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Phosphate ion regulation
- Molecular classification
- Other
01
Overview
"Phosphate ion regulation" refers to the complex physiological process that maintains phosphate (inorganic phosphorus, Pi) balance in the body. This process integrates intestinal absorption, renal handling, bone storage, and bone resorption, and is controlled primarily by the coordinated action of hormones such as parathyroid hormone (PTH), fibroblast growth factor 23 (FGF23), and vitamin D (calcitriol), along with proteins like α-klotho and sodium-phosphate cotransporters (NaPi-IIa, NaPi-IIb)[3][4]. Disturbances in this regulatory system lead to clinical complications such as bone disease, cardiovascular pathology, and metabolic dysfunction.
- Other names
- Phosphate homeostasisPhosphorus balancePhosphate metabolism regulation
02
Biological functions
Mineral homeostasisAcid-base balancingBone mineralizationCellular energy metabolism
03
Disease associations
Renal disease (especially chronic kidney disease and secondary hyperparathyroidism)Bone disorders (rickets, osteomalacia)Cardiovascular disease (vascular calcification)Metabolic syndrome
04
Safety considerations
Risk of hypophosphatemia or hyperphosphatemiaSoft tissue and vascular calcification with chronic imbalanceOsteomalacia or secondary hyperparathyroidism
05
Biomarkers
Serum phosphateParathyroid hormone (PTH)Fibroblast growth factor 23 (FGF23)Calcitriol (1,25-dihydroxyvitamin D)Urinary phosphate
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