Related Experiment Videos
Lethal effect of polymyxin B sulfate in experimental Proteus rettgeri infection in mice
Canadian Journal of Microbiology
|February 1, 1980
Abstract:
The mouse model of intraperitoneal sepsis with Proteus rettgeri was used to evaluate the anti-endotoxic effect of polymyxin B sulfate. An unexpected reversal of the usual protective effect of polymyxin in experimental enterobacterial sepsis was observed in which the lethality of the infection was enhanced.
Insights
Polymyxin B sulfate unexpectedly enhanced lethality in a mouse model of Proteus rettgeri sepsis. This study investigated the anti-endotoxic effects, revealing a reversal of its typical protective action against enterobacterial infections.
Area of Science:
- Microbiology
- Pharmacology
- Immunology
Background:
- Polymyxin B sulfate is known for its anti-endotoxic properties.
- Sepsis remains a significant global health challenge, often caused by Gram-negative bacteria.
Purpose of the Study:
- To evaluate the anti-endotoxic effect of polymyxin B sulfate.
- To investigate its efficacy in a mouse model of Proteus rettgeri-induced sepsis.
Main Methods:
- Intraperitoneal sepsis model established in mice using Proteus rettgeri.
- Administration of polymyxin B sulfate to assess its therapeutic effect.
Main Results:
- An unexpected reversal of polymyxin B sulfate's protective effect was observed.
- The treatment enhanced the lethality of experimental enterobacterial sepsis.
Conclusions:
- Polymyxin B sulfate demonstrated an adverse effect, increasing mortality in this specific sepsis model.
- Further research is needed to understand the mechanisms behind this reversed efficacy.