Effects of Platelet Activating Factor on Eicosanoid Release in Endotoxic Shock
Author Information
Author(s): T. Mbzes, F. J. Zijlstra, J. P. C. Heiligers
Primary Institution: Semmelweis Medical University, Peterfy Hospital; Erasmus University Rotterdam
Hypothesis
An intimate relationship between platelet activating factor (PAF) and eicosanoids may exist in endotoxic shock.
Conclusion
PAF stimulates the release of thromboxane, and its receptor antagonism has a major effect on thromboxane production during endotoxic shock.
Supporting Evidence
- Fifteen of the 31 animals infused with LPS died within 30 minutes.
- Survivors showed a significant increase in eicosanoid concentrations.
- BN 52021 treatment did not affect survival rates but improved circulatory parameters in survivors.
Takeaway
In sick pigs, a substance called PAF affects other chemicals that help control blood pressure during a serious infection, but it doesn't seem to cause early death.
Methodology
Anaesthetized pigs were infused with Escherichia coli endotoxin, and plasma levels of mediators were measured.
Limitations
The study was conducted on a specific animal model, which may not fully represent human responses.
Participant Demographics
Young female Yorkshire pigs, body weight: 20-24 kg, age: 12-16 weeks.
Statistical Information
P-Value
0.05
Statistical Significance
p<0.05
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