Summary
To test the importance of 24-hydroxylation of vitamin D3 on bone mineralization, rat pups born to vitamin D-deficient females were given either 25-hydroxyvitamin D3 or 24,24-difluoro-25-hydroxyvitamin D3 for 16 days beginning at the time of weaning. Following such treatment analysis of blood samples revealed no detectable 24R,25-(OH)2D3 and 1,25-(OH)2D3 in the rats given the difluoro compound while revealing the expected 24,24-difluoro-25-hydroxyvitamin D3 and 24,24-difluoro-1,25-dihydroxyvitamin D3. The rats given 25-hydroxyvitamin D3 had the expected levels of 25-hydroxyvitamin D3, 24,25-dihydroxyvitamin D3, and 1,25-dihydroxyvitamin D3. Following sacrifice at day 17, postweaning bone mineralization and modeling were studied in long bones using histological methods. Bones taken from vitamin D-deficient rats at the beginning and end of the experimental period had lesions typical of rickets. These included wide growth plates, excessive amounts of osteoid, and metaphyseal fibrosis. Following treatment with either 25-hydroxyvitamin D3 or 24,24-difluoro-25-hydroxyvitamin D3, bone mineralization returned to normal. Growth plate widths and the amount of osteoid on bone surfaces were both substantially reduced and to a similar degree in both treatment groups. Normal cartilage core formation and trabecularization of the metaphyseal primary spongiosa were also restored to a similar degree in both groups. In effect, no difference was observed in any bone parameter studied between the 25-hydroxyvitamin D3- and the 24,24-difluoro-25-hydroxyvitamin D3-treated animals. These results provide strong evidence that 24-hydroxylation of the vitamin D molecule plays little or no role in the modeling and mineralization of bone.
Similar content being viewed by others
References
DeLuca, H. F.: Vitamin D endocrine system. In O. Bodanski, A. L. Latner (eds.): Advances in Clinical Chemistry, pp. 125–174. Academic Press, London, 1977
DeLuca, H. F.: Vitamin D. In H. F. DeLuca (ed.): Handbook of Lipid Research, pp. 69–132. Plenum Press, New York, 1978
Drezner, M. K., Harrelson, J. M.: Newer knowledge of vitamin D and its metabolites in health and disease, Clin. Orthop. Rel. Res.139:206–231, 1979
Holick, M. F., Baxter, L. A., Schraufrogel, P. K., Tavela, T. E., DeLuca, H. F.: Metabolism and biological activity of 24,25-dihydroxyvitamin D3 in the chick, J. Biol. Chem.251:397–402, 1976
Boyle, I. T., Gray, R. W., DeLuca, H. F.: Regulation by calcium of in vivo synthesis of 1,25-dihydroxycholecalciferol and 21,25-dihydroxycholecalciferol, Proc. Natl. Acad. Sci. U.S.A.68:2131–2134, 1971
Garabedian, M., Holick, M. F., DeLuca, H. F., Boyle, I. T.: Control of 25-hydroxycholecalciferol metabolism by parathyroid glands, Proc. Natl. Acad. Sci. U.S.A.69:1673–1676, 1972
Fraser, D. M., Kodicek, E.: Regulation of 25-hydroxycholecalciferol-1-hydroxylase activity in kidney by parathyroid hormone, Nature [New Biol.]241:163–166, 1973
Henry, H., Midgett, R., Norman, A.: Regulation of 25-hydroxyvitamin D3-1-hydroxylase in vivo, J. Biol. Chem.249:7584–7592, 1974
Halloran, B. P., Barthell, E., DeLuca, H. F.: Vitamin D metabolism during pregnancy and lactation in the rat, Proc. Natl. Acad. Sci. U.S.A.76:5549–5553, 1979
Frolik, C. A., DeLuca, H. F.: 1,25-Dihydroxycholecalciferol: The metabolite of vitamin D responsible for increased intestinal calcium transport, Arch. Biochem. Biophys.147:143–147, 1971
Boyle, I. T., Miravet, L., Gray, R. W., Holick, M. F., DeLuca, H. F.: The response of intestinal calcium transport to 25-hydroxy and 1,25-dihydroxyvitamin D in nephrectomized rats, Endocrinology90:605–608, 1972
Tanaka, Y., DeLuca, H. F.: Bone mineral mobilization activity of 1,25-dihydroxycholecalciferol, a metabolite of vitamin D, Arch. Biochem. Biophys.146:574–578, 1971
Holick, M. F., Garabedian, M., DeLuca, H. F.: 1,25-Dihydroxycholecalciferol: a potent stimulator of bone resorption in tissue culture, Science176:1146–1148, 1972
Raisz, L. G., Trummel, C. L., Holick, H. F., DeLuca, H. F.: 1,25-Dihydroxycholecalciferol: a potent stimulator of bone resorption in tissue culture, Science175:768–769, 1972
Tanaka, Y., DeLuca, H. F., Ikekawa, N., Morisaki, M., Koizumi, N.: Determination of stereochemical configuration of the 24-hydroxy group of 24,25-dihydroxyvitamin D3 and its biological importance, Arch. Biochem. Biophys.170:620–626, 1975
Boris, A., Hurley, J. F., Trmal, T.: Relative activities of some metabolites and analogs of cholecalciferol in stimulation of tibia ash weight in chicks otherwise deprived of vitamin D, J. Nutr.107:194–198, 1977
Boyle, I. T., Omdahl, J. L., Gray, R. W., DeLuca, H. F.: The biological activity and metabolism of 24,25-dihydroxyvitamin D3, J. Biol. Chem.248:4174–4180, 1973
Kanis, J. A., Heynen, G., Russell, R. G. G., Smith, R., Walton, R. J., Warner, G. T.: Biological effects of 24,25-dihydroxycholecalciferol in man. In A. W. Norman, K. Schaefer, J. W. Coburn, H. F. DeLuca, D. Fraser, H. Grigoleit, D. von Herrath (eds.): Vitamin D: Biochemical, Chemical and Clinical Aspects Related to Calcium Metabolism, pp. 793–795. Walter de Gruyter, Berlin, 1977
Rasmussen, H., Bordier, P.: Vitamin D and bone, Metab. Bone Dis. Rel. Res.1:7–13, 1978
Ornoy, A., Goodwin, D., Noff, D., Edelstein, S.: 24,25-Dihydroxyvitamin D is a metabolite of vitamin D essential for bone formation, Nature276:517–519, 1978
Noff, D., Edelstein, S.: Vitamin D and its hydroxylated metabolites in the rat, Horm. Res.9:292–300, 1978
Lieberherr, M., Garabedian, M., Guillozo, H., Baily du Bois, M., Balsan, S.: Interaction of 24,25-dihydroxyvitamin D3 and parathyroid hormone on bone enzymes in vitro, Calcif. Tissue Int.27:47–52, 1979
Henry, H. L., Norman, A. W.: Vitamin D: two dihydroxylated metabolites are required for normal chicken egg hatchability, Science201:835–837, 1978
Kobayashi, Y., Taguchi, T., Terada, T., Oshida, J., Morisaki, M., Ikekawa, N.: Synthesis of 24,24-difluoro- and 24ζ-fluoro-25-hydroxyvitamin D3, Tetrahedron Lett.22:2023–2026, 1979
Yamada, S., Ohmari, M., Takayama, H.: Synthesis of 24,24-difluoro-25-hydroxyvitamin D3, Tetrahedron Lett.21:1859–1862, 1979
Tanaka, Y., DeLuca, H. F., Ikekawa, N.: A study of the physiologic significance of 24-hydroxylation of 25-hydroxyvitamin D. In A. W. Norman, K. Schaefer, D. v. Herrath, H.-G. Grigoleit, J. W. Coburn, H. F. DeLuca, E. B. Mawer, T. Suda (eds.): Vitamin D: Basic Research and Its Clinical Application, pp. 531–536. Walter de Gruyter, Berlin, 1979
Tanaka, Y., DeLuca, H. F., Kobayashi, Y., Taguchi, T., Ikekawa, N., Morisaki, M.: Biological activity of 24,24-difluoro-25-hydroxyvitamin D3, J. Biol. Chem.254:7163–7167, 1979
Halloran, B. P., and DeLuca, H. F.: Effect of vitamin D deficiency on fertility and reproductive capacity in the female rat, J. Nutr.110:1573–1580, 1980
LeBel, D., Poirier, G. G., Beaudoin, A. R.: A convenient method for the ATPase assay, Anal. Biochem.85:86–89, 1978
Suda, T., DeLuca, H. F., Tanaka, Y.: Biological activity of 25-hydroxyergocalciferol in rats, J. Nutr.100:1049–1052, 1970
Shepard, R. M., Horst, R. L., Hamstra, A. J., DeLuca, H. F.: Determination of vitamin D and its metabolites in plasma from normal and anephric man, Biochem. J.182:55–69, 1979
Tanaka, Y., DeLuca, H. F., Schnoes, H. K., Ikekawa, N., Kobayashi, Y.: 24,24-Difluoro-1,25-dihydroxyvitamin D3:in vitro production, isolation, and biological activity, Arch. Biochem. Biophys.199:473–478, 1980
McMannus, J. F. A., Mowry, R. W.: Staining methods, histologic and histochemical, p. 201. Paul B. Hoeber, Inc., New York, 1960
Humphrey, C. D., Pittman, F. E.: A simple methylene blue-azure II-basic fuchsin stain for epoxy embedded tissue sections, Stain Technol.49:9–12, 1974
Kimmel, D. B., Jee, W. S. S.: A rapid plastic embedding technique for preparation of three micron thick sections of decalcified hard tissue, Stain Technol.50:83–86, 1975
Schenk, R.: Basic stereological principles. In Z. F. G. Jaworski (ed.): Bone Morphometry, pp. 21–23. University of Ottawa Press, Ottawa
Miller, S. C., Jee, W. S. S.: Ethane-1-hydroxy-1,1-diphosphonate (EHDP) effects on growth and modeling of the rat tibia, Calcif. Tissue Res.18:215–231, 1975
Bliss, C. I.: Statistics in Biology, Vol. 1, pp. 243–247. McGraw-Hill, New York, 1967
Heidelberger, C., Griesbach, L., Montas, B. J., Mooren, D., Cruz, O.: Studies on fluorinated pyrimidines. II. Effects on transplanted tumors, Cancer Res.18:305–317, 1958
Napoli, J. L., Fivizzani, M. A., Schnoes, H. K., DeLuca, H. F.: 1α-Hydroxy-25-fluorovitamin D3: a potent analogue of 1α,25-dihydroxyvitamin D3, Biochemistry17:2387–2392, 1978
Napoli, J. L., Mellon, W. S., Fivizzani, M. A., Schnoes, H. K., DeLuca, H. F.: Synthesis and biological activity of 24-hydroxy-25-fluorovitamin D3, J. Biol. Chem.254:2017–2022, 1979
Tanaka, Y., DeLuca, H. F., Schnoes, H. K., Ikekawa, N., Kobayashi, Y.: 24,24-Difluoro-1,25-dihydroxyvitamin D3:in vitro production, isolation, and biological activity, Arch. Biochem. Biophys.199:473–478, 1980
Corvol, M. T., Dumontier, M. F., Garabedian, M., Rappaport, R.: Vitamin D and cartilage. II. Biological activity of 25-hydroxycholecalciferol and 24,25-and 1,25-dihydroxycholecalciferols on cultured growth plate chondrocytes, Endocrinology102:1269–1274, 1978
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Miller, S.C., Halloran, B.P., DeLuca, H.F. et al. Studies on the role of 24-hydroxylation of vitamin D in the mineralization of cartilage and bone of vitamin D-deficient rats. Calcif Tissue Int 33, 489–497 (1981). https://doi.org/10.1007/BF02409479
Issue Date:
DOI: https://doi.org/10.1007/BF02409479