Zusammenfassung
Aufgrund von Literaturangaben und eigener experimenteller Arbeit wird der Entstehungsmechanismus des experimentellen Kontaktekzems wie folgt dargestellt:
Spezifische antigen-reaktive T-Lymphocyten werden durch einen antigenen Komplex, welcher durch Applikation des Haptens auf die Haut gebildet wird, stimuliert. Dabei spielen die Langerhans-Zellen in der Haut eine ausschlaggebende Rolle.
Aktivierte Lymphocyten proliferieren in der Thymus-abhängigen Zone des regionalen Lymph knotens, wodurch Effektor- und Memoryzellen entstehen. Nach einem wiederholten Kontakt mit dem Hapten setzen die Effektorzellen Mediatoren frei, die eine Entzündungsreaktion induzieren. Aus den Memoryzellen bilden sich weitere Effektorzellen, die den Kontaktüberempfindlichkeits- grad verstärken (booster effect).
Summary
On the basis of literature and experimental work the mechanism of the development of experimental allergic dermatitis is reviewed.
Specific antigen-reactive T-lymphocytes are stimulated by the antigenic complex formed upon the application of the hapten to the skin. Langerhans cells in the skin play in this process a decisive role. Activated lymphocytes proliferate in thymus dependent area of the draining lymphnode and differentiate into effector and memory cells. The former react to a repeated application of the hapten with release of mediators inducing an inflammatory skin reaction. The latter produce further effector cells thus enhancing the degree of contact sensitivity (booster effect).
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Polak, L. (1987). Neue Erkenntnisse über die Pathogenese des allergischen Kontaktekzems. In: Hornstein, O.P., Hundeiker, M., Schönfeld, J. (eds) Neue Entwicklungen in der Dermatologie. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-72828-0_5
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