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Pancreatic glucagon levels in infants and children with hyperinsulinemia
E Pronicka1, B Gruszczyńska, B Woźniewicz
1Department of Metabolic Diseases, Child Health Center, Warsaw, Poland.
Insights
Elevated pancreatic glucagon levels in patients with hyperinsulinemic hypoglycemia correlate with disease severity and duration. Glucagon levels decrease with effective treatment, indicating its role in this condition.
Area of Science:
- Endocrinology
- Pediatric Endocrinology
- Metabolic Disorders
Background:
- Hyperinsulinemic hypoglycemia is a serious condition characterized by excessive insulin secretion.
- Pancreatic glucagon plays a role in glucose homeostasis, but its secretion pattern in hyperinsulinemic hypoglycemia is not fully understood.
Purpose of the Study:
- To investigate the relationship between serum pancreatic glucagon levels and the clinical presentation of hyperinsulinemic hypoglycemia.
- To assess the impact of treatment on glucagon secretion in these patients.
Main Methods:
- Serum glucagon concentrations were measured in 40 patients diagnosed with hyperinsulinemic hypoglycemia.
- Glucagon levels were analyzed in relation to disease severity (infants with severe disease vs. children with episodic hypoglycemia) and in response to treatment (diazoxide and pancreatectomy).
Main Results:
- Markedly elevated glucagon levels were observed in infants with severe hyperinsulinemic hypoglycemia.
- Lower glucagon levels were found in children experiencing episodic hypoglycemia.
- Glucagon levels decreased proportionally with insulin suppression during diazoxide treatment and after pancreatectomy.
Conclusions:
- Glucagon secretion appears to be retained in hyperinsulinism, proportional to insulin hypersecretion.
- Increased serum glucagon levels serve as an indicator of the duration and severity of hyperinsulinemic hypoglycemia.
Abstract:
Serum concentrations of pancreatic glucagon were measured in 40 patients with hyperinsulinemic hypoglycemia. In infants with severe disease the glucagon levels were markedly elevated; lower levels were observed in children with episodic hypoglycemia. During diazoxide treatment and after pancreatectomy, the glucagon levels decreased proportionally to suppression of the insulin secretion. Thus the secretion of glucagon seems to be retained in hyperinsulinism in proportion to the insulin hypersecretion, and an increased glucagon level indicates long during and severity of hyperinsulinemic hypoglycemia.