[Bone and joint diseases in children. Rickets].
Rickets is a disorder of growth plate chondrocytes. Its basic pathophysiology has been revealed as a defect in apoptosis of hypertrophic chondrocytes induced by low phosphate concentration in the body fluid. This review summarized recent topics in two major forms of rickets, vitamin D deficient rickets and hereditary hypophosphatemic rickets. Vitamin D deficient rickets reappeared all over the world due to environmental change. The knowledge in basic pathophysiology of the hereditary hypophosphatemic rickets is increasing rapidly after the discovery of fibroblast growth factor 23 and the responsible genes have been revealed. The finding may support to uncover the whole truth of phosphate metabolism.
Department of Pediatrics, Okayama Saiseikai General Hospital.
Hiroyuki
H
Tanaka
D000818:Animals; D002648:Child; D002675:Child, Preschool; D016326:Extracellular Matrix Proteins / Q000235:genetics; D053098:Familial Hypophosphatemic Rickets / Q000235:genetics / Q000503:physiopathology; D000089703:Fibroblast Growth Factor-23; D005346:Fibroblast Growth Factors / Q000235:genetics; D006801:Humans; D051379:Mice; D009154:Mutation; D010710:Phosphates / Q000378:metabolism; D010750:Phosphoproteins / Q000235:genetics; D012279:Rickets / Q000209:etiology; D012306:Risk; D014808:Vitamin D Deficiency / Q000150:complications*
C513309:DMP1 protein, human; D016326:Extracellular Matrix Proteins; D010710:Phosphates; D010750:Phosphoproteins; D005346:Fibroblast Growth Factors; D000089703:Fibroblast Growth Factor-23