Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression

Tiansi Liquid is a traditional Chinese herbal medicine used to treat depression; however, the underlying mechanisms remain unclear. Here, we examined the effect of Tiansi Liquid in a rat model of hydrocortisone-induced depression using behavioral testing, 16S rRNA high-throughput pyrosequencing and...

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Main Authors: Dan Cheng, Hongsheng Chang, Suya Ma, Jian Guo, Gaimei She, Feilong Zhang, Lingling Li, Xinjie Li, Yi Lu
Format: Article
Language:English
Published: MDPI AG 2018-10-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/23/11/2832
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author Dan Cheng
Hongsheng Chang
Suya Ma
Jian Guo
Gaimei She
Feilong Zhang
Lingling Li
Xinjie Li
Yi Lu
author_facet Dan Cheng
Hongsheng Chang
Suya Ma
Jian Guo
Gaimei She
Feilong Zhang
Lingling Li
Xinjie Li
Yi Lu
author_sort Dan Cheng
collection DOAJ
description Tiansi Liquid is a traditional Chinese herbal medicine used to treat depression; however, the underlying mechanisms remain unclear. Here, we examined the effect of Tiansi Liquid in a rat model of hydrocortisone-induced depression using behavioral testing, 16S rRNA high-throughput pyrosequencing and high-performance liquid chromatography-mass spectrometry-based metabolomics of the tryptophan (TRP)&#8315;kynurenine (KYN) pathway. Tiansi Liquid significantly improved the sucrose preference and exploratory behavior of the depressive rats. The richness of intestinal mucosa samples from the model (depressive) group tended to be higher than that from the control group, while the richness was higher in the Tiansi Liquid-treated group than in the model group. Tiansi Liquid increased the relative abundance of some microbiota (<i>Ruminococcaceae</i>, <i>Lactococcus</i>, <i>Lactobacillus</i>, <i>Lachnospiraceae_NK4A136_group</i>). Metabolomics showed that Tiansi Liquid reduced the levels of tryptophan 2,3 dioxygenase, indoleamine 2,3-dioxygenase, quinoline and the KYN/TRP ratio, while increasing kynurenic acid and 5-HT levels. Correlation analysis revealed a negative relationship between the relative abundance of the <i>Lachnospiraceae_NK4A136_group</i> and quinoline content. Collectively, these findings suggest that Tiansi Liquid ameliorates depressive symptoms in rats by modulating the gut microbiota composition and metabolites in the TRP&#8315;KYN pathway.
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spelling doaj.art-c265f2b0c0ca4540963613a276d11a162022-12-22T02:33:30ZengMDPI AGMolecules1420-30492018-10-012311283210.3390/molecules23112832molecules23112832Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced DepressionDan Cheng0Hongsheng Chang1Suya Ma2Jian Guo3Gaimei She4Feilong Zhang5Lingling Li6Xinjie Li7Yi Lu8School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaSchool of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, ChinaSchool of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaSchool of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaSchool of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, ChinaSchool of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaSchool of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaSchool of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaSchool of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, ChinaTiansi Liquid is a traditional Chinese herbal medicine used to treat depression; however, the underlying mechanisms remain unclear. Here, we examined the effect of Tiansi Liquid in a rat model of hydrocortisone-induced depression using behavioral testing, 16S rRNA high-throughput pyrosequencing and high-performance liquid chromatography-mass spectrometry-based metabolomics of the tryptophan (TRP)&#8315;kynurenine (KYN) pathway. Tiansi Liquid significantly improved the sucrose preference and exploratory behavior of the depressive rats. The richness of intestinal mucosa samples from the model (depressive) group tended to be higher than that from the control group, while the richness was higher in the Tiansi Liquid-treated group than in the model group. Tiansi Liquid increased the relative abundance of some microbiota (<i>Ruminococcaceae</i>, <i>Lactococcus</i>, <i>Lactobacillus</i>, <i>Lachnospiraceae_NK4A136_group</i>). Metabolomics showed that Tiansi Liquid reduced the levels of tryptophan 2,3 dioxygenase, indoleamine 2,3-dioxygenase, quinoline and the KYN/TRP ratio, while increasing kynurenic acid and 5-HT levels. Correlation analysis revealed a negative relationship between the relative abundance of the <i>Lachnospiraceae_NK4A136_group</i> and quinoline content. Collectively, these findings suggest that Tiansi Liquid ameliorates depressive symptoms in rats by modulating the gut microbiota composition and metabolites in the TRP&#8315;KYN pathway.https://www.mdpi.com/1420-3049/23/11/2832Tiansi Liquidantidepressant effects16S rRNA high-throughput pyrosequencinggut microbiotahigh-performance liquid chromatography-mass spectrometrytryptophan–kynurenine pathway
spellingShingle Dan Cheng
Hongsheng Chang
Suya Ma
Jian Guo
Gaimei She
Feilong Zhang
Lingling Li
Xinjie Li
Yi Lu
Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression
Molecules
Tiansi Liquid
antidepressant effects
16S rRNA high-throughput pyrosequencing
gut microbiota
high-performance liquid chromatography-mass spectrometry
tryptophan–kynurenine pathway
title Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression
title_full Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression
title_fullStr Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression
title_full_unstemmed Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression
title_short Tiansi Liquid Modulates Gut Microbiota Composition and Tryptophan–Kynurenine Metabolism in Rats with Hydrocortisone-Induced Depression
title_sort tiansi liquid modulates gut microbiota composition and tryptophan kynurenine metabolism in rats with hydrocortisone induced depression
topic Tiansi Liquid
antidepressant effects
16S rRNA high-throughput pyrosequencing
gut microbiota
high-performance liquid chromatography-mass spectrometry
tryptophan–kynurenine pathway
url https://www.mdpi.com/1420-3049/23/11/2832
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