Patients with early CKD (GFR > 30 ml/min per 1.73 m2) do not usually have changes in the serum calcium and phosphate concentration. PTH may be minimally increased and more recent publications have shown that the phosphaturic hormone, FGF-23, is clearly increased. Thus in early CKD, serum levels of phosphate and calcium are maintained within normal levels because hormonal changes compensate for ...

Mutations in the renal sodium-dependent phosphate co-transporters NPT2a and NPT2c have been reported in patients with renal stone disease and nephrocalcinosis, but the relative contribution of genotype, dietary calcium and phosphate to the formation of renal mineral deposits is unclear. We previously reported that renal calcium phosphate deposits persist and/or reappear in older Npt2a-/- mice s...

Isolated renal tubules prepared from vitamin D-deficient chicks catalyze the 1 alpha-hydroxylation of 25-hydroxyvitamin D3 (250HD3) in vitro. The effect of calcium and phosphate on the rate of synthesis of the product, 1, 25-dihydroxyvitamin D3 (1,25(OH)2D3), was studied at two levels: the long-term effects of various dietary calcium and phosphate contents on the ability of the tubules to produ...

The current dental materials were improvised to make them smarter. use of these smart such as, ceramics, composites, amorphous calcium phosphate releasing pit and fissure sealants, compomers, resin-modified glass ionomer, etc. other as impression material, orthodontic shape memory alloys, suture, burs, Has revolutionized dentistry. quest for an ideal restorative material leads the discovery a n...

A coextrusion process was used to fabricate three-directionally macrochanneled tetragonal zirconia polycrystals (TZP) with a calcium phosphate coating layer. The three-directionally connected structure was built by a unique alignment and a lamination of the TZP surrounded by calcium phosphate and carbon black filaments. After a thermal treatment (binder burnout and sintering), a 52 vol% array o...

1. The study of the effect of bile salts on enhancing calcium absorption in the rachitic chick has been extended to bile salts not present in chick bile, e.g. glycine conjugates and bile alcohol sulphates. 2. Bile and bile salts cause an increase in calcium absorption from sparingly soluble calcium hydrogen phosphate when compared with a suspension of calcium hydrogen phosphate in saline. 3. If...

CLARK, NANCY B., AND WILLIAM H. DANTZLER. Renal tubular transport of calcium and phosphate in snakes: role of parathyoid hormone. Am. J. Physiol. 223(6) : 1455-1464. 1972.-Excretion of calcium and phosphate was studied by clearance techniques in control and parathyroidectomized, unanesthetized water snakes of the genus Matrix. In intact animals, relative phosphate clearance (CPOq/CIn) averaged ...

BACKGROUND AND OBJECTIVES Little is known about the influence of dietary phosphate intake on fibroblast growth factor-23 (FGF23) and its subsequent effects on vitamin D levels. This study addresses changes in intact FGF23 (iFGF23) and C-terminal FGF23 (cFGF23), phosphaturia, and levels of vitamin D on high and low phosphate and calcium intake. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Ten...