Martyn P, Falconer I R
J Steroid Biochem. 1985 Aug;23(2):159-63. doi: 10.1016/0022-4731(85)90231-6.
The possible inhibitory effect of steroids related to progesterone on prolactin-stimulated fatty acid synthesis in mammary alveolar explants from 11-day pseudopregnant rabbits, after culture, was investigated. Like progesterone, 17 alpha-hydroxyprogesterone, 20 alpha-dihydroprogesterone, medroxyprogesterone acetate, ethinodiol diacetate, ORG 2058 were inhibitory whereas pregnenolone and 5 alpha-pregnan-3,20-dione were not.