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Hyperinsulinaemia in hyperprolactinaemic women
Clinical Endocrinology
|October 1, 1980
Summary
Young women with hyperprolactinaemia exhibit elevated insulin levels despite normal blood glucose. This condition, known as normoglycaemic hyperinsulinaemia, affects blood metabolite responses to meals.
Area of Science:
- Endocrinology
- Metabolic Research
Background:
- Hyperprolactinaemia, a condition of elevated prolactin, can influence metabolic processes.
- Understanding the metabolic consequences of hyperprolactinaemia is crucial for patient management.
Purpose of the Study:
- To investigate the metabolic effects of hyperprolactinaemia in young females over a 12-hour period.
- To compare metabolic parameters between hyperprolactinaemic subjects and healthy controls.
Main Methods:
- Studied nine young females with hyperprolactinaemia and fourteen matched controls.
- Monitored blood glucose, serum insulin, lactate, pyruvate, alanine, glycerol, and 3-hydroxybutyrate levels over 12 hours with normal meals and activity.
Main Results:
- Hyperprolactinaemic subjects showed normal fasting glucose and glucose response to meals but exaggerated insulin response and persistent hyperinsulinaemia.
- Increased blood lactate, pyruvate, and alanine levels were observed post-meal in patients.
- Lower blood glycerol and 3-hydroxybutyrate concentrations were found in hyperprolactinaemic subjects, with a negative correlation between insulin and 3-hydroxybutyrate.
Conclusions:
- Excess prolactin in young females is associated with normoglycaemic hyperinsulinaemia.
- Observed changes in blood metabolites are likely secondary to elevated insulin levels.