• A commercial preparation of ACP is casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), derived from cow milk. (wikipedia.org)
  • It is believed that ACP hydrolyzes under physiological temperatures and pH to form octacalcium phosphate as an intermediate, and then surface apatite. (wikipedia.org)
  • In aqueous media, ACP is easily transformed into crystalline phases such as octacalcium phosphate and apatite due to the growing of microcrystallites. (wikipedia.org)
  • Hydroxyapatite (HAp) is a particular kind of calcium phosphate, which belongs to the apatite group of minerals. (lamberti.com)
  • The pathways to crystals are still under debate, especially for materials relevant to biomineralization, such as calcium phosphate apatite known from bone and teeth. (au.dk)
  • Furthermore, when the pyrophosphate concentration exceeded ~1% of the calcium concentration, the resultant crystals had reduced size anisotropy suggesting that pyrophosphate interacts in a site-specific manner with the formation of apatite crystals. (au.dk)
  • The core, intermediate and surface envelopes consist in calcium phosphate apatite associated with whitlockite and amorphous carbonated calcium phosphate, all clarified by Fourier Transform InfraRed spectroscopy. (academie-sciences.fr)
  • When exposed to body fluids, mesoporous bioactive glasses (MBGs) of the CaO-SiO2-P2O5 system develop a bone-bonding surface layer that initially consists of amorphous calcium phosphate (ACP), which transforms into hydroxy-carbonate apatite (HCA) with a very similar composition as bone/dentin mineral. (repositoriosaludmadrid.es)
  • Apatite (in Greece "changeable") is a phosphate of calcium. (org.ua)
  • Apatite along with ������� , being thin mixture of apatite with other phosphates, serves as raw material for the receipt preparation of phosphoric acid. (org.ua)
  • Apatite - it the phosphate of calcium, crystallizable in hexagonal Crystal structure, usually be found as continuous grainy the masses. (org.ua)
  • Enamel-like apatite crown covering amorphous mineral in a crayfish mandible. (mpg.de)
  • In this study, we reveal for the first time the chemical composition of the exoskeleton of Daphnia magna, using Raman spectroscopy , to be composed of α-chitin and proteins with embedded amorphous calcium carbonate (ACC). (nature.com)
  • For example, the presence of calcium during struvite precipitation can decrease mineral purity by co-precipitating calcium carbonate and calcium phosphate minerals with struvite. (rsc.org)
  • Layered growth of crayfish gastrolith: about the stability of amorphous calcium carbonate and role of additives. (mpg.de)
  • Plant cystoliths: a complex functional biocomposite of four distinct silica and amorphous calcium carbonate phases. (mpg.de)
  • Then, using FTIR spectra and the map, the collagen content and ratios corresponding to matrix maturity, mineralization, carbonate substitution, acid phosphate substitution, and crystallinity were calculated. (hindawi.com)
  • The biochemical analysis showed that the bone with an SF presented a bone immaturity characterized by a higher content of collagen, lower matrix maturity, mineralization, carbonate and acid phosphate substitutions, and greater crystallinity compared to the healthy bone, being checked by the ratio analysis and biochemical mapping. (hindawi.com)
  • Characterization results confirmed the presence of calcium carbonate crystallites along with the amorphous silica matrix. (degruyter.com)
  • ACP is generally categorized into either "amorphous tricalcium phosphate" (ATCP) or calcium-deficient hydroxyapatite (CDHA). (wikipedia.org)
  • It has been demonstrated that ACP has better osteoconductivity and biodegradability than tricalcium phosphate and hydroxyapatite in vivo. (wikipedia.org)
  • By playing with composition, size and shape, surface and multi-functionality modification, a wide range of hydroxyapatite-based application properties can be achieved. (lamberti.com)
  • Adsorption of mucin by hydroxyapatite is related mainly to Ca-dependent electrostatic interactions between calcium ions and COO- of mucin [5]. (romj.org)
  • Dental enamel is composed of a huge number of highly mineralized prisms, and its hardness is due to a high percentage of inorganic matrix (95%) made of hydroxyapatite crystals (calcium phosphate) and low percentage of organic protein nature matrix (0.36 to 2%) together with polysaccharides 1 . (bvsalud.org)
  • In order to minimize such demineralization after contact with bleaching agents, some biomaterials such as fluoride, hydroxyapatite, calcium ions and amorphous calcium have been added to the composition of those whitening agents 9 . (bvsalud.org)
  • The transformation of hydroxyapatite to (𝛽/𝛼) tricalcium phosphate phases during sintering has been explored using Raman spectroscopy and X-ray diffraction techniques. (ias.ac.in)
  • Inorganic material is made up mainly of hydroxyapatite or other types of calcium phosphate. (wikilectures.eu)
  • Precipitation from a moderately supersaturated and basic solution of a magnesium salt produces amorphous magnesium calcium phosphate (AMCP), in which magnesium incorporated into the ACP structure. (wikipedia.org)
  • Effects of strontium-substitution in sputter deposited calcium phosphate coatings on the rate of corrosion of magnesium alloys. (pitt.edu)
  • As early as 1797, Wollaston described urinary stone components as magnesium and ammonium phosphate in his publication entitled "On gouty and urinary concretions" [ 11 ]. (academie-sciences.fr)
  • Calcium oxalate/calcium phosphate, magnesium-ammonium phosphate, and staghorn calculi are associated with alkaline urine. (medscape.com)
  • At a microscopic level, the crystals arrange into lamellar structures, in the order of hundreds of nm, embedded in an amorphous-like matrix. (unav.edu)
  • Following the formation of an initial amorphous phase, needle shaped crystals formed that had an octacalcium phosphate-like composition, but were too small to display the full 3D periodic structure of octacalcium phosphate. (au.dk)
  • At later growth stages the crystals became apatitic, as revealed by changes in the lattice constant and calcium content. (au.dk)
  • Deposit - deposits in urine could be due to red blood cells ( RBC ), pus cells ( PC ) , calcium oxalate monohydrate ( COM ) crystals, calcium oxalate dihydrate ( COD ) crystals, uric acid crystals, amorphous phosphates, epithelial cells and sperms. (mfine.co)
  • The resulting amorphous mixture consists mostly of calcium and phosphate, but also contains varying amounts of water and hydrogen and hydroxide ions, depending on the synthesis conditions. (wikipedia.org)
  • Calculations support the description of a cluster with central Ca2+ ion surrounded by six phosphate PO43− anions, which in turn are surrounded by eight further calcium ions. (wikipedia.org)
  • The idea behind it is that the posner molecules meld and release calcium-ions which stimulises the neurons. (wikipedia.org)
  • Kalident is a HAp-based formulation that, providing topical sources of Calcium and Phosphate ions, is able to strongly enhance the natural remineralization process induced by saliva. (lamberti.com)
  • As vertebrates form mineralized tissues such as bone and teeth they use amorphous mineral precursors to store ions for use as needed. (nist.gov)
  • Nanoparticles were produced at different calcium to phosphorus ratios (1.20-2.19). (metu.edu.tr)
  • After the pH cycling, the final surface hardness (SH2) will be determined for the calculation of the percentage of surface hardness loss (%SH) and surface hardness recovery (%SHR), integrated loss of subsurface hardness (delta KHN), mineral content of enamel (gHAp.cm-3), concentration of fluoride (F) calcium (Ca) and phosphorus (P) and analysis of the morphology and surface chemical composition by Scanning Electron Microscopy and X-ray Dispersive Energy enamel. (fapesp.br)
  • It is used in the manufacture of phosphorus, phosphates, and fertilizers. (org.ua)
  • Assuming that enamel is mainly composed by calcium, phosphorus, oxygen and carbon Ca10(PO4)6(OH)2, in vitro assays designed to identify these components are desirable to reveal possible alterations of enamel's chemical structure. (bvsalud.org)
  • These consist of rebuilding the enamel minerals lost during the carious process with calcium, phosphorus, and fluoride preparations. (tooth-life.com)
  • Recovery of phosphorus (P) from various types of wastewater has been proposed as a more sustainable alternative to phosphate rock mining due to concerns about the finite supply of phosphate rock, economic scarcity of phosphate, and the critical need for P in agriculture and food production. (rsc.org)
  • The term phosphate rock (or phosphorite) is used to denote any rock with high phosphorus content. (mineralseducationcoalition.org)
  • The largest and least expensive source of phosphorus is obtained by mining and concentrating phosphate rock from the numerous phosphate deposits of the world. (mineralseducationcoalition.org)
  • Phase Composition Control of Calcium Phosphate Nanoparticles for Tunable Drug Delivery Kinetics and Treatment of Osteomyelitis. (chapman.edu)
  • In vitro cytotoxicity studies using human derived stem cells showed that there was no composition and dose dependent cytotoxic effect of nanoparticles on stem cells (5-50 μg/ml). (metu.edu.tr)
  • Future studies are suggested to be investigated on use of urine derived stem cells seeded silk fibroin and citrus pectin based scaffolds reinforced with calcium phosphate nanoparticles as a potential engineered construct for regeneration of bone. (metu.edu.tr)
  • Calcium phosphate (CaP)-based biomaterials have superior properties and have been widely used for bone defect repair, due to their similarities to the inorganic components of human bones. (encyclopedia.pub)
  • Watanabe T et al relates to the formulation of solid compositions comprising indomethacin and silica. (allindianpatents.com)
  • The indomethacin is physically mixed with the silica by co-grinding or melting resulting in amorphous form of indometacin (Watanabe T et al. (allindianpatents.com)
  • These results were correlated with the proteoliposomes' catalytic activity and ability to induce the precipitation of amorphous calcium phosphate (ACP) in vitro. (bvsalud.org)
  • Objective - Mucin can promote formation of gallstones via precipitation with calcium phosphate. (romj.org)
  • Hybrid anion exchange resin containing hydrous ferric oxide (HAIX-Fe) was used in column tests to remove phosphate (PO 4 ) from fresh urine, hydrolyzed urine, and anaerobic digester filtrate, and subsequently recover PO 4 as struvite (MgNH 4 PO 4 ·6H 2 O) or potassium struvite (MgKPO 4 ·6H 2 O) via precipitation in the spent regenerant. (rsc.org)
  • Stabilisation of amorphous calcium phosphate in polyethylene glycol hydrogels, Acta Biomaterialia, 2019. (jenkemusa.com)
  • The purpose of this study was to evaluate the association of treatments with fluoridated dentifrices and supplemented with sodium trimetaphosphate (TMP) and amorphous calcium phosphate casein (CPP-ACP) phosphopeptide (MI Paste Plus®) in reducing demineralization and promoting remineralization, respectively, of dental enamel. (fapesp.br)
  • Aim: To evaluate enamel microhardness and morphology after bleaching with hydrogen peroxide containing calcium in different concentrations. (bvsalud.org)
  • Conclusion: Calcium in association with a higher hydrogen peroxide concentration may decrease microhardness changes on enamel. (bvsalud.org)
  • Changes in chemical composition of enamel may reflect on modified values of mechanical properties, resulting in undesirable effects such as reduction in hardness and/or flexural strength 4 . (bvsalud.org)
  • Some studies showed that dental bleaching alters the enamel chemically and have shown decreased calcium values in enamel 5-6,8 . (bvsalud.org)
  • The following table shows the representation of other common forms of calcium phosphate in enamel. (wikilectures.eu)
  • Herein, we used TNAP-harboring proteoliposomes made of either pure dimyristoylphosphatidylcholine (DMPC) or DMPC mixed with either Chol, SM or both of them as MV biomimetic systems to evaluate how the composition modulates the lipid microenvironment and, in turn, TNAP incorporation into the lipid bilayer by means of calorimetry. (bvsalud.org)
  • Repositorio consejería de sanidad de madrid: Proton Environments in Biomimetic Calcium Phosphates Formed from Mesoporous Bioactive CaO-SiO2-P2O5 Glasses in Vitro: Insights from Solid-State NMR. (repositoriosaludmadrid.es)
  • Information from various 1H-based solid-state nuclear magnetic resonance (NMR) experiments was combined to elucidate the evolution of the proton speciations both at the MBG surface and within each ACP/HCA constituent of the biomimetic phosphate layer formed when each of three MBGs with distinct Ca, Si, and P contents was immersed in a simulated body fluid (SBF) for variable periods between 15 min and 30 days. (repositoriosaludmadrid.es)
  • Ion-association complexes unite classical and non-classical theories for the biomimetic nucleation of calcium phosphate. (mpg.de)
  • X-ray diffraction (XRD) patterns, high resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED) analyses revealed the amorphous nature of the particles at low Ca/P ratios. (metu.edu.tr)
  • Mapping lattice spacing and composition in biological materials by means of microbeam X-ray diffraction. (mpg.de)
  • However, whilst its unequivocal presence in bones and teeth is debated, there is evidence that transient amorphous precursors are involved in the development of bone and teeth. (wikipedia.org)
  • Additionally, we aimed to synthesize nano calcium phosphates with different Ca/P ratios using Flame Spray Pyrolysis method for preparing polymer/bioceramic composite scaffolds for future studies. (metu.edu.tr)
  • To reinforce scaffolds with bioactive agents, nano sized calcium phosphates were synthesized. (metu.edu.tr)
  • Fourier transform infrared (FTIR) spectroscopy gives information about the bone composition and also can determine the amount of a molecule. (hindawi.com)
  • relates to the formulation of solid dispersions comprising a hardly soluble drug substance together with a carrier (PVP), wherein the the drug substance is present in amorphous form or in crystalline form (Khougaz K et al. (allindianpatents.com)
  • 6 Thus, P recovery from the most concentrated waste streams that comprise domestic wastewater, such as human urine and anaerobic digester sidestreams, 7,8 would provide an alternative to phosphate rock fertilizers while having the important benefits of decreasing nutrient loading to receiving waters and reducing operational problems caused by mineral scaling at wastewater treatment plants. (rsc.org)
  • The most important use of phosphate rock, though, is in the production of phosphate fertilizers for agriculture. (mineralseducationcoalition.org)
  • Crystallization was conducted from calcium chloride (0.2 M) and sodium phosphate (0.12 M) at pH 12 where hydrogen phosphate is the dominant phosphate species and at 60 ◦ C to allow the synchrotron measurements to be conducted in a timely fashion. (au.dk)
  • The group of 7.5% hydrogen peroxide with calcium showed a lower percentage of hardness loss in relation to other groups. (bvsalud.org)
  • Urea imparts the hydrogen bonding and calcium ion from the calcium chloride, as a Lewis acid was added to the system to compensate for the pH decrease due to the addition of urea. (preprints.org)
  • The chemical compositions of the phases are also confirmed with inductively coupled plasma optical emission spectrometry (ICP-OES) and energy dispersive X-ray (EDX) techniques. (ias.ac.in)
  • Unfolded phosphopeptides are believed to sequester ACP nanoclusters and form stable complexes in other biofluids such as urine and blood serum, preventing deposition of insoluble calcium phosphates and calcification of soft tissue. (wikipedia.org)
  • In the laboratory, stored samples of formulations of artificial blood, serum, urine and milk (which approximate the pH of the naturally occurring fluid) deposit insoluble phosphates. (wikipedia.org)
  • A urine test involves testing the urine sample of the physical, chemical, and microscopic composition of the urine and analyzing the same for any disease. (mfine.co)
  • Urine color varies based on the urine concentration and chemical composition. (medscape.com)
  • The concentration of calcium phosphate is higher in milk than in serum, but it rarely forms deposits of insoluble phosphates. (wikipedia.org)
  • US 4 639 370 rotates to the formulation of powdery compositions comprising a poorly water-soluble drug in combination with a water Insoluble carrier (cross-linked PVP). (allindianpatents.com)
  • Mapping amorphous calcium phosphate transformation into crystalline mineral from the cell to the bone in zebrafish fin rays. (mpg.de)
  • Tissue-nonspecific alkaline phosphatase (TNAP) degrades inorganic pyrophosphate (PPi), a potent inhibitor of mineralization, and contributes Pi (Phosphate) from ATP to initiate mineralization. (bvsalud.org)
  • Polydisperse calcium phosphate nanowires (CP) were studied as calcium phosphate nano- and microparticles varying in the length and thickness. (romj.org)
  • Amorphous calcium phosphate (ACP) is a glassy solid that is formed from the chemical decomposition of a mixture of dissolved phosphate and calcium salts (e.g. (wikipedia.org)
  • Material and Methods - Polydisperse calcium phosphate nanowires (CP) were prepared from hot gelatin solution and according to scanning electron microscopy (SEM) had the length 1-10 μm and thickness 50-450 nm. (romj.org)
  • The assessment of bioactivity in SBF indicated that all compositions showed a fast bioactive response after only six hours of immersion period. (degruyter.com)
  • Chemical Properties of Calcium Phosphate" Encyclopedia , https://encyclopedia.pub/entry/31249 (accessed December 02, 2023). (encyclopedia.pub)
  • A new series of copper doped phosphate glasses with a chemical formula 42P 2 O 5 -40ZnO-2CaO-(16-x)Na 2 OO-xCu 2 OO where x = 0, 2, 4, 6, 8, and 10 mol %, the glass samples were prepared by using the melt-quenching technique. (oldcitypublishing.com)
  • Hence, the present work shows a new chemical composition with a new physical properties that can be used as an optical bandpass filter. (oldcitypublishing.com)
  • Chemical analysis showed a mixed composition. (academie-sciences.fr)
  • On each sample, duplicate synchrotron based X-ray total scattering measurements were made to obtain a one-dimensional representation of the atomic structure and five measurements of the chemical composition. (nist.gov)
  • Our research elucidated chemical composition and structure of WSNP, WSAP-1 and WSAP-2. (springeropen.com)
  • The aim of the present work was to investigate the chemiluminescence (CL) of neutrophils activated with calcium phosphate particles coated with mucin. (romj.org)
  • We also demonstrate successful deposition of amorphous IGZO thin films by pulse laser deposition using the targets prepared by the proposed sintering process. (ias.ac.in)
  • Indium-gallium-zinc oxide (IGZO) is a novel amorphous oxide semiconductor, which recently has received much attention for thin film transistors (TFTs) in flat panel displays. (ias.ac.in)
  • In this contribution, we proposed a new solvent system for PAs by replacing a portion of the FA with urea and calcium chloride (FAUCa). (preprints.org)
  • The compositions are made by a process including dissolving the drug in a volatile organic solvent together with a hydrophilic polymer and evaporating the solvent to dryness to form a co-precipitate of the drug with the hydrophilic polymer. (allindianpatents.com)
  • Calcium phosphatic stones are characteristic of communities, such as those of the Neolithic period, where the diet was rich in cereal carbohydrates and poor in animal proteins. (academie-sciences.fr)
  • Dau, H. (2015) Water oxidation by amorphous cobalt-based oxides: in situ tracking of redox transitions and mode of catalysis. (fu-berlin.de)
  • The performance of the coatings correlated to coating composition, coating density and also the presence of sealants. (twi-global.com)
  • EP 0474 098 relates to the formulation of solid compositions comprising a hardly soluble drug substance co-precipitated with 3 carrfer comprising a water-soluble excipient (PVP) and a blodegradable excipient (polyactic acid). (allindianpatents.com)
  • US 6 027 747 relates to the formulation of solid compositions comprising a hardly soluble drug substance together with a carrier (PVP). (allindianpatents.com)
  • Still, owing to its highest drug adsorption efficiency, the most bacteriostatically effective phase was amorphous CAP with the minimal inhibitory concentration of less than 1 mg/ml. (chapman.edu)
  • For-example, attempts to increase the surface area of a compound, either by spraying the amorphous compound onto an inert carrier or by micronising the compound. (allindianpatents.com)