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E-selectin expression in experimental models of inflammation in mice
U Henseleit1, K Steinbrink, M Goebeler
1Institute of Experimental Dermatology Freiburg, Germany.
The Journal of Pathology
|November 1, 1996
Summary
Murine E-selectin expression, induced by LPS and TNF-alpha, correlates with inflammatory response intensity in contact dermatitis models. This study reveals key regulatory mechanisms in vivo and in vitro.
Area of Science:
- Immunology
- Cell Biology
Background:
- E-selectin (CD62E) is a cytokine-inducible adhesion molecule mediating leukocyte binding.
- Understanding its expression and regulation is crucial for inflammatory disease research.
Purpose of the Study:
- To investigate the expression and regulation of murine E-selectin in vitro and in vivo.
- To analyze temporal E-selectin expression in murine models of allergic and irritant contact dermatitis (ACD and ICD).
- To correlate E-selectin expression with genetically determined inflammatory response intensity.
Main Methods:
- Utilized a monoclonal antibody (21KC10) for immunohistochemical analysis of murine E-selectin.
- Studied E-selectin induction by LPS, TNF-alpha, IL-4, and IFN-gamma in vitro and in vivo.
- Employed murine models of ACD and ICD to analyze temporal and strain-dependent expression.
Main Results:
- LPS and TNF-alpha, but not IL-4 or IFN-gamma, transiently induced E-selectin expression in vitro and in vivo.
- E-selectin was expressed on vascular endothelium in both ACD and ICD models, with earlier peak expression in ICD.
- BALB/c mice showed more pronounced and prolonged E-selectin expression than C57BI/6 mice, correlating with inflammatory infiltrate density.
Conclusions:
- Murine E-selectin expression is regulated by specific cytokines and is induced during contact dermatitis.
- E-selectin expression levels correlate with the genetic predisposition to intense inflammatory responses.
- This study elucidates regulatory mechanisms and highlights E-selectin's role in inflammation intensity.