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Qu, Yuchen; Su, Cunjin; Zhao, Qinhong; Shi, Aiming; Zhao, Fenglun; Tang, Liuxing; Xu, Delai; Xiang, Zheng; Wang, Yang; Wang, Yueyuan; Pan, Jie; Yu, Yunli
Frontiers in pharmacology, 03/2022, Volume: 13Journal Article
A growing body of evidence suggests that gut microbiota could participate in the progression of depression the microbiota-gut-brain axis. However, the detailed microbial metabolic profile changes in the progression of depression is still not fully elucidated. In this study, a liquid chromatography coupled to mass spectrometry-based untargeted serum high-throughput metabolomics method was first performed to screen for potential biomarkers in a depressive-like state in a chronic unpredictable mild stress (CUMS)-induced mouse model. Our results identified that the bile acid and energy metabolism pathways were significantly affected in CUMS progression. The detailed bile acid profiles were subsequently quantified in the serum, liver, and feces. The results showed that CUMS significantly promoted the deconjugation of conjugated bile acid and secondary bile acid biosynthesis. Furthermore, 16S rRNA gene sequencing revealed that the increased secondary bile acid levels in the feces positively correlated with , , and abundance. Taken together, our study suggested that changes in family abundance following chronic stress increased biosynthesis of deoxycholic acid (DCA), a unconjugated secondary bile acid in the intestine. Aberrant activation of secondary bile acid biosynthesis pathway thereby increased the hydrophobicity of the bile acid pool, which might, in turn, promoted metabolic disturbances and disease progression in CUMS mice.
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