Abstract

The responses of luteinizing hormone, follicle-stimulating hormone, and prolactin to prolonged administration of the dopamine receptor antagonist metoclopramide (5 mg twice daily) were investigated in six normal women and six women with low-weight amenorrhea (LWA). In contrast to the normal group, the LWA group showed no significant changes in the mean basal prolactin level or the mean prolactin response to stimulation with thyrotropin-releasing hormone, but there was an significant elevation of the mean net increase in luteinizing hormone after stimulation with gonadotropin-releasing hormone. On the basis of these data, the possibility of increased central dopaminergic activity in women with LWA is discussed.

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