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Burn-induced hypermetabolism and skeletal muscle dysfunction.

Carly M Knuth1, Christopher Auger2, Marc G Jeschke1,3,4,5

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Burn injuries cause severe metabolic changes and muscle breakdown, increasing mortality risk. This review explores burn-specific skeletal muscle dysfunction and treatments to improve patient outcomes.

Keywords:
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Area of Science:

  • Biomedical Science
  • Metabolic Research
  • Trauma Care

Background:

  • Critical illnesses like sepsis and cancer cachexia cause metabolic derangements and muscle catabolism.
  • Burn injuries induce a severe, prolonged hypermetabolic state, significantly increasing morbidity and mortality risks.
  • Skeletal muscle plays a key role in burn-induced hypermetabolism, serving as a fuel source and experiencing sustained catabolism even after wound healing.

Purpose of the Study:

  • To review the unique pathophysiological response to burn injury.
  • To focus on skeletal muscle function and metabolism following burns.
  • To discuss treatment options and future directions for mitigating muscle catabolism.

Main Methods:

  • Review of existing literature on burn injury pathophysiology.
  • Analysis of skeletal muscle dysfunction across different burn types (thermal, electrical, chemical).
  • Examination of hypermetabolism-driven mechanisms affecting muscle.
  • Overview of current and potential therapeutic strategies.

Main Results:

  • Burn injuries uniquely impact skeletal muscle metabolism compared to other critical illnesses.
  • Mechanisms beyond wound healing contribute to persistent muscle catabolism post-burn.
  • Diverse consequences on skeletal muscle dysfunction are observed between thermal, electrical, and chemical burns.

Conclusions:

  • Understanding burn-specific skeletal muscle dysfunction is crucial for improving patient care.
  • Targeting hypermetabolism and muscle catabolism holds promise for reducing burn-related morbidity and mortality.
  • Further research into novel treatment strategies is warranted to enhance recovery and survival rates.