OBJECTIVE: To investigate the effect of growth hormone (GH) treatment on skeletal muscle protein catabolism in patients with multiple organ failure in the intensive care unit (ICU). SUMMARY BACKGROUND DATA: Skeletal muscle depletion affects the incidence of complications and the length of hospital stay. A protein-sparing effect of GH treatment in skeletal muscle of long-term ICU patients was hypothesized. METHODS:Twenty critically ill ICU patients were randomized to treatment with GH (0.3 U/kg/day) or as controls. Percutaneous muscle biopsy samples were taken before and after a 5-day treatment period starting on day 3 to 42 of the patient's ICU stay. Protein content, protein synthesis, water, nucleic acids, and free amino acids in muscle were analyzed. RESULTS: The protein content decreased by 8% +/- 11% in the control patients, with no significant change in the GH group. The fractional synthesis rate of muscle proteins increased in the GH group by 33% +/- 48%, and muscle free glutamine increased by 207% +/- 327% in the GH group. Total intramuscular water increased by 12% +/- 14% in the control group as a result of an increase in extracellular water of 67% +/- 86%; these increases were not seen in the GH group. In contrast, the intracellular water increased by 6% +/- 8% in the GH group. CONCLUSION: Treatment with GH for 5 days in patients with multiple organ failure stimulated muscle protein synthesis, increased muscle free glutamine, and increased intracellular muscle water.
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OBJECTIVE: To investigate the effect of growth hormone (GH) treatment on skeletal muscle protein catabolism in patients with multiple organ failure in the intensive care unit (ICU). SUMMARY BACKGROUND DATA: Skeletal muscle depletion affects the incidence of complications and the length of hospital stay. A protein-sparing effect of GH treatment in skeletal muscle of long-term ICU patients was hypothesized. METHODS: Twenty critically ill ICUpatients were randomized to treatment with GH (0.3 U/kg/day) or as controls. Percutaneous muscle biopsy samples were taken before and after a 5-day treatment period starting on day 3 to 42 of the patient's ICU stay. Protein content, protein synthesis, water, nucleic acids, and free amino acids in muscle were analyzed. RESULTS: The protein content decreased by 8% +/- 11% in the control patients, with no significant change in the GH group. The fractional synthesis rate of muscle proteins increased in the GH group by 33% +/- 48%, and muscle free glutamine increased by 207% +/- 327% in the GH group. Total intramuscular water increased by 12% +/- 14% in the control group as a result of an increase in extracellular water of 67% +/- 86%; these increases were not seen in the GH group. In contrast, the intracellular water increased by 6% +/- 8% in the GH group. CONCLUSION: Treatment with GH for 5 days in patients with multiple organ failure stimulated muscle protein synthesis, increased muscle free glutamine, and increased intracellular muscle water.
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