Related Experiment Videos
[Infection without infection focus--clinical relevance of bacterial translocation]
1Chirurgische Klinik I, Universität Ulm.
Abstract:
The passage of bacteria, fungi, and bacterial products through the gut wall, which is called microbial translocation, is an experimentally well-defined process occurring during burn injury, multiple trauma, and septic diseases. The translocation of viable bacteria could be demonstrated in humans as a sporadic event, but despite accumulating evidence the clinical relevance remains to be elucidated. The same fact is true for the translocation of bacterial products such as endotoxin. Although a large body of evidence supports the hypothesis that endotoxin of gut origin may play a pathophysiologically important role, general acceptance is still lacking because some clinical studies provide disappointing results due to unrecognized methodological problems.
Insights
Microbial translocation, the movement of gut microbes and their products through the intestinal wall, occurs in critical illnesses. Its clinical significance, particularly for endotoxin, requires further investigation despite strong evidence.
Area of Science:
- Microbiology
- Immunology
- Pathophysiology
Context:
- Microbial translocation is a known process during severe physiological stress like burns, trauma, and sepsis.
- The passage of bacteria, fungi, and bacterial products across the gut barrier is experimentally validated.
- While sporadic in humans, the clinical relevance of viable bacterial translocation is not fully understood.
Purpose:
- To review the current understanding of microbial translocation in critical illness.
- To discuss the role of bacterial products, specifically endotoxin, in disease pathogenesis.
- To highlight the challenges and limitations in clinical studies investigating microbial translocation.
Summary:
- Microbial translocation involves the movement of gut microorganisms and their components through the intestinal wall.
- Evidence suggests endotoxin from gut bacteria may be a significant factor in disease progression.
- Methodological issues in clinical studies have hindered the general acceptance of endotoxin's role.
Impact:
- Clarifies the complex role of the gut microbiome in critical care settings.
- Identifies knowledge gaps and methodological challenges in studying microbial translocation.
- Provides a foundation for future research into therapeutic strategies targeting the gut barrier and microbial products.