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A272 effects of empagliflozin on chemically induced colitis in a mouse model are modulated by SEX and dietary interactions

K. Madsen, B. Villaflor, N. Hotte, A. Thiesen, C. Cheng, T. Omeltchenko

Journal of the Canadian Association of Gastroenterology, 2024

Abstract

Abstract Background High sugar diets have been shown to dramatically increase disease severity in mouse models of colitis. Empagliflozin (EMPA) is a highly selective sodium glucose cotransporter-2 (SGLT2) inhibitor that is used therapeutically as an antihyperglycemic agent in the management of type 2 diabetes. In human trials EMPA treatment exerts potent anti-inflammatory effects independently of glycemic control. Further, we have previously demonstrated in a genetic mouse model of colitis that EMPA treatment was highly effective in improving colonic inflammation. Based on these findings, we hypothesized that EMPA treatment may also be effective in mitigating disease severity in chemically induced colitis in mice fed a high sugar diet. Aims The aim of this study was to examine the effects of treatment with EMPA on chemically induced colitis in mice fed a high sugar diet Methods At 6-8 weeks of age, wild-type 129/SvEv mice were placed on chow (CH) or high sugar diet (HS) (50% sucrose: AIN76A) ± EMPA (10mg/kg). After two days on the diet, mice were administered dextran sodium sulfate (DSS) for 5 days in drinking water followed by water alone for 2 days (n=4-6 mice for all groups). Disease activity index (DAI) was calculated daily from animal weight change, stool consistency, and stool hemoccult. As a measurement of degree of healing, colonic tissues were evaluated at day 9 for histological changes, weight-to-length ratio, and cytokine levels by ELISA. As a measure of EMPA…

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