keyword
MENU ▼
Read by QxMD icon Read
search

Use of calcium excretion

keyword
https://www.readbyqxmd.com/read/28056732/development-of-a-radiolabeled-amlodipine-analog-for-l-type-calcium-channel-imaging
#1
Tahereh Firouzyar, Amir Reza Jalilian, Mohammad Reza Aboudzadeh, Hossein Sadeghpour, Mehrban Pooladi, Mahdi Shafiee-Ardestani, Ali Khalaj
PURPOSE: The non-invasive imaging and quantification of L-type calcium channels in living tissues is of great interest in diagnosis of congestive heart failure, myocardial hypertrophy, irritable bowel syndrome etc. METHODS: Technetium-<sup>99m</sup> labeled amlodipine conjugate ([<sup>99m</sup>Tc]-DTPA-AMLO) was prepared starting freshly eluted (<1 h) <sup>99m</sup>Technetium pertechnetate (86.5 MBq) and conjugated DTPA-AMLO at pH 5 in 30 min at room temperature in high radiochemical purity (>99%, RTLC; specific activity: 55-60 GBq/mmol)...
January 4, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28049663/reproducibility-of-urinary-biomarkers-in-multiple-24-h-urine-samples
#2
Qi Sun, Kimberly A Bertrand, Adrian A Franke, Bernard Rosner, Gary C Curhan, Walter C Willett
BACKGROUND: Limited knowledge regarding the reproducibility of biomarkers in 24-h urine samples has hindered the collection and use of the samples in epidemiologic studies. OBJECTIVE: We aimed to evaluate the reproducibility of various markers in repeat 24-h urine samples. DESIGN: We calculated intraclass correlation coefficients (ICCs) of biomarkers measured in 24-h urine samples that were collected in 3168 participants in the NHS (Nurses' Health Study), NHSII (Nurses' Health Study II), and Health Professionals Follow-Up Study...
January 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28042884/pharmacokinetics-of-the-antimicrobial-drug-sulfanilamide-is-altered-in-a-preclinical-model-of-vascular-calcification
#3
Anabel Brandoni, Adriana Mónica Torres
In vascular smooth muscle, calcium overload is linked to advancing age. The pharmacokinetics of sulfanilamide (SA), a compound with antibacterial properties, was evaluated in a preclinical model of vascular calcification. SA was used since it is useful to study possible modifications in the renal and hepatic management of drugs. Vascular calcification was induced by administration of a single high dose of vitamin D3 to rats (treated group) 10 days before the experiments. A parallel control group was processed...
January 2, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28013356/diuretic-effect-of-extracts-fractions-and-two-compounds-2%C3%AE-3%C3%AE-19%C3%AE-trihydroxy-urs-12-en-28-oic-acid-and-5-hydroxy-3-6-7-8-4-pentamethoxyflavone-from-rubus-rosaefolius-sm-rosaceae-leaves-in-rats
#4
Priscila de Souza, Thaise Boeing, Lincon Bordignon Somensi, Camile Cecconi Cechinel-Zanchett, Jairo Kenupp Bastos, Marcel Petreanu, Rivaldo Niero, Valdir Cechinel-Filho, Luisa Mota da Silva, Sérgio Faloni de Andrade
Although diuretics have been widely used to treat hypertension along with others cardiovascular and renal disorders, no scientific data have been recorded to support the diuretic properties of Rubus rosaefolius Sm. (Rosaceae), a plant popularly used in Brazil to treat hypertension. Male Wistar rats were orally treated with: vehicle; hydrochlorothiazide; aqueous (AERR) and methanolic (MERR) extracts; dichloromethane (DCM), hexane (HEX) and ethyl acetate (EA) fractions; and the isolated compounds 2α,3β,19α-trihydroxy-urs-12-en-28-oic acid (TUA) and 5-hydroxy-3,6,7,8,4'-pentamethoxyflavone (PMF)...
December 24, 2016: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/27940129/a-systematic-meta-analysis-on-the-efficacy-of-pre-clinically-tested-nephroprotectants-at-preventing-aminoglycoside-nephrotoxicity
#5
REVIEW
Laura Vicente-Vicente, Alfredo G Casanova, María Teresa Hernández-Sánchez, Moisés Pescador, Francisco J López-Hernández, Ana Isabel Morales
Nephrotoxicity limits the use of aminoglycoside antibiotics. Kidney damage is produced mainly in the renal tubule due to an inflammatory and oxidative process. At preclinical level, many drugs and natural products have been tested as prospective protectors of aminoglycoside nephrotoxicity. The main objective of this work was to make a systematic literature review of preclinical studies about aminoglycoside nephrotoxicity protection and a statistical analysis based on the meta-analysis methodology. Studies published up to January 2016 were identified...
December 8, 2016: Toxicology
https://www.readbyqxmd.com/read/27916815/changes-in-biochemical-parameters-of-the-calcium-phosphorus-homeostasis-in-relation-to-nutritional-intake-in-very-low-birth-weight-infants
#6
Viola Christmann, Charlotte J W Gradussen, Michelle N Körnmann, Nel Roeleveld, Johannes B van Goudoever, Arno F J van Heijst
Preterm infants are at significant risk to develop reduced bone mineralization based on inadequate supply of calcium and phosphorus (Ca-P). Biochemical parameters can be used to evaluate the nutritional intake. The direct effect of nutritional intake on changes in biochemical parameters has not been studied. Our objective was to evaluate the effect of Ca-P supplementation on biochemical markers as serum (s)/urinary (u) Ca and P; alkaline phosphatase (ALP); tubular reabsorption of P (TrP); and urinary ratios for Ca/creatinin (creat) and P/creatinin in Very-Low-Birth-Weight infants on Postnatal Days 1, 3, 5, 7, 10, and 14...
November 29, 2016: Nutrients
https://www.readbyqxmd.com/read/27915449/common-variants-in-cldn14-are-associated-with-differential-excretion-of-magnesium-over-calcium-in-urine
#7
REVIEW
Tanguy Corre, Eric Olinger, Sarah E Harris, Michela Traglia, Sheila Ulivi, Stefania Lenarduzzi, Hendrica Belge, Sonia Youhanna, Natsuko Tokonami, Olivier Bonny, Pascal Houillier, Ozren Polasek, Ian J Deary, John M Starr, Daniela Toniolo, Paolo Gasparini, Peter Vollenweider, Caroline Hayward, Murielle Bochud, Olivier Devuyst
The nature and importance of genetic factors regulating the differential handling of Ca(2+) and Mg(2+) by the renal tubule in the general population are poorly defined. We conducted a genome-wide meta-analysis of urinary magnesium-to-calcium ratio to identify associated common genetic variants. We included 9320 adults of European descent from four genetic isolates and three urban cohorts. Urinary magnesium and calcium concentrations were measured centrally in spot urine, and each study conducted linear regression analysis of urinary magnesium-to-calcium ratio on ~2...
January 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27915149/trans-and-paracellular-calcium-transport-along-the-small-and-large-intestine-in-horses
#8
M R Wilkens, L Marholt, N Eigendorf, A S Muscher-Banse, K Feige, B Schröder, G Breves, A Cehak
Intestinal calcium absorption plays a key role in the maintenance of calcium homeostasis and may either occur by paracellular or transcellular mechanisms. The horse has some unique peculiarities in calcium homeostasis compared to other species including a high absorptive capacity for calcium in the intestine, high plasma calcium concentrations, high renal excretion, and low plasma concentrations of vitamin D metabolites. So far, knowledge about the underlying mechanisms and the regulation of intestinal calcium absorption is still limited concerning this species...
February 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27914707/adiponectin-alters-renal-calcium-and-phosphate-excretion-through-regulation-of-klotho-expression
#9
Joseph M Rutkowski, Johanne Pastor, Kai Sun, Sun K Park, I Alexandru Bobulescu, Christopher T Chen, Orson W Moe, Philipp E Scherer
The kidney controls systemic calcium and phosphate levels and disturbances of its control mechanisms can lead to a variety of diseases. The insulin-sensitizing adipokine adiponectin is renoprotective and accelerates functional recovery following renal injury. However, unlike other adipokines, adiponectin is reduced in obesity. High adiponectin levels are also correlated with bone loss, suggestive of an additional action in mineral metabolism. Using knockout, wild-type, and adiponectin-overexpressing transgenic mice, we sought to identify the mechanistic basis for adiponectin's ability to regulate calcium and phosphate balance at the level of the kidney...
February 2017: Kidney International
https://www.readbyqxmd.com/read/27889417/dietary-zinc-and-incident-calcium-kidney-stones-in-adolescence
#10
Gregory E Tasian, Michelle E Ross, Lihai Song, Robert W Grundmeier, James Massey, Michelle R Denburg, Lawrence Copelovitch, Steven Warner, Thomas Chi, David W Killilea, Marshall L Stoller, Susan L Furth
PURPOSE: To determine the association between dietary zinc intake and incident calcium kidney stones and examine the relationship between dietary zinc intake and urinary zinc excretion among adolescents. MATERIAL AND METHODS: This study was a nested case-control study conducted within a large pediatric healthcare system. Three 24-hour dietary recalls and spot urine chemistries were obtained for 30 participants aged 12-18 years with a first idiopathic calcium-based kidney stone and 30 healthy controls, matched on age, sex, race, and month of enrollment...
November 23, 2016: Journal of Urology
https://www.readbyqxmd.com/read/27862274/risk-of-fracture-in-primary-aldosteronism-a-population-based-cohort-study
#11
Vin-Cent Wu, Chia-Hui Chang, Cheng-Yi Wang, Yen-Hung Lin, Tze-Wah Kao, Po-Chih Lin, Tzong-Shinn Chu, Yuan-Shian Chang, Likwang Chen, Kwan-Dun Wu, Shih-Chieh Jeff Chueh
Primary aldosteronism (PA) is associated with increased urinary calcium excretion and osteoporosis prevalence. We studied the long-term effect of hyperaldosterone on fracture risk and possible risk mitigation via treatments, by comparing PA patients and their essential hypertension (EH) counterparts extracted by propensity score match. We used a longitudinal population database from the Taiwan National Health Insurance, and used a validated algorithm to identify PA patients diagnosed in 1997-2010. Our sample included 2533 PA patients, including 921 patients with aldosterone-producing adenoma (APA)...
November 10, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27818277/comparison-of-the-effects-of-novel-vitamin-d-receptor-analog-vs-105-and-paricalcitol-on-chronic-kidney-disease-mineral-bone-disorder-in-an-experimental-model-of-chronic-kidney-disease
#12
Hideki Fujii, Yuriko Yonekura, Kentaro Nakai, Keiji Kono, Shunsuke Goto, Shinichi Nishi
When using vitamin D, the most important clinical problems are hypercalcemia, hyperphosphatemia, and vascular calcification. VS-105 is a novel vitamin D receptor (VDR) analog. In the present study, we compared the effects of VS-105 and paricalcitol on chronic kidney disease-mineral bone disorder (CKD-MBD) in a CKD rat model. We used male Sprague-Dawley (SD) rats and performed 5/6 nephrectomy at 8-9 weeks. At 10 weeks, the rats were classified into five groups and administered vehicle, low-dose paricalcitol (LP, 0...
November 3, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27815929/challenges-in-the-management-of-hypertension-in-older-populations
#13
Lisa Pont, Tariq Alhawassi
The prevalence of hypertension increases with age making it a significant health concern for older persons. Aging involves a range of physiological changes such as increases in arterial stiffness, widening pulse pressure, changes in renin and aldosterone levels, decreases in renal salt excretion, declining in renal function, changes in the autonomic nervous system sensitivity and function and changes to endothelial function all of which may not only affect blood pressure but may also affect individual response to pharmacotherapy used to manage hypertension and prevent end organ damage and other complications associated with poor blood pressure control...
November 5, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27813709/serum-1-25-dihydroxyvitamin-d-as-a-biomarker-of-the-absence-of-hypercalciuria-in-postsurgical-hypoparathyroidism
#14
Luis García-Pascual, María José Barahona, Verónica Perea, Rafael Simó
CONTEXT: Hypercalciuria is an adverse event of postsurgical hypoparathyroidism treatment which can lead to renal complications. The collection of 24-hour urine to detect hypercalciuria is often considered unreliable. OBJECTIVE: To find useful predictive biomarkers of hypercalciuria in patients with permanent postsurgical hypoparathyroidism under treatment with oral calcium and calcitriol supplements. DESIGN: Prospective cross-sectional study...
November 4, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27803672/autosomal-dominant-hypocalcemia-hypoparathyroidism-types-1-and-2
#15
REVIEW
Kelly L Roszko, Ruiye D Bi, Michael Mannstadt
Extracellular calcium is essential for life and its concentration in the blood is maintained within a narrow range. This is achieved by a feedback loop that receives input from the calcium-sensing receptor (CASR), expressed on the surface of parathyroid cells. In response to low ionized calcium, the parathyroids increase secretion of parathyroid hormone (PTH) which increases serum calcium. The CASR is also highly expressed in the kidneys, where it regulates the reabsorption of calcium from the primary filtrate...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27795978/smoking-habits-and-parathyroid-hormone-concentrations-in-young-adults-the-cardia-study
#16
Akira Fujiyoshi, Lynda E Polgreen, Myron D Gross, Jared P Reis, Stephen Sidney, David R Jacobs
Conflicting results have been reported concerning a relationship between smoking and serum PTH. Our study objective was to examine whether smoking was associated with serum PTH independent of correlates of PTH among young adults, and explore potential mechanisms. This was a cross-sectional study of healthy individuals, 24-36 years old, examined during 1992 through 1993 in California, USA (a subset of Coronary Artery Risk Development in Young Adults study). Linear regression was used to obtain adjusted means of PTH according to smoking habit (current, former, never)...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/27785747/is-chronic-alkali-therapy-in-orthotopic-ileal-neobladders-necessary-a-prospective-controlled-study
#17
Osama Mahmoud, Ahmed El-Assmy, Mohamed Kamal, Albeer Ashamallah, Hassan Abol-Enein
PURPOSE: To evaluate the necessity of chronic alkali therapy in non-complicated orthotopic ileal neobladders with normal renal function. MATERIALS AND METHODS: This is a prospective study that included 200 male patients who underwent radical cystectomy and ileal W neobladder for invasive bladder carcinoma between January 1993 and December 2013. The studied patients included 100 consecutive patients who were maintained on regular alkali therapy since surgery and 100 consecutive patients who stopped the use of alkali treatment after initial 3 months postoperative with minimum postoperative observation time of 1 year...
October 26, 2016: International Urology and Nephrology
https://www.readbyqxmd.com/read/27753966/os-10-05-association-of-aortic-pulse-wave-velocity-with-mineral-metabolism-factors-and-blood-pressure-in-untreated-chinese-patients
#18
Yi-Bang Cheng, Li-Hua Li, Qian-Hui Guo, Chang-Sheng Sheng, Qi-Fang Huang, Fei-Ka Li, Dong-Yan Zhang, Ji-Guang Wang, Yan Li
OBJECTIVE: Disorders of mineral metabolism predicted incidence of cardiovascular events in various clinical settings, possibly because that arterial stiffness mediate this pathway in part. We investigated the interrelationship between mineral metabolism factors and carotid-femoral PWV, and compared the effect sizes of blood pressure (BP) and mineral factors with carotid-femoral PWV in untreated Chinese. DESIGN AND METHOD: Consecutive untreated outpatients referred for ambulatory BP monitoring were recruited...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27744602/zinc-fractional-absorption-from-a-representative-diet-in-young-chinese-men-and-women-of-the-shandong-rural-region
#19
Cuiping Wang, Xinying Lin, Dongmei Guo, Lili Ding, Haifeng Guo, Guifa Xu, Xi Cui, Xia Wang
The objective of this study was to investigate the zinc fractional absorption of young Chinese men and women from the Shandong rural region under the routine dietary pattern by stable isotope technique. Ten men and 10 women, aged 20 to 35 years, and with a representative diet during the experiment were recruited from the Shandong rural region. Stable (67)Zn was used as a tracer to label ZnCl2, and Yb was used to monitor the excretion of (67)Zn in urine and feces. All volunteers were given rice containing 4...
October 15, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27733975/might-e-cadherin-promoter-polymorphisms-of-rs16260-and-rs5030625-associate-with-the-risk-of-nephrolithiasis
#20
Cigdem Donmez, Ece Konac, Batuhan T Aydogan, Cenk Y Bilen
PURPOSE: To study whether -160 C > A (rs16260) and -347 G > GA (rs5030625) single nucleotide polymorphisms of the regulatory region (rSNPs) of CDH1 gene modulate the risk of nephrolithiasis. METHODS: Genomic DNA of 101 patients with calcium oxalate nephrolithiasis and 114 healthy controls were screened for both polymorphisms, using polymerase chain reaction-restriction fragments length polymorphism method (PCR-RLFP). Haplotype frequencies were also analyzed...
2016: SpringerPlus
keyword
keyword
95930
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"