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Related Experiment Videos

Beta-blockade and growth hormone after burn.

David W Hart1, Steven E Wolf, David L Chinkes

  • 1Department of Surgery, The University of Texas Medical Branch, Shriners Hospitals for Children, Galveston, Texas 77550, USA.

Annals of Surgery
|October 9, 2002
PubMed
Summary

Propranolol, not growth hormone (GH), improved muscle protein balance in children with severe burns. Combination therapy did not show additive anabolic effects for burn recovery.

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Area of Science:

  • Biomedical research
  • Metabolic studies
  • Pediatric critical care

Background:

  • Severe burns induce hypercatabolism, increasing the need for anabolic interventions.
  • Growth hormone (GH) and propranolol have demonstrated anabolic properties independently.
  • Investigating combined GH and propranolol for enhanced anabolic effects in burn patients is warranted.

Purpose of the Study:

  • To evaluate the additive effects of propranolol and growth hormone (GH) in combating burn-induced catabolism.
  • To assess the impact of individual and combined anabolic therapies on muscle protein kinetics and energy expenditure.
  • To determine the efficacy of propranolol and GH in pediatric burn patients.

Main Methods:

  • Randomized controlled trial involving 56 children with >40% TBSA burns.

Related Experiment Videos

  • Four treatment arms: control, GH, propranolol, and combination GH + propranolol.
  • Measurements included indirect calorimetry for resting energy expenditure and stable isotope infusions for muscle protein kinetics.

    • Main Results:

    • Propranolol treatment decreased tachycardia and energy expenditure.
    • Both propranolol and combination therapy improved net muscle protein balance.
    • Growth hormone alone showed no significant benefit; no additive effect was observed with combination therapy.

    Conclusions:

    • Propranolol demonstrates significant anabolic activity in the early hypercatabolic phase post-burn.
    • No synergistic anabolic effect was identified when combining propranolol with growth hormone.
    • Propranolol alone may be a beneficial anabolic agent for severe pediatric burns.