A radioimmunoassay for the binding protein for vitamin D and its metabolites (DBP) has been developed. Suitable rabbit anti-DBP antiserum was elicited after primary and one booster injection. Anti-DBP antisera, as well as antigroup-specific component antisera, produced a single, monospecific line of percipitation when reacted against purified DBP and human serum. DBP was iodinated with 125I and 125I-DBP was purified by gel filtration on Sephadex G-200. Binding of 125I-DBP by 20 nl of rabbit anti-DBP antisera was approximately 50% and was sharply competed for by 0.4-4.0 ng of DBP standard. Displacement of 125I-DBP by human serum dilutions or standard DBP gave identical curves, and only weak competition was observed with old and new world primate sera. Apo- and holo-DBP possessed indistinguishable immunoreactivity. The assay detects DBP in 1-10 nl of human serum with reasonable accuracy and with reasonable intra- and interassay precision. The mean serum concentration (+/- SEM) for a group of 40 normal adults was 525 +/- 24 mug/ml and no sex difference was observed. Higher levels were found in sera from pregnant women and women receiving oral contraceptives, and decreased concentrations were observed in premature cord and hypoproteinemic sera. No significant correlation between serum DBP levels and serum 25-hydroxycalciferol levels was found, and the DBP content of sera from vitamin D-deprived and vitamin D-treated subjects was indistinguishable from that of normal adults. DBP accounts for 6- of the alpha globulin in normal human serum. Considering the normal serum content of the parent vitamin and its metabolites to be approximately 0.1-0.2 mum, these immunoassay data confirm previous saturation analyses of human serum antiricketic sterol-binding capacity and suggest that greater than 95% of DBP circulates as the apoprotein under normal conditions.
J G Haddad Jr, J Walgate
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Assessing a method and reference material for quantification of vitamin D binding protein during pregnancy
LE Kilpatrick, AS Boggs, WC Davis, SE Long, JH Yen, KW Phinney |
2020 | |
Vitamin D Binding Protein: A Historic Overview
R Bouillon, F Schuit, L Antonio, F Rastinejad |
Frontiers in Endocrinology | 2020 |
The Origins of Salivary Vitamin A, Vitamin B12 and Vitamin D-Binding Proteins
M Blakeley, A Sobczyńska-Malefora, G Carpenter |
Nutrients | 2020 |
The Association between Maternal Serum Vitamin D Levels and Gestational Diabetes Mellitus among Filipino Patients: A Cross-Sectional Study
CC Cabrera, OA Dampil, AM Ong-Lopez |
2020 | |
Reference intervals for measured and calculated free 25-hydroxyvitamin D in normal pregnancy
O Tsuprykov, C Buse, R Skoblo, A Haq, B Hocher |
The Journal of Steroid Biochemistry and Molecular Biology | 2018 |
Bioavailable and free 25-hydroxyvitamin D and vitamin D binding protein in polycystic ovary syndrome: Relationships with obesity and insulin resistance
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The Journal of Steroid Biochemistry and Molecular Biology | 2017 |
Influence of Vitamin D Binding Protein on Accuracy of 25-Hydroxyvitamin D Measurement Using the ADVIA Centaur Vitamin D Total Assay
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International Journal of Endocrinology | 2014 |
Nutritional Management of Renal Disease
A Molfino, BR Don, GA Kaysen |
Nutritional Management of Renal Disease | 2013 |
Increased Plasma Concentrations of Vitamin D Metabolites and Vitamin D Binding Protein in Women Using Hormonal Contraceptives: A Cross-Sectional Study
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Methods in Enzymology
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Protein Engineering for Therapeutics Part B | 2012 |
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Proceedings of the Nutrition Society | 2012 |
Reproducibility of Serum 25-Hydroxyvitamin D and Vitamin D-Binding Protein Levels Over Time in a Prospective Cohort Study of Black and White Adults
JS Sonderman, HM Munro, WJ Blot, LB Signorello |
American Journal of Epidemiology | 2012 |
Vitamin D in Pregnancy and Lactation in Humans
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Annual Review of Nutrition | 2011 |
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Pediatric Nephrology | 2011 |
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Vitamins & Hormones | 2010 |
First Trimester Vitamin D, Vitamin D Binding Protein, and Subsequent Preeclampsia
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Influence of obesity on vitamin D–binding protein and 25-hydroxy vitamin D levels in African American and white women
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Measurement of vitamin D-binding protein in pleural fluids and sera by means of a turbidimetric immunoassay measuring system
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Nutrition Research | 2002 |
Mean Serum Concentration of Vitamin D-binding Protein (Gc Globulin) Is Related to the Gc Phenotype in Women
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Clinical chemistry | 2000 |
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Principles of Perinatal—Neonatal Metabolism
RM Cowett |
1998 | |
Nutritional Management of Nephrotic Syndrome
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Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation | 1992 |
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Biochemical Journal | 1991 |
Principles of Perinatal-Neonatal Metabolism
RM Cowett |
1991 | |
The rat vitamin D binding protein (Gc-globulin) gene. Structural analysis, functional and evolutionary correlations
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The Journal of biological chemistry | 1991 |
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Uptake and degradation of vitamin D binding protein and vitamin D binding protein-actin complex in vivo in the rat
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Biochemical Journal | 1990 |
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BE Nordin |
1988 | |
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Acta Medica Scandinavica | 1986 |
A radiometric immunosorbent assay for the detection of anti-hormone-binding protein antibodies
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Analytical Biochemistry | 1986 |
Photoaffinity labeling of the rat plasma vitamin D binding protein with [26,27-3H]-25-hydroxyvitamin D3-3.beta.-[N-(4-azido-2-nitrophenyl)glycinate]
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Biochemistry | 1986 |
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Electrophoresis | 1985 |
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Proceedings of the National Academy of Sciences | 1985 |
Selective, rapid removal of the vitamin D-binding protein and its sterol ligands from human and bovine plasma
JG Haddad, MA Kowalski, EE Lange |
Analytical Biochemistry | 1985 |
Accurate quantitation of native Gc in serum and estimation of endogenous Gc : G-actin complexes by rocket immunoelectrophoresis
PJ Goldschmidt-Clermont, RM Galbraith, DL Emerson, PA Werner, AE Nel, WM Lee |
Clinica Chimica Acta | 1985 |
Determination of vitamin D binding protein by Scatchard analysis and estimation of a free 25-hydroxy-vitamin D index
W Woloszczuk |
Clinica Chimica Acta | 1985 |
Free 1,25-dihydroxyvitamin D levels in serum from normal subjects, pregnant subjects, and subjects with liver disease
DD Bikle, E Gee, B Halloran, JG Haddad |
Journal of Clinical Investigation | 1984 |
The serum steroid transport proteins: Biochemistry and clinical significance
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Molecular Aspects of Medicine | 1984 |
Phosphorus administration in patients with profound hypophosphatemia
DL Andress, AJ Felsenfeld, JB Vannatta, S Dokoh, MR Haussler, F Llach |
Kidney International | 1984 |
High Resolution Isoelectric Focusing in a Narrow pH Interval for the Phenotyping of Vitamin D-Binding Protein (Gc-Globulin)
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Clinical Chemistry and Laboratory Medicine | 1984 |
Actin affinity chromatography in the purification of human, avian and other mammalian plasma proteins binding vitamin D and its metabolites (Gc globulins)
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Biochemical Journal | 1984 |
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SP Daiger, M Miller, R Chakraborty |
The American Journal of Human Genetics | 1984 |
Vitamin D nutrition in pregnant women at term and in newly born babies in Saudi Arabia
F Serenius, AT Elidrissy, P Dandona |
Journal of clinical pathology | 1984 |
The relationship of adequate and excessive intake of vitamin D to health and disease
RP Holmes, FA Kummerow |
Journal of the American College of Nutrition | 1983 |
Assay of Calcium-regulating Hormones
DD Bikle |
1983 | |
Characterization of the human plasma binding protein for vitamin D and its metabolites synthesized by the human hepatoma-derived cell line, Hep 3B
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The Journal of biological chemistry | 1983 |
Human serum binding protein for vitamin D and its metabolites (DBP): Evidence that actin is the DBP binding component in human skeletal muscle
JG Haddad |
Archives of Biochemistry and Biophysics | 1982 |
Disorders of Mineral Metabolism
RK Rude, FR Singer |
Disorders of Mineral Metabolism | 1982 |
Regulation of Phosphate and Mineral Metabolism
SG Massry, JM Letteri, E Ritz |
1982 | |
Synthesis of serum and cytosol vitamin D-binding proteins by rat liver and kidney
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The Journal of biological chemistry | 1982 |
Influence of the Vitamin D-binding Protein on the Serum Concentration of 1,25-Dihydroxyvitamin D3 SIGNIFICANCE OF THE FREE 1,25-DIHYDROXYVITAMIN D3 CONCENTRATION
R Bouillon, FA van Assche, HV Baelen, W Heyns, PD Moor |
Journal of Clinical Investigation | 1981 |
Vitamin D plasma binding protein. Turnover and fate in the rabbit
JG Haddad, DR Fraser, DE Lawson |
Journal of Clinical Investigation | 1981 |
Immunosuppression of experimental autoimmune myasthenia gravis by alpha-fetoprotein rich formation
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Immunology Letters | 1981 |
Binding of the apo and holo forms of the serum vitamin D-binding protein to human lymphocyte cytoplasm and membrane by indirect immunofluorescence
J Constans, F Oksman, M Viau |
Immunology Letters | 1981 |
Effects of protein modification procedures on interaction between 25-hydroxyvitamin D and the human plasma binding protein for vitamin D and its metabolites
M Kawakami, DW Goodman |
Biochemistry | 1981 |
Serum concentrations of vitamin D-binding protein (Group-specific component) in cystic fibrosis
D Coppenhaver, F Kueppers, D Schidlow, D Bee, JN Isenburg, DR Barnett, BH Bowman |
Human Genetics | 1981 |
Glucocorticoids and æstrogens in the management of hypercalcaemia
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Metabolic Bone Disease and Related Research | 1980 |
The effect of estradiol on a 25-hydroxycholecalciferol binding protein in the uterus of the mouse
LC Murphy, J Wild, GM Stone, S Posen |
Steroids | 1980 |
Vitamin D binding globulin levels and affinity in various clinical conditions
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Journal of clinical pathology | 1980 |
Transport of vitamin D sterols in human plasma: effect of excess vitamin D, 25 hydroxyvitamin D and 1,25 dihydroxyvitamin D
J Silver, M Fainaru |
European Journal of Clinical Investigation | 1979 |
Quantitative studies of the interaction of cholecalciferol ((vitamin D3) and its metabolites with different genetic variants of the serum binding protein for these sterols
M Kawakami, M Imawari, DS Goodman |
Biochemical Journal | 1979 |
25-Hydroxycholecalciferol receptors in human breast cancer
LC Murphy, J Wild, S Posen, G Stone |
British Journal of Cancer | 1979 |
Vitamin D metabolism in acute and chronic cholestasis
RT Jung, M Davie, P Siklos, TM Chalmers, JO Hunter, DE Lawson |
Gut | 1979 |
Vitamin D binding globulin phenotypes in liver disease
IR Brown, ND Carter, A Sood |
Clinica Chimica Acta | 1979 |
Replacement of Renal Function by Dialysis
W Drukker, FM Parsons, JF Maher |
1979 | |
Contemporary Metabolism
N Freinkel |
1979 | |
Human serum binding protein for vitamin D and its metabolites. II. Specific, high affinity association with a protein in nucleated tissue
NE Cooke, J Walgate, JG Haddad |
The Journal of biological chemistry | 1979 |
Human serum binding protein for vitamin D and its metabolites. I. Physicochemical and immunological identification in human tissues
NE Cooke, J Walgate, JG Haddad |
The Journal of biological chemistry | 1979 |
Plasma vitamin D-binding globulin in vitamin D deficiency, pregnancy and chronic liver disease
JM Barragry, D Corless, J Auton, ND Carter, RG Long, JD Maxwell, S Switala |
Clinica Chimica Acta | 1978 |
Methods of Hormone Radioimmunoassay
JA Prasad, CS Hollander |
Methods of Hormone Radioimmunoassay | 1978 |
Abnormal vitamin D metabolism in cirrhosis
RT Jung, M Davie, JO Hunter, TM Chalmers, DE Lawson |
Gut | 1978 |
25-HYDROXY-VITAMIN-D IN NEPHROTIC SYNDROME
H Schmidt-Gayk, C Grawunder, W Tschöpe, W Schmitt, E Ritz, V Pietsch, K Andrassy, R Bouillon |
The Lancet | 1977 |
VITAMIN-D METABOLISM IN NEPHROTIC SYNDROME
JM Barragry, ND Carter, M Beer, RD Cohen, MW France, JA Auton, BJ Boucher |
The Lancet | 1977 |
Basic and Clinical Concepts Related to Vitamin D Metabolism and Action
MR Haussler, TA McCain |
New England Journal of Medicine | 1977 |
Advances in Nutritional Research
HH Draper |
1977 | |
The vitamin D binding of the common and rare variants of the group-specific component (Gc): An autoradiographic study
H Cleve, W Patutschnick |
Human Genetics | 1977 |
Experimental Diabetes Reduces Circulating 1,25-Dihydroxyvitamin D in the Rat
LE Schneider, HP Schedl, T McCain, MR Haussler |
Science | 1977 |