The changes of serum IFN-gamma, TNF alpha and IL-10 levels in ulcerative colitis and its relevance to helicobacter pylori infection

Abstract

Objective To study the changes of serum IFN-gamma, TNF alpha and IL-10 levels in ulcera-tive colitis and its relevance to helicobacter pylori infection. Methods 80 UC patients were selected as the research object, and 50 cases of 80 patients were in the activity stage of UC,30 patients were in remission. In the 50 patients with active UC：14 cases were mild,26 cases were moderate, and 10 cases were severe.30 healthy subjects were set as healthy controls. Detection of serum IFN-gamma,TNF alpha, IL-10 levels and Hp infection were made. Results The serum TNF alpha and IL-10 levels of the activity group were higher than those of the remission group and the control group, the difference was statistically significant［TNF alpha:(54.75±5.92)ng／L vs.(23.69±4.15)ng／L vs.(20.45±4.01)ng／L,F＝36.79,P＝0.000;IL-10：（35.16±6.72)ng／L vs.(25.12±5.37)ng／L vs.(23.96± 5.21)ng／L,F＝35.68,P＝0.000］，the serum IFN-gamma level of the activity group was lower than those of the remission group and the control group, the difference were statistically significant［（14.98±3.15)ng／L vs.(26.06± 4.31)ng／L vs.(27.16±4.39)ng／L,F＝35.68,P＝0.000］. As the aggravating of patients with UC in activity stage, TNF alpha and IL-10 levels showed a trend of increase(F＝32.81,24.95,all P＜0.05), while IFN-gamma showed a trend of reduce(F＝22.29,P＜0.05).In 50 cases of active UC patients, 18 patients with Hp positive, 32 cases were Hp negative. In active UC group Hp positive patients'serum TNF alpha and IL-10 levels higher than the Hp negative patients, the difference was statistically significant(t＝4.62,4.35,all P＜0.01). Serum levels of IFN-gamma of active UC patients with Hp positive group was lower than the Hp negative patients, the difference was statistically significant(t＝5.91,P＜0.01). Conclusion In active UC patients expression of TNF alpha and IL-10 are high, and IFN-gamma expression is low. The expression of IFN-gamma, TNF alpha and IL-10 are closely related to Hp infection. Key words: Colitis，Ulcerative; Interferon gamma; Tumor necrosis factor alpha; Interleukin 10; Helicobacter pylori