Abstract

The serum levels of thyrotrophin (TSH), prolactin (PRL) and growth hormone (GH) and the response of these hormones to 500 mug thyrotrophin-releasing hormone (TRH) iv were studied in menstruating women, in post-menopausal women before and after 2 mg oestradiol valerate for 5 consecutive days, and in men on long term oestrogen treatment. Oestrogen treatment had no effect on basal serum TSH levels, which were within the normal range in all groups. The TSH response to TRH was not different in menstruating and post-menopausal women and was not changed in the latter group after oestrogen treatment. In men treated chronically with oestrogens, the TSH response to TRH was similar to that found in normal male subjects.

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