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https://www.readbyqxmd.com/read/29782992/single-ultra-high-dose-cholecalciferol-to-prevent-vitamin-d-deficiency-in-pediatric-hematopoietic-stem-cell-transplantation
#1
Gregory Wallace, Sonata Jodele, Kasiani C Myers, Christopher E Dandoy, Javier El-Bietar, Adam Nelson, Ashley Teusink-Cross, Pooja Khandelwal, Cynthia Taggart, Catherine M Gordon, Stella M Davies, Jonathan C Howell
BACKGROUND: Vitamin D (vitD) deficiency is prevalent among childhood hematopoietic stem cell transplantation (HSCT) recipients and associated with inferior transplant survival at 100 days after transplantation. Achieving and maintaining therapeutic vitD levels in HSCT recipients is extremely challenging in the first 3-6 months after transplant due to poor compliance in the setting of mucositis, and concomitant use of critical transplant drugs that interfere with vitD absorption. We sought to evaluate the safety and efficacy of a single, ultra-high dose of vitD given prior to childhood HSCT to maintain levels in a therapeutic range during the peri-transplantation period...
May 18, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29767947/application-of-calcium-binding-motif-of-e-cadherin-for-electrochemical-detection-of-pb-ii
#2
Hamid R Lotfi Zadeh Zhad, Rebecca Y Lai
We report, for the first time, the use of a 13-amino-acid peptide sequence derived from the calcium-binding site of E-cadherin in the fabrication of an electrochemical peptide-based (E-PB) Pb(II) sensor. The sensing mechanism is analogous to that of previously developed E-PB sensors. Binding of Pb(II) rigidifies the surface-immobilized and methylene blue (MB)-modified peptide probe, thereby limiting the accessibility of the tethered MB to the electrode surface. This change in probe flexibility results in a reduction in the MB current that is dependent on the target concentration...
May 16, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29762732/calcium-particle-size-effects-on-plasma-excreta-and-urinary-ca-and-p-changes-in-broiler-breeder-hens
#3
M K Manangi, P Maharjan, C N Coon
An experiment was conducted using non-colostomized and colostomized broiler breeder hens to determine the effects of feeding limestone of 2 different mean particle sizes (185 microns and 3490 microns) on P excretion, total P and Ca retention, and urinary P and Ca excretion during a 6-week feeding study. Additionally, changes in plasma inorganic P (iP) and ionic Ca (Ca++) and urinary excretion of P and Ca were determined in one egg laying cycle of 24 hours. One-hundred-fifty non-colostomized and 6 colostomized broiler breeder hens, 30 wk of age, were divided into 2 groups and fed broiler breeder diets supplemented with either small particle or large particle limestone...
May 11, 2018: Poultry Science
https://www.readbyqxmd.com/read/29761068/antibiotic-containing-bone-substitute-in-major-hip-surgery-a-long-term-gentamicin-elution-study
#4
Mindaugas Stravinskas, Malin Nilsson, Peter Horstmann, Michael Mørk Petersen, Sarunas Tarasevicius, Lars Lidgren
Objectives: The objective is to present the antibiotic elution from a locally implanted gentamicin containing hydroxyapatite and calcium sulphate bone substitute with an extended follow up of 30 days. We also compare the pharmacokinetics of the ceramic bone substitute with a published study on gentamicin containing poly (methyl methacrylate) (PMMA) bone cement used in primary total hip arthroplasty. Methods: Gentamicin release was measured in the urine for a month and the serum for 4 days in 10 patients operated for trochanteric hip fractures and 10 patients in uncemented hip revisions...
2018: Journal of Bone and Joint Infection
https://www.readbyqxmd.com/read/29757578/seasonal-variations-in-urinary-calcium-volume-and-vitamin-d-in-kidney-stone-formers
#5
Kyrollis Attalla, Shubha De, Carl Sarkissian, Manoj Monga
OBJECTIVES: To investigate the seasonal variations in urinary calcium, serum vitamin D, and urinary volume in patients with a history of nephrolithiasis. MATERIALS AND METHODS: Patients included were those who completed a 24-hour urine metabolic evaluation on two occasions; one in summer (June-Aug) and one in winter (Nov-Jan), and who had not started any medications or been instructed on dietary modifications in the interval between the two tests that may have impacted the results...
May 10, 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29752823/prenatal-diagnosis-of-megacystis-microcolon-intestinal-hypoperistalsis-syndrome-by-biochemical-analysis-of-fetal-urine
#6
Jonathan Rosenblatt, Sophie Dreux, Emmanuel Spaggiari, Cécile Morin, Bichr Allaf, Anne Sylvie Valat, Danny Halim, Jean-François Oury, Françoise Muller
OBJECTIVES: To determine a model of fetal urine biochemical markers to differentiate megacystis microcolon intestinal hypoperistalsis syndrome (MMIHS) from other megacystis. METHOD: Retrospective study of biochemical analysis of fetal urine in patients who presented prenatally with megacystis. We studied β2-microglobulin, sodium, calcium, and phosphorus. Twenty-six patients subsequently diagnosed with MMIHS were compared with two control groups: one of end-stage renal failure (ESRF, 64 fetuses) and the second of "good" postnatal renal function (control group, 64 fetuses)...
May 12, 2018: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29750674/evaluating-plutonium-intake-and-radiation-dose-following-extensive-chelation-treatment
#7
Sara Dumit, Maia Avtandilashvili, Sergei Y Tolmachev
A voluntary partial-body donor (U.S. Transuranium and Uranium Registries Case 0785) was accidentally exposed to Pu via inhalation and wounds. This individual underwent medical treatment including wound excision and extensive chelation treatment with calcium ethylenediaminetetraacetic acid and calcium diethylenetriaminepentaacetic acid. Approximately 2.2 kBq of Pu was measured in the wound site 44 y after the accident. Major soft tissues and selected bones were collected at autopsy and radiochemically analyzed for Pu, Pu, and Am...
May 4, 2018: Health Physics
https://www.readbyqxmd.com/read/29748075/protective-effect-of-calcitriol-on-podocytes-in-spontaneously-hypertensive-rat
#8
Weiwei Shi, Ling Guo, Guangyi Liu, Tao Peng, Hongyu Li, Tingting Xie, Dengren Li, Junhui Zhen, Yan Wang, Huimin Yang, Xiangdong Yang
BACKGROUND: Hypertension is a major global public health issue. Uncontrolled hypertension leads to organ damage, especially renal damage. Calcitriol is used to treat osteoporosis, promote bone formation, and increase bone mass. Previous studies have demonstrated that 1,25(OH)2D3, in addition to its classic role, also has multiple immune regulation and renoprotective functions and inhibits the activity of the renin-angiotensin-aldosterone system (RASS). The aim of the current study was to investigate the renoprotective effects of calcitriol in a spontaneously hypertensive rat (SHR) model...
May 7, 2018: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29730204/menopause-and-risk-of-kidney-stones
#9
Megan Prochaska, Eric N Taylor, Gary Curhan
BACKGROUND: Metabolic changes due to menopause may alter urine composition and kidney stone risk but results from prior work on this association have been mixed. We examined menopause and risk of incident kidney stones and changes in 24-hour urine composition in the Nurses' Health Study II. METHODS: We conducted a prospective analysis of 108,639 Nurses' Health Study II participants who provided information on menopause and kidney stones. We used multivariate adjusted Cox proportional hazards models...
May 3, 2018: Journal of Urology
https://www.readbyqxmd.com/read/29727008/pro-fhh-a-risk-equation-to-facilitate-the-diagnosis-of-parathyroid-related-hypercalcemia
#10
Jean-Philippe Bertocchio, Muriel Tafflet, Eugénie Koumakis, Gérard Maruani, Rosa Vargas-Poussou, Caroline Silve, Peter H Nissen, Stéphanie Baron, Caroline Prot-Bertoye, Marie Courbebaisse, Jean-Claude Souberbielle, Lars Rejnmark, Catherine Cormier, Pascal Houillier
Context: Parathyroid-related hypercalcemia is due to primary hyperparathyroidism (PHPT) or to familial hypocalciuric hypercalcemia (FHH). PHPT can lead to complications that necessitate parathyroidectomy. FHH is a rare genetic disease resembling PHPT; surgery is ineffective. A reliable method for distinguishing FHH from PHPT is needed. Objective: To develop an easy-to-use tool to predict if a patient has PHPT. Design: Retrospective analysis of two prospective cohorts...
May 2, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29726397/under-recognized-hypoparathyroidism-in-thalassemia
#11
Hataitip Tangngam, Pat Mahachoklertwattana, Preamrudee Poomthavorn, Ampaiwan Chuansumrit, Nongnuch Sirachainan, La-or Chailurkit, Patcharin Khlairit
OBJECTIVE: Symptomatic hypoparathyroidism [symptomatic hypocalcemia without elevated serum parathyroid hormone (PTH)] in patients with thalassemia is relatively rare. Asymptomatic mild hypocalcemia without elevated PTH which is considered hypoparathyroidism may be more common but under-recognized. METHODS: Sixty-six transfusion-dependent thalassemic patients, and 28 healthy controls were enrolled. Serum calcium (Ca), phosphate (P), creatinine (Cr), albumin, intact PTH, 25-hydroxyvitamin D (25-OHD), plasma intact fibroblast growth factor-23 (FGF-23), urine Ca, P and Cr were measured...
May 4, 2018: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29722847/dietary-acid-load-and-bone-turnover-during-long-duration-spaceflight-and-bed-rest
#12
Sara R Zwart, Barbara L Rice, Holly Dlouhy, Linda C Shackelford, Martina Heer, Matthew D Koslovsky, Scott M Smith
Background: Bed rest studies document that a lower dietary acid load is associated with lower bone resorption. Objective: We tested the effect of dietary acid load on bone metabolism during spaceflight. Design: Controlled 4-d diets with a high or low animal protein-to-potassium (APro:K) ratio (High and Low diets, respectively) were given to 17 astronauts before and during spaceflight. Each astronaut had 1 High and 1 Low diet session before flight and 2 High and 2 Low sessions during flight, in addition to a 4-d session around flight day 30 (FD30), when crew members were to consume their typical in-flight intake...
May 1, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29713359/hypercalciuria-and-febrile-convulsion-in-children-under-5-years-old
#13
Vahid Seddighi Gorabi, Bahram Nikkhoo, Obeidollah Faraji, Mona Mohammadkhani, Sattar Mirzaee, Mohammad Aziz Rasouli, Abdorrahim Afkhamzadeh
Purpose: The association between hypercalciuria and febrile convulsion is controversial. The present study aimed to investigate the statistical association between hypercalciuria and childhood febrile convulsions. Methods: Overall, 160 children aged 6 months to 5 years, including 80 children with febrile convulsion and 80 febrile children without convulsion (comparison group), were recruited. All laboratory tests, including 24-hour urine calcium, were undertaken in an academic clinical laboratory...
April 2018: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29696042/bone-metabolism-disorder-in-epileptic-children
#14
MAaryam Nakhaee Moghadam, Alireza Teimouri, Ali Khajeh, Seyed Bahare Hoseini
Objective: There are frequent anti-epileptic drugs used in management of epilepsy. Anti-epileptic drugs may have some complications on bone and vitamin D metabolism. This study aimed to comparison the bone metabolism disorder in epileptic children with healthy child in Zahedan, eastern Iran from Jul 2014 to Jun 2015. Materials & Methods: This case-control study was performed on bone metabolism disorder in epileptic children between 2014-2015. Forty epileptic children were enrolled based on accessibility scheme and 40 participants randomly selected for control group from those referred to the pediatric ward and clinic of Ali Ebn Abi Talib Hospital and Ali Asghar Clinic in Zahedan City, Sistan & Baluchestan Province, eastern Iran...
2018: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/29694631/humoral-hypercalcemia-of-pregnancy-treated-with-bisphosphonates
#15
Ronit Koren, Ortal Neeman, Shlomit Koren, Carlos A Benbassat
Hypercalcemia can be hazardous during pregnancy, most cases being due to primary hyperparathyroidism. We report a case of hypercalcemia with suppressed PTH levels necessitating treatment with bisphosphonates during pregnancy. A 38-year-old woman at the 26th week gestation was admitted because of symptomatic hypercalcemia. She did not take any medication that could influence her calcium levels. Physical examination was unremarkable. Laboratory tests on admission were: calcium 12.7 mg/dL (8.5-10.5 mg/dL), phosphorus 1...
February 2018: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29682741/calcium-sensing-receptor-gene-polymorphism-rs7652589-is-associated-with-calcium-nephrolithiasis-in-the-population-of-yi-nationality-in-southwestern-china
#16
Hao Li, Jianhua Zhang, Jiang Long, Jiarun Shi, Yuhui Luo
The calcium-sensing receptor (CaSR) gene plays an important role in regulating the Ca2+ balance and reducing the risk for calcium stones. In this study, we evaluated the association of CaSR polymorphisms with calcium nephrolithiasis in the population of Yi nationality in Southwestern China. Biochemical variables were evaluated in 624 calcium nephrolithiasis patients and 470 age-matched healthy controls without a history of nephrolithiasis. CaSR polymorphisms rs7652589, rs1501899, rs1801725 (Ala986Ser), rs1042636 (Arg990Gly) and rs1801726 (Gln1011Glu) were investigated between the calcium nephrolithiasis patients and healthy controls, using direct sequencing...
April 16, 2018: Annals of Human Genetics
https://www.readbyqxmd.com/read/29674364/health-and-prevention-enhancement-h-peace-a-retrospective-population-based-cohort-study-conducted-at-the-seoul-national-university-hospital-gangnam-center-korea
#17
Changhyun Lee, Eun Kyung Choe, Ji Min Choi, Yunji Hwang, Young Lee, Boram Park, Su Jin Chung, Min-Sun Kwak, Jong-Eun Lee, Joo Sung Kim, Sue Kyung Park, Sang-Heon Cho
PURPOSE: The Health and Prevention Enhancement (H-PEACE) study was designed to investigate the association of diagnostic imaging results, biomarkers and the predisease stage of non-communicable diseases (NCDs), such as malignancies and metabolic diseases, in an average-risk population in Korea. PARTICIPANTS: This study enrolled a large-scale retrospective cohort at the Healthcare System Gangnam Center, Seoul National University Hospital, from October 2003 to December 2014...
April 19, 2018: BMJ Open
https://www.readbyqxmd.com/read/29667913/ubiquitin-c-terminal-hydrolase-l1-deletion-is-associated-with-urinary-%C3%AE-klotho-deficiency-and-perturbed-phosphate-homeostasis
#18
Naomi C Boisvert, Chet E Holterman, Alexey Gutsol, Josee Coulombe, Wanling Pan, R Todd Alexander, Douglas A Gray, Chris R Kennedy
Loss of ubiquitin C-terminal hydrolase L1 (UCHL1), a deubiquitinating enzyme required for neuronal function, led to hyperphosphatemia accompanied by phosphaturia in mice, while calcium homeostasis remained intact. We therefore investigated the mechanisms underlying the phosphate imbalance in Uchl1-/- mice. Interestingly, phosphaturia was not a result of lower renal brush border membrane sodium-phosphate cotransporter expression as sodium-phosphate cotransporter 2a and 2c expression levels were similar to wild type levels...
April 18, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29656005/the-uricosuric-effects-of-dihydropyridine-calcium-channel-blockers-in-vivo-using-urate-under-excretion-animal-models
#19
Takayuki Hori, Motoshi Ouchi, Naoyuki Otani, Masakatsu Nohara, Asuka Morita, Yusuke Otsuka, Promsuk Jutabha, Ikuko Shibasaki, Yasushi Matsushita, Tomoe Fujita, Hirotsugu Fukuda, Naohiko Anzai
The purpose of this study was to create novel urate under-excretion animal models using pyrazinamide and to evaluate whether dihydropyridine calcium channel blockers (CCBs) have uricosuric effects in vivo. Adult male ICR mice were treated with pyrazinamide, vehicle (dimethyl sulfoxide: DMSO), or tap water. Thirty minutes later, pyrazinamide-treated mice were given benzbromarone, losartan, nilvadipine, nitrendipine, nifedipine or azelnidipine. Six hours after the second administration, urine (by urinary bladder puncture) and plasma were collected to measure uric acid and creatinine levels, and fractional excretion of uric acid (FEUA) and creatinine clearance (Ccr) were calculated and evaluated...
March 8, 2018: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29652871/calcium-creatinine-ratio-in-a-morning-urine-sample-for-the-estimation-of-hypercalciuria-associated-with-non-glomerular-hematuria-observed-in-children-and-adolescents
#20
Susana Quiñones-Vázquez, María Del Rosario Liriano-Ricabal, Sergio Santana-Porbén, José Reinaldo Salabarría-González
Background: Hypercalciuria might be revealed during the differential diagnosis of hematuria accompanying renal lithiasis (RL). In spite of this, diagnostic accuracy of calcium urinary excretion might be affected by incomplete 24-hour urine collections. In the present study, the diagnostic utility of calcium/creatinine (ICaCre) index for determining hypercalciuria associated with non-glomerular hematuria (NGH) and RL was assessed. Method: ICaCre (mg/mg) index was calculated from calcium (mmol/l) and creatinine (µmol/l) concentrations in an aliquot from a 24-hour urine collection in 169 children and adolescents with NGH or RL...
2018: Boletín Médico del Hospital Infantil de México
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