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Science 12 March 1982:
Vol. 215. no. 4538, pp. 1403 - 1405
DOI: 10.1126/science.6977846
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Articles

Science, Vol 215, Issue 4538, 1403-1405
Copyright © 1982 by American Association for the Advancement of Science

articles

Brain target sites for 1,25-dihydroxyvitamin D3

WE Stumpf, M Sar, SA Clark, and HF DeLuca

Autoradiographic studies with 3H-labeled 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] demonstrate, in certain neurons of rat forebrain, hindbrain, and spinal cord, a nuclear retention and concentration of radioactivity, which can be prevented by treatment with 1,25(OH)2D3, but not with 25-hydroxyvitamin D3. These results indicate the presence of brain receptors in addition to pituitary receptors for 1,25(OH)2D3 and suggest a central modulation of calcium homeostasis and other central effects for this hormone. The existence of a brain-pituitary axis for certain 1,25(OH)2D3-mediated endocrine-autonomic effects is postulated.


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