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  • Title: Influence of hormonal contraceptives on the pituitary response to LH/FSH-releasing hormone.
    Author: Carol W, Lauterbach H, Klinger G, Möller R.
    Journal: Endokrinologie; 1978 Mar; 71(3):277-85. PubMed ID: 357145.
    Abstract:
    In the pre-ovulatory phase the absolute and relative LH increase was much greater than during the luteal phase and less pronounced in the early follicular phase of the normal cycle. FSH release was affected only during the pre-ovulatory period, where a retarded, 3- or 4-fold increase compared to basal levels was recorded. In the women taking oral contraceptives of the conventional type the first LH-RH test showed gonadotropin responses similar to those obtained during the luteal phase of the controls. The second test brought a significantly lower LH response, suggesting an increasing exogenous steroid inhibition at the pituitary level in the course of the therapeutic cycle. This inhibition seems to be reversed during the monthly tablet-free interval. A particularly small and retarded gonadotropin response was observed in patients taking Deposiston. These results are discussed as to their clinical significance.
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