Calcium-permeable ion channels in the kidney
Calcium ions (Ca 2+) are crucial for a variety of cellular functions.The extracellular and intracellular Ca 2+ concentrations are thus tightly regulated to maintain Ca 2+ homeostasis. The kidney, one of the major organs of the excretory system, regulates Ca 2+ homeostasis by filtration and reabsorption. Approximately 60% of the Ca 2+ in plasma …Web
اقرأ أكثرRemineralization of teeth with casein phosphopeptide-amorphous calcium
Introduction. Dental caries is one of the most common multifactorial diseases that occurs in children, due to imbalance between protective and pathological factors [1, 2] causing loss of calcium and phosphate ions as well as demineralization.However, this process can be reversed by the so-called remineralization process [].Saliva, fluoride …Web
اقرأ أكثرHypophosphatemia: What It Is, Causes, Symptoms & Treatment
Calcium and phosphate react in opposite ways: As blood calcium levels increase, phosphate levels decrease. A hormone called parathyroid hormone (PTH), which your parathyroid glands release, controls the levels of calcium and phosphate in your blood. Most people have four pea-sized parathyroid glands located behind their thyroid gland — …Web
اقرأ أكثرCalcium and Phosphate Disorders: Core Curriculum 2024
Maintaining normal calcium and phosphate homeostasis is essential for optimal cellular, metabolic, and organ function. Parathyroid hormone, fibroblast growth …Web
اقرأ أكثرKidney stones
If a kidney stone becomes lodged in the ureters, it may block the flow of urine and cause the kidney to swell and the ureter to spasm, which can be very painful. At that point, you may experience these symptoms: ... Calcium stones may also occur in the form of calcium phosphate. This type of stone is more common in metabolic conditions, such …Web
اقرأ أكثرHyperphosphatemia and Cardiovascular Disease
Metabolic Regulation of Phosphate. The organs involved in phosphate regulation include intestine, bone, kidney, and parathyroid gland. The daily intake of dietary phosphate is about 1.0–1.5 g, which is absorbed by the intestinal epithelial cell type II sodium-dependent phosphate co-transporter (Npt)-2a, 2b, and 2c (Masuda et al., …Web
اقرأ أكثرCarbon Nanotubes Functionalized with Calcium Carbonate for Flow …
Phosphorus discharged from sewage effluent and agricultural run-off has been identified to be the major cause of eutrophication. One feasible way to deal with the phosphate-containing wastewater is to realize electrochemically induced phosphate precipitation with coexisting calcium ions. Herein, an electrochemical carbon nanotube …Web
اقرأ أكثرHypophosphatemia
Hypophosphatemia is defined as an adult serum phosphate level of fewer than 2.5 milligrams per deciliter (mg/dL). The normal level of serum phosphate in children is considerably higher and 7 mg/dL for …Web
اقرأ أكثرCalcium Phosphates | SpringerLink
Multivitamin complexes with calcium orthophosphate are widely available in the market, and β-TCP is used as the calcium phosphate there. In addition, β-TCP …Web
اقرأ أكثرA carbonate-rich lake solution to the phosphate problem of the …
Here we show that carbonate-rich lakes can concentrate phosphate to >1 molal levels by locking up calcium in carbonate minerals, which prevents phosphate removal by apatite precipitation. Phosphate-rich lakes may have preferentially formed on the prebiotic Earth because of carbonic acid weathering under CO 2 -rich atmospheres …Web
اقرأ أكثرCalcium and Phosphate Disorders: Core Curriculum 2024
Maintaining normal calcium and phosphate homeostasis is essential for optimal cellular, metabolic, and organ function. Parathyroid hormone, fibroblast growth factor 23, and 1,25-dihydroxyvitamin D regulate calcium and phosphate homeostasis via multiple interlinked feedback loops, receptors, ion channels, and transporters. Following an initial …Web
اقرأ أكثرImpacts of Initial Ca/P on Amorphous Calcium Phosphate
Amorphous calcium phosphate (ACP) is a metastable phase in the crystallization pathway of calcium phosphates. Understanding its chemical and structural properties could provide critical insights into biomineralization mechanisms. Of particular interest is the impact of the initial Ca/P on the structure of ACP. Further, the influence of Ca/P on the size, precipitate …Web
اقرأ أكثرControlled self-assembly of chemical gardens enables
Interaction between phosphate solution and H 2 O. To explore the systematic exchange of phosphate solution with H 2 O as a means to influence calcium phosphate chemical garden growth, we ...Web
اقرأ أكثر20.5: The Phosphorus Cycle
Figure 20.5.1 20.5. 1: Phosphorus cycle: In nature, phosphorus exists as the phosphate ion (PO 43− ). Weathering of rocks and volcanic activity releases phosphate into the soil, water, and air, where it becomes available to terrestrial food webs. Phosphate enters the oceans via surface runoff, groundwater flow, and river flow.Web
اقرأ أكثرEvaluation of salivary calcium, phosphorus and alkaline …
No significant differences were found between the mean salivary concentrations of calcium, phosphorous, and ALP before and after phase I periodontal therapy. Other studies conducted on this topic have reported controversial results. Vivek et al 24 evaluated the relationship between salivary levels of calcium and chronic …Web
اقرأ أكثرAn investigation into the flowability of fine powders used in
This paper investigates into the flow properties of two popular pharmaceutical excipients (Calcium sulphate and Dicalcium phosphate) and their respective feeder hopper design requirements. There are numerous problems related to poor powder flowability that are faced by pharmaceutical industries, due to a lack of fundamental understanding of …Web
اقرأ أكثرVitamin D and Calcium | Johns Hopkins Medicine
Blood vessel flow (calcium) Without enough vitamin D or calcium, your parathyroid glands compensate by producing too much of their hormone, a condition called hyperparathyroidism. That can lead to bone weakening ( osteoporosis) and increased fracture risk. Other problems from calcium and vitamin D deficiencies include:Web
اقرأ أكثرDiscovery of endoplasmic reticulum calcium stabilizers to rescue
Podocytes were stained with the fluorescent cytosolic calcium indicator Fluo-4 AM (acetoxymethyl), and the fluorescence intensity was measured by flow cytometry. As shown in Fig. 3D, cytoplasmic calcium levels were higher in Tg-C321R podocytes relative to control podocytes. Collectively, these results indicate that the calpain 2-caspase 12 ...Web
اقرأ أكثرFrontiers | The role of extracellular vesicles in vascular
For kidney stones, crystal deposition in the renal papilla is thought to begin with stromal vesicles, and under conditions of mineral imbalance, calcium and phosphate flow through their appropriate channels into EVs, leading to initial mineral accumulation in the form of amorphous calcium phosphate, forming hydroxyapatite crystals; At the …Web
اقرأ أكثرFrontiers | Hyperphosphatemia and Cardiovascular …
Hyperphosphatemia or even serum phosphate levels within the "normal laboratory range" are highly associated with increased cardiovascular disease risk and mortality in the general population and …Web
اقرأ أكثرFabrication of Calcium Phosphate Coatings by the Inflight
Hydroxyapatite (Ca 10 (PO 4) 6 (OH) 2) (HA) is a phase of calcium phosphate, and belongs to a family of materials called the calcium apatites (Ref 1, 2).Calcium phosphate materials differ in their ratio of calcium to phosphorous, where stochiometric HA has a calcium to phosphorous ratio of 1.67 (Ref 3, 4).The names, …Web
اقرأ أكثرRemineralization of teeth with casein phosphopeptide-amorphous calcium
To investigate the changes of salivary flow rate and salivary pH of Syrian children with mixed dentition following application of Casein Phosphopeptide-Amorphous Calcium Phosphate (CPP-ACP). This ...Web
اقرأ أكثرCalcium Silicate-Based Root Canal Sealers: A Narrative Review …
Over the last two decades, calcium silicate-based materials have grown in popularity. As root canal sealers, these formulations have been extensively investigated and compared with conventional sealers, such as zinc oxide–eugenol and epoxy resin-based sealers, in in vitro studies that showed their promising properties, especially their …Web
اقرأ أكثرCalcium and Phosphate Homeostasis
In this chapter, we review calcium and phosphate homeostasis including the critical organs involved (skeleton, …Web
اقرأ أكثرEMCOMPRESS®
Description. Dibasic Calcium Phosphates Dihydrate & Anhydrous, Tribasic Calcium Phosphate. EMCOMPRESS ® Calcium Phosphates are water-insoluble functional fillers for wet granulation and direct compression applications. EMCOMPRESS ® offers improved flow for all powder mixtures, including poorly flowing APIs and plant extracts. …Web
اقرأ أكثرIntroducing the crystalline phase of dicalcium phosphate
Calcium orthophosphates (CaPs) are important in geology, biomineralization, animal metabolism and biomedicine, and constitute a structurally and …Web
اقرأ أكثرPhosphorus and Phosphates | SpringerLink
Calcium phosphates for use in animal and poultry feeds are made from both furnace and wet process phosphoric acids. Dicalcium phosphate, CaHPO 4, containing 18.5 percent P, and mono calcium phosphate, Ca(H 2 PO 4) 2 ·H 2 O, containing 21.0 percent P, are made in large tonnages. Both grades are prepared by reacting phosphoric acid …Web
اقرأ أكثرMechanisms for the removal of calcium phosphate deposits in turbulent flow
@article{osti_20062641, title = {Mechanisms for the removal of calcium phosphate deposits in turbulent flow}, author = {Littlejohn, F and Grant, C S and Saez, A E}, abstractNote = {This work investigates the mechanisms for the removal of calcium phosphate deposits from stainless steel tubing in turbulent flows. Two types of deposits …Web
اقرأ أكثرCalcium Phosphate in Pharmaceutical Product Development
Calcium phosphate is a widely used pharmaceutical excipient as binder and filler in solid oral dosage forms which include compressed tablets and hard gelatin capsules. ... The present chapter focuses on the physical and chemical properties of these calcium phosphates, flow property measurements, compressional behavior and the forces …Web
اقرأ أكثرCalcium and Phosphate Regulation – Human Physiology
The regulation of calcium and phosphate results from the interactions of three hormones: parathyroid hormone, calcitonin, and vitamin D. This section will examine the roles of …Web
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