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Calcium metabolism

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https://www.readbyqxmd.com/read/28748897/milk-alkali-syndrome-induced-by-h1n1-influenza-vaccine
#1
Abdullah K Al-Hwiesh, Ibrahiem Saeed Abdul-Rahman, Nadia Al-Oudah, Sana Al-Solami, Fahd A Al-Muhanna
Milk-Alkali syndrome (MAS) consists of a triad of hypercalcemia, metabolic alkalosis, and acute renal failure. We hereby report a 75-year-old Indian gentleman who presented to our emergency department with a history of generalized weakness and easy fatigability. Investigations were consistent with MAS secondary to calcium carbonate and calcitriol treatment to prevent osteoporosis, aggravated by H1N1 influenza vaccine. The patient was treated with hemodialysis and zoledronate. To our knowledge, this is the first reported case of such association in the literature...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748891/study-of-chronic-kidney-disease-mineral-bone-disorders-in-newly-detected-advanced-renal-failure-patients-a-hospital-based-cross-sectional-study
#2
Praveen Kumar Etta, R K Sharma, Amit Gupta
We aim to evaluate the disturbances in mineral metabolism, abnormalities in bone mineral density (BMD), and extraskeletal calcification in newly detected, untreated predialysis stage 4 and 5 chronic kidney disease (CKD) patients at a tertiary care hospital in North India. This is cross-sectional observational study. A total of 95 (68 males, 27 females) newly detected patients underwent clinical evaluation, biochemical assessment [serum calcium, phosphorus, alkaline phosphatase (ALP), albumin, creatinine, intact parathyroid hormone (iPTH), 25- hydroxyvitamin D (25(OH)D)], BMD measurement (at spine, hip, and forearm) by dual-energy X-ray absorptiometry (DXA), lateral abdominal radiograph [for abdominal aortic calcification (AAC)], skeletal survey (to look for any abnormality including fractures), and echocardiography [for any cardiac valvular calcification (CVC)]...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28748194/recurrent-metatarsal-fractures-in-postmenopausal-woman-with-low-serum-alkaline-phosphatase-a-rare-diagnosis-not-to-miss
#3
Umair Iqbal, Hafsa Anwar, Ahmad Chaudhary, Madiha Alvi, Amy Freeth
Hypophosphatasia (HPP) is a rare inborn error of metabolism due to a loss-of-function mutation in the gene for tissue nonspecific isoenzyme of alkaline phosphatase (ALP) that results in low levels of ALP. The clinical presentation of HPP is variable and in adults can easily be misdiagnosed as other forms of osteomalacia. We present a case of a 53-year-old Caucasian female who was evaluated for recurrent metatarsal fractures. She reported her first metatarsal fracture at age 21, and since then had at least 8 more metatarsal fractures over her lifetime, most without injury other than weight bearing...
July 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28746873/deletion-of-glut1-and-glut3-reveals-multiple-roles-for-glucose-metabolism-in-platelet-and-megakaryocyte-function
#4
Trevor P Fidler, Robert A Campbell, Trevor Funari, Nicholas Dunne, Enrique Balderas Angeles, Elizabeth A Middleton, Dipayan Chaudhuri, Andrew S Weyrch, E Dale Abel
Anucleate platelets circulate in the blood to facilitate thrombosis and diverse immune functions. Platelet activation leading to clot formation correlates with increased glycogenolysis, glucose uptake, glucose oxidation, and lactic acid production. Simultaneous deletion of glucose transporter (GLUT) 1 and GLUT3 (double knockout [DKO]) specifically in platelets completely abolished glucose uptake. In DKO platelets, mitochondrial oxidative metabolism of non-glycolytic substrates, such as glutamate, increased...
July 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28746808/effects-of-kisspeptin-on-diabetic-rat-platelets
#5
Zsófia Mezei, Sándor Váczi, Viktória Török, Csaba Stumpf, Rita Ónody, Imre Földesi, Gyula Szabó
Hyperglycemia, hyperlipidemia and free radicals result in platelet activation and atherogenesis. Kisspeptin (KP) is able to regulate metabolism, hemostasis and the development of atherosclerosis. We examined whether platelet aggregation of streptozotocin-induced diabetic rats depends on the inducer type and if KP-13 and RF-9 (a kisspeptin receptor modifier) can influence platelet function. We measured the speed and the maximum of aggregation, along with the area under the curve. Serum glucose and calcium levels and urine formation of diabetic animals increased, while the body weight and platelet count decreased...
July 26, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28746172/a-genetic-variant-in-the-catechol-o-methyl-transferase-comt-gene-is-related-to-age-dependent-differences-in-the-therapeutic-effect-of-calcium-channel-blockers
#6
Jiayue Xu, Adrian E Boström, Mohamed Saeed, Raghvendra K Dubey, Gérard Waeber, Peter Vollenweider, Pedro Marques-Vidal, Jessica Mwinyi, Helgi B Schiöth
Hypertension is the leading risk factor for cardiovascular disease and one of the major health concerns worldwide. Genetic factors impact both the risk for hypertension and the therapeutic effect of antihypertensive drugs. Sex- and age-specific variances in the prevalence of hypertension are partly induced by estrogen. We investigated 6 single nucleotide polymorphisms in genes encoding enzymes involved in estrogen metabolism in relation to sex- and age-specific differences in the systolic and diastolic blood pressure (SBP and DBP) outcome under the treatment of diuretics, calcium-channel blockers (CCBs), angiotensin-converting-enzyme inhibitors, and angiotensin-receptor blockers (ARBs)...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28745686/-effects-of-keto-amino-acids-and-a-low-protein-diet-on-the-nutritional-status-of-patients-with-stages-3b-4-chronic-kidney-disease
#7
S Yu Milovanova, Yu S Milovanov, M V Taranova, I A Dobrosmyslov
AIM: To evaluate the efficacy of keto/amino acids in maintaining protein balance and preventing mineral metabolic disturbances and the development of uremic hyperparathyroidism in the long-term use of a low-protein diet (LPD) in patients with Stages 3B-4 chronic kidney disease (CKD). SUBJECTS AND METHODS: Ninety patients with CKD caused by chronic latent glomerulonephritis in 65 patients and chronic tubulointerstitial nephritis of various etiologies (gout, drug-induced, and infection) in 25 were examined...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28745417/secondary-metabolite-production-from-industrially-relevant-bacteria-is-enhanced-by-organic-nanofibers
#8
Maria Moffa, Daniela Pasanisi, Elisa Scarpa, Anna Rita Marra, Pietro Alifano, Dario Pisignano
Streptomycetes are exploited for the production of a wide range of secondary metabolites, including antibiotics. Therefore, both academic and industrial research efforts are focused on enhancing production of these precious metabolites. So far, this has been mostly achieved by classical or recombinant genetic techniques, in association with process optimization for either submerged or solid state fermentation. New cultivation approaches addressing the natural mycelial growth and life cycle would allow the biosynthetic potential of filamentous strains to be much better exploited...
July 26, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28744949/identification-of-a-new-mineralized-tissue-in-the-notochord-of-reared-siberian-sturgeon-acipenser-baerii
#9
Amandine Leprévost, Thierry Azaïs, Michael Trichet, Jean-Yves Sire
In a study aiming to improve knowledge on the mineralization of the axial skeleton in reared Siberian sturgeon (Acipenser baerii Brandt, 1869), we discovered a new mineralized tissue within the notochord. To our knowledge, such a structure has never been reported in any vertebrate species with the exception of the pathological mineralization of the notochord remains in degenerative intervertebral disks of mammals. Here, we describe this enigmatic tissue using X-ray microtomography, histological analyses and solid state NMR-spectroscopy...
July 25, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28743063/glutamate-pathways-of-the-beta-cell-and-the-control-of-insulin-secretion
#10
REVIEW
Pierre Maechler
Pancreatic beta-cells secrete insulin in response to circulating glucose, thereby maintaining euglycemia. Inside the beta-cell, glucose is transformed into intracellular signals stimulating exocytosis. While calcium is an obligatory messenger, this ion is not sufficient to promote the full secretory response. Accordingly, glucose metabolism produces the additive factor glutamate that participates to an amplifying pathway of the calcium signal. Although intracellular glutamate potentiates insulin secretion, extracellular glutamate may activate ionotropic receptors...
July 12, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28742503/pth-and-pthr1-in-osteocytes-new-insights-into-old-partners
#11
Maria P Yavropoulou, Alexandros Michopoulos, John G Yovos
Parathyroid hormone receptors are present in bone cells and play a crucial role in the maintenance of skeletal integrity, bone homeostasis and regulation of calcium and phosphate metabolism. Although the function of these receptors has long being recognized in the cells of the osteoblastic lineage regulating directly osteoblast differentiation and function and indirectly osteoclastogenesis, recent findings demonstrate their functional presence in osteocytes participating in the co-ordination of bone remodelling...
April 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28741963/effects-of-parathyroidectomy-on-bone-metabolism-in-haemodialysis-patients-with-secondary-hyperparathyroidism
#12
Lijie Ma, Sumei Zhao, Zhongxin Li
OBJECTIVE: To evaluate the outcome of bone metabolism and bone mineral density (BMD) in haemodialysis patients after parathyroidectomy (PTX). METHODS: A total of 31 haemodialysis patients with secondary hyperparathyroidism (SHPT) were treated with PTX. BMD of lumbar spine (LS) and femoral neck (FN) was determined by dual energy X-ray absorptiometry. RESULTS: Parathyroidectomy ledds to significant decrease of serum β-crosslaps (β-CTX), osteocalcin (OC) and procollagen type I amino-terminal propeptide (PINP) while serum sclerostin (SOST) increased after surgery...
July 25, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28741036/network-based-subcellular-proteomics-in-monocyte-membrane-revealed-novel-candidate-genes-involved-in-osteoporosis
#13
Y Zeng, L Zhang, W Zhu, H He, H Sheng, Q Tian, F-Y Deng, L-S Zhang, H-G Hu, H-W Deng
In this study, label-free-based quantitative subcellular proteomics integrated with network analysis highlighted several candidate genes including P4HB, ITGB1, CD36, and ACTN1 that may be involved in osteoporosis. All of them are predicted as significant membrane proteins with high confidence and enriched in bone-related biological process. The results were further verified in transcriptomic and genomic levels. INTRODUCTION: Osteoporosis is a metabolic bone disease mainly characterized by low bone mineral density (BMD)...
July 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28740520/vitamin-d-levels-and-their-impact-on-mineral-metabolism-in-hiv-infected-patients-an-exploratory-study
#14
Silvina Mastaglia, Dana Watson, Natalia Bello, Vanesa Fridman, Daniel Stecher, Beatriz Oliveri
Vitamin D has immunomodulating properties. The nuclear receptor for vitamin D is expressed in several immune cells, which convert 25-hydroxyvitamin D (25OHD) to the active form 1,25 hydroxyvitamin D [1,25(OH)2 D]. Under conditions of infection, 1,25(OH)2 D promotes production of cathelicidin (an antimicrobial peptide) in monocytes and activated macrophages. In vitro studies have shown the ability of cathelicidin to inhibit replication of human immunodeficiency virus (HIV-1) in T CD4 lymphocytes and macrophages...
January 2017: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28739373/analyte-variations-in-consecutive-24-hour-urine-collections-in-children
#15
Jonathan S Ellison, John M Hollingsworth, Craig B Langman, John R Asplin, Andrew L Schwaderer, Phyllis Yan, Maggie Bierlein, Mark A Barraza, William R Defoor, T Ernesto Figueroa, Elizabeth C Jackson, Venkata R Jayanthi, Emilie K Johnson, David B Joseph, Margarett Shnorhavorian
PURPOSE: The metabolic evaluation of children with nephrolithiasis begins with a 24-h urine collection. For adults, the diagnostic yield increases with consecutive collections; however, little is known regarding the variability of multiple 24-h studies in the pediatric population. We sought to evaluate the variability of consecutive 24-h urine collection in children through a multi-institutional study hypothesizing that compared with a single collection, consecutive 24-h urine collections would reveal a greater degree of clinically useful information in the evaluation of children at risk for nephrolithiasis...
July 12, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28739328/a-case-of-oxalate-nephropathy-when-a-single-cause%C3%A2-is%C3%A2-not%C3%A2-crystal-clear
#16
Sofia Marques, Sofia Santos, Kimberly Fremin, Agnes B Fogo
Hyperoxaluria can result in oxalate nephropathy with intratubular calcium oxalate crystallization and acute tubular injury. Primary inherited enzymatic deficiency or secondary causes such as excessive dietary intake, enteric increased absorption, or high doses of vitamin C, which is metabolized to oxalate, may underlie hyperoxaluria and oxalate nephropathy. We report a case of acute kidney injury due to oxalate nephropathy in a patient using chelating therapy with oral ethylenediamine tetra acetic acid (EDTA), intravenous supplementation with vitamin C, and chronic diarrhea and discuss the potential kidney damage these factors can cause in particular settings...
July 21, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28737925/lipid-bilayer-gated-mesoporous-silica-nanocarriers-for-tumor-targeted-delivery-of-zoledronic-acid-in-vivo
#17
Diti Desai, Jixi Zhang, Jouko Sandholm, Jaakko Lehtimäki, Tove Grönroos, Johanna Tuomela, Jessica M Rosenholm
Zoledronic acid (ZOL) is a nitrogen-containing bisphosphonate used for the treatment of bone diseases and calcium metabolism. Anticancer activity of ZOL has been established, but its extraskeletal effects are limited due to its rapid uptake and accumulation to bone hydroxyapatite. In this work, we report on the development of tethered lipid bilayer-gated mesoporous silica nanocarriers (MSNs) for the incorporation, retention and intracellular delivery of ZOL. The in vitro anticancer activity of ZOL-loaded nanocarriers was evaluated by cell viability assay and live-cell imaging...
July 24, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28737193/-vertebral-fractures-in-children-with-type-i-osteogenesis-imperfecta
#18
Andrea M Sepúlveda, Claudia V Terrazas, Josefina Sáez, María L Reyes
Osteogenesis imperfecta (OI) is an hereditary disease affecting conective tissue, mainly associated to growth retardation and pathological fractures. OI type I (OI type I), is the mildest, most often, and homogeneous in its fenotype. Vertebral fractures are the most significant complications, associated to skeletical and cardiopulmonary morbidity. OBJECTIVES: To characterize clinically a cohort of children with OI type I. PATIENTS AND METHODS: A cohort of OI type I children younger than 20 year old was evaluated...
June 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28735837/coronary-artery-calcification-from-crystal-to-plaque-rupture
#19
REVIEW
Loïc Panh, Olivier Lairez, Jean-Bernard Ruidavets, Michel Galinier, Didier Carrié, Jean Ferrières
Epidemiological studies using coronary artery calcification measurement have linked calcification strongly with coronary events and mortality. Formerly considered as a passive age-related phenomenon, coronary artery calcification is now recognized as an active and regulated process. In fact, there is a local influence linked to the inflammation generated by the presence of oxidized lipids and, equally, a general influence from mineral metabolism factors, such as inorganic phosphate, calcium, pyrophosphate or fibroblast growth factor 23, which are regulators of cell differentiation and of phosphate and calcium deposition on the vascular layers...
July 20, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28735575/negotiating-the-complexities-of-exocrine-and-endocrine-dysfunction-in-chronic-pancreatitis
#20
Sinead N Duggan
Chronic pancreatitis is a chronic inflammatory disease of the pancreas characterised by irreversible morphological change and typically causing pain and/or permanent loss of function. This progressive, irreversible disease results in destruction of healthy pancreatic tissue and the development of fibrous scar tissue. Gradual loss of exocrine and endocrine function follows, along with clinical manifestations such as steatorrhoea, abdominal pain and diabetes. Nutrition in chronic pancreatitis has been described as a problem area and, until recently, there was little research on the topic...
July 24, 2017: Proceedings of the Nutrition Society
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