title: Chronic inflammatory bowel disease, deep-venous thrombosis and antithrombin activity.
abstract: Of 34 patients with chronic inflammatory bowel disease (CIBD), 4 developed well-documented episodes of deep-venous thrombosis. All 4 patients had active disease at the time of thrombosis. This group was studied to determine if the tendency to deep-venous thrombosis in patients with CIBD was associated with reduced antithrombin activity by measuring the concentration of three thrombin inhibitors, antithrombin III (AT III), alpha 2-macroglobulin (alpha 2 M) and alpha 1-antitrypsin. 2 patients had low AT III levels and 10 had low alpha 2 M levels. 2 patients who developed deep-venous thrombosis had significantly low levels of both AT III and alpha 2 M. It is suggested that in patients with diseases predisposing to thrombosis and associated with low AT III levels, the measurement of alpha 2 M in addition to AT III may predict those particularly at risk.
mesh_terms: D000990:Antithrombin III / Q000032:analysis*; D003093:Colitis, Ulcerative / Q000097:blood* / Q000150:complications; D003424:Crohn Disease / Q000097:blood* / Q000150:complications; D006801:Humans; D008111:Liver Function Tests; D013924:Thrombophlebitis / Q000097:blood* / Q000150:complications; D000515:alpha 1-Antitrypsin / Q000032:analysis; D000511:alpha-Macroglobulins / Q000032:analysis
chemical_list: D000515:alpha 1-Antitrypsin; D000511:alpha-Macroglobulins; D000990:Antithrombin III