2017 aqueous phosphate calcium and phosphate hydroxyapatites. Medical search. Frequent questions

An aqueous method for the controlled manganese (Mn2+) substitution in superparamagnetic iron oxide nanoparticles for contrast enhancement in MRI. (bioroot.in)
Guerrero-Beltrán, C.E. Hydroxyapatite Nanoparticles in Drug Delivery. (encyclopedia.pub)
Hydroxyapatite Nanoparticles in Drug Delivery" Encyclopedia , https://encyclopedia.pub/entry/15487 (accessed December 05, 2023). (encyclopedia.pub)
In this sense, biomaterials can be categorized into polymers, liposomes, micelles, dendrimers, and calcium phosphate (CaP) nanoparticles, where each will show a different type of bioactivity. (encyclopedia.pub)
Foliar spray of calcium borate Nanoparticles (CaB 4 O 7 -NPs) was applied as a nano-fertilizer on Lactuca sativa and Cucurbita pepo , the application of CaB 4 O 7 -NPs promoted shoot and root biomass production of lettuce by 2.7 and 1.9-fold compared to the untreated plants, respectively [14]. (jchemrev.com)
The treatment of the Blackeye bean plant with hybrid chitosan-calcium oxide nanoparticles increased the growth of the plant by 8 cm and 10.7 cm compared with 6 cm for the untreated plant [15]. (jchemrev.com)
The urea-modified hydroxyapatite nanoparticles were encapsulated into cavities of the softwood of Gliricidia sepium , such nano-fertilizer composition exhibited a moderate and controlled delivery of nitrogen at three divergent pH values (4.2, 5.2, and 7) up to day 60 compared to the commercial fertilizer [19]. (jchemrev.com)
This study was aimed at fabrication and characterization of conjugated gold-cockleshell-derived calcium carbonate nanoparticles (Au-CSCaCO3NPs) for biomedical application. (documents.pub)

In this study, we develop an integrated process for the direct recovery and separation of dicalcium phosphate dihydrate for fertilizer and livestock feed additive production from a low-grade (2.0 wt% P) iron-rich (19.7 wt% Fe) phosphate ore. (rsc.org)
The developed process achieves around 70% phosphorus recovery as an industrial-grade (19 wt% P) dicalcium phosphate dihydrate product with minimal iron, magnesium, and aluminum contamination, while also producing value-added calcium sulfate dihydrate (gypsum) and iron/magnesium byproducts. (rsc.org)
40% P 2 O 5 ), while livestock feed additives are usually in the form of dicalcium phosphate (CaHPO 4 ), monocalcium phosphate (Ca(H 2 PO 4 ) 2 ), or defluorinated phosphate (Ca 3 (PO 4 ) 2 ). (rsc.org)
However concentration below 27% may create a dicalcium phosphate monohydrate that cannot be rinsed off. (onlinedentallearning.in)

Composites with varied proportions of beta-Ca-3(PO4)(2) and ZnO were obtained through an in situ aqueous precipitation method under slightly basic (pH approximate to 8) conditions. (ua.pt)
Hydroxyapatite-PMMA composites. (dokumen.pub)
Hydroxyapatite-PS composites. (dokumen.pub)

Bone substrates like hydroxyapatite and tricalcium phosphate have been widely used for promoting spinal fusion and reducing the complications caused by autograft. (biomedcentral.com)
In this study, we compared the osteoinductivity of whitlockite, hydroxyapatite, and tricalcium phosphate porous particles with SD rat spine posterolateral fusion model and investigated whether whitlockite could induce ectopic ossification with SD rat abdominal pouch model. (biomedcentral.com)
The micro-CT result from the posterolateral fusion model showed whitlockite had slightly but significantly higher percent bone volume than tricalcium phosphate, though none of the materials formed successful fusion with surrounding bone tissue. (biomedcentral.com)
Whitlockite had a potential of being a better bone substrate hydroxyapatite and tricalcium phosphate in spinal fusion with low risk of inducing ectopic ossification. (biomedcentral.com)

2020 ), hydroxyapatite (HAP) (Wang et al. (researchsquare.com)

Strontium Hydroxyapatite scaffolds engineered with stem cells aid osteointegration and osteogenesis in osteoporotic sheep model, Colloids Surf B Biointerface. (bioroot.in)

Synthesis of Hybrid Polyphenol/Hydroxyapatite Nanomaterials with Anti-Radical Properties. (upmc.fr)

Up to 50% by volume and 70% by weight of human bone is a modified form of hydroxyapatite, known as bone mineral. (wikipedia.org)
This study aimed to investigate and explore the possibility of using eggshell powder (ES) and natural hydroxyapatite (HAp) derived from chicken bone for adsorption of Sr(II) ions from aqueous solutions. (scialert.net)
The artificial neural networks (ANN) are carried out for prediction of adsorption efficiency for the removal of Sr(II) ions from aqueous solution by eggshell (ES) and bone ash-hydroxyapatite (BA-HAp). (scialert.net)
In the literature it can be found, there are few studies relating to removal of strontium from aqueous solutions using bone ash 18 and eggshell powder 19 . (scialert.net)
These studies are limited in the literature although there is no study about the artificial neural networks was used for modeling of adsorption of Sr(II) from aqueous solutions by eggshell and bone ash. (scialert.net)
Hydroxyapatite (HAP) has been the gold standard in the biomedical field due to its composition and similarity to human bone. (encyclopedia.pub)
Calcium is necessary for bone mineralization and is an important cofactor for hormonal secretion in endocrine organs. (medscape.com)
PTH stimulates osteoclastic bone reabsorption and distal tubular calcium reabsorption and mediates 1,25-dihydroxyvitamin D (1,25[OH] 2 D) intestinal calcium absorption. (medscape.com)
[ 4 ] Vitamin D stimulates intestinal absorption of calcium, regulates PTH release by the chief cells, and mediates PTH-stimulated bone reabsorption. (medscape.com)
Calcitonin lowers calcium by targeting bone, renal, and GI losses. (medscape.com)

Calcium sulphate (CaSO 4 ) and calcium carbonate (CaCO 3 ) are the other two popular choices of crosslinkers, however due to their lower solubility within an aqueous solution the gelation time is slower. (nature.com)
Aragon-ite as a calcium carbonate polymorph richly exists incockle shell (Anadara granosa), a molluscs popularly,also found in Malaysia [22]. (documents.pub)
Aragonite is biogenic unlikethe other calcium carbonate polymorphs of calcite andvaterite, making up to 95-98% of cockle shell. (documents.pub)
Currently, most of prior researchstudies have revealed mainly two methods of productionof calcium carbonate [26]. (documents.pub)
They include the co-precipitation or double decomposition and carbonationof CO2 gas through calcium hydroxide under controlledsettings, which regrettably none produces biogenic cal-cium carbonate [26-28]. (documents.pub)
Fifty percent of plasma calcium is ionized, 40% is bound to proteins (90% of which binds to albumin), and 10% circulates bound to anions (eg, phosphate, carbonate, citrate, lactate, sulfate). (medscape.com)

During demineralisation, calcium and phosphorus ions are drawn out from the hydroxyapatite. (wikipedia.org)
The mineral ions introduced during remineralisation restore the structure of the hydroxyapatite crystals. (wikipedia.org)
If fluoride ions are present during the remineralisation, through water fluoridation or the use of fluoride-containing toothpaste, the stronger and more acid-resistant fluorapatite crystals are formed instead of the hydroxyapatite crystals. (wikipedia.org)
The natural calcium based adsorbents seems to be a suitable low-cost material for removing strontium ions from aqueous solutions. (scialert.net)
There are many techniques for removing metal ions from aqueous solutions 2 , 3 . (scialert.net)
In order to remove Sr ions from aqueous solutions, organic and inorganic adsorbents have been widely employed 4 - 10 . (scialert.net)
In this study, a strontium-doped hydroxyapatite (Sr-HAP) was synthesized by the sol-gel method, which used as adsorbent to remove lead ions (Pb 2+ ) from water. (researchsquare.com)

As of 2019[update], the use of hydroxyapatite, or its synthetically manufactured form, nano-hydroxyapatite, is not yet common practice. (wikipedia.org)

A periodic layer underneath the impact layer composed of hydroxyapatite with lower calcium and phosphorus content (thus resulting in a much lower modulus) inhibits crack growth by forcing new cracks to change directions. (wikipedia.org)
For IC, the dentin layer was removed, leaving the enamel that was crushed, and autoclaved for chemical quantification (calcium, fluorine, and phosphorus). (thejcdp.com)
Phosphorus supplements are usually produced from high-grade phosphate rock concentrates (28-40 wt% P 2 O 5 ). (rsc.org)
The main role of phosphate supplements is to deliver soluble and bioavailable phosphorus to plants and livestock as crop fertilizers or animal feed additives. (rsc.org)
In contrast, by using 0.05 mol/L HNO3 via the flow method, 22% of the slag was dissolved in 100 min giving a more selective dissolution of phosphate from the slag compared with the batch method, which indicated that this method would be incompatible with mass processing for the purpose of extracting phosphorus in the bulk phase. (tokushima-u.ac.jp)
Vitiron Suscaps (Calcium) acetate is a phosphate binder indicated to reduce serum phosphorus in patients with end stage renal disease (ESRD). (sdrugs.com)
Calcium acetate is a phosphate binder indicated for the reduction of serum phosphorus in patients with end stage renal disease. (sdrugs.com)
Maintain the serum calcium-phosphorus (Ca x P) product below 55 mg 2 /dL 2 . (sdrugs.com)
Calcium levels are also affected by magnesium and phosphorus. (medscape.com)

Effects of bleaching agents containing fluoride and calcium on human enamel. (thejcdp.com)
The most relevant inorganic Fluorides are Hydrogen fluoride, Calcium fluoride, and Sodium fluoride. (dentistofnaples.com)
1. Fluoride becomes incorporated into the hydroxyapatite crystals of teeth, rendering them more resistant to acid attack. (dentistofnaples.com)
Examples include aqueous solutions of sodium fluoride and stannous fluoride, low pH solutions such as the acidulated phosphate fluoride system. (dentistofnaples.com)

Each technique yields hydroxyapatite crystals of varied characteristics, such as size and shape. (wikipedia.org)
Title: Citrate, not phosphate, can dissolve calcium oxalate monohydrate crystals and detach these crystals from renal tubular cells. (aablocks.com)

Hydroxyapatite can be synthesized via several methods, such as wet chemical deposition, biomimetic deposition, sol-gel route (wet-chemical precipitation) or electrodeposition. (wikipedia.org)
The hydroxyapatite nanocrystal suspension can be prepared by a wet chemical precipitation reaction following the reaction equation below: 10 Ca(OH)2 + 6 H3PO4 → Ca10(PO4)6(OH)2 + 18 H2O The ability to synthetically replicate hydroxyapatite has invaluable clinical implications, especially in dentistry. (wikipedia.org)
The process combines leaching using dilute sulfuric acid (0.29 M) and selective precipitation using calcium oxide. (rsc.org)
Title: Calcium chloride and sodium phosphate in neonatal parenteral nutrition containing TrophAmine: precipitation studies and aluminum content. (aablocks.com)

2004 ) used calcined hydroxyapatite to adsorb Pb 2+ , Zn 2+ and Cu 2+ , and found that at pH 5, the adsorption capacity of HAP on Pb 2+ , Zn 2+ and Cu 2+ were 85.6, 29.8 and 20.6 mg/L, respectively. (researchsquare.com)
2015 ) prepared a hydroxyapatite/chitosan (HAP/CS) porous material with a pore size of 100 ~ 300mm to adsorb Pb 2+ , and its maximum adsorption capacity was 264.42 mg/g. (researchsquare.com)

Their dactyl appendages have excellent impact resistance due to the impact region being composed of mainly crystalline hydroxyapatite, which offers significant hardness. (wikipedia.org)
Hydroxyapatite (HAP, Ca 10 (PO 4 ) 6 (OH) 2 ) has a hexagonal prismatic structure that exposes two crystalline surfaces: prism-faceted a- and basal-faceted c-surfaces. (osti.gov)
article{osti_1543698, title = {Effects of Controlled Crystalline Surface of Hydroxyapatite on Methane Oxidation Reactions}, author = {Oh, Su Cheun and Xu, Jiayi and Tran, Dat T. and Liu, Bin and Liu, Dongxia}, abstractNote = {Hydroxyapatite (HAP, Ca10(PO4)6(OH)2) has a hexagonal prismatic structure that exposes two crystalline surfaces: prism-faceted a- and basal-faceted c-surfaces. (osti.gov)

At present the most frequent choice of ionic crosslinker is Calcium Chloride (CaCl 2 ) as it typically leads to rapid gelation due to its high solubility in aqueous solutions 21 . (nature.com)
and the liquid consists of calcium chloride which is a setting accelerator and water-reducing agent in aqueous solution [ 12 ]. (biomedcentral.com)

Osteogenic efficacy of Strontium Hydroxyapatite micro-granules in osteoporotic rat model. (bioroot.in)
In this work, a strontium-doped hydroxyapatite (Sr-HAP) was synthesized by the sol-gel method. (researchsquare.com)

Application of 50% ortho phosphoric acid for 60 seconds to enamel surface results in formation of a mono calcium phosphate monohydrate precipitate that can be rinsed off. (onlinedentallearning.in)

Title: Comparison of patient acceptance of sodium phosphate versus polyethylene glycol plus sodium picosulfate for colon cleansing in Japanese. (aablocks.com)
Title: Budget-impact model for colonoscopy cost calculation and comparison between 2 litre PEG+ASC and sodium picosulphate with magnesium citrate or sodium phosphate oral bowel cleansing agents. (aablocks.com)

Dr. George E. STAN , Scientific researcher rank I (since 2017), born in 1981, graduated the Faculty of Materials Science and Engineering (SIM) - Section "Medical Engineering" at University Politehnica of Bucharest (UPB) (2005), has a MSc degree in Biomaterials (UPB) (2007), and a PhD degree in Materials Engineering (UPB) (2011). (infim.ro)

Hydroxyapatite-collagen nanocomposites. (dokumen.pub)
Re-wetting done with water or aqueous re-wetting agents will cause the collapsed collagen network to raise and restore its spatial configuration. (onlinedentallearning.in)

In the wet phosphoric acid process, the phosphate rock is reacted with sulfuric acid (H 2 SO 4 ), producing gypsum (CaSO 4 ·2H 2 O) and aqueous phosphoric acid (reaction (1) ). (rsc.org)

Xie, X. , Electrochemical Cutting in Weak Aqueous Electrolytes: The Strategy for Efficient and Controllable Preparation of Graphene Quantum Dots. (yuvalyoaz.com)

The sites occupied solely by phosphate anions in stoichiometric hydroxyapatite, are occupied by phosphate or hydrogen phosphate, HPO2−4, anions. (wikipedia.org)

2017 ) studied the magnetic hydroxyapatite-mixed oxidation of multi-walled carbon nanotubes (mHAP-oMWCNTs) to remove Pb 2+ in water, and the results showed that mHAP-oMWCNTs showed better performance than mHAP, mMWCNT and HAP-oMWCNTs. (researchsquare.com)
2013 ) prepared Si-CHAP by hydrothermally doping silicon carbon into hydroxyapatite. (researchsquare.com)

Pure hydroxyapatite powder is white. (wikipedia.org)
Aqueous tape-cast slurries of hydroxyapatite with a solid loading of 32 vol% were prepared from various fractions of aggregated (mean particle size 4.7 - 5.6 μm) and dispersed powder (mean particle size 0.17 - 0.29 μm). (ceramic-science.com)

Carbonated calcium-deficient hydroxyapatite is the main mineral of which dental enamel and dentin are composed. (wikipedia.org)
Hydroxyapatite is the main mineral component of enamel in teeth. (wikipedia.org)

These variations have a marked effect on the biological and mechanical properties of the compound, and therefore these hydroxyapatite products have different clinical uses. (wikipedia.org)

In clinical studies, patients have occasionally experienced nausea during Vitiron Suscaps (Calcium) acetate therapy. (sdrugs.com)
In clinical studies, Vitiron Suscaps (Calcium) acetate has been generally well tolerated. (sdrugs.com)
Clinical signs and symptoms are observed only with decreases in ionized calcium concentration (normally 4.5-5.5 mg/dL). (medscape.com)

Hydroxyapatite: Structure and properties. (dokumen.pub)

A 70-kg person has approximately 1.2 kg of calcium in the body, more than 99% of which is stored as hydroxyapatite in bones. (medscape.com)
Approximately 500 mg of calcium is removed from the bones daily and replaced by an equal amount. (medscape.com)

Méthodologie expérimentale : plans statistiques d'expérience, en particulier dans le domaine des biomatériaux (planification d'expériences in vitro et in vivo). (epfl.ch)
Therefore the aim of this study was to evaluate in vitro the color change of coronal tooth structure after placing various calcium silicate-based materials in the pulp chamber in the presence or absence of blood. (biomedcentral.com)

Calcium-deficient (non-stochiometric) hydroxyapatite, Ca10−x(PO4)6−x(HPO4)x(OH)2−x (where x is between 0 and 1) has a Ca/P ratio between 1.67 and 1.5. (wikipedia.org)
The Ca/P ratio is often used in the discussion of calcium phosphate phases. (wikipedia.org)

Title: Interaction of the non-phosphorylated peptide G7-18NATE with Grb7-SH2 domain requires phosphate for enhanced affinity and specificity. (aablocks.com)

Hydroxyapatite (IMA name: hydroxylapatite) (Hap, HAp, or HA) is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH), often written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. (wikipedia.org)
1,4-6 The P 2 O 5 grade, mineral form, and calcium content of these products are critical for their effective performance in their target applications and their market value. (rsc.org)

The textbook has also used his original research work in hydroxyapatite as examples. (ntu.edu.sg)

Title: Influences of pH, heavy metals and phosphate and their co-influences on the sorption of pentachlorophenol on cyanobacterial biomass. (aablocks.com)

Therefore, early in the treatment phase during the dosage adjustment period, monitor serum Vitiron Suscaps (Calcium) levels twice weekly. (sdrugs.com)
The parathyroid gland has a remarkable sensitivity to ionized serum calcium changes. (medscape.com)

In order to remove the Fe-species in the aqueous solution obtained by the batch method using 1.0 mol/L HNO3, which has been referred to as the "slag solution," it was necessary to add calcium hydroxyapatite (CaHAp) to the slag solution. (tokushima-u.ac.jp)
The amounts of phosphate in the slag solution and in the pink solid were 3.5 and 42.0 mol%, respectively, indicating that the treatment suggested in the present study could be used for the recovery and enrichment of phosphate, that is, phosphorous, from dephosphorization slag. (tokushima-u.ac.jp)

Nanocrystalline and nanostructured TiO2-Cr2O3 thin films and powders were prepared by a facile and straightforward aqueous particulate sol-gel route at low temperature of 400°C. The prepared sols showed a narrow particle size distribution with hydrodynamic diameter in the range of 17.7 nm to 19.0 nm. (sharif.edu)

Anatomy11

Organisms7

Diseases10

Chemicals and Drugs174

Analytical, Diagnostic and Therapeutic Techniques and Equipment13

Phenomena and Processes36

Disciplines and Occupations1

Technology, Industry, Agriculture1

Information Science3

Health Care1

Nanoparticles8

Dicalcium phosphate4

Composites3

Tricalcium4

20201

Scaffolds1

Synthesis1

Bone10

Carbonate6

Ions7

20191

Phosphorus9

Fluoride4

Crystals2

Precipitation4

Adsorption2

Crystalline3

Chloride2

Strontium2

Monohydrate1

Sodium2

19811

Collagen2

CaSO1

Preparation1

Anions1

Carbon2

Powder2

Enamel2

Mechanical1

Clinical3

Properties1

Bones2

Vitro2

Ratio2

Peptide1

Mineral form2

Examples1

Influences1

Serum2

Solution2

Temperature1