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Metabolism in hematologic malignancy.

D A Humberstone1, J H Shaw

  • 1University Department of Surgery, Auckland Hospital, New Zealand.

Cancer
|October 15, 1988
PubMed
Summary
This summary is machine-generated.

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Hematologic malignancy patients exhibit distinct metabolic profiles. Leukemia/myeloproliferative disorders (LEMP) show elevated energy expenditure and protein catabolism compared to lymphoma (LYMPH) patients.

Area of Science:

  • Metabolic research
  • Oncology
  • Human physiology

Background:

  • Hematologic malignancies encompass diverse conditions with potentially varied metabolic impacts.
  • Understanding metabolic differences is crucial for patient management and therapeutic strategies.

Purpose of the Study:

  • To investigate and compare energy expenditure and metabolic profiles in patients with lymphoma (LYMPH) versus leukemia or myeloproliferative disorders (LEMP).
  • To determine if hematologic malignancies represent a metabolically homogeneous group.

Main Methods:

  • Isotopic infusions of 6-3H-glucose, U-14C-glucose, and 14C-urea were administered.
  • Indirect calorimetry was used to measure energy expenditure.
  • Metabolic parameters including glucose production, oxidation, recycling, protein catabolism, and hormonal levels were assessed in 19 patients.

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Main Results:

  • Leukemia/myeloproliferative disorders (LEMP) patients exhibited significantly elevated Resting Energy Expenditure (REE) and Net Protein Catabolism (NPC) compared to Lymphoma (LYMPH) patients.
  • LEMP patients showed increased glucose production and recycling, with depressed glucose oxidation, unlike LYMPH patients.
  • Serum cortisol concentrations were significantly higher in LEMP patients.

Conclusions:

  • Hematologic malignancy is not a metabolically homogeneous group.
  • LEMP patients represent a distinct subgroup with significant abnormalities in glucose and protein metabolism, and energy expenditure.
  • LYMPH patients demonstrated metabolic profiles similar to normal individuals.