THE EFFECTS OF ANTIHISTAMINES BEYOND H1 ANTAGONISM IN ALLERGIC INFLAMMATION

[摘要] Antigen and cold dry air were used to challenge the upper and lower airways, skin, and conjunctiva. In each of these four systems an immediate and late-phase reaction to antigen is well characterized. Although the pattern of mediator release is different in these four areas, the degree of infiltration of basophils and eosinophils in the late-phase reaction appears to be constant. Of a number of drugs that can influence these mediators and cell responses, the steroids represent a typical mode of action. Steroids block the late-phase response and ablate the eosinophil and basophil infiltration. Although the effects of antihistamines appear to be similar, they do not appear to be caused by H1 antagonism; the mechanism of their action is unknown. This discussion will focus on these non-H1 antagonist effects of antihistamines in four challenge models, particularly the upper airways and skin.

[发布日期] 1990-12-01