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We evaluate the therapeutic effects of baicalein on chemotherapy-induced intestinal mucositis (CIM) in mice. The role of gut microflora regulation in the therapeutic effects of baicalein was investigated meanwhile. Male Balb/c mice were randomly divided into three groups including normal control group, model group and experimental group. Except for normal control group, mice were injected with 5-fluorouracil and irinotecan to induce CIM. Animal welfare and experimental procedures comply follow the rules of the Animal Ethics Committee of the Institute of Materia Medica, Chinese Academy of Medical Sciences. Baicalein significantly reduced disease activity index (DAI) of CIM mice and decreased the content of interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α) in serum. There were significant differences in the composition of the gut microbiota among groups according to the analysis of α diversity, β diversity, and the species differences. Compared with the normal control group, the Ruminococcaceae_UCG_014 and unclassified_f_Lachnospiraceae in mice of model group were significantly decreased while Bacteroides, Escherichia_Shigella, Enterococcus, Parabacteroides, Clostridium_sensu_stricto_1, and Lactococcus were significantly increased. Baicalein significantly decreased the abundance of Bacteroides, Escherichia_Shigella, Parabacteroides, Enterococcus, Clostridium_sensu_stricto_1, and Lactococcus. Meantime, norank_f_Muribaculaceae was notably increased by baicalein. The content of IL-6 and TNF-α in the serum of the three groups were positively correlated with the abundance of Clostridium_sensu_stricto_1, Lactococcus, Bacteroides, and Enterococcus according to correlation analysis. This study suggested the potential therapeutic effect of baicalein on CIM in mice. Regulation of gut microbiota probably plays a critical role in the therapeutic effects of baicalein.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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