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The hypothalamic-pituitary axis in diabetes mellitus
Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme
|November 1, 1980
Summary
Male diabetics on glibenclamide showed exaggerated luteinizing hormone (LH) and follicle-stimulating hormone (FSH) responses to gonadotropin-releasing hormone (GnRH). Other diabetic groups had normal responses, indicating intact pituitary function in uncomplicated diabetes.
Area of Science:
- Endocrinology
- Metabolic Disorders
- Reproductive Health
Background:
- Diabetes mellitus can affect hormonal regulation.
- The impact of hypoglycemic agents on the hypothalamic-pituitary-gonadal axis requires further investigation.
- Understanding hormonal responses in diabetic patients is crucial for managing complications.
Purpose of the Study:
- To evaluate the hormonal response to gonadotropin-releasing hormone (GnRH) and thyrotropin-releasing hormone (TRH) in male diabetic patients.
- To compare the hormonal profiles of diabetic patients on different therapies: glibenclamide, NPH insulin, and diet alone.
- To assess the integrity of pituitary gonadotropin (LH, FSH), prolactin (PRL), and thyroid-stimulating hormone (TSH) secretion.
Main Methods:
- Three groups of male diabetic patients were studied (n=5 each): glibenclamide therapy, NPH insulin therapy, and dietary therapy alone.
- Hormonal responses to intravenous injections of LHRH and TRH were measured.
- Basal and stimulated levels of LH, FSH, PRL, and TSH were analyzed and compared to controls.
Main Results:
- Diabetic patients on NPH insulin and diet alone exhibited normal gonadotropin responses to LHRH.
- Patients treated with glibenclamide showed significantly exaggerated LH and FSH responses to LHRH, despite normal basal levels.
- Basal and TRH-stimulated PRL and TSH levels were normal across all diabetic groups.
Conclusions:
- Pituitary secretion of LH, FSH, TSH, and PRL is generally intact in uncomplicated diabetes mellitus.
- Exaggerated LH and FSH responses in glibenclamide-treated patients may suggest primary gonadal dysfunction or augmented pituitary gonadotropin secretion.
- Glibenclamide therapy might influence gonadal function or pituitary responsiveness in diabetic males.