Abstract
Objective: To study the changes of upper digestive tract and bile flora associated with acute liver failure in mice. Methods: Mice were randomly divided into 2 groups: control group and acute liver failure group (group M). Acute liver failure in group M was induced by intraperitoneal injection of D-galactosamine (D-GaIN). The information of relative abundance and diversity were observed by high-throughput sequencing of V3 + V4 region in 16 S rDNA from bacteria of oral cavity, stomach, duodenal and bile.Bacterial translocation and changes associated with acute liver injury were identified by LEfSe (LDA effect size) analysis. Results: At the phylum level, compared with control group, the relative abundance of TM7 in oral cavity and stomach increased in group M. At the family level, compared with control group, group M resulted in a significant decrease in Pasteurellaceae in the stomach (P<0.05) and a increase in Lactobacillaceae in the bile (P<0.05). Conclusion: The diversity of bacteria and relative abundance of each bacterium in upper digestive tract and the bile are significantly changed during the process of acute liver injure in mice.
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