Assessment of Pulmonary Involvement inUlcerative Colitis by Induced Sputum

Twenty Ulcerative colitis patients and 20 control subjects (all nonsmokers) without respiratory symptoms will be tested. The induce sputum by 20' inhalation of 3.5% saline using ultrasonic nebulizer. Samples will studied by differential counts of 200 cells on cytopreps stained by Giemsa. T-lymphocyte subset analyses were done by FACS using three monoclonal antibodies: CD3 = total T cells, CD4 = T helper cells, and CD8 = T suppressor-cytotoxic cells. CD4/CD8 \>2.5 was considered abnormal.