alexa Impaired insulin action in puberty. A contributing factor to poor glycemic control in adolescents with diabetes.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Amiel SA, Sherwin RS, Simonson DC, Lauritano AA, Tamborlane WV

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Abstract Patients with insulin-dependent diabetes mellitus often have poor metabolic control during puberty. To determine whether puberty is associated with decreased insulin-stimulated glucose metabolism, we compared the results of euglycemic insulin-clamp studies in adults and prepubertal and pubertal children with and without insulin-dependent diabetes. In nondiabetic pubertal children, insulin-stimulated glucose metabolism (201 +/- 12 mg per square meter of body surface area per minute) was sharply reduced, as compared with that of prepubertal children and adults (316 +/- 34 and 290 +/- 21 mg per square meter, respectively; P less than 0.01), despite comparable hyperinsulinemia (insulin levels of 80 to 90 microU per milliliter). Similarly, the response to insulin was 25 to 30 percent lower in the diabetic pubertal children than in the diabetic prepubertal children (P less than 0.05) and adults (P = 0.07). At each stage of development, the stimulating effect of insulin on glucose metabolism was decreased by 33 to 42 percent in the children with diabetes (P less than 0.01). In all the groups of children studied, the response to insulin was inversely correlated with mean 24-hour levels of growth hormone (r = -0.52, P = 0.01). Among the diabetic children, the glycosylated hemoglobin levels were substantially higher in the pubertal children than in the prepubertal children (P less than 0.02), although the daily insulin doses tended to be higher. These data suggest that insulin resistance occurs during puberty in both normal children and children with diabetes. The combined adverse effects of puberty and diabetes on insulin action may help explain why control of glycemia is so difficult to achieve in adolescent patients. This article was published in N Engl J Med and referenced in Journal of Diabetes & Metabolism

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