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Injection of Escherichia coli to Induce Sepsis
Xian-Hui He1, Dong-Yun Ouyang2, Li-Hui Xu3
1Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, China. thexh@jnu.edu.cn.
Abstract:
Mouse models of bacterial sepsis are widely used in research to investigate the underlying molecular mechanisms of sepsis and to develop clinically useful therapeutic regimens. Three commonly used mouse sepsis models include (a) injection of bacterial endotoxin, (b) infusion of cultured bacteria, and (c) cecal ligation and puncture. Here we describe the induction of bacterial sepsis in mice by intraperitoneal injection of cultured live Escherichia coli cells. The severity of the sepsis can be regulated by the number of E. coli cells injected into the peritoneal cavity of mice.
Insights
Researchers developed a reproducible mouse model for bacterial sepsis using live Escherichia coli. Sepsis severity in this model can be controlled by adjusting the injected bacterial dose, aiding sepsis research.
Area of Science:
- Microbiology
- Immunology
- Pathology
Background:
- Bacterial sepsis is a life-threatening condition requiring effective research models.
- Existing mouse models for sepsis include endotoxin injection, bacterial infusion, and cecal ligation and puncture.
Purpose of the Study:
- To describe a reproducible method for inducing bacterial sepsis in mice using live Escherichia coli.
- To establish a controllable sepsis model for investigating disease mechanisms and testing therapeutics.
Main Methods:
- Induction of sepsis via intraperitoneal injection of cultured live Escherichia coli in mice.
- Titration of bacterial dose to modulate sepsis severity.
Main Results:
- Successfully induced bacterial sepsis in a mouse model.
- Demonstrated that the number of injected Escherichia coli cells directly correlates with sepsis severity.
- Established a reproducible and controllable model for sepsis research.
Conclusions:
- Intraperitoneal injection of live Escherichia coli provides a versatile and controllable mouse model for bacterial sepsis research.
- This model facilitates the study of sepsis pathogenesis and the evaluation of novel therapeutic strategies.
