calcium phosphate stones chemical composition

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Kidney stone analysis techniques and the role of major and
Most stones contain calcium (Ca) combined with oxalate, phosphate or occasionally uric acid in the form of calcium oxalate (CaC 2 O 4 ⋅H 2 O), calcium phosphate [Ca 10 (PO 4) 6 ⋅2H 2 O],
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Urinary stone composition analysis and clinical characterization
2021.3.19 The most common stone component was calcium oxalate (77.5%), followed by calcium phosphate (8.7%), infection stone (7.6%), uric acid (UA) stone (5.3%)and cystine
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KIDNEY STONE TYPES Kidney Stone Program - University of
2014.6.20 Calcium phosphate stone crystals form when calcium atoms combine with phosphoric instead of oxalic acid and produce the calcium phosphate kidney stone.
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The systematic classification of urinary stones combine-using
2017.5.1 The appearance of mixed stones varied with distinct components (Fig. 2 D, E, F, G, H), and 10 subtypes of mixed stones were found in this study, including calcium oxalate
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Chemical Studies of Multicomponent Kidney Stones Using
2023.8.16 Globally, approximately 80% of kidney stones are composed of calcium oxalate mixed with calcium phosphate. Stones composed of uric acid, struvite and cystine are also
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New chemolysis for urological calcium phosphate calculi – a
2005.5.22 The study has shown that solutions S1 and S2 can dissolve calcium phosphate stones effectively in vitro at a precise dilution of their chemical components. Based on these
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Calcium Stone: Pathophysiology, Prevention, and Medical Management
2019.7.13 Calcium Phosphate Stone. Calcium phosphate stones can be divided into calcium phosphate (apatite) and calcium hydrogen phosphate dihydrate (brushite) . Calcium
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Stone Composition and Morphology: A Window on Etiology
2012.10.11 The commonest crystalline phases identified in calcium phosphate stones are carbapatite (often as the main component), amorphous carbonated calcium phosphate,
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Current insights into the mechanisms and management of infection stones
2018.11.23 Approximately 80% of calcium stones contain calcium oxalate as the predominant component 17, which is commonly admixed with calcium phosphate. Stones
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Calcium Phosphate (Ca3(PO4)2) - Structure, Side Effects,
Calcium Phosphate (Ca3(PO4)2) - Calcium phosphate has a molecular formula Ca3(PO4)2. ... Inhaling it may cause chemical pneumonitis. Calcium phosphate is used in many products in biomedicine, but also in dentistry and cosmetics. In certain situations, it is found in nanoparticle form, either on purpose or after degradation or mechanical ...
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Urinary Infection and Struvite Stones - SpringerLink
2010.1.1 Infection stones are composed primarily of magnesium ammonium phosphate hexahydrate (MgNH 4 PO 4 • 6H 2 O) but may, in addition, contain calcium phosphate in the form of carbonate apatite (Ca 10 [PO 4] 6 • CO 3).26 Urease is not constitutively produced or present in sterile human urine, therefore, infection with urease-producing bacteria is a requirement for
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Types of Kidney Stones: Chart, Comparison, and
2022.10.13 Kidney stones are solid deposits of minerals that can form in the kidneys, also known as renal calculi. They can be made up of various types of crystals, with the most abundant crystal determining ...
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The key role of major and trace elements in the formation of
2024.5.30 In addition to identifying the chemical composition and elements in urinary stones and their potential roles in aggregate formation, assessing the correlations between different elements becomes essential to understand the process of stone formation in the urinary tract [].To investigate the associations between the major and trace elements in urinary
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CALCIUM PHOSPHATE STONES: Causes and Prevention
2016.7.28 If the average calcium phosphate content is above 50% the patient is considered a calcium phosphate stone former. The average must be computed using 0 – for example, given CaOx/CaP percentages of 100/0, 0/100, 40/60, the correct classification is 140/3 vs 160/3 or 46% CaOx vs 53%, and so a CaP stone former.
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Efficacy of Hounsfield Unit of CT in Prediction of the Chemical ...
2021.10.1 Analysis of the stone composition passed spontaneously revealed that calcium oxalate stone, mixed calcium oxalate-calcium phosphate stone, uric acid stone and cystine stone were easy to pass ...
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Chemical Studies of Multicomponent Kidney Stones Using
2023.8.16 Defining the kidney stone composition is important for determining a treatment plan, understanding etiology and preventing recurrence of nephrolithiasis, which is considered as a common, civilization disease and a serious worldwide medical problem. The aim of this study was to investigate the morphology and chemical composition of multicomponent kidney
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Human kidney stones: a natural record of universal
2021.5.24 GeoBioMed — a new transdisciplinary approach that integrates the fields of geology, biology and medicine — reveals that kidney stones composed of calcium-rich minerals precipitate from a ...
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DETERMINATION OF URINARY STONES CHEMICAL COMPOSITION
2021.1.1 There are many types of renal stones depending on stone chemical components those including calcium oxalate stone, calcium phosphate, struvite stone, uric acid stone and cystine stone.
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What causes kidney stones (and what to do) - Harvard Health
2019.5.17 Calcium oxalate and calcium phosphate stones. Calcium stones are the most common type of kidney stones, and can be either calcium oxalate or calcium phosphate. As mentioned, good hydration is important to prevent calcium stones. It may be surprising, but results of a randomized clinical trial show that people with calcium kidney stones should ...
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Current insights into the mechanisms and management of infection stones
2018.11.23 Lithogenesis of calcium phosphate stones is dependent on the urinary pH 23,24 and calcium concentration 25; ... of stones, including chemical composition (organic and inorganic) and microstructure ...
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The systematic classification of urinary stones combine-using
2017.5.1 Calcium phosphate stones were mostly grayish-white or lotus root color with a brittle texture ... With systematic classification, the chemical composition, appearance, profile structure, microstructure, elemental composition and distribution of urinary stones were all achieved simultaneously. Based on this, we got some interesting findings: the ...
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Analysis of stones formed in the human gall bladder and
Classification of kidney stones based on their chemical composition. ii). Uric acid stones: Uric acid stones are a crystallized mixture of uric acid and magnesium ammonium phosphate (struvite). These kinds of stones have been experimentally found to be radiolucent (Singh and Rai 2014). These types of kidney stones are very common in patients ...
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Calcium Stone: Pathophysiology, Prevention, and Medical Management
2019.7.13 Calcium phosphate stones can be divided into calcium phosphate (apatite) and calcium hydrogen phosphate dihydrate (brushite) . ... Identification of the stone composition traditionally was made with a chemical method, but newer techniques such as infrared spectroscopy and X-ray diffraction have superseded the old method for better precision. ...
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Compositional and Morphological Studies of Kidney and
2022.10.6 The chemical and isotopic composition of calcium oxalate monohydrate kidney stones was studied by Athanasiadou et al. using gamma-ray spectroscopy, and the authors reported for the first time the existence of radioactive isotopes and traces of uranium (U) in the examined stone samples. They employed isotope ratio mass spectroscopy (IRMS) to ...
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5 Structure and Compositional Analysis of Kidney Stones
2017.8.23 Table 1 The Chemical Name, Composition, Mineral Name, and Abbreviation of the Most Common Components of Human Urinary Tract Calculi Chemical formula Abbreviation ... stones. The calcium phosphate salts vary in calcium-to-phosphate ratio, hydroxyl-vs-hydrogen ion content, and the degree of water of crystallization included in the crystal- ...
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Chemical Characterization of Gallstones: An Approach to
2015.4.8 Introduction Records on gallstones and associated ailments in Sri Lankan community are scarce, despite frequent detection of gallstone disease. Identification of the chemical composition of gallstones in the local setting is important in defining aetiopathogenic factors which in turn are useful in implementing therapeutic and preventive strategies. This
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Interpreting the results of chemical stone analysis in the era
Micro CT characterization of a typical specimen of mixed mineral in this study. A: Photo of stone fragments on mm-grid paper.B: Micro CT image slice through two of the fragments. X-ray attenuation values indicated that these stone fragments contained a core of urate or uric acid (dark gray, determined by infrared spectroscopy to be urate), surrounded by a shell composed
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Calcium Phosphates: Structure, Composition, Solubility, and
An overview of physicochemical properties of calcium phosphates is presented in this chapter with the compound of greatest interest and importance, hydroxyapatite (OHAp), discussed in more detail. Calcium phosphates are important materials in the fields of biology, geology, industry, medicine, and dentistry. Their formation, functions, and applications depend on their structure,
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CHEMICAL COMPOSITION AND MORPHOLOGY OF
2021.3.10 The stone chemical composition in South Poland indicate that calcium oxalate monohydrate was overwhelmingly dominant (84%) followed by hydroxyapatite (8%) and struvite (6%). The occurren- ... with calcium phosphate, (2) pure calcium phosphate stones, (3) uric acid stones, (4) struvite stones which are the result of chronic urinary tract ...
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