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https://www.readbyqxmd.com/read/29043208/phosphaturic-mesenchymal-tumor-pmt-exceptionally-rare-disease-yet-crucial-not-to-miss
#1
Amir Ghorbani-Aghbolaghi, Morgan Angus Darrow, Tao Wang
Phosphaturic mesenchymal tumors (PMTs) are very rare tumors which are frequently associated with Tumor Induced Osteomalacia (TIO), a paraneoplastic syndrome that manifests as renal phosphate wasting. The tumor cells produce a peptide hormone-like substance known as fibroblast growth factor 23 (FGF23), a physiologic regulator of phosphate levels. FGF23 decreases proximal tubule reabsorption of phosphates and inhibits 1-α-hydroxylase, which reduces levels of 1-α, 25-dihydroxyvitamine D3. Thus, overexpression of FGF23 by the tumor cells leads to increased excretion of phosphate in the urine, mobilization of calcium and phosphate from bones, and the reduction of osteoblastic activity, ultimately resulting in widespread osteomalacia...
July 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/29035440/impact-of-ph-on-urine-chemistry-assayed-on-roche-analyzers
#2
R Cohen, R Alkouri, I Tostivint, S Djiavoudine, F Mestari, S Dever, G Atlan, C Devilliers, F Imbert-Bismut, D Bonnefont-Rousselot, D Monneret
BACKGROUND: The pH may impact the concentration of certain urinary parameters, making urine pre-treatment questionable. METHODS: 1) Determining the impact of pH in vitro on the urinary concentration of chemistry parameters assayed on Roche Modular analyzers. 2) Evaluating whether concentrations depended on pH in non-pretreated urines from patients. RESULTS: 1) The optimal urinary pH values for each measurement were: 6.3 ± 0.8 (amylase), < 5...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29035195/effects-of-fasting-during-the-month-of-ramadan-on-renal-function-in-patients-with-autosomal-dominant-polycystic-kidney-disease%C3%A2
#3
Iskender Ekinci, Reha Erkoc, Meltem Gursu, Elif Ece Dogan, Elif Kilic, Egemen Cebeci, Savas Ozturk, Rumeyza Kazancioglu
BACKGROUND: In this study, we aimed to examine the impact of fasting during the month of Ramadan on autosomal dominant polycystic kidney disease (-ADPKD) patients with normal to near-normal glomerular filtration rate (GFR). MATERIALS AND METHODS: This was a prospective observational study of patients with ADPKD, the majority of whom had normal or near-normal GFR. Patients were divided into two groups: the fasting group (FG) and the nonfasting group (NFG). Assessments in the NFG were performed 1 week before and 1 month after Ramadan, while FG patients were assessed on the last day of fasting in addition to the abovementioned visits...
October 16, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29017699/urinary-calcium-excretion-and-bone-turnover-in-osteoporotic-patients%C3%A2
#4
Amr El-Husseini, Amit Chakraborty, Qingcong Yuan, Saqib Inayatullah, Heather Bush, B Peter Sawaya
INTRODUCTION: It is well documented that patients with osteoporosis (OP) have high incidence of hypercalciuria (HC). However, the mechanism of HC in patients with OP is not well established. It is thought to be the result of high bone turnover (HBT) with excessive bone resorption. OP also frequently presents with low bone turnover (LBT). At this time, it is not clear whether OP with LBT is also associated with hypercalciuria. PURPOSE: The purpose of this study is to evaluate urinary calcium excretion in osteoporotic patients with HBT and LBT...
October 11, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28971740/physicochemical-and-microbiological-characterization-of-human-feces-and-urine-from-composting-toilets-in-abidjan-c%C3%A3-te-d-ivoire
#5
K R Effebi, G T Ballet, M A Seka, D T Baya, B L N'takpe
We assessed the physicochemical and microbiological properties of composting toilets products in Abidjan, (Côte d'Ivoire) for their potential use in agriculture. Samples of urine and feces were collected and analysed after 123 days of storage in plastic cans (urine) and 8 months of storage in closed composting bags (feces). Selected physicochemical parameters (ammonium, phosphorus, potassium, calcium, magnesium, cadmium, copper, lead and zinc) and pathogens (bacteria and helminths eggs) were monitored. Results showed that temperature and pH values were 26...
October 3, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28948826/hormonal-and-bone-parameters-in-pubertal-girls
#6
V Cirmanova, I Zofkova, P Kasalicky, V Lanska, M Bayer, L Starka, R Kanceva
Here we analyzed associations between muscles mass, total bone mineral content (BMC), lumbar spine bone density (BMD L1-L4) and serum or urine hormones in healthy peripubertal girls. Total BMC and areal BMD L1-L4, muscle mass and fat were measured by dual-energy X-ray absorptiometry (DXA). Muscle force (N) was estimated by a dynamometer. Circulating estradiol, follicle-stimulating hormone (FSH), luteinizing hormone (LH), 25-hydroxy vitamin D, parathyroid hormone (PTH), insulin-like growth factor 1 (IGF-1), leptin, osteocalcin, bone isoenzyme of alkaline phosphatase (bALP) and total calcium and phosphorus were quantified as the nocturnal melatonin and serotonin urinary excretion...
September 26, 2017: Physiological Research
https://www.readbyqxmd.com/read/28940108/cytoprotective-effects-of-the-red-marine-alga-chondrus-canaliculatus-against-maneb-induced-hematotoxicity-and-bone-oxidative-damages-in-adult-rats
#7
Imen Jaballi, Hajer Ben Saad, Intidhar Bkhairia, Boutheina Cherif, Choumous Kallel, Ons Boudawara, Michael Droguet, Christian Magné, Ahmed Hakim, Ibtissem Ben Amara
The current study aimed at evaluating the ability of a mineral and antioxidant-rich extract from Chondrus canaliculatus to improve maneb (MB)-induced toxicity in adult rat. The animals were divided into four groups: group 1 used as a control group, group 2 received MB, group 3 received MB + C. canaliculatus extract, and group 4 received only the algal extract. MB, a Mn-containing ethylene-bis-dithiocarbamate fungicide, induced oxidative stress damages, mineral perturbations in the plasma, urine, and bone, and genotoxicity in rats...
September 22, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28933510/-unusual-case-of-struvite-urolithiasis-in-a-dog-a-case-report-ein-fallbericht
#8
Julia K Mack, Ellen Kienzle
A dog was referred for nutrition consultation after surgical removal of struvite uroliths from the bladder. Inspection of the dog's current ration revealed a pronounced vitamin-A deficiency together with a marked deficiency of protein, phosphorus and magnesium. Therefore, a supersaturation of the urine with ammonium, magnesium and phosphate, the three constituents of struvite, as a cause of struvite calculi formation appears rather unlikely. Vitamin-A deficiency can promote urinary infections and consequently struvite stone formation because of the lack of the protective effect of vitamin A on the epithelia of the urinary tract...
September 20, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28875008/renal-hemosiderosis-among-iranian-transfusion-dependent-%C3%AE-thalassemia-major-patients
#9
Mozhgan Hashemieh, Mitra Radfar, Azita Azarkeivan, Seyed Mohammad Taghi Hosseini Tabatabaei, Sedigheh Nikbakht, Mehdi Yaseri, Kourosh Sheibani
Background: In recent years, the success in management of thalassemic patients, has allowed for some previously unrecognized complications including renal abnormalities to emerge. This prospective study aimed to investigate kidney iron overload by means of MRI T2* and also renal function based on laboratory tests for early markers of glomerular and tubular dysfunction among adult Iranian transfusion-dependent thalassemia major patients. Subjects and Methods: Two-hundred and two patients with transfusion-dependent β-thalassemia major were included in this study in Zafar Adult Thalassemia Center, Tehran, Iran...
April 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/28866091/variation-in-sodium-intake-and-intra-individual-change-in-blood-pressure-in-chronic-kidney-disease
#10
Chetna M Pathak, Joachim H Ix, Cheryl A M Anderson, Tyler B Woodell, Gerard Smits, Martha S Persky, Geoffrey A Block, Dena E Rifkin
OBJECTIVE: In the kidney disease clinic setting, higher-than-usual blood pressure is often ascribed to recent dietary sodium indiscretion. While clinical trials demonstrate a clear relationship between salt intake and blood pressure on the population level, it is uncertain whether real-world variation in sodium intake within individual chronic kidney disease (CKD) patients is associated with fluctuations in blood pressure. METHODS: We analyzed data from the Phosphorus Normalization Trial, in which participants with CKD eating their usual diets completed at least three 24-hour urine collections over 9 months, from which we measured sodium...
August 30, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/28836089/risk-factors-for-sodium-valproate-induced-renal-tubular-dysfunction
#11
Satoko Koga, Takahisa Kimata, Sohsaku Yamanouchi, Shoji Tsuji, Ken Yoshimura, Atsushi Araki, Kazunari Kaneko
OBJECTIVE: To explore the risk factors for the development of sodium valproate (VPA)-induced renal tubular dysfunction for early diagnosis and treatment. STUDY DESIGN: The subjects were selected from patients who were diagnosed with epilepsy and administered VPA. Blood and spot urine samples were collected and measured the concentration of VPA, the level of serum phosphorus, serum uric acid, serum free carnitine, serum cystatin-c, and urine β2-microglobulin (BMG)...
August 23, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28809621/cardiovascular-risk-factors-and-mortality-in-children-with-chronic-kidney-disease
#12
Abdullahi Mudi, Caroline Dickens, Cecil Levy, Daynia Ballot
BACKGROUND: Cardiovascular disease (CVD) begins early in children with chronic kidney disease (CKD), and its progression is determined by the presence of single or multiple cardiovascular risk factors (CVRFs). OBJECTIVE: To determine the prevalence of CVRFs in children with CKD and their association with mortality in children on chronic dialysis. METHODS: This comparative cross-sectional study recruited children aged 5 - 18 years with all stages of CKD...
July 28, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28753729/safety-evaluation-of-green-tea-polyphenols-consumption-in-middle-aged-ovariectomized-rat-model
#13
Chwan-Li Shen, Gordon Brackee, Xiao Song, Michael D Tomison, VelvetLee Finckbone, Kelly T Mitchell, Lili Tang, Ming-Chien Chyu, Dale M Dunn, Jia-Sheng Wang
This work evaluates chronic safety in middle-aged ovariectomized rats supplemented with different dosages of green tea polyphenols (GTP) in drinking water. The experiment used 6-mo-old sham (n = 39) and ovariectomized (OVX, n = 143) female rats. All sham (n = 39) and 39 of the OVX animals received no GTP treatment and their samples were collected for outcome measures at baseline, 3 mo, and 6 mo (n = 13 per group for each). The remaining OVX animals were randomized into 4 groups receiving 0.15%, 0.5%, 1%, and 1...
July 28, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28728874/profile-of-chronic-kidney-disease-related-mineral-bone-disorders-in-newly-diagnosed-advanced-predialysis-diabetic-kidney-disease-patients-a-hospital-based-cross-sectional-study
#14
S Ray, A M Beatrice, A Ghosh, S Pramanik, R Bhattacharjee, S Ghosh, A Raychaudhury, S Mukhopadhyay, S Chowdhury
AIM: Chronic kidney disease related-mineral bone disorder (CKD-MBD) has been poorly studied in pre-dialysis Indian CKD population. There are limited data on the pattern of these disturbances in diabetic CKD patients. Therefore, a study was conducted to find out the profile of mineral bone disorders in T2DM patients with pre-dialysis CKD. METHODS: In this cross-sectional design, diabetic patients with newly-diagnosed stage 4 and 5 CKD were evaluated. Serum levels of calcium, phosphorus, intact parathyroid hormone (iPTH), 25 hydroxy vitamin D and total alkaline phosphatase (ALP) were measured in all patients...
July 8, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28690207/hypophosphatemia-after-hepatectomy-or-pancreatectomy-role-of-the-nicotinamide-phosphoribosyltransferase
#15
Jian Zheng, Ilya G Glezerman, Eran Sadot, Anjuli McNeil, Cristina Zarama, Mithat Gönen, John Creasy, Linda M Pak, Vinod P Balachandran, Michael I D'Angelica, Peter J Allen, Ronald P DeMatteo, T Peter Kingham, William R Jarnagin, Edgar A Jaimes
BACKGROUND: Postoperative hypophosphatemia is common and is associated with a lower risk of liver failure after hepatectomy, but higher morbidity after pancreatectomy. Whether different physiologic mechanisms underlie the hypophosphatemia associated with these very different clinical outcomes is unclear. This study aims to evaluate the underlying mechanism in postoperative hypophosphatemia. STUDY DESIGN: We prospectively enrolled 120 patients who underwent major hepatectomy (n = 30), minor hepatectomy (n = 30), pancreatectomy (n = 30), and laparotomy without resection (control group, n = 30)...
October 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28683234/long-term-bone-health-after-roux-en-y-gastric-bypass-a-pilot-study
#16
Fiona Jackson Cook, Ila Khanna, Jennifer Giordano, Laura Matarese, Suzanne Hudson
OBJECTIVE: This cross sectional study was undertaken to assess metabolic bone disease by examining bone mineral density (BMD), fracture prevalence, and nutritional factors pertinent to bone in a cohort >9 years post Roux-en-Y gastric bypass (RYGB). METHODS: Fifty one subjects 9.4-36.0 years (mean 17.0 +8.1) post RYGB provided a focused history. Dietary calcium and protein were assessed. Dual energy X ray absorptiometry (DXA) BMD at the spine, hip, and radius and routine serum chemistries, magnesium, phosphorus, parathyroid hormone, vitamin D, vitamin K, and micronutrients were analyzed...
July 6, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28679474/a-comparison-of-micro-perc-and-retrograde-intrarenal-surgery-results-in-pediatric-patients-with-renal-stones
#17
Haluk Sen, Ilker Seckiner, Omer Bayrak, Kazim Dogan, Sakip Erturhan
INTRODUCTION: With advancements in endoscopic surgery, open surgical techniques for urinary system stones have paved the way for the application of less invasive treatment modalities in patients with pediatric kidney stone disease. These treatment options include extracorporeal shock wave lithotripsy (ESWL), percutaneous nephrolithotomy (PCNL), and retrograde intrarenal surgery (RIRS). OBJECTIVE: We aimed to compare the efficacy and safety of RIRS and micro-PCNL techniques in the surgical treatment of kidney stones in pediatric patients...
June 19, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28679143/varying-patterns-of-biomarkers-of-mineral-and-bone-metabolism-after-kidney-transplantation
#18
Agnieszka Makówka, Maciej Głyda, Ewa-Rutkowska Majewska, Michał Nowicki
Sclerostin inhibits Wnt/β-catenin signaling pathway, thereby decreasing bone formation. Osteoblast stimulating actions of parathyroid hormone (PTH) are mediated by suppression of sclerostin. Thus, sclerostin may reflect both bone metabolism and parathyroid function. The study was aimed to analyze the patterns of the changes of mineral and bone biomarkers for 9 months following kidney transplantation (KTx). Thirty-five patients after KTx were included into a 9-month observational study. Serum creatinine, calcium, phosphorus, 25-OH vitamin D, PTH, fibroblast growth factor 23 (FGF-23), sclerostin, and bone-specific alkaline phosphatase (BAP) were measured before KTx, and 1, 2 weeks, and 1, 2, 3, 4, 5, 6, and 9 months thereafter...
August 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28667925/serum-fibroblast-growth-factor-23-concentrations-in-dogs-with-chronic-kidney-disease
#19
Keren E Dittmer, Kalyani C Perera, Peter A Elder
The aim of this study was to determine if serum fibroblast growth factor (FGF23) concentrations were increased in dogs with chronic kidney disease (CKD). Serum samples submitted to a commercial laboratory were collected over a 15-month period, 14 samples were from dogs with a history of polyuria/polydipsia, azotaemia and low urine specific gravity, 20 samples were from non-azotaemic dogs. Serum FGF23, parathyroid hormone, total calcium and phosphorus, urea and creatinine were measured. Mann-Whitney test was used to determine differences between non-azotaemic and CKD groups; a one-way ANOVA with Tukey pairwise comparisons was used to determine any differences between International Renal Interest Society stages; and regression models were used to determine predictors of International Renal Interest Society stage, serum phosphorus and FGF23 concentrations...
June 23, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28660848/effects-of-rapeseed-meal-fiber-content-on-phosphorus-and-calcium-digestibility-in-growing-pigs-fed-diets-without-or-with-microbial-phytase
#20
M Bournazel, M Lessire, M J Duclos, M Magnin, N Même, C Peyronnet, E Recoules, A Quinsac, E Labussière, A Narcy
The optimization of dietary phosphorus (P) and calcium (Ca) supply requires a better understanding of the effect of dietary fiber content of co-products on the digestive utilization of minerals. This study was designed to evaluate the effects of dietary fiber content from 00-rapeseed meal (RSM) on P and Ca digestibility throughout the gastrointestinal tract in growing pigs fed diets without or with microbial phytase. In total, 48 castrated male pigs (initial BW=36.1±0.4 kg) were housed in metabolic crates for 29 days...
June 29, 2017: Animal: An International Journal of Animal Bioscience
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