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Updated: Jul 14, 2026
05:56
A Reproducible Intensive Care Unit-Oriented Endotoxin Model in Rats
Published on: February 20, 2021
Chronic sepsis mortality characterized by an individualized inflammatory response
Marcin F Osuchowski1, Kathy Welch, Huan Yang
1Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
Journal of Immunology (Baltimore, Md. : 1950)
|June 21, 2007
Summary
Late sepsis deaths are preceded by distinct inflammatory marker changes. Identifying these biomarkers can help predict mortality and guide personalized sepsis treatments.
Area of Science:
- Immunology
- Critical Care Medicine
- Pathophysiology
Background:
- Late mortality in sepsis surpasses acute phase lethality.
- Immunoinflammatory changes during chronic sepsis remain poorly understood.
Purpose of the Study:
- To define plasma cytokine profiles preceding late septic deaths.
- To identify predictive biomarkers for chronic sepsis mortality.
Main Methods:
- A murine model of polymicrobial peritonitis-induced sepsis was utilized.
- Plasma cytokine concentrations were measured in mice from day 6 to 28 post-induction.
- Concentrations were compared between mice that died late and survivors.
Main Results:
- Late prelethal inflammatory responses were heterogeneous.
- Key biomarkers like MIP-2, MCP-1, soluble TNF receptor type I, and IL-1 receptor antagonist showed significant pre-death surges.
- Decreased high mobility group box 1 levels signaled late mortality.
- Interleukin-6 and Interleukin-10 increases were infrequent.
Conclusions:
- Plasma biomarkers can predict mortality in the chronic phase of sepsis.
- These findings provide a mechanistic basis for individualized sepsis therapy.
- The transition from systemic inflammatory response syndrome to compensatory anti-inflammatory response syndrome is not linear.
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