Abstract Title:

(-)-Epigallocatechin-3-gallate decreases colonic inflammation and permeability in a mouse model of colitis, but reduces macronutrient digestion and exacerbates weight loss.

Abstract Source:

Mol Nutr Food Res. 2016 May 24. Epub 2016 May 24. PMID: 27218415

Abstract Author(s):

Zachary T Bitzer, Ryan J Elias, Matam Vijay-Kumar, Joshua D Lambert

Article Affiliation:

Zachary T Bitzer


SCOPE: (-)-Epigallocatechin-3-gallate (EGCG) has been reported to have putative health effects including the prevention of inflammation and obesity. Historically, polyphenols have been regarded as anti-nutritionals and while such effects may be beneficial in obese subjects, they may be deleterious in nutritionally-compromised individuals.

METHODS AND RESULTS: We examined the effect of EGCG in the dextran sulfate sodium (DSS)-treated mouse model of ulcerative colitis. Following induction of colitis, mice were treated with EGCG (3.2 mg/g) as the sole source of drinking fluid for 3 d. EGCG treatment mitigated DSS-induced colon shortening and spleen enlargement. EGCG also decreased colonic protein levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor-α, as well as colonic lipid peroxides compared to DSS-treated controls. We observed that EGCG reduced DSS-induced gastrointestinal permeability. These beneficial effects were off-set by enhanced body weight loss in EGCG-treated mice compared to DSS-treated controls. These effects were related to decreased protein and lipid digestion in EGCG-treated mice compared to DSS-treated controls.

CONCLUSIONS: Our results suggest that whereas EGCG may exert anti-inflammatory effects, its ability to modulate macronutrient digestion may represent a dose-limiting adverse effect that must be considered in the context of its use for treating inflammatory bowel disease. This article is protected by copyright. All rights reserved.

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