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Related Experiment Videos

How do we best measure growth hormone action?

H J Guyda1

  • 1Department of Pediatrics, Montreal Children's Hospital, Que., Canada. hguyend@mchmeds.mchis.mcgill.ca

Hormone Research
|January 1, 1997
PubMed
Summary

Growth hormone (GH) therapy response is assessed using auxological, biochemical, and body composition measures. Serum IGF-I is the most reliable indicator for monitoring GH action across all age groups.

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Area of Science:

  • Endocrinology
  • Pediatrics
  • Metabolic Disorders

Background:

  • Growth hormone (GH) is a potent anabolic hormone influencing growth and metabolism.
  • Assessing GH therapy efficacy involves auxological, biochemical, and body composition parameters.
  • Current methods show variability and limited predictive power for GH response.

Purpose of the Study:

  • To review and evaluate the parameters used for assessing growth hormone (GH) therapy response.
  • To identify the most reliable indicators for predicting and monitoring GH action in children and adults.

Main Methods:

  • Review of auxological parameters: height, height velocity (HV), and final adult height.
  • Analysis of biochemical markers: nonspecific (glucose, insulin), GH-IGF axis (IGF-I, IGFBP-3), and bone metabolism indices.
  • Evaluation of body composition metrics: BMI, body fat, body water, and bone mineral density.

Main Results:

  • Auxological measures like height and HV may not always correlate.
  • Biochemical markers and body composition changes show modest effects with significant variability.
  • GH dose is a significant positive factor across all measured parameters.
  • Serum IGF-I emerges as the most consistent and integrated indicator of GH action.

Conclusions:

  • Few current tests reliably predict or monitor GH therapy response.
  • Serum IGF-I offers the most integrated and reliable assessment of GH activity in both pediatric and adult populations.
  • Further research may refine existing markers or identify novel indicators for GH therapy monitoring.

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