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https://www.readbyqxmd.com/read/29910739/effects-of-dietary-phosphorus-level-on-the-expression-of-calcium-and-phosphorus-transporters-in-laying-hens
#1
Peng Li, Rongmei Wang, Hongchao Jiao, Xiaojuan Wang, Jingpeng Zhao, Hai Lin
The transport of calcium and phosphorus is mainly relied on their corresponding transporters. The aim of this study was to determine the effect of dietary phosphorus level on the expression of the relevant calcium and phosphorus transporters in laying hens, which has a large amount of calcium and phosphorus input from intestine and output from kidney and eggshell gland. Thirty-six 25-week-old Hy-line Brown hens were fed diets with different available phosphorus level (AP, 0.15, 0.41, and 0.82%), respectively...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29910605/role-of-etelcalcetide-in-the-management-of-secondary-hyperparathyroidism-in-hemodialysis-patients-a-review-on-current-data-and-place-in-therapy
#2
REVIEW
Claudia Friedl, Emanuel Zitt
Secondary hyperparathyroidism (sHPT) is a frequently occurring severe complication of advanced kidney disease. Its clinical consequences include extraskeletal vascular and valvular calcifications, changes in bone metabolism resulting in renal osteodystrophy, and an increased risk of cardiovascular morbidity and mortality. Calcimimetics are a cornerstone of parathyroid hormone (PTH)-lowering therapy, as confirmed by the recently updated 2017 Kidney Disease: Improving Global Outcomes chronic kidney disease - mineral and bone disorder clinical practice guidelines...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29903718/calcitriol-accelerates-vascular-calcification-irrespective-of-vitamin-k-status-in-a-rat-model-of-ckd-with-hyperphosphatemia-and-secondary-hyperparathyroidism
#3
Kristin M McCabe, Jason G Zelt, Martin Kaufmann, Kimberly Laverty, Emilie Ward, Henry Barron, Glenville Jones, Michael A Adams, Rachel M Holden
Patients with chronic kidney disease have a markedly increased risk for developing cardiovascular disease. Non-traditional risk factors, such as increased phosphate retention, and deficiencies in vitamins D and K metabolism, likely play key roles in the development of vascular calcification during CKD progression. Calcitriol (1,25-(OH)2-D3) is a key transcriptional regulator of Matrix Gla protein (MGP), a vitamin K dependent protein that inhibits vascular calcification. The objective of this study was to determine if calcitriol treatment could inhibit the development of vascular calcification and if this inhibition was dependent on vitamin K status in a rat model of CKD...
June 14, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29903197/-effect-and-mechanism-of-three-kinds-of-drinking-water-on-blood-pressure-of-hypertensive-mice
#4
Qian Sun, Ronghe Chen, Fan Xin, Guohong Ruan
OBJECTIVE: To explore the effect of three kinds of drinking water and its possible mechanism on blood pressure of hypertensive mice. METHODS: The water quality parameters were measured for three kinds of drinking water, and the parameters includedtotal dissolved solids( TDS), oxygen consumed( OC), p H, oxidation reduction potential( ORP), electric conductivity( EC), dissolved hydrogen, calcium and magnesium. Establishment of mouse model of high blood pressure by using N'-nitro-L-arginine methyl ester hydrochloride( L-NAME) for 30 days...
November 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29901089/organ%C3%A2-specific-expression-of-the-divalent-ion-channel-proteins-nckx3-trpv2-ctr1-atp7a-ireg1-and-heph-in-various-canine-organs
#5
Changhwan Ahn, Jong-Sam Choi, Eui-Bae Jeung
Transmembrane cation channels include those for calcium, copper and iron ion transport. Each channel has physiological significance, and all have been associated with disease. However, the comparative study of transcriptional‑translational levels in canine organs has not been previously reported. In the present study, organ‑specific expression of calcium channels, including sodium/potassium/calcium exchanger 3 (NCKX3) and transient receptor potential cation channel subfamily V member 2 (TRPV2), copper channels, including high affinity copper uptake protein 1 (CTR1) and copper‑transporting ATPase 1 (ATP7A), and iron channels, including iron‑regulated transporter 1 (IREG1) and hephaestin (HEPH) proteins and their mRNAs were examined in the canine duodenum, kidney, spleen and liver...
June 7, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29899708/role-of-calcium-sensing-receptor-in-mechanotransducer-channel-mediated-ca-2-influx-in-hair-cells-of-zebrafish-larvae
#6
Li-Yih Lin, Ya-Hsin Yeh, Giun-Yi Hung, Chia-Hao Lin, Pung-Pung Hwang, Jiun-Lin Horng
The calcium-sensing receptor (CaSR) is an extracellular Ca2+ sensor that plays a critical role in maintaining Ca2+ homeostasis in several organs, including the parathyroid gland and kidneys. In this study, through in situ hybridization, the expression of CaSR mRNA was found in the neuromasts of zebrafish larvae. Immunohistochemistry further demonstrated that the CaSR protein was present in neuromast hair cell stereocilia and basolateral membranes. Based on the expression and subcellular localization of the CaSR in hair cells, we hypothesized that the CaSR is expressed in zebrafish lateral-line hair cells to regulate mechanotransducer (MET)-channel-mediated Ca2+ entry...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29898699/rapid-calcium-loss-may-cause-arrhythmia-in-hemofiltration-with-regional-citrate-anticoagulation-a-case-report
#7
Buyun Wu, Jing Wang, Guang Yang, Changying Xing, Huijuan Mao
BACKGROUND: Renal replacement therapy (RRT) with regional citrate anticoagulation (RCA) is an important therapeutic approach for refractory hypercalcemia complicated with renal failure. However, RCA has the potential to induce arrhythmia caused by rapid calcium loss. We report a case of arrhythmia associated with rapid calcium loss during RCA-RRT. CASE PRESENTATION: A 51-year-old man with hypercalcemia, primary hyperparathyroidism, and acute kidney injury was treated by predilutional-RCA-hemofiltration at a rate of 4...
June 14, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29895021/metabolic-syndrome-in-parathyroid-diseases
#8
Sabrina Corbetta, G Mantovani, A Spada
Parathyroid glands are the main regulator of body mineral metabolism through parathormone (PTH) actions on bone and kidney. Experimental evidence suggests that PTH may have non-classical target organs such as adipose tissue, arterial vascular wall, cardiac muscle cells, and adrenal cortex cells, where it may play a role in controlling body energy, blood pressure, and metabolism. Cardiometabolic features have been investigated in the wide spectrum of clinical parathyroid disorders, from hyperparathyroidism to pseudohypoparathyroidism and hypoparathyroidism...
2018: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/29894482/relationship-between-left-main-and-left-anterior-descending-arteries-bifurcation-angle-and-coronary-artery-calcium-score-in-chronic-kidney-disease-a-3-dimensional-analysis-of-coronary-computed-tomography
#9
Takao Konishi, Naohiro Funayama, Tadashi Yamamoto, Daisuke Hotta, Shinya Tanaka
BACKGROUND: A high coronary artery calcium score (CACS) predicts a poor prognosis in patients with coronary artery disease. We examined the relationship between the bifurcation angle and the CACS of the left main (LM) and left anterior descending (LAD) arteries in patients suffering from chronic kidney disease (CKD). METHODS: We analyzed the data of 121 patients who underwent coronary computed tomography between October 2014 and June 2015 and whose estimated glomerular filtration rate (eGFR) was <60 ml/min/1...
2018: PloS One
https://www.readbyqxmd.com/read/29892265/physiological-actions-of-fibroblast-growth-factor-23
#10
REVIEW
Reinhold G Erben
Fibroblast growth factor-23 (FGF23) is a bone-derived hormone suppressing phosphate reabsorption and vitamin D hormone synthesis in the kidney. At physiological concentrations of the hormone, the endocrine actions of FGF23 in the kidney are αKlotho-dependent, because high-affinity binding of FGF23 to FGF receptors requires the presence of the co-receptor αKlotho on target cells. It is well established that excessive concentrations of intact FGF23 in the blood lead to phosphate wasting in patients with normal kidney function...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29888950/comparison-of-amlodipine-versus-other-calcium-channel-blockers-on-blood-pressure-variability-in-hypertensive-patients-in-china-a-retrospective-propensity-score-matched-analysis
#11
Lin Zhang, JinKui Yang, LanTing Li, DongDong Liu, XiaoPing Xie, Peng Dong, Yong Lin
AIM: Reducing the fluctuation of blood pressure has recently been recognized as a potential target for improving management of hypertension to prevent cardiovascular events, particularly for strokes. Some randomized controlled trials demonstrated that amlodipine can effectively reduce blood pressure as a well-established, long-acting calcium channel blocker (CCB). However, few data are available for amlodipine on blood pressure variability (BPV) in China in a real-world setting. This study aimed to assess the effect of amlodipine versus other CCB antihypertensive agents on BPV...
June 11, 2018: Journal of Comparative Effectiveness Research
https://www.readbyqxmd.com/read/29886473/-correlation-of-fibroblast-growth-factor-23-with-adverse-prognosis-of-chronic-kidney-disease-and-therapy-strategy
#12
Haiyang Liu, Hong Liu
Fibroblast growth factor 23 (FGF23) is a hormone secreted by the bone. It is not only involved in the pathophysiological process of chronic kidney disease (CKD), but also associated with the poor prognosis. In patients with CKD, serum FGF23 levels are elevated in early phase. The increased FGF23 levels gradually lead to myocardial hypertrophy, inflammatory, vascular calcification, and low level of vitamin D, which contribute to the progress of CKD, cardiovascular complications and even death. Presently, there are several ways to reduce FGF23 levels, including decrease of intake and block of phosphorus absorption, supplement of FGF23 antibody and pseudo calcium or renal transplantation...
May 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29884226/sucroferric-oxyhydroxide-decreases-serum-phosphorus-level-and-fibroblast-growth-factor-23-and-improves-renal-anemia-in-hemodialysis-patients
#13
Hisato Shima, Keiko Miya, Kazuyoshi Okada, Jun Minakuchi, Shu Kawashima
OBJECTIVE: Sucroferric oxyhydroxide, a novel iron-based phosphate-binder, has been shown to have beneficial effects in lowering serum phosphorus levels and improving renal anemia in clinical studies. Although an effect of this agent on fibroblast growth factor 23 (FGF23) has been reported in an animal study, there is little clinical data supporting this finding. This study aimed to evaluate the effect on chronic kidney disease-mineral and bone disorder, FGF23, renal anemia, iron-related parameters, adverse events of sucroferric oxyhydroxide in hemodialysis patients...
June 8, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29883066/parathyroid-hormone-and-bone-in-dialysis-patients
#14
REVIEW
Junichiro James Kazama, Minako Wakasugi
Bone maintains extracellular calcium levels through a system called bone remodeling. Parathyroid hormone (PTH) is the major initiator of this system, which is secreted by the information through calcium sensing receptor in parathyroid cells. PTH modifies calcified bone morphology through a process of its bone action. Therefore, extremely hyperactivated parathyroid function seen in patients with chronic kidney disease has been considered to have a negative impact on the bone mechanical properties. While skeletal deformities and fragility fractures were common among dialysis patients up to the 1970s, after which methods for the treatment of hyperparathyroidism were developed, we now seldom encounter those cases with severe secondary hyperparathyroidism in Japan...
June 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29882057/effect-of-continuous-intravenous-calcium-loading-on-fibroblast-growth-factor-23-in-normal-and-uremic-rats
#15
Yasuto Shikida, Masahide Mizobuchi, Takashi Inoue, Toma Hamada, Hiroaki Ogata, Fumihiko Koiwa, Takanori Shibata
Fibroblast growth factor 23 (FGF23) is associated with mortality in patients with CKD. However, the mechanisms underlying stimulation of FGF23 remain to be investigated. We examined whether hypercalcemia induced by continuous intravenous (CIV) calcium (Ca) infusion regulates FGF23 levels in normal rats (Normal) and 5/6 nephrectomized uremic rats (Nx). Microinfusion pumps were implanted in the Normal and Nx rats for CIV Ca infusion, and blood, urine, kidney, and tibia were collected. The results showed an increase in serum Ca-stimulated FGF23 independently of serum phosphate (P) and creatinine levels in Normal and Nx rats...
June 7, 2018: Calcified Tissue International
https://www.readbyqxmd.com/read/29882003/prevalence-and-risk-factors-for-hypercalcemia-among-non-dialysis-patients-with-chronic-kidney-disease-mineral-and-bone-disorder
#16
Jun Jie Benjamin Seng, Ying Lin Cheryl Tan, Rou Wei Lim, Hui Ting Sarah Ng, Puay Hoon Lee, Jiunn Wong
PURPOSE: To examine the prevalence and risk factors for hypercalcemia among non-dialysis chronic kidney disease (CKD) patients with mineral and bone disorder (MBD). METHODS: A retrospective cohort study was conducted in Singapore General Hospital, involving all CKD stage 4 and 5 pre-dialysis patients who were on treatment for MBD in June 2016. Each patient was followed up for 1 year and screened for hypercalcemia episodes. Mild, moderate and severe hypercalcemia were defined as corrected calcium of 2...
June 7, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29879819/molecular-characterization-and-expression-of-adamts8-a-disintegrin-and-metalloproteinase-with-thrombospondin-motifs-8-in-chicken
#17
Ra Ham Lee, Seokhyun Lee, Yu Ra Kim, Hak-Kyo Lee, Ki-Duk Song
Objective: A disintegrin and metallopeptidase with thrombospondin motifs type 8 (ADAMTS8) is crucial for diverse physiological processes, such as inflammation, tissue morphogenesis, and tumorigenesis. The chicken ADAMTS8 (chADAMTS8) gene was differentially expressed in the kidney following exposure to different calcium concentrations, suggesting a pathological role of this protein in metabolic diseases. We aimed to examine the molecular characteristics of chADAMTS8 and analyze the gene-expression differences in response to Toll-like receptor 3 (TLR3) stimulation...
May 31, 2018: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29879701/treatment-based-on-cinacalcet-reduces-oxidative-stress-in-hemodialysis-patients-with-secondary-hyperparathyroidism
#18
Piotr Kuczera, Marcin Adamczak, Grzegorz Machnik, Boguslaw Okopien, Andrzej Wiecek
BACKGROUND/AIMS: Oxidative stress is one of the leading factors contributing to increased mortality in patients with chronic kidney disease (CKD) and secondary hyperparathyroidism (sHPT). Cinacalcet is now commonly used in the treatment of sHPT in patients with CKD. The aim of this study was to assess the influence of treatment with cinacalcet on the oxidative stress markers in patients on hemodialysis with sHPT. METHODS: In 58 hemodialysed patients with sHPT (parathyroid hormone [PTH] > 300 pg/mL) plasma Advanced Oxidation Protein Products (AOPP), serum total antioxidant capacity - ImAnOx (TAS/TAC), serum PTH, calcium and phosphate concentrations were assessed before the first dose of cinacalcet and after 6 months of treatment...
June 7, 2018: Nephron
https://www.readbyqxmd.com/read/29876775/24-h-urine-metabolic-profile-is-it-necessary-in-all-kidney-stone-formers
#19
Yasmin Abu-Ghanem, Asaf Shvero, Nir Kleinmann, Harry Z Winkler, Dorit E Zilberman
PURPOSE: A 24-h urine metabolic profile (24-UMP) is an integral part of nephrolithiasis work-up. We aimed to explore whether it can be waived under certain circumstances. MATERIALS AND METHODS: We reviewed our prospective registry database of patients seen at our outpatient clinic for nephrolithiasis between the years 2010 and 2017. Data included: gender, age at first stone, body mass index (BMI), self-reported comorbidities and family history of nephrolithiasis...
June 6, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29872964/the-interplay-between-bone-and-vessels-in-pediatric-ckd-lessons-from-a-single-center-study
#20
Evgenia Preka, Bruno Ranchin, Anke Doyon, Melody Vierge, Tiphanie Ginhoux, Behrouz Kassai, Justine Bacchetta
OBJECTIVE: Mineral and bone disorders associated to chronic kidney disease (CKD-MBD) are a daily challenge for pediatric nephrologists, with a significant risk of long-term bone and vascular comorbidities. METHODS: This single-center study is a prospective transversal evaluation of pediatric CKD patients of our center, part of the European 4C study. In addition to clinical and biochemical data, vascular and bone evaluation was performed: 24-h blood pressure assessment, carotid intima-media thickness (cIMT), pulse wave velocity (PWV), and high-resolution peripheral quantitative computed tomography (HR-pQCT) at the ultra-distal tibia...
June 5, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
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