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甲状旁腺素 (ＰＴＨ)含有 84个氨基酸多肽 ,是钙代谢的主要调节剂。ＰＴＨ对骨的主要作用是由激素的氨基端产生的。ＰＴＨ通过增加胃肠道对钙吸收和肾脏对钙的重吸收 ,通过促进骨吸收过程动员血钙入血 ,使血钙浓度升高。ＰＴＨ激活 2 5(ＯＨ)Ｄ3羟化酶使 2 5 (ＯＨ)Ｄ3转化为有
Parathyroid hormone (PTH) contains 84 amino acid polypeptide, is the main regulator of calcium metabolism. The main effect of PTH on bone is produced by the amino terminus of the hormone. PTH by increasing the gastrointestinal absorption of calcium and renal reabsorption of calcium through the promotion of bone resorption mobilization of blood calcium into the blood, so that blood calcium levels. PTH activates 25 (OH) D3 hydroxylase to convert 25 (OH) D3 to