Effect of cinnamon essential oil on gut microbiota in the mouse model of dextran sodium sulfate-induced colitis.

Increasing evidence has confirmed that the antimicrobial and anti-inflammatory effects of cinnamon essential oil (CEO) contribute to protection against inflammatory bowel disease (IBD). The dextran sodium sulfate (DSS)-induced colitis mouse model was established to investigate the correlation between the protective effects of CEO and the regulation of intestinal microflora. The symptoms of IBD were assessed by measuring the hemoglobin content, myeloperoxidase activity, histopathological observation, cytokines, and toll-like receptor (TLR4) expression. The alteration of the fecal microbiome composition was analyzed by 16S rRNA gene sequencing. The results indicated that the oral administration of CEO enriched with cinnamaldehyde effectively alleviated the development of DSS-induced colitis. In contrast to the inability of antibiotics to regulate flora imbalance, the mice fed with CEO had an improved diversity and richness of intestinal microbiota, and a modified community composition with a decrease in Helicobacter and Bacteroides and an increase in Bacteroidales_S24-7 family and short-chain fatty acids (SCFA)-producing bacteria (Alloprevotella and Lachnospiraceae_NK4A136_group). Moreover, the correlation analysis showed that TLR4 and tumor necrosis factor-α was positively correlated with Helicobacter, but inversely correlated with SCFA-producing bacteria. These findings indicated from a new perspective that the inhibitory effect of CEO on IBD was closely related to improving the intestinal flora imbalance.

Li AL ，Ni WW ，Zhang QM ，Li Y ，Zhang X ，Wu HY ，Du P ，Hou JC ，Zhang Y ... -  《-》

Modulation of gut microbiota by Ilex kudingcha improves dextran sulfate sodium-induced colitis.

Increasing evidence shows that the gut microbiota contributes to the occurrence and development of colitis. Kudingcha (KDC), made from the leaves of Ilex kudingcha, could mitigate inflammation, however, little is known about the relationship between modulatory effect on gut microbiota by KDC and improvement of colitis. In this study, the attenuating effects of KDC extract (KDCE) on dextran sulfate sodium (DSS)-induced colitis and gut microbiota in C57BL/6 mice were investigated. It was found that the supplementation of KDCE could alleviate typical symptoms of IBD including weight loss, colon shortening, intestinal barrier damage, and decreases in the colitis disease activity index and pro-inflammatory cytokines. Moreover, KDCE supplementation could reverse the alteration of gut microbiota in the colitic mice by increasing the abundances of potential beneficial bacteria, e.g. Odoribacter, Prevotella and Helicobacter, and decreasing the abundances of potential harmful bacteria, e.g. Parabacteroides, Bacteroides, Turicibacter, Parasutterella and Lachnospiraceae. The levels of short-chain fatty acids in feces, cecum contents and serum were also regulated by KDCE. Furthermore, the correlation analysis suggested that KDCE could attenuate DSS-induced colitis which might be related to the alteration of gut microbiota. Therefore, the modulation of gut microbiota by KDCE might be a potential strategy for improving inflammation-driven diseases.

Wan P ，Peng Y ，Chen G ，Xie M ，Dai Z ，Huang K ，Dong W ，Zeng X ，Sun Y ... -  《-》

Effects of Pretreatment with Bifidobacterium bifidum Using 16S Ribosomal RNA Gene Sequencing in a Mouse Model of Acute Colitis Induced by Dextran Sulfate Sodium.

Weng YJ ，Jiang DX ，Liang J ，Ye SC ，Tan WK ，Yu CY ，Zhou Y ... -  《MEDICAL SCIENCE MONITOR》

Novel Gut Microbiota Patterns Involved in the Attenuation of Dextran Sodium Sulfate-Induced Mouse Colitis Mediated by Glycerol Monolaurate via Inducing Anti-inflammatory Responses.

Mo Q ，Liu T ，Fu A ，Ruan S ，Zhong H ，Tang J ，Zhao M ，Li Y ，Zhu S ，Cai H ，Feng F ... -  《mBio》

Anti-Inflammatory and Intestinal Microbiota Modulation Properties of Jinxiang Garlic (Allium sativum L.) Polysaccharides toward Dextran Sodium Sulfate-Induced Colitis.

Shao X ，Sun C ，Tang X ，Zhang X ，Han D ，Liang S ，Qu R ，Hui X ，Shan Y ，Hu L ，Fang H ，Zhang H ，Wu X ，Chen C ... -  《-》