カルシトリオール 化学特征,用处語,生産方式
外観
红色～ほとんど红色、結晶性粉末～粉末
消融性
アセトニトリル溶状：試験適合
用处
ビタミン D3 の生体内代謝物
である活性型ビタミン D3 です。カルシウム
代謝調節感化を示します。マウス及びヒトの
骨髄性白血病細胞（M1 及び HL-60）に対し、
増殖を按捺し、単球 - マクロファージへの分
化を誘導します。免疫調節感化を示します。
用处
ビタミンD3 の生体内代謝物
である活性型ビタミンD3 です。カルシウム
代謝調節感化を示します。マウス及びヒトの
骨髄性白血病細胞（M1 及びHL-60）に対し、
増殖を按捺し、単球- マクロファージへの分
化を誘導します。免疫調節感化を示します。
用处
カルシトリオール（Calcitriol）は、1,25-ジヒドロキシコレカルシフェロール（1,25-dihydroxycholecalciferol）または1,25-ジヒドロキシビタミンD3（1,25-dihydroxyvitamin D3）とも呼ばれており、3つのアルコール基を持つホルモン活性を有する形の（1,25-(OH)2D3 または単に1,25(OH)2Dとも略称されている）ビタミンDである。
この物質は次の方式により血中のカルシウム（Ca2+）濃度を高める。
(1) 腸からカルシウムの吸収を高め血中濃度を高める。
(2) 腎臓の働きによりカルシウムの血中から尿への移動を按捺する。
(3) 骨から血中へカルシウムの放出を高める。
効能
骨粗鬆症治療薬, ビタミンD受容体作動薬
商品名
カルデミン (龍角散); ロカルトロール (中外製薬); ロカルトロール (中外製薬); ロカルトロール (協和発酵キリン)
説明
Calcitriol is the active form of vitamin D and is also a kind of hormones in the body. It plays an important role in the regulation of calcium and phosphorus concentration. It can increase the blood calcium level by increasing the intestinal absorption of calcium and can also increase the release of the bone calcium release for increasing the blood calcium levels. This study was first conducted and reported by Michael F. Holick in 1971. The basic principle of action model of calcitriol in many cases is through binding with the vitamin D receptor (the VDR), e.g., the ligand-receptor complex forming between calcitriol and its receptor in the intestinal epithelial cells cytoplasm can be transferred to the nucleus for being as the transcriptional factor in promoting the expression of calcium-binding protein. The increased level of calcium-binding proteins can help the cell to actively transport of more calcium ions, thereby increasing the calcium absorption level. Calcium absorption while maintaining electrical neutrality also requires transporting anions, mainly the absorption of inorganic phosphate ions, so calcitriol also promote the absorption of phosphorus.
Clinically, this drug can be used in the treatment of hypocalcemia, hypoparathyroidism (adult), osteomalacia, rickets (infants), chronic kidney disease, renal osteodystrophy, osteoporosis, as well as the prevention of glucocorticoid induced osteoporosis.
Calcitriol-dimensional molecular structure
The above information is edited by the chemicalbook of Dai Xiongfeng.
化学的特征
White Crystalline Powder
利用
Calcitriol (1α,25-dihydroxy Vitamin D3) is synthesized from 7-dehydrocholesterol in humans via a non-enzymatic photochemical reaction with 290-310 nm UV light in the skin. Hydroxylation of the resulting cholecalciferol in the liver produces 25-hydroxy Vitamin D3, the principal circulating form of Vitamin D. A second, tightly regulated hydroxylation in the kidney produces calcitriol. Plasma calcitriol levels range from 10-70 pg/ml and are influenced by numerous dietary and hormonal factors. The main physiologic effects of calcitriol are to increase the absorption of calcium at the level of the intestinal epithelium, and to increase the mineralization of bone via the direct stimulation of osteoblasts.[Cayman Chemical]
定義
ChEBI: A hydroxycalciol that is calcidiol in which the pro-S hydrogen of calcidiol is replaced by a hydroxy group. It is the active form of vitamin D3, produced fom calciol via hydoxylation in the li
er to form calcidiol, which is subsequently oxidised in the kidney to give calcitriol.
普通的な説明
1α,25-Dihydroxyvitamin D
3, also referred as calcitriol, is a calcitrophic hormone. It is the most biologically active metabolite of vitamin D produced in proximal tubular cells in the kidney.
生物活性
Active metabolite of vitamin D 3 that activates the vitamin D receptor (VDR). Displays calcemic actions; stimulates intestinal and renal Ca 2+ absorption and regulates bone Ca 2+ turnover. Exhibits antitumor activity; inhibits in vivo and in vitro cell proliferation in a wide range of cells including breast, prostate, colon, skin and brain carcinomas and myeloid leukemia cells.
カルシトリオール 下贱と下贱の製品情報
原资料
準備製品