Read by QxMD icon Read

Use of calcium excretion

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
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
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
Daniel Turudic, Danica Batinic, Anja Tea Golubic, Mila Lovric, Danko Milosevic
: Diagnostic criteria for determination of inclination towards idiopathic calcium oxalate (CaOx) urolithiasis based on biochemical urine parameters are not sufficiently well defined in children. The aim of this study was to determine the risk of CaOx urolithiasis in children from concentrations of calcium, oxalate, citrate, and glycosaminoglycans in urine and their ratios, all standardized in respect to creatinine. We collected and analyzed 24-h urine samples of children with CaOx urolithiasis (n = 61) and compared with urine samples of matched control group of healthy children (n = 25)...
October 11, 2016: European Journal of Pediatrics
David A Bushinsky, David M Spiegel, Coleman Gross, Wade W Benton, Jeanene Fogli, Kathleen M Hill Gallant, Charles Du Mond, Geoffrey A Block, Matthew R Weir, Bertram Pitt
BACKGROUND AND OBJECTIVES: Patiromer is a nonabsorbed potassium-binding polymer that uses calcium as the counterexchange ion. The calcium released with potassium binding has the potential to be absorbed or bind phosphate. Because binding is not specific for potassium, patiromer can bind other cations. Here, we evaluate the effect of patiromer on urine ion excretion in healthy adults, which reflects gastrointestinal ion absorption. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We analyzed the effect of patiromer on urine potassium, sodium, magnesium, calcium, and phosphate in two studies...
September 27, 2016: Clinical Journal of the American Society of Nephrology: CJASN
Thérèse Sergent, Karine Croizet, Yves-Jacques Schneider
SCOPE: Silicon is one of the most abundant trace elements in the body. Although pharmacokinetics data described its absorption from the diet and its body excretion, the mechanisms involved in the uptake and transport of silicon across the gut wall have not been established. METHODS AND RESULTS: Caco-2 cells were used as a well-accepted in vitro model of the human intestinal epithelium to investigate the transport, across the intestinal barrier in both the absorption and excretion directions, of silicon supplied as orthosilicic acid stabilized by vanillin (OSA-VC)...
September 27, 2016: Molecular Nutrition & Food Research
Xingsheng Li, Melissa L Ellis, Alexander E Dowell, Ranjit Kumar, Casey D Morrow, Trenton R Schoeb, John Knight
: Colonization with Oxalobacter formigenes may reduce the risk of calcium oxalate kidney stone disease. To improve our limited understanding of host/O.formigenes and microbe/O.formigenes interactions, germ-free or altered Schaedler flora (ASF) mice were colonized with O.formigenes Germ-free mice were stably colonized with O.formigenes suggesting O.formigenes does not require other organisms to sustain its survival. Examination of intestinal material indicated no viable O.formigenes in the small intestine, ∼4 × 10(6) O...
September 23, 2016: Applied and Environmental Microbiology
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
Rikako Hiramatsu, Yoshifumi Ubara
Bisphoshonate is largely used for treatment of osteoporosis in general population. The gastrointestinal absorption is poor and it can be excreted via only kidney. Therefore, CKD patients can accumulate a higher dose of bisphosphonate in their body. Although the primary action of bisphosphonate is the inhibition of bone resorption, it secondary suppresses bone formation, which can often lead to adynamic bone disease in patients with CKD. In CKD patients who still have normal parathyroid hormone, calcium, and phosphate levels, randomized trials showed the similar effects as in non-CKD patients;however, in patients with CKD stage 4 and dialysis patients, data are very limited and the benefits and safety has remained unclear...
September 2016: Clinical Calcium
Katia Maruca, Ilaria Brambilla, Alessandra Mingione, Lorenzo Bassi, Silvia Capelli, Caterina Brasacchio, Laura Soldati, Mariangela Cisternino, Stefano Mora
Autosomal Dominant Hypocalcemia (ADH) is an endocrine disorder due to activating mutations of the calcium-sensing receptor (CASR) gene. We report on a young boy who presented low serum calcium with hypercalciuria, hyperphosphatemia and low serum concentration of parathyroid hormone, not accompanied by classic clinical signs of hypocalcemia. Treatment with calcitriol and calcium did not normalize serum calcium and renal calcium excretion. The use of thiazide diuretics slightly reduced calciuria. Despite high calcium excretion, no signs of nephrocalcinosis were detected...
August 22, 2016: Molecular and Cellular Endocrinology
Corrado Vitale, Francesca Bermond, Amelia Rodofili, Giorgio Soragna, Cristina Marcuccio, Alberto Tricerri, Martino Marangella
Primary hyperparathyroidism (PHPT) may favor nephrolithiasis mainly through an increase in calcium and phosphate urinary excretion. Cinacalcet exhibits good efficacy to control hypercalcemia in PHPT, but it is not so far known whether it might be a useful tool to prevent stone recurrences. Of 67 patients with PHPT and recurrent nephrolithiasis, 55 underwent parathyroidectomy (PTX) and 12, not eligible to PTX, were prescribed Cinacalcet. All the patients were evaluated for mineral metabolism, including estimation of state of saturation for calcium oxalate (CaOx) and brushite (bsh), both at baseline and after either PTX or Cinacalcet...
July 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
Andy Fox, Rodney Gilbert
AIM: We report the effective use of the synthetic parathyroid hormone (PTH) teriparatide to treat a 4 year old boy with autosomal dominant hypocalcaemia. BACKGROUND: Autosomal Dominant hypocalcaemia is characterised by hypocalcaemia with a lack of parathyroid hormone (PTH) response and inappropriately high urinary calcium excretion. It is caused by gain-of-function mutations in the extracellular calcium sensing receptor which then "over-reads" the extracellular fluid concentration of calcium resulting in suppression of PTH secretion...
September 2016: Archives of Disease in Childhood
R F Geddes, V Biourge, Y Chang, H M Syme, J Elliott
BACKGROUND: Dietary phosphate and protein restriction decreases plasma PTH and FGF-23 concentrations and improves survival time in azotemic cats, but has not been examined in cats that are not azotemic. HYPOTHESIS: Feeding a moderately protein- and phosphate-restricted diet decreases PTH and FGF-23 in healthy older cats and thereby slows progression to azotemic CKD. ANIMALS: A total of 54 healthy, client-owned cats (≥ 9 years). METHODS: Prospective double-blinded randomized placebo-controlled trial...
September 2016: Journal of Veterinary Internal Medicine
Priyesh Chauhan, Neil J Gittoes, Tarekegn Geberhiwot
A man aged 72 years with long-standing primary hyperparathyroidism (HPT), a background of recurrent bilateral renal stones and failed parathyroid surgery is described. During the 27 months preceding treatment, episodes of renal colic became increasingly frequent and he required multiple surgical interventions. Given the lack of medical therapies to definitively treat his symptoms, he was started on a trial of the calcimimetic, Cinacalcet. Cinacalcet has previously been shown to reduce hypercalcaemia in patients with primary HPT...
2016: BMJ Case Reports
Jihae Chung, Ignacio Granja, Michael G Taylor, Giannis Mpourmpakis, John R Asplin, Jeffrey D Rimer
Crystalline materials are crucial to the function of living organisms, in the shells of molluscs, the matrix of bone, the teeth of sea urchins, and the exoskeletons of coccoliths. However, pathological biomineralization can be an undesirable crystallization process associated with human diseases. The crystal growth of biogenic, natural and synthetic materials may be regulated by the action of modifiers, most commonly inhibitors, which range from small ions and molecules to large macromolecules. Inhibitors adsorb on crystal surfaces and impede the addition of solute, thereby reducing the rate of growth...
August 25, 2016: Nature
Mohammadreza Vafa, Sepideh Soltani, Farid Zayeri, Mahtab Niroomand, Azadeh Najarzadeh
BACKGROUND: The results of the studies on the effects of sodium on bone metabolism have been inconsistent. There is no definitive answer to the question of whether sodium restriction can be associated with a lower incidence of osteoporosis. What reinforces the necessity of designing this study is the lack of findings with the approach of examining the effects of sodium on bone in our country. METHODS: This was a cross-sectional study conducted on 185 retired female teachers aged 45 to 70...
2016: Medical Journal of the Islamic Republic of Iran
Fredric L Coe, Elaine M Worcester, Andrew P Evan
The most common presentation of nephrolithiasis is idiopathic calcium stones in patients without systemic disease. Most stones are primarily composed of calcium oxalate and form on a base of interstitial apatite deposits, known as Randall's plaque. By contrast some stones are composed largely of calcium phosphate, as either hydroxyapatite or brushite (calcium monohydrogen phosphate), and are usually accompanied by deposits of calcium phosphate in the Bellini ducts. These deposits result in local tissue damage and might serve as a site of mineral overgrowth...
September 2016: Nature Reviews. Nephrology
Chuanming Xu, Aihua Lu, Hong Wang, Hui Fang, Li Zhou, Peng Sun, Tianxin Yang
(Pro)renin receptor (PRR) is highly expressed in the distal nephron with unclear functional implication. The present study was conducted to explore a potential role of renal PRR during high K+ (HK) loading. In normal Sprague-Dawley rats, a 1-week HK intake increased renal expression of full-length PRR and urinary excretion of soluble PRR (sPRR). Administration of PRO20, a decoy peptide antagonist of PRR, to K+-loaded animals elevated plasma K+ level and decreased urinary K+ excretion, accompanied with suppressed aldosterone excretion...
July 20, 2016: American Journal of Physiology. Renal Physiology
M L Guzman, E A Soria, C Laino, R H Manzo, M E Olivera
Novel complexes consisting of Eudragit E100-risedronate are presented. The oral bioavailability of risedronate in rats was determined through its percentage excreted in urine after administration of complexed or free risedronate in fed and fasted conditions. The evaluation of the risedronate gastro-duodenal irritation potential was carried out by macroscopic and histological analyses in an experimental rat model. The degree of counterionic condensation between Eudragit E100 and risedronate was assessed by dialysis with, mechanistic information about the interaction with calcium and the release of risedronate from the complexes being obtained using physiological solution and simulated gastric fluid without pepsin...
October 2016: European Journal of Pharmaceutics and Biopharmaceutics
Robert Farkaš, Ludmila Pečeňová, Lucia Mentelová, Milan Beňo, Denisa Beňová-Liszeková, Silvia Mahmoodová, Václav Tejnecký, Otakar Raška, Pavel Juda, Silvie Svidenská, Matúš Hornáček, Bruce A Chase, Ivan Raška
The Drosophila salivary glands (SGs) were well known for the puffing patterns of their polytene chromosomes and so became a tissue of choice to study sequential gene activation by the steroid hormone ecdysone. One well-documented function of these glands is to produce a secretory glue, which is released during pupariation to fix the freshly formed puparia to the substrate. Over the past two decades SGs have been used to address specific aspects of developmentally-regulated programmed cell death (PCD) as it was thought that they are doomed for histolysis and after pupariation are just awaiting their fate...
August 2016: Development, Growth & Differentiation
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"