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To study the regulating effect of total phenolic acids from the stems and leaves of Salvia miltiorrhiza Bge. on the intestinal flora and short-chain fatty acids in spontaneous type 2 diabetic nephropathy mice, db/db mice were taken as the research object, and were treated with the total phenolic acid of Salvia miltiorrhiza Bge. Animal welfare and experimental procedures followed the regulations of the Animal Ethics Committee of Nanjing University of Chinese Medicine Drug Safety Evaluation Research Center. Fresh feces and cecal contents of mice were collected for analysis of intestinal flora composition and differential flora. Gas chromatography was used to detect short-chain fatty acids in fresh feces and cecal content. Then the correlation analysis of the two results was made. Compared with the normal group, the most significant decreased differential flora in the model group were g_Rikenellaceae_RC9_gut_group and g_Bacteroidales_S24-7_group, while the most significant increased were g_unclassified_f__Coriobacteriaceae and g_unclassified_p__Firmicutes. Compared with the blank group, the contents of isovaleric acid and valeric acid in fresh feces and the contents of 6 short-chain fatty acids in the cecal contents of the model group were significantly reduced (P < 0.01). After drug intervention, the intestinal flora disorder and the reduction of short-chain fatty acids were improved to varying degrees, and the effect of the total phenolic acids from the stems and leaves of Salvia miltiorrhiza Bge. was slightly better than that from the roots in regulating some flora and short-chain fatty acids. The results of correlation analysis showed that g_Rikenellaceae_RC9_gut_group was moderately positively correlated with acetic acid and isobutyric acid in the cecal contents (r > 0.4). It is suggested that the total phenolic acid from the stems and leaves of Salvia miltiorrhiza Bge. can improve the intestinal flora disorder of mice with type 2 diabetic nephropathy, and can regulate the content of short-chain fatty acids in the intestine via adjusting the content of some short-chain fatty acid-producing bacteria, thereby helping to restore normal.
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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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