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Use of calcium excretion

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https://www.readbyqxmd.com/read/28628402/calcium-bioavailability-from-mineral-waters-with-different-mineralization-in-comparison-to-milk-and-a-supplement
#1
Theresa Greupner, Inga Schneider, Andreas Hahn
OBJECTIVE: The aim of the present study was to compare the bioavailability of calcium from 3 mineral waters with different concentrations of minerals with that of milk and a calcium supplement. METHODS: A single-center, randomized controlled trial with a crossover design with 21 healthy men and women was conducted at the Institute of Food Science and Human Nutrition, Leibniz University Hannover. The participants consumed the 5 test products providing 300 mg of calcium each on 5 examination days with 1-week wash-out phases in between...
June 19, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28623397/different-effects-of-%C3%AE-linolenic-acid-gla-supplementation-on-plasma-and-red-blood-cell-phospholipid-fatty-acid-composition-and-calcium-oxalate-kidney-stone-risk-factors-in-healthy-subjects-from-two-race-groups-with-different-risk-profiles-pose-questions-about
#2
Allen L Rodgers, Dalielah Jappie-Mahomed, Paul J van Jaarsveld
Fatty acid (FA) composition of phospholipids in plasma and red blood cells (RBC) can influence calciuria, oxaluria and renal stone formation. In this regard, the ratio of arachidonic acid (AA) and its precursor linoleic acid (LA) appears to be important. Administration of γ-linolenic acid (GLA) has been shown to increase the concentration of dihomo-gamma linoleic acid (DGLA) relative to AA indicating that it may attenuate biosynthesis of the latter. Such effects have not been investigated in race groups having difference stone occurrence rates...
June 16, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28615947/treatment-of-secondary-hyperparathyroidism-the-clinical-utility-of-etelcalcetide
#3
REVIEW
Mario Cozzolino, Andrea Galassi, Ferruccio Conte, Michela Mangano, Luca Di Lullo, Antonio Bellasi
Secondary hyperparathyroidism (SHPT), a very frequent, severe, and worsening complication of chronic kidney disease, is characterized by high serum parathyroid hormone (PTH), parathyroid gland hyperplasia, and disturbances in mineral metabolism. Clinically, SHPT shows renal osteodystrophy, vascular calcification, cardiovascular damage, and fatal outcome. Calcium-sensing receptor (CaSR) is the main physiological regulator of PTH secretion; its activation by calcium rapidly inhibits PTH. Another important player in regulating mineral metabolism is vitamin D receptor (VDR), which is under the influence of vitamin D and influences the intestinal absorption of calcium and phosphate, PTH gene expression, and bone calcium mobilization...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28585182/lime-powder-treatment-reduces-urinary-excretion-of-total-protein-and-transferrin-but-increases-uromodulin-excretion-in-patients-with-urolithiasis
#4
Piyaratana Tosukhowong, Pimsuda Kulpradit, Sakdithep Chaiyarit, Wattanachai Ungjareonwattana, Nuttiya Kalpongnukul, Supoj Ratchanon, Visith Thongboonkerd
Our previous study has shown that lime powder (LP) had an inhibitory effect against calcium oxalate stone formation. However, the precise mechanisms underlying such beneficial effect remained unclear. Our present study thus aimed to address the effect of LP on excretory level and compositions of urinary proteins using a proteomics approach. From a total of 80 calcium oxalate stone formers recruited into our 2-year randomized clinical trial of LP effect, 10 patients with comparable age and clinical parameters were selected for this proteomic study...
June 5, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28576907/low-bone-density-and-bisphosphonate-use-and-the-risk-of-kidney-stones
#5
Megan Prochaska, Eric Taylor, Anand Vaidya, Gary Curhan
BACKGROUND AND OBJECTIVES: Previous studies have demonstrated lower bone density in patients with kidney stones, but no longitudinal studies have evaluated kidney stone risk in individuals with low bone density. Small studies with short follow-up reported reduced 24-hour urine calcium excretion with bisphosphonate use. We examined history of low bone density and bisphosphonate use and the risk of incident kidney stone as well as the association with 24-hour calcium excretion. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We conducted a prospective analysis of 96,092 women in the Nurses' Health Study II...
June 2, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28567512/total-flavonoids-of-desmodium-styracifolium-attenuates-the-formation-of-hydroxy-l-proline-induced-calcium-oxalate-urolithiasis-in-rats
#6
Jianfu Zhou, Jing Jin, Xiong Li, Zhongxiang Zhao, Lei Zhang, Qian Wang, Jing Li, Qiuhong Zhang, Songtao Xiang
Desmosium styracifolium (D. styracifolium), which is considered as a Chinese herbal medicine, has been reported to treat the kidney stone diseases. However, the potential phytochemically active components and the underlying mechanisms associated with its efficacy in targeting urolithiasis remain to be elucidated. This study aims to investigate the anti-urolithiatic effect of total flavonoids of D. styracifolium (TFDS) on calcium oxalate (CaOx) renal stones in Sprague-Dawley rats. Animal models of CaOx urolithiasis were established in male Sprague-Dawley rats by adding 5% w/w hydroxy-L-proline (HLP) in regular rat chow...
May 31, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28555925/functional-severity-of-clcnkb-mutations-correlates-with-phenotypes-in-patients-with-classic-bartter-s-syndrome
#7
Chih-Jen Cheng, Yi-Fen Lo, Jen-Chi Chen, Chou-Long Huang, Shih-Hua Lin
Mutations in CLCNKB gene encoding human voltage-gated chloride ClC-Kb (hClC-Kb) channel cause classic Bartter's syndrome (BS). In contrast to antenatal BS, classic BS manifests highly variable phenotypes. The functional severity of mutant channel has been proposed to explain this phenomenon. Due to difficulties in the expression of hClC-Kb in heterologous expression systems, the functional consequences of mutant channels haven't been thoroughly examined, and the genotype-phenotype association hasn't been established...
May 27, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28553597/efficacy-of-teriparatide-in-patients-with-hypoparathyroidism-a-prospective-open-label-study
#8
Vimal Upreti, Shrikant Somani, Narendra Kotwal
CONTEXT: Conventional treatment of hypoparathyroidism with calcium, Vitamin D analogs, and thiazide diuretics is often suboptimal, and these patients have poor quality of life. Teriparatide (parathyroid hormone 1-34 [PTH (1-34)]), an amide of PTH, is widely available for the use in osteoporosis; however, its use in hypoparathyroidism is limited. AIMS: The aim of this study is to evaluate the efficacy of PTH (1-34) in the treatment of patients with hypoparathyroidism...
May 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28546877/amino-acid-medical-foods-provide-a-high-dietary-acid-load-and-increase-urinary-excretion-of-renal-net-acid-calcium-and-magnesium-compared-with-glycomacropeptide-medical-foods-in-phenylketonuria
#9
Bridget M Stroup, Emily A Sawin, Sangita G Murali, Neil Binkley, Karen E Hansen, Denise M Ney
Background. Skeletal fragility is a complication of phenylketonuria (PKU). A diet containing amino acids compared with glycomacropeptide reduces bone size and strength in mice. Objective. We tested the hypothesis that amino acid medical foods (AA-MF) provide a high dietary acid load, subsequently increasing urinary excretion of renal net acid, calcium, and magnesium, compared to glycomacropeptide medical foods (GMP-MF). Design. In a crossover design, 8 participants with PKU (16-35 y) provided food records and 24-hr urine samples after consuming a low-Phe diet in combination with AA-MF and GMP-MF for 1-3 wks...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28529642/tumor-triggered-drug-release-from-calcium-carbonate-encapsulated-gold-nanostars-for-near-infrared-photodynamic-photothermal-combination-antitumor-therapy
#10
Yanlei Liu, Xiao Zhi, Meng Yang, Jingpu Zhang, Lingnan Lin, Xin Zhao, Wenxiu Hou, Chunlei Zhang, Qian Zhang, Fei Pan, Gabriel Alfranca, Yuming Yang, Jesús M de la Fuente, Jian Ni, Daxiang Cui
Different stimulus including pH, light and temperature have been used for controlled drug release to prevent drug inactivation and minimize side-effects. Herein a novel nano-platform (GNS@CaCO3/ICG) consisting of calcium carbonate-encapsulated gold nanostars loaded with ICG was established to couple the photothermal properties of gold nanostars (GNSs) and the photodynamic properties of indocyanine green (ICG) in the photodynamic/photothermal combination therapy (PDT/PTT). In this study, the calcium carbonate worked not only a drug keeper to entrap ICG on the surface of GNSs in the form of a stable aggregate which was protected from blood clearance, but also as the a pH-responder to achieve highly effective tumor-triggered drug release locally...
2017: Theranostics
https://www.readbyqxmd.com/read/28501403/use-of-calcitriol-to-maintain-postpartum-blood-calcium-and-improve-immune-function-in-dairy-cows
#11
A Vieira-Neto, I R P Lima, F Lopes, C Lopera, R Zimpel, L D P Sinedino, K C Jeong, K Galvão, W W Thatcher, C D Nelson, J E P Santos
Our objectives were to determine the effects of an injectable formulation of calcitriol on mineral metabolism and immune function in postpartum Holstein cows that received an acidogenic diet prepartum to minimize hypocalcemia. In experiment 1, cows within 6 h of calving received calcitriol (0, 200, or 300 μg) to determine the dose needed to increase plasma concentrations of Ca; 300 μg was sufficient to sustain Ca for at least 3 d. In experiment 2, multiparous cows were assigned randomly to receive only vehicle (control, n = 25) or 300 μg of calcitriol (n = 25) subcutaneously within the first 6 h after calving...
July 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28464092/reducing-mineral-usage-in-feedlot-diets-for-nellore-cattle-ii-impacts-of-calcium-phosphorus-copper-manganese-and-zinc-contents-on-intake-performance-and-liver-and-bone-status
#12
L F Prados, D F T Sathler, B C Silva, D Zanetti, S C Valadares Filho, H M Alhadas, E Detmann, S A Santos, L D S Mariz, M L Chizzotti
Weaned Nellore bulls ( = 36; 274 ± 34 kg) were used in a randomized block design with a 2 × 2 factorial arrangement of treatments to evaluate intake, fecal excretion, and performance with different concentrations of minerals. Experimental diets were formulated with 2 concentrations of Ca and P (macromineral factor; diet supplying 100% of Ca and P according to BR-CORTE () [CaP+] or diet without limestone and dicalcium phosphate [CaP-]) and 2 concentrations of microminerals (micromineral factor; diet with supplementation of microminerals [Zn, Mn, and Cu; CuMnZn+] or diet without supplementation of microminerals [Zn, Mn, and Cu; CuMnZn-])...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28464082/reducing-mineral-usage-in-feedlot-diets-for-nellore-cattle-i-impacts-of-calcium-phosphorus-copper-manganese-and-zinc-contents-on-microbial-efficiency-and-ruminal-intestinal-and-total-digestibility-of-dietary-constituents
#13
D F T Sathler, L F Prados, D Zanetti, B C Silva, S C Valadares Filho, M V C Pacheco, P M Amaral, L N Rennó, M F Paulino
This study evaluated intake, microbial efficiency, and ruminal, small and large intestinal, and total digestibility of DM, OM, CP, and NDF, as well as availability of Ca, P, Mg, Na, K, Cu, Mn, and Zn in Zebu cattle fed with or without supplemental sources of Ca and P or a micromineral premix. Five rumen- and ileum-cannulated Nellore bulls (BW = 200 ± 10.5 kg; 9 mo) were used in the experiment, distributed in a 5 × 5 Latin square design. The experiment was developed in a 2 × 2 + 1 factorial design to measure the effects of mineral supplementation on intake, digestibility, and site of nutrient absorption...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28442523/a-detailed-comparison-of-morning-and-random-urine-specimen-levels-with-24-hour-urinary-excretion-levels-of-seven-biochemical-parameters-with-a-proposed-formula
#14
Ziba Shojaei-Far, Farideh Razi, Fatemeh Bandarian, Camelia Rambod, Mostafa Qorbani
This study aimed to evaluate the validity of the suggested method (SM) to estimate the urinary level of seven biochemical parameters within 24 hours with an innovative formula using morning and random urine specimens. A total of 133 clients referring to the laboratory of the Endocrinology & Metabolism Research Institute, Tehran University of Medical Sciences, participated voluntarily in the investigation with providing three urine samples of 24-hour, morning and random. Seven biochemical parameters (calcium, phosphorus, urea, creatinine, uric acid, microalbumin and protein) were measured in all three samples...
March 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28441892/changes-in-blood-and-urinary-cadmium-levels-and-bone-mineral-density-according-to-osteoporosis-medication-in-individuals-with-an-increased-cadmium-body-burden
#15
S-Y Eom, D-H Yim, S-M Hong, Y-D Kim, H Kim, B-S Choi, J-D Park, C-H Park, G-B Kim, S-D Yu
The aim of this study was to assess changes in bone mineral density (BMD) and cadmium (Cd) levels in blood and urine in individuals living in a Cd-contaminated area according to the type of osteoporosis medication over a three-year period. This follow-up study included 204 residents living in the vicinity of a closed copper refinery, who had been found to have elevated urinary or blood Cd levels. Cd levels in the blood and urine, as well as BMD, were measured every 6 months. After the first BMD measurement, individuals were prescribed antiresorptives such as alendronate or vitamin D and calcium, according to their BMD...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28422036/physicochemical-factors-of-the-urine-of-children-with-hypercalciuria
#16
Mercedes Ubetagoyena-Arrieta, Jorge Martínez Sáenz de Jubera, María Nieves Corera-Casty, Eduardo González Pérez-Yarza, Irati García-Albizua
OBJECTIVE: Hypercalciuria is a common lithogenic risk factor. The aim of this study was, first, to study the characteristics of urine biochemical factors of children with hypercalciuria (HC) and compare them with those of children without hypercalciuria. Second, to analyze the differences between children with HC and lithiasis (HCL) and children with HC and no lithiasis (HCNL). METHODS: The sample was composed by 111 cases with HC, divided into 2 groups: HCNL group, consisting of 93 cases with no personal history of kidney stones, and HCL group, 18 cases with personal history of kidney stones...
April 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28410612/milk-protein-based-formulas-containing-different-oils-affect-fatty-acids-balance-in-term-infants-a-randomized-blinded-crossover-clinical-trial
#17
Carolina Oliveira de Souza, Maria Efigênia Q Leite, John Lasekan, Geraldine Baggs, Lorena Silva Pinho, Janice Izabel Druzian, Tereza Cristina M Ribeiro, Ângela P Mattos, José A Menezes-Filho, Hugo Costa-Ribeiro
BACKGROUND: Palm olein is used in infant formula fat blends in order to match the fatty acid profile of human milk. While the effects on fatty acid balance have been evaluated, the use of palm olein in combination with palm kernel oil and supplementation with docosahexaenoic acid (DHA) and arachidonic acid (ARA) has not been similarly assessed in infants. This study evaluated the effects of infant formulas containing different fat compositions on the balance of fat, fatty acids, and calcium...
April 14, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28384348/de-novo-transcriptome-analysis-of-the-excretory-tubules-of-carausius-morosus-phasmatodea-and-possible-functions-of-the-midgut-appendices
#18
Matan Shelomi
The Malpighian tubules are the insect excretory organs, responsible for ion and water homeostasis and elimination of nitrogenous wastes. Post-genomic assays suggest they also metabolize and detoxify xenobiotic compounds and have antimicrobial properties. The Phasmatodea have an additional, unique set of excretory organs referred to predominantly as midgut appendices. Their function and how it compares to phasmid and other insect Malpighian tubules is unknown. Hypotheses include carbonic anhydrase activity, calcium and metal cation sequestration, and xenobiotic transport...
2017: PloS One
https://www.readbyqxmd.com/read/28383779/factors-influencing-pre-operative-urinary-calcium-excretion-in-primary-hyperparathyroidism
#19
Reto M Kaderli, Philipp Riss, Angelika Geroldinger, Andreas Selberherr, Christian Scheuba, Bruno Niederle
OBJECTIVE: Normal or elevated 24-hour urinary calcium (Ca) excretion is a diagnostic marker in primary hyperparathyroidism (PHPT). It is used to distinguish familial hypocalciuric hypercalcaemia (FHH) from PHPT by calculating the Ca/creatinine clearance ratio (CCCR). The variance of CCCR in patients with PHPT is considerable. The aim of this study was to analyse the parameters affecting CCCR in patients with PHPT. DESIGN: The data were collected prospectively. Patients with sporadic PHPT undergoing successful surgery were included in a retrospective analysis...
April 6, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28369876/a-systematic-review-and-meta-analysis-of-hypocalciuria-in-pre-eclampsia
#20
REVIEW
Kristen M McMaster, Andrew M Kaunitz, Prardhana Burbano de Lara, Luis Sanchez-Ramos
BACKGROUND: Small observational studies have demonstrated that pre-eclampsia is associated with hypocalciuria. OBJECTIVES: To compare urinary calcium excretion in pre-eclampsia, gestational hypertension, and chronic hypertension with that in normotensive pregnancies. SEARCH STRATEGY: Online databases were searched through February 2016 using medical subject headings "calcium homeostasis," "calcium excretion," "hypocalciuria," and "pre-eclampsia...
March 31, 2017: International Journal of Gynaecology and Obstetrics
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