Specific 1,25-Hydroxycholecalciferol Receptors and Stimulation of 25-Hydroxycholecalciferol- 24R Hydroxylase in Human Amniotic Cells
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چکیده
منابع مشابه
25-hydroxycholecalciferol stimulation of muscle metabolism.
Intact diaphragms from vitamin D-deficient rats were incubated in vitro with [3H]leucine. Oral administration of 10 mug (400 U) of cholecalciferol 7 h before incubation increased leucine incorporation into diaphragm muscle protein by 136% (P less than 0.001) of the preparation from untreated animals. Nephrectomy did not obliterate this response. ATP content of the diaphragm muscle was also enha...
متن کاملReduction of Saliva and Serum 25-Hydroxycholecalciferol in Multiple Sclerosis
Methods: The prevalence of multiple sclerosis (MS) is high in patients suffering from 25-hydroxyvitamin D3 [25(OH)D] deficiency. The aim of this study was to investigate the possible association of saliva and serum 25(OH)D concentrations with MS in women.Methods: Serum and saliva 25(OH)D levels of 30 MS women and 30 matched healthy controls in this case-control study were measured by ELIS...
متن کاملCompetitive protein-binding assay for 25-hydroxycholecalciferol.
1. A competitive protein-binding assay for plasma 25-hydroxycholecalciferol was developed, using Sephadex LH-20 columns for the isolation of the sterol and a partially purified protein from rat serum as the binding protein. 2. The mean plasma 25-hydroxycholecalciferol in eighteen male and female normal volunteers was 38 5 SD 14 pmol/ml (1 5.2 & 5.6 nglml). 3. Levels of 25-hydroxycholecalciferol...
متن کاملPurification and Characterization of the Ferredoxin Component of 25-Hydroxycholecalciferol la-Hydroxylase
The chick kidney mitochondrial iron-sulphur protein (ferredoxin), a component of the NADPH-cytochrome P-450 reductase functional in the 1 a-hydroxylation of 25-hydroxycholecalciferol, was purified to homogeneity by chromatography on DEAE-cellulose, gel filtration on Sephadex G-100 and preparative electrophoresis on polyacrylamide gel. A novel NADPH-cytochrome c reductase assay utilizing crude r...
متن کامل23, 25, 26-trihydroxycholecalciferol. A 25-hydroxycholecalciferol-26,23-lactone precursor.
(23S)-23,25-Dihydroxycholecalciferol was converted into at least five metabolites in kidney homogenates prepared from 1,25-dihydroxycholecalciferol-treated chickens. One of these has been positively identified as 23,25,26-trihydroxycholecalciferol by u.v.-absorbance analysis, mass spectrometry and chemical formation of derivatives. 23,25,26-Trihydroxycholecaciferol produces 25-hydroxycholecalci...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1987
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-198705000-00002