[Changes of colonic permeability and its correlation with TNF-α, NF-κB p65 in ulceration colitis mice]

To study the changes of colonic permeability and its correlation with TNF-α, NF-κB p65 in indextran sulphate sodium (DSS) -induced ulcerative colitis(UC) of mice.

Forty-eight ICR mice were randomly divided into the control group and the model group. The acute UC model was induced by quantified intragastric administration of 2.5% DSS in mice. The disease activity index(DAI), histopathology scores, colonic permeability, expression of TNF-α, NF-κB p65 in colonic tissue were determined. The change of colonic permeability and its correlation with DAI, TNF-α, NF-κB p65 were analyzed.

Compareded with the control group, DAI colonic permeability of colonic tissue,and the expression of TNF-α NF-κB p65 in the model group were increased significantly (P<0.01, P<0.01). The increased colonic permeability correlated with DAI (P<0.01), and the expression of TNF-α(P<0.01), NF-κB p65(P<0.01) changed significantly.

The alteration of colonic permeability and increased expression of TNF-α, NF-κB p65 may play important roles in the occurrence and development of UC.