1
|
Lan YW, Chen YC, Yen CC, Chen HL, Tung MC, Fan HC, Chen CM. Kefir peptides mitigate bleomycin-induced pulmonary fibrosis in mice through modulating oxidative stress, inflammation and gut microbiota. Biomed Pharmacother 2024; 174:116431. [PMID: 38522238 DOI: 10.1016/j.biopha.2024.116431] [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: 12/30/2023] [Revised: 03/05/2024] [Accepted: 03/15/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a progressive and life-threatening lung disease with high mortality rates. The limited availability of effective drugs for IPF treatment, coupled with concerns regarding adverse effects and restricted responsiveness, underscores the need for alternative approaches. Kefir peptides (KPs) have demonstrated antioxidative, anti-inflammatory, and antifibrotic properties, along with the capability to modulate gut microbiota. This study aims to investigate the impact of KPs on bleomycin-induced pulmonary fibrosis. METHODS Mice were treated with KPs for four days, followed by intratracheal injection of bleomycin for 21 days. Comprehensive assessments included pulmonary functional tests, micro-computed tomography (µ-CT), in vivo image analysis using MMPsense750, evaluation of inflammation- and fibrosis-related gene expression in lung tissue, and histopathological examinations. Furthermore, a detailed investigation of the gut microbiota community was performed using full-length 16 S rRNA sequencing in control mice, bleomycin-induced fibrotic mice, and KPs-pretreated fibrotic mice. RESULTS In KPs-pretreated bleomycin-induced lung fibrotic mice, notable outcomes included the absence of significant bodyweight loss, enhanced pulmonary functions, restored lung tissue architecture, and diminished thickening of inter-alveolar septa, as elucidated by morphological and histopathological analyses. Concurrently, a reduction in the expression levels of oxidative biomarkers, inflammatory factors, and fibrotic indicators was observed. Moreover, 16 S rRNA sequencing demonstrated that KPs pretreatment induced alterations in the relative abundances of gut microbiota, notably affecting Barnesiella_intestinihominis, Kineothrix_alysoides, and Clostridium_viride. CONCLUSIONS Kefir peptides exerted preventive effects, protecting mice against bleomycin-induced lung oxidative stress, inflammation, and fibrosis. These effects are likely linked to modifications in the gut microbiota community. The findings highlight the therapeutic potential of KPs in mitigating pulmonary fibrosis and advocate for additional exploration in clinical settings.
Collapse
Affiliation(s)
- Ying-Wei Lan
- Department of Life Sciences, College of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan; Phoenix Children's Health Research Institute, Department of Child Health, University of Arizona College of Medicine, Phoenix 85004, USA.
| | - Ying-Cheng Chen
- Department of Life Sciences, College of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan; Department of Basic Medical Sciences, Veterinary Medicines, Purdue University, West Lafayette, Indiana 47906, USA.
| | - Chih-Ching Yen
- Department of Life Sciences, College of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan; Department of Internal Medicine, China Medical University Hospital, Taichung 404, Taiwan.
| | - Hsiao-Ling Chen
- Department of Biomedical Science, Da-Yeh University, Changhua 515, Taiwan; Phermpep Co., Ltd., China Chemical & Pharmaceutical Group (CCPG), Taichung 42881, Taiwan
| | - Min-Che Tung
- Department of Surgery, and Tungs' Taichung Metro Harbor Hospital, Taichung 435, Taiwan
| | - Hueng-Chuen Fan
- Department of Surgery, and Tungs' Taichung Metro Harbor Hospital, Taichung 435, Taiwan
| | - Chuan-Mu Chen
- Department of Life Sciences, College of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan; The iEGG and Animal Biotechnology Research Center, National Chung Hsing University, Taichung 402, Taiwan.
| |
Collapse
|
2
|
Yan Y, Zhao QH, Xu C, Wei RQ, Jiang H, Liu SJ. Anaerolentibacter hominis gen. nov. sp. nov., Diplocloster hominis sp. nov. and Pilosibacter fragilis gen. nov. sp. nov., isolated from human faeces. Int J Syst Evol Microbiol 2024; 74. [PMID: 38687183 DOI: 10.1099/ijsem.0.006359] [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] [Indexed: 05/02/2024] Open
Abstract
Three Gram-positive, obligately anaerobic bacterial strains, namely CSJ-1T, CSJ-3T, and CSJ-4T, were isolated from faeces of healthy persons. They were characterized through a combination of whole-genome sequencing, phenotypic traits, and metabolomic analysis. The genome sizes of CSJ-1T, CSJ-4T, and CSJ-3T were 3.3, 3.8, and 6.1 Mbp, with DNA G+C contents of 47.2, 48.3, and 48.8 mol%, respectively. Strain CSJ-3T was identified as representing a novel species, Diplocloster hominis (type strain CSJ-3T=CGMCC 1.18033T=JCM 36512T) of the genus Diplocloster. The 16S rRNA gene sequence similarity and whole genome average nucleotide identity (gANI) of CSJ-4T to its closest related species, Diplocloster modestus ASD 4241T, were 98.3 and 91.4 %, respectively. Comparative analysis of 16S rRNA gene sequences showed 91.6 % similarity between CSJ-1T and its closest phylogenetic neighbour, Catenibacillus scindens DSM 106146T, and 93.3 % similarity between CSJ-4T and its closest relative strain, Clostridium fessum SNUG30386T. Based on the polyphasic taxonomic results, we proposed two novel genera and three novel species. Strain CSJ-1T was identified as representing a novel species of novel genus, Anaerolentibacter hominis gen. nov. sp. nov. (type strain CSJ-1T=CGMCC 1.18046T=JCM 36511T) of the family Lachnospiraceae, and strain CSJ-4T was identified as representing a novel species of novel genus Pilosibacter fragilis gen. nov. sp. nov. (type strain CSJ-4T=CGMCC 1.18026T= JCM 36513T) of the family Clostridiaceae.
Collapse
Affiliation(s)
- Yang Yan
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| | - Qing-Hua Zhao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| | - Chang Xu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| | - Rui-Qi Wei
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| | - He Jiang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| | - Shuang-Jiang Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| |
Collapse
|
3
|
Ye W, Fan J, Wu W, Chen Z, Huang Q, Qian L. Effects of fecal microbiota transplantation on metabolic health of DBA mice. Front Microbiol 2024; 15:1352555. [PMID: 38444807 PMCID: PMC10912182 DOI: 10.3389/fmicb.2024.1352555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/31/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction Numerous studies have demonstrated that C57BL/6 mice exhibit superior growth rates and overall growth performance compared to DBA mice. To investigate whether this discrepancy in growth performance is linked to the composition of gut microorganisms, we conducted fecal microbiome transplantation (FMT) experiments. Methods Specifically, we transplanted fecal fluids from adult C57BL/6 mice, high-fat C57BL/6 mice, and Wistar rats into weaned DBA mice (0.2mL/d), and subsequently analyzed their gut contents and gene expression through 16S rRNA sequencing and transcriptome sequencing. During the test period, C57BL/6 mice and Wistar rats were provided with a normal diet, and high-fat C57BL/6 mice were provided with a high-fat diet. Results The results of our study revealed that mice receiving FMT from all three donor groups exhibited significantly higher daily weight gain and serum triglyceride (TG) levels compared to mice of CK group. 16S rRNA sequensing unveiled substantial differences in the abundance and function of the gut microbiota between the FMT groups and the CK group. Transcriptome analysis revealed a total of 988 differential genes, consisting of 759 up-regulated genes and 187 down-regulated genes, between the three experimental groups and the CK group. Functional Gene Ontology (GO) annotation suggested that these genes were primarily linked to lipid metabolism, coagulation, and immunity. Pearson correlation analysis was performed on the differential genes and clusters, and it revealed significant correlations, mainly related to processes such as fatty acid metabolism, fat digestion and absorption, and cholesterol metabolism. Discussion In summary, FMT from dominant strains improved the growth performance of DBA mice, including body weight gain, institutional growth, and immune performance. This change may be due to the increase of probiotic content in the intestinal tract by FMT and subsequent alteration of intestinal gene expression. However, the effects of cross-species fecal transplantation on the intestinal flora and gene expression of recipient mice were not significant.
Collapse
Affiliation(s)
- Wenxin Ye
- Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Jinghui Fan
- Hangzhou Academy of Agricultural Sciences, Hangzhou, China
| | - Wenzi Wu
- Hainan Institute of Zhejiang University, Sanya, China
| | - Zhuo Chen
- Hainan Institute of Zhejiang University, Sanya, China
| | - Qixin Huang
- Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Lichun Qian
- Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, Hangzhou, China
| |
Collapse
|
4
|
Guo W, Qiu W, Zhu J, Shih CJ, Wu YC, Lai SJ, Zhou J, Zhu Z, You YT, Li Y, Chen SC. The complete genome sequence of Kineothrix sp. MB12-C1, isolated from the feces of black soldier fly larvae. Microbiol Resour Announc 2024; 13:e0100523. [PMID: 38112478 DOI: 10.1128/mra.01005-23] [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: 10/19/2023] [Accepted: 11/18/2023] [Indexed: 12/21/2023] Open
Abstract
Here, we present the complete genome sequence of Kineothrix sp. MB12-C1 (= BCRC 81406), isolated from the feces of black soldier fly (Hermetia illucens) larvae. The genome of strain MB12-C1 was chosen for further species classification and comparative genomic analysis.
Collapse
Affiliation(s)
- Wenjie Guo
- College of Environment and Resources, Fujian Normal University , Fuzhou, Fujian, China
- College of Carbon Neutral and Modern Industry, Fujian Normal University , Fuzhou, Fujian, China
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University , Sanming, Fujian, China
| | - Wanling Qiu
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
| | - Junyu Zhu
- College of Environment and Safety Engineering, Fuzhou University , Fuzhou, Fujian, China
| | - Chao-Jen Shih
- Bioresource Collection and Research Center, Food Industry Research and Development Institute , Hsinchu, Taiwan, China
| | - Yen-Chi Wu
- Bioresource Collection and Research Center, Food Industry Research and Development Institute , Hsinchu, Taiwan, China
| | - Shu-Jung Lai
- Graduate Institute of Biomedical Sciences, China Medical University , Taichung City, Taiwan, China
- Research Center for Cancer Biology, China Medical University , Taichung City, Taiwan, China
| | - Jiahui Zhou
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
| | - Zetao Zhu
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
| | - Yi-Ting You
- Department of Life Sciences, National Chung Hsing University , Taichung City, Taiwan, China
| | - Yin Li
- College of Environment and Resources, Fujian Normal University , Fuzhou, Fujian, China
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University , Sanming, Fujian, China
| | - Sheng-Chung Chen
- School of Resources and Chemical Engineering, Sanming University , Sanming, Fujian, China
- Fujian Provincial Key Laboratory of Resources and Environmental Monitoring and Sustainable Management and Utilization, Sanming University , Sanming, Fujian, China
| |
Collapse
|
5
|
Kim HJ, Jeon HJ, Kim JY, Shim JJ, Lee JH. Lactiplantibacillus plantarum HY7718 Improves Intestinal Integrity in a DSS-Induced Ulcerative Colitis Mouse Model by Suppressing Inflammation through Modulation of the Gut Microbiota. Int J Mol Sci 2024; 25:575. [PMID: 38203747 PMCID: PMC10779067 DOI: 10.3390/ijms25010575] [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: 12/13/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
Inflammatory bowel disease (IBD), a chronic condition that causes persistent inflammation in the digestive system, is closely associated with the intestinal microbiome. Here, we evaluated the effects of Lactiplantibacillus plantarum HY7718 (HY7718) on IBD symptoms in mice with dextran sulfate sodium (DSS)-induced colitis. Oral administration of HY7718 led to significant improvement in the disease activity index score and the histological index, as well as preventing weight loss, in model mice. HY7718 upregulated the expression of intestinal tight junction (TJ)-related genes and downregulated the expression of genes encoding pro-inflammatory cytokines and genes involved in the TLR/MyD88/NF-κB signaling pathway. Additionally, HY7718 reduced the blood levels of pro-inflammatory cytokines, as well as reversing DSS-induced changes to the composition of the intestinal microbiome. HY7718 also increased the percentage of beneficial bacteria (Lactiplantibacillus and Bifidobacterium), which correlated positively with the expression of intestinal TJ-related genes. Finally, HY7718 decreased the population of pathogens such as Escherichia, which correlated with IBD symptoms. The data suggest that HY7718 improves intestinal integrity in colitis model mice by regulating the expression of TJ proteins and inflammatory cytokines, as well as the composition of the intestinal microflora. Thus, L. plantarum HY7718 may be suitable as a functional supplement that improves IBD symptoms and gut health.
Collapse
Affiliation(s)
| | | | - Joo-Yun Kim
- R&BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea; (H.-J.K.); (H.-J.J.); (J.-J.S.); (J.-H.L.)
| | | | | |
Collapse
|
6
|
Li Z, Cui R, Wang YB, Luo YB, Xue PX, Tang QG, Fang MY. Specific gastrointestinal microbiota profiles in Chinese Tan sheep are associated with lauric acid content in muscle. BMC Microbiol 2023; 23:331. [PMID: 37936065 PMCID: PMC10631117 DOI: 10.1186/s12866-023-03079-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 10/21/2023] [Indexed: 11/09/2023] Open
Abstract
The biological mechanisms underlying meat quality remain unclear. Currently, many studies report that the gastrointestinal microbiota is essential for animal growth and performance. However, it is uncertain which bacterial species are specifically associated with the meat quality traits. In this study, 16S rDNA and metagenomic sequencing were performed to explore the composition and function of microbes in various gastrointestinal segments of Tan sheep and Dorper sheep, as well as the relationship between microbiota and meat quality (specifically, the fatty acid content of the muscle). In the ruminal, duodenal, and colonic microbiome, several bacteria were uniquely identified in respective breeds, including Agrobacterium tumefaciens, Bacteroidales bacterium CF, and several members of the family Oscillospiraceae. The annotation of GO, KEGG, and CAZYme revealed that these different bacterial species were linked to the metabolism of glucose, lipids, and amino acids. Additionally, our findings suggested that 16 microbial species may be essential to the content of fatty acids in the muscle, especially C12:0 (lauric acid). 4 bacterial species, including Achromobacter xylosoxidans, Mageeibacillus indolicus, and Mycobacterium dioxanotrophicus, were positively correlated with C12:0, while 13 bacteria, including Methanobrevibacter millerae, Bacteroidales bacterium CF, and Bacteroides coprosuis were negatively correlated with C12:0. In a word, this study provides a basic data for better understanding the interaction between ruminant gastrointestinal microorganisms and the meat quality traits of hosts.
Collapse
Affiliation(s)
- Zhen Li
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Ran Cui
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yu-Bei Wang
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Ya-Biao Luo
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Peng-Xiang Xue
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Qi-Guo Tang
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Mei-Ying Fang
- Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
| |
Collapse
|
7
|
Trautmann A, Schleicher L, Koch A, Günther J, Steuber J, Seifert J. A shift towards succinate-producing Prevotella in the ruminal microbiome challenged with monensin. Proteomics 2023; 23:e2200121. [PMID: 36444514 DOI: 10.1002/pmic.202200121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022]
Abstract
The time-resolved impact of monensin on the active rumen microbiome was studied in a rumen-simulating technique (Rusitec) with metaproteomic and metabolomic approaches. Monensin treatment caused a decreased fibre degradation potential that was observed by the reduced abundance of proteins assigned to fibrolytic bacteria and glycoside hydrolases, sugar transporters and carbohydrate metabolism. Decreased proteolytic activities resulted in reduced amounts of ammonium as well as branched-chain fatty acids. The family Prevotellaceae exhibited increased resilience in the presence of monensin, with a switch of the metabolism from acetate to succinate production. Prevotella species harbour a membrane-bound electron transfer complex, which drives the reduction of fumarate to succinate, which is the substrate for propionate production in the rumen habitat. Besides the increased succinate production, a concomitant depletion of methane concentration was observed upon monensin exposure. Our study demonstrates that Prevotella sp. shifts its metabolism successfully in response to monensin exposure and Prevotellaceae represents the key bacterial family stabilizing the rumen microbiota during exposure to monensin.
Collapse
Affiliation(s)
- Andrej Trautmann
- HoLMiR - Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Lena Schleicher
- HoLMiR - Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
- Institute of Biology, University of Hohenheim, Stuttgart, Germany
| | - Ariane Koch
- Institute of Biology, University of Hohenheim, Stuttgart, Germany
| | - Johannes Günther
- Core Facility Spectroscopy, University of Hohenheim, Stuttgart, Germany
| | - Julia Steuber
- HoLMiR - Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
- Institute of Biology, University of Hohenheim, Stuttgart, Germany
| | - Jana Seifert
- HoLMiR - Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| |
Collapse
|
8
|
Mendoza CS, Findlay A, Judelson HS. A Variant of LbCas12a and Elevated Incubation Temperatures Enhance the Rate of Gene Editing in the Oomycete Phytophthora infestans. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2023; 36:677-681. [PMID: 37470431 DOI: 10.1094/mpmi-05-23-0072-sc] [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: 07/21/2023]
Abstract
CRISPR-Cas editing systems have proved to be powerful tools for functional genomics research, but their effectiveness in many non-model species remains limited. In the potato and tomato pathogen Phytophthora infestans, an editing system was previously developed that expresses the Lachnospiracae bacterium Cas12a endonuclease (LbCas12a) and guide RNA from a DNA vector. However, the method works at low efficiency. Based on a hypothesis that editing is constrained by a mismatch between the optimal temperatures for P. infestans growth and endonuclease catalysis, we tested two strategies that increased the frequency of editing of two target genes by about 10-fold. First, we found that editing was boosted by a mutation in LbCas12a (D156R) that had been reported to expand its catalytic activity over a broader temperature range. Second, we observed that editing was enhanced by transiently incubating transformed tissue at a higher temperature. These modifications should make CRISPR-Cas12a more useful for interrogating gene and protein function in P. infestans and its relatives, especially species that grow optimally at lower temperatures. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
Collapse
Affiliation(s)
- Carl S Mendoza
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA 92521, U.S.A
| | - Annika Findlay
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA 92521, U.S.A
| | - Howard S Judelson
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA 92521, U.S.A
| |
Collapse
|
9
|
Fang C, Cheng J, Jia W, Xu Y. Akkermansia muciniphila Ameliorates Alcoholic Liver Disease in Experimental Mice by Regulating Serum Metabolism and Improving Gut Dysbiosis. Metabolites 2023; 13:1057. [PMID: 37887381 PMCID: PMC10608788 DOI: 10.3390/metabo13101057] [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: 09/15/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023] Open
Abstract
Alcoholic liver disease (ALD) represents a significant global health concern, yet the available treatment options remain limited. Numerous studies have shown that gut microbiota is a critical target for the treatment of ALD. Additionally, there is increasing evidence that host metabolism also plays a crucial role in the development of ALD. Akkermansia muciniphila has been demonstrated to ameliorate experimental ALD through its modulatory effects on the intestinal vascular barrier, enhancement of mucus layer thickness, and promotion of intestinal tight junction proteins. Nevertheless, there is a dearth of studies investigating the impact of A. muciniphila on host metabolism and gut microbiota. Here, C57BL/6 mice were utilized to establish a modified NIAAA model in order to investigate the impact of the oral administration of A. muciniphila during the development of ALD. Furthermore, we employed targeted metabolomics to analyze the serum metabolomic profiles of the mice and 2bRAD-M sequencing to comprehensively examine the underlying mechanisms of the efficacy of A. muciniphila on ALD. Our results illustrated that the oral administration of A. muciniphila alleviated alcohol-induced liver injury in conjunction with encouraged serum levels of ornithine and diminished the elevation of oxalic acid levels induced by alcohol intake. In addition, A. muciniphila also inhibited the proliferation of harmful bacteria, such as Escherichia coli and Helicobacter hepaticus, induced by alcohol consumption while promoting the growth of butyrate-producing and commensal bacteria, including Paramuribaculum intestinale and Bacteroides ovatus. In conclusion, this study suggests that A. muciniphila restores ALD by regulating the gut microbiota, and this corrective effect is associated with alterations in the serum metabolism. Our research supplies a theoretical basis for developing A. muciniphila as an innovative generation of probiotic for preventing and managing ALD.
Collapse
Affiliation(s)
- Cheng Fang
- Laboratory of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (C.F.); (J.C.)
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jinyan Cheng
- Laboratory of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (C.F.); (J.C.)
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Wei Jia
- Center for Translational Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, 600 Yishan Road, Shanghai 200233, China;
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Yan Xu
- Laboratory of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (C.F.); (J.C.)
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
10
|
Choi KJ, Yoon MY, Kim JE, Yoon SS. Gut commensal Kineothrix alysoides mitigates liver dysfunction by restoring lipid metabolism and gut microbial balance. Sci Rep 2023; 13:14668. [PMID: 37674003 PMCID: PMC10482948 DOI: 10.1038/s41598-023-41160-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD), previously known as Non-Alcoholic Fatty Liver Disease, is a widespread liver condition characterized by excessive fat buildup in hepatocytes without significant alcohol consumption. Manipulation of the gut microbiome has been considered to prevent and improve the occurrence and progression of MASLD, particularly through the gut-liver axis. This study aimed to investigate the correlation between the gut microbiome and liver function and determine whether the gut microbiome can ameliorate MASLD. We comparatively analyzed the gut microbiome composition between mice fed normal chow and those fed a high-fat diet and observed that the abundance of Kineothrix alysoides decreased in the high-fat group. Further analysis showed that treatment with K. alysoides in the high-fat diet group led to decreased weight loss, and MASLD attenuation. Importantly, K. alysoides treatment attenuated MASLD in mice fed a high-fat, high-fructose diet (HFHF), which can cause advanced liver damage. Furthermore, administration of K. alysoides altered the gut microbial composition in the HFHF diet group and improved MASLD. Overall, these findings demonstrate the potential of K. alysoides in restoring gut health and facilitating lipid metabolism to prevent and treat MASLD.
Collapse
Affiliation(s)
- Kyoung Jin Choi
- Department of Microbiology and Immunology, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, South Korea
- Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, South Korea
| | - Mi Young Yoon
- Department of Microbiology and Immunology, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, South Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji-Eun Kim
- Department of Microbiology and Immunology, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, South Korea.
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, South Korea.
| | - Sang Sun Yoon
- Department of Microbiology and Immunology, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, South Korea.
- Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, South Korea.
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.
- Institute of Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, South Korea.
- BioMe Inc., Seoul, South Korea.
| |
Collapse
|
11
|
Hivarkar SS, Vasudevan G, Dhakephalkar PK, Dagar SS. Description of Sporanaerobium hydrogeniformans gen. nov., sp. nov., an obligately anaerobic, hydrogen-producing bacterium isolated from Aravali hot spring in India. Arch Microbiol 2023; 205:305. [PMID: 37572166 DOI: 10.1007/s00203-023-03641-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/15/2023] [Accepted: 07/25/2023] [Indexed: 08/14/2023]
Abstract
An obligately anaerobic bacterium XHS1971T, capable of degrading cellulose and xylan, was isolated from a sediment sample of Aravali hot spring, Ratnagiri, India. Cells of strain XHS1971T were Gram-stain-negative, spore-forming, motile, long-rods. Growth was observed at temperatures 30-50 °C (optimum 40-45 °C), pH 5.0-10.0 (optimum pH 8.0) and NaCl concentrations 0-0.5% (optimum 0%). Generation time of strain XHS1971T was 5 h under optimised growth conditions. Strain XHS1971T showed the ability to metabolise different complex and simple sugars constituting lignocellulosic biomass. Glucose was fermented majorly into hydrogen, formic acid, acetic acid, and ethanol, whereas carbon dioxide, butyric acid, lactic acid and succinic acid were produced in traces. 16S rRNA gene analysis of strain XHS1971T revealed < 94.5% homology with Cellulosilyticum lentocellum DSM5427T followed by Cellulosilyticum ruminicola JCM14822T, identifying strain as a distinct member of family Lachnospiraceae. The major cellular fatty acids (> 5%) were C14:0, C16:0, C18:0, and C16:1 ω7c. The genome size of the strain was 3.74 Mb with 35.3 mol% G + C content, and genes were annotated to carbohydrate metabolism, including genes involved in the degradation of cellulose and xylan and the production of hydrogen, ethanol and acetate. The uniqueness of strain was further validated by digital DNA-DNA hybridisation (dDDH), Average Nucleotide Identity (ANI), and Average Amino Acid Identity (AAI) values of 22%, 80%, and 63%, respectively, with nearest phylogenetic affiliates. Based on the detailed analyses, we propose a new genus and species, Sporanaerobium hydrogeniformans gen. nov., sp. nov., for strain XHS1971T (= MCC3498T = KCTC15729T = JCM32657T) within family Lachnospiraceae.
Collapse
Affiliation(s)
- Sai Suresh Hivarkar
- Bioenergy Group, Agharkar Research Institute, Gopal Ganesh Agarkar Road, Pune, 411004, India
- Savitribai Phule Pune University, Ganeshkhind, Pune, India
| | - Gowdaman Vasudevan
- Bioenergy Group, Agharkar Research Institute, Gopal Ganesh Agarkar Road, Pune, 411004, India
| | - Prashant K Dhakephalkar
- Bioenergy Group, Agharkar Research Institute, Gopal Ganesh Agarkar Road, Pune, 411004, India
- Savitribai Phule Pune University, Ganeshkhind, Pune, India
| | - Sumit Singh Dagar
- Bioenergy Group, Agharkar Research Institute, Gopal Ganesh Agarkar Road, Pune, 411004, India.
- Savitribai Phule Pune University, Ganeshkhind, Pune, India.
| |
Collapse
|
12
|
Mar JS, Ota N, Pokorzynski ND, Peng Y, Jaochico A, Sangaraju D, Skippington E, Lekkerkerker AN, Rothenberg ME, Tan MW, Yi T, Keir ME. IL-22 alters gut microbiota composition and function to increase aryl hydrocarbon receptor activity in mice and humans. MICROBIOME 2023; 11:47. [PMID: 36894983 PMCID: PMC9997005 DOI: 10.1186/s40168-023-01486-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 02/01/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND IL-22 is induced by aryl hydrocarbon receptor (AhR) signaling and plays a critical role in gastrointestinal barrier function through effects on antimicrobial protein production, mucus secretion, and epithelial cell differentiation and proliferation, giving it the potential to modulate the microbiome through these direct and indirect effects. Furthermore, the microbiome can in turn influence IL-22 production through the synthesis of L-tryptophan (L-Trp)-derived AhR ligands, creating the prospect of a host-microbiome feedback loop. We evaluated the impact IL-22 may have on the gut microbiome and its ability to activate host AhR signaling by observing changes in gut microbiome composition, function, and AhR ligand production following exogenous IL-22 treatment in both mice and humans. RESULTS Microbiome alterations were observed across the gastrointestinal tract of IL-22-treated mice, accompanied by an increased microbial functional capacity for L-Trp metabolism. Bacterially derived indole derivatives were increased in stool from IL-22-treated mice and correlated with increased fecal AhR activity. In humans, reduced fecal concentrations of indole derivatives in ulcerative colitis (UC) patients compared to healthy volunteers were accompanied by a trend towards reduced fecal AhR activity. Following exogenous IL-22 treatment in UC patients, both fecal AhR activity and concentrations of indole derivatives increased over time compared to placebo-treated UC patients. CONCLUSIONS Overall, our findings indicate IL-22 shapes gut microbiome composition and function, which leads to increased AhR signaling and suggests exogenous IL-22 modulation of the microbiome may have functional significance in a disease setting. Video Abstract.
Collapse
Affiliation(s)
- Jordan S. Mar
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Present address: Biomarker Discovery OMNI, Genentech Inc., South San Francisco, CA USA
| | - Naruhisa Ota
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Present address: Biomarker Discovery OMNI, Genentech Inc., South San Francisco, CA USA
| | - Nick D. Pokorzynski
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Present address: Biomarker Discovery OMNI, Genentech Inc., South San Francisco, CA USA
| | - Yutian Peng
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Department of Infectious Diseases, Genentech Inc., South San Francisco, CA USA
| | - Allan Jaochico
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Drug Metabolism and Pharmacokinetics, Genentech Inc., South San Francisco, CA USA
| | - Dewakar Sangaraju
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Drug Metabolism and Pharmacokinetics, Genentech Inc., South San Francisco, CA USA
| | - Elizabeth Skippington
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Bioinformatics, Genentech Inc., South San Francisco, CA USA
| | - Annemarie N. Lekkerkerker
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- OMNI Biomarker Development, Genentech Inc., South San Francisco, CA USA
| | - Michael E. Rothenberg
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Early Clinical Development, Genentech Inc., South San Francisco, CA USA
| | - Man-Wah Tan
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Department of Infectious Diseases, Genentech Inc., South San Francisco, CA USA
| | - Tangsheng Yi
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Present address: Department of Immunology Discovery, Genentech Inc., South San Francisco, CA USA
| | - Mary E. Keir
- Genentech, 1 DNA Way, South San Francisco, CA 94080 USA
- Present address: Biomarker Discovery OMNI, Genentech Inc., South San Francisco, CA USA
| |
Collapse
|
13
|
Lee MH, Kim J, Kim GH, Kim MS, Yoon SS. Effects of Lactiplantibacillus plantarum FBT215 and prebiotics on the gut microbiota structure of mice. Food Sci Biotechnol 2023; 32:481-488. [PMID: 36911336 PMCID: PMC9992507 DOI: 10.1007/s10068-022-01185-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/29/2022] [Accepted: 10/05/2022] [Indexed: 12/11/2022] Open
Abstract
Imbalanced intestinal microbiota is associated with diseases, including inflammatory bowel disease and obesity, and diet can alter the structure of the gut microbiota. In this study, the effects of dietary treatments including the potential probiotic Lactiplantibacillus plantarum FBT215 with/without prebiotics on the intestinal microbiota composition of mice were investigated. Lactiplantibacillus plantarum FBT215 administration significantly decreased the Firmicutes/Bacteroidetes ratio and increased the abundance of Muribaculum and Duncaniella. The diversity within and between groups was measured according to α and β diversity metrics, respectively. The Shannon index of α diversity decreased significantly in all treatment groups except the probiotic group, although this group showed an increase in the Chao1 index. Principal coordinate analysis of β diversity showed that the groups had different species distributions. Finally, gamma-aminobutyric acid (GABA) concentration increased in groups fed L. plantarum FBT215. These findings improve our understanding of the association between the gut microbiota structure and specific probiotic/prebiotic-containing diets.
Collapse
Affiliation(s)
- Myung-Hyun Lee
- Department of Biological and Technology, Yonsei University, 1 Yeonsedae-gil, Heungeop-myeon, Wonju-si, Gangwon-do 26493 Republic of Korea
| | - Jaegon Kim
- Department of Biological and Technology, Yonsei University, 1 Yeonsedae-gil, Heungeop-myeon, Wonju-si, Gangwon-do 26493 Republic of Korea
| | - Gyeong-Hwuii Kim
- Department of Biological and Technology, Yonsei University, 1 Yeonsedae-gil, Heungeop-myeon, Wonju-si, Gangwon-do 26493 Republic of Korea
| | - Min-Sun Kim
- Department of Biological and Technology, Yonsei University, 1 Yeonsedae-gil, Heungeop-myeon, Wonju-si, Gangwon-do 26493 Republic of Korea
| | - Sung-Sik Yoon
- Department of Biological and Technology, Yonsei University, 1 Yeonsedae-gil, Heungeop-myeon, Wonju-si, Gangwon-do 26493 Republic of Korea
| |
Collapse
|
14
|
Lacto-Fermented and Unfermented Soybean Differently Modulate Serum Lipids, Blood Pressure and Gut Microbiota during Hypertension. FERMENTATION 2023. [DOI: 10.3390/fermentation9020152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Soy consumption may reduce hypertension but the impact of food processing on the antihypertensive effect is unclear. Hence, we ascertained the effects of lacto-fermented (FSB) and unfermented soybean (USB) consumption on serum atherogenic lipids, hypertension and gut microbiota of spontaneous hypertensive rats (SHR). FSB displayed a strong in vitro angiotensin converting enzyme (ACE) inhibitory ability of 70 ± 5% while USB inhibited 5 ± 3% of the enzyme activity. Consumption of USB reduced serum ACE activity by 19.8 ± 12.85 U while FSB reduced the enzyme activity by 47.6 ± 11.35 U, respectively. FSB significantly improved cholesterol levels and reduced systolic and diastolic blood pressures by 14 ± 3 mmHg and 10 ± 3 mmHg, respectively, while USB only had a marginal impact on blood pressure. Analysis of FSB showed the abundance of ACE inhibitory peptides EGEQPRPFPFP and AIPVNKP (which were absent in USB) and 30 phenolic compounds (only 12 were abundant in USB). Feeding SHR with FSB promoted the growth of Akkermansia, Bacteroides, Intestinimonas, Phocaeicola, Lactobacillus and Prevotella (short chain fatty acid producers) while USB promoted only Prevotellamassilia, Prevotella and Intestimonas levels signifying the prebiotic ability of FSB. Our results show that, relative to USB, FSB are richer in bioactive compounds that reduce hypertension by inhibiting ACE, improving cholesterol levels and mitigating gut dysbiosis.
Collapse
|
15
|
Lin WS, Chueh TL, Nagabhushanam K, Ho CT, Pan MH. Piceatannol and 3'-Hydroxypterostilbene Alleviate Inflammatory Bowel Disease by Maintaining Intestinal Epithelial Integrity and Regulating Gut Microbiota in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1994-2005. [PMID: 36688924 DOI: 10.1021/acs.jafc.2c08170] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Inflammatory bowel disease has become a significant health concern across the globe, causing frequent and long-term harm to the digestive system. This study evaluated the effect of piceatannol (PIC) and 3'-hydroxypterostilbene (HPSB) on dextran sulfate sodium (DSS)-induced colitis in mice and investigated whether their effects are exerted through the amelioration of gut barrier dysfunction to reduce the severity of colitis. The findings showed that both PIC and HPSB attenuated inflammation by inhibiting the TNF-α/NF-κB/MLC pathway and reducing NLRP3 inflammasome activation. However, PIC was comparably effective in modulating tight junctions. The results may be attributed to the effect of PIC on reducing cell apoptosis-associated protein expression, including Bax/Bcl-2 and caspase-3 activation. Furthermore, microbiota analysis revealed that both PIC and HPSB increased representative probiotic species, including Akkermansiaceae and Lactobacillus intestinalis, and exhibited inhibitory effects on several bacterial species (Spiroplasmataceae and Acholeplasmataceae). Based on linear discriminant analysis effect size, butyrate-producing bacteria were identified as a biomarker in the PIC group. Overall, the results demonstrated that PIC repressed inflammation, inhibited cell apoptosis, and regulated microbiota composition. Consequently, PIC is more effective in maintaining gut barrier integrity than HPSB, and it is a promising ingredient in the development of functional food for colitis prevention.
Collapse
Affiliation(s)
- Wei-Sheng Lin
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Tai-Ling Chueh
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | | | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, New Jersey 08901-8520, United States
| | - Min-Hsiung Pan
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan
| |
Collapse
|
16
|
Wang X, Shi B, Zuo Z, Qi Y, Zhao S, Zhang X, Lan L, Shi Y, Liu X, Li S, Wang J, Hu J. Effects of Two Different Straw Pellets on Yak Growth Performance and Ruminal Microbiota during Cold Season. Animals (Basel) 2023; 13:ani13030335. [PMID: 36766224 PMCID: PMC9913257 DOI: 10.3390/ani13030335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/06/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
The Tianzhu white yaks (Bos grunniens) live on the Qinghai-Tibet Plateau. During winter, a lack of resources and low nutritional levels seriously affect their growth performance. In this study, we aimed to explore the effect of supplementation straw pellets on the growth performance and ruminal microbiota of yaks. Overall, at 6 (6M, n = 24), 18 (18M, n = 26), 30 (30M, n = 20), 42 (42M, n = 24), and 54 (54M, n = 22) month old Tianzhu white yaks were selected (total n = 116) and divided into the mixed straw + grazing (MSG), corn straw + grazing (CSG), and the grazing control (G) groups according to age and gender. Their growth performance was measured as per different dietary treatments. The rumen microbial community structure and levels of VFAs were analyzed from the 6M, 30M, and 54M male yaks from each group. The supplementary diets led to an increase in the ADG, which was the highest in the MSG group. The MSG group exhibited the highest level of acetate and total VFAs (TVFAs) among the three groups (p < 0.05). In addition, the 16S rRNA sequencing results proved that the microbial composition was dominated by the members of Firmicutes and Bacteroidetes. Christensenellaceae R-7 group was significantly abundant in the CSG and MSG groups compared to the G group (p < 0.05). Principal coordinate analysis (PCoA) revealed that the bacterial community structure of rumen in the MSG and CSG groups was considerably different from that in the G group; 6M samples exhibited different rumen microbial diversity compared with the other samples. Correlation analysis revealed that Christensenellaceae_R-7_group was positively correlated with the levels of acetate, TVFAs, and ADG. These results demonstrated that mixed straw pellets improved the growth performance of yaks, increased the abundance of Christensenellaceae R-7_group involved in cellulose degradation in the rumen, and produced large amounts of VFAs, which were absorbed by yaks, thus increasing their ADG. This study provides new insights into the effects of straw pellet supplementation on the changes in the rumen microbiota and growth performance of yaks.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Jiang Hu
- Correspondence: ; Tel.: +86-139-1948-3781
| |
Collapse
|
17
|
Song CH, Kim N, Nam RH, Choi SI, Jang JY, Lee HN. Changes in Gut Microbiome upon Orchiectomy and Testosterone Administration in AOM/DSS-Induced Colon Cancer Mouse Model. Cancer Res Treat 2023; 55:196-218. [PMID: 35790194 PMCID: PMC9873319 DOI: 10.4143/crt.2022.080] [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: 02/12/2022] [Accepted: 06/30/2022] [Indexed: 02/04/2023] Open
Abstract
PURPOSE Sex hormones are known to affect the gut microbiota. Previously, we reported that endogenous and exogenous testosterone are associated with colorectal cancer (CRC) development and submucosal invasion. In the present study, we investigated whether the gut microbiota is affected by orchiectomy (ORX) and testosterone propionate (TP) administration using an azoxymethane/dextran sulfate sodium (AOM/DSS)-induced CRC mouse model. MATERIALS AND METHODS Gut microbiota was evaluated by means of 16S rRNA gene sequencing of stool DNA extracted from feces that were obtained at 13 weeks after AOM injection (from 22-week-old animals) and stored in a gas-generating pouch. RESULTS The increase in microbial diversity (Chao1 and Phylogenetic Diversity index) and Firmicutes/Bacteroidetes (F/B) ratio upon AOM/DSS treatment in ORX mice was significantly decreased by TP supplementation. The ratio of commensal bacteria to opportunistic pathogens was lower in the TP-administered females and ORX mice than in the AOM/DSS group. Opportunistic pathogens (Mucispirillum schaedleri or Akkermansia muciniphila) were identified only in the TP group. In addition, microbial diversity and F/B ratio were higher in male controls than in female and ORX controls. Flintibacter butyricus, Ruminococcus bromii, and Romboutsia timonensis showed similar changes in the male control group as those in the female and ORX controls. CONCLUSION In conclusion, testosterone determines the dysbiosis of gut microbiota, which suggests that it plays a role in the sex-related differences in colorectal carcinogenesis.
Collapse
Affiliation(s)
- Chin-Hee Song
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea
| | - Nayoung Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul,
Korea
| | - Ryoung Hee Nam
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea
| | - Soo In Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea
| | - Jae Young Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea
| | - Ha-Na Lee
- Laboratory of Immunology, Division of Biotechnology Review and Research-III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD,
USA
| |
Collapse
|
18
|
Zhang H, Lang X, Zhang Y, Wang C. Distribution of bacteria in different regions of the small intestine with Zanthoxylum bungeanum essential oil supplement in small-tailed Han sheep. Front Microbiol 2022; 13:1062077. [PMID: 36619991 PMCID: PMC9816147 DOI: 10.3389/fmicb.2022.1062077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
Zanthoxylum bungeanum essential oil (EOZB) as an extract of Zanthoxylum bungeanum has a range of pharmacological effects such as antibacterial, anti-inflammatory, and antioxidant. However, there were no relevant studies on the regulation of gut microbes by EOZB in ruminants. In this study, the effects of different doses of EOZB on the structure and distribution of microorganisms in the small intestine of small-tailed Han sheep (STH) were investigated by 16s rRNA gene sequencing technique. We found that with the intervention of EOZB. The differential bacteria of duodenal at the phylum level were Firmicutes, Bacteroidetes, Tenericutes and Proteobacteria, and genus level differential bacteria were Prevotella 1, Ruminococcus 2 and Eubacterium coprostanoligenes group. The differential bacteria of jejunal at the phylum level were Firmicutes, Bacteroidetes, Tenericutes and Proteobacteria, and genus level differential bacteria were Prevotella 1, Rikenellaceae RC9 gut group, Christensenellaceae R-7 group, Ruminococcaceae UCG-014, Saccharofermentans, Ruminococcaceae NK4A214 group and Prevotellaceae UCG-001. The differential bacteria of ileal at the phylum level were Firmicutes, Bacteroidetes and Tenericutes, and genus level differential bacteria were Prevotella 1, Christensenellaceae R-7 group, Romboutsia and Ruminococcaceae UCG-014. In addition, at the same dose of EOZB, the five most abundant genera of bacteria varied in different regions of the small intestine. Among them, the abundance of Prevotella 1, Christensenellacea R-7 group and Ruminococcus 2 in ALW group was the highest in jejunum, duodenum and ileum, respectively. The abundance of Prevotella 1, Christensenellacea R-7 group and Rikenellacea RC9 gut group in BLW group was the highest in duodenum, jejunum and ileum, respectively. The abundance of Prevotella 1, Christensenellacea R-7 group and Ruminococcaeae NK4A214 group in CLW group was the highest in jejunum, duodenum and ileum, respectively. The abundance of Prevotella 1, Ruminococcus 2 and Ruminococcus NK4A214 groups in DLW group was the highest in jejunum, duodenum and ileum, respectively. Differential bacteria formed under the regulation of EOZB are associated with the digestion and absorption of nutrients and the state of intestinal health in the host. This study is the first to investigate the effect of EOZB on the distribution and structure of bacteria in the small intestine of STH. The results of the study enriched the structure and distribution of bacteria in the small intestine of ruminants and provided new insights into the future application of herbal medicine in ruminant production. Additionally, it provides a theoretical basis for the selection of probiotic bacteria for ruminants and the development and application of microecological preparations.
Collapse
Affiliation(s)
- Hailong Zhang
- Key Laboratory of Bovine and Ovine Germplasm and Straw Transfer into Feedstuff in Gansu Province, Institute of Livestock, Grass and Green Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, China,College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xia Lang
- Key Laboratory of Bovine and Ovine Germplasm and Straw Transfer into Feedstuff in Gansu Province, Institute of Livestock, Grass and Green Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, China
| | - Yanshu Zhang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Cailian Wang
- Key Laboratory of Bovine and Ovine Germplasm and Straw Transfer into Feedstuff in Gansu Province, Institute of Livestock, Grass and Green Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, China,*Correspondence: Cailian Wang,
| |
Collapse
|
19
|
Li Y, Li L, Tian J, Zheng F, Liao H, Zhao Z, Chen Y, Pang J, Wu T. Insoluble Fiber in Barley Leaf Attenuates Hyperuricemic Nephropathy by Modulating Gut Microbiota and Short-Chain Fatty Acids. Foods 2022; 11:3482. [PMID: 36360095 PMCID: PMC9656210 DOI: 10.3390/foods11213482] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/19/2022] [Accepted: 10/29/2022] [Indexed: 08/12/2023] Open
Abstract
Hyperuricemia (HUA), characterized by abnormal serum uric acid (UA) levels, is recognized as an important risk factor for hyperuricemic nephropathy (HN), which is strongly linked to gut microbiota. This study investigated the protective effects and regulatory mechanisms of insoluble fiber from barley leaves (BL) against HN, induced by adenine (Ad) and potassium oxonate (PO). The results showed that BL dramatically reduced the levels of serum UA and creatinine (CR) and alleviated renal injury and fibrosis. Moreover, BL modulated oxidative stress and downregulated the expression of urate transporter 1 (URAT1) and glucose transporter 9 (GLUT9) in the kidneys of mice with HN. In addition, the 16S rRNA sequence data showed that BL also increased the relative abundance of short-chain fatty acids (SCFAs)-producing bacteria, including Bacteroides, Alloprevotella, and Eisenbergiella. Besides, BL treatment also increased SCFAs levels. Of interest, the application of SCFAs in hyperuricemic mice effectively reduced their serum UA. Furthermore, SCFAs dose-dependently inhibited URAT1 and GLUT9 in vitro and potently interacted with URAT1 and GLUT9 in the docking analysis. When taken together, our results indicate that BL and its metabolite SCFAs may be potential candidates for relieving HUA or HN.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Ting Wu
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| |
Collapse
|
20
|
Yi SW, Lee HG, So KM, Kim E, Jung YH, Kim M, Jeong JY, Kim KH, Oem JK, Hur TY, Oh SI. Effect of feeding raw potato starch on the composition dynamics of the piglet intestinal microbiome. Anim Biosci 2022; 35:1698-1710. [PMID: 36108705 PMCID: PMC9659463 DOI: 10.5713/ab.22.0045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 07/04/2022] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE Raw potato starch (RPS) is resistant to digestion, escapes absorption, and is metabolized by intestinal microflora in the large intestine and acts as their energy source. In this study, we compared the effect of different concentrations of RPS on the intestinal bacterial community of weaned piglets. METHODS Male weaned piglets (25-days-old, 7.03±0.49 kg) were either fed a corn/soybean-based control diet (CON, n = 6) or two treatment diets supplemented with 5% RPS (RPS5, n = 4) or 10% RPS (RPS10, n = 4) for 20 days and their fecal samples were collected. The day 0 and 20 samples were analyzed using a 16S rRNA gene sequencing technology, followed by total genomic DNA extraction, library construction, and high-throughput sequencing. After statistical analysis, five phyla and 45 genera accounting for over 0.5% of the reads in any of the three groups were further analyzed. Furthermore, short-chain fatty acids (SCFAs) in the day 20 fecal samples were analyzed using gas chromatography. RESULTS Significant changes were not observed in the bacterial composition at the phylum level even after 20 d post feeding (dpf); however, the abundance of Intestinimonas and Barnesiella decreased in both RPS treatment groups compared to the CON group. Consumption of 5% RPS increased the abundance of Roseburia (p<0.05) and decreased the abundance of Clostridium (p<0.01) and Mediterraneibacter (p< 0.05). In contrast, consumption of 10% RPS increased the abundance of Olsenella (p<0.05) and decreased the abundance of Campylobacter (p<0.05), Kineothrix (p<0.05), Paraprevotella (p<0.05), and Vallitalea (p<0.05). Additionally, acetate (p<0.01), butyrate (p<0.05), valerate (p = 0.01), and total SCFAs (p = 0.01) were upregulated in the RPS5 treatment group. CONCLUSION Feeding 5% RPS altered bacterial community composition and promoted gut health in weaned piglets. Thus, resistant starch as a feed additive may prevent diarrhea in piglets during weaning.
Collapse
Affiliation(s)
- Seung-Won Yi
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Han Gyu Lee
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea,Laboratory of Veterinary Infectious Disease, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596,
Korea
| | - Kyoung-Min So
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Eunju Kim
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Young-Hun Jung
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Minji Kim
- Animal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Jin Young Jeong
- Animal Nutrition and Physiology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Ki Hyun Kim
- Animal Welfare Research Team, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Jae-Ku Oem
- Laboratory of Veterinary Infectious Disease, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596,
Korea
| | - Tai-Young Hur
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea
| | - Sang-Ik Oh
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365,
Korea,Corresponding Author: Sang-Ik Oh, Tel: +82-63-238-7228, Fax: +82-63-238-7235, E-mail:
| |
Collapse
|
21
|
Impaired Mucosal Homeostasis in Short-Term Fiber Deprivation Is Due to Reduced Mucus Production Rather Than Overgrowth of Mucus-Degrading Bacteria. Nutrients 2022; 14:nu14183802. [PMID: 36145178 PMCID: PMC9501499 DOI: 10.3390/nu14183802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/25/2022] Open
Abstract
The gut mucosal environment is key in host health; protecting against pathogens and providing a niche for beneficial bacteria, thereby facilitating a mutualistic balance between host and microbiome. Lack of dietary fiber results in erosion of the mucosal layer, suggested to be a result of increased mucus-degrading gut bacteria. This study aimed to use quantitative analyses to investigate the diet-induced imbalance of mucosal homeostasis. Seven days of fiber-deficiency affected intestinal anatomy and physiology, seen by reduced intestinal length and loss of the colonic crypt-structure. Moreover, the mucus layer was diminished, muc2 expression decreased, and impaired mucus secretion was detected by stable isotope probing. Quantitative microbiome profiling of the gut microbiota showed a diet-induced reduction in bacterial load and decreased diversity across the intestinal tract, including taxa with fiber-degrading and butyrate-producing capabilities. Most importantly, there was little change in the absolute abundance of known mucus-degrading bacteria, although, due to the general loss of taxa, relative abundance would erroneously indicate an increase in mucus degraders. These findings underscore the importance of using quantitative methods in microbiome research, suggesting erosion of the mucus layer during fiber deprivation is due to diminished mucus production rather than overgrowth of mucus degraders.
Collapse
|
22
|
Detection of indigenous gut bacteria related to red chilli pepper (Capsicum annuum) in murine caecum and human faecal cultures. Mol Biol Rep 2022; 49:10239-10250. [PMID: 36068389 DOI: 10.1007/s11033-022-07875-3] [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: 06/22/2022] [Accepted: 08/15/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND Red chilli pepper (Capsicum annuum; RP) is a popular spice containing the active compound capsaicin. Indigenous gut bacteria and metabolism can affect host health. The functions of capsaicin, including the regulation of metabolic health and anti-oxidant properties, may be correlated with the gut microbiota. METHODS To identify indigenous gut bacteria that are responsive to RP, Institute of Cancer Research mice fed a diet with no fibre or with 5% (w/w) RP for 14 days. Additionally, human stool samples collected from four healthy volunteers were incubated without (control) or with 2% (w/v) RP at 37 °C for 24 h. Microbiota in murine caecal samples and human faecal cultures were analysed using 16S rRNA (V4) amplicon sequencing. RESULTS Compared with the microbiota in mice fed no-fibre diets, Lachnospiraceae spp.-, Muribaculaceae spp.-, and Phacaeicola vulgatus-like bacteria were defined as murine RP-responsive indigenous gut bacteria (RP-RIB). In the human faecal cultures, acetate and propionate levels were higher in RP cultures than in the control cultures. Subdoligranulum spp.-, Blautia spp.-, Faecalibacterium prausnitzii-, P. vulgatus-, and Prevotella copri-like bacteria were defined as human RP-RIB. Compared with control culture Fe-reducing power was increased in the culture with RP. CONCLUSION RP increases the amount of short-chain fatty acid-producing bacteria and beneficial gut bacteria in mouse and human faecal cultures. Overall, RP could have a positive effect on the host by altering the gut microbiota.
Collapse
|
23
|
Limnospira indica PCC 8005 or Lacticaseibacillus rhamnosus GG Dietary Supplementation Modulate the Gut Microbiome in Mice. Appl Microbiol 2022. [DOI: 10.3390/applmicrobiol2030049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
While dietary supplements can have beneficial effects on the health of the intestine, these effects can come with unresolved issues in terms of therapeutic efficacy and mechanisms of action. In this study, the model probiotic Lacticaseibacillus rhamnosus GG ATCC 53103 and the anciently used dietary supplement Limnospira indica strain PCC 8005 were compared for their effects on murine intestinal ecology. Healthy male mice received either saline or suspensions of living cells of L. indica PCC 8005 or L. rhamnosus GG daily along a two-week intervention period, followed by a two-week washout period. Both bacteria-based solutions appeared able to transiently shift the microbial community, which were characterized by a higher relative abundance of members of the butyrate producing Lachnospiraceae and Porphyromonadaceae families.
Collapse
|
24
|
Responses of Fermentation Characteristics and Microbial Communities to Vitamin B12 Supplementation in In Vitro Ruminal Cultures. FERMENTATION 2022. [DOI: 10.3390/fermentation8080406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Vitamin B12, an important cofactor involved in propionate formation, is synthesized exclusively by bacteria and archaebacteria. Humans need to intake vitamin B12 through food, and dairy products are generally the best source of vitamin B12. In the present study, the effects of vitamin B12 supplementation in diets on in vitro ruminal fermentation characteristics and microbial communities were investigated to provide a reference for increasing the vitamin B12 content in milk by dietary supplementation. A completely randomized design was carried out using the in vitro rumen culture technique, and 5 vitamin B12 dose levels (0, 0.5, 1.0, 2.0, and 4 mg/g of dry matter) were used. The results showed that vitamin B12 supplementation in diets decreased acetate: propionate ratio and butyrate concentration. The change in the acetate: propionate ratio can be attributed to the increased relative abundances of the Proteobacteria phylum and the Negativicutes class, both of which are involved in propionate metabolism. The decrease in butyrate concentration can likely be attributed to a reduction in relative abundance of species belonging to the Clostridia class, which are known as the predominant butyrate producers in the mammalian intestine. In addition, vitamin B12 supplementation in diets reduced the CH4 production by altering the species composition of the archaeal community. In conclusion, dietary supplementation of vitamin B12 resulted in rumen perturbation. In vivo studies should be conducted cautiously when evaluating the effects of vitamin B12 supplementation on the synthesis and absorption of it, as well as its content in milk.
Collapse
|
25
|
Deng L, Zhou X, Lan Z, Tang K, Zhu X, Mo X, Zhao Z, Zhao Z, Wu M. Simotang Alleviates the Gastrointestinal Side Effects of Chemotherapy by Altering Gut Microbiota. J Microbiol Biotechnol 2022; 32:405-418. [PMID: 35283422 PMCID: PMC9628794 DOI: 10.4014/jmb.2110.10018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 12/15/2022]
Abstract
Simotang oral liquid (SMT) is a traditional Chinese medicine (TCM) consisting of four natural plants and is used to alleviate gastrointestinal side effects after chemotherapy and functional dyspepsia (FD). However, the mechanism by which SMT helps cure these gastrointestinal diseases is still unknown. Here, we discovered that SMT could alleviate gastrointestinal side effects after chemotherapy by altering gut microbiota. C57BL/6J mice were treated with cisplatin (DDP) and SMT, and biological samples were collected. Pathological changes in the small intestine were observed, and the intestinal injury score was assessed. The expression levels of the inflammatory factors IL-1β and IL-6 and the adhesive factors Occludin and ZO-1 in mouse blood or small intestine tissue were also detected. Moreover, the gut microbiota was analyzed by high-throughput sequencing of 16S rRNA amplicons. SMT was found to effectively reduce gastrointestinal mucositis after DDP injection, which lowered inflammation and tightened the intestinal epithelial cells. Gut microbiota analysis showed that the abundance of the anti-inflammatory microbiota was downregulated and that the inflammatory microbiota was upregulated in DDP-treated mice. SMT upregulated anti-inflammatory and anticancer microbiota abundance, while the inflammatory microbiota was downregulated. An antibiotic cocktail (ABX) was also used to delete mice gut microbiota to test the importance of gut microbiota, and we found that SMT could not alleviate gastrointestinal mucositis after DDP injection, showing that gut microbiota might be an important mediator of SMT treatment. Our study provides evidence that SMT might moderate gastrointestinal mucositis after chemotherapy by altering gut microbiota.
Collapse
Affiliation(s)
- Lijing Deng
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, P.R. China
| | - Xingyi Zhou
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, P.R. China
| | - Zhifang Lan
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, P.R. China
| | - Kairui Tang
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, P.R. China
| | - Xiaoxu Zhu
- Hubei University of Chinese Medicine, Wuhan 430065, P.R. China
| | - Xiaowei Mo
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, P.R. China
| | - Zongyao Zhao
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Zhiqiang Zhao
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, P.R. China,Corresponding authors Zhiqiang Zhao Phone: +86-20-8775-5766 E-mail:
| | - Mansi Wu
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou 510632, P.R. China,
Mansi Wu Phone: +86-20-8522-1543 E-mail:
| |
Collapse
|
26
|
Ma Y, Deng X, Yang X, Wang J, Li T, Hua G, Han D, Da L, Li R, Rong W, Deng X. Characteristics of Bacterial Microbiota in Different Intestinal Segments of Aohan Fine-Wool Sheep. Front Microbiol 2022; 13:874536. [PMID: 35572716 PMCID: PMC9097873 DOI: 10.3389/fmicb.2022.874536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/01/2022] [Indexed: 11/13/2022] Open
Abstract
The microbial community performs vital functions in the intestinal system of animals. Modulation of the gut microbiota structure can indirectly or directly affect gut health and host metabolism. Aohan fine-wool sheep grow in semi-desert grasslands in China and show excellent stress tolerance. In this study, we amplified 16S rRNA gene to investigate the dynamic distribution and adaptability of the gut microbiome in the duodenum, jejunum, ileum, cecum, colon, and rectum of seven Aohan fine-wool sheep at 12 months. The results showed that the microbial composition and diversity of the ileum and the large intestine (collectively termed the hindgut) were close together, and the genetic distance and functional projections between them were similar. Meanwhile, the diversity index results revealed that the bacterial richness and diversity of the hindgut were significantly higher than those of the foregut. We found that from the foregut to the hindgut, the dominant bacteria changed from Proteobacteria to Bacteroidetes. In LEfSe analysis, Succiniclasticum was found to be significantly abundant bacteria in the foregut and was involved in succinic acid metabolism. Ruminococcaceae and Caldicoprobacteraceae were significantly abundant in hindgut, which can degrade cellulose polysaccharides in the large intestine and produce beneficial metabolites. Moreover, Coriobacteriaceae and Eggthellaceae are involved in flavonoid metabolism and polyphenol production. Interestingly, these unique bacteria have not been reported in Mongolian sheep or other sheep breeds. Collectively, the gut microbiota of Aohan fine-wool sheep is one of the keys to adapting to the semi-desert grassland environment. Our results provide new insights into the role of gut microbiota in improving stress tolerance and gut health in sheep.
Collapse
Affiliation(s)
- Yuhao Ma
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Xiaotian Deng
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Xue Yang
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Jiankui Wang
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Tun Li
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Guoying Hua
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Deping Han
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Lai Da
- Inner Mongolia Academy of Agriculture and Animal Husbandry, Hohhot, China
| | - Rui Li
- Inner Mongolia Grassland Jinfeng Animal Husbandry Co., Ltd., Chifeng, China
| | - Weiheng Rong
- Inner Mongolia Academy of Agriculture and Animal Husbandry, Hohhot, China
| | - Xuemei Deng
- Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
- *Correspondence: Xuemei Deng,
| |
Collapse
|
27
|
Wang W, Wang Y, Cui Z, Yang Y, An X, Qi J. Fermented Wheat Bran Polysaccharides Intervention Alters Rumen Bacterial Community and Promotes Rumen Development and Growth Performance in Lambs. Front Vet Sci 2022; 9:841406. [PMID: 35433917 PMCID: PMC9007612 DOI: 10.3389/fvets.2022.841406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/03/2022] [Indexed: 11/13/2022] Open
Abstract
There is growing interest in the utilization of plant polysaccharides for the modulation of the rumen bacterial community and enhancement of growth performance in ruminants. Fermented wheat bran polysaccharides (FWBPs), plant polysaccharides, have been shown to improve the growth performance of lambs, but little is known about their effect on rumen bacteria. The aim of this study was to investigate the effects of FWBPs supplementation to milk replacer (MR) on the growth performance, blood metabolites, weight and morphology of rumen, rumen fermentation, and rumen bacterial community which were investigated in lambs. Twelve 1.5-month-old crossbred lambs (Dorper × Small-tailed Han Sheep) with an initial body weight (BW) of 11.38 ± 0.19 kg were randomly divided into two groups, namely, the control group and FWBPs group. Compared with the control group, the FWBPs group had a higher average daily weight gain and serum total protein concentrations, and a lower feed: gain ratio. A tendency of increase in final BW and carcass BW was also observed. Administration of FWBPs increased the ruminal papillae width and ruminal butyrate proportion and decreased the concentration of ammonia nitrogen and the proportion of isobutyrate and isovalerate. In addition, the epithelial cell thickness had an increased trend in the FWBPs group. High-throughput sequencing data showed that the relative abundance of Lachnospiraceae_NK3A20_group and Solobacterium was enhanced by FWBP treatment; meanwhile, the relative abundance of NK4A214_group, Megasphaera, and Treponema showed a tendency to be higher than that of the control group. Furthermore, Spearman's correlation analysis revealed that the relative abundances of NK4A214_group, Treponema, and Lachnospiraceae_NK3A20_group were positively correlated with butyrate proportion. Collectively, FWBPs supplementation to MR on lambs altered the rumen bacterial community, promoted rumen development, and improved growth performance.
Collapse
Affiliation(s)
- Wenwen Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot, China
| | - Yuan Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot, China
- *Correspondence: Yuan Wang
| | - Zhiwei Cui
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot, China
| | - Yi Yang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot, China
| | - Xiaoping An
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot, China
- Xiaoping An
| | - Jingwei Qi
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering and Technology Research Center, Hohhot, China
| |
Collapse
|
28
|
Ghimire S, Cady NM, Lehman P, Peterson SR, Shahi SK, Rashid F, Giri S, Mangalam AK. Dietary Isoflavones Alter Gut Microbiota and Lipopolysaccharide Biosynthesis to Reduce Inflammation. Gut Microbes 2022; 14:2127446. [PMID: 36179318 PMCID: PMC9542810 DOI: 10.1080/19490976.2022.2127446] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 09/16/2022] [Indexed: 02/04/2023] Open
Abstract
The etiopathogenesis of multiple sclerosis (MS) is strongly affected by environmental factors such as diet and the gut microbiota. An isoflavone-rich (ISO) diet was previously shown to reduce the severity of MS in the animal model experimental autoimmune encephalomyelitis (EAE). Translation of this concept to clinical trial where dietary isoflavones may be recommended for MS patients will require preliminary evidence that providing the isoflavone-rich diet to people with MS (PwMS) who lack phytoestrogen-metabolizing bacteria has beneficial effects. We have previously shown that the gut microbiota of PwMS resembles the gut microbiota of mice raised under a phytoestrogen-free (phyto-free) diet in that it lacks phytoestrogen-metabolizing bacteria. To investigate the effects of phytoestrogens on the microbiota inflammatory response and EAE disease severity we switched the diet of mice raised under a phyto-free (PF) diet to an isoflavone-rich diet. Microbiota analysis showed that the change in diet from one that is ISO to one that is PF reduces beneficial bacteria such as Bifidobacterium species. In addition we observed functional differences in lipopolysaccharide (LPS) biosynthesis pathways. Moreover LPS extracted from feces of mice fed an ISO diet induced increased production of anti-inflammatory cytokines from bone marrow-derived macrophages relative to fecal-LPS isolated from mice fed a PF diet. Eventually mice whose diet was switched from a PF diet to an ISO diet trended toward reduced EAE severity and mortality. Overall we show that an isoflavone-rich diet specifically modulates LPS biosynthesis of the gut microbiota imparts an anti-inflammatory response and decreases disease severity.
Collapse
Affiliation(s)
- Sudeep Ghimire
- Department of Pathology University of IowaIowa CityIowaUSA
| | - Nicole M. Cady
- Department of Pathology University of IowaIowa CityIowaUSA
| | - Peter Lehman
- Department of Pathology University of IowaIowa CityIowaUSA
- Department of Pathology Graduate Program University of IowaIowa CityIAUSA
| | - Stephanie R. Peterson
- Department of Pathology University of IowaIowa CityIowaUSA
- Graduate Program in Immunology University of IowaIowa CityIowaUSA
| | | | - Faraz Rashid
- Department of Neurology Henry Ford Health SystemDetroitMIUSA
| | - Shailendra Giri
- Department of Neurology Henry Ford Health SystemDetroitMIUSA
| | - Ashutosh K. Mangalam
- Department of Pathology University of IowaIowa CityIowaUSA
- Graduate Program in Immunology University of IowaIowa CityIowaUSA
| |
Collapse
|
29
|
Brame JE, Liddicoat C, Abbott CA, Breed MF. The potential of outdoor environments to supply beneficial butyrate-producing bacteria to humans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 777:146063. [PMID: 33684759 DOI: 10.1016/j.scitotenv.2021.146063] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Butyrate is an important mediator of human health and disease. The mechanisms of action of butyrate are becoming increasingly well-known. Many commensal bacteria that inhabit the human gut can synthesise butyrate, which is then absorbed into the human host. Simultaneously, several immune- and inflammatory-mediated diseases are being linked to insufficient exposure to beneficial microbes from our environment, including butyrate-producing bacteria. However, the role of outdoor environmental exposure to butyrate-producing bacteria remains poorly understood. Here we review the literature on the human exposure pathways to butyrate-producing bacteria, with a particular focus on outdoor environmental sources (e.g. associated with plants, plant-based residues, and soil), and the health implications of exposure to them. Emerging evidence suggests that environmental butyrate-producers may help supplement the human gut microbiota and represent an important component of the Biodiversity and Old Friends hypotheses. Improving our understanding of potential sources, precursors, and exposure pathways of environmental butyrate-producers that influence the gut microbiota and butyrate production offers promise to advance multiple disciplines of health and environmental science. We outline research priorities to address knowledge gaps in the outdoor environment-butyrate-health nexus and build knowledge of the potential pathways to help optimise exposure to human-beneficial butyrate-producing bacteria from the outdoor environment during childhood and adulthood.
Collapse
Affiliation(s)
- Joel E Brame
- College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia.
| | - Craig Liddicoat
- College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia; School of Public Health, The University of Adelaide, SA 5005, Australia
| | - Catherine A Abbott
- College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
| | - Martin F Breed
- College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
| |
Collapse
|
30
|
Huang C, Ge F, Yao X, Guo X, Bao P, Ma X, Wu X, Chu M, Yan P, Liang C. Microbiome and Metabolomics Reveal the Effects of Different Feeding Systems on the Growth and Ruminal Development of Yaks. Front Microbiol 2021; 12:682989. [PMID: 34248900 PMCID: PMC8265505 DOI: 10.3389/fmicb.2021.682989] [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: 03/22/2021] [Accepted: 05/11/2021] [Indexed: 11/26/2022] Open
Abstract
The change in the feeding system can greatly improve the growth performance of the yak (Bos grunniens), an important livestock species in the plateau region. Here, we comprehensively compared the effects of different feeding systems on the growth performance and ruminal development of yaks, and investigated the effects of ruminal microorganisms and metabolites using the 16S rRNA gene sequencing and liquid chromatograph–mass spectrometer (LC-MS) technologies. We found that compared to traditional grazing feeding, house feeding significantly improved the growth performance (such as average daily gain and net meat weight) and rumen development of the yaks. At the genus level, the abundance of Rikenellaceae RC9 Gut group, Christensenellaceae R-7 group, Lachnospiraceae NK3A20 group, Ruminococcaceae UCG-014, and Prevotellaceae UCG-003 showed significant differences and was closely related to rumen development in the two distinct feeding systems. Also, metabolomics revealed that the change in the feeding system significantly affected the concentration and metabolic pathways of the related rumen metabolites. The metabolites with significant differences were significantly enriched in purine metabolism (xanthine, adenine, inosine, etc.), tyrosine metabolism (L-tyrosine, dopaquinone, etc.), phenylalanine metabolism (dihydro-3-caumaric acid, hippuric acid, etc.), and cAMP signaling pathway [acetylcholine, (-)-epinephrine, etc.]. This study scientifically support the house fattening feeding system for yaks. Also, our results provide new insights into the composition and function of microbial communities that promote ruminal development and in general growth of the yaks.
Collapse
Affiliation(s)
- Chun Huang
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Fei Ge
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xixi Yao
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xian Guo
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Pengjia Bao
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaoming Ma
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaoyun Wu
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Min Chu
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Ping Yan
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Chunnian Liang
- Key Laboratory of Yak Breeding Engineering Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou, China
| |
Collapse
|
31
|
Exploring the signature gut and oral microbiome in individuals of specific Ayurveda prakriti. J Biosci 2021. [DOI: 10.1007/s12038-021-00182-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
32
|
Activation of a Specific Gut Bacteroides-Folate-Liver Axis Benefits for the Alleviation of Nonalcoholic Hepatic Steatosis. Cell Rep 2021; 32:108005. [PMID: 32783933 DOI: 10.1016/j.celrep.2020.108005] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 06/24/2020] [Accepted: 07/16/2020] [Indexed: 02/08/2023] Open
Abstract
A beneficial gut Bacteroides-folate-liver pathway regulating lipid metabolism is demonstrated. Oral administration of a Ganoderma meroterpene derivative (GMD) ameliorates nonalcoholic hepatic steatosis in the liver of fa/fa rats by reducing endotoxemia, enhancing lipid oxidation, decreasing de novo lipogenesis, and suppressing lipid export from the liver. An altered gut microbiota with an increase of butyrate and folate plays a causative role in the effects of GMD. The commensal bacteria Bacteroides xylanisolvens, Bacteroides thetaiotaomicron, Bacteroides dorei, and Bacteroides uniformis, which are enriched by GMD, are major contributors to the increased gut folate. Administration of live B. xylanisolvens reduces hepatic steatosis and enhances the folate-mediated signaling pathways in mice. Knockout of the folate biosynthetic folp gene in B. xylanisolvens blocks its folate production and beneficial effects. This work confirms the therapeutic potential of GMD and B. xylanisolvens in alleviating nonalcoholic hepatic steatosis and provides evidence for benefits of the gut Bacteroides-folate-liver pathway.
Collapse
|
33
|
Andreo-Martínez P, Rubio-Aparicio M, Sánchez-Meca J, Veas A, Martínez-González AE. A Meta-analysis of Gut Microbiota in Children with Autism. J Autism Dev Disord 2021; 52:1374-1387. [PMID: 33948825 DOI: 10.1007/s10803-021-05002-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2021] [Indexed: 02/06/2023]
Abstract
Previous studies have reported dysbiosis in the gut microbiota (GM) of children with autism spectrum disorders (ASD), which may be a determining factor on child development through the microbiota-gut-brain axis. However, it is not clear if there is a specific group of dysbiotic bacteria in ASD. The aim of this study was to carry out a meta-analysis on the studies that analyze GM in children with ASD. 18 studies fulfilled our selection criteria. Our results showed a lower relative abundance of Streptococcus (SMD+ = - 0.999; 95% CI - 1.549, - 0.449) and Bifidobacterium genera (SMD+ = - 0.513; 95% CI - 0.953, - 0.073) in children with ASD. Overall, the Bifidobacterium genera is involved. However, differences found between studies are attributed to factors such as reporting bias.
Collapse
Affiliation(s)
- Pedro Andreo-Martínez
- Department of Agricultural Chemistry, Faculty of Chemistry, University of Murcia, Campus of Espinardo, Murcia, Spain.,Department of Chemical Engineering, Faculty of Chemistry, University of Murcia, Campus of Espinardo, Murcia, Spain
| | - María Rubio-Aparicio
- Department of Health Psychology, Faculty of Health Sciences, University of Alicante, Alicante, Spain
| | - Julio Sánchez-Meca
- Department Basic Psychology and Methodology, Faculty of Psychology, University of Murcia, Murcia, Spain
| | - Alejandro Veas
- Department of Developmental Psychology and Didactics, Faculty of Education, University of Alicante, Alicante, Spain
| | - Agustín Ernesto Martínez-González
- Department of Developmental Psychology and Didactics, Faculty of Education, University of Alicante, Alicante, Spain. .,Department of Developmental Psychology and Didactics, University of Alicante (Spain), Carretera San Vicente del Raspeig s/n. Edificio Facultad de Educación, Apdo, Correos, 99, 03080, Alicante, Spain.
| |
Collapse
|
34
|
Children with Autism and Their Typically Developing Siblings Differ in Amplicon Sequence Variants and Predicted Functions of Stool-Associated Microbes. mSystems 2021; 6:6/2/e00193-20. [PMID: 33824194 PMCID: PMC8561662 DOI: 10.1128/msystems.00193-20] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The existence of a link between the gut microbiome and autism spectrum disorder (ASD) is well established in mice, but in human populations, efforts to identify microbial biomarkers have been limited due to a lack of appropriately matched controls, stratification of participants within the autism spectrum, and sample size. To overcome these limitations, we crowdsourced the recruitment of families with age-matched sibling pairs between 2 and 7 years old (within 2 years of each other), where one child had a diagnosis of ASD and the other did not. Parents collected stool samples, provided a home video of their ASD child's natural social behavior, and responded online to diet and behavioral questionnaires. 16S rRNA V4 amplicon sequencing of 117 samples (60 ASD and 57 controls) identified 21 amplicon sequence variants (ASVs) that differed significantly between the two cohorts: 11 were found to be enriched in neurotypical children (six ASVs belonging to the Lachnospiraceae family), while 10 were enriched in children with ASD (including Ruminococcaceae and Bacteroidaceae families). Summarizing the expected KEGG orthologs of each predicted genome, the taxonomic biomarkers associated with children with ASD can use amino acids as precursors for butyragenic pathways, potentially altering the availability of neurotransmitters like glutamate and gamma aminobutyric acid (GABA).IMPORTANCE Autism spectrum disorder (ASD), which now affects 1 in 54 children in the United States, is known to have comorbidity with gut disorders of a variety of types; however, the link to the microbiome remains poorly characterized. Recent work has provided compelling evidence to link the gut microbiome to the autism phenotype in mouse models, but identification of specific taxa associated with autism has suffered replicability issues in humans. This has been due in part to sample size that sufficiently covers the spectrum of phenotypes known to autism (which range from subtle to severe) and a lack of appropriately matched controls. Our original study proposes to overcome these limitations by collecting stool-associated microbiome on 60 sibling pairs of children, one with autism and one neurotypically developing, both 2 to 7 years old and no more than 2 years apart in age. We use exact sequence variant analysis and both permutation and differential abundance procedures to identify 21 taxa with significant enrichment or depletion in the autism cohort compared to their matched sibling controls. Several of these 21 biomarkers have been identified in previous smaller studies; however, some are new to autism and known to be important in gut-brain interactions and/or are associated with specific fatty acid biosynthesis pathways.
Collapse
|
35
|
Yang K, Hou Y, Zhang Y, Liang H, Sharma A, Zheng W, Wang L, Torres R, Tatebe K, Chmura SJ, Pitroda SP, Gilbert JA, Fu YX, Weichselbaum RR. Suppression of local type I interferon by gut microbiota-derived butyrate impairs antitumor effects of ionizing radiation. J Exp Med 2021; 218:e20201915. [PMID: 33496784 PMCID: PMC7844434 DOI: 10.1084/jem.20201915] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/02/2020] [Accepted: 12/09/2020] [Indexed: 12/27/2022] Open
Abstract
The antitumor effects of ionizing radiation (IR) are mediated in part through activation of innate and adaptive immunity. Here we report that gut microbiota influences tumor control following IR. Vancomycin decreased the abundance of butyrate-producing gut bacteria and enhanced antitumor responses to IR. Oral administration of Lachnospiraceae, a family of vancomycin-sensitive bacteria, was associated with increased systemic and intratumoral butyric acid levels and impaired the efficacy of IR in germ-free (GF) mice. Local butyrate inhibited STING-activated type I IFN expression in dendritic cells (DCs) through blockade of TBK1 and IRF3 phosphorylation, which abrogated IR-induced tumor-specific cytotoxic T cell immune responses without directly protecting tumor cells from radiation. Our findings demonstrate that the selective targeting of butyrate-producing microbiota may provide a novel therapeutic option to enhance tumor radiation sensitivity.
Collapse
Affiliation(s)
- Kaiting Yang
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Yuzhu Hou
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Yuan Zhang
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Hua Liang
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Anukriti Sharma
- Department of Pediatrics, University of California, San Diego, La Jolla, CA
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA
| | - Wenxin Zheng
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Liangliang Wang
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Rolando Torres
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
| | - Ken Tatebe
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
| | - Steven J. Chmura
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
| | - Sean P. Pitroda
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| | - Jack A. Gilbert
- Department of Pediatrics, University of California, San Diego, La Jolla, CA
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA
| | - Yang-Xin Fu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Ralph R. Weichselbaum
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL
- The Ludwig Center for Metastasis Research, University of Chicago, Chicago, IL
| |
Collapse
|
36
|
Arnesen H, Hitch TCA, Steppeler C, Müller MHB, Knutsen LE, Gunnes G, Angell IL, Ormaasen I, Rudi K, Paulsen JE, Clavel T, Carlsen H, Boysen P. Naturalizing laboratory mice by housing in a farmyard-type habitat confers protection against colorectal carcinogenesis. Gut Microbes 2021; 13:1993581. [PMID: 34751603 PMCID: PMC8583187 DOI: 10.1080/19490976.2021.1993581] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 09/27/2021] [Accepted: 10/08/2021] [Indexed: 02/04/2023] Open
Abstract
Living in a farm environment in proximity to animals is associated with reduced risk of developing allergies and asthma, and has been suggested to protect against other diseases, such as inflammatory bowel disease and cancer. Despite epidemiological evidence, experimental disease models that recapitulate such environments are needed to understand the underlying mechanisms. In this study, we show that feralizing conventional inbred mice by continuous exposure to a livestock farmyard-type environment conferred protection toward colorectal carcinogenesis. Two independent experimental approaches for colorectal cancer induction were used; spontaneous (Apc Min/+ mice on an A/J background) or chemical (AOM/DSS). In contrast to conventionally reared laboratory mice, the feralized mouse gut microbiota structure remained stable and resistant to mutagen- and colitis-induced neoplasia. Moreover, the feralized mice exhibited signs of a more mature immunophenotype, indicated by increased expression of NK and T-cell maturation markers, and a more potent IFN-γ response to stimuli. In our study, hygienically born and raised mice subsequently feralized post-weaning were protected to a similar level as life-long exposed mice, although the greatest effect was seen upon neonatal exposure. Collectively, we show protective implications of a farmyard-type environment on colorectal cancer development and demonstrate the utility of a novel animal modeling approach that recapitulates realistic disease responses in a naturalized mammal.
Collapse
Affiliation(s)
- Henriette Arnesen
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Norway
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Norway
| | - Thomas C A Hitch
- Functional Microbiome Research Group, Institute of Medical Microbiology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Christina Steppeler
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Oslo, Norway
| | - Mette Helen Bjørge Müller
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Oslo, Norway
| | - Linn Emilie Knutsen
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Norway
| | - Gjermund Gunnes
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Norway
| | - Inga Leena Angell
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Norway
| | - Ida Ormaasen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Norway
| | - Knut Rudi
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Norway
| | - Jan Erik Paulsen
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Oslo, Norway
| | - Thomas Clavel
- Functional Microbiome Research Group, Institute of Medical Microbiology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Harald Carlsen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Norway
| | - Preben Boysen
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Aas, Norway
| |
Collapse
|
37
|
Yao Y, Yan L, Chen H, Wu N, Wang W, Wang D. Cyclocarya paliurus polysaccharides alleviate type 2 diabetic symptoms by modulating gut microbiota and short-chain fatty acids. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2020; 77:153268. [PMID: 32663709 DOI: 10.1016/j.phymed.2020.153268] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/06/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Cyclocarya paliurus polysaccharide (CCPP), a primary active component in the leaves of Cyclocarya paliurus (Batal.) Iljinsk (C. paliurus), has the ability to treat type 2 diabetes mellitus (T2DM), but cannot be digested by our digestive system. Therefore, mechanisms of regulating the gut microbiota and intestinal metabolites might exist. PURPOSE To reveal the potential mechanism of CCPP treatment, this study aimed to investigate the alterations of the gut microbiota and intestinal metabolites especially short chain fatty acids (SCFAs) in type 2 diabetic rats. STUDY DESIGN AND METHODS Type 2 diabetic rat models were developed, and the therapeutic effects of CCPP were evaluated. Metagenomics analysis was utilized to analyze the alterations to the gut microbiota, and UHPLC-QTOF/MS-based untargeted metabolomics analysis of colon contents was used to identify the differential intestinal metabolites. GC/MS was used to measure the SCFAs in rat's colon contents and human fecal inoculums. Furthermore, the expression of SCFA receptors including GPR41, GPR43 and GPR109a was verified by qRT-PCR and the concentration of glucagon-like peptide-1(GLP-1) and peptide tyrosinetyrosine (PYY) was measured by Elisa. RESULTS Inhibition of the blood glucose levels and improvements in glucose tolerance and serum lipid parameters were observed after CCPP treatment. Eleven SCFA-producing species including Ruminococcus_bromii, Anaerotruncus_colihominis, Clostridium_methylpentosum, Roseburia_intestinalis, Roseburia_hominis, Clostridium_asparagiforme, Pseudoflavonifractor_capillosus, Intestinimonas_butyriciproducens, Intestinimonas_sp._GD2, Oscillibacter_valericigenes and Oscillibacter_ruminantium were clearly increased in the CCPP group. Furthermore, our study indicated that CCPP increases the production of SCFAs both in vivo and in vitro, and the gut microbiota are the key factor of this process. The SCFA receptors including GPR41, GPR43 and GPR109a, were significantly stimulated in the CCPP treated rats, which was accompanied by the upregulated expression of GLP-1 and PYY. CONCLUSION These results demonstrated that CCPP could alleviate type 2 diabetic symptoms by increasing the SCFA-producing bacteria, promoting the production of SCFAs and upregulating SCFA-GLP1/PYY associated sensory mediators.
Collapse
MESH Headings
- Adult
- Animals
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/microbiology
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/microbiology
- Fatty Acids, Volatile/analysis
- Fatty Acids, Volatile/biosynthesis
- Feces/chemistry
- Feces/microbiology
- Female
- Gastrointestinal Microbiome/drug effects
- Gastrointestinal Microbiome/genetics
- Glucagon-Like Peptide 1/metabolism
- Humans
- Hypoglycemic Agents/pharmacology
- Juglandaceae/chemistry
- Juglandaceae/microbiology
- Male
- Metabolomics
- Metagenome
- Plant Leaves/chemistry
- Plants, Medicinal/chemistry
- Polysaccharides/pharmacology
- Rats, Sprague-Dawley
Collapse
Affiliation(s)
- Ye Yao
- Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha,410008, China; Hunan Key Laboratory of Traditional Chinese Medicine for Gan of State Administration, Central South University, Changsha, 410008, China
| | - Lijing Yan
- Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha,410008, China; Hunan Key Laboratory of Traditional Chinese Medicine for Gan of State Administration, Central South University, Changsha, 410008, China
| | - Han Chen
- Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha,410008, China; Hunan Key Laboratory of Traditional Chinese Medicine for Gan of State Administration, Central South University, Changsha, 410008, China
| | - Ning Wu
- Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha,410008, China; Hunan Key Laboratory of Traditional Chinese Medicine for Gan of State Administration, Central South University, Changsha, 410008, China
| | - Wenbo Wang
- Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha,410008, China; Hunan Key Laboratory of Traditional Chinese Medicine for Gan of State Administration, Central South University, Changsha, 410008, China
| | - Dongsheng Wang
- Institute of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha,410008, China; Hunan Key Laboratory of Traditional Chinese Medicine for Gan of State Administration, Central South University, Changsha, 410008, China.
| |
Collapse
|
38
|
Effects of Vitamin B2 Supplementation in Broilers Microbiota and Metabolome. Microorganisms 2020; 8:microorganisms8081134. [PMID: 32727134 PMCID: PMC7464963 DOI: 10.3390/microorganisms8081134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 01/04/2023] Open
Abstract
The study of the microbiome in broiler chickens holds great promise for the development of strategies for health maintenance and performance improvement. Nutritional strategies aimed at modulating the microbiota-host relationship can improve chickens' immunological status and metabolic fitness. Here, we present the results of a pilot trial aimed at analyzing the effects of a nutritional strategy involving vitamin B2 supplementation on the ileum, caeca and litter microbiota of Ross 308 broilers, as well as on the metabolic profile of the caecal content. Three groups of chickens were administered control diets and diets supplemented with two different dosages of vitamin B2. Ileum, caeca, and litter samples were obtained from subgroups of birds at three time points along the productive cycle. Sequencing of the 16S rRNA V3-V4 region and NMR metabolomics were used to explore microbiota composition and the concentration of metabolites of interest, including short-chain fatty acids. Vitamin B2 supplementation significantly modulated caeca microbiota, with the highest dosage being more effective in increasing the abundance of health-promoting bacterial groups, including Bifidobacterium, resulting in boosted production of butyrate, a well-known health-promoting metabolite, in the caeca environment.
Collapse
|
39
|
Li Z, Zhu H, Guo Y, Du X, Qin C. Gut microbiota regulate cognitive deficits and amyloid deposition in a model of Alzheimer's disease. J Neurochem 2020; 155:448-461. [PMID: 32319677 DOI: 10.1111/jnc.15031] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 04/06/2020] [Accepted: 04/17/2020] [Indexed: 12/21/2022]
Abstract
Gut microbiota, comprising a vast number of microorganism species with complex metagenome, are known to be associated with Alzheimer's disease (AD) and amyloid deposition. However, studies related to gut microbiota have been mostly restricted to comparisons of amyloid deposits, while investigations on neurobehavioral changes and the pathogenesis of AD are limited. Therefore, we aimed to identify the relationship between changes in the intestinal microbiome and the pathogenesis of AD. APPswe /PS1ΔE9 (PAP) transgenic mice and wild-type (WT) mice of different age groups were used. The composition of intestinal bacterial communities in the mice was determined by 16S ribosomal RNA sequencing (16S rRNA Seq), and the Y maze was used to measure cognitive function. Transcriptome sequencing (RNA Seq) and Gene Expression Omnibus (GEO) database (GSE 36980) were used to filter differentially expressed genes (DEGs) between specific pathogen-free (SPF) and germ-free (GF) mice. Quantitative reverse-transcriptase PCR (qRT-PCR) and western blot (WB) were used to verify the results. We found that the intestinal microbiota was significantly different between 5-month-old PAP and WT mice and the cognition of SPF PAP mice was diminished compared to GF PAP and SPF WT mice. DEGs in 5-month-old SPF and GF mice were enriched in the MAPK signalling pathway, and expression of amyloid precursor protein and amyloid deposition increased in 5-month-old SPF PAP mice. Results from this study showed that changes in intestinal microbiota were correlated with impairment of cognitive function and might promote amyloid deposition by stimulating the MAPK signalling pathway in the brain.
Collapse
Affiliation(s)
- Zhuo Li
- Comparative Medicine Center, Peking Union Medical College (PUMC) and Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS), Beijing, China
| | - Hua Zhu
- Comparative Medicine Center, Peking Union Medical College (PUMC) and Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS), Beijing, China
| | - Yaxi Guo
- Comparative Medicine Center, Peking Union Medical College (PUMC) and Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS), Beijing, China
| | - Xiaopeng Du
- Comparative Medicine Center, Peking Union Medical College (PUMC) and Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS), Beijing, China
| | - Chuan Qin
- Comparative Medicine Center, Peking Union Medical College (PUMC) and Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS), Beijing, China
| |
Collapse
|
40
|
Chen Z, Xie Y, Zhou F, Zhang B, Wu J, Yang L, Xu S, Stedtfeld R, Chen Q, Liu J, Zhang X, Xu H, Ren J. Featured Gut Microbiomes Associated With the Progression of Chronic Hepatitis B Disease. Front Microbiol 2020; 11:383. [PMID: 32265857 PMCID: PMC7098974 DOI: 10.3389/fmicb.2020.00383] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 02/20/2020] [Indexed: 12/11/2022] Open
Abstract
Dysbiosis of gut microbiota during the progression of HBV-related liver disease is not well understood, as there are very few reports that discuss the featured bacterial taxa in different stages. The aim of this study was to reveal the featured bacterial species whose abundances are directly associated with HBV disease progression, that is, progression from healthy subjects to, chronic HBV infection, chronic hepatitis B to liver cirrhosis. Approximately 400 fecal samples were collected, and 97 samples were subjected to 16S rRNA gene sequencing after age and BMI matching. Compared with the healthy individuals, significant gut microbiota alterations were associated with the progression of liver disease. LEfSe results showed that the HBV infected patients had higher Fusobacteria, Veillonella, and Haemophilus abundance while the healthy individuals had higher levels of Prevotella and Phascolarctobacterium. Indicator analysis revealed that 57 OTUs changed as the disease progressed, and their combination produced an AUC value of 90% (95% CI: 86-94%) between the LC and non-LC groups. In addition, the abundances of OTU51 (Dialister succinatiphilus) and OTU50 (Alistipes onderdonkii) decreased as the disease progressed, and these results were further verified by qPCR. The LC patients had the higher bacterial network complexity, which was accompanied with a lower abundance of potential beneficial bacterial taxa, such as Dialister and Alistipes, while they had a higher abundance of pathogenic species within Actinobacteria. The compositional and network changes in the gut microbiota in varied CHB stages, suggest the potential contributions of gut microbiota in CHB disease progression.
Collapse
Affiliation(s)
- Zhangran Chen
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Yurou Xie
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Fei Zhou
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Bangzhou Zhang
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Jingtong Wu
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Luxi Yang
- School of Life Sciences, Xiamen University, Xiamen, China
| | - Shuangbin Xu
- Fisheries College, Jimei University, Xiamen, China
| | - Robert Stedtfeld
- Civil and Environmental Engineering, Michigan State University, East Lansing, MI, United States
| | - Qiongyun Chen
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Jingjing Liu
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Xiang Zhang
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
| | - Hongzhi Xu
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| | - Jianlin Ren
- Department of Gastroenterology, Zhongshan Hospital Xiamen University, Xiamen, China
- Institute for Microbial Ecology, School of Medicine, Xiamen University, Xiamen, China
| |
Collapse
|
41
|
Liddicoat C, Sydnor H, Cando-Dumancela C, Dresken R, Liu J, Gellie NJC, Mills JG, Young JM, Weyrich LS, Hutchinson MR, Weinstein P, Breed MF. Naturally-diverse airborne environmental microbial exposures modulate the gut microbiome and may provide anxiolytic benefits in mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 701:134684. [PMID: 31704402 DOI: 10.1016/j.scitotenv.2019.134684] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/25/2019] [Accepted: 09/26/2019] [Indexed: 05/14/2023]
Abstract
Growing epidemiological evidence links natural green space exposure with a range of health benefits, including for mental health. Conversely, greater urbanisation associates with increased risk of mental health disorders. Microbiomes are proposed as an important but understudied link that may help explain many green space-human health associations. However, there remains a lack of controlled experimental evidence testing possible beneficial effects from passive exposure to natural biodiversity via airborne microbiota. Previous mouse model studies have used unrealistic environmental microbial exposures-including excessive soil and organic matter contact, feed supplements and injections-to demonstrate host microbiota, immune biomarker, and behavioural changes. Here, in a randomised controlled experiment, we demonstrate that realistic exposures to trace-level dust from a high biodiversity soil can change mouse gut microbiota, in comparison to dust from low biodiversity soil or no soil (control) (n = 54 total mice, comprising 3 treatments × 18 mice, with 9 females + 9 males per group). Furthermore, we found a nominal soil-derived anaerobic spore-forming butyrate-producer, Kineothrix alysoides, was supplemented to a greater extent in the gut microbiomes of high biodiversity treatment mice. Also, increasing relative abundance of this rare organism correlated with reduced anxiety-like behaviour in the most anxious mice. Our results point to an intriguing new hypothesis: that biodiverse soils may represent an important supplementary source of butyrate-producing bacteria capable of resupplying the mammalian gut microbiome, with potential for gut health and mental health benefits. Our findings have potential to inform cost-effective population health interventions through microbiome-conscious green space design and, ultimately, the mainstreaming of biodiversity into health care.
Collapse
Affiliation(s)
- Craig Liddicoat
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia.
| | - Harrison Sydnor
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Christian Cando-Dumancela
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Romy Dresken
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Jiajun Liu
- Adelaide Medical School, The University of Adelaide, Adelaide, South Australia 5005, Australia; Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Nicholas J C Gellie
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Jacob G Mills
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Jennifer M Young
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia; College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Laura S Weyrich
- Australian Centre for Ancient DNA, The University of Adelaide, Adelaide, South Australia 5005, Australia; Australian Research Council Centre of Excellence for Australian Biodiversity and Heritage, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Mark R Hutchinson
- Adelaide Medical School, The University of Adelaide, Adelaide, South Australia 5005, Australia; Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Philip Weinstein
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Martin F Breed
- School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, South Australia 5005, Australia; College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia.
| |
Collapse
|
42
|
β-Sitosterol Attenuates High Grain Diet-Induced Inflammatory Stress and Modifies Rumen Fermentation and Microbiota in Sheep. Animals (Basel) 2020; 10:ani10010171. [PMID: 31963945 PMCID: PMC7022687 DOI: 10.3390/ani10010171] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 12/22/2022] Open
Abstract
β-sitosterol (BSS) is a plant-derived natural bioactive compound, its cellular mechanism of anti-inflammatory activity has been proven recently. Little information is available regarding the application of BSS on ruminants under high grain diet. The objective of this study was to evaluate the effects of dietary BSS supplementation on inflammatory response, ruminal fermentation characteristics and the composition of the ruminal bacterial community under high grain diet. Eight rumen-cannulated Hu sheep (59.7 ± 4.8 kg of initial body weight) were randomly assigned into a replicated 4 × 4 Latin square design trial. Sheep were fed a high grain diet (non-fiber carbohydrate: neutral detergent fiber = 2.03) supplemented either with 0.25 (LBS), 0.5 (MBS), 1.0 (HBS) or without (CON) g BSS /kg dry matter diet. On day 21 of each period, rumen content samples were obtained at 6 h postfeeding, and blood samples were obtained before morning feeding. The data showed that compared with control group, Dietary BSS supplementation decreased serum concentrations of tumor necrosis factor, interleukin (IL)-6, and IL-1β. The ruminal pH and acetate concentration for BSS treatment were improved, while concentration of propionate, butyrate and lactate was decreased. The result of Illumina MiSeq sequencing of 16S rRNA gene revealed that BSS addition can increase the proportion of Prevotella_1, Rikenellaceae_RC9_gut_group, Prevotella_7, and Selenomonas_1, and decrease the proportion of Lachnospiraceae_NK3A20_group. These results indicated that BSS attenuates high grain diet-induced inflammatory response and modifies ruminal fermentation. In addition, the BSS dietary supplementation at the level of 0.5 g/kg is recommended in sheep.
Collapse
|
43
|
Effects of Lactobacillus plantarum Q180 on Postprandial Lipid Levels and Intestinal Environment: A Double-Blind, Randomized, Placebo-Controlled, Parallel Trial. Nutrients 2020; 12:nu12010255. [PMID: 31963808 PMCID: PMC7019774 DOI: 10.3390/nu12010255] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/08/2020] [Accepted: 01/14/2020] [Indexed: 12/21/2022] Open
Abstract
Probiotics can improve the intestinal environment by enhancing beneficial bacteria to potentially regulate lipid levels; however, the underlying mechanisms remain unclear. The aim of this study was to investigate the effect of Lactobacillus plantarum Q180 (LPQ180) on postprandial lipid metabolism and the intestinal microbiome environment from a clinical perspective. A double-blind, randomized, placebo-controlled study was conducted including 70 participants of both sexes, 20 years of age and older, with healthy blood triacylglyceride (TG) levels below 200 mg/dL. Treatment with LPQ180 for 12 weeks significantly decreased LDL-cholesterol (p = 0.042) and apolipoprotein (Apo)B-100 (p = 0.003) levels, and decreased postprandial maximum concentrations (Cmax) and areas under the curve (AUC) of TG, chylomicron TG, ApoB-48, and ApoB-100. LPQ180 treatment significantly decreased total indole and phenol levels (p = 0.019). In addition, there was a negative correlation between baseline microbiota abundance and lipid marker change, which was negatively correlated with metabolites. This study suggests that LPQ180 might be developed as a functional ingredient to help maintain healthy postprandial lipid levels through modulating gut environment.
Collapse
|
44
|
Lv X, Cui K, Qi M, Wang S, Diao Q, Zhang N. Ruminal Microbiota and Fermentation in Response to Dietary Protein and Energy Levels in Weaned Lambs. Animals (Basel) 2020; 10:ani10010109. [PMID: 31936592 PMCID: PMC7022951 DOI: 10.3390/ani10010109] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/03/2020] [Accepted: 01/08/2020] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Ruminants, such as sheep, are economically important because they contribute to digesting and converting plant materials into edible meat and milk for humans to consume. An adequate plane of nutrients, such as energy and protein, is essential for rumen development and growth. However, sheep production is mostly affected by inadequate nutrition in rural areas of China. As one of the most prolific and perennial estrus breeds in China, Hu sheep has huge potential for catering to the growing meat demands of the market and consumers. In this study, the effects of dietary energy and protein levels on growth performance, microbial diversity, and physiological properties of the rumen in weaned lambs were evaluated. The results showed that a low dietary energy level restrained growth performance and changed the microbiota and associated ruminal fermentation phenotypes of lambs. However, protein had a minor effect. The findings are of great significance for promoting rumen development and establishing the optimal nutrient supply strategy for lambs. Abstract Supplying sufficient nutrients, such as dietary energy and protein, has a great effect on the growth and rumen development of ruminants. This study was conducted to evaluate the effects of dietary energy and protein levels on growth performance, microbial diversity, and structural and physiological properties of the rumen in weaned lambs. A total of 64 two-month-old Hu lambs were randomly allotted to 2 × 2 factorial arrangements with four replicates and with four lambs (half male and half female) in each replicate. The first factor was two levels of dietary metabolizable energy (ME) density (ME = 10.9 MJ/Kg or 8.6 MJ/Kg), and the second factor was two levels of dietary crude protein (CP) content (CP = 15.7% or 11.8%). The trial lasted for 60 days. A low dietary energy level restrained the growth performance of lambs (p < 0.05). The ruminal concentration of acetate and the ratio of acetate to propionate increased but the propionate concentration decreased significantly with the low energy diet. However, the rumen morphology was not affected by the diet energy and protein levels. Moreover, a low energy diet increased ruminal bacterial diversity but reduced the abundance of the phylum Proteobacteria (p < 0.05) and genus Succinivibrionaceae_uncultured (p < 0.05), which was associated with the change in ruminal fermentation phenotypes. By indicator species analysis, we found three indicator OTUs in the high energy group (Succinivibrionaceae_uncultured, Veillonellaceae_unclassified and Veillonellaceae_uncultured (p < 0.01)) and two indicator OTUs in the low energy group (Bacteroidales_norank and Lachnospiraceae_uncultured (p < 0.01)). In conclusion, these findings added new dimensions to our understanding of the diet effect on rumen microbial community and fermentation response, and are of great significance for establishing the optimal nutrient supply strategy for lambs.
Collapse
|
45
|
Lv X, Chai J, Diao Q, Huang W, Zhuang Y, Zhang N. The Signature Microbiota Drive Rumen Function Shifts in Goat Kids Introduced to Solid Diet Regimes. Microorganisms 2019; 7:microorganisms7110516. [PMID: 31683646 PMCID: PMC6921049 DOI: 10.3390/microorganisms7110516] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/21/2019] [Accepted: 10/29/2019] [Indexed: 11/24/2022] Open
Abstract
The feeding regime of early, supplementary solid diet improved rumen development and production in goat kids. However, the signature microbiota responsible for linking dietary regimes to rumen function shifts are still unclear. This work analyzed the rumen microbiome and functions affected by an early solid diet regime using a combination of machine learning algorithms. Volatile fatty acids (i.e., acetate, propionate and butyrate) fermented by microbes were found to increase significantly in the supplementary solid diet groups. Predominant genera were found to alter significantly from unclassified Sphingobacteriaceae (non-supplementary group) to Prevotella (supplementary solid diet groups). Random Forest classification model revealed signature microbiota for solid diet that positively correlated with macronutrient intake, and linearly increased with volatile fatty acid production. Bacteria associated with carbohydrate and protein metabolism were also identified. Utilization of a Fish Taco analysis portrayed a set of intersecting core species contributed to rumen function shifts by the solid diet regime. The core community structures consisted of the specific, signature microbiota and the manipulation of their symbiotic partners are manipulated by extra nutrients from concentrate and/or forage, and then produce more volatile fatty acids to promote rumen development and functions eventually host development. Our study provides mechanisms of the microbiome governed by a solid diet regime early in life, and highlights the signature microbiota involved in animal health and production.
Collapse
Affiliation(s)
- Xiaokang Lv
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China.
| | - Jianmin Chai
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China.
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, AR 72701, USA.
| | - Qiyu Diao
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China.
| | - Wenqin Huang
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China.
| | - Yimin Zhuang
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China.
| | - Naifeng Zhang
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing 100081, China.
| |
Collapse
|
46
|
Meller RA, Wenner BA, Ashworth J, Gehman AM, Lakritz J, Firkins JL. Potential roles of nitrate and live yeast culture in suppressing methane emission and influencing ruminal fermentation, digestibility, and milk production in lactating Jersey cows. J Dairy Sci 2019; 102:6144-6156. [PMID: 31030922 DOI: 10.3168/jds.2018-16008] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 03/05/2019] [Indexed: 12/11/2022]
Abstract
Concern over the carbon footprint of the dairy industry has led to various dietary approaches to mitigate enteric CH4 production. One approach is feeding the electron acceptor NO3-, thus outcompeting methanogens for aqueous H2. We hypothesized that a live yeast culture (LYC; Saccharomyces cerevisiae from Yea-Sacc 1026, Alltech Inc., Nicholasville, KY) would stimulate the complete reduction of NO3- to NH3 by selenomonads, thus decreasing the quantity of CH4 emissions per unit of energy-corrected milk production while decreasing blood methemoglobin concentration resulting from the absorbed intermediate, NO2-. Twelve lactating Jersey cows (8 multiparous and noncannulated; 4 primiparous and ruminally cannulated) were used in a replicated 4 × 4 Latin square design with a 2 × 2 factorial arrangement of treatments. Cattle were fed diets containing 1.5% NO3- (from calcium ammonium nitrate) or an isonitrogenous control diet (containing additional urea) and given a top-dress of ground corn without or with LYC, with the fourth week used for data collection. Noncannulated cows were spot measured for CH4 emission by mouth using GreenFeed (C-Lock Inc., Rapid City, SD). The main effect of NO3- decreased CH4 by 17% but decreased dry matter intake by 10% (from 19.8 to 17.8 kg/d) such that CH4:dry matter intake numerically decreased by 8% and CH4:milk net energy for lactation production was unaffected by treatment. Milk and milk fat production were not affected, but NO3- decreased milk protein from 758 to 689 g/d. Ruminal pH decreased more sharply after feeding for cows fed diets without NO3-. Acetate:propionate was greater for cows fed NO3-, particularly when combined with LYC (interaction effect). Blood methemoglobin was higher for cattle fed NO3- than for those fed the control diet but was low for both treatments (1.5 vs. 0.5%, respectively; only one measurement exceeded 5%), indicating minimal risk for NO2- accumulation at our feeding level of NO3-. Although neither apparent organic matter nor neutral detergent fiber digestibilities were affected, apparent N digestibility had an interaction for NO3- × LYC such that apparent N digestibility was numerically lowest for diets containing both NO3- and LYC compared with the other 3 diets. Under the conditions of this study, NO3- mitigated ruminal methanogenesis but also depressed dry matter intake and milk protein yield. Based on the fact that few interactions were detected, LYC had a minimal role in attenuating negative cow responses to NO3- supplementation.
Collapse
Affiliation(s)
- R A Meller
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - B A Wenner
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - J Ashworth
- Department of Animal Sciences, The Ohio State University, Columbus 43210
| | - A M Gehman
- Alltech, 3031 Catnip Hill Pike, Nicholasville, KY 40356
| | - J Lakritz
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus 43210
| | - J L Firkins
- Department of Animal Sciences, The Ohio State University, Columbus 43210.
| |
Collapse
|
47
|
Kindt A, Liebisch G, Clavel T, Haller D, Hörmannsperger G, Yoon H, Kolmeder D, Sigruener A, Krautbauer S, Seeliger C, Ganzha A, Schweizer S, Morisset R, Strowig T, Daniel H, Helm D, Küster B, Krumsiek J, Ecker J. The gut microbiota promotes hepatic fatty acid desaturation and elongation in mice. Nat Commun 2018; 9:3760. [PMID: 30218046 PMCID: PMC6138742 DOI: 10.1038/s41467-018-05767-4] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 07/05/2018] [Accepted: 07/25/2018] [Indexed: 02/06/2023] Open
Abstract
Interactions between the gut microbial ecosystem and host lipid homeostasis are highly relevant to host physiology and metabolic diseases. We present a comprehensive multi-omics view of the effect of intestinal microbial colonization on hepatic lipid metabolism, integrating transcriptomic, proteomic, phosphoproteomic, and lipidomic analyses of liver and plasma samples from germfree and specific pathogen-free mice. Microbes induce monounsaturated fatty acid generation by stearoyl-CoA desaturase 1 and polyunsaturated fatty acid elongation by fatty acid elongase 5, leading to significant alterations in glycerophospholipid acyl-chain profiles. A composite classification score calculated from the observed alterations in fatty acid profiles in germfree mice clearly differentiates antibiotic-treated mice from untreated controls with high sensitivity. Mechanistic investigations reveal that acetate originating from gut microbial degradation of dietary fiber serves as precursor for hepatic synthesis of C16 and C18 fatty acids and their related glycerophospholipid species that are also released into the circulation.
Collapse
Affiliation(s)
- Alida Kindt
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, 85764, Germany.,Department of Analytical Biosciences, Leiden Academic Centre for Drug Research, Leiden University, Leiden, 2333, Netherlands
| | - Gerhard Liebisch
- Institute of Clinical Chemistry, Universitätsklinikum Regensburg, Regensburg, 93053, Germany
| | - Thomas Clavel
- Functional Microbiome Research Group, Institute of Medical Microbiology, Universitätsklinikum Aachen, Aachen, 52074, Germany.,ZIEL Institute for Food and Health, Technische Universität München (TUM), Freising, 85354, Germany
| | - Dirk Haller
- ZIEL Institute for Food and Health, Technische Universität München (TUM), Freising, 85354, Germany.,Ernährung und Immunologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Gabriele Hörmannsperger
- ZIEL Institute for Food and Health, Technische Universität München (TUM), Freising, 85354, Germany.,Ernährung und Immunologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Hongsup Yoon
- ZIEL Institute for Food and Health, Technische Universität München (TUM), Freising, 85354, Germany.,Ernährung und Immunologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Daniela Kolmeder
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Alexander Sigruener
- Institute of Clinical Chemistry, Universitätsklinikum Regensburg, Regensburg, 93053, Germany
| | - Sabrina Krautbauer
- Institute of Clinical Chemistry, Universitätsklinikum Regensburg, Regensburg, 93053, Germany
| | - Claudine Seeliger
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Alexandra Ganzha
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Sabine Schweizer
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Rosalie Morisset
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Till Strowig
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, 38124, Germany
| | - Hannelore Daniel
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany
| | - Dominic Helm
- Proteomics and Bioanalytics, Technische Universität München (TUM), Freising, 85354, Germany
| | - Bernhard Küster
- Proteomics and Bioanalytics, Technische Universität München (TUM), Freising, 85354, Germany
| | - Jan Krumsiek
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, 85764, Germany. .,German Center for Diabetes Research (DZD), Neuherberg, 85764, Germany. .,Institute for Computational Biomedicine, Englander Institute for Precision Medicine, Department of Physiology and Biophysics, Weill Cornell Medicine, New York, 10021, USA.
| | - Josef Ecker
- Ernährungsphysiologie, Technische Universität München (TUM), Freising, 85354, Germany.
| |
Collapse
|
48
|
Vrioni G, Tsiamis C, Oikonomidis G, Theodoridou K, Kapsimali V, Tsakris A. MALDI-TOF mass spectrometry technology for detecting biomarkers of antimicrobial resistance: current achievements and future perspectives. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:240. [PMID: 30069442 PMCID: PMC6046294 DOI: 10.21037/atm.2018.06.28] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The laboratory diagnosis of infections is based on pathogen identification and antimicrobial susceptibility determination. The gold standard of cultivation, isolation and susceptibility testing is a time-consuming procedure and in some cases this can be threatening for patients' outcome. In the current review the applications of mass spectrometry in pathogen identification and especially in detecting biomarkers of antimicrobial resistance are analyzed. MALDI-TOF (matrix-assisted laser desorption/ionization time-of-flight) mass spectrometry is a new technology that has revolutionized pathogen identification and has also proven to accelerate detection of antimicrobial resistance compared to the traditional antibiotic susceptibility tests (AST) as well as DNA amplification methodologies. The technology has incorporated up to know four different methodologies: (I) the detection of differences of mass spectra of susceptible and resistant isolates of a given microorganism using the classical strain typing methodology; (II) the analysis of bacterial induced hydrolysis of β-lactam antibiotics; (III) the detection of stable (non-radioactive) isotope-labeled amino acids; and (IV) the analysis of bacterial growth in the presence and absence of antibiotics using an internal standard. The implementation of MALDI-TOF methodologies has improved detection of resistance in aerobic, Gram-positive and Gram-negative bacteria, mycobacteria, anaerobic bacteria, fungi and viruses. The MALDI-TOF is an easy to use, rapid, reliable, economical, and environmentally friendly methodology. However, this technology needs further development of research protocols that will be validated for routine application.
Collapse
Affiliation(s)
- Georgia Vrioni
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Constantinos Tsiamis
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George Oikonomidis
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Kalliopi Theodoridou
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Violeta Kapsimali
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Athanasios Tsakris
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| |
Collapse
|
49
|
Gajdács M, Spengler G, Urbán E. Identification and Antimicrobial Susceptibility Testing of Anaerobic Bacteria: Rubik's Cube of Clinical Microbiology? Antibiotics (Basel) 2017; 6:E25. [PMID: 29112122 PMCID: PMC5745468 DOI: 10.3390/antibiotics6040025] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 10/30/2017] [Accepted: 11/03/2017] [Indexed: 12/26/2022] Open
Abstract
Anaerobic bacteria have pivotal roles in the microbiota of humans and they are significant infectious agents involved in many pathological processes, both in immunocompetent and immunocompromised individuals. Their isolation, cultivation and correct identification differs significantly from the workup of aerobic species, although the use of new technologies (e.g., matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, whole genome sequencing) changed anaerobic diagnostics dramatically. In the past, antimicrobial susceptibility of these microorganisms showed predictable patterns and empirical therapy could be safely administered but recently a steady and clear increase in the resistance for several important drugs (β-lactams, clindamycin) has been observed worldwide. For this reason, antimicrobial susceptibility testing of anaerobic isolates for surveillance purposes or otherwise is of paramount importance but the availability of these testing methods is usually limited. In this present review, our aim was to give an overview of the methods currently available for the identification (using phenotypic characteristics, biochemical testing, gas-liquid chromatography, MALDI-TOF MS and WGS) and antimicrobial susceptibility testing (agar dilution, broth microdilution, disk diffusion, gradient tests, automated systems, phenotypic and molecular resistance detection techniques) of anaerobes, when should these methods be used and what are the recent developments in resistance patterns of anaerobic bacteria.
Collapse
Affiliation(s)
- Márió Gajdács
- Department of Medical Microbiology and Immunobiology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary.
| | - Gabriella Spengler
- Department of Medical Microbiology and Immunobiology, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary.
| | - Edit Urbán
- Institute of Clinical Microbiology, Faculty of Medicine, University of Szeged, 6725 Szeged, Hungary.
| |
Collapse
|