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Ma F, Zhang W, Zhou G, Qi Y, Mao HR, Chen J, Lu Z, Wu W, Zou X, Deng D, Lv S, Xiang N, Wang X. Epimedii Folium decoction ameliorates osteoporosis in mice through NLRP3/caspase-1/IL-1β signalling pathway and gut-bone axis. Int Immunopharmacol 2024; 137:112472. [PMID: 38897131 DOI: 10.1016/j.intimp.2024.112472] [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: 04/13/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024]
Abstract
AIM OF THE STUDY This study aimed to determine the effect of Epimedium brevicornu Maxim. (EF) on osteoporosis (OP) and its underlying molecular mechanisms, and to explore the existence of the "Gut-Bone Axis". MATERIAL AND METHODS The impact of EF decoction (EFD) on OP was evaluated using istopathological examination and biochemical assays. Targeted metabolomics was employed to identify key molecules and explore their molecular mechanisms. Alterations in the gut microbiota (GM) were evaluated by 16S rRNA gene sequencing. The role of the GM was clarified using an antibiotic cocktail and faecal microbiota transplantation. RESULTS EFD significantly increased the weight (14.06%), femur length (4.34%), abdominal fat weight (61.14%), uterine weight (69.86%), and insulin-like growth factor 1 (IGF-1) levels (59.48%), while reducing serum type I collagen cross-linked carboxy-terminal peptide (CTX-I) levels (15.02%) in osteoporotic mice. The mechanism of action may involve the regulation of the NLRP3/cleaved caspase-1/IL-1β signalling pathway in improving intestinal tight junction proteins and bone metabolism. Additionally, EFD modulated the abundance of related GM communities, such as Lactobacillus, Coriobacteriaceae, bacteria of family S24-7, Clostridiales, and Prevotella, and increased propionate and butyrate levels. Antibiotic-induced dysbiosis of gut bacteria disrupted OP regulation of bone metabolism, which was restored by the recovery of GM. CONCLUSIONS Our study is the first to demonstrate that EFD works in an OP mouse model by utilising GM and butyric acid. Thus, EF shows promise as a potential remedy for OP in the future.
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Affiliation(s)
- Fuqiang Ma
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China; The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, 24 Jinghua Road, Luoyang, Henan 471003, PR China
| | - Weiming Zhang
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China; Department of Dermatology, Wuhan No.1 Hospital, 215 Zhongshan Avenue, Wuhan, Hubei 430022, PR China
| | - Guangwen Zhou
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Yu Qi
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - He-Rong Mao
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Jie Chen
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Zhilin Lu
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China
| | - Wenjing Wu
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China
| | - Xinrong Zou
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China
| | - Danfang Deng
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China
| | - Shenhui Lv
- Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430065, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China.
| | - Nan Xiang
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China.
| | - Xiaoqin Wang
- The First Clinical Medical School, Hubei University of Chinese Medicine, 16 Huangjiahu West Road, Wuhan, Hubei 430061, PR China; Department of Nephrology, Affiliated Hospital of Hubei University of Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China; Hubei Key Laboratory of Theory and Application Research of Liver and Kidney in Traditional Chinese Medicine, Hubei Provincial Hospital of Traditional Chinese Medicine, 4 Huayuanshan Road, Wuhan, Hubei 430061, PR China.
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Lin T, Daddi L, Tang Y, Zhou Y, Liu B, Moore MD, Liu Z. Antrodia camphorata Supplementation during Early Life Alters Gut Microbiota and Inhibits Young-Onset Intestinal Tumorigenesis in APC1638N Mice Later in Life. Nutrients 2024; 16:2408. [PMID: 39125288 PMCID: PMC11314251 DOI: 10.3390/nu16152408] [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: 06/13/2024] [Revised: 07/16/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
Young-onset colorectal cancer is an increasing concern worldwide due to the growing prevalence of Westernized lifestyles in childhood and adolescence. Environmental factors during early life, particularly early-life nutrition, significantly contribute to the increasing incidence. Recently, there have been reports of beneficial effects, including anti-inflammation and anti-cancer, of a unique fungus (Antrodia camphorate, AC) native to Taiwan. The objective of this study is to investigate the impact of AC supplementation in early life on the development of young-onset intestinal tumorigenesis. APC1638N mice were fed with a high-fat diet (HF) at 4-12 weeks of age, which is equivalent to human childhood/adolescence, before switching to a normal maintenance diet for an additional 12 weeks up to 24 weeks of age, which is equivalent to young to middle adulthood in humans. Our results showed that the body weight in the HF groups significantly increased after 8 weeks of feeding (p < 0.05). Following a switch to a normal maintenance diet, the change in body weight persisted. AC supplementation significantly suppressed tumor incidence and multiplicity in females (p < 0.05) and reduced IGF-1 and Wnt/β-catenin signaling (p < 0.05). Moreover, it altered the gut microbiota, suppressed inflammatory responses, and created a microenvironment towards suppressing tumorigenesis later in life.
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Affiliation(s)
- Tingchun Lin
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA 01003, USA; (T.L.); (Y.T.); (B.L.)
| | - Lauren Daddi
- Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA; (L.D.); (Y.Z.)
| | - Ying Tang
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA 01003, USA; (T.L.); (Y.T.); (B.L.)
| | - Yanjiao Zhou
- Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA; (L.D.); (Y.Z.)
| | - Buping Liu
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA 01003, USA; (T.L.); (Y.T.); (B.L.)
- School of Public Health and Management, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Matthew D. Moore
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA 01003, USA;
| | - Zhenhua Liu
- Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA 01003, USA; (T.L.); (Y.T.); (B.L.)
- UMass Cancer Center, University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
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3
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Li K, Cui Y, Zheng X, Min C, Zhang J, Yan Z, Ji Y, Ge F, Ji H, Zhu F. Jian Gan powder ameliorates immunological liver injury in mice by modulating the gut microbiota and metabolic profiles. Eur J Med Res 2024; 29:240. [PMID: 38641655 PMCID: PMC11031866 DOI: 10.1186/s40001-024-01827-2] [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: 01/17/2024] [Accepted: 04/03/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Immunological liver injury (ILI) is a common liver disease associated with the microbiota-gut-liver axis. Jian Gan powder (JGP) exhibits both protective and therapeutic effects on hepatitis virus-induced ILI in the clinic. However, the underlying mechanisms remain elusive. The aim of this study is to investigate the hepatoprotective effects and associated mechanisms of JGP in the context of gut microbiota, utilizing a mouse model of ILI. METHODS The mouse model was established employing Bacillus Calmette-Guérin (BCG) plus lipopolysaccharide (LPS). Following treatment with JGP (7.5, 15, or 30 g/kg), serum, liver, and fresh fecal samples were analyzed. 16S rRNA gene sequencing and untargeted metabolomics profiling were performed to assess the role of JGP on the gut microbiota and its metabolites. RESULTS JGP treatment markedly reduced serum IFN-γ, IL-6, IL-22, and hepatic p-STAT3 (phosphorylated transducer and activator of transcription-3) expression. In contrast, JGP increased the percentage of proliferating cell nuclear antigen-positive liver cells in treated mice. Fecal 16S rRNA gene sequencing revealed that JGP treatment restored the levels of Alloprevotella, Burkholderia-Caballeronia-Paraburkholderia, Muribaculum, Streptococcus, and Stenotrophomonas. Additionally, metabolomics analysis of fecal samples showed that JGP restored the levels of allylestrenol, eplerenone, phosphatidylethanolamine (PE) (P-20:0/0:0), sphingomyelin (SM) d27:1, soyasapogenol C, chrysin, and soyasaponin I. CONCLUSIONS JGP intervention improves ILI by restoring gut microbiota and modifying its metabolic profiles. These results provide a novel insight into the mechanism of JGP in treating ILI and the scientific basis to support its clinical application.
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Affiliation(s)
- Kun Li
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Building 9, Nanjing, 210046, Jiangsu, People's Republic of China
- Department of Gastroenterology, Hai'an Hospital of Traditional Chinese Medicine Affiliated to Medical College of Yangzhou University, Nantong, People's Republic of China
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, People's Republic of China
| | - Yadong Cui
- College of Pharmaceutical Science, Soochow University, Suzhou, People's Republic of China
| | - Xue Zheng
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Building 9, Nanjing, 210046, Jiangsu, People's Republic of China
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, People's Republic of China
| | - Chunyan Min
- Suzhou Institute for Drug Control, Suzhou, People's Republic of China
| | - Jian Zhang
- College of Pharmaceutical Science, Soochow University, Suzhou, People's Republic of China
| | - Zhanpeng Yan
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Building 9, Nanjing, 210046, Jiangsu, People's Republic of China
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, People's Republic of China
| | - Yu Ji
- Department of Gastroenterology, Hai'an Hospital of Traditional Chinese Medicine Affiliated to Medical College of Yangzhou University, Nantong, People's Republic of China
| | - Fei Ge
- Department of Gastroenterology, Hai'an Hospital of Traditional Chinese Medicine Affiliated to Medical College of Yangzhou University, Nantong, People's Republic of China
| | - Hualiang Ji
- Department of Gastroenterology, Affiliated Haian People's Hospital of Nantong University, 17 Zhong Ba Zhong Road, Hai'an, 226600, Jiangsu, People's Republic of China.
| | - Fangshi Zhu
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Building 9, Nanjing, 210046, Jiangsu, People's Republic of China.
- Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, People's Republic of China.
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Yu SY, Oh BS, Ryu SW, Bak JE, Heo ES, Moon JC, Jeong JH, Lee JH. Novel microbiota Mesosutterella faecium sp. nov. has a protective effect against inflammatory bowel disease. Front Microbiol 2024; 15:1342098. [PMID: 38633706 PMCID: PMC11022602 DOI: 10.3389/fmicb.2024.1342098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/18/2024] [Indexed: 04/19/2024] Open
Abstract
A novel Gram-negative, obligate anaerobe, non-motile, flagella-lacking, catalase- and oxidase-negative, coccobacilli-shaped bacterial strain designated AGMB02718T was isolated from swine feces. The 16S rRNA gene analysis indicated that strain AGMB02718T belonged to the genus Mesosutterella with the highest similarity to M. multiformis 4NBBH2T (= DSM 106860T) (sequence similarity of 96.2%), forming a distinct phylogenetic lineage. Its growth occurred at 25-45°C (optimal 37°C) and in 0.5-1% NaCl (optimal 0.5%). Strain AGMB02718T was asaccharolytic and contained menaquinone 6 (MK-6) and methylmenaquinone 6 (MMK-6) as the predominant respiratory quinones. The major cellular fatty acids in the isolate were C18:1ω9c and C16:0. Based on the whole-genome sequencing analysis, strain AGMB02718T had a 2,606,253 bp circular chromosome with a G + C content of 62.2%. The average nucleotide identity value between strain AGMB02718T and M. multiformis 4NBBH2T was 72.1%, while the digital DNA-DNA hybridization value was 20.9%. Interestingly, genome analysis suggested that strain AGMB02718T possessed a low-toxicity lipopolysaccharide (LPS) because the genome of the isolate does not include lpxJ and lpxM genes for Kdo2-Lipid A (KLA) assembly, which confers high toxicity to LPS. Moreover, in vitro macrophage stimulation assay confirmed that AGMB02718T produced LPS with low toxicity. Because the low-toxicity LPS produced by the Sutterellaceae family is involved in regulating host immunity and low-toxicity LPS-producing strains can help maintain host immune homeostasis, we evaluated the anti-inflammatory activity of strain AGMB02718T against inflammatory bowel disease (IBD). As a result, strain AGMB02718T was able to prevent the inflammatory response in a dextran sulfate sodium (DSS)-induced colitis model. Therefore, this strain represents a novel species of Mesosutterella that has a protective effect against DSS-induced colitis, and the proposed name is Mesosutterella faecium sp. nov. The type strain is AGMB02718T (=GDMCC 1.2717T = KCTC 25541T).
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Affiliation(s)
- Seung Yeob Yu
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
- BioMedical Sciences Graduate Program (BMSGP), Chonnam National University, Hwasun, Republic of Korea
| | - Byeong Seob Oh
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Seoung Woo Ryu
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
- BioMedical Sciences Graduate Program (BMSGP), Chonnam National University, Hwasun, Republic of Korea
| | - Jeong Eun Bak
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
- BioMedical Sciences Graduate Program (BMSGP), Chonnam National University, Hwasun, Republic of Korea
| | - Eun Seo Heo
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
- University of Science and Technology (UST), Daejeon, Republic of Korea
| | | | - Jae-Ho Jeong
- BioMedical Sciences Graduate Program (BMSGP), Chonnam National University, Hwasun, Republic of Korea
| | - Ju Huck Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
- University of Science and Technology (UST), Daejeon, Republic of Korea
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Shen CL, Wang R, Santos JM, Elmassry MM, Stephens E, Kim N, Neugebauer V. Ginger alleviates mechanical hypersensitivity and anxio-depressive behavior in rats with diabetic neuropathy through beneficial actions on gut microbiome composition, mitochondria, and neuroimmune cells of colon and spinal cord. Nutr Res 2024; 124:73-84. [PMID: 38402829 DOI: 10.1016/j.nutres.2024.01.014] [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: 11/23/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 02/27/2024]
Abstract
The relationship among gut microbiota, mitochondrial dysfunction/neuroinflammation, and diabetic neuropathic pain (DNP) has received increased attention. Ginger has antidiabetic and analgesic effects because of its anti-inflammatory property. We examined the effects of gingerols-enriched ginger (GEG) supplementation on pain-associated behaviors, gut microbiome composition, and mitochondrial function and neuroinflammation of colon and spinal cord in DNP rats. Thirty-three male rats were randomly divided into 3 groups: control group, DNP group (high-fat diet plus single dose of streptozotocin at 35 mg/kg body weight, and GEG group (DNP+GEG at 0.75% in the diet for 8 weeks). Von Frey and open field tests were used to assess pain sensitivity and anxio-depressive behaviors, respectively. Colon and spinal cord were collected for gene expression analysis. 16S rRNA gene sequencing was done from cecal samples and microbiome data analysis was performed using QIIME 2. GEG supplementation mitigated mechanical hypersensitivity and anxio-depressive behavior in DNP animals. GEG supplementation suppressed the dynamin-related protein 1 protein expression (colon) and gene expression (spinal cord), astrocytic marker GFAP gene expression (colon and spinal cord), and tumor necrosis factor-α gene expression (colon, P < .05; spinal cord, P = .0974) in DNP rats. GEG supplementation increased microglia/macrophage marker CD11b gene expression in colon and spinal cord of DNP rats. GEG treatment increased abundance of Acinetobacter, Azospirillum, Colidextribacter, and Fournierella but decreased abundance of Muribaculum intestinale in cecal feces of rats. This study demonstrates that GEG supplementation decreased pain, anxio-depression, and neuroimmune cells, and improved the composition of gut microbiomes and mitochondrial function in rats with diabetic neuropathy.
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Affiliation(s)
- Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Center of Excellence for Integrative Health, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Obesity Research Institute, Texas Tech University, Lubbock, TX, USA.
| | - Rui Wang
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Julianna Maria Santos
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Moamen M Elmassry
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Emily Stephens
- Department of Medical Education, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Nicole Kim
- Department of Biology, Texas Tech University, Lubbock, TX, USA
| | - Volker Neugebauer
- Center of Excellence for Integrative Health, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Garrison Institute on Aging, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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Guo J, Shi W, Li X, Yang B, Qin C, Su L. Comparative Analysis of Gut Microbiomes in Laboratory Chinchillas, Ferrets, and Marmots: Implications for Pathogen Infection Research. Microorganisms 2024; 12:646. [PMID: 38674591 PMCID: PMC11051751 DOI: 10.3390/microorganisms12040646] [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: 02/20/2024] [Revised: 03/17/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
Gut microbes play a vital role in the health and disease of animals, especially in relation to pathogen infections. Chinchillas, ferrets, and marmots are commonly used as important laboratory animals for infectious disease research. Here, we studied the bacterial and fungal microbiota and discovered that chinchillas had higher alpha diversity and a higher abundance of bacteria compared to marmots and ferrets by using the metabarcoding of 16S rRNA genes and ITS2, coupled with co-occurrence network analysis. The dominant microbes varied significantly among the three animal species, particularly in the gut mycobiota. In the ferrets, the feces were dominated by yeast such as Rhodotorula and Kurtzmaniella, while in the chinchillas, we found Teunomyces and Penicillium dominating, and Acaulium, Piromyces, and Kernia in the marmots. Nevertheless, the dominant bacterial genera shared some similarities, such as Clostridium and Pseudomonas across the three animal species. However, there were significant differences observed, such as Vagococcus and Ignatzschineria in the ferrets, Acinetobacter and Bacteroides in the chinchillas, and Bacteroides and Cellvibrio in the marmots. Additionally, our differential analysis revealed significant differences in classification levels among the three different animal species, as well as variations in feeding habitats that resulted in distinct contributions from the host microbiome. Therefore, our data are valuable for monitoring and evaluating the impacts of the microbiome, as well as considering potential applications.
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Affiliation(s)
| | | | | | | | | | - Lei Su
- NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, International Center for Technology and Innovation of Animal Model, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Center, Peking Union Medical College (PUMC), Beijing 100021, China; (J.G.); (W.S.); (X.L.); (B.Y.); (C.Q.)
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7
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Alizadeh M, Wong U, Siaton BC, Patil SA, George L, Raufman JP, Scott WH, von Rosenvinge EC, Ravel J, Cross RK. ExpLOring the role of the intestinal MiCrobiome in InflammATory bowel disease-AssocIated SpONdylarthritis (LOCATION-IBD). Heliyon 2024; 10:e26571. [PMID: 38420375 PMCID: PMC10900801 DOI: 10.1016/j.heliyon.2024.e26571] [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: 05/14/2023] [Revised: 11/12/2023] [Accepted: 02/15/2024] [Indexed: 03/02/2024] Open
Abstract
Background Inflammatory Bowel Disease (IBD)-associated arthritis is a frequent and potentially debilitating complication of IBD, that can affect those with or without active intestinal disease, and is often difficult to treat. The microbiome is known to play a role in IBD development and has been shown to be associated with inflammatory arthritis without concomitant IBD, but its role in IBD-associated arthritis is still unexplored. Further, disease localization is associated with development of IBD-associated arthritis, and stool compositional profiles are predictive of disease localization, yet mucosal location-specific microbiomes have not been well characterized. To address this gap in understanding, we designed a study (LOCATION-IBD) to characterize the mucosa-associated intestinal microbiome and metabolome in IBD-associated arthritis. Methods Adults with an established diagnosis of IBD undergoing clinical colonoscopy between May of 2021 and February of 2023 were invited to participate in this study; those interested in participation who met inclusion criteria were enrolled. Prior to enrollment, participants were stratified into those with or without IBD-associated arthritis. All participants were interviewed and had clinical and demographic data collected, and 97.8% completed clinical colonoscopy with biopsy collection. Results and conclusion A total of 182 participants, 53 with confirmed IBD-associated arthritis, were enrolled in this study, resulting in 1151 biopsies obtained for microbiome and metabolome analysis (median 6, mean 6.3 per participant). Clinical and demographic data obtained from the study population will be analyzed with microbiome and metabolome data obtained from biopsies, with the goal of better understanding the mechanisms underpinning the host-microbiome relationship associated the development of IBD-associated arthritis.
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Affiliation(s)
- Madeline Alizadeh
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - Uni Wong
- Department of Veterans Affairs, Washington DC Veterans Health Administration, Washington DC, USA
| | - Bernadette C Siaton
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Seema A Patil
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - Lauren George
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - Jean-Pierre Raufman
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - William H Scott
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - Erik C von Rosenvinge
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Veterans Affairs, Veterans Affairs Maryland Health Care System, Baltimore, MD, USA
| | - Jacques Ravel
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Raymond K Cross
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
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8
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Kesh K, Tao J, Ghosh N, Jalodia R, Singh S, Dawra R, Roy S. Prescription opioids induced microbial dysbiosis worsens severity of chronic pancreatitis and drives pain hypersensitivity. Gut Microbes 2024; 16:2310291. [PMID: 38329115 PMCID: PMC10857465 DOI: 10.1080/19490976.2024.2310291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/22/2024] [Indexed: 02/09/2024] Open
Abstract
Opioids, such as morphine and oxycodone, are widely used for pain management associated with chronic pancreatitis (CP); however, their impact on the progression and pain sensitivity of CP has never been evaluated. This report investigates the impact of opioid use on the severity of CP, pain sensitivity, and the gut microbiome. C57BL/6 mice were divided into control, CP, CP with morphine/oxycodone, and either morphine or oxycodone alone groups. CP was induced by administration of caerulein (50ug/kg/h, i.p. hourly x7, twice a week for 10 weeks). The mouse-to-pancreas weight ratio, histology, and Sirius red staining were performed to measure CP severity. Tail flick and paw pressure assays were used to measure thermal and mechanical pain. DNA was extracted from the fecal samples and subjected to whole-genome shotgun sequencing. Germ-free mice were used to validate the role of gut microbiome in sensitizing acute pancreatic inflammation. Opioid treatment exacerbates CP by increasing pancreatic necrosis, fibrosis, and immune-cell infiltration. Opioid-treated CP mice exhibited enhanced pain hypersensitivity and showed distinct clustering of the gut microbiome compared to untreated CP mice, with severely compromised gut barrier integrity. Fecal microbiota transplantation (FMT) from opioid-treated CP mice into germ-free mice resulted in pancreatic inflammation in response to a suboptimal caerulein dose. Together, these analyses revealed that opioids worsen the severity of CP and induce significant alterations in pain sensitivity and the gut microbiome in a caerulein CP mouse model. Microbial dysbiosis plays an important role in sensitizing the host to pancreatic inflammation.
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Affiliation(s)
- Kousik Kesh
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Junyi Tao
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Nillu Ghosh
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Richa Jalodia
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Salma Singh
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Rajinder Dawra
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Sabita Roy
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
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9
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Bang S, Shin YH, Ma X, Park SM, Graham DB, Xavier RJ, Clardy J. A Cardiolipin from Muribaculum intestinale Induces Antigen-Specific Cytokine Responses. J Am Chem Soc 2023; 145:23422-23426. [PMID: 37871232 PMCID: PMC10623554 DOI: 10.1021/jacs.3c09734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/07/2023] [Accepted: 10/18/2023] [Indexed: 10/25/2023]
Abstract
An systematic phenotypic screen of the mouse gut microbiome for metabolites with an immunomodulatory effect identified Muribaculum intestinale as one of only two members with an oversized effect on T-cell populations. Here we report the identification and characterization of a lipid, MiCL-1, as the responsible metabolite. MiCL-1 is an 18:1-16:0 cardiolipin, whose close relatives are found on concave lipid surfaces of both mammals and bacteria. MiCL-1 was synthesized to confirm the structural analysis and functionally characterized in cell-based assays. It has a highly restrictive structure-activity profile, as its chain-switched analog fails to induce responses in any of our assays. MiCL-1 robustly induces the production of pro-inflammatory cytokines like TNF-α, IL-6, and IL-23, but has no detectable effect on the anti-inflammatory cytokine IL-10. As is the case with other recently discovered immunomodulatory lipids, MiCL-1 requires functional TLR2 and TLR1 but not TLR6 in cell-based assays.
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Affiliation(s)
- Sunghee Bang
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School and Blavatnik Institute, Boston, Massachusetts 02115, United States
| | - Yern-Hyerk Shin
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School and Blavatnik Institute, Boston, Massachusetts 02115, United States
| | - Xiao Ma
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School and Blavatnik Institute, Boston, Massachusetts 02115, United States
- Laboratory
of Systems Pharmacology, Harvard Medical
School and Blavatnik Institute, Boston, Massachusetts 02115, United States
| | - Sung-Moo Park
- Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Department
of Molecular Biology, Massachusetts General
Hospital, Boston, Massachusetts 02114, United States
- Center
for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Daniel B. Graham
- Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Department
of Molecular Biology, Massachusetts General
Hospital, Boston, Massachusetts 02114, United States
- Center
for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Ramnik J. Xavier
- Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Department
of Molecular Biology, Massachusetts General
Hospital, Boston, Massachusetts 02114, United States
- Center
for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Jon Clardy
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School and Blavatnik Institute, Boston, Massachusetts 02115, United States
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10
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Song X, Huang Q, Yang Y, Ma L, Liu W, Ou C, Chen Q, Zhao T, Xiao Z, Wang M, Jiang Y, Yang Y, Zhang J, Nan Y, Wu W, Ai K. Efficient Therapy of Inflammatory Bowel Disease (IBD) with Highly Specific and Durable Targeted Ta 2 C Modified with Chondroitin Sulfate (TACS). ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2301585. [PMID: 37224059 DOI: 10.1002/adma.202301585] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/06/2023] [Indexed: 05/26/2023]
Abstract
Non-invasive localization of lesions and specific targeted therapy are still the main challenges for inflammatory bowel disease (IBD). Ta, as a medical metal element, has been widely used in the treatment of different diseases because of its excellent physicochemical properties but is still far from being explored in IBD. Here, Ta2 C modified with chondroitin sulfate (CS) (TACS) is evaluated as a highly targeted therapy nanomedicine for IBD. Specifically, TACS is modified with dual targeting CS functions due to IBD lesion-specific positive charges and high expression of CD44 receptors. Thanks to the acid stability, sensitive CT imaging function, and strong reactive oxygen species (ROS) elimination ability, oral TACS can accurately locate and delineate IBD lesions through non-invasive CT imaging, and specifically targeted treat IBD effectively because high levels of ROS are a central factor in the progression of IBD. As expected, TACS has much better imaging and therapeutic effects than clinical CT contrast agent and first-line drug 5-aminosalicylic acid, respectively. The mechanism of TACS treatment mainly involves protection of mitochondria, elimination of oxidative stress, inhibiting macrophage M1 polarization, protection of intestinal barrier, and restoration of intestinal flora balance. Collectively, this work provides unprecedented opportunities for oral nanomedicines to targeted therapy of IBD.
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Affiliation(s)
- Xiangping Song
- Department of Geriatric Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Qiong Huang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, P. R. China
| | - Yuqi Yang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, P. R. China
| | - Liang Ma
- Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Wenguang Liu
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Chunlin Ou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Qiaohui Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- Hunan Provincial Key Laboratory of Cardiovascular Research, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
| | - Tianjiao Zhao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- Hunan Provincial Key Laboratory of Cardiovascular Research, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
| | - Zuoxiu Xiao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- Hunan Provincial Key Laboratory of Cardiovascular Research, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
| | - Mingyuan Wang
- Department of Geriatric Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Yitian Jiang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- Hunan Provincial Key Laboratory of Cardiovascular Research, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
| | - Yunrong Yang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, P. R. China
| | - Jinping Zhang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, P. R. China
| | - Yayun Nan
- Geriatric Medical Center, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, 750002, China
| | - Wei Wu
- Department of Geriatric Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Kelong Ai
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- Hunan Provincial Key Laboratory of Cardiovascular Research, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410008, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment., Ministry of Education, Xiangya Hospital, Central South University, Changsha, 410008, China
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11
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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.
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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
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12
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Skeletal muscle insulin resistance and adipose tissue hypertrophy persist beyond the reshaping of gut microbiota in young rats fed a fructose-rich diet. J Nutr Biochem 2023; 113:109247. [PMID: 36496062 DOI: 10.1016/j.jnutbio.2022.109247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 10/17/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
To investigate whether short term fructose-rich diet induces changes in the gut microbiota as well as in skeletal muscle and adipose tissue physiology and verify whether they persist even after fructose withdrawal, young rats of 30 d of age were fed for 3 weeks a fructose-rich or control diet. At the end of the 3-weeks period, half of the rats from each group were maintained for further 3 weeks on a control diet. Metagenomic analysis of gut microbiota and short chain fatty acids levels (faeces and plasma) were investigated. Insulin response was evaluated at the whole-body level and both in skeletal muscle and epididymal adipose tissue, together with skeletal muscle mitochondrial function, oxidative stress, and lipid composition. In parallel, morphology and physiological status of epididymal adipose tissue was also evaluated. Reshaping of gut microbiota and increased content of short chain fatty acids was elicited by the fructose diet and abolished by switching back to control diet. On the other hand, most metabolic changes elicited by fructose-rich diet in skeletal muscle and epididymal adipose tissue persisted after switching to control diet. Increased dietary fructose intake even on a short-time basis elicits persistent changes in the physiology of metabolically relevant tissues, such as adipose tissue and skeletal muscle, through mechanisms that go well beyond the reshaping of gut microbiota. This picture delineates a harmful situation, in particular for the young populations, posed at risk of metabolic modifications that may persist in their adulthood.
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13
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Yang DF, Huang WC, Wu CW, Huang CY, Yang YCSH, Tung YT. Acute sleep deprivation exacerbates systemic inflammation and psychiatry disorders through gut microbiota dysbiosis and disruption of circadian rhythms. Microbiol Res 2023; 268:127292. [PMID: 36608535 DOI: 10.1016/j.micres.2022.127292] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/23/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Acute sleep deprivation (ASD) is often observed in shift workers and characterized by drowsiness and unrelenting exhaustion. The physiological and psychological effects of ASD include anxiety, depression, cognitive impairment, systemic inflammation, stress responses, and disruptions of gut microbiota. However, the mechanisms involved in the ASD-associated circadian dysregulations with regard to gut dysbiosis, systemic inflammation, physiological modulation, and psychiatry disorders remain unclear. The aim of this study was to investigate whether central nervous system disorders induced by ASD are related to inflammation, barrier dysfunction, and circadian dysregulation. We also assessed impacts on microbiota succession. Male C57BL/6 mice were randomly allocated to the control and sleep deprivation (SD) groups. Mice in the SD group were subjected to 72 h of paradoxical SD using the modified multiple-platform method for ASD induction (72 h rapid eye movement-SD). The effects of ASD on dietary consumption, behaviors, cytokines, microbiota, and functional genes were determined. The appetite of the SD group was significantly higher than that of the control group, but the body weight was significantly lower than that of the control group. The anxiety-like behaviors were found in the SD group. Alpha and beta diversity of microbiota showed significant decrease after ASD induction; the relative abundance of Candidatus_Arthromitus and Enterobacter was increased, whereas that abundance of Lactobacillus, Muribaculum, Monoglobus, Parasutterella, and others was decreased in the SD group. These effects were accompanied by reduction in fecal propionic acid. In the proximal colon, the SD group exhibited significantly higher inflammation (tumor necrosis factor-α [TNF-α]) and dysregulation of the circadian rhythms (brain and muscle ARNT-like 1 [BMAL1] and cryptochrome circadian regulator 1 [CRY1]) and tight junction genes (occludin [OCLN]) than the control group. Gut barrier dysfunction slightly increased the plasma concentration of lipopolysaccharide and significantly elevated TNF-α. Inflammatory signals might be transduced through the brain via TNF receptor superfamily member 1 A (TNFRSF1A), which significantly increased the levels of microglia activation marker (ionized calcium-binding adapter molecule 1 [IBA1]) and chemokine (intercellular adhesion molecule 1 [ICAM1]) in the cerebral cortex. The serotonin receptor (5-hydroxytryptamine 1A receptor [5-HT1AR]) was significantly downregulated in the hippocampus. In summary, 72 h of rapid eye movement-SD induced physiological and psychological stress, which led to disruption of the circadian rhythms and gut microbiota dysbiosis; these effects were related to decrement of short chain fatty acids, gut inflammation, and hyperpermeability. The microbiota may be utilized as preventive and therapeutic strategies for ASD from the perspectives of medicine and nutrition.
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Affiliation(s)
- Deng-Fa Yang
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 110, Taiwan.
| | - Wen-Ching Huang
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 112, Taiwan.
| | - Changwei W Wu
- Graduate Institute of Mind, Brain and Consciousness, Taipei Medical University, Taipei 110, Taiwan; Brain and Consciousness Research Center, Shuang Ho Hospital-Taipei Medical University, New Taipei 235, Taiwan.
| | - Ching-Ying Huang
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung 402, Taiwan.
| | - Yu-Chen S H Yang
- Joint Biobank, Office of Human Research, Taipei Medical University, Taipei 110, Taiwan.
| | - Yu-Tang Tung
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 402, Taiwan; Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan.
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14
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Pan H, Chen X, Wang P, Peng J, Li J, Ding K. Effects of Nemacystus decipiens polysaccharide on mice with antibiotic associated diarrhea and colon inflammation. Food Funct 2023; 14:1627-1635. [PMID: 36688462 DOI: 10.1039/d1fo02813h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Antibiotic associated diarrhea (AAD) is a common side effect of antibiotic therapy in which gut microbiota plays an important role in the disease. However, the function of gut microbiota in this disease is still not entirely clear. Polysaccharides have shown strong activity in shaping gut microbiota. Whether the polysaccharide can intervene with the microbiota to improve ADD has not been determined. In this study, we extract crude polysaccharides from Nemacystus decipiens (N. decipiens), a traditional Chinese medicine (TCM), named NDH0. The crude polysaccharide NDH0 might significantly relieve the symptom of mice with AAD, including a reduction in body weight, shortening of cecum index and the infiltration of inflammatory cells into the colon. NDH0-treated mice exhibited more abundant gut microbial diversity; significantly increased the abundance of Muribaculum, Lactobacillus, and Bifidobacterium and decreased the abundance of Enterobacter and Clostridioides at genus level. NDH0 treatment down-regulated the level of pro-inflammatory cytokines, including IL-1β and IL-6 in colon tissue. NDH0 protected the integrity of colon tissues and partially inactivated the related inflammation pathway by maintaining occludin and SH2-containing Inositol 5'-Phosphatase (SHIP). NDH0 could alleviate symptoms of diarrhea by modulating gut microbiota composition, improving intestinal integrity and reducing inflammation. The underlying protective mechanism was to reduce the abundance of opportunistic pathogens and maintain SHIP protein expression. Collectively, our results demonstrated the role of NDH0 as a potential intestinal protective agent in gut dysbiosis.
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Affiliation(s)
- Haoyu Pan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Road, Shanghai, 201203, China.,Glycochemistry and Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai, 201203, China.,University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing, 100049, China
| | - Xia Chen
- Glycochemistry and Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai, 201203, China.,University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing, 100049, China
| | - PeiPei Wang
- Glycochemistry and Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai, 201203, China.,University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing, 100049, China
| | - Junfeng Peng
- Glycochemistry and Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai, 201203, China.,University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing, 100049, China.,Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Judong Li
- Glycochemistry and Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai, 201203, China.,University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing, 100049, China.,Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Kan Ding
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Road, Shanghai, 201203, China.,Glycochemistry and Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai, 201203, China.,University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing, 100049, China
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15
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González-Chávez SA, Salas-Leiva JS, Salas-Leiva DE, López-Loeza SM, Sausameda-García J, Orrantia-Borunda E, Burgos-Vargas R, Alvarado-Jáquez MF, Torres-Quintana M, Cuevas-Martínez R, Chaparro-Barrera E, Marín-Terrazas C, Espino-Solís GP, Romero-López JP, Bernal-Alferes BDJ, Pacheco-Tena C. Levofloxacin induces differential effects in the transcriptome between the gut, peripheral and axial joints in the Spondyloarthritis DBA/1 mice: Improvement of intestinal dysbiosis and the overall inflammatory process. PLoS One 2023; 18:e0281265. [PMID: 36730179 PMCID: PMC9894406 DOI: 10.1371/journal.pone.0281265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 01/18/2023] [Indexed: 02/03/2023] Open
Abstract
To analyze the effect of levofloxacin-induced intestinal microbiota modifications on intestinal, joint, and systemic inflammation in the DBA/1 mice with spontaneous arthritis. The study included two groups of mice, one of which received levofloxacin. The composition and structure of the microbiota were determined in the mice's stool using 16S rRNA sequencing; the differential taxa and metabolic pathway between mice treated with levofloxacin and control mice were also defied. The effect of levofloxacin was evaluated in the intestines, hind paws, and spines of mice through DNA microarray transcriptome and histopathological analyses; systemic inflammation was measured by flow cytometry. Levofloxacin decreased the pro-inflammatory bacteria, including Prevotellaceae, Odoribacter, and Blautia, and increased the anti-inflammatory Muribaculaceae in mice's stool. Histological analysis confirmed the intestinal inflammation in control mice, while in levofloxacin-treated mice, inflammation was reduced; in the hind paws and spines, levofloxacin also decreased the inflammation. Microarray showed the downregulation of genes and signaling pathways relevant in spondyloarthritis, including several cytokines and chemokines. Levofloxacin-treated mice showed differential transcriptomic profiles between peripheral and axial joints and intestines. Levofloxacin decreased the expression of TNF-α, IL-23a, and JAK3 in the three tissues, but IL-17 behaved differently in the intestine and the joints. Serum TNF-α was also reduced in levofloxacin-treated mice. Our results suggest that the microbiota modification aimed at reducing pro-inflammatory and increasing anti-inflammatory bacteria could potentially be a coadjuvant in treating inflammatory arthropathies.
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Affiliation(s)
- Susana Aideé González-Chávez
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Joan S. Salas-Leiva
- Departamento de Medio Ambiente y Energía, CONACyT-Centro de Investigación en Materiales Avanzados, Chihuahua, México
| | - Dayana E. Salas-Leiva
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
- Department of Biochemistry and Molecular Biology, Institute for Comparative Genomics (ICG), Dalhousie University, Halifax, NS, Canada
| | - Salma Marcela López-Loeza
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Jasanai Sausameda-García
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Erasmo Orrantia-Borunda
- Departamento de Medio Ambiente y Energía, CONACyT-Centro de Investigación en Materiales Avanzados, Chihuahua, México
| | - Rubén Burgos-Vargas
- Department of Rheumatology, Hospital General de México, "Dr. Eduardo Liceaga", Ciudad de México, México
| | | | - Mayra Torres-Quintana
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Rubén Cuevas-Martínez
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Eduardo Chaparro-Barrera
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Carlos Marín-Terrazas
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
| | - Gerardo Pável Espino-Solís
- Translational Research Laboratory and National Laboratory of Flow Cytometry, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua, Mexico
| | - José Pablo Romero-López
- Laboratorio de Inmunología Clínica 1, Instituto Politécnico Nacional de México, Posgrado en Ciencias Quimicobiológicas, Escuela Nacional de Ciencias Biológicas, Ciudad de México, México
| | - Brian de Jesús Bernal-Alferes
- Laboratorio de Inmunología Clínica 1, Instituto Politécnico Nacional de México, Posgrado en Ciencias Quimicobiológicas, Escuela Nacional de Ciencias Biológicas, Ciudad de México, México
| | - César Pacheco-Tena
- Facultad de Medicina y Ciencias Biomédicas, Laboratorio PABIOM, Universidad Autónoma de Chihuahua, Chihuahua, México
- * E-mail:
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16
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Lee SH, Seo D, Lee KH, Park SJ, Park S, Kim H, Kim T, Joo IH, Park JM, Kang YH, Lim GH, Kim DH, Yang JY. Biometabolites of Citrus unshiu Peel Enhance Intestinal Permeability and Alter Gut Commensal Bacteria. Nutrients 2023; 15:nu15020319. [PMID: 36678190 PMCID: PMC9862503 DOI: 10.3390/nu15020319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/02/2023] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Flavanones in Citrus unshiu peel (CUP) have been used as therapeutic agents to reduce intestinal inflammation; however, the anti-inflammatory effects of their biometabolites remain ambiguous. Here, we identified aglycone-type flavanones, such as hesperetin and naringenin, which were more abundant in the bioconversion of the CUP than in the ethanol extracts of the CUP. We found that the bioconversion of the CUP induced the canonical nuclear factor-κB pathway via degradation of IκB in Caco-2 cells. To check the immune suppressive capacity of the aglycones of the CUP in vivo, we orally administered the bioconversion of the CUP (500 mg/kg) to mice for two weeks prior to the 3% dextran sulfate sodium treatment. The CUP-pretreated group showed improved body weight loss, colon length shortage, and intestinal inflammation than the control mice. We also found a significant decrease in the population of lamina propria Th17 cells in the CUP-pretreated group following dextran sodium sulfate (DSS) treatment and an increase in mRNA levels of occludin in CUP-treated Caco-2 cells. Pyrosequencing analysis revealed a decreased abundance of Alistipes putredinis and an increased abundance of Muribaculum intestinale in the feces of the CUP-pretreated mice compared to those of the control mice. Overall, these findings suggest that the pre-administration of CUP biometabolites may inhibit the development of murine colitis by modulating intestinal permeability and the gut microbiome.
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Affiliation(s)
- Se-Hui Lee
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
| | - Dongju Seo
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
| | - Kang-Hee Lee
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
| | - So-Jung Park
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
| | - Sun Park
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
| | - Hyeyun Kim
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
| | - Taekyung Kim
- Department of Biology Education, Pusan National University, Busan 46241, Republic of Korea
| | - In Hwan Joo
- Department of Pathology, College of Korean Medicine, Daejeon University, Daejeon 34520, Republic of Korea
| | - Jong-Min Park
- Department of Pathology, College of Korean Medicine, Daejeon University, Daejeon 34520, Republic of Korea
| | - Yun-Hwan Kang
- Department of Industry Promotion, National Institute for Korean Medicine Development, Geongsan 38540, Republic of Korea
| | - Gah-Hyun Lim
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea
| | - Dong Hee Kim
- Department of Pathology, College of Korean Medicine, Daejeon University, Daejeon 34520, Republic of Korea
| | - Jin-Young Yang
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea
- Correspondence: ; Tel.: +82-51-510-2286; Fax: +82-51-581-2962
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Arias-Borrego A, Selma-Royo M, Collado MC, Abril N, García-Barrera T. Impact of "chemical cocktails" exposure in shaping mice gut microbiota and the role of selenium supplementation combining metallomics, metabolomics, and metataxonomics. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129444. [PMID: 35999733 DOI: 10.1016/j.jhazmat.2022.129444] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/31/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Biological systems are exposed to a complex environment in which pollutants can interact through synergistic or antagonistic mechanisms, but limited information is available on the combined effects. To this end, conventional and antibiotic-treated (Abx) mice models were fed regular rodent or selenium (Se) supplemented diets and exposed to a "chemical cocktail" (CC) including metals and pharmaceuticals. Metallomics, metabolomics, and metataxomics were combined to delve into the impact on gut microbiota, plasma selenoproteome, metabolome, and arsenic metabolization. At the molecular level, Se decreased the concentration of the antioxidant glutathione peroxidase in plasma and increased the arsenic methylation rate, possibly favoring its excretion, but not in the Abx and also plasma metabolomes of Abx, and Abx-Se were not differentiated. Moreover, numerous associations were obtained between plasma selenoproteins and gut microbes. Se-supplementation partially antagonizes the gut microbiota alteration caused by Abx, and slightly by CC, but strongly altered profiles were observed in CC-Abx-Se, suggesting synergistic deleterious effects between pollutants, Abx and Se. Moreover, although CC and Abx changed gut microbiota, several common taxa were enriched in CC-Abx and control mice, indicating possible synergistic effects. Our results suggest a potential beneficial impact of supplementation, but mediated by gut microbes being reversed in their absence.
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Affiliation(s)
- A Arias-Borrego
- Research Center of Natural Resources, Health and the Environment (RENSMA). Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Fuerzas Armadas Ave., 21007 Huelva, Spain; Department of Analytical Chemistry, Faculty of Chemistry, University of Sevilla, 41012 Sevilla, Spain
| | - M Selma-Royo
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Department of Biotechnology, Agustin Escardino 7, 46980 Paterna, Valencia, Spain
| | - M C Collado
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Department of Biotechnology, Agustin Escardino 7, 46980 Paterna, Valencia, Spain
| | - N Abril
- Department of Biochemistry and Molecular Biology, University of Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - T García-Barrera
- Research Center of Natural Resources, Health and the Environment (RENSMA). Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Fuerzas Armadas Ave., 21007 Huelva, Spain.
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18
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Perruzza L, Strati F, Raneri M, Li H, Gargari G, Rezzonico-Jost T, Palatella M, Kwee I, Morone D, Seehusen F, Sonego P, Donati C, Franceschi P, Macpherson AJ, Guglielmetti S, Greiff V, Grassi F. Apyrase-mediated amplification of secretory IgA promotes intestinal homeostasis. Cell Rep 2022; 40:111112. [PMID: 35858559 DOI: 10.1016/j.celrep.2022.111112] [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: 01/11/2022] [Revised: 05/15/2022] [Accepted: 06/28/2022] [Indexed: 11/25/2022] Open
Abstract
Secretory immunoglobulin A (SIgA) interaction with commensal bacteria conditions microbiota composition and function. However, mechanisms regulating reciprocal control of microbiota and SIgA are not defined. Bacteria-derived adenosine triphosphate (ATP) limits T follicular helper (Tfh) cells in the Peyer's patches (PPs) via P2X7 receptor (P2X7R) and thereby SIgA generation. Here we show that hydrolysis of extracellular ATP (eATP) by apyrase results in amplification of the SIgA repertoire. The enhanced breadth of SIgA in mice colonized with apyrase-releasing Escherichia coli influences topographical distribution of bacteria and expression of genes involved in metabolic versus immune functions in the intestinal epithelium. SIgA-mediated conditioning of bacteria and enterocyte function is reflected by differences in nutrient absorption in mice colonized with apyrase-expressing bacteria. Apyrase-induced SIgA improves intestinal homeostasis and attenuates barrier impairment and susceptibility to infection by enteric pathogens in antibiotic-induced dysbiosis. Therefore, amplification of SIgA by apyrase can be leveraged to restore intestinal fitness in dysbiotic conditions.
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Affiliation(s)
- Lisa Perruzza
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Francesco Strati
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Matteo Raneri
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Hai Li
- Maurice Müller Laboratories, Department of Biomedical Research, Universitätsklinik für Viszerale Chirurgie und Medizin, Inselspital, University of Bern, Bern 3010, Switzerland
| | - Giorgio Gargari
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan 20133, Italy
| | - Tanja Rezzonico-Jost
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Martina Palatella
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Ivo Kwee
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Diego Morone
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland
| | - Frauke Seehusen
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich 8057, Switzerland
| | - Paolo Sonego
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN) 38098, Italy
| | - Claudio Donati
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN) 38098, Italy
| | - Pietro Franceschi
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige (TN) 38098, Italy
| | - Andrew J Macpherson
- Maurice Müller Laboratories, Department of Biomedical Research, Universitätsklinik für Viszerale Chirurgie und Medizin, Inselspital, University of Bern, Bern 3010, Switzerland
| | - Simone Guglielmetti
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan 20133, Italy
| | - Victor Greiff
- Department of Immunology and Oslo University Hospital, University of Oslo, Oslo 0372, Norway
| | - Fabio Grassi
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona 6500, Switzerland.
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Chen H, Ye C, Cai B, Zhang F, Wang X, Zhang J, Zhang Z, Guo Y, Yao Q. Berberine inhibits intestinal carcinogenesis by suppressing intestinal pro-inflammatory genes and oncogenic factors through modulating gut microbiota. BMC Cancer 2022; 22:566. [PMID: 35596224 PMCID: PMC9123795 DOI: 10.1186/s12885-022-09635-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 05/04/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The role of Berberine (BBR) in colorectal cancer (CRC) and gut microbiota has begun to appreciate. However, there was no direct evidence confirm that the gut microbiota regulated by BBR could inhibit CRC. This report investigated the effect of stool from BBR treated subjects and its effect on CRC. METHODS A mouse model for CRC was developed using azoxymethane (AOM) and dextran sulfate sodium (DSS). Intestinal tissue from affected mice were used to determine the efficacy of BBR against CRC. Stool samples were collected for the 16s rRNA gene sequencing and fecal microbiota transplantation (FMT). Finally, the mechanism of gut microbiota from BBR treated mice on CRC was explored using immunohistochemistry, RNA-Sequencing, quantitative RT-PCR, and western blot analyses. RESULTS BBR significantly reduced intestinal tumor development. The richness of gut microbiota were notably decreased by BBR. Specifically, the relative abundance of beneficial bacteria (Roseburia, Eubacterium, Ruminococcaceae, and Firmicutes_unclassified) was increased while the level of bacteria (Odoribacter, Muribaculum, Mucispirillum, and Parasutterella) was decreased by BBR treatment. FMT experiment determined that the mice fed with stool from BBR treated AOM/DSS mice demonstrated a relatively lower abundance of macroscopic polyps and a significantly lower expression of β-catenin, and PCNA in intestinal tissue than mice fed with stool from AOM/DSS mice. Mechanistically, intestinal tissue obtained from mice fed with stool from BBR treated AOM/DSS mice demonstrated a decreased expression of inflammatory cytokines including interleukin 1β (IL-1β), tumor necrosis factor-α (TNF-α), C-C motif chemokine 1 (Ccl1), Ccl6, and C-X-C motif ligand (Cxcl9). In addition, the NF-κB expression was greatly suppressed in mice fed with stool from BBR treated AOM/DSS mice. Real-time PCR arrays revealed a down-regulation of genes involved in cell proliferation, angiogenesis, invasiveness, and metastasis in mice fed with stool from BBR treated AOM/DSS mice. CONCLUSIONS Stool obtained from BBR treated AOM/DSS mice was able to increase colon length while simultaneously decreasing the density of macroscopic polyps, cell proliferation, inflammatory modulators and the expression of NF-κB. Therefore, it was concluded that suppression of pro-inflammatory genes and carcinogens factors by modulating gut microbiota was an important pathway for BBR to inhibit tumor growth in conventional mice.
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Affiliation(s)
- Haitao Chen
- Department of Integrated Chinese and Western Medicine, Institute of Basic Medicine and Cancer (IBMC), The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Chinese Academy of Sciences, 310022, Hangzhou, Zhejiang, China
| | - Chenxiao Ye
- Zhejiang Chinese Medical University, 310053, Hangzhou, Zhejiang, China
| | - Biyu Cai
- Zhejiang Chinese Medical University, 310053, Hangzhou, Zhejiang, China
| | - Fan Zhang
- Zhejiang Chinese Medical University, 310053, Hangzhou, Zhejiang, China
| | - Xuanying Wang
- Zhejiang Chinese Medical University, 310053, Hangzhou, Zhejiang, China
| | - Jin Zhang
- Zhejiang Chinese Medical University, 310053, Hangzhou, Zhejiang, China
| | - Zewei Zhang
- Department of Abdominal Surgical Oncology, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), 310022, Hangzhou, Zhejiang, China
| | - Yong Guo
- Department of Oncology, The First Affiliated Hospital of Zhejiang Chinese Medical University, 310003, Hangzhou, Zhejiang, China.
| | - Qinghua Yao
- Department of Integrated Chinese and Western Medicine, Institute of Basic Medicine and Cancer (IBMC), The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Chinese Academy of Sciences, 310022, Hangzhou, Zhejiang, China. .,Key Laboratory of Traditional Chinese Medicine Oncology, Zhejiang Cancer Hospital, 310022, Hangzhou, China. .,Key Laboratory of Head & Neck Cancer Translational Research of Zhejiang Province, 310022, Hangzhou, Zhejiang, China.
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20
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Supplementation with SCFAs Re-Establishes Microbiota Composition and Attenuates Hyperalgesia and Pain in a Mouse Model of NTG-Induced Migraine. Int J Mol Sci 2022; 23:ijms23094847. [PMID: 35563235 PMCID: PMC9100093 DOI: 10.3390/ijms23094847] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 12/29/2022] Open
Abstract
Migraine is a common brain-disorder that affects 15% of the population. Converging evidence shows that migraine is associated with gastrointestinal disorders. However, the mechanisms underlying the interaction between the gut and brain in patients with migraine are not clear. In this study, we evaluated the role of the short-chain fatty acids (SCFAs) as sodium propionate (SP) and sodium butyrate (SB) on microbiota profile and intestinal permeability in a mouse model of migraine induced by nitroglycerine (NTG). The mice were orally administered SB and SP at the dose of 10, 30 and 100 mg/kg, 5 min after NTG intraperitoneal injections. Behavioral tests were used to evaluate migraine-like pain. Histological and molecular analyses were performed on the intestine. The composition of the intestinal microbiota was extracted from frozen fecal samples and sequenced with an Illumina MiSeq System. Our results demonstrated that the SP and SB treatments attenuated hyperalgesia and pain following NTG injection. Moreover, SP and SB reduced histological damage in the intestine and restored intestinal permeability and the intestinal microbiota profile. These results provide corroborating evidence that SB and SP exert a protective effect on central sensitization induced by NTG through a modulation of intestinal microbiota, suggesting the potential application of SCFAs as novel supportive therapies for intestinal disfunction associated with migraine.
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21
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Soriano S, Curry K, Wang Q, Chow E, Treangen TJ, Villapol S. Fecal Microbiota Transplantation Derived from Alzheimer's Disease Mice Worsens Brain Trauma Outcomes in Wild-Type Controls. Int J Mol Sci 2022; 23:4476. [PMID: 35562867 PMCID: PMC9103830 DOI: 10.3390/ijms23094476] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/14/2022] [Accepted: 04/16/2022] [Indexed: 02/04/2023] Open
Abstract
Traumatic brain injury (TBI) causes neuroinflammation and neurodegeneration, both of which increase the risk and accelerate the progression of Alzheimer's disease (AD). The gut microbiome is an essential modulator of the immune system, impacting the brain. AD has been related with reduced diversity and alterations in the community composition of the gut microbiota. This study aimed to determine whether the gut microbiota from AD mice exacerbates neurological deficits after TBI in control mice. We prepared fecal microbiota transplants from 18 to 24 month old 3×Tg-AD (FMT-AD) and from healthy control (FMT-young) mice. FMTs were administered orally to young control C57BL/6 (wild-type, WT) mice after they underwent controlled cortical impact (CCI) injury, as a model of TBI. Then, we characterized the microbiota composition of the fecal samples by full-length 16S rRNA gene sequencing analysis. We collected the blood, brain, and gut tissues for protein and immunohistochemical analysis. Our results showed that FMT-AD administration stimulates a higher relative abundance of the genus Muribaculum and a decrease in Lactobacillus johnsonii compared to FMT-young in WT mice. Furthermore, WT mice exhibited larger lesion, increased activated microglia/macrophages, and reduced motor recovery after FMT-AD compared to FMT-young one day after TBI. In summary, we observed gut microbiota from AD mice to have a detrimental effect and aggravate the neuroinflammatory response and neurological outcomes after TBI in young WT mice.
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Affiliation(s)
- Sirena Soriano
- Department of Neurosurgery and Center for Neuroregeneration, Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, TX 77030, USA; (S.S.); (E.C.)
| | - Kristen Curry
- Department of Computer Science, Rice University, Houston, TX 77005, USA; (K.C.); (Q.W.); (T.J.T.)
| | - Qi Wang
- Department of Computer Science, Rice University, Houston, TX 77005, USA; (K.C.); (Q.W.); (T.J.T.)
| | - Elsbeth Chow
- Department of Neurosurgery and Center for Neuroregeneration, Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, TX 77030, USA; (S.S.); (E.C.)
| | - Todd J. Treangen
- Department of Computer Science, Rice University, Houston, TX 77005, USA; (K.C.); (Q.W.); (T.J.T.)
| | - Sonia Villapol
- Department of Neurosurgery and Center for Neuroregeneration, Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, TX 77030, USA; (S.S.); (E.C.)
- Department of Neuroscience in Neurological Surgery, Weill Cornell Medical College, New York, NY 10065, USA
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22
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Good M, Chu T, Shaw P, Nolan LS, Wrobleski J, Castro C, Gong Q, DeWitt O, Finegold DN, Peters D. Selective hypermethylation is evident in small intestine samples from infants with necrotizing enterocolitis. Clin Epigenetics 2022; 14:49. [PMID: 35410447 PMCID: PMC8996588 DOI: 10.1186/s13148-022-01266-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 03/21/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Necrotizing enterocolitis (NEC) is the most common and lethal gastrointestinal disease affecting preterm infants. NEC develops suddenly and is characterized by gut barrier destruction, an inflammatory response, intestinal necrosis and multi-system organ failure. There is currently no method for early NEC detection, and the pathogenesis of NEC remains unclear. DESIGN To further understand the molecular mechanisms that support NEC, we used solution phase hybridization and next-generation DNA sequencing of bisulfite converted DNA to perform targeted genome-wide analysis of DNA methylation at high read depth. RESULTS We found that ileal samples from surgical NEC infants (n = 5) exist in a broadly hypermethylated state relative to their non-NEC counterparts (n = 9). These trends were not uniform, with hypermethylation being most consistently observed outside CpG islands and promoters. We further identified several biologically interesting gene promoters that displayed differential methylation in NEC and a number of biological pathways that appear dysregulated in NEC. We also found that DNA methylation patterns identified in ileal NEC tissue were correlated with those found and published previously in stool samples from NEC-affected infants. CONCLUSION We confirmed that surgical NEC is associated with broad DNA hypermethylation in the ileum, and this may be detectable in stool samples of affected individuals. Thus, an epigenomic liquid biopsy of stool may have significant potential as a biomarker with respect to the diagnostic/predictive detection of NEC. Our findings, along with recent similar observations in colon, suggest that epigenomic dysregulation is a significant feature of surgical NEC. These findings motivate future studies which will involve the longitudinal screening of samples obtained prior to the onset of NEC. Our long-term goal is the development of novel screening, diagnostic and phenotyping methods for NEC.
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Affiliation(s)
- Misty Good
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, University of North Carolina at Chapel Hill, 101 Manning Drive, Campus Box 7596, Chapel Hill, NC, 27599, USA.
| | - Tianjiao Chu
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA
| | - Patricia Shaw
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA
| | - Lila S Nolan
- Department of Pediatrics, Washington University School of Medicine, St. Louis, USA
| | - Joseph Wrobleski
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA
| | - Carlos Castro
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA
| | - Qingqing Gong
- Department of Pediatrics, Washington University School of Medicine, St. Louis, USA
| | - Olivia DeWitt
- Department of Pediatrics, Washington University School of Medicine, St. Louis, USA
| | - David N Finegold
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, USA
| | - David Peters
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA, 15213, USA.
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, USA.
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA.
- Magee-Womens Research Institute, Pittsburgh, USA.
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23
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Zhang Z, Yao C, Li M, Wang L, Huang W, Chen Q. Prophylactic effects of hyperforin on anhedonia‐like phenotype in chronic restrain stress model: A role of gut microbiota. Lett Appl Microbiol 2022; 75:1103-1110. [DOI: 10.1111/lam.13710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Zheng Zhang
- Nanyang Medical College Nanyang Henan Province 473000 P. R. China
| | - Chuan Yao
- Nanyang first people's Hospital Nanyang Henan Province 473000 P. R. China
| | - Min Li
- Nanyang Medical College Nanyang Henan Province 473000 P. R. China
| | - Li‐chuang Wang
- Nanyang Medical College Nanyang Henan Province 473000 P. R. China
| | - Wei Huang
- Nanyang Medical College Nanyang Henan Province 473000 P. R. China
| | - Qing‐jie Chen
- Hubei Key Laboratory of Diabetes and Angiopathy Medicine Research Institute Xianning Medical College Hubei University of Science and Technology Xianning P. R. China
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24
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Hu Q, Niu Y, Yang Y, Mao Q, Lu Y, Ran H, Zhang H, Li X, Gu H, Su Q. Polydextrose Alleviates Adipose Tissue Inflammation and Modulates the Gut Microbiota in High-Fat Diet-Fed Mice. Front Pharmacol 2022; 12:795483. [PMID: 35185543 PMCID: PMC8848743 DOI: 10.3389/fphar.2021.795483] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/22/2021] [Indexed: 12/13/2022] Open
Abstract
The soluble dietary fiber polydextrose (PDX) is a randomly linked glucose oligomer containing small amounts of sorbitol and citric acid and is widely used in the food industry. However, whether PDX can prevent and treat obesity in high-fat diet (HFD)-fed mice has not been directly investigated, and further studies are needed to better understand the complex interactions among PDX, adipose tissue inflammation and the gut microbiota. In the present study, PDX reduced body weight, fasting blood glucose (FBG), adipose tissue accumulation, adipocyte hypertrophy, serum total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) levels in HFD-fed mice. Moreover, PDX alleviated serum lipopolysaccharide (LPS) levels and macrophage infiltration in epididymal adipose tissue and resulted in macrophage polarization toward the M2 phenotype. Gut microbiota analysis revealed that PDX promoted the growth of beneficial microbes such as Bacteroides, Parabacteroides, Alloprevotella, Muribaculum, Akkermansia, Ruminococcaceae_UCG-014 and UBA1819 in obese mice, which were negatively correlated with subcutaneous fat, epididymal fat, body weight, FBG, serum TC, HDL-C, LDL-C and LPS levels. Our results indicates that PDX can prevent and treat obesity in HFD-fed mice, specifically in alleviating glucolipid metabolism disorders and adipose tissue inflammation, which may be mediated by modulating the structure of the gut microbiota. Therefore, PDX may become a promising nondrug therapy for obesity.
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Affiliation(s)
- Qiuyue Hu
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yixin Niu
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanxia Yang
- Department of Endocrinology, Xinhua Hospital Chongming Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qianyun Mao
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yao Lu
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Ran
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongmei Zhang
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoyong Li
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongxia Gu
- Department of Endocrinology, Xinhua Hospital Chongming Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Su
- Department of Endocrinology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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25
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Chen P, Huang J, Rao L, Zhu W, Yu Y, Xiao F, Yu H, Wu Y, Hu R, Liu X, He Z, Yan Q. Environmental effects of nanoparticles on the ecological succession of gut microbiota across zebrafish development. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150963. [PMID: 34656599 DOI: 10.1016/j.scitotenv.2021.150963] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/03/2021] [Accepted: 10/09/2021] [Indexed: 06/13/2023]
Abstract
The environmental stresses could significantly affect the structure and functions of microbial communities colonized in the gut ecosystem. However, little is known about how engineered nanoparticles (ENPs), which have recently become a common pollutant in the environment, affect the gut microbiota across fish development. Based on the high-throughput sequencing of the 16S rRNA gene amplicon, we explored the ecological succession of gut microbiota in zebrafish exposed to nanoparticles for three months. The nanoparticles used herein including titanium dioxide nanoparticles (nTiO2, 100 μg/L), zinc oxide nanoparticles (nZnO, 100 μg/L), and selenium nanoparticles (nSe, 100 μg/L). Our results showed that nanoparticles exposure reduced the alpha diversity of gut microbiota at 73-90 days post-hatching (dph), but showed no significant effects at 14-36 dph. Moreover, nTiO2 significantly (p < 0.05) altered the composition of the gut microbial communities at 73-90 dph (e.g., decreasing abundance of Cetobacterium and Vibrio). Moreover, we found that homogeneous selection was the major process (16.6-57.8%) governing the community succession of gut microbiota. Also, nanoparticles exposure caused topological alterations to microbial networks and led to increased positive interactions to destabilize the gut microbial community. This study reveals the environmental effects of nanoparticles on the ecological succession of gut microbiota across zebrafish development, which provides novel insights to understand the gut microbial responses to ENPs over the development of aquatic animals.
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Affiliation(s)
- Pubo Chen
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Jie Huang
- Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Liuyu Rao
- Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Wengen Zhu
- Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yuhe Yu
- Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Fanshu Xiao
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China.
| | - Huang Yu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Yongjie Wu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Ruiwen Hu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Xingyu Liu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Zhili He
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China; College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Qingyun Yan
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China.
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Harnessing murine models of Crohn's disease ileitis to advance concepts of pathophysiology and treatment. Mucosal Immunol 2022; 15:10-26. [PMID: 34316007 DOI: 10.1038/s41385-021-00433-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 02/04/2023]
Abstract
Crohn's disease (CD) and ulcerative colitis (UC) are both characterized by chronic inflammation and severe dysfunction of the gastrointestinal tract. These two forms of inflammatory bowel disease (IBD) represent distinct clinical disorders with diverse driving mechanisms; however, this divergence is not reflected in currently approved therapeutics that commonly target general proinflammatory pathways. A compelling need therefore remains to understand factors that differentiate the topology and the distinct clinical manifestations of CD versus UC, in order to develop more effective and specialized therapies. Animal models provide valuable platforms for studying IBD heterogeneity and deciphering disease-specific mechanisms. Both the established and the newly developed ileitis mouse models are characterized by various disease initiating mechanisms and diverse phenotypic outcomes that reflect the complexity of human CD-ileitis. Microbial dysbiosis, destruction of epithelial barrier integrity, immune cell deregulation, as well as the recently described genome instability and stromal cell activation have all been proposed as the triggering factors for the development of ileitis-associated pathology. In this review, we aim to critically evaluate the mechanistic underpinnings of murine models of CD-ileitis, discuss their phenotypic similarities to human disease, and envisage their further exploitation for the development of novel targeted and personalized therapeutics.
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Shaler CR, Parco AA, Elhenawy W, Dourka J, Jury J, Verdu EF, Coombes BK. Psychological stress impairs IL22-driven protective gut mucosal immunity against colonising pathobionts. Nat Commun 2021; 12:6664. [PMID: 34795263 PMCID: PMC8602651 DOI: 10.1038/s41467-021-26992-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 10/28/2021] [Indexed: 12/27/2022] Open
Abstract
Crohn's disease is an inflammatory disease of the gastrointestinal tract characterized by an aberrant response to microbial and environmental triggers. This includes an altered microbiome dominated by Enterobacteriaceae and in particular adherent-invasive E. coli (AIEC). Clinical evidence implicates periods of psychological stress in Crohn's disease exacerbation, and disturbances in the gut microbiome might contribute to the pathogenic mechanism. Here we show that stress-exposed mice develop ileal dysbiosis, dominated by the expansion of Enterobacteriaceae. In an AIEC colonisation model, stress-induced glucocorticoids promote apoptosis of CD45+CD90+ cells that normally produce IL-22, a cytokine that is essential for the maintenance of ileal mucosal barrier integrity. Blockade of glucocorticoid signaling or administration of recombinant IL-22 restores mucosal immunity, prevents ileal dysbiosis, and blocks AIEC expansion. We conclude that psychological stress impairs IL-22-driven protective immunity in the gut, which creates a favorable niche for the expansion of pathobionts that have been implicated in Crohn's disease. Importantly, this work also shows that immunomodulation can counteract the negative effects of psychological stress on gut immunity and hence disease-associated dysbiosis.
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Affiliation(s)
- Christopher R Shaler
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Alexandra A Parco
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Wael Elhenawy
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Jasmeen Dourka
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Jennifer Jury
- Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada
| | - Elena F Verdu
- Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada
| | - Brian K Coombes
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada.
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada.
- Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada.
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Krishna M, Engevik M, Queliza K, Britto S, Shah R, Ruan W, Wang H, Versalovic J, Kellermayer R. Maternal
Lactobacillus reuteri
supplementation shifts the intestinal microbiome in mice and provides protection from experimental colitis in female offspring. FASEB Bioadv 2021; 4:109-120. [PMID: 35141475 PMCID: PMC8814561 DOI: 10.1096/fba.2021-00078] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/01/2021] [Accepted: 10/06/2021] [Indexed: 12/26/2022] Open
Abstract
The purpose of our experiment was to explore how stochastic (inter‐individual variation) gut microbiome composition may link to inflammatory bowel disease (IBD) susceptibility and guide the development of a perinatal preventative probiotic. Dextran sodium sulfate (DSS) was introduced to C57BL/BJ mice to induce acute colitis as a model of IBD. Potentially protective bacteria were identified using a discovery‐validation cohort approach toward stochastic DSS susceptibility. Lactobacilli (two different cocktails of L. reuteri and L. johnsonii strains) or control media were supplemented by mouth to dams prior to delivery and during lactation (i.e., perinatal probiotic). The pups were evaluated for DSS susceptibility at young adulthood. Fecal Lactobacillus was increased in the DSS‐resistant mice in both the discovery and validation cohorts. Maternal supplementation of female offspring with an L. reuteri cocktail (strains 6798‐1, 6798‐jm, and 6798‐cm) induced progressive microbiome separation and protection against colitis by young adulthood. Maternal supplementation of L. reuteri could confer protection against DSS colitis in young adult female mice. This work is the first to exploit stochastic mammalian microbiome variation to guide microbial therapeutic identification. Our findings underscore neonatal microbiome plasticity and set the stage for the potential development of perinatally deliverable protective probiotics against human IBD.
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Affiliation(s)
- Mahesh Krishna
- Johns Hopkins School of Medicine Baltimore Maryland USA
- Section of Pediatric Gastroenterology Baylor College of Medicine Houston Texas USA
| | - Melinda Engevik
- Department of Pathology & Immunology Baylor College of Medicine Houston Texas USA
| | - Karen Queliza
- Pediatric Gastroenterology, Hepatology and Nutrition Memorial Sloan Kettering Cancer Center New York New York USA
| | - Savini Britto
- Section of Pediatric Gastroenterology Baylor College of Medicine Houston Texas USA
| | - Rajesh Shah
- Department of Medicine Baylor Scott and White Austin Texas USA
| | - Wenly Ruan
- Section of Pediatric Gastroenterology Baylor College of Medicine Houston Texas USA
| | - Hongtao Wang
- Section of Pediatric Gastroenterology Baylor College of Medicine Houston Texas USA
| | - James Versalovic
- Department of Pathology & Immunology Baylor College of Medicine Houston Texas USA
| | - Richard Kellermayer
- Section of Pediatric Gastroenterology Baylor College of Medicine Houston Texas USA
- USDA/ARS Children's Nutrition Research Center Texas Children's Hospital Houston Texas USA
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Islam SMS, Ryu HM, Sayeed HM, Byun HO, Jung JY, Kim HA, Suh CH, Sohn S. Eubacterium rectale Attenuates HSV-1 Induced Systemic Inflammation in Mice by Inhibiting CD83. Front Immunol 2021; 12:712312. [PMID: 34531862 PMCID: PMC8438521 DOI: 10.3389/fimmu.2021.712312] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/13/2021] [Indexed: 12/13/2022] Open
Abstract
The purpose of this study was to determine whether administration of the microorganism Eubacterium rectale (E. rectale) could regulate dendritic cell (DC) activation and systemic inflammation in herpes simplex virus type 1-induced Behçet's disease (BD). E. rectale, butyrate-producing bacteria, was administered to BD mice. Peripheral blood leukocytes (PBL) and lymph node cells were isolated and analyzed by flow cytometry. 16S rRNA metagenomic analysis was performed in the feces of mice to determine the differences in the composition of the microbial population between normal and BD mice. Serum cytokine levels were measured by enzyme-linked immunosorbent assay. The frequency of DC activation marker CD83 positive cells was significantly increased in PBL of BD mice. Frequencies of CD83+ cells were also significantly increased in patients with active BD. 16S rRNA metagenomic analysis revealed different gut microbiota composition between normal and BD mice. The administration of E. rectale to BD mice reduced the frequency of CD83+ cells and significantly increased the frequency of NK1.1+ cells with the improvement of symptoms. The co-administration of colchicine and E. rectale also significantly reduced the frequency of CD83+ cells. Differences in gut microbiota were observed between normal mice and BD mice, and the administration of E. rectale downregulated the frequency of CD83, which was associated with BD deterioration. These data indicate that E. rectale could be a new therapeutic adjuvant for BD management.
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Affiliation(s)
- S. M. Shamsul Islam
- Department of Biomedical Science, Ajou University School of Medicine, Suwon, South Korea
| | - Hye-Myung Ryu
- Department of Microbiology, Ajou University School of Medicine, Suwon, South Korea
| | - Hasan M. Sayeed
- Department of Biomedical Science, Ajou University School of Medicine, Suwon, South Korea
| | - Hae-Ok Byun
- Department of Microbiology, Ajou University School of Medicine, Suwon, South Korea
| | - Ju-Yang Jung
- Department of Rheumatology, Ajou University School of Medicine, Suwon, South Korea
| | - Hyoun-Ah Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon, South Korea
| | - Chang-Hee Suh
- Department of Rheumatology, Ajou University School of Medicine, Suwon, South Korea
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Seonghyang Sohn
- Department of Biomedical Science, Ajou University School of Medicine, Suwon, South Korea
- Department of Microbiology, Ajou University School of Medicine, Suwon, South Korea
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Wu Y, You Q, Fei J, Wu J. Changes in the gut microbiota: a possible factor influencing peripheral blood immune indexes in non-obese diabetic mice. Antonie van Leeuwenhoek 2021; 114:1669-1682. [PMID: 34370135 DOI: 10.1007/s10482-021-01632-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 07/23/2021] [Indexed: 12/17/2022]
Abstract
Intestinal flora changes were found in patients and animals with type 1 diabetes (T1D). However, few studies have provided any explicit clues of changes in highly disease related commensal microbiota before disease onset and their relationships with disordered peripheral immune cells. We conducted 16S rRNA microbiota analysis of non-obese diabetic (NOD) mice from weaning to diabetes onset to identify highly disease related microbes and performed Spearman correlation analysis between anomalous flora and peripheral immune cells. We found NOD mice had increased exclusive bacteria and decreased community richness or diversity, besides, with the features of decreased abundance of Bacteroidetes and increased abundance of Firmicutes, Proteobacteria or Deferribacteres and remarkable fluctuations of genus relative abundance. Furthermore, kinds of highly T1D related genus and their strong correlations with peripheral immune cells, especially neutrophils, were discovered. Microbial changes in NOD mice differed from that of ICR mice and highly disease associated microbes have strong correlations with the peripheral neutrophil ratio, which provide evidence that neutrophils are possibly involved in the pathogenesis of T1D.
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Affiliation(s)
- Yiling Wu
- School of Life Science and Technology, China Pharmaceutical University, No.639 Long Mian Street, Jiangning District, Nanjing, 211100, Jiangsu Province, China
| | - Qi You
- School of Life Science and Technology, China Pharmaceutical University, No.639 Long Mian Street, Jiangning District, Nanjing, 211100, Jiangsu Province, China
| | - Jingjin Fei
- School of Life Science and Technology, China Pharmaceutical University, No.639 Long Mian Street, Jiangning District, Nanjing, 211100, Jiangsu Province, China
| | - Jie Wu
- School of Life Science and Technology, China Pharmaceutical University, No.639 Long Mian Street, Jiangning District, Nanjing, 211100, Jiangsu Province, China.
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31
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Chen J, Yi C, Lu C, Han J, Shi Q, Li J, Zhou J, Su X. High DHA tuna oil alleviated cigarette smoking exposure induced lung inflammation via the regulation of gut microbiota and serum metabolites. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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32
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Kienesberger B, Obermüller B, Singer G, Mittl B, Grabherr R, Mayrhofer S, Heinl S, Stadlbauer V, Horvath A, Miekisch W, Fuchs P, Klymiuk I, Till H, Castellani C. (S)-Reutericyclin: Susceptibility Testing and In Vivo Effect on Murine Fecal Microbiome and Volatile Organic Compounds. Int J Mol Sci 2021; 22:6424. [PMID: 34203988 PMCID: PMC8232739 DOI: 10.3390/ijms22126424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 11/17/2022] Open
Abstract
We aimed to assess the in vitro antimicrobial activity and the in vivo effect on the murine fecal microbiome and volatile organic compound (VOC) profile of (S)-reutericyclin. The antimicrobial activity of (S)-reutericyclin was tested against Clostridium difficile, Listeria monocytogenes, Escherichia coli, Enterococcus faecium, Staphylococcus aureus, Staphylococcus (S.) epidermidis, Streptococcus agalactiae, Pseudomonas aeruginosa and Propionibacterium acnes. Reutericyclin or water were gavage fed to male BALBc mice for 7 weeks. Thereafter stool samples underwent 16S based microbiome analysis and VOC analysis by gas chromatography mass spectrometry (GC-MS). (S)-reutericyclin inhibited growth of S. epidermidis only. Oral (S)-reutericyclin treatment caused a trend towards reduced alpha diversity. Beta diversity was significantly influenced by reutericyclin. Linear discriminant analysis Effect Size (LEfSe) analysis showed an increase of Streptococcus and Muribaculum as well as a decrease of butyrate producing Ruminoclostridium, Roseburia and Eubacterium in the reutericyclin group. VOC analysis revealed significant increases of pentane and heptane and decreases of 2,3-butanedione and 2-heptanone in reutericyclin animals. The antimicrobial activity of (S)-reutericyclin differs from reports of (R)-reutericyclin with inhibitory effects on a multitude of Gram-positive bacteria reported in the literature. In vivo (S)-reutericyclin treatment led to a microbiome shift towards dysbiosis and distinct alterations of the fecal VOC profile.
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Affiliation(s)
- Bernhard Kienesberger
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, 8036 Graz, Austria; (B.K.); (G.S.); (B.M.); (H.T.); (C.C.)
| | - Beate Obermüller
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, 8036 Graz, Austria; (B.K.); (G.S.); (B.M.); (H.T.); (C.C.)
| | - Georg Singer
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, 8036 Graz, Austria; (B.K.); (G.S.); (B.M.); (H.T.); (C.C.)
| | - Barbara Mittl
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, 8036 Graz, Austria; (B.K.); (G.S.); (B.M.); (H.T.); (C.C.)
| | - Reingard Grabherr
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, 1190 Vienna, Austria; (R.G.); (S.M.); (S.H.)
| | - Sigrid Mayrhofer
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, 1190 Vienna, Austria; (R.G.); (S.M.); (S.H.)
| | - Stefan Heinl
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, 1190 Vienna, Austria; (R.G.); (S.M.); (S.H.)
| | - Vanessa Stadlbauer
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, 8036 Graz, Austria; (V.S.); (A.H.)
| | - Angela Horvath
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, 8036 Graz, Austria; (V.S.); (A.H.)
- Center of Biomarker Research (CBmed), 8036 Graz, Austria
| | - Wolfram Miekisch
- Experimental Research Center, Department of Anesthesiology and Intensive Care, Rostock University Medical Center, 18057 Rostock, Germany; (W.M.); (P.F.)
| | - Patricia Fuchs
- Experimental Research Center, Department of Anesthesiology and Intensive Care, Rostock University Medical Center, 18057 Rostock, Germany; (W.M.); (P.F.)
| | - Ingeborg Klymiuk
- Gottfried Schatz Research Center, Department of Cell Biology, Histology and Embryology, Medical University of Graz, 8036 Graz, Austria;
| | - Holger Till
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, 8036 Graz, Austria; (B.K.); (G.S.); (B.M.); (H.T.); (C.C.)
| | - Christoph Castellani
- Department of Paediatric and Adolescent Surgery, Medical University of Graz, 8036 Graz, Austria; (B.K.); (G.S.); (B.M.); (H.T.); (C.C.)
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Segers C, Mysara M, Claesen J, Baatout S, Leys N, Lebeer S, Verslegers M, Mastroleo F. Intestinal mucositis precedes dysbiosis in a mouse model for pelvic irradiation. ISME COMMUNICATIONS 2021; 1:24. [PMID: 36737646 PMCID: PMC9723693 DOI: 10.1038/s43705-021-00024-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/12/2021] [Accepted: 05/25/2021] [Indexed: 02/07/2023]
Abstract
Pelvic radiotherapy is known to evoke intestinal mucositis and dysbiosis. Currently, there are no effective therapies available to mitigate these injuries, which is partly due to a lack of insight into the events causing mucositis and dysbiosis. Here, the complex interplay between the murine host and its microbiome following pelvic irradiation was mapped by characterizing intestinal mucositis along with extensive 16S microbial profiling. We demonstrated important morphological and inflammatory implications within one day after exposure, thereby impairing intestinal functionality and inducing translocation of intraluminal bacteria into mesenteric lymph nodes as innovatively quantified by flow cytometry. Concurrent 16S microbial profiling revealed a delayed impact of pelvic irradiation on beta diversity. Analysis of composition of microbiomes identified biomarkers for pelvic irradiation. Among them, members of the families Ruminococcaceae, Lachnospiraceae and Porphyromonadaceae were differentially affected. Altogether, our unprecedented findings showed how pelvic irradiation evoked structural and functional changes in the intestine, which secondarily resulted in a microbiome shift. Therefore, the presented in vivo irradiation-gut-microbiome platform allows further research into the pathobiology of pelvic irradiation-induced intestinal mucositis and resultant dysbiosis, as well as the exploration of mitigating treatments including drugs and food supplements.
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Affiliation(s)
- Charlotte Segers
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Mohamed Mysara
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
| | - Jürgen Claesen
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
- Department of Epidemiology and Data Science, Amsterdam UMC, VU University Amsterdam, Amsterdam, The Netherlands
| | - Sarah Baatout
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
- Department of Biotechnology, University of Ghent, Ghent, Belgium
| | - Natalie Leys
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
| | - Sarah Lebeer
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Mieke Verslegers
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
| | - Felice Mastroleo
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium.
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Inhibitory Effects of Breast Milk-Derived Lactobacillus rhamnosus Probio-M9 on Colitis-Associated Carcinogenesis by Restoration of the Gut Microbiota in a Mouse Model. Nutrients 2021; 13:nu13041143. [PMID: 33808480 PMCID: PMC8065529 DOI: 10.3390/nu13041143] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/24/2021] [Accepted: 03/27/2021] [Indexed: 01/18/2023] Open
Abstract
Chronic inflammation is a risk factor for colorectal cancer, and inflammatory cytokines secreted from inflammatory cells and active oxygen facilitate tumorigenesis. Intestinal bacteria are thought to regulate tumorigenesis. The longer the breastfeeding period, the lower is the risk of inflammatory bowel disease. Here, we investigated preventive effects of the probiotic Lactobacillus rhamnosus M9 (Probio-M9) on colitis-associated tumorigenesis. An inflammatory colorectal tumor model was established using a 6-week-old male C57BL/6NCrSlc mouse, which was intraperitoneally administered with azoxymethane (AOM: 12 mg/kg body weight). On weeks 2 and 4, 2% dextran sulfate sodium (DSS) was administered to mice for 7 days through drinking water. On weeks 8 and 10, Probio-M9 (2 × 109/day) was orally administered for 7 days. Animals were sacrificed at 20 weeks after AOM administration and immunohistochemical staining and Western blotting was performed. The α-diversity of microflora (Shannon index), principal coordinate analysis, and distribution of intestinal bacterium genera and metabolic pathways were compared. The AOM/DSS group showed weight loss, diarrhea, intestinal shortening, increased number of colon tumors, proliferating tumorigenesis, increased inflammation score, fibrosis, increased CD68+, or CD163+ macrophage cells in the subserosal layer of non-tumor areas. Inflammation and tumorigenesis ameliorated after Probio-M9 treatment. Fecal microbial functions were altered by AOM/DSS treatment. Probio-M9 significantly upregulated the fecal microbial diversity and reversed fecal microbial functions. Thus, Probio-M9 could suppress tumor formation in the large intestine by regulating the intestinal environment and ameliorating inflammation, suggesting its therapeutic potential for treatment of inflammation and colitis-associated tumorigenesis.
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35
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Ahmed M, Metwaly A, Haller D. Modeling microbe-host interaction in the pathogenesis of Crohn's disease. Int J Med Microbiol 2021; 311:151489. [PMID: 33676240 DOI: 10.1016/j.ijmm.2021.151489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/19/2021] [Accepted: 02/23/2021] [Indexed: 02/06/2023] Open
Abstract
Alterations in the gut microbiota structure and function are thought to play an important role in the pathogenesis of Crohn's disease (CD). The rapid advancement of high-throughput sequencing technologies led to the identification of microbiome risk signatures associated with distinct disease phenotypes and progressing disease entities. Functional validation of the identified microbiome signatures is essential to understand the underlying mechanisms of microbe-host interactions. Germfree mouse models are available to study the functional role of disease-conditioning complex gut microbial ecosystems (dysbiosis) or pathobionts (single bacteria) in the pathogenesis of CD-like inflammation. Here, we discuss the clinical and mechanistic relevance and limitations of gnotobiotic mouse models in the context of CD. In addition, we will address the role of diet as an essential external factor modulating microbiome changes, potentially underlying disease initiation and development.
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Affiliation(s)
- Mohamed Ahmed
- Technical University of Munich, Chair of Nutrition and Immunology, School of Life Sciences, 85354 Freising, Germany
| | - Amira Metwaly
- Technical University of Munich, Chair of Nutrition and Immunology, School of Life Sciences, 85354 Freising, Germany
| | - Dirk Haller
- Technical University of Munich, Chair of Nutrition and Immunology, School of Life Sciences, 85354 Freising, Germany; Technical University of Munich, ZIEL Institute for Food & Health, Germany.
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Huang K, Yan Y, Chen D, Zhao Y, Dong W, Zeng X, Cao Y. Ascorbic Acid Derivative 2- O-β-d-Glucopyranosyl-l-Ascorbic Acid from the Fruit of Lycium barbarum Modulates Microbiota in the Small Intestine and Colon and Exerts an Immunomodulatory Effect on Cyclophosphamide-Treated BALB/c Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11128-11143. [PMID: 32825805 DOI: 10.1021/acs.jafc.0c04253] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
2-O-β-d-Glucopyranosyl-l-ascorbic acid (AA-2βG) is a natural and stable ascorbic acid derivative isolated from the fruits of Lycium barbarum. In our present study, cyclophosphamide (Cy) was used to make BALB/c mice immunosuppressive and AA-2βG was used to intervene immunosuppressive mice. It was found that Cy treatment resulted in a series of changes on basic immune indexes including a decrease of thymus and spleen indexes and levels of pro-inflammatory cytokines and destruction of leucocyte proportion balance, accompanied with weight loss, reduction in colon length, and changes of hepatic function markers. However, all these changes were reversed in varying degrees by AA-2βG intervention. Notably, AA-2βG could significantly change both mouse colonic and small-intestinal microbiota. The key responsive taxa found in a mouse colon were Muribaculaceae, Ruminococcaceae, Oscillibacter, Rikenella, Helicobacter, Negativibacillus, Alistipes, and Roseburia, and the key responsive taxa found in a mouse small intestine were Muribaculaceae, Anaerotruncus, and Paenibacillus. The results demonstrated that AA-2βG could modulate microbiota in the small intestine and colon and exert an immunomodulatory effect. Further studies should focus on the degradation pathways of AA-2βG and the interaction between AA-2βG and Muribaculaceae.
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Affiliation(s)
- Kaiyin Huang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yamei Yan
- Institute of Wolfberry Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, China
- National Wolfberry Engineering Research Center, Yinchuan 750002, Ningxia, China
| | - Dan Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ya Zhao
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Dong
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoxiong Zeng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Youlong Cao
- Institute of Wolfberry Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, China
- National Wolfberry Engineering Research Center, Yinchuan 750002, Ningxia, China
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Han D, Li Z, Liu T, Yang N, Li Y, He J, Qian M, Kuang Z, Zhang W, Ni C, Guo X. Prebiotics Regulation of Intestinal Microbiota Attenuates Cognitive Dysfunction Induced by Surgery Stimulation in APP/PS1 Mice. Aging Dis 2020; 11:1029-1045. [PMID: 33014520 PMCID: PMC7505279 DOI: 10.14336/ad.2020.0106] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 01/06/2020] [Indexed: 12/15/2022] Open
Abstract
Emerging evidence indicates that the intestinal microbiota could interact with the central nervous system and modulate multiple pathophysiological changes, including the integrity of intestinal barrier and blood-brain barrier, as well as neuroinflammatory response. In the present study, we investigated the potential role of intestinal microbiota in the pathophysiological process of postoperative cognitive dysfunction. Six-month-old APP/PS1 mice were subjected to partial hepatectomy to establish surgery model and exhibited cognitive dysfunction. The expressions of inflammatory mediators increased and tight junction proteins (ZO-1 and Occludin) levels decreased in the intestine and hippocampus. The 16S ribosomal RNA gene sequencing showed altered β diversity and intestinal microbiota richness after surgery, including genus Rodentibacter, Bacteroides, Ruminococcaceae_UCG_014 and Faecalibaculum, as well as family Eggerthellaceae and Muribaculaceae. Furthermore, prebiotics (Xylooligosaccharides, XOS) intervention effectively attenuated surgery-induced cognitive dysfunction and intestinal microbiota alteration, reduced inflammatory responses, and improved the integrity of tight junction barrier in the intestine and hippocampus. In summary, the present study indicates that intestinal microbiota alteration, the related intestinal barrier and blood-brain barrier damage, and inflammatory responses participate the pathophysiological process of postoperative cognitive dysfunction. Prebiotics intervention could be a potential preventative approach.
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Affiliation(s)
- Dengyang Han
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Zhengqian Li
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Taotao Liu
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Ning Yang
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yue Li
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Jindan He
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Min Qian
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Zhongshen Kuang
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Wen Zhang
- 2National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
| | - Cheng Ni
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Xiangyang Guo
- 1Department of Anesthesiology, Peking University Third Hospital, Beijing, China
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Raftery AL, Tsantikos E, Harris NL, Hibbs ML. Links Between Inflammatory Bowel Disease and Chronic Obstructive Pulmonary Disease. Front Immunol 2020; 11:2144. [PMID: 33042125 PMCID: PMC7517908 DOI: 10.3389/fimmu.2020.02144] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/07/2020] [Indexed: 12/14/2022] Open
Abstract
Inflammatory bowel disease (IBD) and chronic obstructive pulmonary disease (COPD) are chronic inflammatory diseases of the gastrointestinal and respiratory tracts, respectively. These mucosal tissues bear commonalities in embryology, structure and physiology. Inherent similarities in immune responses at the two sites, as well as overlapping environmental risk factors, help to explain the increase in prevalence of IBD amongst COPD patients. Over the past decade, a tremendous amount of research has been conducted to define the microbiological makeup of the intestine, known as the intestinal microbiota, and determine its contribution to health and disease. Intestinal microbial dysbiosis is now known to be associated with IBD where it impacts upon intestinal epithelial barrier integrity and leads to augmented immune responses and the perpetuation of chronic inflammation. While much less is known about the lung microbiota, like the intestine, it has its own distinct, diverse microflora, with dysbiosis being reported in respiratory disease settings such as COPD. Recent research has begun to delineate the interaction or crosstalk between the lung and the intestine and how this may influence, or be influenced by, the microbiota. It is now known that microbial products and metabolites can be transferred from the intestine to the lung via the bloodstream, providing a mechanism for communication. While recent studies indicate that intestinal microbiota can influence respiratory health, intestinal dysbiosis in COPD has not yet been described although it is anticipated since factors that lead to dysbiosis are similarly associated with COPD. This review will focus on the gut-lung axis in the context of IBD and COPD, highlighting the role of environmental and genetic factors and the impact of microbial dysbiosis on chronic inflammation in the intestinal tract and lung.
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Affiliation(s)
- April L Raftery
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Evelyn Tsantikos
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Nicola L Harris
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Margaret L Hibbs
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
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Dehydroandrographolide inhibits mastitis by activating autophagy without affecting intestinal flora. Aging (Albany NY) 2020; 12:14050-14065. [PMID: 32702668 PMCID: PMC7425474 DOI: 10.18632/aging.103312] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 04/28/2020] [Indexed: 12/21/2022]
Abstract
Mastitis can seriously damage the physical and mental health of lactating women. The use of antibiotics and anti-inflammatory drugs may damage the flora balance in lactating women. To alleviate mastitis in lactating women and reduce drug-induced damage to the flora, we found that dehydroandrographolide (Deh) has good anti-inflammatory and bacterial balance functions. In vivo, we found that Deh significantly inhibited the expression of MPO, IL6, IL-1β, TNF-α, COX2 and iNOS and reduced pathological damage to the mammary gland. The feces in the control and Deh groups were collected and sequenced for 16S flora. The results showed that Deh did not change the primary intestinal microflora composition of the two groups. In vitro, our study showed that Deh significantly inhibited the expression of IL6, IL-1β and TNF-α in the EpH4-Ev cell line. When an AMPK inhibitor was added, the anti-inflammatory effect of Deh was blocked. To further study the anti-inflammatory mechanism of Deh, we found that Deh significantly promoted autophagy through the phosphorylation of AMPK, Beclin and ULK1. In conclusion, our study found that Deh promoted autophagy and played an anti-inflammatory role by activating the AMPK/Beclin/ULK1 signaling pathway and did not affect intestinal flora.
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The Effects of Prebiotic Supplementation with OMNi-LOGiC ® FIBRE on Fecal Microbiome, Fecal Volatile Organic Compounds, and Gut Permeability in Murine Neuroblastoma-Induced Tumor-Associated Cachexia. Nutrients 2020; 12:nu12072029. [PMID: 32650568 PMCID: PMC7400931 DOI: 10.3390/nu12072029] [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: 06/05/2020] [Revised: 06/26/2020] [Accepted: 07/04/2020] [Indexed: 02/06/2023] Open
Abstract
Malignant diseases can cause tumor-associated cachexia (TAC). Supplementation with prebiotic non-digestible carbohydrates exerts positive metabolic effects in experimental oncologic diseases. The aim of this project was to assess the effect of prebiotic supplementation with OMNi-LOGiC® FIBRE on intestinal microbiome, bacterial metabolism, gut permeability, and inflammation in a murine model of neuroblastoma (NB)-associated TAC. For this study, 2,000,000 NB cells (MHH-NB11) were implanted into athymic mice followed by daily supplementation with water or 200 mg prebiotic oligosaccharide (POS) OMNi-LOGiC® FIBRE (NB-Aqua, n = 12; NB-POS, n = 12). Three animals of each tumor group did not develop NB. The median time of tumor growth (first visibility to euthanasia) was 37 days (IQR 12.5 days) in the NB-Aqua group and 37 days (IQR 36.5 days) in the NB-POS group (p = 0.791). At euthanasia, fecal microbiome and volatile organic compounds (VOCs), gut permeability (fluorescein isothiocyanate-dextran (FITC-dextran), and gut barrier markers were measured. Values were compared to sham animals following injection of culture medium and gavage of either water or OMNi-LOGiC® FIBRE (SH-Aqua, n = 10; SH-POS, n = 10). Alpha diversity did not differ significantly between the groups. Principal coordinate analysis (PCoA) revealed clustering differences between Aqua and POS animals. Both NB and POS supplementation led to taxonomic alterations of the fecal microbiome. Of 49 VOCs, 22 showed significant differences between the groups. NB animals had significantly higher gut permeability than Aqua animals; POS did not ameliorate these changes. The pore and leak pathways of tight junctions did not differ between groups. In conclusion, our results suggest that NB-induced TAC causes increased gut permeability coupled with compositional changes in the fecal microbiome and VOC profile. Prebiotic supplementation with OMNi-LOGiC® FIBRE seemed to induce modifications of the fecal microbiome and VOC profile but did not improve gut permeability.
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41
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Triplett J, Ellis D, Braddock A, Roberts E, Ingram K, Perez E, Short A, Brown D, Hutzley V, Webb C, Soto A, Chan V. Temporal and region-specific effects of sleep fragmentation on gut microbiota and intestinal morphology in Sprague Dawley rats. Gut Microbes 2020; 11:706-720. [PMID: 31924109 PMCID: PMC7524289 DOI: 10.1080/19490976.2019.1701352] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Sleep is a fundamental biological process, that when repeatedly disrupted, can result in severe health consequences. Recent studies suggest that both sleep fragmentation (SF) and dysbiosis of the gut microbiome can lead to metabolic disorders, though the underlying mechanisms are largely unclear. To better understand the consequences of SF, we investigated the effects of acute (6 days) and chronic (6 weeks) SF on rats by examining taxonomic profiles of microbiota in the distal ileum, cecum and proximal colon, as well as assessing structural and functional integrity of the gastrointestinal barrier. We further assayed the impact of SF on a host function by evaluating inflammation and immune response. Both acute and chronic SF induced microbial dysbiosis, more dramatically in the distal ileum (compared to other two regions studied), as noted by significant perturbations in alpha- and beta-diversity; though, specific microbial populations were significantly altered throughout each of the three regions. Furthermore, chronic SF resulted in increased crypt depth in the distal ileum and an increase in the number of villi lining both the cecum and proximal colon. Additional changes were noted with chronic SF, including: decreased microbial adhesion and penetration in the distal ileum and cecum, elevation in serum levels of the cytokine KC/GRO, and depressed levels of corticotropin. Importantly, our data show that perturbations to microbial ecology and intestinal morphology intensify in response to prolonged SF and these changes are habitat specific. Together, these results reveal consequences to gut microbiota homeostasis and host response following acute and chronic SF in rats.
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Affiliation(s)
- Judy Triplett
- Air Force Research Laboratory, Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | - David Ellis
- Air Force Research Laboratory, Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | - Amber Braddock
- Henry M. Jackson Foundation for the Advancement of Military Medicine (HJF), Wright-Patterson AFB, OH, USA
| | - Erin Roberts
- Air Force Research Laboratory, Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | - Katherine Ingram
- Air Force Research Laboratory, Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | - Eric Perez
- Air Force Research Laboratory, Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | - Amanda Short
- Air Force Research Laboratory, Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | - Dominique Brown
- Molecular Mechanisms Branch, Human Centered ISR Division, Airman Systems Directorate, 711 Human Performance Wing, Air Force Research Laboratory (711 HPW/RHXJ), Wright-Patterson AFB, OH, USA
| | - Victoria Hutzley
- Molecular Mechanisms Branch, Human Centered ISR Division, Airman Systems Directorate, 711 Human Performance Wing, Air Force Research Laboratory (711 HPW/RHXJ), Wright-Patterson AFB, OH, USA
| | - Chelsey Webb
- Molecular Mechanisms Branch, Human Centered ISR Division, Airman Systems Directorate, 711 Human Performance Wing, Air Force Research Laboratory (711 HPW/RHXJ), Wright-Patterson AFB, OH, USA
| | - Armando Soto
- Molecular Mechanisms Branch, Human Centered ISR Division, Airman Systems Directorate, 711 Human Performance Wing, Air Force Research Laboratory (711 HPW/RHXJ), Wright-Patterson AFB, OH, USA
| | - Victor Chan
- Molecular Mechanisms Branch, Human Centered ISR Division, Airman Systems Directorate, 711 Human Performance Wing, Air Force Research Laboratory (711 HPW/RHXJ), Wright-Patterson AFB, OH, USA,CONTACT Victor Chan Molecular Mechanisms Branch, Human Centered ISR Division, Airman Systems Directorate, 711 Human Performance Wing, Air Force Research Laboratory (711 HPW/RHXJ), Wright-Patterson AFB, OH, USA
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42
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Lo Sasso G, Phillips BW, Sewer A, Battey JND, Kondylis A, Talikka M, Titz B, Guedj E, Peric D, Bornand D, Dulize R, Merg C, Corciulo M, Ouadi S, Yanuar R, Tung CK, Ivanov NV, Peitsch MC, Hoeng J. The reduction of DSS-induced colitis severity in mice exposed to cigarette smoke is linked to immune modulation and microbial shifts. Sci Rep 2020; 10:3829. [PMID: 32123204 PMCID: PMC7052152 DOI: 10.1038/s41598-020-60175-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 01/24/2020] [Indexed: 12/15/2022] Open
Abstract
Exposure to cigarette smoke (CS) causes detrimental health effects, increasing the risk of cardiovascular, pulmonary diseases and carcinogenesis in exposed individuals. The impact of CS on Inflammatory Bowel Disease (IBD) has been established by a number of epidemiological and clinical studies. In fact, CS is associated with a higher risk of developing Crohn's disease (CD) while inversely correlates with the development, disease risks, and relapse rate of ulcerative colitis (UC). To investigate the effect of CS exposure on experimental colitis, we performed a comprehensive and integrated comparative analysis of colon transcriptome and microbiome in mice exposed to dextran sodium sulfate (DSS) and CS. Colon transcriptome analysis revealed that CS downregulated specific pathways in a concentration-dependent manner, affecting both the inflammatory state and composition of the gut microbiome. Metagenomics analysis demonstrated that CS can modulate DSS-induced dysbiosis of specific bacterial genera, contributing to resolve the inflammation or accelerate recovery. The risks of smoking far outweigh any possible benefit, thus smoking cessation must always be encouraged because of its significant health benefits. However, the inverse association between active smoking and the development of UC cannot be ignored and the present study lays the foundation for investigating potential molecular mechanisms responsible for the attenuation of colitis by certain compounds of tobacco when decoupled from combustion.
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Affiliation(s)
- Giuseppe Lo Sasso
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Blaine W Phillips
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Alain Sewer
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - James N D Battey
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Athanasios Kondylis
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Marja Talikka
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Bjoern Titz
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Dariusz Peric
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - David Bornand
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Remi Dulize
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Celine Merg
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Maica Corciulo
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Sonia Ouadi
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Rendy Yanuar
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Ching Keong Tung
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
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Leigh SJ, Kaakoush NO, Bertoldo MJ, Westbrook RF, Morris MJ. Intermittent cafeteria diet identifies fecal microbiome changes as a predictor of spatial recognition memory impairment in female rats. Transl Psychiatry 2020; 10:36. [PMID: 32066702 PMCID: PMC7026185 DOI: 10.1038/s41398-020-0734-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 11/20/2019] [Accepted: 11/27/2019] [Indexed: 12/12/2022] Open
Abstract
Excessive consumption of diets high in saturated fat and sugar impairs short-term spatial recognition memory in both humans and rodents. Several studies have identified associations between the observed behavioral phenotype and diet-induced changes in adiposity, hippocampal gene expression of inflammatory and blood-brain barrier-related markers, and gut microbiome composition. However, the causal role of such variables in producing cognitive impairments remains unclear. As intermittent cafeteria diet access produces an intermediate phenotype, we contrasted continuous and intermittent diet access to identify specific changes in hippocampal gene expression and microbial species that underlie the cognitive impairment observed in rats fed continuous cafeteria diet. Female adult rats were fed either regular chow, continuous cafeteria diet, or intermittent cafeteria diet cycles (4 days regular chow and 3 days cafeteria) for 7 weeks (12 rats per group). Any cafeteria diet exposure affected metabolic health, hippocampal gene expression, and gut microbiota, but only continuous access impaired short-term spatial recognition memory. Multiple regression identified an operational taxonomic unit, from species Muribaculum intestinale, as a significant predictor of performance in the novel place recognition task. Thus, contrasting intermittent and continuous cafeteria diet exposure allowed us to identify specific changes in microbial species abundance and growth as potential underlying mechanisms relevant to diet-induced cognitive impairment.
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Affiliation(s)
- Sarah-Jane Leigh
- grid.1005.40000 0004 4902 0432School of Medical Sciences, UNSW, Sydney, NSW 2052 Australia
| | - Nadeem O. Kaakoush
- grid.1005.40000 0004 4902 0432School of Medical Sciences, UNSW, Sydney, NSW 2052 Australia
| | - Michael J. Bertoldo
- grid.1005.40000 0004 4902 0432Fertility and Research Centre, School of Women’s and Children’s Health, UNSW, Sydney, NSW 2052 Australia
| | | | - Margaret J. Morris
- grid.1005.40000 0004 4902 0432School of Medical Sciences, UNSW, Sydney, NSW 2052 Australia
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