Recent studies have revealed that calorie restriction is able to modulate immune system and aid in intervention of immune disorders. Inflammatory bowel disease (IBD) is an immune disease in the intestine caused by interplay between genetic susceptibility and environmental factors such as diets. Here we analyzed the therapeutic effect of intermittent calorie restriction with a fasting-mimicking diet (FMD) on dextran sodium sulfate (DSS)-induced chronic IBD model in mice. Two cycles of FMD was administered after IBD symptoms occurred in the mice. FMD administration significantly reduced the score of disease activity index. FMD reversed DSS-mediated shortening of colon length, infiltration of lymphocytes in the crypt of colon, and accumulation of CD4+ cells in the colon and small intestine. The expression of an inflammation marker NLRP3 was also reduced by FMD administration. The percentage of CD4+ T cells in both peripheral blood and spleen was also reduced by FMD. In...

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