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Mediators of multiple organ failure
1Department of General Surgery, University Hospital St. Radboud, Nijmegen, The Netherlands.
Abstract:
Multiple Organ Failure (MOF) has largely been attributed to bacterial sepsis, though conclusive evidence of an essential role for bacteria and/or their endotoxins is still lacking. On the other hand, MOF and the clinical syndrome of sepsis may be aseptically induced in germ-free animals. This paper reviews the evidence that excessive activation of endogenous humoral mediators and inflammatory cells may cause this highly lethal syndrome.
Insights
Multiple Organ Failure (MOF) may not require bacteria to develop. This review explores how the body's own inflammatory responses, rather than infection, might cause MOF and sepsis.
Area of Science:
- Immunology
- Pathophysiology
- Critical Care Medicine
Background:
- Multiple Organ Failure (MOF) is often linked to bacterial sepsis.
- Conclusive evidence for bacteria or endotoxins as the sole cause of MOF is lacking.
- MOF and sepsis can be induced aseptically in germ-free animal models.
Purpose of the Study:
- To review evidence suggesting endogenous factors contribute to MOF.
- To explore the role of inflammatory mediators and cells in MOF pathogenesis.
- To challenge the traditional view of bacterial sepsis as the primary cause of MOF.
Main Methods:
- Literature review of existing studies on MOF and sepsis.
- Analysis of evidence from germ-free animal models.
- Examination of the role of endogenous humoral mediators and inflammatory cells.
Main Results:
- Aseptic induction of MOF and sepsis is possible in germ-free animals.
- Excessive activation of endogenous inflammatory pathways is implicated in MOF.
- The findings question the exclusive role of bacterial sepsis in MOF.
Conclusions:
- MOF may arise from endogenous inflammatory processes independent of bacterial infection.
- Further research into non-bacterial pathways of MOF is warranted.
- Understanding these mechanisms could lead to novel therapeutic strategies for critical illness.