Calcium Phosphate Apatite
Kidney stones | Nature Reviews Disease Primers
CaP is mainly found as basic CaP (apatite), calcium hydrogen phosphate dihydrate (brushite) or tricalcium phosphate (whitlockite). Pure CaP stones are rare 62. Apatite is the most common crystal ...
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Struvite stone
Ammonia produced as a waste product by the bacteria can make the urine less acidic (or more alkaline). Struvite stones form when the urine becomes more alkaline. The main chemicals in a struvite stone include struvite (magnesium ammonium phosphate) and calcium carbon-apatite. These stones can grow quickly and become quite large.
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HOW TO READ YOUR KIDNEY STONE LAB REPORT …
70% Calcium phosphate (brushite). 20% Calcium phosphate (apatite). 10% Calcium oxalate dihydrate. I've had countless MRI, ultrasound, and X-rays, which all indicate MSK. I agree with you that I might have some …
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Crystallization of citrate-stabilized amorphous calcium phosphate …
This work explores the mechanisms underlying the crystallization of citrate-functionalized amorphous calcium phosphate (cit-ACP) in two relevant media, combining in situ and ex situ characterization techniques. Results demonstrate that citrate desorption from cit-ACP triggers the surface-mediated transformation to nanocrystalline apatite (Ap). Our findings shed light on the …
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CALCIUM PHOSPHATE STONES: Causes and Prevention
Most have hydroxyapatite (HA, like bone mineral) as their stone calcium phosphate. Some have brushite (Br, calcium monohydrogen phosphate) in their stones. ... If the average calcium phosphate content is above 50% the patient is considered a calcium …
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What is the function of hydroxyapatite in bone?
HA is a mineral form of calcium apatite that is present in human bones. It makes up somewhere between 65% and 70% of the weight of human bone. HA is also a type of calcium phosphate.
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HOW TO READ YOUR KIDNEY STONE LAB REPORT – Calcium …
70% Calcium phosphate (brushite). 20% Calcium phosphate (apatite). 10% Calcium oxalate dihydrate. I've had countless MRI, ultrasound, and X-rays, which all indicate MSK. I agree with you that I might have some sort of underlying condition. ... F Calcium Phosphate Saturation 2.20 H 0.50-2.00 01 F pH, 24 hr, Urine 5.997 5.800-6.200 01
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Calcium Phosphate Apatites: Wet Formation, Thermal …
Abstract Apatite calcium phosphates have been synthesized at pH 9–11, Ca/P = 1.50–1.67 under variable isolation conditions. A complex procedure for identification of inclusion of amorphous calcium phosphate by precipitation of hydroxyapatite under non-equilibrium conditions, including XRD/FTIR/DTA methods. The maximal stabilization of amorphous phase …
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Basics of hydroxyapatite—structure, synthesis, properties, …
Biological apatite varies in composition (it contains additional ions that play a key biological role in the development and mineralization of bone) and crystallinity. Synthetic HA can be synthesized using a range of synthesis methods that include wet-chemical and solid-state methods. ... Calcium phosphate (including HA) coatings have been ...
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The role of intracellular calcium phosphate in osteoblast
The role of intracellular calcium phosphate in osteoblast-mediated bone apatite formation Proc Natl Acad Sci U S A. 2012 Aug 28;109(35):14170-5. doi: 10.1073/pnas.1208916109. ... the precise role osteoblasts play in mediating bone apatite formation remains largely unknown. To better understand the relationship between intracellular …
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Kidney stones in adults: Evaluation of the patient with
The two forms of calcium phosphate include apatite (sometimes reported as carbonate apatite), which is the crystal type found in bone, or calcium hydrogen phosphate …
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KIDNEY STONE ANALYSIS: How Bad is It? | Kidney Stone …
Thank you so much for your quick reply. I was diagnosed with MSK back in 2017. My first stone analysis (2017) showed 50% Calcium oxalate monohydrate, 40% Calcium oxalate dihydrate, and 10% Calcium phosphate (apatite). My second analysis (2021) showed 60% Calcium oxalate monohydrate, 30% Calcium phosphate (apatite) and 10% Calcium oxalate …
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Shear-mediated crystallization from amorphous calcium phosphate …
The contribution of fluid shear stress (FSS) on the conversion of amorphous calcium phosphate (ACP) to bone apatite is investigated. The ACP precursors are prepared by using a wet-chemistry method and further exposed to the constant FSS environment with values of 0.5, 1.0, 1.5, and 2.0 Pa.At the designated time points, the apatites are characterized by …
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Kidney Stones: Treatment and Prevention
Citrate supplementation is used not only for calcium stones, but also for uric acid (urine pH target 6.0 to 7.5 or greater) and cystine stones (urine pH target of 7.0 to 7.5 or greater). 15, 31 ...
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Kidney Stones: Diagnostic and Treatment …
CALCIUM PHOSPHATE STONES. Calcium phosphate (apatite or brushite) is often a minor component of calcium oxalate stones, but sometimes comprises more than 50% of stone material. Risk factors for predominant calcium …
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Application of Calcium Phosphate Materials in Dentistry
Calcium phosphate materials are similar to bone in composition and in having bioactive and osteoconductive properties. Calcium phosphate materials in different forms, as cements, composites, and coatings, are used in many medical and dental applications. ... Functionally graded coatings consisting of fluorine-substituted apatite (FA) and beta ...
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Physico-chemical characterization of calcium-apatite …
properties of calcium phosphate produced from apatite [14, 15, 25]. This study is a contribution to the understanding of the eect of small variations in the Ca/P ratio on the granular characteristics of the dried and the calcined apatite mate-rials. To achieve this, apatite powders with dierent Ca/P
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Dissolution mechanism of calcium apatites in acids: A review …
However, when compared with the bulk of solid apatite (Ca/P = 1.67) this layer appears to be calcium-rich (Ca/P > 1.67) when the counter anions A n-(it is assumed, that apatite is dissolved in acid H n A, where A n-is an anion) adsorbed from the solution are not taken into account. If the counter anions are calculated, a numeric value for Ca/(P ...
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Calcium phosphate: What is it and what are the risks?
Calcium phosphate is a compound containing calcium and phosphorus. It is naturally present in the body, and some people may take it as a supplement to increase their calcium intake.
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Calcium phosphates for biomedical applications
Nowadays, apatite is the name for a group of minerals with the same crystallographic structure. In the case of calcium phosphates (CaP), the term "apatite" involves CaP with Ca/P ratios within 1.5–1.67. In contrast, Nicolas Louis Vauquelin (1763–1829), discovered the existence of acidic CaP.
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Transformation of amorphous calcium phosphate …
The growth of apatite crystals from amorphous calcium phosphate is an area of intense study. Here, the authors report on the use of high resolution TEM imaging to provide evidence of nucleation ...
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What causes kidney stones (and what to do)
Calcium phosphate stones are less common than calcium oxalate stones. Causes include hyperparathyroidism (when the body produces too much parathyroid hormone), renal tubular acidosis (a kidney condition that …
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Bone Tissue Regeneration by Collagen Scaffolds with Different Calcium
It is known that ACP transforms into apatite under a normal physiological environment, because body fluid (SBF as well) is supersaturated with respect to ACP, apatite, and several other calcium phosphate phases, among which apatite is the most stable and insoluble phase .
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Brushite: Key to Calcium Stone Prevention | Kidney Stone …
What Brushite Is. Put simply it is CaHPO 4.2H 2 O, a calcium phosphate crystal. It forms more readily than hydroxyapatite or calcium oxalate. In being a precursor form, brushite is similar to the 'amorphous' outer layers of bone mineral and to the first phase to deposit over plaque exposed to urine. Brushite can convert to hydroxyapatite. The work I focus on here …
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Treatment recommendations
Calcium Oxalate – New — Hereditary Calcium Oxalate Urolithiasis, Type 1 (CaOx1) University of Minnesota's College of Veterinary Medicine, Canine Genetics Lab; Urate — Genetic Hyperuricosuria testing (HUU) (SLC2A9 Gene). UC Davis Veterinary Genetics Laboratory
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The role of collagen in bone apatite formation in the …
The role of the collagen matrix 12,13,14 during the infiltration of the fibrils with amorphous calcium phosphate (ACP) and its subsequent transformation into oriented crystals of apatite is still ...
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Kidney Stone Disease: An Update on Current Concepts
Calcium phosphate (apatite), and purine crystal compositions were identified in plaques, whereas apatite is dominant . Initially, calcium phosphate crystals and organic matrix are deposited along the basement membranes of the thin loops of Henle and extend further into the interstitial space to the urothelium, constituting the so-called Randall ...
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Tribasic Calcium Phosphate | Ca5HO13P3 | CID 14781
Tribasic Calcium Phosphate | Ca5HO13P3 | CID 14781 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. ... Calcium hydroxy-apatite or calcium hydroxy-phosphate, (Ca10(OH)2(PO4)6), may be formed to small extent in ...
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Difference Between Calcium Oxalate Monohydrate and Calcium …
Calcium phosphate stones are linked to a high sodium intake and a high intake of calcium. Advertisement Calcium Oxalate Stones and Diet. If you are prone to calcium oxalate kidney stones, your doctor may suggest cutting down on oxalate …
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Hydroxyapatite benefits, dosage, and side effects
Hydroxyapatite is a calcium-phosphate mineral complex that provides bone and teeth with their structural hardness and integrity. Medically, it has been used as an implant for bone and dental surgeries, in toothpaste, and as a supplement for dental health. Hydroxyapatite can be made synthetically from chemical salts, which may have some salt ...
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