A Competitive Protein-Binding Assay for 25-Hydroxycholecalciferol

1975 ◽  
Vol 17 (2) ◽  
pp. 57-57
Author(s):  
Yoshiki Seino ◽  
Tsunesuke Shimotsuji ◽  
Shintaro Okada ◽  
Teisuke Hiejima ◽  
Chiiko Ikehara ◽  
...  
1974 ◽  
Vol 46 (2) ◽  
pp. 231-240 ◽  
Author(s):  
S. Edelstein ◽  
M. Charman ◽  
D. E. M. Lawson ◽  
E. Kodicek

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 ± SD 14 pmol/ml (15–2 ± 5–6 ng/ml). 3. Levels of 25-hydroxycholecalciferol in plasma of four male volunteers maintained for 2 months on a diet supplemented with 26·1 nmol (10 μg) of cholecalciferol a day were found to be significantly higher. 4. High correlation was established between plasma 25-hydroxycholecalciferol values obtained by the competitive protein-binding assay and values obtained by bioassay.


1976 ◽  
Vol 68 (2) ◽  
pp. 99-105 ◽  
Author(s):  
B. Garcia-Pascual ◽  
A. Peytremann ◽  
B. Courvoisier ◽  
D.E.M. Lawson

1974 ◽  
Vol 9 (2) ◽  
pp. 167-176 ◽  
Author(s):  
Arpad G. Fazekas ◽  
Carlos E. Menendez ◽  
Richard S. Rivlin

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