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Use of Animal Model of Sepsis to Evaluate Novel Herbal Therapies
07:34

Use of Animal Model of Sepsis to Evaluate Novel Herbal Therapies

Published on: April 11, 2012

Potential hazards of combination immunotherapy in the treatment of experimental septic shock

S M Opal1, A S Cross, J W Jhung

  • 1Brown University School of Medicine and Memorial Hospital, Providence, Rhode Island 02912, USA.

The Journal of Infectious Diseases
|June 1, 1996
PubMed

Insights

Combining anti-cytokine therapies like tumor necrosis factor binding protein (TNF-BP) and interleukin-1 receptor antagonist (IL-1ra) unexpectedly worsened outcomes in a Pseudomonas aeruginosa sepsis model, highlighting potential risks of combination immunotherapy.

Area of Science:

  • Immunology
  • Infectious Diseases
  • Pharmacology

Background:

  • Sepsis is a life-threatening condition often caused by bacterial infections.
  • Cytokines play a critical role in the inflammatory response during sepsis.
  • Targeting specific cytokines, such as TNF and IL-1, has been explored as a therapeutic strategy.

Purpose of the Study:

  • To evaluate the efficacy of a combination anticytokine therapy for sepsis.
  • To investigate the combined effect of tumor necrosis factor binding protein (TNF-BP) and interleukin-1 receptor antagonist (IL-1ra) in an experimental sepsis model.

Main Methods:

  • An infection model of Pseudomonas aeruginosa sepsis was established in neutropenic rats.
  • Animals were treated with IL-1ra alone, TNF-BP alone, or a combination of both.
  • Survival rates, bacteremia, endotoxemia, and the presence of microabscesses were assessed.

Main Results:

  • Both IL-1ra alone and TNF-BP alone demonstrated significant survival benefits compared to placebo.
  • The combination of IL-1ra and TNF-BP resulted in a uniformly fatal outcome, with significantly higher endotoxin and bacteremia levels.
  • Combination therapy led to disseminated microabscesses in major organs.

Conclusions:

  • Combination anticytokine therapy with IL-1ra and TNF-BP can exacerbate systemic infection and worsen outcomes in experimental sepsis.
  • The findings suggest that combining these specific anticytokine agents may be detrimental in treating sepsis.
  • Further research is needed to understand the complex interactions of combined immunotherapies in sepsis.

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