As the outstanding findings resulting from this investigation, we may state the following: 1. 1.
Length of the Menstrual Cycle.—1.1. A. The ingestion of 10 mg. of norethynodrel …

Most oral contraceptives (OC) contain a progestin in combination with an estrogen, and the
progestin component in OC includes one of the following 19-nortestosterone derivatives …

Experience with the use of progestinestrogen preparations as oral contraceptives indicates
that they inhibit fertility by preventing ovulation and that their action is clearly a physiological …

Publisher Summary This chapter discusses the mechanism of action of hypothalamic
hormones in the anterior pituitary gland and specific modulation of their activity by sex …

In previous publications we have reported that progesterone and certain of its chemical
relatives are effective inhibitors of ovulation in rabbits, rats, and women (1-4). Among the …

The secretion rate and the pattern of metabolism of cortisol and of aldosterone were studied
in women receiving oral doses of Enovid, norethynodrel, ethynylestradiol 3-methyl ether …

17αAcetoxy-6 methyl pregna 4: 6-diene-3: 20-dione (BDH 1298), has been given the
approved name of Megestrol acetate. It appears to be the most potent anti-ovulatory …

The interaction of norethisterone (NET) and four A-ring reduced metabolites of NET with
cytosol receptors for progesterone (PR), androgen (AR), and estrogen (ER) was …

Single doses of 150 mg each of five different testosterone and nor-testosterone derivatives
were given to four normal male subjects and urinary excretions of 17-ketosteroids, 17 …

Seven 19-norsteroids, 17α-ethinyl-19-nortestosterone (I), 17α-ethinyl-5 (10)-estraenolone
(II), 17α-ethyl-19-nortestosterone (III), 17α-methyl-19-nortestosterone (IV), 17α-propyl-l9 …