1. Non-Sensitizing Epicutaneous Skin Tests Prevent Subsequent Induction of Immune Tolerance.
- Author
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van Hoogstraten, Ingrid M. W., von Blomberg, B. Mary E., Boden, Dagmar, Kraal, Georg, and Scheper, Rik J.
- Subjects
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IMMUNOLOGICAL tolerance , *NICKEL , *CHROMIUM , *GUINEA pigs , *CONTACT dermatitis , *DELAYED hypersensitivity , *SKIN inflammation , *ALLERGIES - Abstract
Oral administration of nickel or chromium to naive guinea pigs results in immune unresponsiveness to subsequent induction of allergic contact hypersensitivity. Such "oral tolerance" depends on the oral dose, is antigen specific, T-suppressor-cell mediated, and very persistent. In contrast, oral antigen administration to sensitized animals results at best in transient desensitization. Here we report that even non-sensitizing epicutaneous skin contacts prevented the subsequent induction of oral tolerance. These data support the view that primed T cells are less sensitive to suppressor T-cell function than naive T cells. [ABSTRACT FROM AUTHOR]
- Published
- 1994
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