Determination of cytokine profile and fecal calprotectin in patients with inflammatory bowel disease of different activity degree

Aim: To determine the IL-6, IL-8, TNF-α and fecal calprotectin levels in different phases of the disease and correlate their values with the clinical and endoscopic data in patients with inflammatory bowel diseases.
Methods: 41 patients with IBD were selected: 78% with ulcerative colitis and 22% with Crohn's disease, 39% women and 61% men, mean age 35,3±1,9. Ulcerative colitis: acute current – 12,5%, chronic continuous – 6,25%, chronic relapsing – 62,5%, rarely relapsing – 12,5%, often relapsing – 6,25%. Minimal activity – 15,6%, moderate activity – 84,4%. Crohn's disease depending on the Crohn's Disease Activity Index (CDAI): mild disease and minimal activity – 55,6%, moderate severity and moderate activity – 44,4%.
Results: IL-6 was increased to 20,56±5,51 pg/ml at ulcerative colitis, to 18,64±4,70 pg/ml at Crohn's disease; IL-8 – 79,38±15,37 pg/ml at ulcerative colitis and 82,49±34,81 pg/ml at Crohn's disease; TNF-α – 28,70±3,24 pg/ml and 32,32±6,92 pg/ml, respectively. Depending on the extent of the lesion: for IL-6 at E2 – 23,91±14,64 pg/ml and at E3 – 20,54±5,61 pg/ml; for IL-8 at E2 – 60,95±14,60 pg/ml and at E3 – 97,31±24,10 pg/ml.
Conclusion: The results of the study have demonstrated an increase in the concentrations of IL-6, IL-8 and TNF-α in patients with ulcerative colitis and Crohn's disease, significantly exceeding the reference values. With increased activity of the inflammatory process, a significant raise in IL-6, IL-8 and TNF-α level was observed. Determining the level of fecal calprotectin depending on the location of the lesion and the activity of the process confirmed its importance in assessing the extent of lesions of the colon and diagnosing the activity of ulcerative colitis and Crohn's disease in different phases of the disease.