简介：
Overview
This protocol provides the necessary steps to establish and evaluate neonatal sepsis in 7-day-old mice. It details the preparation of a cecal slurry model for studying polymicrobial sepsis.
Key Study Components
Area of Science
- Neonatal sepsis
- Polymicrobial infection models
- Mouse models in biomedical research
Background
- The cecal slurry model is used to investigate neonatal pathophysiology.
- Humane endpoints in sepsis research are not well defined.
- Standardized procedures are crucial for reproducibility.
- Data-driven approaches help identify moribund pups early.
Purpose of Study
- To establish a reliable method for inducing sepsis in neonatal mice.
- To evaluate the effects of cecal slurry on neonatal health.
- To provide a protocol that minimizes variability in experimental outcomes.
Methods Used
- Preparation of cecal slurry from adult mice.
- Standardized injection protocols for neonatal mice.
- Use of sterile techniques to prevent contamination.
- Data analysis for determining lethal doses and outcomes.
Main Results
- Successful preparation of cecal slurry with consistent aerobic colony forming units.
- Establishment of a dose-dependent lethality in neonatal mice.
- Identification of moribund pups using a data-driven approach.
- Protocol allows for reproducible results across experiments.
Conclusions
- The cecal slurry model is effective for studying neonatal sepsis.
- Standardized methods enhance the reliability of research findings.
- Future studies can build on this protocol to explore neonatal health.
What is the cecal slurry model?
The cecal slurry model is a method used to induce polymicrobial sepsis in experimental animals, particularly neonatal mice.
How is the cecal slurry prepared?
Cecal contents are pooled from adult mice, suspended in sterile dextrose water, and stored for later use.
What are the humane endpoints in this study?
Humane endpoints involve identifying moribund pups early to minimize suffering during experiments.
How do you determine the lethal dose for the slurry?
The lethal dose is determined through dose titration experiments for each new stock of cecal slurry.
What tools are necessary for the procedure?
Sterile dissection tools, centrifuge tubes, and a biological safety cabinet are essential for the procedure.
Can the cecal slurry be stored?
Yes, aliquots of cecal slurry can be stored at minus 80 degrees Celsius without losing aerobic colony forming units for up to six months.
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