations, disease severity, and mortality in hospitalised foals...
April 16, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29621752/fibroblast-growth-factor-23-a-biomarker-of-kidney-function-decline
#6
David A Drew, Ronit Katz, Stephen Kritchevsky, Joachim H Ix, Michael G Shlipak, Anne B Newman, Andy Hoofnagle, Linda Fried, Mark J Sarnak, Orlando M Gutierrez
BACKGROUND: Fibroblast growth factor 23 (FGF-23) is a hormone that regulates phosphorus levels and vitamin D metabolism. Previous studies have shown FGF-23 to be a risk factor for incident end-stage renal disease; however, there are less data on the association of FGF-23 with earlier kidney-related outcomes. METHODS: Serum FGF-23 was assayed using an intact ELISA assay in 2,496 participants of the Healthy Aging and Body Composition Study, a cohort of well-functioning older adults...
April 5, 2018: American Journal of Nephrology
https://www.readbyqxmd.com/read/29607318/calcitriol-prevents-cardiovascular-repercussions-in-puromycin-aminonucleoside-induced-nephrotic-syndrome
#7
Fernandes-Cerqueira Cátia, Quelhas-Santos Janete, Sampaio-Maia Benedita, Simões-Silva Liliana, Soares-Silva Isabel, Roncon-Albuquerque Roberto, Pestana Manuel
Puromycin aminonucleoside-induced nephrotic syndrome (PAN-NS) is characterized by cardiac remodeling and increased local inflammatory activity. Patients with NS and animal models of NS have vitamin D3 deficiency. The aim of the present study was to evaluate the influence of calcitriol on cardiac remodeling and local inflammatory state in PAN-NS rat model. Male Sprague-Dawley rats were injected with PAN or vehicle on day 0. PAN and control rats were divided into two subgroups for the administration of calcitriol (PAN-D and Ct-D groups) or the vehicle (PAN-V and Ct-V groups) during 21 days...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29606304/fibroblast-growth-factor-23-is-associated-with-adiposity-in-patients-receiving-hemodialysis-possible-cross-talk-between-bone-and-adipose-tissue
#8
Janet M Chiang, George A Kaysen, Anne L Schafer, Cynthia Delgado, Kirsten L Johansen
OBJECTIVE: Fibroblast growth factor 23 (FGF-23) may be involved in signaling between bone and adipose tissue in dialysis patients, but its role is uncertain. We sought to examine the association between FGF-23 and adiposity and whether this association is mediated in part by leptin. DESIGN/SETTING: We performed univariate and multivariate linear regression analyses using data from 611 participants in a cohort of prevalent hemodialysis patients recruited from dialysis centers in Atlanta, GA and San Francisco, CA from 2009 to 2011...
March 29, 2018: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29599772/the-gut-microbiota-regulates-endocrine-vitamin-d-metabolism-through-fibroblast-growth-factor-23
#9
Stephanie A Bora, Mary J Kennett, Philip B Smith, Andrew D Patterson, Margherita T Cantorna
To determine the effect of the microbiota on vitamin D metabolism, serum 25-hydroxyvitamin D(25D), 24,25-dihydroxyvitamin D (24,25D), and 1,25-dihydroxyvitamin D (1,25D) were measured in germ-free (GF) mice before and after conventionalization (CN). GF mice had low levels of 25D, 24,25D, and 1,25D and were hypocalcemic. CN of the GF mice with microbiota, for 2 weeks recovered 25D, 24,25D, and 1,25D levels. Females had more 25D and 24,25D than males both as GF mice and after CN. Introducing a limited number of commensals (eight commensals) increased 25D and 24,25D to the same extent as CN...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29574933/the-association-of-serum-fgf23-and-non-alcoholic-fatty-liver-disease-is-independent-of-vitamin-d-in-type-2-diabetes-patients
#10
Xingxing He, Yun Shen, Xiaojing Ma, Lingwen Ying, Jiahui Peng, Xiaoping Pan, Yuqian Bao, Jian Zhou
Recent studies have showed that circulating fibroblast growth factor (FGF) 23 and vitamin D levels were closely correlated with insulin resistance. The aim of this study was to investigate the relationship among serum FGF 23 level, serum 25-hydroxyvitamin D [25(OH)D] levels, and non-alcoholic fatty liver disease (NAFLD) in Chinese patients with type 2 diabetes mellitus (T2DM). This study enrolled 331 hospitalized T2DM patients (209 patients with NAFLD and 122 patients without NAFLD). Serum FGF23 levels were measured using a sandwich enzyme-linked immunosorbent assay...
March 25, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29548779/dialysis-as-a-treatment-option-for-a-patient-with-normal-kidney-function-and-familial-tumoral-calcinosis-due-to-a-compound-heterozygous-fgf23-mutation
#11
Patrícia T Goldenstein, Precil D Neves, Bruno E Balbo, Rosilene M Elias, Alexandre C Pereira, Luiz F Onuchic, Harald Jüppner, Vanda Jorgetti, Hugo Abensur, Rosa Maria Moysés
Primary tumoral calcinosis is a rare autosomal recessive disorder characterized by ectopic calcified tumoral masses. Mutations in 3 genes (GALNT3, FGF23, and KL) have been linked to this human disorder. We describe a case of a 28-year-old man with a history of painful firm masses over his right and left gluteal region, right clavicle region, knees, and left elbow. Biochemical analysis disclosed hyperphosphatemia (phosphate, 9.0 mg/dL) and normocalcemia (calcium, 4.8 mg/dL), with normal kidney function and fractional excretion of phosphate of 3%...
March 14, 2018: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29545872/high-calcium-diet-alleviates-5-6-nephrectomy-induced-bone-deteriorations-of-lumbar-vertebrae-in-mice
#12
Hai-Tao Hou, Ya-Nan Wang, Shi-Ze Shao, Song Fu, Xiang-Peng Huang, Xiao-Hui Wang
Dietary calcium (Ca) supplementation has beneficial effects on bone health. However, it is not clear whether a high calcium diet (HCD) following 5/6 nephrectomy (5/6 Nx) is beneficial to bone health. The aim of the present study was to examine the effects of an HCD on bone metabolism using a chronic kidney disease (CKD) mouse model. Male C57BL/6J mice were divided into three groups: Sham group, 5/6 Nx group and 5/6 Nx + HCD group. Mice were sacrificed 12 weeks post-surgery. Calcium (Ca) and creatinine (Cr) were measured using standard colorimetric methods and picric acid methods, respectively...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29528583/circulating-fibroblast-growth-factors-21-and-23-as-biomarkers-of-progression-in-diabetic-nephropathy-in-type-2-diabetes-with-normoalbuminuria
#13
Amany M El-Saeed, Ghada F El-Mohasseb
Diabetic nephropathy (DN) is a progressive kidney disease. Previous studies reported that microalbuminuria might not be a sufficient marker to identify diabetic patients at risk of kidney disease progression. Fibroblast growth factors 21 (FGF21) and 23 (FGF23) may play an important role in the DN development and progression. We aimed to assess levels of FGF21 and FGF23 in patients with type 2 diabetes (T2D) with normoalbuminurea, to determine their association with other biochemical parameters and to verify their role as contributing factors to development of DN...
June 2017: Egyptian Journal of Immunology
https://www.readbyqxmd.com/read/29518087/fibroblast-growth-factor-23-is-upregulated-in-the-kidney-in-a-chronic-kidney-disease-rat-model
#14
Hidekazu Sugiura, Ai Matsushita, Mayuko Futaya, Atsuko Teraoka, Ken-Ichi Akiyama, Noriyoshi Usui, Nobuo Nagano, Kosaku Nitta, Ken Tsuchiya
The hormone fibroblast growth factor 23 (FGF23) is secreted from bone and is involved in phosphorus (P) metabolism. FGF23 mainly binds the FGF receptor, which interacts with αKlotho in the kidney or parathyroid and regulates Na-dependent phosphate co-transporter type IIa (NaPi-IIa) and type IIc (NaPi-IIc) expression, 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) activity, and parathyroid hormone (PTH) secretion. In this study, we utilized hemi-nephrectomized rats fed a high-P diet (HP Nx), rats subjected to a partial nephrectomy (PN) and rats with doxorubicin-induced renal failure (DXR) as chronic kidney disease (CKD) animal models and analyzed the P metabolism and FGF23 expression in the kidneys in each CKD model...
2018: PloS One
https://www.readbyqxmd.com/read/29515522/targeting-fibroblast-growth-factor-23-signaling-with-antibodies-and-inhibitors-is-there-a-rationale
#15
REVIEW
Seiji Fukumoto
Fibroblast growth factor 23 (FGF23) is a phosphotropic hormone mainly produced by bone. FGF23 reduces serum phosphate by suppressing intestinal phosphate absorption through reducing 1,25-dihydroxyvitamin D and proximal tubular phosphate reabsorption. Excessive actions of FG23 result in several kinds of hypophosphatemic rickets/osteomalacia including X-linked hypophosphatemic rickets (XLH) and tumor-induced osteomalacia. While neutral phosphate and active vitamin D are standard therapies for child patients with XLH, these medications have several limitations both in their effects and adverse events...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29514156/cinacalcet-for-treatment-of-chronic-kidney-disease-mineral-and-bone-disorder-a-meta-analysis-of-randomized-controlled-trials
#16
Primploy Greeviroj, Thidarat Kitrungphaiboon, Pisut Katavetin, Kearkiat Praditpornsilpa, Somchai Eiam-Ong, Bertrand L Jaber, Paweena Susantitaphong
BACKGROUND: Cinacalcet could decrease serum calcium, phosphate, and parathyroid hormone (PTH) in previous meta-analyses. However, the effect of cinacalcet on the new biomarkers such as fibroblast growth factor-23 (FGF-23), bone markers, and vascular calcification are still unestablished. We conducted a meta-analysis to examine the effects of cinacalcet on all laboratory and clinical spectrums of chronic kidney disease-mineral bone disorders (CKD-MBD). METHODS: A systematic literature search was conducted in MEDLINE, Scopus, Cochrane Central Register of Controlled Trials, and Clinical Trials...
March 7, 2018: Nephron
https://www.readbyqxmd.com/read/29509906/reduced-levels-of-anti-ageing-hormone-klotho-predict-renal-function-decline-in-type-2-diabetes
#17
Nikolaos Fountoulakis, Giuseppe Maltese, Luigi Gnudi, Janaka Karalliedde
Context and Objective: Soluble Klotho (sKlotho) is a circulating hormone with cardiovascular-renal protective effects. Whether sKlotho predicts estimated glomerular filtration rate (eGFR) decline in type 2 diabetes mellitus (T2DM) patients with relatively preserved renal function is unknown. Design, setting, participants and measurements: Single-centre observational follow-up study of 101 patients with T2DM and eGFR >45 ml/min, [91% on renin angiotensin system (RAS) blockade] followed for a median (range) of 9 (2-13) years...
March 2, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29459310/regulation-of-vitamin-d-metabolism-following-disruption-of-the-microbiota-using-broad-spectrum-antibiotics
#18
Stephanie A Bora, Mary J Kennett, Philip B Smith, Andrew D Patterson, Margherita T Cantorna
Vitamin D, 25hydroxyvitamin D (25D), and 24,25dihydroxyvitamin D (24,25D) were measured before and after broad spectrum antibiotic (Abx) treatment for 2 wks. Abx treatments increased 25D and 24,25D levels suggesting that the microbiota or Abx were altering vitamin D metabolism. Increased 25D, but not 24,25D, following Abx treatments were found to be dependent on toll like receptor signaling. Conversely, the effects of Abx on 24,25D levels required that the vitamin D receptor (VDR) be expressed in tissues outside of the hematopoietic system (kidney) and not the immune system...
February 2, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29458003/fgf-23-pth-and-vitamin-d-status-in-end-stage-renal-disease-patients-affected-by-vdr-foki-and-bsmi-variants
#19
Mouna Bouksila, Wajih Kaabachi, Mehdi Mrad, Wided Smaoui, Elhem Cheour El Kateb, Mohammed Karim Zouaghi, Kamel Hamzaoui, Afef Bahlous
OBJECTIVES: The aim of this study was to evaluate the association between two VDR SNPs FokI and BsmI and mineral status in ESRD patients. DESIGN AND METHODS: Our case-control study included 100 patients with chronic renal failure in ESRD and 149 healthy subjects. We measured the serum Vitamin D levels and the serum intact PTH level by Electrochemiluminescence Technology (cobas E411 analyzer). We evaluated the serum FGF23 levels by indirect ELISA method. The genotyping of two VDR gene variants FokI and BsmI was carried out by PCR-RFLP technique...
February 16, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29456213/association-of-serum-fibroblast-growth-factor-23-with-doppler-pulse-wave-velocity-in-hemodialysis-patients
#20
Walaa H Ibrahim, Ahmad B Ahmad, Noha G Sayed
We aimed to study the association of fibroblast growth factor-23 (FGF-23) as a novel cardiovascular risk factor with Doppler pulse wave velocity (PWV) as an arterial stiffness measuring tool in hemodialysis (HD) patients. We conducted a cross-sectional study in which blood samples from 86 HD patients were obtained to estimate FGF 23 and other parameters. Flow waveforms were obtained at two locations within right common carotid artery, and right femoral artery by Doppler ultrasound with ECG recorded in addition...
January 2018: Saudi Journal of Kidney Diseases and Transplantation
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