Targeting Specific Immunologic Pathways in Crohn's Disease

Understanding the immunologic pathways in intestinal inflammation is crucial for the development of new therapies that can maximize patient response and minimize toxicity. Targeting integrins and cytokines is intended to control leukocyte migration to effector sites or inhibit the action of proinflammatory cytokines. New approaches to preventing leukocyte migration may target integrin receptors expressed on the intestinal vascular endothelium. The IL-12/IL-23 pathway has been a therapeutic target of interest in controlling active Crohn disease (CD). New therapeutic approaches in CD may involve the enhancement of antiinflammatory cytokine pathways, and modulation of cellular responses and intranuclear signals associated with intestinal inflammation.