β-Sitosterol and stigmasterol ameliorate dextran sulfate sodium-induced colitis in mice fed a high fat Western-style diet

Simin Feng, Zhuqing Dai, Anna Liu, Hong Wang, Jayson Chen, Zisheng Luo, Chung S. Yang

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Abstract

Phytosterols, the plant analogues of cholesterol, widely occur in the human diet. In this study, we investigated and compared the effects of stigmasterol and β-sitosterol (both with purities ≥95%) on dextran sulfate sodium (DSS)-induced colitis in C57BL/6J male mice fed a high fat Western-style diet. Mice treated with DSS developed severe mucosal colitis, with a marked distortion and crypt loss of colonic surface epithelium. Both β-sitosterol and stigmasterol significantly inhibited colon shortening, lowered fecal hemoglobin content, and reduced the severity of colitis in the middle and distal colon (p < 0.05). These phytosterols also significantly suppressed the activation of nuclear factor-kappa B. They also significantly decreased colony stimulating factor-1 and the nuclear translocation of inflammatory master regulator nuclear factor-kappa B. Stigmasterol significantly lowered the colonic inflammation score and the expression of cyclooxygenase-2 and colony stimulating factor-1, while β-sitosterol was less or not effective. These results suggest that dietary intake of stigmasterol and β-sitosterol ameliorates colitis. Such activities of stigmasterol and β-sitosterol in humans remain to be investigated.

Original languageEnglish (US)
Pages (from-to)4179-4186
Number of pages8
JournalFood and Function
Volume8
Issue number11
DOIs
StatePublished - Nov 2017

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All Science Journal Classification (ASJC) codes

  • Food Science

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