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Exp Clin Endocrinol Diabetes 1994; 102(3): 166-168
DOI: 10.1055/s-0029-1211277
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© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York

The horse feto-placental unit

E. Möstl
  • Institut für Biochemie, Veterinärmedizinische Universität Wien, Österreich
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Publication History

Publication Date:
15 July 2009 (online)

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Summary

In the pregnant mare two different groups of oestrogens are produced by the placenta. The precursor of “classical” oestrogens (oestrone, oestradiol-17ß and oestradiol-17a) is dehydroepiandrosterone which orig-inates from the fetal gonads.

The ring B unsaturated oestrogens (equilin and equilenin and their derivatives) derive from farnesyl pyrophos-phate by a pathway not involving cholesterol.

Key words

feto-placental unit - mare - oestrogens