Abstract
Three groups of post-menopausal women were treated with percutaneous 17β-oestradiol 3 mg daily opposed by lynestrenol 5 mg or natural micronized progesterone 200 mg and 300 mg, respectively. During 6 mth of cyclic replacement oestrogen serum levels were increased corresponding to follicular phase values. The pre-treatment ratio E 1/E 2 was unchanged which is in contrast to oral therapy. Progesterone had a much weaker effect on FSH levels than lynestrenol. Women treated with progestogen had regular withdrawal bleedings, while the micronized progesterone was insufficient in this respect. No increase of the oestrogen-sensitive liver proteins, sex hormone binding globulin (SHBG) and pregnancy zone protein (PZP), was recorded in spite of a marked increase in circulating oestrogens.
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