Role of glucocorticoids in neutrophil and endothelial adhesion molecule expression and function
Author Information
Author(s): Kevin D. Forsyth, Vivienne Talbot
Primary Institution: Department of Immunology, Princess Margaret Hospital for Children
Hypothesis
Glucocorticoids inhibit neutrophil adhesion to endothelium by down-regulating adhesion molecules on neutrophils or endothelium.
Conclusion
Dexamethasone has no discernible effect on neutrophil adhesion to endothelium or on the expression of adhesion molecules.
Supporting Evidence
- Dexamethasone did not alter neutrophil adhesion to either stimulated or unstimulated endothelium.
- Endothelial cells pretreated with dexamethasone showed no change in adhesion molecule expression after LPS stimulation.
- Dexamethasone was unable to inhibit the increase in neutrophil adherence induced by LPS.
Takeaway
This study looked at how a medicine called dexamethasone affects the way certain white blood cells stick to blood vessel walls, but it found that it doesn't change that sticking at all.
Methodology
Endothelial cells were cultured and stimulated with LPS, and neutrophil adhesion was assessed using an alkaline phosphatase method.
Limitations
The study did not explore all potential mechanisms of glucocorticoid action on inflammation.
Statistical Information
Statistical Significance
p<0.05
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