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Updated: Aug 18, 2026

Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice
Published on: November 16, 2011
[Sensibility to insulin in obese children (author's transl)]
Insights
Obese children show normal glucose tolerance but elevated insulin levels, indicating hyperinsulinemia. Their response to external insulin is normal, suggesting underlying factors for insulin resistance require further study.
Area of Science:
- Pediatric Endocrinology
- Metabolic Research
- Human Physiology
Context:
- Obesity in children is a growing concern with potential metabolic complications.
- Understanding insulin dynamics is crucial for managing pediatric metabolic health.
- Previous studies have explored glucose metabolism in obese youth, but insulin secretion patterns require further elucidation.
Purpose:
- To investigate glucose and insulin levels during an intravenous glucose tolerance test in obese children.
- To assess the insulin sensitivity of obese children using a hypoglycemic tolerance test.
- To identify potential factors contributing to endogenous insulin resistance in this population.
Summary:
- Obese children (n=46) and controls (n=19) underwent intravenous glucose tolerance testing.
- Results showed normal glucose tolerance but hyperinsulinemia in obese children.
- Insulin sensitivity was normal in a subset of obese children during induced hypoglycemia.
Impact:
- This study highlights hyperinsulinemia as a key metabolic characteristic in obese children, even with normal glucose tolerance.
- Findings suggest that endogenous insulin resistance mechanisms in obese children are complex and not solely related to exogenous insulin sensitivity.
- Further research is needed to identify the specific factors responsible for endogenous insulin resistance in pediatric obesity.
Abstract:
The glucose and immuno-reactive insulin blood levels of 46 obese children and nineteen controls were measured during the intra-venous glucose tolerance test. The glucose tolerance of the obese children was normal, whereas their blood insulin curves demonstrated hyperinsulinmeia. The sensibility to exogenous insulin in 29 of these children was within normal limits during the hypoglycemic tolerance test induced by injection of intravenous insulin. The factors explaining endogenous insulin resistance have not yet been elucidated.
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