Vitamin D: metabolism.

Vitamin D: metabolism.
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DOI:
10.1016/j.ecl.2010.02.002
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发表时间:
2010-06
影响因子:
4.5
通讯作者:
Mady, Leila J.
Mady, Leila J.
中科院分区:
医学2区
文献类型:
--
作者:
Christakos, Sylvia;Ajibade, Dare V.;Dhawan, Puneet;Fechner, Adam J.;Mady, Leila J.

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维生素D的生物活性代谢物1,25(OH)2D3影响矿物质的动态平衡,并具有许多其他不同的生理功能,包括影响癌细胞的生长和保护某些免疫疾病。本章回顾了维生素D羟基酶在提供严格调控的1,25(OH)2D3供应方面的作用。还讨论了肾外1-α(OH)酶在胎盘和巨噬细胞中的作用以及在衰老和慢性肾脏疾病中对羟基酶和维生素D羟基酶的调节。了解调节羟基酶的特定因素可能会导致设计出可以选择性调节羟基酶的药物。改变这些酶水平的能力将有治疗各种疾病的潜力,包括骨丢失障碍和某些免疫性疾病。
The biologically active metabolite of vitamin D, 1,25(OH)2D3, affects mineral homeostasis and has numerous other diverse physiological functions including effects on growth of cancer cells and protection against certain immune disorders. This chapter reviews the role of vitamin D hydroxylases in providing a tightly regulated supply of 1,25(OH)2D3. The role of extrarenal 1α(OH)ase in placenta and macrophages is also discussed as well as regulation of the hydroxylases and vitamin D hydroxylases in aging and chronic kidney disease. Understanding specific factors involved in regulating the hydroxylases may lead to the design of drugs that can selectively modulate the hydroxylases. The ability to alter levels of these enzymes would have therapeutic potential for the treatment of various diseases including bone loss disorders and certain immune diseases.
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