PMID: 737158Dec 1, 1978Paper

Secretion patterns of plasma-progesterone, 17-hydroxyprogesterone and 20 alpha hydroxypregn-4-en-3-one in early normal pregnancy

British Journal of Obstetrics and Gynaecology
R F HarrisonJ Dewhurst

Abstract

Plasma levels of progesterone, 17-hydroxyprogesterone and 20 alpha hydroxypregn-4-en-3-one were established from 4 to 16 weeks gestation by sampling 15 normal patients twice weekly. Apart from a peak at week 5, the mean levels of progesterone remained constant at about 24 ng/ml until week 10 and then rose progressively to 40 ng/ml at week 16.20 alpha hydroxypregn-4-en-3-one remained within the 7 to 9 ng/ml range apart from a peak at week 5. A significant decrease in mean levels of 17-hydroxy-progesterone was noted from week 5 to a nadir of 3 ng/ml at week 11. It would appear that the main hormone production of progesterones in pregnancy has been taken over by the placental unit by the 10th week.

References

Mar 1, 1977·Fertility and Sterility·J R ByrdP G McDonough
Jun 1, 1976·British Journal of Obstetrics and Gynaecology·C S CorkerJ Parboosingh
Dec 1, 1972·Steroids·E YoussefnejadianI F Sommerville
Nov 1, 1973·American Journal of Obstetrics and Gynecology·D R MishellR M Nakamura
Oct 1, 1973·Steroids·E Florensa, I F Sommerville
Feb 1, 1972·Biochemistry·R J TheriaultH E Zaugg
Mar 1, 1972·Acta Endocrinologica·Y Emment, W P Collins
Feb 1, 1969·The Journal of Clinical Endocrinology and Metabolism·T YoshimiM B Lipsett
Jul 1, 1969·The Journal of Obstetrics and Gynaecology of the British Commonwealth·S Campbell
Oct 1, 1960·The Journal of Obstetrics and Gynaecology of the British Empire·B ETON, R V SHORT
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Nov 1, 1963·Clinica Chimica Acta; International Journal of Clinical Chemistry· VAN MOLENH

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Citations

Sep 1, 1985·European Journal of Obstetrics, Gynecology, and Reproductive Biology·R F Harrison
Dec 28, 1992·European Journal of Obstetrics, Gynecology, and Reproductive Biology·R F Harrison
Apr 1, 1984·European Journal of Obstetrics, Gynecology, and Reproductive Biology·I Gerhard, B Runnebaum
Jul 1, 1983·British Journal of Obstetrics and Gynaecology·M O AspillagaT Lind

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