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Cancer cachexia is transmissible in plasma.

K A Illig1, N Maronian, J L Peacock

  • 1Department of Surgery, University of Rochester Medical Center, New York 14642.

The Journal of Surgical Research
|April 1, 1992
PubMed
Summary
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Cancer cachexia, a wasting syndrome, appears to be transmitted through plasma, suggesting a circulating factor is responsible. This finding opens avenues for identifying therapeutic targets for cancer patients.

Area of Science:

  • Oncology
  • Metabolic Research
  • Physiology

Background:

  • Cancer cachexia is a complex syndrome characterized by involuntary weight loss and metabolic dysfunction.
  • The precise mechanisms driving cancer cachexia, including nutrient competition and inhibitory factors, remain incompletely understood.

Purpose of the Study:

  • To investigate whether cancer cachexia is mediated by a transmissible factor in the plasma of tumor-bearing animals.
  • To explore the role of circulating molecules in the development of anorexia, weight loss, and altered nitrogen balance associated with cancer cachexia.

Main Methods:

  • Plasma was collected from tumor-bearing rats (TBP) and non-tumor-bearing rats (NTBP).
  • Plasma was infused into normal rats in a blinded, randomized manner for four days.

Related Experiment Videos

  • Food intake, nitrogen excretion, body weight, and organ masses were measured.

    • Main Results:

    • Rats receiving TBP plasma exhibited profound anorexia and significantly greater body weight loss compared to NTBP plasma recipients.
    • Nitrogen balance was negative in the TBP group and positive in the NTBP group, indicating altered protein metabolism.
    • Cardiac and gastrocnemius muscle masses decreased, while hepatic mass remained unaffected in TBP plasma recipients.

    Conclusions:

    • The results demonstrate that cancer-associated cachexia is transmissible via plasma, suggesting mediation by circulating factor(s).
    • Identification of these plasma-borne molecules could lead to novel therapeutic strategies for managing cancer cachexia.