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Related Experiment Videos

Growth hormone and insulin interactions.

S Caprio1, D Boulware, V Tamborlane

  • 1Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06510.

Hormone Research
|January 1, 1992
PubMed
Summary

Growth hormone (GH) therapy impacts childhood glucose and insulin responses similarly to puberty. In Turner's syndrome, GH therapy further amplifies glucose-stimulated insulin secretion.

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Area of Science:

  • Pediatric Endocrinology
  • Metabolic Research
  • Growth Hormone Therapy

Background:

  • Childhood presents unique metabolic challenges regarding insulin action and secretion.
  • Growth hormone (GH) therapy is a common treatment for various pediatric conditions.
  • Puberty is characterized by physiological insulin resistance, primarily affecting peripheral glucose metabolism.

Purpose of the Study:

  • To investigate the effects of growth hormone (GH) therapy on insulin action and secretion in children.
  • To compare the metabolic effects of GH therapy in childhood to those observed during natural puberty.
  • To examine insulin secretion patterns in children with Turner's syndrome, with and without GH treatment.

Main Methods:

  • Utilized gold-standard insulin and glucose clamp techniques for precise metabolic assessment.
  • Monitored glucose, amino acid, and insulin responses during clamp studies.
  • Included pediatric patients undergoing GH therapy and patients with Turner's syndrome.

Main Results:

  • GH therapy induced metabolic changes in children resembling those seen in puberty.
  • Insulin resistance associated with puberty may be localized to peripheral glucose metabolism.
  • Turner's syndrome patients exhibited heightened glucose-stimulated insulin secretion, further increased by GH treatment.

Conclusions:

  • GH therapy in children mimics pubertal metabolic shifts.
  • Insulin resistance during puberty might be specific to peripheral tissues.
  • GH therapy exacerbates insulin hyper-secretion in Turner's syndrome, highlighting unique endocrine interactions.

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