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  • Title: A study of the effect of bromocriptine on serum oestradiol, prolactin, and follicle stimulating hormone levels in puerperal women.
    Author: Nader S, Kjeld JM, Blair CM, Tooley M, Gordon H, Fraser TR.
    Journal: Br J Obstet Gynaecol; 1975 Sep; 82(9):750-4. PubMed ID: 1101945.
    Abstract:
    Nine normal women were examined in the first 11 days of the puerperium. Serum prolactin, oestradiol and follicle simulating hormone (FSH) levels were measured and the FSH response to 100 mug of intravenously administered follicle stimulating hormone/lutenizing hormone-releasing hormone (LH/FSH-RH) was assessed on day 1 post partum in five subjects and on days 4 (two subjects), 6 and 7 post partum in the other four subjects. Bromocriptine therapy was given to six of these women and four to seven days after the start of such therapy, when prolactin levels had fallen to normal non-pregnant levels, these women were retested. Before bromocriptine treatment, the basal FSH levels were unmeasurable in six and low in one other of the nine subjects. After bromocriptine treatment, the basal FSH levels were measurable in four out of six patients and were higher than in the untreated patients (P less than 0-01). The FSH response to LH/FSH-RH was unmeasurable in eight out of nine before treatment, which is less than the response seen in 26 normal men and women (P less than 0-01). There was also no discernible FSH response to LH/FSH-RH after treatment with bromocriptine. Before treatment with bromocriptine, the serum prolactin levels were elevated in all nine women but were within the normal range for non-pregnant women after three days of bromocriptine therapy. Thus postpartum gonadotrophin suppression seemed to depend on high prolactin levels and at least part of the antigonadotrophic action of prolactin seemed to be at pituitary level.
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