Activation of plasma contact and coagulation systems and neutrophils in the active phase of ulcerative colitis.

Publication/Presentation Date

11-1-1997

Abstract

We have shown that the contact (kallikrein-kinin) system is involved in the pathogenesis of experimental enterocolitis. We now investigate activation of the contact and coagulation pathways, platelets, and neutrophils in active and inactive ulcerative colitis patients as compared to normal controls. In active ulcerative colitis patients, a significant decrease of plasma prekallikrein, high molecular weight kininogen, and C1 inhibitor levels was observed as compared with controls, as well as prekallikrein activation on western blots. Significant elevation of prothrombin fragment (F1 + 2), which indicates thrombin generation, and elastase-alpha 1-antitrypsin complexes, reflecting neutrophil activation, were found in patients with active disease. Plasma beta-thromboglobulin, a marker of platelet activation, was elevated in both active and inactive disease and appears to be a feature of ulcerative colitis. Activation of contact and coagulation pathways, as well as neutrophils, may mediate inflammation in the active phase of ulcerative colitis.

Volume

42

Issue

11

First Page

2356

Last Page

2366

ISSN

0163-2116

Disciplines

Medicine and Health Sciences

PubMedID

9398817

Department(s)

Department of Medicine

Document Type

Article

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