PMID: 3755116Jun 1, 1986Paper

Androgen and estradiol levels in plasma and amniotic fluid of late gestational male and female hamsters: uterine position effects

Hormones and Behavior
A J Vomachka, R D Lisk

Abstract

Using radioimmunoassay we have measured the plasma and amniotic fluid levels of androgen and estradiol in male and female hamster fetuses nearing parturition. On Days 14 and 15 of gestation (day of birth = Day 16), plasma levels of androgen are higher in males than females while estradiol levels are equal. Amniotic fluid levels of these hormones, while lower than plasma, reflect the difference in androgen and the similarity in estradiol between sexes. Uterine position analysis on Day 14 suggests that female siblings located caudally suppress amniotic fluid androgen and elevate estradiol levels of male siblings. Comparison of Day 18 gestation male and female rat amniotic fluid androgen to Day 14 hamsters reveals that male rats are bathed in high levels of androgen. Female rats have lower levels which are not different from those of male hamsters. Female hamsters are exposed to little androgen. Relevance to behavioral sexual differentiation and the display of adult behavior is discussed.

References

Jan 1, 1979·Neuroscience and Biobehavioral Reviews·M J Baum
Mar 1, 1978·Biology of Reproduction·P F Terranova, G S Greenwald
Sep 1, 1974·Hormones and Behavior·R Noble
Dec 1, 1971·The Journal of Endocrinology·L Tiefer, W A Johnson
Jan 1, 1984·Biology of the Neonate·G PointisL Cedard
May 1, 1983·Journal of Reproduction and Fertility·J T VreeburgM P Ooms
Jan 1, 1982·Biology of the Neonate·S Naessany, R Picon

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Citations

Feb 1, 1990·Physiology & Behavior·M M ClarkB G Galef
Oct 1, 1990·Physiology & Behavior·E J Houtsmuller, A K Slob
Feb 1, 1991·Physiology & Behavior·M M ClarkB G Galef
Mar 1, 1995·Physiology & Behavior·E J HoutsmullerA K Slob
Jun 30, 1994·Behavioural Brain Research·E J HoutsmullerD L Rowland
Dec 14, 2002·Neuroscience and Biobehavioral Reviews·Bryce C Ryan, John G Vandenbergh
Apr 1, 1989·The Veterinary Quarterly·B W Knol, S T Egberink-Alink
Mar 1, 1991·Developmental Psychobiology·M M ClarkF S vom Saal
May 17, 2019·Biology of Reproduction·Claire StenhouseCheryl J Ashworth

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