title: [Calcium and vitamin D metabolism in the kidney-parathyroid system].
abstract: Calcium level is maintained by parathyroid hormone, 1alpha, 25 (OH)(2)D(3) and calcitonin in cooperation with bone, kidney and intestine. In the kidney activation of vitamin D and transcellular calcium transport in distal tubule regulate calcium concentlation. In the parathyroid glands calcium-sensing receptor sense extracellular calcium and secretes parathyroid hormone. It is received negative feedback from 1alpha, 25 (OH)(2)D(3) and phosphate.
authors.affiliation: Division of Nephrology & Dialysis Center, Kobe University School of Medicine.
authors.forename: Shohei
authors.initials: S
authors.lastname: Nakanishi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Toki
authors.forename: Masafumi
authors.initials: M
authors.lastname: Fukagawa