Related Experiment Video
Updated: Aug 19, 2026
Rat Burn Model to Study Full-Thickness Cutaneous Thermal Burn and Infection
Published on: August 23, 2022
[Experimental study on the relationship between burn shock and infection]
Abstract:
It is well known that burned patients with difficulty in passing through the shock stage are commonly complicated by early septicemia. But explanations about the mechanism vary and no one can account for all the cases. In the present study, Specific Pathogen-free mice (950), Germfree mice (50) and Wistar rats (720) were used in studying 25%-30% burn injury; limited time of hypotension; endotoxemia and simple intestinal obstruction to determine if the bacteria could translocate across the viable intestinal wall to cause systemic infection. The data showed that microflora from gut can cause systemic infection following early burn injury; and shock, endotoxemia and ileus which always complicate severe burns can function together in promoting bacteria translocation. These results suggest that gut origin infection may play an important role in irreversible burn shock and/or early fulminating septicemia following burn injury.
Insights
Early burn injury can lead to systemic infections as gut bacteria translocate across the intestinal wall. This translocation is promoted by burn shock, endotoxemia, and ileus, contributing to severe burn complications.
Area of Science:
- Medical Microbiology
- Surgical Pathology
- Immunology
Context:
- Severe burn injuries often lead to systemic complications like septicemia.
- The precise mechanisms underlying early septicemia in burn patients remain incompletely understood.
- Existing explanations for burn-related septicemia do not account for all observed cases.
Purpose:
- To investigate bacterial translocation across the viable intestinal wall following burn injury.
- To determine the role of gut microflora in causing systemic infection post-burn.
- To elucidate the contribution of shock, endotoxemia, and intestinal obstruction to bacterial translocation.
Summary:
- Specific Pathogen-free mice, Germfree mice, and Wistar rats underwent 25%-30% burn injury.
- Experimental models included limited hypotension, endotoxemia, and simple intestinal obstruction.
- Data indicated that gut microflora can cause systemic infection after early burn injury.
- Shock, endotoxemia, and ileus were found to promote bacterial translocation in burn patients.
Impact:
- Findings suggest gut origin infection plays a significant role in irreversible burn shock.
- This research highlights the importance of gut-derived infections in early fulminating septicemia post-burn.
- Understanding bacterial translocation may lead to novel therapeutic strategies for burn patients.
