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Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice
Published on: November 16, 2011
Hypoketonemia and age-related fasting hypoglycemia in growth hormone deficiency
Abstract:
Body fuels were measured in 45 normal children and 17 growth hormone-deficient patients after 24 hours of fasting. After three months of therapy with human Growth Hormone (hGH) 16 of the patients were restudied. In all groups, beta-hydroxybutyrate (BOHB) concentrations correlated inversely with age and with glucose concentrations. When adjusted for these factors, the concentrations of BOHB were significantly lower in the growth hormone-deficient patients than in the control children, before (P less than 0.01) as well as after therapy (P less than 0.01). Only the five youngest patients became hypoglycemic. During fasting, ketones, which serve as an alternative fuel for the brain, spare glucose. Thus, a shortage of ketones would compromise the ability of the patient to conserve glucose and predispose the patient to fasting hypoglycemia. Accordingly, we propose that hypoketonemia is a critical factor in the genesis of fasting hypoglycemia in growth hormone deficiency.
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