Urinary stone composition analysis and clinical ... - Nature
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
Charlar en LíneaKidney Stone Disease: An Update on Current Concepts - PMC
2018.2.4 The mechanism of stone formation is a complex process which results from several physicochemical events including supersaturation, nucleation, growth,
Charlar en LíneaKidney Stones Johns Hopkins Medicine
For some people, calcium phosphate stones form as a result of a medical condition known as renal tubular acidosis. Struvite stones : Some patients form stones that are composed of a mixture of magnesium,
Charlar en LíneaStone Composition and Morphology: A Window on Etiology
2012.10.11 Phosphate stones have diverse crystalline composition and morphology, which reflect distinct etiopathogenic conditions. The commonest crystalline
Charlar en LíneaAggregation of Calcium Phosphate and Oxalate Phases in the
2014.11.12 Calcium phosphate (CaP) and calcium oxalate (CaOx) are the two most common crystalline constituents of human urinary stones. Calcium phosphate is
Charlar en LíneaCurrent insights into the mechanisms and management of
2018.11.23 Struvite stones (also known as triple phosphate stones) are composed of magnesium, ammonium, and phosphate with the chemical formula MgNH 4 PO 4
Charlar en LíneaCalcium Phosphate Mineral - an overview ScienceDirect Topics
The subjects that will be presented in this chapter are: (1) The nature of the mineral phase in bone; that is, the chemical composition and crystal structure of the solid calcium
Charlar en LíneaCalcium Phosphate Ca3(PO4)2 CID 24456 - PubChem
The phosphate ions in calcium phosphate likely react with hydrochloric acid in the stomach to neutralize the pH. In toothpaste and in systemic circulation, calcium phosphate provides a source of calcium and
Charlar en LíneaAnalysis of stones formed in the human gall bladder and kidney
2020.5.14 Urinary stones exhibit varying chemical compositions and are quite specific to individual ... Fe, S, Zr, Mo, Cu, Co, and F ranging from 1.56 to 4.63% in calcium oxalate and calcium phosphate type urinary stones of Jordanian patients. A good correlation was found between elemental concentrations and such factors as water intake ...
Charlar en LíneaUrinary stone composition analysis and clinical characterization of ...
2021.3.19 It is worth noting that all struvite stones are mixed stones. We detected calcium oxalate in 1352 (88.9%) stones, and calcium oxalate accounted for more than 50% of the stone composition in 1178 (77.5%) stones. Similarly, calcium phosphate was found in 525 (34.5%) stones, and 132 (8.7%) stones contained more than 50% calcium
Charlar en LíneaWhat causes kidney stones (and what to do) - Harvard Health
2019.5.17 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 not cut back on dietary calcium.
Charlar en LíneaThe Management of Urolithiasis - U.S. Pharmacist
2020.9.16 The size, shape, and chemical composition of stones are varied. Kidney stones are typically classified into the following five types according to differences in mineral composition and pathogenesis 1,2,4: CaOx: Calcium stones, which account for roughly 80% of all urinary stones, consist of pure CaOx (50%), calcium phosphate (5%), or a ...
Charlar en LíneaNew chemolysis for urological calcium phosphate calculi – a
2005.5.22 The chemical composition of these stones was varied but there was a predominance of calcium phosphate in almost all the stones and calcium oxalate was less than 10% (Table 1, Table 2). Table 1 Chemical analysis of
Charlar en LíneaBiochemical composition of salivary stones in relation to stone
2018.9.28 The components in these salivary stones, identified by wet chemical analysis, are presented in Table 1. Most of the stones contained phosphate (88.4%), calcium (87.0%) and magnesium (68.1%). Carbonate and oxalate were present in approximately one third of the stones. Ammonium, cystine and urate were rarely
Charlar en LíneaAggregation of Calcium Phosphate and Oxalate Phases in the
2014.11.12 The majority of human kidney stones are comprised of multiple calcium oxalate monohydrate (COM) crystals encasing a calcium phosphate nucleus. The physiochemical mechanism of nephrolithiasis has not been well determined on the molecular level; this is crucial to the control and prevention of renal stone formation. This work
Charlar en LíneaKidney Stone Disease: An Update on Current Concepts - PMC
2018.2.4 The chemical composition of kidney stones depends on the abnormalities in urine composition of various chemicals. Stones differ in size, ... , whereas calcium phosphate stones occur when pH is greater than 7.5 . The recurrence of calcium stone is greater than other types of kidney stones.
Charlar en LíneaAnalysis of stones formed in the human gall bladder and
2020.5.14 Urinary stones exhibit varying chemical compositions and are quite specific to individual ... Fe, S, Zr, Mo, Cu, Co, and F ranging from 1.56 to 4.63% in calcium oxalate and calcium phosphate type urinary stones of Jordanian patients. A good correlation was found between elemental concentrations and such factors as water intake ...
Charlar en LíneaVascular Calcification and Stone Disease: A New Look towards the ...
2015.6.25 1. Introduction. Calcium ions (Ca 2+) are an abundant mineral inside the human body, stored as calcium phosphate (CaP) in the skeleton, where it serves to maintain healthy bones and teeth.Little amounts of calcium are also dissolved as ionized Ca 2+ in the intra- and extracellular fluid of every cell, which is essential for the normal
Charlar en LíneaMineralogical, compositional and isotope characterization of
2019.1.22 The second most common type of stones is composed of a mixture of calcium oxalate monohydrate/calcium oxalate dehydrate (weddellite) and calcium hydroxyl phosphate (HAP) (apatite) minerals. The phosphate ion (PO 4 3− ) gives stretching and bending vibrations in the mid IR region between 900–1200 cm −1 and 300–600 cm −1 ,
Charlar en LíneaTypes of Kidney Stones: Chart, Comparison, and Treatment
2022.10.13 There are four types of kidney stones: calcium stones. uric acid stones. struvite stones (triple phosphate, or magnesium ammonium phosphate) cystine stones. Calcium stones are the most common type ...
Charlar en LíneaCALCIUM PHOSPHATE STONES: Causes and Prevention
2016.7.28 Phosphate stones, HA or Br, can grow faster and larger than calcium oxalate ones. Calcium phosphate crystals invade kidney tissue – so called tubule plugs. Tissue damage is common, as is Nephrocalcinosis from plugging – often misdiagnosed as medullary sponge kidney. Kidney tissue damage is worse with Br than HA stones.
Charlar en LíneaThe Pulp Stones: Morphological Analysis in Scanning Electron
2021.12.21 The adherent nodules are in intimacy with dentine walls, whilst embedded nodules are incorporated into dentinal mass during dentinogenesis. The chemical composition of these mineralizations is scarce in the literature. Some describe a predominance of calcium and phosphate in a similar proportion to hydroxyl apatite.
Charlar en LíneaSpectrum of urinary stone composition in Northwestern
Calcium oxalate as predominant chemical composition was present in 91.54% of the stones, followed by uric acid in 4.28%, struvite in 2.29%, calcium phosphate in 1.49%, and cystine in 0.4%. Renal, ureteric, and urinary bladder stones were predominantly calcium oxalate-containing stones in 96.1%, 94.1%, and 62.3%, respectively.
Charlar en LíneaOn the rocks: can urologists identify stone composition based on ...
2023.1.6 Purpose As part of the management of nephrolithiasis, determination of chemical composition of stones is important. Our objective in this study is to assess urologists’ accuracy in making visual, intraoperative determinations of stone composition. Materials and methods We conducted a REDCap survey asking urologists to predict
Charlar en LíneaKidney stones: composition, frequency and relation to metabolic
When calcium stones are considered our findings are lower than the 93.8% found by Jing et al. in 625 stones analyzed using Fourier transform infrared spectroscopy (FTIR) 10, and also lower than the 90% composition of calcium salts, also analyzed with physicochemical method, reported by Massari et al. in Córdoba city, Argentina 11.
Charlar en LíneaKidney stone analysis techniques and the role of major and trace ...
2014.7.31 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], calcium carbonate (CaCO 3), brushite (CaHPO 4 ⋅2H 2 O), gypsum (CaSO 4 ⋅2H 2 O) and/or dolomite [CaMg (CO 3) 2] (Barbas et al. 2002;
Charlar en LíneaThe systematic classification of urinary stones combine-using FTIR
2017.5.1 In most cases, whewellite stones displayed earthy yellow or brown color with extremely hard texture, and circular layer can be found in the profile sometimes (Fig. 1 A and B).Unlike this, weddellite stones always showed an ivory appearance with hard texture but without layer (Fig. 1 C and D).Calcium phosphate stones were mostly
Charlar en Línea