Relevant bibliographies by topics / Calcium-deficient

Academic literature on the topic 'Calcium-deficient'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Calcium-deficient"

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Herminiati, Ainia. "The effectivity of Difructose Anhydride III to increase absorption of calcium in the femur bone of calcium deficient rats." Functional Foods in Health and Disease 10, no. 4 (April 30, 2020): 168. http://dx.doi.org/10.31989/ffhd.v10i4.701.

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Background: Dried yogurt enriched by Difructose Anhydride III when used as a functional food has been observed to increase calcium absorption, making it useful in osteoporosis prevention. The objective of this study was to analyze the effectiveness of Difructose Anhydride III in increasing the absorption of calcium in female rat models, strain Sprague Dawley, in the pre-menopausal age during which they’re calcium deficient.Methods: The effectiveness test of Difructose Anhydride III to increase absorption of calcium in pre-menopausal Sprague Dawley rats was performed in calcium-deficient conditions. A completely randomized experimental design was used with 4 treatments for 6 weeks and 4 replications: normal rats fed with purified diet (C), calcium-deficient rats fed with calcium-deficient diet (CD), calcium-deficient rats fed with calcium-deficient diet and DFA III (dahlia tubers) fortified in dry yogurt (CD+DFA III dahlia), and calcium-deficient rats fed with a calcium-deficient diet and DFA III (chicory roots) fortified in dry yogurt (CD+DFA III chicory). The parameters measured were serum calcium concentration, femur bone calcium concentration, femur bone matrix condition, and femur bone strength.Results: DFA III (dahlia tubers and chicory roots) fortified in dry yogurt contained 0.334% and 0.322% of calcium concentration. The provision of a calcium-deficient diet for 12 weeks was shown to reduce the serum calcium concentration of the deficient calcium rat to 7.72±1.08 mg dL-1 and the control rat to 11.60±0.85 mg dL-1. CD+DFA III chicory treatments also showed a high calcium concentration in the femur bone (34.94±3.21%), a relatively higher bone strength (9.34±3.61 kg cm-2), and a denser femur bone matrix condition than the control. The femur bone calcium level of rats treated with CD+DFA III dahlia and chicory tubers was 28.95±1.95% and 34.94±3.21%, respectively. These results were significantly different than the CD treatment (17.49±4.38%).Conclusion: The evidence from this study suggests that sufficient calcium intake could provide high calcium deposits in the bones. Diets containing 3.60% w/w DFA III fortified in dry yogurt have been shown to enhance calcium absorption in calcium-deficient rats. Additionally, the effectiveness of dried yogurt enriched by DFA III from chicory tubers was higher than that of the dried yogurt enriched by DFA III from dahlia tubers.Preclinical Trial Registration: Animal Ethics Committee at IPB University No. 12-2013Keywords: Bone femur; calcium deficiency; effectivity of Difructose Anhydride III
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Ipekoglu, M., and S. Altintas. "Silver substituted nanosized calcium deficient hydroxyapatite." Materials Technology 25, no. 5 (November 2010): 295–301. http://dx.doi.org/10.1179/175355510x12692596613648.

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Sakamoto, Kiyoko, Kazuno Mizuguchi, Takuya Nomoto, Shunro Yamaguchi, Junko Ichihara, Yoh Sasaki, and Koichi Niihara. "Thermoluminescence of Calcium-Deficient Fluoridated Hydroxyapatite." Phosphorus, Sulfur, and Silicon and the Related Elements 177, no. 8-9 (August 2002): 2261. http://dx.doi.org/10.1080/10426500213376.

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Dykman, A. S., O. Ye Batalin, V. M. Yevgrashin, and E. I. Rubinstein. "Catalytic Activity of Calcium-Deficient Hydroxylapatites." Phosphorus, Sulfur, and Silicon and the Related Elements 51, no. 1 (1990): 433. http://dx.doi.org/10.1080/10426509008544475.

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Sissons, H. A., G. J. Kelman, and G. Marotti. "Bone resorption in calcium-deficient rats." Bone 6, no. 5 (1985): 345–47. http://dx.doi.org/10.1016/8756-3282(85)90328-x.

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Park, Myoung-Gyu, Tae-Yul Ha, and Kwang-Soon Shin. "Bioavailability of Aspartic Acid Chelated Calcium in Calcium Deficient Rats." Korean Journal of Nutrition 44, no. 6 (2011): 474. http://dx.doi.org/10.4163/kjn.2011.44.6.474.

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Lausson, S., J. F. Staub, G. Milhaud, and A. M. Perault-Staub. "Circadian variations in plasma calcium and calcitonin: effect of calcium deficiency and fasting." Journal of Endocrinology 107, no. 3 (December 1985): 389–95. http://dx.doi.org/10.1677/joe.0.1070389.

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ABSTRACT Circadian fluctuations of plasma calcium and immunoassayable calcitonin levels were studied in normal and calcium-deficient 2-month-old rats. The relationship between these parameters was also studied in animals which had been fasted for short periods. The plasma calcium rhythm persisted and was even amplified in rats placed on a 4-week calcium-deficient diet. In these rats, as in normal rats, the plasma calcium concentration diminished during the dark period. Calcitonin levels increased at the onset of the feeding period in normal rats but, in calcium-deficient rats, the pattern changed completely, with a major peak at the end of the light period and remaining at a low level during the dark feeding period. This modification of calcitonin rhythmicity appeared to be dependent on the degree of calcium deficiency. Fasting had little effect on calcitonin rhythms in either normal or calcium-deficient rats. It is concluded that the calcitonin rhythm is relatively independent of feeding per se and that there appears to be no simple relationship between plasma calcium and calcitonin concentrations. It is suggested that the results may best be interpreted as reflecting the presence of rhythmic endogenous phenomena which are intrinsic to calcium metabolism and its regulation in the rat. J. Endocr. (1985) 107, 389–395
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KIKUNAGA, Shigeshi, Miwako ARIMORI, and Masayuki TAKAHASHI. "The bioavailability of calcium in spinach and calcium-oxalate to calcium-deficient rats." Journal of Nutritional Science and Vitaminology 34, no. 2 (1988): 195–207. http://dx.doi.org/10.3177/jnsv.34.195.

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De Flora, A., U. Benatti, L. Guida, G. Forteleoni, and T. Meloni. "Favism: disordered erythrocyte calcium homeostasis." Blood 66, no. 2 (August 1, 1985): 294–97. http://dx.doi.org/10.1182/blood.v66.2.294.294.

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Abstract The biochemical events that take place during acute hemolysis of G6PD- deficient subjects in favism are far from being elucidated. Evidence is here reported for a constantly and heavily disordered calcium homeostasis in the erythrocytes from seven favic patients. The abnormality, ie, a significantly impaired calcium ATPase activity and a parallel marked increase of intracellular calcium levels, was characteristic of the acute hemolytic crisis although unrelated to the attendant reticulocytosis. Concomitantly, a remarkable decrease of intracellular potassium was also observed. The mean +/- SD Ca2+-ATPase activity in the favic patients was 20.8 +/- 7.8 mumol Pi/g Hb/h compared with 37.2 +/- 8.5 in the matched controls represented by 12 healthy G6PD-deficient subjects (P less than .001). The mean +/- SD intraerythrocytic calcium content was 288 +/- 158 mumol/L of erythrocytes in the favic patients as compared with 22.0 +/- 8.2 in the G6PD-deficient controls (P less than .001). The intraerythrocytic potassium content was 76.6 +/- 19.3 mmol/L of erythrocytes in the favic patients and 106.6 +/- 8.2 in the G6PD-deficient controls (P less than .001). In vitro incubation of normal and G6PD-deficient erythrocytes with divicine, a pyrimidine aglycone present in fava beans and strongly implicated in the pathogenesis of favism, reproduces most of these events, including drop of calcium ATPase, increased intracellular calcium, and leakage of erythrocyte potassium.
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De Flora, A., U. Benatti, L. Guida, G. Forteleoni, and T. Meloni. "Favism: disordered erythrocyte calcium homeostasis." Blood 66, no. 2 (August 1, 1985): 294–97. http://dx.doi.org/10.1182/blood.v66.2.294.bloodjournal662294.

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The biochemical events that take place during acute hemolysis of G6PD- deficient subjects in favism are far from being elucidated. Evidence is here reported for a constantly and heavily disordered calcium homeostasis in the erythrocytes from seven favic patients. The abnormality, ie, a significantly impaired calcium ATPase activity and a parallel marked increase of intracellular calcium levels, was characteristic of the acute hemolytic crisis although unrelated to the attendant reticulocytosis. Concomitantly, a remarkable decrease of intracellular potassium was also observed. The mean +/- SD Ca2+-ATPase activity in the favic patients was 20.8 +/- 7.8 mumol Pi/g Hb/h compared with 37.2 +/- 8.5 in the matched controls represented by 12 healthy G6PD-deficient subjects (P less than .001). The mean +/- SD intraerythrocytic calcium content was 288 +/- 158 mumol/L of erythrocytes in the favic patients as compared with 22.0 +/- 8.2 in the G6PD-deficient controls (P less than .001). The intraerythrocytic potassium content was 76.6 +/- 19.3 mmol/L of erythrocytes in the favic patients and 106.6 +/- 8.2 in the G6PD-deficient controls (P less than .001). In vitro incubation of normal and G6PD-deficient erythrocytes with divicine, a pyrimidine aglycone present in fava beans and strongly implicated in the pathogenesis of favism, reproduces most of these events, including drop of calcium ATPase, increased intracellular calcium, and leakage of erythrocyte potassium.
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Dissertations / Theses on the topic "Calcium-deficient"

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Zhou, Huan. "Multi-Functions of Carbonated Calcium Deficient Hydroxyapatite (CDHA)." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1332947663.

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Hauser, Holly. "Attempts to create rickets in mice using a calcium deficient diet." Connect to resource, 2007. http://hdl.handle.net/1811/24829.

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Thesis (Honors)--Ohio State University, 2007.
Title from first page of PDF file. Document formatted into pages: contains 11 p.; also includes graphics. Includes bibliographical references (p. 10-11). Available online via Ohio State University's Knowledge Bank.
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Cifelli, Carlo. "Impairment of force development in K(ATP) channel deficient skeletal muscle involves calcium ion influx through L-type calcium ion channels." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27342.

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ATP-sensitive potassium (KATP) channels link membrane excitability to metabolism. They are regulated by intracellular nucleotides and other factors, and have been shown to play a role in development of skeletal muscle force, but controversy surrounds their role during fatigue. The aim of this research project was to determine the role of KATP channel under conditions that allow for better assessment of changes in force during fatigue, by virtue of using a smaller whole muscle model less subject to anoxia. Thus, the first objective was to determine the effect of the loss of KATP channel activity on force during fatigue in small FDB muscle bundles. KATP channel deficient fibers had faster and greater decreases in peak tetanic force during fatigue, developed greater resting tension, and had lower force recovery following fatigue compared to control wild type muscles. The second objective was to determine whether the functional impairment in skeletal muscle without KATP channel activity was due to an increase in Ca 2+ influx. When [Ca2+]e was reduced or L-type Ca2+ channels partially blocked, Kir6.2-/- FDB muscle had slower fatigue development, less resting tension, and had an improved force recovery. A novel phenomenon was observed while studying the effect of KATP channel activity in vitro. During a second bout of fatigue the decrease in peak tension was significantly lower than the decrease during the first bout of fatigue. Furthermore, the deleterious effects of the loss of KATP channel activity during an initial fatigue were absent during the second fatigue in FDB exposed to glibenclamide. It is concluded (i) that the KATP channel is important to prevent impairment of function during fatigue, (ii) that this impairment of function is due to an increase in Ca2+ influx through L-type Ca2+ channels, causing Ca2+ overload, and (iii) that fatigue resistance increases while the dependency on the KATP channel to prevent function impairment and fiber damage decreases following one fatigue bout at 37°C; a phenomenon here termed fatigue pre-conditioning.
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Tin, Ekun. "Changes in Iron, Calcium, Magnesium, Copper and Zinc Levels in Different Tissues of Riboflavin Deficient Rats." Kyoto University, 1997. http://hdl.handle.net/2433/202193.

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Aksu, Ceren. "The Role Of Calcium Ion On Activated Sludge Biochemical And Physical Properties In Phosphorus Deficient Growth Medium." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612580/index.pdf.

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Nutrients and cations have significant effect on activated sludge characteristics and therefore effect the efficiency of whole processes. To determine the properties in phosphorus deficient medium and the effect of calcium ions two reactor sets with two different phosphorus concentration (C/N/P=100/5/0.05 and C/N/P=100/5/1), three different concentrations of calcium (0.5, 5, 15 meq/L) were operated with 8 days of sludge residence time and an effective volume of 2 L. Results showed amount and composition of EPS was dependent on calcium and phosphorus concentrations. Except for the highest calcium concentration, increase in phosphorus concentration resulted in increase in total EPS production. Under phosphorus deficient conditions, calcium ions stimulated the production of carbohydrate type polymers and viscous bulking was observed. However, the increase in phosphorus concentration led to increase in protein type polymer production and bulking condition was cured. Addition of calcium ions increased conductivity in both cases, but increase in phosphorus concentration caused decrease in conductivity. Increase in phosphorus concentration had improved settleability, dewaterability and rheology of sludge. Moreover, effluent turbidity was decreased and COD removal efficiency was recorded as greater than 95 % for all calcium concentrations under phosphorus sufficient conditions. Microscopic analyses showed that under phosphorus deficient conditions flocs were weak, dispersed and nonresistant. Increase in phosphorus concentration resulted in improvement of floc structure. Same Enterobacter and Citrobacter species were identified at all calcium concentrations under phosphorus deficient conditions. Yet, under phosphorus sufficient conditions different species were identified in control reactor as compared to 5 meq/L and 15 meq/L concentrations.
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Zhang, Joachim Yaxin [Verfasser]. "Calcium regulation in normal and dystrophin-deficient muscle and the role of TRP channels / Joachim Yaxin Zhang." Greifswald : Universitätsbibliothek Greifswald, 2016. http://d-nb.info/1106150414/34.

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Akiyama, Norihiro. "Difference between Dogs and Rats with regard to Osteoclast-like Cells in Calcium-deficient Hydroxyapatite-Induced Osteoinduction." Kyoto University, 2011. http://hdl.handle.net/2433/142091.

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Chaistitwanich, Rachaneeporn. "The Effect of Dietary Calcium and Phosphorus Levels on Audiogenic Seizure Susceptibility and Brain Neurotransmitters in Magnasium Deficient Rats." DigitalCommons@USU, 1986. https://digitalcommons.usu.edu/etd/5330.

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The effects of dietary calcium and phosphorus levels on audiogenic seizure susceptibility and brain neurotransmitter were investigated in magnesium deficient rats. For 17 days, male weanling rats were fed magnesium deficient diets which also contained deficient (-), adequate (=}, and excess (+) amounts of calcium and/or phosphorus. Reduction of seizure incidence was seen in low calcium and/or low phosphorus diets. High calcium, and high calcium in combination with high phosphorus increased the severity of seizures. High calcium and low phosphorus, and high phosphorus and low calcium diets prevented seizuring. Most magnesium deficient diets resulted in elevation of serum phosphorus, calcium, and sodium concentrations. Within diet treatments, animals that seized had higher serum mineral concentrations than animals that failed to seize. Magnesium deficiency increased serotonin in cerebral cortex, cerebellum, and medulla oblongata and pons, and 5-hydroxyindoleacetic acid concentrations in cerebral cortex. There were no significant diet effects in brain neurotransmitter concentrations in the midbrain. Calcium seemed to play an important role in increasing both audiogenic seizure susceptibility and brain neurotransmitters. However, brain neurotransmitter levels were not related to seizure susceptibility. Calcium increased serum potassium and sodium concentrations and it increased brain serotonin concentration overall. Increasing dietary phosphorus levels increased serum phosphorus decreased serum calcium concentrations, but did not affect brain neurotransmitters.
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Picard, Quentin. "Biomatériaux hybrides : tissu de fibres de carbone / phosphates de calcium : synthèse, caractérisation et biocompatibilité." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2073/document.

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Ce travail a consisté à élaborer un biomatériau hybride constitué d’un tissu de fibres de carbone (TFC) revêtu de phosphates de calcium (CaP) déposés par un procédé de sono-électrodéposition et à étudier l’influence des paramètres expérimentaux sur la composition chimique, la microtexture et la structure des revêtements phosphocalciques, ainsi que la biocompatibilité in vitro du biomatériau hybride. La densité de courant s’est avérée être un paramètre important. Pour de fortes densités de courant (≥ 100 mA/g), un régime d’électrolyse rapide de l’eau entraîne la formation d’un dépôt aciculaire d’hydroxyapatite déficitaire en calcium (CaD-HAP) carbonatée avec la présence éventuelle d’une phase de calcite. Pour de faibles densités de courant (≤ 50 mA/g), un régime d’électrolyse lent de l’eau entraîne la formation d’un dépôt plaquettaire de CaD-HAP carbonatée issu de l’hydrolyse in situ du phosphate octocalcique plaquettaire préalablement précipité. Pour l’ensemble des dépôts, les particules sont constituées d’un coeur de CaD-HAP carbonatée de structure ordonnée et d’une surface hydratée de CaD-HAP carbonatée de structure désordonnée qui résulte de l’existence d’une zone de sursaturation lors de la précipitation des CaP. La sono-électrodéposition se révèle être un procédé versatile capable d’orienter la synthèse des phases de CaP, avec pour une faible densité de courant appliquée l’obtention d’un dépôt biomimétique comparable à la partie minérale du tissu osseux obtenue par le processus d’ostéogénèse naturelle. Des tests de viabilité in vitro réalisés avec des ostéoblastes humains primaires ont montré que la nanoporosité et le caractère hydrophile des TFC n’impactent pas la biocompatibilité et que les paramètres tels que le précurseur des fibres, l’ensimage et/ou la forme lobée des fibres semblent favoriser l’adhésion et la prolifération des cellules
This work is focused on the synthesis of a novel hybrid biomaterial made of carbon fibers cloth (CFC)/ calcium phosphates (CaP) using the sono-electrochemical technique and the study of the influence of experimental parameters on the chemical composition, microtexture and structure of CaP deposits and on in vitro biocompatibility. Current density is shown to be a crucial parameter. Specifically, at high current densities ((≥ 100 mA/g), the fast water electrolysis rate leads to a needle-like deposit consisting in a major phase of carbonated calcium deficient hydroxyapatite (CaD-HAP) mixed with a calcium carbonate phase. At low current densities (≤ 50 mA/g), the slow water electrolysis rate generates a plate-like carbonated CaD-HAP phase, coming from the in situ hydrolysis of a former octacalcium phosphate phase. Whatever the experimental conditions, particles of the deposits consists in a carbonated CaD-HAP core showing an ordered structure, surrounded by a hydrated and disordered carbonated CaD-HAP surface layer which results of the formation of oversaturated domains during CaP precipitation. Sono-electrodeposition is shown to be a versatile process able to control the nature of CaP phases. Especially, at low current density a biomimetic CaP deposit is obtained, similar to the mineral part of bones produced during natural osteogenesis. In vitro biologic tests using primary human osteoblasts showed that the nano-porosity and hydrophilicity of the carbon fibers do not affect the biocompatibility and that fiber precursor, sizing and lobe shaped fibers seems to favor adhesion and proliferation of human cells
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Chandler, Catherine. "Spectroscopy of exotic f - p - g nuclei using projectile fragmentation and fusion evaporation reactions." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/843034/.

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The structural properties of the very neutron deficient systems around N~Z~40 have been studied in two experiments performed at the GANIL and Legnaro laboratories. The fragmentation of a 60 MeV/u92 Mo beam on a natural nickel target at the GANIL Laboratory, France, produced exotic nuclei along the proton drip line in the mass 80 region. Isomeric decays have been observed for the first time in the N=Z+2 systems 74 36Kr, 80 39Y and 84 41Nb. The isomer in 74 Kr is interpreted as the hindered decay from an excited 0+ state, supporting the long-standing prediction of prolate/oblate shape coexistence in this nucleus. Transitions from states below an isomer in the N=Z nucleus 86 43Tc have also been tentatively identified, making this the heaviest N=Z system for which gamma-ray decays from excited states have been observed. Conclusive evidence for the existence of the Z=N+1 isotopes 77 39Y, 79 40Zr and 83 42Mo has also been obtained together with upper limits on the particle decay lifetimes of the odd-proton systems 81 41 Nb and 85 43Tc. The reported instability of the lighter odd-Z, Tz = -1/2 systems 69Br and 73Rb makes the observed existence for 77 39Y particularly interesting. A possible explanation for the relative particle stability of 77 39Y is given in terms of the shape polarising effect of the N=Z=38 prolate shell gap on the nuclear mean field and the increased centrifugal barrier associated with the occupation of a g9/2 proton orbital. The second experiment was performed to further investigate the oblate nature of the isomeric state in 74Kr. The reaction 40Ca(40Ca, alpha2p)74Kr was used at a beam energy of 135 MeV obtained from the Tandem XTU accelerator. The EUROBALL gamma-ray array was used in conjunction with the ISIS charged particle silicon ball to study the states above and below the isomer. The ISIS ball was used to highlight channel selection of non-yrast states by particle gating. No evidence for the 0+2 isomer in 74Kr was observed in this work.
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Books on the topic "Calcium-deficient"

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Unland, Denise M. Cornell Dyer and the Calcium Deficient Bones. Unland, Denise, 2022.

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Jadon, Deepak R., Tehseen Ahmed, and Ashok K. Bhalla. Disorders of bone mineralization—osteomalacia. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199642489.003.0146.

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Disorders of bone mineralization cause rickets in children and osteomalacia in adults. Both remain common in developing countries. Incidence in Western countries had declined since the fortification of foodstuffs, but appears to be increasing again. Calcium and inorganic phosphate are the key precursors for bone mineralization and growth. The commonest aetiology of osteomalacia is vitamin D deficiency, primarily due to low dietary intake and inadequate sun exposure. In the last decade gene mutations have been identified that are responsible for inherited rickets and osteomalacia, particularly those that result in phosphate deficiency, hypophosphatasia, and vitamin D receptor or metabolizing enzyme mutations. Additionally, the pathogenesis of tumour-induced osteomalacia is becoming better understood. Osteomalacia may present as bone pain and tenderness, muscle pain and weakness, and skeletal deformity or fracture. Key investigations include biochemical assessment and plain radiographs. Radioisotope bone scans and bone biopsy may be considered in selected cases. Differential diagnoses include osteoporosis, seronegative arthritides, and localized soft tissue disorders. Treatment, guided by the underlying aetiology, aims to reduce symptoms, fracture risk, bone deformity and sequelae. Vitamin D deficient patients require vitamin D and calcium replacement.
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Jadon, Deepak R., Tehseen Ahmed, and Ashok K. Bhalla. Disorders of bone mineralization—osteomalacia. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199642489.003.0146_update_001.

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Disorders of bone mineralization cause rickets in children and osteomalacia in adults. Both remain common in developing countries. Incidence in Western countries had declined since the fortification of foodstuffs, but appears to be increasing again. Calcium and inorganic phosphate are the key precursors for bone mineralization and growth. The commonest aetiology of osteomalacia is vitamin D deficiency, primarily due to low dietary intake and inadequate sun exposure. In the last decade gene mutations have been identified that are responsible for inherited rickets and osteomalacia, particularly those that result in phosphate deficiency, hypophosphatasia, and vitamin D receptor or metabolizing enzyme mutations. Additionally, the pathogenesis of tumour-induced osteomalacia is becoming better understood. Osteomalacia may present as bone pain and tenderness, muscle pain and weakness, and skeletal deformity or fracture. Key investigations include biochemical assessment and plain radiographs. Radioisotope bone scans and bone biopsy may be considered in selected cases. Differential diagnoses include osteoporosis, seronegative arthritides, and localized soft tissue disorders. Treatment, guided by the underlying aetiology, aims to reduce symptoms, fracture risk, bone deformity and sequelae. Vitamin D deficient patients require vitamin D and calcium replacement.
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Book chapters on the topic "Calcium-deficient"

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Hellman, B. "Calcium Transport and Deficient Insulin Release." In The Pathology of the Endocrine Pancreas in Diabetes, 249–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-72691-0_14.

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Zhou, Hong Hui, Hui Li, and Ling Hong Guo. "Molecular and Crystal Structure Characterization of Calcium-Deficient Apatite." In Key Engineering Materials, 119–22. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-422-7.119.

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Shi, He Bin, Hong Zhong, Yu Liu, Feng Zhao Zhang, Ming Chuan Liang, and Ming Chen. "Preparation of Silicate Substituted Calcium Deficient Hydroxyapatite by Coprecipitation." In Key Engineering Materials, 83–86. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-422-7.83.

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Schaffer, Stephen, Viktoriya Solodushko, and Junichi Azuma. "Taurine-Deficient Cardiomyopathy: Role of Phospholipids, Calcium and Osmotic Stress." In Advances in Experimental Medicine and Biology, 57–69. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-46838-7_6.

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Roth, Hans-Peter, and Manfred Kirchgessner. "Calmodulin Concentration in Tissues of Zinc and Calcium Deficient Rats." In Trace Elements in Man and Animals 6, 119–20. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0723-5_37.

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Chen, Song, Jin Gou Ji, Yi Xu, Wei Qi Liu, Ji Da Chen, and Zhi Guo Zhou. "Preparation of Calcium-Deficient Carbonated Hydroxyapatite Nanoparticles by Microwave Process." In High-Performance Ceramics V, 1178–80. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-473-1.1178.

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Esteban, E., R. O. Carpena Ruiz, and A. Gárate. "Boron and calcium distribution in B and Ca deficient pea plants." In Boron in Soils and Plants, 187–90. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5564-9_37.

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Jokic, B., I. Jankovic-Castvan, Dj Veljković, R. Petrović, S. Drmanic, and Dj Janaćković. "Preparation of α-TCP Cements from Calcium Deficient Hydroxyapatite Obtained by Hydrothermal Method." In Bioceramics 18, 821–24. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-992-x.821.

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Billon Chabaud, Aurelie, Christian Merle, and Jean Michel Bouler. "Influence of Association Type of Bisphosphonates with Calcium-Deficient Apatite on Drug Release." In Bioceramics 20, 51–54. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-457-x.51.

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Takaya, Junji. "Calcium-Deficient Diets in Pregnancy and Nursing: Epigenetic Change in Three Generations of Offspring." In Handbook of Nutrition, Diet, and Epigenetics, 1789–801. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-55530-0_61.

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Conference papers on the topic "Calcium-deficient"

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Ipekoglu, Mehmet, and Sabri Altintas. "Synthesis of Nanosized Calcium Deficient Hydroxyapatite by Microwave." In 2009 14th National Biomedical Engineering Meeting. IEEE, 2009. http://dx.doi.org/10.1109/biyomut.2009.5130361.

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Ioku, Koji, Masanobu Kamitakahara, Tohru Ikeda, Fangming Jin, Qi Zhou, and Bing Wu. "Calcium Deficient Hydroxyapatite for Medical Application Prepared by Hydrothermal Method." In 2nd International Symposium on Aqua Science, Water Resource and Low Carbon Energy. AIP, 2010. http://dx.doi.org/10.1063/1.3529307.

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Öz, Orhan K., Asghar Hajibeigi, Carolyn Cummins, Monique van Abel, René J. Bindels, Makoto Kuro-o, Charles Y. C. Pak, and Joseph E. Zerwekh. "Aromatase Deficient Female Mice Demonstrate Altered Expression of Molecules Critical for Renal Calcium Reabsorption." In RENAL STONE DISEASE: 1st Annual International Urolithiasis Research Symposium. AIP, 2007. http://dx.doi.org/10.1063/1.2723602.

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Kato, H., K. Uchida, Y. Okada, and T. Yamaguchi. "ANALYSIS OF HYPERCOAGULABILITY BY AUTOMATED FLUOROGENIC METHODS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643053.

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In order to detect hypercoagulable state due to the increase or decrease of coagulation factors and inhibitors concentrations or the presence of active coagulation factors or tissue factor in plasma, highly sensitive automated methods were developed using fluorogenic substrate for thrombin. Coagulability of human plasma was measured by mixing 3 yl of plasma with Thromborel S (TF), calcium and Boc-Val-Pro-Arg-MCA(MCA) (Fluorogenic PT, FPT). FPT of normal plasma was shortened by the addition of purified X or VII (Final conc. 1-5 U per ml), and of thrombin (0.3-1 ng) or Xa (10500 pg). Factors VII and X contents in plasma were measured by mixing 3 yl of diluted plasma with each factor deficient plasma, TF, calcium and MCA in which 10 %-800 % of each factor was quantitatively measured. TF and Xa were measured by mixing with XII or X deficient plasma, phospholipid, calcium and MCA. By this method, 5-500 pg of Xa or 1-1000 units of TF (assuming that one vial of Thromborel S contains 2,000,000 U TF per ml) was quantitatively measured. All the experiments were performed using a centrifugal autoanalyzer (Cobas Bio) with FIA module. The reaction time to reach 0.1 relative fluorescence was calculated by a computer using a program developed by us.These automated methods were applied to examine the hypercoagulability of plasmas from patients with cerebral infarction. Sixty five samples out of 75 showed shorter FPT than control plasma. Xa was detected with the conc. of 3-13 ng Xa per ml. FPT of patient plasmas correlated with Xa content (r=0.70) and X (r=0.63). Xa activity of patient plasma was eluted in the same peak as purified X on gel-filtration of Sephacryl S-200 column and completely inhibited by anti X rabbit IgG. Xa activity was also found in normal serum. The conventional PT or chromogenic PT methods are sensitive to hypocoagulable state but not to hypercoagulab le state. The present automated methods were proved to be sensitive to hypercoagulable state and demonstrated that the presence of Xa or the increase of X concentration in plasma contributes in part to the hypercoagulable state of cerebral infarction.
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Nicham, F., and J. L. Martinoli. "AMIDOLYTIC DETERMINATION OF ANTI-ACTIVATED PROTEIN C ACTIVITY IN PLASMA." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644316.

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Anti-activated protein C (anti-APC) potency of plasma was studied using purified bovine activated protein C (Bovine APC) and the chromogenic peptide substrate CBS 65.25. The choice of bovine instead of human APC was justified by a better sensitivity (Km = 0.14 and 0.42 mM respectively). Inhibition was shown to be dramatically enhanced by the presence of Heparin and calcium. No significant difference occurred for pH values up to 8.2 for both inhibition and hydrolysis reactions.In the final test, O.l ml of 1:5 diluted plasma (Tris buffer saline, pH 8.4, containing 5 U/ml of Heparin) were incubated at 37°C with 0.2 ml of Bovine APC (0.125 U/ml). After 10 minutes of inhibition, 0.2 ml of CBS 65.25 (1.5 mM/1) were added to the mixture and the change in absorbance was recorded at 405 nm for 2 minutes. In these conditions linearity of the dose-response curve was ensured from O up to 130 % of activity (normal plasma pool being assigned to 100 %) ; day to day precision was 1.9 %. When a normal plasma was overloaded with different purified inhibitors such as antithrombin III, cl-esterase inactivator, alpha 2 macroglobulin, the measured anti-APC activities were not affected at all. It could be concluded that this test measures protein C inhibitor described by Suzuki.Levels in 23 normal individuals averaged 97.7 %, giving a normal range of 77 - 118 %. Levels were below normal in 6 of 10 patients after surgery (54.1 +/- 4.8 %), in 18 of 19 patients with liver disease (49.5 +/- 9.6 %) and in 4 of 18 coumarin treated patients (54.9 +/- 6.5 %). In 9 of 10 patients previou sly characterized as type I protein C deficient, a statistically significant increase in anti-APC activity was observed (mean 110.7 +/- 7.7 %).The use of a chromogenic peptide substrate has led to a sensitive and fast assay for anti-APC activity in plasma. That could be of interest in clinical investigations and knowledge of regulatory mechanisms in thrombotic disorders.
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Dumeignil, Franck, Benjamin Katryniok, and Negissa Ebadi Pour. "Glycerol polymerization over stable and selective calcium hydroxyapatite." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/dpka8345.

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High catalytic activity and large availability of Ca-based catalysts make them particulartly attractive for the glycerol polymerization reaction. However, this kind of catalyts usually suffers from a poor stability under the reactions conditions. We present herein the use of Ca-hydroxyapatites (HAps), a very abundant Ca source in the nature, as glycerol polymerization catalysts combining high performance in terms of selectivity and high resistance to deactivation by leaching. We have synthesized, characterized and tested Ca-rich, stochiometric and Ca-deficient HAps. The two latter ones were fully selective to triglycerol at a glycerol conversion of 15 %, at 245 °C after 8 h in the presence of 0.5 mol.% of catalyst. Under the same reaction conditions, the Ca-rich HAp was highly selective to di- and triglycerol (88 %) at a glycerol conversion of 27 %. All the catalysts proved to be stable with negligible Ca species leaching according to the ICP-OES results.
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