Biological activity of lα-hydroxycholecalciferol (1). Effect on intestine and bone in rats.
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- KAWASHIMA Hiroyuki
- Teijin Institute for Bio-medical
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- HOSHINA Kenji
- Teijin Institute for Bio-medical
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- SAITOH Noriyuki
- Teijin Institute for Bio-medical
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- OKAMIYA Yoshiaki
- Teijin Institute for Bio-medical
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- HASHIMOTO Yoshinobu
- Teijin Institute for Bio-medical
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- ISHIMOTO Sachio
- Teijin Institute for Bio-medical
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- NOGUCHI Teruhisa
- Teijin Institute for Bio-medical
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- ORIMO Hajime
- Section of Endocrinology, Tokyo Metropolitan Geriatric Hospital
Bibliographic Information
- Other Title
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- 活性型ビタミンD3 I 1α‐ヒドロキシコレカルシフェロールの主作用
- カッセイガタ ビタミン D3 ニカンスルケンキュウ 1 1アルファ Hydro
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Abstract
Biological activity of 1α-hydroxycholecalciferol was studied in rats. 1α-Hydroxycholecalciferol was found to be more potent and rapidly active than vitamin D in stimulating intestinal calcium transport and calcium mobilization from bone both in normal and vitamin D deficient rats. 1α-Hydroxycholecalciferol was also active in nephrectomized and/or thyroparathyroidectomized rats both in intestine and bone. Although it is well known that 1α-hydroxycholecalciferol is metabolized to lα, 25-dihydroxycholecalciferol in the liver, there is the possibility that the former is active without further metabolism. In rats in which hepatitis was induced by CCl4, 1α-hydroxycholecalciferol was active both in the intestine and in the bone, while it was inactive in hepatectomized rats. These data clearly demonstrate that 1α-hydroxycholecalciferol is not active by itself and must be metabolized in the liver. This idea also shows the lag time in response of rats to 1α-hydroxycholecalciferol as compared with that of 1α, 25-dihydroxycholecalciferol. It was also demonstrated that 1α-hydroxycholecalciferol has more potent antirachitic activity than vitamin D and does not lose its activity with chronic oral administration. In view of these findings, 1α-hydroxycholecalciferol appears to have a good potential for clinical application in cases of renal failure and metabolic bone diseases.
Journal
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- Folia Pharmacologica Japonica
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Folia Pharmacologica Japonica 74 (2), 267-283, 1978
The Japanese Pharmacological Society
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Keywords
Details 詳細情報について
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- CRID
- 1390001204273777536
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- NII Article ID
- 30034987809
- 130000758904
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- NII Book ID
- AN00198335
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- COI
- 1:CAS:528:DyaE1cXksFehurw%3D
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- ISSN
- 13478397
- 00155691
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- NDL BIB ID
- 1935627
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- PubMed
- 658840
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed