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Hasegawa-Ishii S, Komaki S, Asano H, Imai R, Osaki T. Chronic nasal inflammation early in life induces transient and long-term dysbiosis of gut microbiota in mice. Brain Behav Immun Health 2024; 41:100848. [PMID: 39280089 PMCID: PMC11402449 DOI: 10.1016/j.bbih.2024.100848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 07/30/2024] [Accepted: 08/17/2024] [Indexed: 09/18/2024] Open
Abstract
The gut microbiota begins to colonize the host body following birth, develops during the suckling period and changes to the adult type after weaning. The early gut microbiota during the suckling period is thought to have profound effects on the host physiology throughout life but it is still unclear whether early dysbiosis is retained lifelong. Our previous study indicated that chronic nasal inflammation induces dysbiosis of gut microbiota in adult mice. In the present study, we addressed the question as to whether early exposure to chronic nasal inflammation induces dysbiosis, and if so, whether the dysbiosis is retained until adulthood and the sex differences in this effect. Male and female mice received repeated intranasal administration of lipopolysaccharide (LPS) or saline twice a week from P7 to P24 and were weaned at P24. The cecal contents were obtained for 16S rRNA analysis at 2 time points: at 4 weeks (wks), just after weaning, and at maturation to adulthood at 10 wks. The body weight did not differ between saline- and LPS-treated mice till around weaning, suggesting that the mothers' milk was given similarly to all mice. At 4 wks, the beta diversity was significantly different between saline- and LPS-treated male and female mice and the composition of the gut microbiota changed in LPS-treated mice. The abundance of phylum Bacteroidota tended to decrease and that of Firmicutes increased in LPS-treated male mice, while the abundance of Deferribacterota increased in LPS-treated female mice. At 10 wks, the beta diversity was not different between saline- and LPS-treated mice, but the abundance of family Lachnospiraceae significantly decreased in LPS-treated male and female mice by LEfSe analysis. Together, chronic nasal inflammation early in life caused transient and long-term dysbiosis of gut microbiota, which may contribute to the onset and progress of metabolic and neuropsychiatric disorders.
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Affiliation(s)
- Sanae Hasegawa-Ishii
- Pathology Research Team, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, Tokyo, 181-8612, Japan
| | - Suzuho Komaki
- Pathology Research Team, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, Tokyo, 181-8612, Japan
| | - Hinami Asano
- Pathology Research Team, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, Tokyo, 181-8612, Japan
| | - Ryuichi Imai
- Pathology Research Team, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, Tokyo, 181-8612, Japan
| | - Takako Osaki
- Department of Infectious Diseases, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo, 181-8611, Japan
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Zhang Y, Lin Y, Xiong Y, Huang J, Liu Z. An Analysis of the Intestinal Microbiome Combined with Metabolomics to Explore the Mechanism of How Jasmine Tea Improves Depression in CUMS-Treated Rats. Foods 2024; 13:2636. [PMID: 39200564 PMCID: PMC11353544 DOI: 10.3390/foods13162636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/25/2024] [Accepted: 08/16/2024] [Indexed: 09/02/2024] Open
Abstract
Recently, research has confirmed that jasmine tea may help improve the depressive symptoms that are associated with psychiatric disorders. Our team previously found that jasmine tea improved the depressive-like behavior that is induced by chronic unpredictable mild stress (CUMS) in Sprague Dawley (SD) rats. We hypothesized that the metabolic disorder component of depression may be related to the gut microbiota, which may be reflected in the metabolome in plasma. The influence of jasmine tea on gut microbiota composition and the association with depressive-related indexes were explored. Furthermore, the metabolites in plasma that are related to the gut microbiota were identified. SD rats were treated with control or CUMS and administrated jasmine tea for 8 weeks. The 16S rRNA gene amplicon sequencing was used to analyze the gut microbiota in feces samples, and untargeted metabolomics was used to analyze the metabolites in plasma. The results found that jasmine tea significantly ameliorated the depressive behavior induced by CUMS, significantly improved the neurotransmitter concentration (BDNF and 5-HT), and decreased the pro-inflammation levels (TNF-α and NF-κB). The intervention of jasmine tea also alleviated the dysbiosis caused by CUMS; increased the relative abundance of Bacteroides, Blautia, Clostridium, and Lactobacillus; and decreased Ruminococcus and Butyrivibrio in the CUMS-treated rats. Furthermore, the serum metabolites of the CUMS-treated rats were reversed after the jasmine tea intervention, i.e., 22 were up-regulated and 18 were down-regulated, which may have a close relationship with glycerophospholipid metabolism pathways, glycine serine and threonine metabolism pathways, and nicotinate and nicotinamide metabolism pathways. Finally, there were 30 genera of gut microbiota related to the depressive-related indexes, and 30 metabolites in the plasma had a strong predictive ability for depressive behavior. Potentially, our research implies that the intervention of jasmine tea can ameliorate the depression induced by CUMS via controlling the gut flora and the host's metabolism, which is an innovative approach for the prevention and management of depression.
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Affiliation(s)
- Yangbo Zhang
- School of Pharmacy, Shaoyang University, Shaoyang 422000, China;
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (Y.X.); (J.H.)
| | - Yong Lin
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (Y.X.); (J.H.)
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
| | - Yifan Xiong
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (Y.X.); (J.H.)
| | - Jianan Huang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (Y.X.); (J.H.)
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (Y.X.); (J.H.)
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
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Hu X, Zhen W, Bai D, Zhong J, Zhang R, Zhang H, Zhang Y, Ito K, Zhang B, Ma Y. Effects of dietary chlorogenic acid on cecal microbiota and metabolites in broilers during lipopolysaccharide-induced immune stress. Front Microbiol 2024; 15:1347053. [PMID: 38525083 PMCID: PMC10957784 DOI: 10.3389/fmicb.2024.1347053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/19/2024] [Indexed: 03/26/2024] Open
Abstract
Aims The aim of this study was to investigate the effects of chlorogenic acid (CGA) on the intestinal microorganisms and metabolites in broilers during lipopolysaccharide (LPS)-induced immune stress. Methods A total of 312 one-day-old Arbor Acres (AA) broilers were randomly allocated to four groups with six replicates per group and 13 broilers per replicate: (1) MS group (injected with saline and fed the basal diet); (2) ML group (injected with 0.5 mg LPS/kg and fed the basal diet); (3) MA group (injected with 0.5 mg LPS/kg and fed the basal diet supplemented with 1,000 mg/kg CGA); and (4) MB group (injected with saline and fed the basal diet supplemented with 1,000 mg/kg CGA). Results The results showed that the abundance of beneficial bacteria such as Bacteroidetes in the MB group was significantly higher than that in MS group, while the abundance of pathogenic bacteria such as Streptococcaceae was significantly decreased in the MB group. The addition of CGA significantly inhibited the increase of the abundance of harmful bacteria such as Streptococcaceae, Proteobacteria and Pseudomonas caused by LPS stress. The population of butyric acid-producing bacteria such as Lachnospiraceae and Coprococcus and beneficial bacteria such as Coriobacteriaceae in the MA group increased significantly. Non-targeted metabonomic analysis showed that LPS stress significantly upregulated the 12-keto-tetrahydroleukotriene B4, riboflavin and mannitol. Indole-3-acetate, xanthurenic acid, L-formylkynurenine, pyrrole-2-carboxylic acid and L-glutamic acid were significantly down-regulated, indicating that LPS activated inflammation and oxidation in broilers, resulting in intestinal barrier damage. The addition of CGA to the diet of LPS-stimulated broilers significantly decreased 12-keto-tetrahydro-leukotriene B4 and leukotriene F4 in arachidonic acid metabolism and riboflavin and mannitol in ABC transporters, and significantly increased N-acetyl-L-glutamate 5-semialdehyde in the biosynthesis of amino acids and arginine, The presence of pyrrole-2-carboxylic acid in D-amino acid metabolism and the cecal metabolites, indolelactic acid, xanthurenic acid and L-kynurenine, indicated that CGA could reduce the inflammatory response induced by immune stress, enhance intestinal barrier function, and boost antioxidant capacity. Conclusion We conclude that CGA can have a beneficial effect on broilers by positively altering the balance of intestinal microorganisms and their metabolites to inhibit intestinal inflammation and barrier damage caused by immune stress.
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Affiliation(s)
- Xiaodi Hu
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Wenrui Zhen
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Dongying Bai
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Jiale Zhong
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Ruilin Zhang
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Haojie Zhang
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Yi Zhang
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Koichi Ito
- Department of Food and Physiological Models, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki, Japan
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yanbo Ma
- Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Henan International Joint Laboratory of Animal Welfare and Health Breeding, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
- Longmen Laboratory, Science & Technology Innovation Center for Completed Set Equipment, Luoyang, China
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Zhou L, Yang C, Liu Z, Chen L, Wang P, Zhou Y, Yuan M, Zhou LT, Wang X, Zhu LQ. Neuroprotective effect of the traditional decoction Tian-Si-Yin against Alzheimer's disease via suppression of neuroinflammation. JOURNAL OF ETHNOPHARMACOLOGY 2024; 321:117569. [PMID: 38086513 DOI: 10.1016/j.jep.2023.117569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/27/2023] [Accepted: 12/06/2023] [Indexed: 12/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alzheimer's disease (AD) is the most prevalent neurodegenerative disease among old adults. As a traditional Chinese medicine, the herbal decoction Tian-Si-Yin consists of Morinda officinalis How. and Cuscuta chinensis Lam., which has been widely used to nourish kidney. Interestingly, Tian-Si-Yin has also been used to treat dementia, depression and other neurological conditions. However, its therapeutic potential for neurodegenerative diseases such as AD and the underlying mechanisms remain unclear. AIM OF THE STUDY To evaluate the therapeutic effect of the herbal formula Tian-Si-Yin against AD and to explore the underlying mechanisms. MATERIALS AND METHODS The N2a cells treated with amyloid β (Aβ) peptide or overexpressing amyloid precursor protein (APP) were used to establish cellular models of AD. The in vivo anti-AD effects were evaluated by using Caenorhabditis elegans and 3 × Tg-AD mouse models. Tian-Si-Yin was orally administered to the mice for 8 weeks at a dose of 10, 15 or 20 mg/kg/day, respectively. Its protective role on memory deficits of mice was examined using the Morris water maze and fear conditioning tests. Network pharmacology, proteomic analysis and ultra-high performance liquid chromatography-mass spectrometry/mass spectrometry (UHPLC-MS/MS) were used to explore the underlying molecular mechanisms, which were further investigated by Western blotting and immunohistochemistry. RESULTS Tian-Si-Yin was shown to improve cell viability of Aβ-treated N2a cells and APP-expressing N2a-APP cells. Tian-Si-Yin was also found to reduce ROS level and extend lifespan of transgenic AD-like C. elegans model. Oral administration of Tian-Si-Yin at medium dose was able to effectively rescue memory impairment in 3 × Tg mice. Tian-Si-Yin was further shown to suppress neuroinflammation by inhibition of glia cell activation and downregulation of inflammatory cytokines, diminishing tau phosphoralytion and Aβ deposition in the mice. Using UHPLC-MS/MS and network pharmacology technologies, 17 phytochemicals from 68 components of Tian-Si-Yin were identified as potential anti-AD components. MAPK1, BRAF, TTR and Fyn were identified as anti-AD targets of Tian-Si-Yin from network pharmacology and mass spectrum. CONCLUSIONS This study has established the protective effect of Tian-Si-Yin against AD and demonstrates that Tian-Si-Yin is capable of improving Aβ level, tau pathology and synaptic disorder by regulating inflammatory response.
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Affiliation(s)
- Ling Zhou
- Department of Pathophysiology, Key Laboratory of Neurological Disorders of the Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Chunqing Yang
- Department of Pathophysiology, Key Laboratory of Neurological Disorders of the Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Zhiqiang Liu
- Department of Pathophysiology, Key Laboratory of Neurological Disorders of the Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Linlin Chen
- School of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, PR China
| | - Ping Wang
- School of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, PR China
| | - Yuan Zhou
- The Second Affiliated Hospital, Department of Neurology, Hengyang Medical School, University of South China, Hengyang, PR China
| | - Mei Yuan
- The Second Affiliated Hospital, Department of Neurology, Hengyang Medical School, University of South China, Hengyang, PR China
| | - Lan-Ting Zhou
- School of Basic Medicine, Hubei University of Arts and Science, Xiangyang, PR China; Neuroscience and Brainscience Institute of Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, PR China.
| | - Xueren Wang
- Department of Anesthesiology, Shanxi Bethune Hospital, Taiyuan, PR China; Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
| | - Ling-Qiang Zhu
- Department of Pathophysiology, Key Laboratory of Neurological Disorders of the Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; The Institute of Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, PR China.
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Yang YH, Li CX, Zhang RB, Shen Y, Xu XJ, Yu QM. A review of the pharmacological action and mechanism of natural plant polysaccharides in depression. Front Pharmacol 2024; 15:1348019. [PMID: 38389919 PMCID: PMC10883385 DOI: 10.3389/fphar.2024.1348019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/29/2024] [Indexed: 02/24/2024] Open
Abstract
Depression is a prevalent mental disorder. However, clinical treatment options primarily based on chemical drugs have demonstrated varying degrees of adverse reactions and drug resistance, including somnolence, nausea, and cognitive impairment. Therefore, the development of novel antidepressant medications that effectively reduce suffering and side effects has become a prominent area of research. Polysaccharides are bioactive compounds extracted from natural plants that possess diverse pharmacological activities and medicinal values. It has been discovered that polysaccharides can effectively mitigate depression symptoms. This paper provides an overview of the pharmacological action and mechanisms, intervention approaches, and experimental models regarding the antidepressant effects of polysaccharides derived from various natural sources. Additionally, we summarize the roles and potential mechanisms through which these polysaccharides prevent depression by regulating neurotransmitters, HPA axis, neurotrophic factors, neuroinflammation, oxidative stress, tryptophan metabolism, and gut microbiota. Natural plant polysaccharides hold promise as adjunctive antidepressants for prevention, reduction, and treatment of depression by exerting their therapeutic effects through multiple pathways and targets. Therefore, this review aims to provide scientific evidence for developing polysaccharide resources as effective antidepressant drugs.
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Affiliation(s)
- Yu-He Yang
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Chen-Xue Li
- Harbin University of Commerce, Harbin, China
| | | | - Ying Shen
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xue-Jiao Xu
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Qin-Ming Yu
- Heilongjiang University of Chinese Medicine, Harbin, China
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Zeng JW, Zhao JL, Han ZJ, Duan YJ, Lin L. Narrative Review: Pathogenesis of the Inflammatory Response and Intestinal Flora in Depression. Neuropsychiatr Dis Treat 2023; 19:2469-2483. [PMID: 38029049 PMCID: PMC10658945 DOI: 10.2147/ndt.s430444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Depression, as a common mental illness that is often accompanied by suicidal and homicidal behaviors, is one of the most important diseases in the medical field that requires urgent attention. The pathogenesis of depression is complex, and the current therapeutic drugs such as tricyclic antidepressants (TCAs), monoamine oxidase inhibitors, and secondary serotonin reuptake inhibitors have certain shortcomings. The inflammatory factor hypothesis, one of the pathogenesis of depression, suggests that inflammatory response is a key factor leading to the occurrence and development of depression, and that overactivation of inflammatory factors such as NLRP3, Toll-like receptor 4, and IDO leads to immune-system dysfunction and depression. The other pathogenic hypothesis, the gut flora hypothesis, has also been the focus of recent research. The gut flora may work together with inflammatory factors to cause depression. The approach to treating depression has been by altering the gut flora through drugs or probiotics. However, effective and clear treatment methods are lacking. In this study, by exploring the involvement of intestinal flora and inflammatory factors in the pathogenesis of depression, we found that improving the intestinal flora can affect inflammatory factors and, therefore, provide research ideas for the development of novel drugs to treat depression.
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Affiliation(s)
- Jia-Wei Zeng
- Laboratory of Medical Molecular and Cellular Biology, College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, 430065, People’s Republic of China
- Department of Anatomy Teaching and Research, College of Basic Medical sciences, Hubei University of Chinese Medicine, Wuhan, 430065, People’s Republic of China
| | - Juan-Li Zhao
- Laboratory of Medical Molecular and Cellular Biology, College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, 430065, People’s Republic of China
| | - Zhen-Jie Han
- Laboratory of Medical Molecular and Cellular Biology, College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, 430065, People’s Republic of China
| | - Yan-Jun Duan
- Department of Anatomy Teaching and Research, College of Basic Medical sciences, Hubei University of Chinese Medicine, Wuhan, 430065, People’s Republic of China
| | - Li Lin
- Laboratory of Medical Molecular and Cellular Biology, College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, 430065, People’s Republic of China
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Shen R, Li Z, Wang H, Wang Y, Li X, Yang Q, Fu Y, Li M, Gao LN. Chinese Materia Medica in Treating Depression: The Role of Intestinal Microenvironment. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2023; 51:1927-1955. [PMID: 37930334 DOI: 10.1142/s0192415x23500854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Depression is a highly heterogeneous mental illness. Drug treatment is currently the main therapeutic strategy used in the clinic, but its efficacy is limited by the modulation of a single target, slow onset, and side effects. The gut-brain axis is of increasing interest because intestinal microenvironment disorders increase susceptibility to depression. In turn, depression affects intestinal microenvironment homeostasis by altering intestinal tissue structure, flora abundance and metabolism, hormone secretion, neurotransmitter transmission, and immune balance. Depression falls into the category of "stagnation syndrome" according to Traditional Chinese Medicine (TCM), which further specifies that "the heart governs the spirit and is exterior-interior with the small intestine". However, the exact mechanisms of the means by which the disordered intestinal microenvironment affects depression are still unclear. Here, we present an overview of how the Chinese materia medica (CMM) protects against depression by repairing intestinal microenvironment homeostasis. We review the past five years of research progress in classical antidepressant TCM formulae and single CMMs on regulating the intestinal microenvironment for the treatment of depression. We then analyze and clarify the multitarget functions of CMM in repairing intestinal homeostasis and aim to provide a new theoretical basis for CMM clinical application in the treatment of depression.
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Affiliation(s)
- Ruhui Shen
- College of Pharmacy, Binzhou Medical University, Yantai, Shandong 264003, P. R. China
- College of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
| | - Zhipeng Li
- College of Pharmacy, Binzhou Medical University, Yantai, Shandong 264003, P. R. China
| | - Huiyun Wang
- College of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
- Shandong Collaborative Innovation Center for Diagnosis, Treatment and Behavioral Interventions of Mental Disorders, Institute of Mental Health, Jining Medical University, Jining, Shandong 272067, P. R. China
| | - Yongchao Wang
- Rizhao Hospital of Traditional Chinese Medicine, Rizhao, Shandong 276800, P. R. China
| | - Xiaofang Li
- Rizhao Hospital of Traditional Chinese Medicine, Rizhao, Shandong 276800, P. R. China
| | - Qian Yang
- College of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
| | - Yingjie Fu
- College of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
| | - Ming Li
- College of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
| | - Li-Na Gao
- College of Pharmacy, Jining Medical University, Rizhao, Shandong 276800, P. R. China
- Shandong Collaborative Innovation Center for Diagnosis, Treatment and Behavioral Interventions of Mental Disorders, Institute of Mental Health, Jining Medical University, Jining, Shandong 272067, P. R. China
- Jining Key Laboratory of Depression Prevention and Treatment, Jining Medical University, Jining, Shandong 272067, P. R. China
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Liu D, Tang F, Zhang L, Zhang JN, Zhao XL, Xu LY, Peng C, Ao H. Alpinia katsumadai Hayata Volatile Oil Is Effective in Treating 5-Fluorouracil-Induced Mucositis by Regulating Gut Microbiota and Modulating the GC/GR Pathway and the mPGES-1/PGE2/EP4 Pathways. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15156-15169. [PMID: 37800952 DOI: 10.1021/acs.jafc.3c05051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
This study was aimed to investigate the therapeutic effect and mechanism of AKHO on 5-fluorouracil (5-FU)-induced intestinal mucositis in mice. Mouse body weight, diarrhea score, and H&E staining were applied to judge the therapeutic effect of AKHO. 16S rDNA and nontargeted metabolomics have been used to study the mechanism. WB, ELISA, and immunohistochemistry were adopted to validate possible mechanisms. The results demonstrated that AKHO significantly reduced diarrhea scores and intestinal damage induced by 5-FU in mice. AKHO lowered the serum levels of LD and DAO, and upregulated the expressions of ZO-1 and occludin in the ileum. Also, AKHO upregulated the abundance of Lactobacillus in the gut and suppressed KEGG pathways such as cortisol synthesis and secretion and arachidonic acid metabolism. Further validation studies indicated that AKHO downregulated the expressions of prostaglandin E2 (PGE2), microsomal prostaglandin E synthase-1 (mPGES-1), and PGE2 receptor EP4, as well as upregulated the expression of glucocorticoid (GC) receptor (GR), leading to improved intestinal epithelial barrier function. Taken together, AKHO elicited protective effects against 5-FU-induced mucositis by regulating the expressions of tight junction proteins via modulation of GC/GR and mPGES-1/PGE2/EP4 pathway, providing novel insights into the utilization and development of this pharmaceutical/food resource.
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Affiliation(s)
- Dong Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Fei Tang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Li Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Jing-Nan Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xiao-Lan Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Li-Yue Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Hui Ao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
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Chen Q, Jia T, Wu X, Chen X, Wang J, Ba Y. Polygalae Radix Oligosaccharide Esters May Relieve Depressive-like Behavior in Rats with Chronic Unpredictable Mild Stress via Modulation of Gut Microbiota. Int J Mol Sci 2023; 24:13877. [PMID: 37762181 PMCID: PMC10530649 DOI: 10.3390/ijms241813877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/24/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Polygalae radix (PR) is a well-known traditional Chinese medicine that is used to treat depression, and polygalae radix oligosaccharide esters (PROEs) are the main active ingredient. Although gut microbiota are now believed to play key role in depression, the effects of PROEs on depression via modulation of gut microbiota remain unknown. In this article, we investigate the effect of PROEs on the gut microbiota of a depression rat and the possible mechanism responsible. The depression rat model was induced by solitary rearing combined with chronic unpredictable mild stress (CUMS). The depression-like behavior, the influence on the hypothalamic-pituitary-adrenal (HPA) axis, the contents of monoamine neurotransmitter in the hippocampus, and the quantity of short-chain fatty acids (SCFAs) in the feces were each assessed, and the serum levels of lipopolysaccharide (LPS) and interleukin-6 (IL-6) were measured by ELISA. Additionally, ultrastructural changes of the duodenal and colonic epithelium were observed under transmission electron microscope, and the gut microbiota were profiled by using 16S rRNA sequencing. The results show that PROEs alleviated the depression-like behavior of the depression model rats, increased the level of monoamine neurotransmitters in the brain, and reduced the hyperfunction of the HPA axis. Furthermore, PROEs regulated the imbalance of the gut microbiota in the rats, relieving intestinal mucosal damage by increasing the relative abundance of gut microbiota with intestinal barrier protective functions, and adjusting the level of SCFAs in the feces, as well as the serum levels of LPS and IL-6. Thus, we find that PROEs had an antidepressant effect through the restructuring of gut microbiota that restored the function of the intestinal barrier, reduced the release of intestinal endotoxin, and constrained the inflammatory response.
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Affiliation(s)
- Qijun Chen
- School of Traditional Chinese Medicine, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China; (Q.C.); (T.J.); (X.W.); (X.C.); (J.W.)
- School of Pharmaceutical Sciences, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China
| | - Tanrong Jia
- School of Traditional Chinese Medicine, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China; (Q.C.); (T.J.); (X.W.); (X.C.); (J.W.)
| | - Xia Wu
- School of Traditional Chinese Medicine, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China; (Q.C.); (T.J.); (X.W.); (X.C.); (J.W.)
| | - Xiaoqing Chen
- School of Traditional Chinese Medicine, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China; (Q.C.); (T.J.); (X.W.); (X.C.); (J.W.)
| | - Jiajia Wang
- School of Traditional Chinese Medicine, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China; (Q.C.); (T.J.); (X.W.); (X.C.); (J.W.)
| | - Yinying Ba
- School of Traditional Chinese Medicine, Capital Medical University, No. 10, Xitoutiao, Youanmenwai Street, Beijing 100069, China; (Q.C.); (T.J.); (X.W.); (X.C.); (J.W.)
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10
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Li B, Xu M, Wang Y, Feng L, Xing H, Zhang K. Gut microbiota: A new target for traditional Chinese medicine in the treatment of depression. JOURNAL OF ETHNOPHARMACOLOGY 2023; 303:116038. [PMID: 36529248 DOI: 10.1016/j.jep.2022.116038] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/20/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
ETHNIC PHARMACOLOGICAL RELEVANCE The causes of depression are complex. Many factors are involved in its pathogenesis, including the individual's biological and social environment. Although numerous studies have reported that the gut microbiota plays a significant role in depression, drugs that regulate the gut microbiota to treat depression have not yet been comprehensively reviewed. At the same time, more and more attention has been paid to the characteristics of traditional Chinese medicine (TCM) in improving depression by regulating gut microbiota. In ancient times, fecal microbiota transplantation was recorded in TCM for the treatment of severe diseases. There are also records in Chinese ancient books about the use of TCM to adjust gut microbiota to treat diseases, which has opened up a unique research field in TCM. Therefore, this article focuses on the pharmacological effects, targets, and mechanisms of TCM in improving depression by mediating the influence of gut microbiota. AIM OF THIS REVIEW To summarize the role the gut microbiota plays in depression, highlight potential regulatory targets, and elucidate the anti-depression mechanisms of TCMs through regulation of the gut microbiota. METHODS A systematic review of 256 clinical trials and pharmaceutical studies published until June 2022 was conducted in eight electronic databases (Web of Science, PubMed, SciFinder, Research Gate, ScienceDirect, Google Scholar, Scopus, and China Knowledge Infrastructure), according to the implemented PRISMA criteria, using the search terms "traditional Chinese medicine," "depression," and "gut microbiota." RESULTS Numerous studies reported the effects of different gut bacteria on depression and that antidepressants work through the gut microbiota. TCM preparations based on compound Chinese medicine, the Chinese Materia Medica, and major bioactive components exerted antidepressant-like effects by improving levels of neurotransmitters, short-chain fatty acids, brain-derived neurotrophic factor, kynurenine, and cytokines via regulation of the gut microbiota. CONCLUSION This review summarized the anti-depression effects of TCM on the gut microbiota, providing evidence that TCMs are safe and effective in the treatment of depression and may provide a new therapeutic approach.
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Affiliation(s)
- Boru Li
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Meijing Xu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yu Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Lijin Feng
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Hang Xing
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, 110016, China; Jiangsu Kanion Pharmaceutical Co, Ltd, Lianyungang, 222001, China.
| | - Kuo Zhang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, 110016, China; Tianjin UBasio Biotechnology Group, Tianjin, 300457, China.
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11
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Donovan M, Mackey CS, Lynch MDJ, Platt GN, Brown AN, Washburn BK, Trickey DJ, Curtis JT, Liu Y, Charles TC, Wang Z, Jones KM. Limosilactobacillus reuteri administration alters the gut-brain-behavior axis in a sex-dependent manner in socially monogamous prairie voles. Front Microbiol 2023; 14:1015666. [PMID: 36846764 PMCID: PMC9945313 DOI: 10.3389/fmicb.2023.1015666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/05/2023] [Indexed: 02/11/2023] Open
Abstract
Research on the role of gut microbiota in behavior has grown dramatically. The probiotic L. reuteri can alter social and stress-related behaviors - yet, the underlying mechanisms remain largely unknown. Although traditional laboratory rodents provide a foundation for examining the role of L. reuteri on the gut-brain axis, they do not naturally display a wide variety of social behaviors. Using the highly-social, monogamous prairie vole (Microtus ochrogaster), we examined the effects of L. reuteri administration on behaviors, neurochemical marker expression, and gut-microbiome composition. Females, but not males, treated with live L. reuteri displayed lower levels of social affiliation compared to those treated with heat-killed L. reuteri. Overall, females displayed a lower level of anxiety-like behaviors than males. Live L. reuteri-treated females had lower expression of corticotrophin releasing factor (CRF) and CRF type-2-receptor in the nucleus accumbens, and lower vasopressin 1a-receptor in the paraventricular nucleus of the hypothalamus (PVN), but increased CRF in the PVN. There were both baseline sex differences and sex-by-treatment differences in gut microbiome composition. Live L. reuteri increased the abundance of several taxa, including Enterobacteriaceae, Lachnospiraceae NK4A136, and Treponema. Interestingly, heat-killed L. reuteri increased abundance of the beneficial taxa Bifidobacteriaceae and Blautia. There were significant correlations between changes in microbiota, brain neurochemical markers, and behaviors. Our data indicate that L. reuteri impacts gut microbiota, gut-brain axis and behaviors in a sex-specific manner in socially-monogamous prairie voles. This demonstrates the utility of the prairie vole model for further examining causal impacts of microbiome on brain and behavior.
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Affiliation(s)
- Meghan Donovan
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL, United States
- Rocky Mountain Mental Illness Research Education and Clinical Center, Rocky Mountain Regional VA Medical Center, Aurora, CO, United States
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Calvin S. Mackey
- Department of Biological Science, Florida State University, Tallahassee, FL, United States
| | - Michael D. J. Lynch
- Metagenom Bio Life Science Inc, Waterloo, ON, Canada
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
| | - Grayson N. Platt
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL, United States
- Department of Biological Science, Florida State University, Tallahassee, FL, United States
| | - Amber N. Brown
- Department of Biological Science Core Facilities, Florida State University, Tallahassee, FL, United States
| | - Brian K. Washburn
- Department of Biological Science Core Facilities, Florida State University, Tallahassee, FL, United States
| | - Darryl J. Trickey
- Department of Biological Science, Florida State University, Tallahassee, FL, United States
| | - J. Thomas Curtis
- Department of Pharmacology and Physiology, Oklahoma State University Center for Health Sciences, Tulsa, OK, United States
| | - Yan Liu
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL, United States
| | - Trevor C. Charles
- Metagenom Bio Life Science Inc, Waterloo, ON, Canada
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
| | - Zuoxin Wang
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL, United States
| | - Kathryn M. Jones
- Department of Biological Science, Florida State University, Tallahassee, FL, United States
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12
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Kim IB, Park SC, Kim YK. Microbiota-Gut-Brain Axis in Major Depression: A New Therapeutic Approach. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1411:209-224. [PMID: 36949312 DOI: 10.1007/978-981-19-7376-5_10] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Major depression is impacted by the disruption of gut microbiota. Defects in gut microbiota can lead to microbiota-gut-brain axis dysfunction and increased vulnerability to major depression. While traditional chemotherapeutic approaches, such as antidepressant use, produce an overall partial therapeutic effect on depression, the gut microbiome has emerged as an effective target for better therapeutic outcomes. Recent representative studies on the microbiota hypothesis to explore the association between gut pathophysiology and major depression have indicated that restoring gut microbiota and microbiota-gut-brain axis could alleviate depression. We reviewed studies that supported the gut microbiota hypothesis to better understand the pathophysiology of depression; we also explored reports suggesting that gut microbiota restoration is an effective approach for improving depression. These findings indicate that gut microbiota and microbiota-gut-brain axis are appropriate new therapeutic targets for major depression.
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Affiliation(s)
- Il Bin Kim
- Department of Psychiatry, Hanyang University Guri Hospital, Guri, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Seon-Cheol Park
- Department of Psychiatry, Hanyang University Guri Hospital, Guri, Republic of Korea.
- Department of Psychiatry, Hanyang University College of Medicine, Seoul, Republic of Korea.
| | - Yong-Ku Kim
- Department of Psychiatry, Korea University Ansan Hospital, Ansan, Republic of Korea
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13
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Xiao HH, Zhu YX, Lu L, Zhou LP, Poon CCW, Chan CO, Wang LJ, Cao S, Yu WX, Wong KY, Mok DKW, Wong MS. The Lignan-Rich Fraction from Sambucus williamsii Hance Exerts Bone Protective Effects via Altering Circulating Serotonin and Gut Microbiota in Rats. Nutrients 2022; 14:nu14224718. [PMID: 36432403 PMCID: PMC9692752 DOI: 10.3390/nu14224718] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/20/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022] Open
Abstract
Our previous study revealed that the bone anabolic effects of the lignan-rich fraction (SWCA) from Sambucus williamsii Hance was involved in modulating the metabolism of tryptophan in vivo and inhibiting serotonin (5-HT) synthesis in vitro. This study aimed to determine how SWCA modulates bone metabolism via serotonin in vivo. The effects of SWCA were evaluated by using 4-month-old Sprague-Dawley (SD) ovariectomized rats. The serum levels of 5-HT and kynurenine, the protein expressions of tryptophan hydroxylase 1 (TPH-1) and TPH-2, the genes and proteins related to the 5-HT signaling pathway as well as gut microbiota composition were determined. SWCA treatment alleviated bone loss and decreased serum levels of serotonin, which was negatively related to bone mineral density (BMD) in rats. It suppressed the protein expression of TPH-1 in the colon, and reversed the gene and protein expressions of FOXO1 and ATF4 in the femur in OVX rats, while it did not affect the TPH-2 protein expression in the cortex. SWCA treatment escalated the relative abundance of Antinobacteria and modulated several genera relating to BMD. These findings verified that the bone protective effects of lignans were mediated by serotonin, and provided evidence that lignans might be a good source of TPH-1 inhibitors.
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Affiliation(s)
- Hui-Hui Xiao
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
- Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hong Kong, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Yu-Xin Zhu
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Lu Lu
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Li-Ping Zhou
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
- School of Optometry, The Hong Kong Polytechnic University, Hong Kong, China
| | - Christina Chui-Wa Poon
- Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hong Kong, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Chi-On Chan
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Li-Jing Wang
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Sisi Cao
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Wen-Xuan Yu
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Ka-Ying Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
- Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong, China
| | - Daniel Kam-Wah Mok
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
- Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hong Kong, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
| | - Man-Sau Wong
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation), The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
- Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hong Kong, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
- Correspondence: ; Tel.: +852-34008665
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14
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Gong X, Chang R, Zou J, Tan S, Huang Z. The role and mechanism of tryptophan - kynurenine metabolic pathway in depression. Rev Neurosci 2022; 34:313-324. [PMID: 36054612 DOI: 10.1515/revneuro-2022-0047] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 07/13/2022] [Indexed: 12/22/2022]
Abstract
Major depressive disorder (MDD) is a common mental illness characterized by persistent low mood and anhedonia, normally accompanied with cognitive impairment. Due to its rising incidence and high rate of recurrence and disability, MDD poses a substantial threat to patients' physical and mental health, as well as a significant economic cost to society. However, the etiology and pathogenesis of MDD are still unclear. Chronic inflammation may cause indoleamine-2,3-dioxygenase (IDO) to become overactive throughout the body and brain, resulting in excess quinolinic acid (QUIN) and less kynuric acid (KYNA) in the brain. QUIN's neurotoxicity damages glial cells and neurons, accelerates neuronal apoptosis, hinders neuroplasticity, and causes depression due to inflammation. Therefore, abnormal TRP-KYN metabolic pathway and its metabolites have been closely related to MDD, suggesting changes in the TRP-KYN metabolic pathway might contribute to MDD. In addition, targeting TRP-KYN with traditional Chinese medicine showed promising treatment effects for MDD. This review summarizes the recent studies on the TRP-KYN metabolic pathway and its metabolites in depression, which would provide a theoretical basis for exploring the etiology and pathogenesis of depression.
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Affiliation(s)
- Xiaoli Gong
- Department of Clinical Laboratory, Fifth Affiliated Hospital, Southern Medical University, Guangzhou 510900, China
| | - Rui Chang
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, 28 W. Chang Sheng Road, Hengyang 421001, Hunan, China
| | - Ju Zou
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, 28 W. Chang Sheng Road, Hengyang 421001, Hunan, China
| | - Sijie Tan
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, 28 W. Chang Sheng Road, Hengyang 421001, Hunan, China
| | - Zeyi Huang
- Department of Clinical Laboratory, Fifth Affiliated Hospital, Southern Medical University, Guangzhou 510900, China.,Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, 28 W. Chang Sheng Road, Hengyang 421001, Hunan, China
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15
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Feng L, Xing H, Zhang K. The therapeutic potential of traditional Chinese medicine in depression: Targeting adult hippocampal neurogenesis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 98:153980. [PMID: 35152089 DOI: 10.1016/j.phymed.2022.153980] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 01/22/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Depression is a common mental disorder characterized by persistent sadness and lack of interest or pleasure in previously rewarding or enjoyable activities. Understandably, the causes of depression are complex. Nevertheless, the understanding of depression pathophysiology has progressed considerably and numerous studies indicate that hippocampal neurogenesis plays a pivotal role. However, no drugs specifically targeting hippocampal neurogenesis yet exist. Meanwhile, the effects of traditional Chinese medicine (TCM) on hippocampal neurogenesis have received increasing attention in the field of antidepressant treatment because of its multi-ingredient, multi-target, and holistic view. However, the effects and mechanisms of TCM on hippocampal neurogenesis in clinical trials and pharmaceutical studies remain to be comprehensively delineated. PURPOSE To summarize the importance of hippocampal neurogenesis in depression and illustrate the targets and mechanisms of hippocampal neurogenesis regulation that underlie the antidepressant effects of TCM. METHOD A systematic review of clinical trials and studies ending by January 2022 was performed across eight electronic databases (Web of Science, PubMed, SciFinder, Research Gate, ScienceDirect, Google Scholar, Scopus and China Knowledge Infrastructure) according to the PRISMA criteria, using the search terms 'traditional Chinese medicine' "AND" 'depression' "OR" 'hippocampal neurogenesis' "OR" 'multi-ingredient' "OR" 'multi-target'. RESULTS Numerous studies show that hippocampal neurogenesis is attenuated in depression, and that antidepressants act by enhancing hippocampal neurogenesis. Moreover, compound Chinese medicine (CCM), Chinese meteria medica (CMM), and major bioactive components (MBCs) can promote hippocampal neurogenesis exerting antidepressant effects through modulation of neurotransmitters and receptors, neurotrophins, the hypothalamic-pituitary-adrenal axis, inflammatory factors, autophagy, and gut microbiota. CONCLUSION We have comprehensively summarized the effect and mechanism of TCM on hippocampal neurogenesis in depression providing a unique perspective on the use of TCM in the antidepressant field. TCM has the characteristics and advantages of multiple targets and high efficacy, showing great potential in the field of depression treatment.
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Affiliation(s)
- Lijin Feng
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hang Xing
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Kuo Zhang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, China; Tianjin UBasio Biotechnology Group, Tianjin 300457, China.
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16
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Lin YT, Shi QQ, Zhang L, Yue CP, He ZJ, Li XX, He QJ, Liu Q, Du XB. Hydrogen-rich water ameliorates neuropathological impairments in a mouse model of Alzheimer's disease through reducing neuroinflammation and modulating intestinal microbiota. Neural Regen Res 2022; 17:409-417. [PMID: 34269217 PMCID: PMC8464006 DOI: 10.4103/1673-5374.317992] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/19/2020] [Accepted: 03/18/2021] [Indexed: 11/04/2022] Open
Abstract
Hydrogen exhibits the potential to treat Alzheimer's disease. Stereotactic injection has been previously used as an invasive method of administering active hydrogen, but this method has limitations in clinical practice. In this study, triple transgenic (3×Tg) Alzheimer's disease mice were treated with hydrogen-rich water for 7 months. The results showed that hydrogen-rich water prevented synaptic loss and neuronal death, inhibited senile plaques, and reduced hyperphosphorylated tau and neurofibrillary tangles in 3×Tg Alzheimer's disease mice. In addition, hydrogen-rich water improved brain energy metabolism disorders and intestinal flora imbalances and reduced inflammatory reactions. These findings suggest that hydrogen-rich water is an effective hydrogen donor that can treat Alzheimer's disease. This study was approved by the Animal Ethics and Welfare Committee of Shenzhen University, China (approval No. AEWC-20140615-002) on June 15, 2014.
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Affiliation(s)
- Yi-Tong Lin
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Qing-Qing Shi
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Lei Zhang
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Cai-Ping Yue
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Zhi-Jun He
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Xue-Xia Li
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Qian-Jun He
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Qiong Liu
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
| | - Xiu-Bo Du
- College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen University, Shenzhen, Guangdong Province, China
- Shenzhen Bay Laboratory, Shenzhen, Guangdong Province, China
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17
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Tena-Garitaonaindia M, Arredondo-Amador M, Mascaraque C, Asensio M, Marin JJG, Martínez-Augustin O, Sánchez de Medina F. MODULATION OF INTESTINAL BARRIER FUNCTION BY GLUCOCORTICOIDS: LESSONS FROM PRECLINICAL MODELS. Pharmacol Res 2022; 177:106056. [PMID: 34995794 DOI: 10.1016/j.phrs.2022.106056] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/22/2021] [Accepted: 01/01/2022] [Indexed: 12/15/2022]
Abstract
Glucocorticoids (GCs) are widely used drugs for their anti-inflammatory and immunosuppressant effects, but they are associated with multiple adverse effects. Despite their frequent oral administration, relatively little attention has been paid to the effects of GCs on intestinal barrier function. In this review, we present a summary of the published studies on this matter carried out in animal models and cultured cells. In cultured intestinal epithelial cells, GCs have variable effects in basal conditions and generally enhance barrier function in the presence of inflammatory cytokines such as tumor necrosis factor (TNF). In turn, in rodents and other animals, GCs have been shown to weaken barrier function, with increased permeability and lower production of IgA, which may account for some features observed in stress models. When given to animals with experimental colitis, barrier function may be debilitated or strengthened, despite a positive anti-inflammatory activity. In sepsis models, GCs have a barrier-enhancing effect. These effects are probably related to the inhibition of epithelial cell proliferation and wound healing, modulation of the microbiota and mucus production, and interference with the mucosal immune system. The available information on underlying mechanisms is described and discussed.
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Affiliation(s)
- Mireia Tena-Garitaonaindia
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - María Arredondo-Amador
- Department of Pharmacology, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Cristina Mascaraque
- Department of Pharmacology, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Maitane Asensio
- Experimental Hepatology and Drug Targeting (HEVEPHARM), University of Salamanca, Institute for Biomedical Research of Salamanca (IBSAL), Salamanca, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Jose J G Marin
- Experimental Hepatology and Drug Targeting (HEVEPHARM), University of Salamanca, Institute for Biomedical Research of Salamanca (IBSAL), Salamanca, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Fermín Sánchez de Medina
- Department of Pharmacology, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain.
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18
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Yang HL, Li MM, Zhou MF, Xu HS, Huan F, Liu N, Gao R, Wang J, Zhang N, Jiang L. Links Between Gut Dysbiosis and Neurotransmitter Disturbance in Chronic Restraint Stress-Induced Depressive Behaviours: the Role of Inflammation. Inflammation 2021; 44:2448-2462. [PMID: 34657991 DOI: 10.1007/s10753-021-01514-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 10/20/2022]
Abstract
Accumulating evidence has shown that inflammation, the gut microbiota, and neurotransmitters are closely associated with the pathophysiology of depression. However, the links between the gut microbiota and neurotransmitter metabolism remain poorly understood. The present study aimed to investigate the neuroinflammatory reactions in chronic restraint stress (CRS)-induced depression and to delineate the potential links between the gut microbiota and neurotransmitter metabolism. C57BL/6 mice were subjected to chronic restraint stress for 5 weeks, followed by behavioural tests (the sucrose preference test, forced swim test, open field test, and elevated plus maze) and analysis. The results showed that CRS significantly increased interleukin-1 beta (IL-1β), interleukin-2 (IL-2), interleukin-6 (IL-6), and tumour necrosis factor α (TNFα) levels and decreased brain-derived neurotrophic factor (BDNF) expression, accompanied by the activation of IkappaB-alpha-phosphorylation-nuclear factor kappa-B (IκBα-p-NF-κB) signalling in the mouse hippocampus. In addition, the neurotransmitter metabolomics results showed that CRS resulted in decreased levels of plasma 5-hydroxytryptamine (5-HT), dopamine (DA), and noradrenaline (NE) and their corresponding metabolites, and gut microbiota faecal metabolites with the 16S rRNA gene sequencing indicated that CRS caused marked microbiota dysbiosis in mice, with a significant increase in Helicobacter, Lactobacillus, and Oscillibacter and a decrease in Parabacteroides, Ruminococcus, and Prevotella. Notably, CRS-induced depressive behaviours and the disturbance of neurotransmitter metabolism and microbiota dysbiosis can be substantially restored by dexamethasone (DXMS) administration. Furthermore, a Pearson heatmap focusing on correlations between the microbiota, behaviours, and neurotransmitters showed that Helicobacter, Lactobacillus, and Oscillibacter were positively correlated with depressive behaviours but were negatively correlated with neurotransmitter metabolism, and Parabacteroides and Ruminococcus were negatively correlated with depressive behaviours but were positively correlated with neurotransmitter metabolism. Taken together, the results suggest that inflammation is involved in microbiota dysbiosis and the disturbance of neurotransmitter metabolism in CRS-induced depressive changes, and the delineation of the potential links between the microbiota and neurotransmitter metabolism will provide novel strategies for depression treatment.
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Affiliation(s)
- Hai-Long Yang
- Department of Psychiatry, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Meng-Meng Li
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, 215008, China
| | - Man-Fei Zhou
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Huai-Sha Xu
- Department of Psychiatry, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Fei Huan
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Na Liu
- Department of Medical Psychology, Nanjing Medical University, Nanjing Brain Hospital, 210029, Nanjing, China
| | - Rong Gao
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Jun Wang
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Ning Zhang
- Department of Medical Psychology, Nanjing Medical University, Nanjing Brain Hospital, 210029, Nanjing, China.
| | - Lei Jiang
- Department of Emergency, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
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19
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Gao J, Zhou N, Wu Y, Lu M, Wang Q, Xia C, Zhou M, Xu Y. Urinary metabolomic changes and microbiotic alterations in presenilin1/2 conditional double knockout mice. J Transl Med 2021; 19:351. [PMID: 34399766 PMCID: PMC8365912 DOI: 10.1186/s12967-021-03032-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/07/2021] [Indexed: 12/13/2022] Open
Abstract
Background Given the clinical low efficient treatment based on mono-brain-target design in Alzheimer’s disease (AD) and an increasing emphasis on microbiome-gut-brain axis which was considered as a crucial pathway to affect the progress of AD along with metabolic changes, integrative metabolomic signatures and microbiotic community profilings were applied on the early age (2-month) and mature age (6-month) of presenilin1/2 conditional double knockout (PS cDKO) mice which exhibit a series of AD-like phenotypes, comparing with gender and age-matched C57BL/6 wild-type (WT) mice to clarify the relationship between microbiota and metabolomic changes during the disease progression of AD. Materials and methods Urinary and fecal samples from PS cDKO mice and gender-matched C57BL/6 wild-type (WT) mice both at age of 2 and 6 months were collected. Urinary metabolomic signatures were measured by the gas chromatography-time-of-flight mass spectrometer, as well as 16S rRNA sequence analysis was performed to analyse the microbiota composition at both ages. Furthermore, combining microbiotic functional prediction and Spearman’s correlation coefficient analysis to explore the relationship between differential urinary metabolites and gut microbiota. Results In addition to memory impairment, PS cDKO mice displayed metabolic and microbiotic changes at both of early and mature ages. By longitudinal study, xylitol and glycine were reduced at both ages. The disturbed metabolic pathways were involved in glycine, serine and threonine metabolism, glyoxylate and dicarboxylate metabolism, pentose and glucuronate interconversions, starch and sucrose metabolism, and citrate cycle, which were consistent with functional metabolic pathway predicted by the gut microbiome, including energy metabolism, lipid metabolism, glycan biosynthesis and metabolism. Besides reduced richness and evenness in gut microbiome, PS cDKO mice displayed increases in Lactobacillus, while decreases in norank_f_Muribaculaceae, Lachnospiraceae_NK4A136_group, Mucispirillum, and Odoribacter. Those altered microbiota were exceedingly associated with the levels of differential metabolites. Conclusions The urinary metabolomics of AD may be partially mediated by the gut microbiota. The integrated analysis between gut microbes and host metabolism may provide a reference for the pathogenesis of AD. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03032-9.
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Affiliation(s)
- Jie Gao
- Department of Physiology, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China.,Department of Rehabilitation Medicine, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Nian Zhou
- Center for Chinese Medicine Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Pudong District, Shanghai, 201203, China
| | - Yongkang Wu
- Department of Physiology, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Mengna Lu
- Center for Chinese Medicine Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Pudong District, Shanghai, 201203, China.,School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Qixue Wang
- Center for Chinese Medicine Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Pudong District, Shanghai, 201203, China
| | - Chenyi Xia
- Department of Physiology, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Mingmei Zhou
- Center for Chinese Medicine Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Pudong District, Shanghai, 201203, China.
| | - Ying Xu
- Department of Physiology, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China.
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20
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Li DP, Cui M, Tan F, Liu XY, Yao P. High Red Meat Intake Exacerbates Dextran Sulfate-Induced Colitis by Altering Gut Microbiota in Mice. Front Nutr 2021; 8:646819. [PMID: 34355008 PMCID: PMC8329097 DOI: 10.3389/fnut.2021.646819] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 06/22/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a serious hazard to public health, but the precise etiology of the disease is unclear. High intake of red meat diet is closely related to the occurrence of IBD. In this study, we investigated whether the high intake of red meat can increase the sensitivity of colitis and the underlying mechanism. Mice were fed with different levels of red meat for 8 weeks and then the colonic contents were analyzed by 16S rRNA sequencing. Then 3% dextran sulfate sodium was used to induce colitis in mice. We observed the severity of colitis and inflammatory cytokines. We found that high-dose red meat caused intestinal microbiota disorder, reduced the relative abundance of Lachnospiraceae_NK4A136_group, Faecalibaculum, Blautia and Dubosiella, and increased the relative abundance of Bacteroides and Alistipes. This in turn leads to an increase in colitis and inflammatory cytokine secretion. Moreover, we found that high red meat intake impaired the colon barrier integrity and decreased the expression of ZO-1, claudin, and occludin. We also found high red meat intake induced the production of more inflammatory cytokines such as IL-1β, TNF-α, IL-17, and IL-6 and inflammatory inducible enzymes such as COX-2 and iNOS in dextran sulfate sodium-induced colitis. These results suggest that we should optimize the diet and reduce the intake of red meat to prevent the occurrence of IBD.
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Affiliation(s)
- Dan-Ping Li
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
| | - Min Cui
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
| | - Fang Tan
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
| | - Xiao-Yan Liu
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
| | - Ping Yao
- Department of Gastroenterology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
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21
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Kumar P, Lee JH, Lee J. Diverse roles of microbial indole compounds in eukaryotic systems. Biol Rev Camb Philos Soc 2021; 96:2522-2545. [PMID: 34137156 PMCID: PMC9290978 DOI: 10.1111/brv.12765] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 02/06/2023]
Abstract
Indole and its derivatives are widespread across different life forms, functioning as signalling molecules in prokaryotes and with more diverse roles in eukaryotes. A majority of indoles found in the environment are attributed to bacterial enzymes converting tryptophan into indole and its derivatives. The involvement of indoles among lower organisms as an interspecies and intraspecies signal is well known, with many reports showing that inter‐kingdom interactions involving microbial indole compounds are equally important as they influence defence systems and even the behaviour of higher organisms. This review summarizes recent advances in our understanding of the functional properties of indole and indole derivatives in diverse eukaryotes. Furthermore, we discuss current perspectives on the role of microbial indoles in human diseases such as diabetes, obesity, atherosclerosis, and cancers. Deciphering the function of indoles as biomarkers of metabolic state will facilitate the formulation of diet‐based treatments and open unique therapeutic opportunities.
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Affiliation(s)
- Prasun Kumar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
| | - Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
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22
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Liu L, Zou Z, Yang J, Li X, Zhu B, Zhang H, Sun Y, Zhang Y, Zhang ZJ, Wang W. Jianpi Jieyu Decoction, An Empirical Herbal Formula, Exerts Psychotropic Effects in Association With Modulation of Gut Microbial Diversity and GABA Activity. Front Pharmacol 2021; 12:645638. [PMID: 33935741 PMCID: PMC8079981 DOI: 10.3389/fphar.2021.645638] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/15/2021] [Indexed: 12/16/2022] Open
Abstract
Background: Recent studies suggest that gut microbiota was associated with the bidirectional gut-brain axis which could modulate neuropsychological functions of the central nervous system. Gut microbiota could produce gamma aminobutyric acid (GABA) that could modulate the gut-brain axis response. Jianpi Jieyu (JPJY) decoction, a traditional Chinese formula, is mainly composed of Astragalus membranaxeus and Radix Pseudostellariae. Although the JPJY decoction has been used to treat the depression in China, the potential action of its antidepressant has not been well understood. Thus this study was aim to investigate the role of JPJY improve gut microbiota homeostasis in the chronic stress induced depressive mice. Methods: The antidepressant effect of JPJY on chronic unpredictable mild stress (CUMS) mice was evaluated by using sucrose preference test, tail suspension test and forced swim test. Fatigue-like behaviors were evaluated using degree of redness, grip strength test, and exhaustive swimming test. The new object recognition test was used to evaluate cognition performance. Fecal samples were collected and taxonomical analysis of intestinal microbial distribution was conducted with 16S rDNA. Serum level of GABA was measured using high performance liquid chromatography (HPLC). The expression of GluR1 and p-Tau protein in the hippocampus was determined using Western blotting. Results: The dose of 9.2 g/kg JPJY produced antidepressant-like effects. JPJY and its major components also modulated gut microbiota diversity in the CUMS mice. Serum level of GABA and the expressions of hippocampal GluR1 and p-Tau were reversed after the administration of JPJY in CUMS mice. Conclusion: JPJY regulates gut microbiota to produce antidepressant-like effect and improve cognition deficit in depressive mice while its molecular mechanism possibly be enhanced NR1 and Tau expression in hippocampus and increased GABA in serum.
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Affiliation(s)
- Lanying Liu
- Department of Psychiatry, Tongde Hospital of Zhejiang Province, Hangzhou, China.,Mental Health Center of Zhejiang Province, Hangzhou, China
| | - Zhilu Zou
- College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, China
| | - Jiangwei Yang
- Department of Psychiatry, Tongde Hospital of Zhejiang Province, Hangzhou, China.,Mental Health Center of Zhejiang Province, Hangzhou, China
| | - Xiaoqi Li
- Key Laboratory of Integrative Biomedicine of Brain Diseases, Nanjing University of Chinese Medicine, Nanjing, China
| | - Boran Zhu
- Key Laboratory of Integrative Biomedicine of Brain Diseases, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hailou Zhang
- Key Laboratory of Integrative Biomedicine of Brain Diseases, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yan Sun
- Key Laboratory of Integrative Biomedicine of Brain Diseases, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuxuan Zhang
- Key Laboratory of Integrative Biomedicine of Brain Diseases, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhang-Jin Zhang
- School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Wei Wang
- Key Laboratory of Integrative Biomedicine of Brain Diseases, Nanjing University of Chinese Medicine, Nanjing, China
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23
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Więdłocha M, Marcinowicz P, Janoska-Jaździk M, Szulc A. Gut microbiota, kynurenine pathway and mental disorders - Review. Prog Neuropsychopharmacol Biol Psychiatry 2021; 106:110145. [PMID: 33203568 DOI: 10.1016/j.pnpbp.2020.110145] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 02/08/2023]
Abstract
The intestine and the gut-associated limphoid tissue constitute the largest immunity organ of the human body. Among several possible tryptophan metabolism routes, the kynurenine pathway can be influenced by the gut microbiota. Disturbances of gut biodiversity may cause increased gut permeability and cause systemic inflammation, also related to central nervous system. Proinflammatory cytokines induce kynurenine pathway enzymes resulting in formation of neuroactive metabolites, which are being associated with several psychiatric disorders. The kynurenine pathway may also be influenced by certain bacteria species directly. The aim of this review is to highlight the current knowledge on the interaction of gut microbiota and the central nervous system with the kynurenine pathway taken into special account. Up to date study results on specific psychiatric disorders such as schizophrenia, bipolar disorder, Alzheimer's disease, autism spectrum disorders, depression and alcoholism are presented. Available evidence suggests that toxicity of kynurenine metabolites may be reduced by adjunction of probiotics which can affect proinflammatory cytokines. Due to their potential for modulation of the kynurenine pathway, gut microbiota pose an interesting target for future therapies.
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Affiliation(s)
- Magdalena Więdłocha
- Department of Psychiatry, Faculty of Health Sciences, Medical University of Warsaw, Poland.
| | - Piotr Marcinowicz
- Department of Psychiatry, Faculty of Health Sciences, Medical University of Warsaw, Poland
| | | | - Agata Szulc
- Department of Psychiatry, Faculty of Health Sciences, Medical University of Warsaw, Poland
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24
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Guo Y, Wang L, Lu J, Jiao J, Yang Y, Zhao H, Liang Z, Zheng H. Ginsenoside Rg1 improves cognitive capability and affects the microbiota of large intestine of tree shrew model for Alzheimer's disease. Mol Med Rep 2021; 23:291. [PMID: 33649817 PMCID: PMC7930927 DOI: 10.3892/mmr.2021.11931] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 12/10/2020] [Indexed: 12/21/2022] Open
Abstract
Ginsenoside Rg1 (Rg1) is traditional Chinese medicine with neuroprotective activity. Previous studies have demonstrated that Rg1 improves Alzheimer's disease (AD) and alters gut microbiology, but its mechanism remains to be elucidated, and thus far, its use in the treatment of AD has not been satisfactory. The present study investigated the improvement effects of Rg1 and its association with the microbiota of the large intestine. Following treatment with Rg1 in AD tree shrews, the treatment group demonstrated significantly shorter escape latency and crossed a platform more frequently in a water maze test. Western blotting demonstrated that Rg1 inhibited the expression of β-secretase 1, while increasing microtubule-associated protein 2 and Fox-3 in the hippocampus. Immunohistochemical analysis revealed that Rg1 decreased the expression of amyloid β, tau phosphorylated at serine 404 and pro-apoptotic factor Bax, while increasing the expression of Bcl-2 in the hippocampus and cortex. High throughput sequencing of 16S rRNA demonstrated that Rg1 altered the microbiota abundance of the large intestine. In conclusion, Rg1 affected the expression of apoptosis proteins, possessed a neuroprotective effect and may have a close association with the microbiota of large intestine by significantly reducing the abundance of Bacteroidetes and increasing the energy requirement of tree shrews.
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Affiliation(s)
- Yuqian Guo
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Limei Wang
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Jiangli Lu
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Jianlin Jiao
- Technology Transfer Center, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Yi Yang
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Hongbin Zhao
- Department of Emergency Medicine, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650031, P.R. China
| | - Zhang Liang
- Research Management Office for Science and Technology, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Hong Zheng
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
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25
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Li X, Wu D, Niu J, Sun Y, Wang Q, Yang B, Kuang H. Intestinal Flora: A Pivotal Role in Investigation of Traditional Chinese Medicine. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2021; 49:237-268. [PMID: 33622213 DOI: 10.1142/s0192415x21500130] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Intestinal flora is essential for maintaining host health and plays a unique role in transforming Traditional Chinese Medicine (TCM). TCM, as a bodyguard, has saved countless lives and maintained human health in the long history, especially in this COVID-19 pandemic. Pains of diseases have been removed from the effective TCM therapy, such as TCM preparation, moxibustion, and acupuncture. With the development of life science and technology, the wisdom and foresight of TCM has been more displayed. Furthermore, TCM has been also inherited and developed in innovation to better realize the modernization and globalization. Nowadays, intestinal flora transforming TCM and TCM targeted intestinal flora treating diseases have been important findings in life science. More and more TCM researches showed the significance of intestinal flora. Intestinal flora is also a way to study TCM to elucidate the profound theory of TCM. Processing, compatibility, and properties of TCM are well demonstrated by intestinal flora. Thus, it is no doubt that intestinal flora is a core in TCM study. The interaction between intestinal flora and TCM is so crucial for host health. Therefore, it is necessary to sum up the latest results in time. This paper systematically depicted the profile of TCM and the importance of intestinal flora in host. What is more, we comprehensively summarized and discussed the latest progress of the interplay between TCM and intestinal flora to better reveal the core connotation of TCM.
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Affiliation(s)
- Xiao Li
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
| | - Dan Wu
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
| | - Jingjie Niu
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
| | - Yanping Sun
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
| | - Qiuhong Wang
- Department of Natural Medicinal Chemistry, College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
| | - Bingyou Yang
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
| | - Haixue Kuang
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin 150040, P. R. China
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26
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Updated review of research on the gut microbiota and their relation to depression in animals and human beings. Mol Psychiatry 2020; 25:2759-2772. [PMID: 32332994 DOI: 10.1038/s41380-020-0729-1] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 02/06/2023]
Abstract
The gut microbiota are being called the human "second brain," as they play a key role in the regulation of the central nervous system (CNS). Recent findings provide strong evidence for the presence of bidirectional communication networks between the gut microbiota and the CNS, and such crosstalk has been correlated with alterations in major depressive disorder (MDD) and other psychiatric disorders. Further, germ-free animal models have been used to investigate the effect of the microbiota on MDD and other psychiatric disorders, which have greatly expanded our knowledge of the role of the microbiota in the etiology of MDD and promoted causality studies of this psychiatric disorder and others as well. In this review, we first introduce the methodological approaches used for microbiota research and then provide an overview of current research progress on the modulatory function and composition of the gut microbiota in MDD and the therapeutic effect of probiotics that has been gained using data from human studies as well as animal experiments. Future research should focus on identification and characterization of specific bacterial strains involved in MDD with the hope of applying these findings in the prevention and treatment of MDD.
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27
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Li Q, Guo L, Wang L, Miao J, Cui H, Li L, Geng K, Zhao L, Sun X, Jia J, Bian Y. Composition of "gold juice" using an ancient method based on intestinal microecology. J Int Med Res 2020; 48:300060520931288. [PMID: 32993381 PMCID: PMC7545780 DOI: 10.1177/0300060520931288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Objective To identify potentially effective bacterial components of gold juice, a traditional Chinese medicine treatment used for fecal microbiota transplantation. Methods Fecal samples were collected from five healthy children (two boys and three girls; mean age, 7.52 ± 2.31 years). The children had no history of antibiotic use or intestinal microecological preparation in the preceding 3 months. Fresh fecal samples were collected from children to prepare gold juice in mid-to-late November, in accordance with traditional Chinese medicine methods, then used within 7 days. Finally, 16S rDNA sequence analysis was used to identify potentially effective bacterial components of gold juice. QIIME software was used for comparisons of microbial species among gold juice, diluent, filtrate, and loess samples. Results Microflora of gold juice exhibited considerable changes following “ancient method” processing. Microbial components significantly differed between gold juice and filtrate samples. The gold juice analyzed in our study consisted of microbes that synthesize carbohydrates and amino acids by degrading substances, whereas the filtrate contained probiotic flora, Bacteroides, and Prevotella 9. Conclusions This study of microbial components in gold juice and filtrate provided evidence regarding effective bacterial components in gold juice, which may aid in clinical decisions concerning fecal microbiota transplantation.
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Affiliation(s)
- Qiuwei Li
- Tianjin Second People's Hospital, Tianjin, China
| | - Liying Guo
- Tianjin Second People's Hospital, Tianjin, China
| | - Li Wang
- Tianjin Second People's Hospital, Tianjin, China
| | - Jing Miao
- Tianjin Second People's Hospital, Tianjin, China
| | - Huantian Cui
- Integrative Medicine Institute, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Li Li
- Integrative Medicine Institute, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Kan Geng
- Shanghai Ooyi Biomedical Technology Co. Ltd., Shanghai, China
| | - Licong Zhao
- Integrative Medicine Institute, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoxue Sun
- Integrative Medicine Institute, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jianwei Jia
- Tianjin Second People's Hospital, Tianjin, China
| | - Yuhong Bian
- Integrative Medicine Institute, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Wang Y, Qin S, Jia J, Huang L, Li F, Jin F, Ren Z, Wang Y. Intestinal Microbiota-Associated Metabolites: Crucial Factors in the Effectiveness of Herbal Medicines and Diet Therapies. Front Physiol 2019; 10:1343. [PMID: 31736775 PMCID: PMC6828839 DOI: 10.3389/fphys.2019.01343] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 10/09/2019] [Indexed: 12/14/2022] Open
Abstract
Although the efficacy of herbal medicines (HMs) and traditional Chinese medicines (TCMs) in human diseases has long been recognized, their development has been hindered in part by a lack of a comprehensive understanding of their mechanisms of action. Indeed, most of the compounds extracted from HMs can be metabolized into specific molecules by host microbiota and affect pharmacokinetics and toxicity. Moreover, HMs modulate the constitution of host intestinal microbiota to maintain a healthy gut ecology. Dietary interventions also show great efficacy in treating some refractory diseases, and the commensal microbiota potentially has significant implications for the high inter-individual differences observed in such responses. Herein, we mainly discuss the contribution of the intestinal microbiota to high inter-individual differences in response to HMs and TCMs, and especially the already known metabolites of the HMs produced by the intestinal microbiota. The contribution of commensal microbiota to the inter-individual differences in response to dietary therapy is also briefly discussed. This review highlights the significance of intestinal microbiota-associated metabolites to the efficiency of HMs and dietary interventions. Our review may help further identify the mechanisms leading to the inter-individual differences in the effectiveness of HM and dietary intervention from the perspective of their interactions with the intestinal microbiota.
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Affiliation(s)
- Yiliang Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Shurong Qin
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Jiaoyan Jia
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Lianzhou Huang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Feng Li
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Fujun Jin
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, China
| | - Zhe Ren
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
- Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
- Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
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Getachew B, Tizabi Y. Effects of C-Terminal Domain of the Heavy Chain of Tetanus Toxin on Gut Microbiota in a Rat Model of Depression. CLINICAL PHARMACOLOGY AND TRANSLATIONAL MEDICINE 2019; 3:152-159. [PMID: 32159077 PMCID: PMC7063687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND/AIMS It is now well established that imbalance or dysbiosis in the gut microbiota (GM) plays a significant role in neuropsychiatric/neurodegenerative disorders. Recently it has been reported that the C-terminal domain of the heavy chain of tetanus toxin (Hc-TeTx) may not only act as a neuroprotectant but may also exhibit antidepressant effects in Wistar-Kyoto (WKY) rats, a putative animal model of treatment-resistant depression. The aim of this study was to determine whether Hc-TeTx may also interact with GM implicated in mood regulation in these rats. METHODS Adult male WKY rats (5/group) were injected intramuscularly (IM) with 60 μg/kg Hc-TeTx or saline. Twenty-four hours after the injection, the animals were sacrificed, intestinal stools were collected and stored at -80°C. DNA was extracted from the samples for 16S rRNA gene-based microbiota analysis using 16S Metagenomics application. RESULTS Abundance of several bacteria at different taxonomic levels were distinguished between Hc-TeTx group and the control. At species-level, 11 operational taxonomic units (OTUs), particularly Bifidobacterium cholerium, a bacterium with a strong ability to degrade resistant starch, were enriched (69 fold) in the Hc-TeTx group. In addition, 5 species of probiotic Lactobacillus, two butyrate-forming species Sarcina, Butyrivibro proteovlasticus and Roseburia faecis, were enhanced by a minimum of 2-fold in Hc-TeTx group. In contrast, 24 species including five species of pathogenic Provettela (5-14 fold), two mucin-degrading Akkermansia muciniphila and Mucispirillum schaedleri, and four species of pathogenic Ruminoccus were reduced by a minimum of 2-fold by Hc-TeTx treatment. CONCLUSION Hc-TeTx enhanced probiotic species and suppressed the opportunistic pathogens. Since overall effect of Hc-TeTx appears to be promoting GM associated with mood enhancement (e.g. Bifidobacterium, Butyrivibro, and Lactobacillus) and suppressing GM associated with mood dysregulation (e.g. Mucispirillum, Provettela, and Ruminoccus) a novel mechanism of beneficial effects of Hc-TeTx may involve normalization of dysbiosis.
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Affiliation(s)
- Bruk Getachew
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, USA
| | - Yousef Tizabi
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, USA
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An X, Bao Q, Di S, Zhao Y, Zhao S, Zhang H, Lian F, Tong X. The interaction between the gut Microbiota and herbal medicines. Biomed Pharmacother 2019; 118:109252. [DOI: 10.1016/j.biopha.2019.109252] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 12/14/2022] Open
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