Diabetes, Vol 24, Issue 4 378-380, Copyright © 1975 by American Diabetes Association
Pituitary responsiveness to luteinizing hormone-releasing hormone in insulin-dependent diabetes mellitus
LA Distiller, J Sagel, JE Morley and HC Seftel
Impaired fertility and menstrual disturbances are common in diabetes
mellitus. In order to study the effect of diabetes on gonadotropin
secretion by the pituitary gland, twenty premenopausal diabetic females and
seven diabetic males were investigated using luteinizing hormone-releasing
hormone (LH-RH). Although the gonadotropes responded to LH-RH in the
patients studied, a relative impairment was apparent when compared to
normal matched control groups. In the female diabetic patients there was no
difference in the gonadotropin responses obtained in those with
oligomenorrhea or amenorrhea when compared to those with normal menses. A
significant inverse relationship was found between the maximum rise in
plasma luteinizing hormone and the fasting plasma glucose. These findings
suggest an influence of glucose metabolism on pitiutary gonadotropin
function. However, the reduced gonadotropin response is unlikely to be the
sole cause of the abnormal gynecologic function.