Drug therapy for inflammatory bowel disease: Part II

Abstract

Part II of this two-part article (See The American Journal of Surgery 1992; 164: 85-9) reviews the current definition of the role of immunosuppressive therapy in inflammatory bowel disease (IBD) and the use of antibiotics in IBD, as well as summarizes the uses of the new agents on the horizon for the treatment of IBD. Azathioprine and 6-mercaptopurine have steroid-sparing effects in patients with refractory Crohn's disease and ulcerative colitis, treat Crohn's disease-associated fistulas, and are the first agents to demonstrate efficacy in the prophylaxis of Crohn's disease. Their low risk for the development of lymphoreticular malignancy remains a factor in decisions regarding their long-term use. Cyclosporine is steroid sparing in active chronic Crohn's disease and, given intravenously, may help treat severe, refractory ulcerative colitis. Antibiotics have expanding roles: metronidazole is effective for the primary treatment of Crohn's disease, fistulas, abscess, bacterial overgrowth, and pouchitis (after ileoanal anastomosis). Other potential agents show promise in pilot studies but await controlled trials.