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Related Experiment Videos

Cytokines and cachexia

P Matthys1, A Billiau

  • 1Rega Institute, Faculty of Medicine, Catholic University of Leuven, Belgium.

Nutrition (Burbank, Los Angeles County, Calif.)
|September 18, 1997
PubMed
Summary

Prolonged cytokine production drives cachexia in cancer and infections. Multiple cytokines, not just tumor necrosis factor (TNF), work together to cause this severe metabolic breakdown.

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Area of Science:

  • Biomedical Science
  • Immunology
  • Oncology

Background:

  • Chronic inflammation and immune responses involve prolonged cytokine production.
  • Cachexia, characterized by weight loss and metabolic breakdown, is linked to these prolonged immune reactions.
  • Tumor necrosis factor (TNF) was initially implicated, but other cytokines are also crucial.

Purpose of the Study:

  • To review experimental evidence on the role of cytokines in cachexia pathogenesis.
  • To understand the complex interplay of cytokines in causing cachexia.
  • To explore potential therapeutic interventions targeting cytokines.

Main Methods:

  • Review of studies involving cytokine induction of cachexia in animal models.
  • Analysis of experiments using cytokine-producing cells or gene-modified tumor cells (e.g., TNF, IL-6, LIF, CNTF, IFN-gamma).
  • Examination of studies using cytokine antagonists to mitigate cachexia.

Main Results:

  • Cachexia can be induced in animals by repeated cytokine administration or inoculation with cytokine-producing cells.
  • Experimental models show that cachexia is rarely caused by a single cytokine but by a combination acting in concert.
  • Cytokine antagonists can mitigate cachexia in animal models, highlighting cytokine involvement.

Conclusions:

  • Cytokines are key players in the pathogenesis of cachexia associated with cancer and chronic infections.
  • Therapeutic strategies targeting multiple cytokines may be necessary for effective cachexia treatment.
  • Interventions like anticytokine antibodies require careful consideration due to potential immunosuppression and risks to infectious agents or tumors.

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