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Splenectomy influences endotoxin-induced bacterial translocation
G Spaeth1, R D Specian, R D Berg
1Department of Surgery, University of Tübingen, F.R.G.
The Journal of Trauma
|October 1, 1990
Summary
Splenectomy, the surgical removal of the spleen, does not increase bacterial translocation from the gut. However, it significantly enhances resistance to endotoxin-induced bacterial translocation in mice.
Area of Science:
- Immunology
- Gastroenterology
- Surgical Research
Background:
- The spleen plays a role in immune responses.
- Bacterial translocation (BT) indicates intestinal barrier dysfunction.
- The effect of splenectomy on gut immunity is not fully understood.
Purpose of the Study:
- To investigate if splenectomy impacts gut antibacterial defenses.
- To assess bacterial translocation (BT) as a marker of intestinal barrier failure post-splenectomy.
- To determine if splenectomy alters resistance to endotoxin-induced BT.
Main Methods:
- Mice underwent splenectomy or sham-splenectomy.
- Bacterial translocation (BT) incidence was measured 8 days post-surgery.
- Mice were challenged with or without endotoxin (0.1 mg IP).
- Incidence of endotoxin-induced BT was compared between splenectomized, sham-splenectomized, and control groups.
Main Results:
- Splenectomy did not increase the incidence of spontaneous bacterial translocation (BT) compared to sham-splenectomy.
- The incidence of endotoxin-induced BT was significantly lower in splenectomized mice (23%) compared to unoperated controls (73%) and sham-splenectomized mice (59%).
- The difference in endotoxin-induced BT incidence was statistically significant (p < 0.002).
Conclusions:
- Splenectomy does not compromise the gut barrier function as indicated by bacterial translocation.
- Splenectomy enhances resistance to endotoxin-induced bacterial translocation in otherwise healthy mice.
- These findings suggest a protective role of splenectomy against endotoxin-mediated intestinal barrier failure.