期刊
CALCIFIED TISSUE INTERNATIONAL
卷 108, 期 1, 页码 32-40出版社
SPRINGER
DOI: 10.1007/s00223-020-00729-9
关键词
Biomineralization; Hypophosphatemia; Hyperphosphatemia; Vascular calcification; Soft tissue calcification; Calciphylaxis; Enthesopathy; Heterotopic ossification
资金
- National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health [AR062103]
Inorganic phosphate is essential for cells, genetic pathways, energy metabolism, and bone health. Proper levels of calcium and phosphate are crucial for biomineralization and maintenance of skeletal mass and strength. Different mineralized tissues have unique abilities to mineralize, with varying degrees and processes of mineralization suited for specific functions.
Inorganic phosphate is a vital constituent of cells and cell membranes, body fluids, and hard tissues. It is a major intracellular divalent anion, participates in many genetic, energy and intermediary metabolic pathways, and is important for bone health. Although we usually think of phosphate mostly in terms of its level in the serum, it is needed for many biological and structural functions of the body. Availability of adequate calcium and inorganic phosphate in the right proportions at the right place is essential for proper acquisition, biomineralization, and maintenance of mass and strength of the skeleton. The three specialized mineralized tissues, bones, teeth, and ossicles, differ from all other tissues in the human body because of their unique ability to mineralize, and the degree and process of mineralization in these tissues also differ to suit the specific functions: locomotion, chewing, and hearing, respectively. Biomineralization is a dynamic, complex, and lifelong process by which precipitations of inorganic calcium and inorganic phosphate divalent ions form biological hard tissues. Understanding the biomineralization process is important for the management of diseases caused by both defective and abnormal mineralization.Hypophosphatemiaresults in mineralization defects and osteomalacia, andhyperphosphatemiais implicated in abnormal excess calcification and/or ossification, but the exact mechanisms underlying these processes are not fully understood. In this review, we summarize available evidence on the role of phosphate in biomineralization. Other manuscripts in this issue of the journal deal with other relevant aspects of phosphate homeostasis, phosphate signaling and sensing, and disorders resulting from hypo- and hyperphosphatemic states.
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