| Literature DB >> 6897337 |
T K Gray, T McAdoo, L Hatley, G E Lester, M Thierry.
Abstract
The serum concentrations of total calcium and 1,25-dihydroxyvitamin D3 were measured in seven women during a menstrual cycle. A rise in the serum level of 1,25-dihydroxyvitamin D3 was observed on day 15 of the cycle without a detectable change in the serum calcium level. The level of 1,25-dihydroxyvitamin D3 on day 15 was double the value at days 1 and 8 of the cycle. The peak of 1,25-dihydroxyvitamin D3 on day 15 was not observed in five women ingesting oral contraceptives, suggesting that ovulation or its hormonal control was involved in the peak on day 15. A small but significant fall in the serum calcium concentration occurred in the women ingesting oral contraceptives. In view of these findings the serum concentrations of 1,25-dihydroxyvitamin D in women with functioning ovaries must be interpreted in the context of the stage of the menstrual cycle when the blood sample was obtained.Entities:
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Year: 1982 PMID： 6897337 DOI： 10.1016/0002-9378(82)90177-6
Source DB: PubMed Journal: Am J Obstet Gynecol ISSN： 0002-9378 Impact factor: 8.661