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High urine calcium

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https://www.readbyqxmd.com/read/28555925/functional-severity-of-clcnkb-mutations-correlates-with-phenotypes-in-patients-with-classic-bartter-s-syndrome
#1
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/28550437/hyperoxaluria-in-a-model-of-mini-gastric-bypass-surgery-in-rats
#2
Milene S Ormanji, Fernando Korkes, Renata Meca, Crysthiane S R A Ishiy, Gustavo H C Finotti, Renato R N Ferraz, Ita P Heilberg
BACKGROUND: Bariatric surgery is associated with hyperoxaluria hence predisposing to nephrolithiasis. The present study aimed to investigate the underlying mechanisms contributing to increased urinary oxalate in a mini-gastric bypass (MGB) surgery model in rats under different dietary conditions. The expression of intestinal oxalate transporters was also evaluated. METHODS: Male rats underwent MGB (n = 21) or Sham procedure (n = 21) and after recovery were fed a standard or high-fat diet with or without oxalate for 8 weeks...
May 26, 2017: Obesity Surgery
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
#3
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/28542241/signification-of-distal-urinary-acidification-defects-in-hypocitraturic-patients
#4
Valentina Forni Ogna, Anne Blanchard, Rosa Vargas-Poussou, Adam Ogna, Stéphanie Baron, Jean-Philippe Bertocchio, Caroline Prot-Bertoye, Jérôme Nevoux, Julie Dubourg, Gérard Maruani, Margarida Mendes, Alejandro Garcia-Castaño, Cyrielle Treard, Nelly Lepottier, Pascal Houillier, Marie Courbebaisse
BACKGROUND AND OBJECTIVES: Hypocitraturia has been associated with metabolic acidosis and mineral disorders. The aim of this study was to investigate the occurrence of urinary acidification defects underlying hypocitraturia. MATERIALS AND METHODS: This retrospective observational study included 67 patients (32 men), aged 40.7±15.1 years with hypocitraturia (<1.67 mmol/24-h) and nephrolithiasis, nephrocalcinosis, and/or bone demineralization, referred to our center from 2000 to 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28529700/effect-of-citrus-based-products-on-urine-profile-a-systematic-review-and-meta-analysis
#5
Fakhri Rahman, Ponco Birowo, Indah S Widyahening, Nur Rasyid
Background. Urolithiasis is a disease with high recurrence rate, 30-50% within 5 years. The aim of the present study was to learn the effects of citrus-based products on the urine profile in healthy persons and people with urolithiasis compared to control diet and potassium citrate.  Methods. A systematic review was performed, which included interventional, prospective observational and retrospective studies, comparing citrus-based therapy with standard diet therapy, mineral water, or potassium citrate. A literature search was conducted using PUBMED, COCHRANE, and Google Scholar with "citrus or lemonade or orange or grapefruit or lime or juice" and "urolithiasis" as search terms...
2017: F1000Research
https://www.readbyqxmd.com/read/28494178/suicide-attempt-with-self-made-taxus-baccata-leaf-capsules-survival-following-the-application-of-extracorporeal-membrane-oxygenation-for-ventricular-arrythmia-and-refractory-cardiogenic-shock
#6
Fanny Vardon Bounes, Elsa Tardif, Stéphanie Ruiz, Jean-Christophe Gallart, Jean-Marie Conil, Clément Delmas
CONTEXT: Yew intoxication has been known for many years; high dose ingestion of Taxus baccata leads to cardiac toxicity mediated by calcium and sodium channel blocking properties. We present a case report of a patient who attempted suicide after T. baccata ingestion, causing refractory cardiogenic shock requiring temporary circulatory assistance by veno-arterial extra corporeal membrane oxygenation (VA ECMO). CASE DETAILS: A 28-year-old man was admitted to the critical care unit of a university hospital for arrhythmia after ingestion of self-made T...
May 11, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28460910/organic-acids-in-kakadu-plum-terminalia-ferdinandiana-the-good-ellagic-the-bad-oxalic-and-the-uncertain-ascorbic
#7
David J Williams, David Edwards, Sharon Pun, Mridusmita Chaliha, Brian Burren, Ujang Tinggi, Yasmina Sultanbawa
The phenolic ellagic acid (EA) is receiving increasing attention for its nutritional and pharmacological potential as an antioxidant and antimicrobial agent. The Australian native Kakadu plum (Terminalia ferdinandiana) fruit is an abundant source of this phytochemical. The fruit also contains large amounts of vitamin C (mainly as ascorbic acid, AA) and possibly the undesirable oxalic acid (OA). Regular consumption of high oxalate foods poses a variety of health risks in humans including interference with calcium absorption and kidney stone formation...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28458168/a-rapid-method-for-estimation-of-pu-isotopes-in-urine-samples-using-high-volume-centrifuge
#8
Ranjeet Kumar, D D Rao, Rupali Dubla, J R Yadav
The conventional radio-analytical technique used for estimation of Pu-isotopes in urine samples involves anion exchange/TEVA column separation followed by alpha spectrometry. This sequence of analysis consumes nearly 3-4 days for completion. Many a times excreta analysis results are required urgently, particularly under repeat and incidental/emergency situations. Therefore, there is need to reduce the analysis time for the estimation of Pu-isotopes in bioassay samples. This paper gives the details of standardization of a rapid method for estimation of Pu-isotopes in urine samples using multi-purpose centrifuge, TEVA resin followed by alpha spectrometry...
April 20, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28446830/bryophyllum-pinnatum-leaf-extracts-prevent-formation-of-renal-calculi-in-lithiatic-rats
#9
Mahendra Yadav, Vijay D Gulkari, Manish M Wanjari
BACKGROUND: Bryophyllum pinnatum, commonly known as Pattharcaṭṭa, is used traditionally in ethnomedicinal practices for the treatment of kidney stone and urinary insufficiency. AIM: The present study evaluated the effect of Bryophyllum pinnatum on ethylene glycol (EG)-induced renal calculi in rats. MATERIALS AND METHODS: Renal calculi were induced in rats by administration of 0.75% EG in drinking water and co-treated orally with standard drug, Cystone (750 mg/kg), or alcoholic and hydro-alcoholic extracts in doses of 100, 200 and 400 mg/kg for 28 days...
October 2016: Ancient Science of Life
https://www.readbyqxmd.com/read/28443950/chronic-kidney-disease-determinants-of-progression-and-cardiovascular-risk-progredir-cohort-study-design-and-methods
#10
Maria Alice Muniz Domingos, Alessandra Carvalho Goulart, Paulo Andrade Lotufo, Isabela Judith Martins Benseñor, Silvia Maria de Oliveira Titan
CONTEXT AND OBJECTIVE: Chronic kidney disease (CKD) has become an important public health issue. The socioeconomic burden of renal replacement therapy (RRT) is very high, as is CKD-related cardiovascular mortality and morbidity. Preventive and therapeutic measures only have modest impact and more research is needed. Few cohort studies have been conducted on populations with CKD. Our aim was to establish a cohort that would include more advanced forms of CKD (stages 3 and 4). Data collection was focused on renal and cardiovascular parameters...
March 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28435765/chronic-nephropathy-from-dietary-hyperoxaluria-sustained-improvement-of-renal-function-after-dietary-intervention
#11
Yijuan Sun, Bruce L Horowitz, Karen S Servilla, Joanna R Fair, Darlene Vigil, Kavitha Ganta, Larry Massie, Antonios H Tzamaloukas
A 56-year-old man with stable chronic kidney disease (CKD) for two years following a single episode of calcium oxalate urolithiasis developed progressive elevation of his serum creatinine concentration. Urinalysis revealed pyuria and white cell casts, a few red blood cells, minimal proteinuria, and no crystals. Urine culture was sterile. Gallium scintigraphy was consistent with interstitial nephritis. Proton pump inhibitor intake was discontinued, and a short course of oral corticosteroids was initiated. Percutaneous kidney biopsy, performed because of the continued deterioration of renal function to a minimum estimated glomerular filtration rate (eGFR) value of 15 mL/min per 1...
March 20, 2017: Curēus
https://www.readbyqxmd.com/read/28427913/predicting-the-stone-composition-of-children-preoperatively-by-hounsfield-unit-detection-on-non-contrast-computed-tomography
#12
Mesut Altan, Burak Çitamak, Ali Cansu Bozaci, Altan Güneş, Hasan Serkan Doğan, Mithat Haliloğlu, Serdar Tekgül
INTRODUCTION: Many studies have been performed on adult patients to reveal the relationship between Hounsfield unit (HU) value and composition of stone, but none have focused on childhood. OBJECTIVE: We aimed to predict stone composition by HU properties in pre-intervention non-contrast computed tomography (NCCT) in children. This could help to orient patients towards more successful interventions. MATERIALS AND METHODS: Data of 94 children, whose pre-intervention NCCT and post-interventional stone analysis were available were included...
March 31, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28402956/elevated-dietary-magnesium-during-pregnancy-and-postnatal-life-prevents-ectopic-mineralization-in-enpp1asj-mice-a-model-for-generalized-arterial-calcification-of-infancy
#13
Joshua Kingman, Jouni Uitto, Qiaoli Li
Generalized arterial calcification of infancy (GACI) is an autosomal recessive disorder caused by mutations in the ENPP1 gene. It is characterized by mineralization of the arterial blood vessels, often diagnosed prenatally, and associated with death in early childhood. There is no effective treatment for this devastating disorder. We previously characterized the Enpp1asjmutant mouse as a model of GACI, and we have now explored the effect of elevated dietary magnesium (five-fold) in pregnant mothers and continuing for the first 14 weeks of postnatal life...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28365270/calcium-to-citrate-ratio-distinguishes-solitary-and-recurrent-urinary-stone-forming-children
#14
William DeFoor, Elizabeth Jackson, Marion Schulte, Zaheer Alam, John Asplin
PURPOSE: The prevalence of urinary stone disease is increasing in children. We previously reported a high rate of urinary metabolic abnormalities, including hypercalciuria and hypocitraturia, in stone forming children. In this study we determined whether calcium-to-citrate ratio could help predict those at risk for recurrent stone formation. MATERIALS AND METHODS: We conducted a retrospective cohort study to assess calcium-to-citrate ratios in children with urolithiasis...
March 30, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28342973/effects-of-a-sustained-release-formulation-of-1-25-dihydroxyvitamin-d3-glycosides-for-milk-fever-prevention-on-serum-1-25-dihydroxyvitamin-d3-calcium-and-phosphorus-in-dairy-cows
#15
Heinrich Bachmann, Michael Lanz, Susanne Kehrle, Wolfgang Bittner, Annick Toggenburger, Georg A Mathis, Walter Rambeck
Milk fever (MF) is a metabolic disease in dairy cows around parturition. The clinical lead sign is muscular paresis leading in severe cases to paralysis of the affected animal. Multiparturient animals of high performing dairy breeds are most likely to be affected and have a high probability of recurrence. An acute drop in blood calcium levels causes the disease when the demand for calcium at the onset of lactation exceeds the ability to replete blood calcium levels through mobilization from bone and intestinal uptake...
March 23, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28323043/high-dose-vitamin-d-may-improve-lower-urinary-tract-symptoms-in-postmenopausal-women
#16
Johanna Oberg, Margareta Verelst, Rolf Jorde, Kevin Cashman, Guri Grimnes
Lower urinary tract symptoms (LUTS) are common in postmenopausal women, and have been reported inversely associated with vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D levels. The aim of this study was to investigate if high dose vitamin D supplementation would affect LUTS in comparison to standard dose. In a randomized controlled study including 297 postmenopausal women with low bone mineral density, the participants were allocated to receive capsules of 20 000 IU of vitamin D3 twice a week (high dose group) or similar looking placebo (standard dose group)...
March 17, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28314883/stone-former-urine-proteome-demonstrates-a-cationic-shift-in-protein-distribution-compared-to-normal
#17
Ann M Kolbach-Mandel, Neil S Mandel, Brian R Hoffmann, Jack G Kleinman, Jeffrey A Wesson
Many urine proteins are found in calcium oxalate stones, yet decades of research have failed to define the role of urine proteins in stone formation. This urine proteomic study compares the relative amounts of abundant urine proteins between idiopathic calcium oxalate stone forming and non-stone forming (normal) cohorts to identify differences that might correlate with disease. Random mid-morning urine samples were collected following informed consent from 25 stone formers and 14 normal individuals. Proteins were isolated from urine using ultrafiltration...
March 17, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28224220/calcium-intake-in-winter-pregnancy-attenuates-impact-of-vitamin-d-inadequacy-on-urine-ntx-a-marker-of-bone-resorption
#18
Eileen C O'Brien, Mark T Kilbane, Malachi J McKenna, Ricardo Segurado, Aisling A Geraghty, Fionnuala M McAuliffe
PURPOSE: Pregnancy is characterised by increased bone turnover, but high bone turnover with resorption exceeding formation may lead to negative maternal bone remodelling. Recent studies are conflicting regarding the effect of calcium on skeletal health in pregnancy. The aim of this study was to examine the seasonal effect of serum 25-hydroxyvitamin D (25OHD) and dietary calcium on a marker of bone resorption. METHODS: This was prospective study of 205 pregnant women [two cohorts; early pregnancy at 13 weeks (n = 96), and late pregnancy at 28 weeks (n = 109)]...
February 21, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28221139/how-do-stones-form-is-unification-of-theories-on-stone-formation-possible
#19
Victoria Y Bird, Saeed R Khan
There are two basic pathways for formation of calcium based kidney stones. Most idiopathic calcium oxalate (CaOx) stones are formed in association with sub-epithelial plaques of calcium phosphate (CaP), known as Randall's plaques, on renal papillary surfaces. Crystal formation and retention within the terminal collecting ducts, the ducts of Bellini, leading to the formation of Randall's plugs, is the other pathway. Both pathways require supersaturation leading to crystallization, regulated by various crystallization modulators produced in response to changing urinary conditions...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28220601/multiple-sclerosis-and-nephrolithiasis-a-matched-case-comparative-study
#20
Vishnu Ganesan, Wen Min Chen, Rajat Jain, Shubha De, Manoj Monga
OBJECTIVE: To compare stone composition and serum/urine biochemistries in stone formers with multiple sclerosis (MS) against stone formers without MS and to examine the association between mobility, methods of bladder emptying, and stone formation. PATIENTS AND METHODS: In this retrospective case-control study, we identified patients diagnosed with MS and kidney stone disease who were seen at our institution between 2001 and 2016. For the first part of the study, up to two controls (stone formers without a history of MS) were identified for each case and matched on age, body mass index, and sex...
June 2017: BJU International
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