Oxalobacter sp. promotion of enteric oxalate excretion, correlating with reductions in urinary oxalate excretion, was previously reported in rats and mice, but the mechanistic basis for this affect has not been described. The main objective of the present study was to determine whether the apical oxalate transport proteins, PAT1 (slc26a6) and DRA (slc26a3), are involved in

NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Extension of Expiration Date for NIDDK Program Announcement, PA-09-213: Calcium Oxalate Stone Diseases (R01) NOT-DK-12-011. NIDDK

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Endogenous oxalate is primarily derived from the metabolism of glycine and ascorbic acid [1]. Calcium oxalate crystal related renal injury in the past was mostly due to JIB, which was a surgical weight-loss procedure performed for the relief of morbid obesity during the 1950s through the 1970s. However, there remained too many complications, including mineral and electrolyte imbalance, protein calorie malnutrition, enteric complications, and renal disease (hyperoxaluria, with oxalate stones or interstitial oxalate deposits). The multiple complications which were associated with JIB, led to a search for alternative procedures. In 1979 [2], one type of modern bariatric surgery was gastric bypass. Full procedure gastric bypass included RYGB surgery, biliopancreatic diversion with duodenal switch, vertical banded gastroplasty, and laparoscopic adjustable gastric banding. A study by Asplin et al. revealed a mean oxalate excretion of 83 mg/day in patients who underwent RYGB [3]. This was significantly ...

Oxalate nephropathy is a rare disorder that can result in acute kidney injury (AKI) and progresses to end-stage kidney disease (ESKD). The causes can be either primary or secondary. Primary hyperoxaluria includes a group of hereditary disorders with enzymatic defects in the glyoxylate pathway, resulting in decreased oxalate metabolism. Secondary hyperoxaluria, often overlooked can result from increased intestinal absorption, nutritional deficiencies, decreased fluid intake, impaired excretion, and increased dietary consumption of oxalate. We present a Caucasian case of acute oxalate induced nephropathy associated with consumption of large quantities of green vegetables in a patient with chronic kidney disease (CKD). Imaging study showed no evidence of kidney stone, but a kidney biopsy revealed acute tubular injury, tubular atrophy, interstitial fibrosis, and dense tubular deposition of calcium oxalate crystals. Upon further questioning the patient, we learned that in the months prior to presentation, he

[Ca+2] The aqueous solution is slightly basic, due to the basicity of the oxalate ion. Molar mass of CaC2O4 = 128.097 g/mol. Later studies found, however, that calcium binds oxalate and thus actually reduces the risk of calcium oxalate stones when given with meals. If youve had one of these, watch out for high-oxalate foods. The rarer dihydrate (mineral: weddellite) and trihydrate (mineral: caoxite) are also recognized. 2008 Feb;36(1):17-24. doi: 10.1007/s00240-007-0122-4. Foods high in calcium and low in oxalate … A build up of crystals â ¦ Most of these materials are dissolved in water molecules present in urine. [2] The calcium oxalate accumulation is linked to the detoxification of calcium (Ca2+) in the plant.[3]. CdC2O4 or C2H2CdO4. No predicted properties have been calculated for this compound. Its worth noting that healthy dogs typically have a urine pH of around 6.5. (H2O)x, where x varies from 0 to 3. As a common byproduct of human digestion and elimination, it is usually harmless. The

TY - JOUR. T1 - Models for protein binding to calcium oxalate surfaces. AU - Gul, Asiya. AU - Rez, Peter. PY - 2007/4. Y1 - 2007/4. N2 - It is widely believed that proteins rich in Asp, Glu or Gla (γ carboxyglutamic acid) interact strongly with calcium oxalate surfaces and inhibit calcium oxalate crystal growth. An alternative hypothesis would be that the interaction of Asp, Glu and Gla residues with surfaces could facilitate nucleation and crystal aggregation. Prothrombin fragment 1 and bikunin have been studied extensively as inhibitors, β-microglobulin, transferrin and antitrypsin have been found in stone matrix and tubulin has been observed in the attachment of crystals to cell surfaces. The aim of this study is to examine how well carboxylate groups in proteins found either in stone matrix, or proposed as inhibitors, could fit with the calcium ion sub-lattice of both calcium oxalate monohydrate and dihydrate surfaces. The carboxylate groups in the acidic Asp, Glu and Gla residues were ...

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Microcalcifications can be the early and only presenting sign of breast cancer. One shared characteristic of breast cancer is the appearance of mammographic mammary microcalcifications that can routinely be used to detect breast cancer in its initial stages, which is of key importance due to the possibility that early detection allows the application of more conservative therapies for a better patient outcome. The mechanism by which mammary microcalcifications are formed is still largely unknown but breast cancers presenting microcalcifications are more often associated with a poorer prognosis. We combined Capillary Electrochromatography, histology, and gene expression (qRT-PCR) to analyze patient-matched normal breast tissue vs. breast tumor. Potential carcinogenicity of oxalate was tested by its inoculation into mice. All data were subjected to statistical analysis. To study the biological significance of oxalates within the breast tumor microenvironment, we measured oxalate concentration in both

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Clinical Evidence that Turmeric Could Cause Hyperoxaluria. The roots can also be better preserved than the … If you require any medical related advice, contact your physician promptly. Fresh Turmeric Paste. Foods. A higher quantity of Curcumin and Bioperine means you need to take the low quantity of turmeric in one day. Along with being delicious, turmeric is also incredibly healthy. Turmeric has blood thinning activity. While Im happy to report that it would be quite difficult to get too much turmeric in regular food doses, there are upper limits when it comes to supplements. There was a significantly higher computed 6-h oxalate absorption rate from turmeric ingestion (8.2%) than from cinnamon ingestion (2.6%), which was most likely explained by the 91% soluble oxalate content of turmeric compared with 6% for cinnamon. Personalized answers. 90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. of the ground spice), which it ...

Cashews have a fairly high oxalate content, and eating foods with a lot of oxalates can cause kidney stones. So its important to keep an eye on how many cashews youre eating. More than an ounce a day may be too much. Eating them with milk may help, since calcium can help reduce oxalate absorption. If you have kidney stones or are at risk for kidney-related conditions, you should talk to your doctor about how much is safe to eat.. ...

Calcium: In the past, doctors have recommended a low-calcium diet for those stone formers with high levels of calcium in their urine. The paradox here is that although reducing calcium in the diet does reduce levels of calcium in the urine, it also increases levels of oxalates in the urine. This is thought to be due to the fact that calcium inhibits the absorption of oxalate in the intestines. As mentioned above, hyperoxaluria (excessive urinary oxalate excretion) appears to play a more crucial role in the formation of stones than hypercalciuria (excessive urinary calcium excretion). This means that consumption of a low-calcium diet may actually raise your risk of forming stones, rather than decrease it as previously thought. Therefore, some experts advise eating a high-calcium (or at least normal-calcium) diet, rather than a low-calcium diet as many conventional doctors still suggest. With regards to calcium supplementation, studies have shown that taking calcium supplements between meals may ...

ATR-FTIR measurements in combination with quantum chemical calculations were performed to study chemical reactions taking place at the surface of a thin TiO2 layer immersed in an aqueous oxalic acid solution under UV(A) illumination. It was found that the adsorption of oxalic acid on TiO2 in the dark can be explained in terms of two surface complexes for the anatase phase. Under UV(A) illumination, one of the adsorbed species on the anatase phase preferably undergoes photo-degradation and at the same time more molecules of oxalic acid are adsorbed at the TiO2 surface which is thus enriched in the second complexation mode. The spectral changes observed under UV(A) illumination are explained in the light of different theories: photo-desorption of water molecules as a thermal mechanism induced by the absorption of photons, surface reconstruction, and newly exposed surface area provided by the de-aggregation of the TiO2 particles. ...

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TY - JOUR. T1 - Synergism and substitution in the lactoferrins. AU - Brodie, A. M.. AU - Ainscough, E. W.. AU - Baker, E. N.. AU - Baker, H. M.. AU - Shongwe, M. S.. AU - Smith, C. A.. PY - 1994. Y1 - 1994. N2 - The anion binding properties of human lactoferrin (Lf), with Fe3+ or Cu2+ as the associated metal ion, highlight differences between the two sites, and in the anion binding behaviour when different metals are bound. Carbonate, oxalate and hybrid carbonate-oxalate complexes have been prepared and their characteristic electronic and EPR spectra recorded. Oxalate can displace carbonate from either one or both anion sites of Cu2(CO3)2Lf, depending on the oxalate concentration, but no such displacement occurs for Fe2(CO3)2Lf although it does for the bovine analogue. Addition of oxalate and the appropriate metal ion to apoLf under carbonate-free conditions gives dioxalate complexes with both Fe3+ and Cu2+. The anion sites as determined from the crystal structures of Fe2(CO3)2Lf, Fe2(C2O4)2Lf, ...

TThe present invention relates to a process of production of ammonium niobium oxalate, to the ammonium niobium oxalate produced by said process that presents high purity, monoclinic crystal structure, Nb content in the range from 10 to 30% by weight, which is stable in contact with air at room temperature, and does not show polymerization by aging, is soluble in water, with a solubility in the range from 60 to 160 grams of niobium per liter of water, at temperatures from 20 to 80°C, and to the use of the same as a niobium precursor, suited to the synthesis of functionalized materials such as ceramic, optical lenses, catalysts, high purity niobium oxides, thin films and crystals, in a macrometric to nanometric range, by preparation methods such as sol-gel, precipitation, deposition, impregnation and decomposition, wherein the niobium is the main constituent or is added to the composition as promoter or dopant.

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Question - Blood and urine test showed calcium oxalate crystals in it. Meaning? . Ask a Doctor about diagnosis, treatment and medication for Prostate cancer, Ask a Radiologist

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Hi, today i tried synthesis of oxalyl chloride by chlorination of ethylene glycol. I have read an article about that and says that yield is nearly 100% if used solvent. They used o-dichlorobenzene. I have chosen tetrachloroethylene as it dissolves chlorine well and boils at 120C. So i attempted synthesis with my fresh obtained TCE. At the beginning everything was ok mixture turned green because of dissolved chlorine and heated. But as it was going it became cloudy and eventually it formed big crystal that blocked my magnetic stirrer. I found that it was hexachloroethane as it smelled the same and it was only option. So my question is how it was chlorinated to HCE if doug was attempting this with catalyst and under reflux and it almost didnt work and every patent says that it requires very strong light and other shit like that. I can also say that this was performed outside under daylight. Can anybody explain this and help what to do with this solvent? ...

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The nucleation and the crystal growth rates of mixed nickel manganese oxalates have been determined from the changes of the ionic concentration of the solution and the crystal size distribution during the precipitation process within a supersaturation range 0-0.1 M. Thermodynamic solubility calculations have been used to identify the different species contributing the precipitation reaction and for estimation of the thermodynamic constant. Experimental data show that the nucleation rate of mixed nickel manganese oxalate in this supersaturation range is consistent with a primary heterogeneous mechanism and was found to obey to an exponential law. The crystal growth rates indicate a surface-integration-controlled mechanism with a first-order law with respect to the supersaturation. ...

Emergency Department Care: Remove any plant material from the oral cavity. If airway compromise is ruled out, patient may be allowed to drink cold liquids, eat crushed ice, or frozen desserts for relief. Oral swishing of diphenhydramine elixir may provide anesthetic and antihistamine effects. Laryngeal edema should be treated with antihistamines. No data supports the use of steroids for laryngeal edema caused by oxalate-containing plants.. Note: Anthurium andraeanums air-filtering property seems to be negated by the risk of calcium oxalate exposure.. Availability ...

Oxalate and glyoxylate supported growth and acetate synthesis by Moorella thermoacetica in the presence of nitrate under basal (without yeast extract) culture conditions. In oxalate cultures, acetate formation occurred concomitant to growth, and nitrate was reduced in the stationary phase. Growth in the presence of [14C]bicarbonate or [14C]oxalate showed that CO2 reduction to acetate and biomass or oxalate oxidation to CO2 was not affected by nitrate. However, cells engaged in oxalate-dependent acetogenesis in the presence of nitrate lacked a membranous b-type cytochrome which was present in cells grown in the absence of nitrate. In glyoxylate cultures, growth was coupled to nitrate reduction, and acetate was formed in the stationary phase after nitrate was totally consumed. In the absence of nitrate, glyoxylate cells incorporated less CO2 into biomass than oxalate cells. CO2 conversion to biomass by glyoxylate cells decreased when cells were grown in the presence of nitrate. These results ...

Single crystals of anhydrous strontium oxalate have been prepared by hydrothermal synthesis in the presence of divalent transition metal ions. Strontium is eight coordinate with approximate square antiprismatic geometry. The SrO polyhedra form a 3-dimensional network by sharing edges and vertices. This structure is compared to that of the strontium oxalate hydrates and related calcium minerals weddelite Ca(C2O4)(H2O)2 and whewellite Ca(C2O4)(H2O). ...

TABLE-US-00001 TABLE 1 ##STR00074## Co. No Ex. No. R1 R2 X RB Physical data 1 B15 H H CH2 F RS-enantiomeric mixture 144 B11.a H CH3 CH2 F RS-enantiomeric mixture 2 B11.a H CH3 CH2 F RS-enantiomeric mixture; •oxalate 3 B1.a H CH3 CH2 F R, •HCl; m.p. 244.9° C.; αD +75.55° (Na), c 0.54 4 B1.a H CH3 CH2 F S, •HCl; m.p. 249.2° C.; αD -75.92° (Na), c 0.54 139 B1.b H CH3 CH2 F R 5 B1.3 H CH3 CH2 Br RS-enantiomeric mixture 6 B16 H CH3 CH2 nBu RS-enantiomeric mixture 7 B1.b H CH3 ##STR00075## H 2RS, 8RS 8 B1.b H CH3 ##STR00076## F 2RS, 8RS 9 B1.b H CH3 ##STR00077## H 2SR, 8SR; •HCl 10 B1.b H CH3 ##STR00078## H 2SR, 8RS; •HCl 11 B1.b H CH3 ##STR00079## H RS-enantiomeric mixture; •oxalate 12 B2.c H CH3 O F RS-enantiomeric mixture; •oxalate 13 B2.a H CH3 S F R*, •oxalate; m.p. 234.4° C.; αD free base +48.1° (Na), c 0.43 14 B2a H CH3 S F S*, •oxalate; m.p. 231.5° C.; αD free base -50.0° (Na), c 0.33 30 B2a H CH2CH3 CH2 F RS-enantiomeric mixture; •oxalate 15 B2a H CH2CH3 CH2 F ...

Oxalic acid (IUPAC name: ethanedioic acid, also known as anhydrous oxalic acid) is a dicarboxylic acid with structure (HOOC)-(COOH). It is one of the strongest organic acids. Oxalic acid was first discovered in 1769 by the German pharmacist Johann Christian Wiegleb in the plant Oxalis (Oxalis acetosella, from which the name ? ?oxalic acid? ? is derived). In 1776, Oxalic acid was prepared synthetically for the first time by Scheele. It is found naturally in varying ...

The kidney stone diet is one thing: High calcium, low sodium, low refined sugar, normal protein, flexible oxalate management that depends on how high urine oxalate is once high diet calcium is achieved, and of course high fluids.. This site is rich in articles that pertain to the kidney stone diet - it was built in part for this purpose. The home page lists articles by topic and you can find there the ones you need. Here is a brief summary with links.. High calcium and low sodium: 1,000 to 1,200 mg calcium 65 - 100 mEq (1,500 to 2,300 mg) sodium and care about oxalate (50 to 200 mg/day) can be achieved using our list of foods that meet all three requirements. It is essential that calcium be taken in with the meals that contain appreciable oxalate.. Low refined sugar (below 10% of daily carbohydrate intake): This is best thought of as a major reduction in sweets - cookies, candy, sugared drinks, cake, pie. Fruits are not a problem, but smoothies that break up the fruit may liberate their sugars ...

Water and fluid intake is low, fruits are seldom eaten, food has high oxalate level or if calcium content of the diet is on the lower side.. Other diseases with high risk for stone formation are overweight, gout, diabetes, recurrent urinary tract infection etc. Bariatric surgery is a very significant risk factor.. If kidneys have certain diseases like the inability to excrete acid, a stone formation may occur.. Symptoms: Stones if they are in the urinary path (ureters or urethra) pain colicky in nature often radiating from back to lower abdomen or upto urine passage opening (urethra) may occur. This pain is at times very severe necessitating urgent consultation.. Urine may be passed in drops and is often red in colour due to blood.. If the passage of urine is blocked due to stone at any site, high pressure develops upstream of the blockage. If not treated early this may permanently damage the kidney.. In India, an untreated stone disease is a common cause of permanent renal failure.. Stone ...

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In the context of research on U/minor actinides for nuclear fuel reprocessing in the transmutation process, developments are first studied with surrogates containing uranium and lanthanides to facilitate testing. The tests consist of precipitating and calcining a hydrazinium uranium/cerium oxalate. The structure of this oxalate had not been previously determined, but was necessary to validate the physicochemical mechanisms involved. The present study, firstly demonstrates the structural similarity of the U/Ce oxalate phase (N{sub 2}H{sub 5},H){sub 2.9}U{sub 1.1}Ce{sub 0.9}(C{sub 2}O{sub 4}){sub 5}·10H{sub 2}O, synthesized using a vortex precipitator for continuous synthesis of actinide oxalates, with previously known oxalates, crystallizing in P6{sub 3}/mmc symmetry, obtained by more classical methods. This fast precipitation process induces massive nucleation of fine powders. Their structural and microstructural determination confirms that the raw and dried phases belong to the same structural ...

Small stones may move through the ureter and be passed out naturally with adequate fluid intake. Stone analysis in Ms. If you have had a kidney stone that contains oxalate, research suggests that limiting high oxalate foods may help reduce your chance of forming another kidney stones not passing urine stone. I was diagnosed nearly 10 years ago with vulvodynia I also have had a kidney stone, twice.

Kombucha is created by using tea (usually black or green), sugar, and a live starter known as a SCOBY. Each one of these ingredients can cause problems for someone dealing with any sort of digestive issues, for the following reasons:. • Black tea is very high in oxalates, which is a naturally occurring plant poison that looks like tiny shards of glass under a microscope. This is to deter insects from eating the plant, and is not harmful to humans IF the proper intestinal microbiota are in place. However, if a person has ever used antibiotics, experienced chronic stress, or had a diet high in sugar and fat, the delicate bacteria that is the primary consumer of oxalates is wiped out, which leave the intestinal system incapable of handling them safely and effectively. Anyone with a systemic Candida infection, leaky gut, kidney stones, fibromyalgia, COPD, asthma, cystic fribrosis, Hashimotos disease, or hypothyroidism should avoid high oxalates foods or beverages.. • Even though a lot of the ...

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A.S. Kravtsova, V.M. Tomashyk, Z.F. Tomashyk, I.B. Stratiychuk, A.O. Kuryk, S.M. Kalytchuk, S.M. Galkin Pecularities of ZnSe dissolution in H2O2-HBr-ethylene glycol (oxalic acid) etchant compositons // Functional Materials, V. 20, № 3, Р.321-328. (2013). ...

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l-Serine and dl-serine have been treated with oxalic acid under different experimental conditions, e.g. crystallization from solution and slurry, kneading and dry mixing, yielding the molecular salts [l-serH]2[ox]·2H2O forms I and II, [l-serH][Hox] and [dl-serH]2[ox]·2H2O, all fully characterized by

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oxalic acid forms fine colourless crystals , readily soluble in water, with light nitrogen oxides-like odour. - Manufacturer - Producer - PSL131024YH

Oxalate is a chemical compound that occurs naturally in almost every plant to some degree, including fruit, vegetable and grain plants. Oxalate is usually...

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