Abstract
To investigate the effect of secondary lymphoid tissue chemokine (SLC) on experimental colon lesions in rats with ulcerative colitis. Sixty Sprague-Dawley rats were randomly divided into control group, model group and SLC intervention group. Colonic mucosal lesions of different groups were observed with HE staining for inflammation and lymphocyte homing situation. Cytokine IL-2 and IL-6 levels were measured by ABC-ELISA. Semi-quantitative RT-PCR was used to examine the colonic SLC expression. Intestinal inflammation score and colonic cytokine levels were significantly different among three groups (P<0.05, P<0.01). Abnormal lymphocyte homing phenomenon under colonic mucosa was found in the model group and the intervention group. SLC mRNA expression of the model and intervention groups increased significantly compared with the control group (0.846+/-0.047, 0.768+/-0.135 vs 0.312+/-0.112, P<0.01). However, there was no significant difference between model group and intervention group. SLC may play an important role in experimental colonic mucosal inflammation in rats with ulcerative colitis. Blockade of SLC may be one of effective ways in reducing colonic mucosal inflammation.
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