Fermented Rice Bran Supplementation Prevents the Development of Intestinal Fibrosis Due to DSS-Induced Inflammation in Mice.

Abstract

Fermented rice bran (FRB) is known to protect mice intestines against dextran sodium sulfate (DSS)-induced inflammation; however, the restoration of post-colitis intestinal homeostasis using FRB supplementation is currently undocumented. In this study, we observed the effects of dietary FRB supplementation on intestinal restoration and the development of fibrosis after DSS-induced colitis. DSS (1.5%) was introduced in the drinking water of mice for 5 days. Eight mice were sacrificed immediately after the DSS treatment ended. The remaining mice were divided into three groups, comprising the following diets: control, 10% rice bran (RB), and 10% FRB-supplemented. Diet treatment was continued for 2 weeks, after which half the population of mice from each group was sacrificed. The experiment was continued for another 3 weeks before the remaining mice were sacrificed. FRB supplementation could reduce the general observation of colitis and production of intestinal pro-inflammatory cytokines. FRB also increased intestinal mRNA levels of anti-inflammatory cytokine, tight junction, and anti-microbial proteins. Furthermore, FRB supplementation suppressed markers of intestinal fibrosis. This effect might have been achieved via the canonical Smad2/3 activation and the non-canonical pathway of Tgf-β activity. These results suggest that FRB may be an alternative therapeutic agent against inflammation-induced intestinal fibrosis.

• Authors: Afifah Zahra Agista, Tubagus Bahtiar Rusbana, Jahidul Islam, Yusuke Ohsaki, Halima Sultana, Ryouta Hirakawa, Kouichi Watanabe, Tomonori Nochi, Ardiansyah, Slamet Budijanto, Suh-Ching Yang, Takuya Koseki, Hisashi Aso, Michio Komai, Hitoshi Shirakawa
• Journal: Nutrients (Nutrients) Vol. 13 Issue 6 (May 30 2021) ISSN: 2072-6643 [Electronic] Switzerland
• PMID: 34070845 (Publication Type: Journal Article)

Chemical References

• Dextran Sulfate

Topics

• Animals
• Dextran Sulfate
• Diet (methods)
• Dietary Supplements
• Disease Models, Animal
• Female
• Fermentation
• Fibrosis
• Inflammation (physiopathology)
• Intestinal Diseases (prevention & control)
• Mice
• Mice, Inbred C57BL
• Oryza