An emerging view of vitamin D.

An emerging view of vitamin D.
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维生素 D 的新观点。

DOI:
10.1080/00365519009085809
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发表时间:
1990
期刊:
Scandinavian journal of clinical and laboratory investigation. Supplementum
影响因子:
--
通讯作者:
J. Dabek
J. Dabek
中科院分区:
--
文献类型:
--
作者:
J. Dabek

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维生素D3 (D2为22-烯,24-甲基D3)是一种前激素,在肝实质和肾近端小管细胞中,通过混合功能单加氧酶nadph -细胞色素P-450铁氧还蛋白/铁氧还蛋白还原酶系统将其羟基化为25-羟基,然后是活性激素1,25-二羟基维生素D。1,25-二羟基维生素D与靶细胞中的主要核内受体结合[典型地,骨、肾和肠;现在显示其范围更广,包括甲状旁腺细胞、内分泌细胞和许多外表皮细胞(脑、皮肤)和中表皮细胞(造血细胞、淋巴结细胞)以及肿瘤细胞(乳腺、淋巴瘤、白血病)],并激活钙结合蛋白、自身受体蛋白、24-羟化酶和非特异性酯酶等产物的转录,这些产物在钙稳态和细胞分化中很活跃。测量维生素D内分泌系统成分的先进方法已经开发出来,包括柱萃取、液相色谱纯化(也称为HPLC)、蛋白质和受体结合测定以及质谱测定。这些有助于阐明维生素D生理学(也在妊娠和哺乳期)和代谢缺陷的经典,维生素D抗性和肾佝偻病和骨软化,在结节病和维生素可能参与细胞分化,如髓性白血病和乳腺癌。
Vitamin D3 (D2 is 22-ene,24-methyl D3) is a prehormone which is hydroxylated by mixed function mono-oxygenase NADPH-cytochrome P-450 ferredoxin/ferredoxin reductase systems in liver parenchyma and renal proximal tubular cells to 25-hydroxy, then 1,25-dihydroxyvitamin D, the active hormone. 1,25-dihydroxyvitamin D binds to a mainly intranuclear receptor in target cells [classically, bone, kidney and gut; now shown to be wider including parathyroid cells, endocrine cells generally and many cells of ectodermal (brain, skin) and mesodermal (blood forming cells, lymphnode cells) origin as well as tumour cells (breast, lymphoma, leukaemia)] and activates transcription for products such as calcium binding proteins, its own receptor protein, 24-hydroxylase and non-specific esterase which are active in calcium homeostasis and cell differentiation. Advanced methods for measuring components of the vitamin D endocrine system have been developed and involve column extractions, liquid chromatographic purifications (also HPLC) and protein and receptor binding assays as well as mass spectrometry. These have facilitated elucidation of vitamin D physiology (also in pregnancy and lactation) and of metabolic defects in classical, vitamin D resistant and renal rickets and osteomalacia, in sarcoidosis and in the possible involvement of the vitamin in cell differentiation, e.g. in myeloid leukaemia, and breast cancer.
DOI: 10.1016/0022-4731(84)90063-3
发表时间: 1984-01-01
影响因子: 4.1
作者:
HOLLIS, BW
通讯作者: HOLLIS, BW
用于维生素 D 及其代谢物的 Silica Sep-Pak 制备色谱。
DOI: 10.1016/s0378-4347(00)84221-8
发表时间: 1981
期刊: Journal of chromatography
影响因子: --
作者:
Adams,JS;Clemens,TL;Holick,MF
通讯作者: Holick,MF
1,25-二羟基维生素 D3 及其氟化类似物诱导人类正常和白血病骨髓干细胞的巨噬细胞分化。
DOI: --
发表时间: 1984
期刊: Cancer research
影响因子: 11.2
作者:
Koeffler,HP;Amatruda,T;Ikekawa,N;Kobayashi,Y;DeLuca,HF
通讯作者: DeLuca,HF
1,25(OH)2D3 抑制前甲状旁腺激素基因的转录。
DOI: 10.1210/endo-119-6-2864
发表时间: 1986
期刊: Endocrinology
影响因子: 4.8
作者:
Russell,J;Lettieri,D;Sherwood,LM
通讯作者: Sherwood,LM
循环 1,25-二羟基维生素 D 的测定涉及新型单筒提取和纯化程序。
DOI: --
发表时间: 1986
期刊: Clinical chemistry
影响因子: 9.3
作者:
Hollis,BW
通讯作者: Hollis,BW