Vitamin D and bone.

Vitamin D and bone.
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DOI:
10.1007/s11914-012-0098-z
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发表时间:
2012-06
影响因子:
4.3
通讯作者:
Bikle, Daniel D.
Bikle, Daniel D.
中科院分区:
医学2区
文献类型:
--
作者:
Bikle, Daniel D.

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所有构成软骨细胞的细胞-软骨细胞、成骨细胞和破骨细胞-都含有维生素D受体和产生维生素D活性代谢物1,25二羟维生素D所需的酶CYP 27 B1。25羟维生素D和1,25二羟维生素D对这些骨细胞的直接作用已得到证实。然而,维生素D缺乏或维生素D受体和CYP 27 B1突变的主要骨骼表现,即佝偻病和骨软化症,可以通过增加钙和磷酸盐的肠道吸收来纠正,表明间接作用的重要性。另一方面,这些饮食控制不能逆转导致骨质减少的成骨细胞或破骨细胞功能缺陷。这篇综述讨论了维生素D对骨的直接与间接作用的相对重要性,并为临床使用维生素D预防/治疗骨丢失和骨折提供了指南。
All cells comprising the skeleton—chondrocytes, osteoblasts, and osteoclasts—contain both the vitamin D receptor and the enzyme CYP27B1 required for producing the active metabolite of vitamin D, 1,25 dihydroxyvitamin D. Direct effects of 25 hydroxyvitamin D and 1,25 dihydroxyvitamin D on these bone cells have been demonstrated. However, the major skeletal manifestations of vitamin D deficiency or mutations in the vitamin D receptor and CYP27B1, namely rickets and osteomalacia, can be corrected by increasing the intestinal absorption of calcium and phosphate, indicating the importance of indirect effects. On the other hand, these dietary manipulations do not reverse defects in osteoblast or osteoclast function that lead to osteopenic bone. This review discusses the relative importance of the direct versus indirect actions of vitamin D on bone, and provides guidelines for the clinical use of vitamin D to prevent/treat bone loss and fractures.
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