溃疡性结肠炎患者相关细胞因子的实验性研究

目的:研究溃疡性结肠炎患者TNF-a,IL-6,sIL-2R等因子在其发病机理中的作用。方法:分别采用双抗体放射免疫法和酶联免疫吸附试验(ELISA法)检测活动期溃疡性结肠炎患者25例及对照组血清TNF-a,IL-6,sIL-2R的水平。分别比较活动期溃疡性结肠炎患者与缓解期、正常对照组的TNF-a等细胞因子血清水平的差异;比较缓解期患者与正常对照组的差异;比较重度溃疡性结肠炎患者与轻、中度患者血清TNF-a等细胞因子水平的差异。并观测TNT-a与IL-6之间的相关性。结果:活动期溃疡性结肠炎患者血清TNF-a,IL-6,sIL-2R水平明显高于缓解期和正常对照组(P<0·05);缓解期患者血清TNF-a,IL-6,sIL-2R水平与正常对照组相比差异无统计学意义(P>0·05);重度溃疡性结肠炎患者血清TNF-a,IL-6,sIL-2R水平高于轻、中度组(P<0·05);活动期溃疡性结肠炎患者血清TNF-a与IL-6水平呈正相关(r=0·8476,P<0·05)。结论:活动期溃疡性结肠炎患者存在严重的细胞免疫功能紊乱;TNF-a,IL-6,sIL-2R等在溃疡性结肠炎的发生和病情发展中起着重要作用;测定血清TNF-a,IL-6,sIL-2R水平可反映溃疡性结肠炎的病情变化,并可作为观察疗效和判断预后的生物学指标之一。

THE EXPERIMENTAL STUDY OF THE RELATED CYTOKINES FOR IN PATIENTS WITH ULCERATIVE COLITIS

Objective:To investigate the action of TNF-a,IL-6 and sIL-2R in the mechanism of ulcerative colitis.Methods:Bi-antibody radioimmune methods and ELISA methods were used to analysis the samples in TNF-a,IL-6 and sIL-2R of 25 cases with active ulcerative colitis.30 normal persons were assigned as the contrast group.The data of cytokines(TNF-a,IL-6,sIL-2R)among contrast group,the active and catabolic phases of ulcerative colitis were compared.That in catabolic phases of ulcerative colitis was also compared with that in contrast group,the difference were compared among slight,moderate and severe groups,The relativity among the serum level in TNF-a,IL-6 of active ulcerative colitis had been observed.Results:The level of serum TNF-a,IL-6 and sIL-2R in active ulcerative colitis was much more higher than catabolic ulcerative colitis and contrast group(P<0.05).The level had no significant difference between catabolic ulcerative colitis and contrast group(P>0.005).The level in severe group is higher than that in moderate and slight group(P<0.05).Serum cytokines,TNF-a and IL-6 are positively related to active ulcerative colitis.(r=0.8476,P<0.05).Conclusion:There is a severe disorders of cellular immunity in the patients with active ulcerative colitis.TNF-a,IL-6,sIL-2R etc play the very important roles in the genesis and development of ulcerative colitis.The serum level of the above cytokines not only reflected the development of ulcerative colitis but also could be used as biological index of the effect and estimate the prognosis.