Asthma is an inflammatory disease that involves mast cells, antigen-pr
esenting cells, eosinophils, neutrophils, and TH2-lymphocytes. These c
ells produce a broad array of mediators and cytokines that lead to the
bronchoconstriction, mucosal edema, mucus secretion, and bronchial hy
perresponsiveness that characterize asthma. Current guidelines for the
rapy recommend that all patients whose asthma is more severe than mild
intermittent receive chronic treatment with drugs that interrupt this
inflammatory cascade. Corticosteroids have been the gold standard for
treatment, but a greater understanding of the specific cells and medi
ators involved in the pathogenesis of asthma has led to more focused,
specific therapy. Pharmacologic agents that interrupt the synthesis of
action of leukotrienes, and monoclonal antibodies directed against in
tracellular adhesion molecules or immunoglobulin E are examples of the
new generation of specific targeted therapy for use in asthma. Journa
l of Clinical Pharmacology, 1998;38:577-582 (C)1998 The American Colle
ge of Clinical Pharmacology.