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https://www.readbyqxmd.com/read/28109821/calcium-pyrophosphate-deposition-disease-revealing-a-hypersensitivity-to-vitamin-d
#1
Pauline Baudart, Arnaud Molin, Johann Cesini, Glenville Jones, Martin Kaufmann, Marie Laure Kottler, Christian Marcelli
OBJECTIVE: Hypersensitivity to vitamin D (HVD) due to a loss of function mutation of the CYP24A1 gene, which encodes vitamin D catabolizing enzyme was initially described as a cause of acute hypercalcemia in children and chronic renal diseases in adults. METHODS: We describe the first case of a patient presenting a calcium pyrophosphate deposition disease (CPDD) revealing a HVD. RESULTS: An abnormality of phospho-calcic metabolism was discovered during the course of an etiological workup for CPDD in a 52-year-old patient...
January 18, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28109602/strategies-to-gain-body-condition-score-in-pasture-based-dairy-cows-during-late-lactation-and-the-far-off-nonlactating-period-and-their-interaction-with-close-up-dry-matter-intake
#2
J R Roche, A Heiser, M D Mitchell, M A Crookenden, C G Walker, J K Kay, M Vailati Riboni, J J Loor, S Meier
In pasture-based systems, cows are generally thinner at the end of lactation than cows fed total mixed rations and, as a result, over-feeding of metabolizable energy (ME) during the far-off nonlactating period is a standard management policy to achieve optimum calving body condition score (BCS). An alternative would be to manage cows to gain BCS through late lactation, such that cows ended lactation close to optimum calving BCS and maintenance of BCS through to calving. We sought to quantify the effect of moderate or excessive ME intakes during the far-off nonlactating period in cows that had been managed to gain or maintain BCS through late lactation and whether the far-off management strategy interacted with close-up level of feeding...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28107811/biomimetic-versus-sintered-calcium-phosphates-the-in-vitro-behavior-of-osteoblasts-and-mesenchymal-stem-cells
#3
Joanna Maria Sadowska, Jordi Guillem-Marti, Edgar B Montufar, Montserrat Espanol, Maria-Pau Ginebra
The fabrication of calcium phosphates using biomimetic routes, namely, precipitation processes at body temperature, results in distinct features compared to conventional sintered calcium phosphate ceramics, such as a high specific surface area and micro or nanometric crystal size. The aim of this paper is to analyze the effects of these parameters on cell response, focusing on two bone cell types: rat mesenchymal stem cells (rMSCs) and human osteoblastic cells (SaOS-2). Biomimetic calcium deficient hydroxyapatite (CDHA) was obtained by a low temperature setting reaction, and α-tricalcium phosphate (α-TCP) and β- tricalcium phosphate (β-TCP) were subsequently obtained by sintering CDHA either at 1400 °C or 1100 °C...
January 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28107561/beta-blockers-for-hypertension
#4
REVIEW
Charles S Wiysonge, Hazel A Bradley, Jimmy Volmink, Bongani M Mayosi, Lionel H Opie
BACKGROUND: Beta-blockers refer to a mixed group of drugs with diverse pharmacodynamic and pharmacokinetic properties. They have shown long-term beneficial effects on mortality and cardiovascular disease (CVD) when used in people with heart failure or acute myocardial infarction. Beta-blockers were thought to have similar beneficial effects when used as first-line therapy for hypertension. However, the benefit of beta-blockers as first-line therapy for hypertension without compelling indications is controversial...
January 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28107527/effects-of-the-administration-of-25-oh-vitamin-d3-in-an-experimental-model-of-chronic-kidney-disease-in-animals-null-for-1-alpha-hydroxylase
#5
Noelia Torremadé, Milica Bozic, David Goltzman, Elvira Fernandez, José M Valdivielso
The final step in vitamin D activation is catalyzed by 1-alpha-hydroxylase (CYP27B1). Chronic kidney disease (CKD) is characterized by low levels of both 25(OH)D3 and 1,25(OH)2D3 provoking secondary hyperparathyroidism (2HPT). Therefore, treatments with active or native vitamin D compounds are common in CKD to restore 25(OH)D3 levels and also to decrease PTH. This study evaluates the dose of 25(OH)D3 that restores parathyroid hormone (PTH) and calcium levels in a model of CKD in CYP27B1-/- mice. Furthermore, we compare the safety and efficacy of the same dose in CYP27B1+/+ animals...
2017: PloS One
https://www.readbyqxmd.com/read/28106264/role-of-microbial-inoculation-and-industrial-by-product-phosphogypsum-on-growth-and-nutrients-uptake-of-maize-zea-mays-l-grown-in-calcareous-soil
#6
Abdul-Aziz R Al-Enazy, Saud S Al-Oud, Fahad N Al-Barakah, R A Adel, Usman
BACKGROUND: Alkaline soils with high calcium carbonate and low organic matter are deficient in plant nutrients availability. Use of organic and bio-fertilizers has been suggested to improve their properties. Therefore, a greenhouse experiment was conducted to evaluate the integrative role of phosphogypsum (PG; added at 0.0, 10, 30, and 50 g PG kg(-1) ), cow manure (CM; added at 50 g kg(-1) ) and mixed microbial inoculation (Incl; Azotobacter chroococcum, phosphate-solubilizing bacterium of Bacillus megaterium var...
January 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28105733/vitamin-d-supplementation-for-sickle-cell-disease
#7
REVIEW
Htoo Htoo Kyaw Soe, Adinegara Bl Abas, Nan Nitra Than, Han Ni, Jaspal Singh, Abdul Razzak Bin Mohd Said, Ifeyinwa Osunkwo
BACKGROUND: Sickle cell disease is a genetic chronic haemolytic and pro-inflammatory disorder. The clinical manifestations of sickle cell disease result from the presence of mutations on the beta globin genes that generate an abnormal haemoglobin product (called haemoglobin S) within the red blood cell. Sickle cell disease can lead to many complications such as acute chest syndrome, stroke, acute and chronic bone complications (including painful vaso-occlusive crisis, osteomyelitis, osteonecrosis and osteoporosis)...
January 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28103838/race-and-bmi-modify-associations-of-calcium-and-vitamin-d-intake-with-prostate-cancer
#8
Ken Batai, Adam B Murphy, Maria Ruden, Jennifer Newsome, Ebony Shah, Michael A Dixon, Elizabeth T Jacobs, Courtney M P Hollowell, Chiledum Ahaghotu, Rick A Kittles
BACKGROUND: African Americans have disproportionately higher burden of prostate cancer compared to European Americans. However, the cause of prostate cancer disparities is still unclear. Several roles have been proposed for calcium and vitamin D in prostate cancer pathogenesis and progression, but epidemiologic studies have been conducted mainly in European descent populations. Here we investigated the association of calcium and vitamin D intake with prostate cancer in multiethnic samples...
January 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28102545/-rice-calcium-dependent-protein-kinase-oscpk17-targets-plasma-membrane-intrinsic-protein-and-sucrose-phosphate-synthase-and-is-required-for-a-proper-cold-stress-response
#9
M Cecília Almadanim, Bruno M Alexandre, Margarida T G Rosa, Helena Sapeta, António E Leitão, José C Ramalho, TuKiet T Lam, Sónia Negrão, Isabel A Abreu, M Margarida Oliveira
Calcium-dependent protein kinases (CDPKs) are involved in plant tolerance mechanisms to abiotic stresses. Although CDPKs are recognized as key messengers in signal transduction, the specific role of most members of this family remains unknown. Here we test the hypothesis that OsCPK17 plays a role in rice cold stress response by analyzing OsCPK17 knockout, silencing, and overexpressing rice lines under low temperature. Altered OsCPK17 gene expression compromises cold tolerance performance, without affecting the expression of key cold stress-inducible genes...
January 19, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28102095/significance-of-the-ionized-calcium-measurement-to-assess-calcium-status-in-osteopenic-osteoporosis-postmenopausal-outpatients
#10
Letizia Guiducci, Silvia Maffei, Laura Sabatino, Luc Zyw, Debora Battaglia, Alessandro Vannucci, Pietro Di Cecco, Cristina Vassalle
INTRODUCTION: Evaluation of calcium status is important in the osteoporotic risk assessment. Although guidelines indicate total calcium (tCa) as first-line measurement, directly measured ionized calcium (m-iCa), considered as the gold standard, is more and more often required. Aim of this study is to evaluate the agreement between m-iCa, tCa and iCa calculated from a formula based on total calcium and albumin (c-iCa) in osteopenic/osteoporotic postmenopausal outpatients. METHODS: A total of 140 postmenopausal outpatients, 41 osteopenic (OPN) and 99 osteoporotic (OP) were enrolled...
January 19, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28100681/lfa-1-activation-in-nk-cells-and-their-subsets-influence-of-receptors-maturation-and-cytokine-stimulation
#11
Doris Urlaub, Kristine Höfer, Martha-Lena Müller, Carsten Watzl
The integrin LFA-1 is essential for efficient activation and for cytotoxicity of NK cells because it initiates the assembly of the immunological synapse and mediates firm adhesion to the target. LFA-1 is also needed to polarize the cytotoxic machinery of the NK cell toward the target cell. The binding affinity and avidity of integrins can be regulated via inside-out signals from other receptors. In this article, we investigate the signals necessary to activate LFA-1 in human NK cells. Our data show that LFA-1 has a low ligand-binding activity in resting human NK cells, but it can be stimulated by triggering activating receptors, such as 2B4 or CD16, or by coactivation of different receptor combinations...
January 18, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28099971/warfarin-associated-nonuremic-calciphylaxis
#12
Wesley Yung-Hsu Yu, Tina Bhutani, Rachel Kornik, Laura B Pincus, Theodora Mauro, Michael D Rosenblum, Lindy P Fox
Importance: Classic calciphylaxis associated with renal failure is a life-threatening disease. Warfarin-associated calciphylaxis without renal injury has been described, but whether it is a subset of classic calciphylaxis or a different entity remains unknown. We describe 1 case of warfarin-associated calciphylaxis, present data from 2 others from our institution, and review all cases of warfarin-associated calciphylaxis available in the literature. Our review indicates that warfarin-associated calciphylaxis is clinically and pathophysiologically distinct from classic calciphylaxis...
January 11, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28099893/lead-binding-capacity-of-calcium-pectates-with-different-molecular-weight
#13
Maksim Khotimchenko, Ksenia Makarova, Elena Khozhaenko, Valeri Kovalev
Nowadays, heavy metal contamination of environment is considered as a serious threat to public health because of toxicity of these pollutants and the lack of effective materials with metal-binding properties. Some biopolymers such as pectins were proposed for removal of metal ions from industrial water disposals. Chemical structure of pectins is quite variable and substantially affects their metal binding properties. In this work, relationship between molecular weight and Pb(II)-binding capacity of calcium pectates was investigated in a batch sorption system...
January 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28097485/sorption-of-organic-phosphates-and-its-effects-on-aggregation-of-hematite-nanoparticles-in-monovalent-and-bivalent-solutions
#14
Chen-Yang Xu, Jiu-Yu Li, Ren-Kou Xu, Zhi-Neng Hong
Sorption of organic phosphates-myo-inositol hexakisphosphate (IHP) and glycerol phosphate (GP) and its effects on the early stage of hematite aggregation kinetics were investigated at different pH and electrolyte composition. KH2PO4 (KP) was taken as an inorganic P source for comparison. Results indicated that for all types of P, the sorption amounts decreased with increasing solution pH. Sorption amount of IHP was almost two times that of KP, while those of GP and KP were close. Both organic P and inorganic P interacted with hematite via ligand exchange through their phosphate groups, which conveyed negative charges to mineral surface and significantly decreased the zeta potential of hematite...
January 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28096139/potential-health-benefits-of-combining-yogurt-and-fruits-based-on-their-probiotic-and-prebiotic-properties
#15
REVIEW
Melissa Anne Fernandez, André Marette
Fruit and yogurt have been identified individually as indicators of healthy dietary patterns. Fruits are relatively low in energy density and are an excellent source of antioxidants and prebiotic fibers and polyphenols, which can promote digestive health. Yogurt, on the other hand, is a nutrient-dense food that is a good source of dairy protein, calcium, magnesium, vitamin B-12, conjugated linoleic acid, and other key fatty acids. In addition, it contains beneficial bacterial cultures, making it a potential source of probiotics...
January 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28095842/cactus-opuntia-humifusa-water-extract-ameliorates-loperamide-induced-constipation-in-rats
#16
Sung Hee Han, Kyungmi Park, Eun Young Kim, So Hyun Ahn, Hyun-Sun Lee, Hyung Joo Suh
BACKGROUND: Korean cactus Cheonnyuncho (Opuntia humifusa) is rich in pectin, phenols, flavonoids, and minerals such as calcium and phosphorus. Some Koreans drink Cheonnyuncho juice prepared by grinding Cheonnyuncho with water. Cheonnyuncho is well known for its functional properties and antioxidant effects, but its effect on constipation has not been sufficiently studied. METHODS: Loperamide (2 mg/kg) was injected subcutaneously to induce constipation in rats. The animals were divided into four groups: a normal group (NOR), constipation control group (CON), and two constipation groups receiving the Cheonnyuncho extract (CE) at two different concentrations in drinking water, 3% (L-CE group) and 6% (H-CE group), for 25 days...
January 17, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28094949/how-high-concentrations-of-proteins-stabilize-the-amorphous-state-of-calcium-orthophosphate-a-solid-state-nmr-study-of-the-casein-case
#17
Paulo De Sa Peixoto, Juliana Valle Costa Silva, Guillaume Pierre Laurent, Marc Schmutz, Daniel Thomas, Antoine Bouchoux, Genevieve Gesan-Guiziou
Understanding how proteins stabilize Amorphous Calcium ortho-Phosphate (ACP) phases is of great importance in biology and for pharmaceutical or food applications. Until now, most of the former investigations about ACP-protein stability and equilibrium were performed in conditions where ACP colloidal nanoclusters are surrounded by low to moderate concentrations of peptides or proteins (15-30 g.L-1). As a result, the question of ACP-protein interactions in highly concentrated protein systems has clearly been overlooked, whereas it corresponds to actual industrial conditions such as drying or membrane filtration in the dairy industry for instance...
January 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28094278/persistent-fibroblast-growth-factor-23-signalling-in-the-parathyroid-glands-for-secondary-hyperparathyroidism-in-mice-with-chronic-kidney-disease
#18
Kazuki Kawakami, Ai Takeshita, Kenryo Furushima, Masayasu Miyajima, Ikuji Hatamura, Makoto Kuro-O, Yasuhide Furuta, Kazushige Sakaguchi
Secondary hyperparathyroidism, in which parathyroid hormone (PTH) is excessively secreted in response to factors such as hyperphosphataemia, hypocalcaemia, and low 1,25-dihydroxyvitamin D (1,25(OH)2D) levels, is commonly observed in patients with chronic kidney disease (CKD), and is accompanied by high levels of fibroblast growth factor 23 (FGF23). However, the effect of FGF23 on the parathyroid glands (PG) remains controversial. To bind to FGF receptors, FGF23 requires αKlotho, which is highly expressed in the PG...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093941/novel-surface-engineered-solid-lipid-nanoparticles-of-rosuvastatin-calcium-for-low-density-lipoprotein-receptor-targeting-a-quality-by-design-driven-perspective
#19
Sarwar Beg, Sanyog Jain, Varun Kushwah, Gurjit Kaur Bhatti, Premjeet Singh Sandhu, O P Katare, Bhupinder Singh
AIM: The present studies describe Quality by Design-oriented development and characterization of surface-engineered solid lipid nanoparticles (SLNs) of rosuvastatin calcium for low density lipoprotein-receptor targeting. MATERIALS & METHODS: SLNs were systematically prepared employing Compritol 888 and Tween-80. Surface modification of SLNs was accomplished with Phospholipon 90G and DSPE-mPEG-2000 as the ligands for specific targeting to the low density lipoprotein-receptors...
January 17, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28093633/dietary-potassium-intake-is-beneficial-to-bone-health-in-a-low-calcium-intake-population-the-korean-national-health-and-nutrition-examination-survey-knhanes-2008-2011
#20
S H Kong, J H Kim, A R Hong, J H Lee, S W Kim, C S Shin
: Dietary potassium may neutralize acid load and reduce calcium loss from the bone, leading to beneficial effect on bone mineral density. In this nationwide Korean population study, dietary potassium intake was associated with improved bone mineral density in older men and postmenopausal women. INTRODUCTION: Nutrition is a major modifiable factor that affects bone health. The accompanying anion in dietary potassium may act as an alkaline source by neutralizing the acid load and reducing calcium loss from the bone...
January 16, 2017: Osteoporosis International
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