TITLE

Clinical Relevance of Serum Interleukin-6 in Crohn's Disease: Single Point Measurements, Therapy Monitoring, and Prediction of Clinical Relapse

AUTHOR(S)
Reinisch, Walter; Gasché, Christoph; Tillinger, Wolfgang; Wyatt, John; Lichtenberger, Cornelia; Willheim, Martin; Dejaco, Clemens; Waldhör, Thomas; Bakos, Silvia; Vogelsang, Harald; Gangl, Alfred; Lochs, Herbert
PUB. DATE
August 1999
SOURCE
American Journal of Gastroenterology;Aug1999, Vol. 94 Issue 8, p2156
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
OBJECTIVE: To investigate the clinical relevance of interleukin- 6 (IL-6) serum levels in patients with Crohn's disease (CD), single point IL-6 measurements in sera from consecutive CD patients and healthy donors (HD), as well as longitudinal measurements during the course of steroid therapy for active CD were performed. Patients with steroid-induced remission were followed until clinical relapse. METHODS: One hundred thirty-six CD patients without steroid or other immunosuppressive treatment within 2 months and surgical procedures within 3 months before study entry were investigated; 63 patients with active CD were enrolled into the follow-up program. Clinical activity was evaluated by the Crohn's disease activity index (CDAI) and serum IL-6 levels measured by enzyme-linked immunosorbent assay. RESULTS: IL-6 serum levels were significantly elevated in CD patients compared to HD (p < 0.001). In individual patients serum IL-6 levels correlated with corresponding CDAI scores in a subgroup referred to as primarily inflammatory patients presenting without bowel stenosis, previous intestinal resection, or concomitant inflammatory disorders (r = 0.72, p < 0.001). Primarily inflammatory patients displayed higher serum IL-6 levels (median: 6.0 pg/ml; range: 1.3-25) than CD patients with bowel stenosis (median: 2.0; range: 1.3-4.9; p < 0.01) or extensive intestinal resection (median: 1.5; range: 1.3-13.7; p < 0.001). Longitudinally measured serum IL-6 levels reflected the clinical response during steroid therapy and predicted clinical relapse after steroid-induced remission at week 9 of the treatment protocol. CONCLUSIONS: Serum IL-6 is a clinically relevant parameter for CD that correlates with inflammatory activity and implies a prognostic value after steroid-induced remission.
ACCESSION #
17830745

 

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