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Huang P, Zhou Y, Wang S, Qian X, Ren C, Zhou Z. Effects of hydroxychloroquine on the mucosal barrier and gut microbiota during healing of mice colitis. Am J Transl Res 2024; 16:4144-4153. [PMID: 39262712 PMCID: PMC11384370 DOI: 10.62347/ftyj6152] [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: 04/24/2024] [Accepted: 08/14/2024] [Indexed: 09/13/2024]
Abstract
OBJECTIVES The present study aimed to evaluate the impact of hydroxychloroquine (HCQ) on the mucosal barrier and gut microbiota during the healing of mice colitis. METHODS The body weight, colon length, colon Hematoxylin-Eosin (H&E) staining, occult blood in feces and serum inflammatory factor levels were measured to evaluate the function of HCQ on inflammatory process in colitis mice. The Alcian blue staining, immunohistochemistry, immunofluorescence and serum FITC-Dextran assay were performed to assess the intestinal mucosal permeability. And the composition and expression differences of intestinal microorganisms in feces were analyzed with 16S rDNA sequencing for exploration of HCQ impact on gut microbiota in colitis. RESULTS The results showed that the administration of HCQ did not significantly alter the body weight, colon length, or fecal occult blood of the mice. However, HCQ treatment did lead to recovery of the structure and morphology of the intestinal mucosa, increased expression of tight junction proteins (E-cadherin and Occludin), decreased permeability of the intestinal mucosal barrier, increased serum IL-10, and decreased level of tumor necrosis factor-alpha (TNF-α). Additionally, HCQ was found to increase the abundance of Euryarchaeota, Lactobacillus_murinus and Clostridium_fusiformis, while decreasing the abundance of Oscillibacter, uncultured_Odoribacter, Bacterioidetes and Muribaculum. CONCLUSIONS These findings support that HCQ plays a role in the treatment of mice colitis possibly by altering the gut microbiota.
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Affiliation(s)
- Pan Huang
- School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, PR China
| | - Yan Zhou
- School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, PR China
| | - Siyu Wang
- School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, PR China
| | - Xin Qian
- School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, PR China
| | - Caifang Ren
- School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, PR China
| | - Zhengrong Zhou
- School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, PR China
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2
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Luo M, Wang Q, Sun Y, Jiang Y, Wang Q, Gu Y, Hu Z, Chen Q, Xu J, Chen S, Hou T, Feng L. Fasting-mimicking diet remodels gut microbiota and suppresses colorectal cancer progression. NPJ Biofilms Microbiomes 2024; 10:53. [PMID: 38918380 PMCID: PMC11199600 DOI: 10.1038/s41522-024-00520-w] [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: 10/30/2023] [Accepted: 05/28/2024] [Indexed: 06/27/2024] Open
Abstract
The progression of colorectal cancer is closely associated with diet. Fasting-mimicking diet (FMD) is a promising type of dietary intervention that have beneficial effects in the prevention and treatment of various cancers. We investigated the therapeutic effect of 4-day FMD against colorectal cancer in mice through immune cell analysis, microbiota composition analysis and anti-PD-1 treatment. These FMD cycles effectively suppressed colorectal cancer growth, reduced cell proliferation and angiogenesis, increased tumor-infiltration lymphocytes especially CD8+T cells. FMD stimulated protective gut microbiota, especially Lactobacillus. Supplementation of Lactobacillus johnsonii induced similar results as FMD intervention, which also suppressed tumor growth and increased CD45+ and CD8+ T cells. Additionally, FMD synthesizing with anti-PD-1 therapy effectively inhibited CRC progression. These findings suggest that Lactobacillus. johnsonii is necessary for the anticancer process of FMD in CRC. FMD through its effects on both gut microbiota and immune system, effectively suppressed colorectal cancer progression in mouse model.
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Affiliation(s)
- Man Luo
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Qingyi Wang
- Medical School of Zhejiang University, Hangzhou, China
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yong Sun
- Medical School of Zhejiang University, Hangzhou, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Yao Jiang
- Medical School of Zhejiang University, Hangzhou, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Qiwen Wang
- Medical School of Zhejiang University, Hangzhou, China
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yanrou Gu
- Wenzhou Medical University, Wenzhou, China
| | - Zhefang Hu
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Qianyi Chen
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Jilei Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.
| | - Lijun Feng
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.
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Chuandong Z, Hu J, Li J, Wu Y, Wu C, Lai G, Shen H, Wu F, Tao C, Liu S, Zhang W, Shao H. Distribution and roles of Ligilactobacillus murinus in hosts. Microbiol Res 2024; 282:127648. [PMID: 38367479 DOI: 10.1016/j.micres.2024.127648] [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: 08/30/2023] [Revised: 10/26/2023] [Accepted: 02/10/2024] [Indexed: 02/19/2024]
Abstract
Ligilactobacillus murinus, a member of the Ligilactobacillus genus, holds significant potential as a probiotic. While research on Ligilactobacillus murinus has been relatively limited compared to well-studied probiotic lactic acid bacteria such as Limosilactobacillus reuteri and Lactobacillus gasseri, a mounting body of evidence highlights its extensive involvement in host intestinal metabolism and immune activities. Moreover, its abundance exhibits a close correlation with intestinal health. Notably, beyond the intestinal context, Ligilactobacillus murinus is gaining recognition for its contributions to metabolism and regulation in the oral cavity, lungs, and vagina. As such, Ligilactobacillus murinus emerges as a potential probiotic candidate with a pivotal role in supporting host well-being. This review delves into studies elucidating the multifaceted roles of Ligilactobacillus murinus. It also examines its medicinal potential and associated challenges, underscoring the imperative to delve deeper into unraveling the mechanisms of its actions and exploring its health applications.
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Affiliation(s)
- Zhou Chuandong
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Jicong Hu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Jiawen Li
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Yuting Wu
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Chan Wu
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Guanxi Lai
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Han Shen
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Fenglin Wu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Changli Tao
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Song Liu
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Wenfeng Zhang
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China.
| | - Hongwei Shao
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China.
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Dai J, Jiang M, Wang X, Lang T, Wan L, Wang J. Human-derived bacterial strains mitigate colitis via modulating gut microbiota and repairing intestinal barrier function in mice. BMC Microbiol 2024; 24:96. [PMID: 38521930 PMCID: PMC10960398 DOI: 10.1186/s12866-024-03216-5] [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: 07/12/2023] [Accepted: 02/07/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Unbalanced gut microbiota is considered as a pivotal etiological factor in colitis. Nevertheless, the precise influence of the endogenous gut microbiota composition on the therapeutic efficacy of probiotics in colitis remains largely unexplored. RESULTS In this study, we isolated bacteria from fecal samples of a healthy donor and a patient with ulcerative colitis in remission. Subsequently, we identified three bacterial strains that exhibited a notable ability to ameliorate dextran sulfate sodium (DSS)-induced colitis, as evidenced by increased colon length, reduced disease activity index, and improved histological score. Further analysis revealed that each of Pediococcus acidilactici CGMCC NO.17,943, Enterococcus faecium CGMCC NO.17,944 and Escherichia coli CGMCC NO.17,945 significantly attenuated inflammatory responses and restored gut barrier dysfunction in mice. Mechanistically, bacterial 16S rRNA gene sequencing indicated that these three strains partially restored the overall structure of the gut microbiota disrupted by DSS. Specially, they promoted the growth of Faecalibaculum and Lactobacillus murinus, which were positively correlated with gut barrier function, while suppressing Odoribacter, Rikenella, Oscillibacter and Parasutterella, which were related to inflammation. Additionally, these strains modulated the composition of short chain fatty acids (SCFAs) in the cecal content, leading to an increase in acetate and a decrease in butyrate. Furthermore, the expression of metabolites related receptors, such as receptor G Protein-coupled receptor (GPR) 43, were also affected. Notably, the depletion of endogenous gut microbiota using broad-spectrum antibiotics completely abrogated these protective effects. CONCLUSIONS Our findings suggest that selected human-derived bacterial strains alleviate experimental colitis and intestinal barrier dysfunction through mediating resident gut microbiota and their metabolites in mice. This study provides valuable insights into the potential therapeutic application of probiotics in the treatment of colitis.
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Affiliation(s)
- Juanjuan Dai
- Department of Intensive Care Unit, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P.R. China
| | - Mingjie Jiang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P.R. China
| | - Xiaoxin Wang
- Shanghai Key Laboratory of Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Lang
- Shanghai Key Laboratory of Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Leilei Wan
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jingjing Wang
- Shanghai Key Laboratory of Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Pan L, Ma M, Wang Y, Dai W, Fu T, Wang L, Shang Q, Yu G. Polyguluronate alleviates ulcerative colitis by targeting the gut commensal Lactobacillus murinus and its anti-inflammatory metabolites. Int J Biol Macromol 2024; 257:128592. [PMID: 38056745 DOI: 10.1016/j.ijbiomac.2023.128592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 11/22/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
Polyguluronate (PG) is a fermentable polysaccharide from edible algae. The present study was designed to investigate the therapeutic effect of PG on ulcerative colitis (UC) and its underlying mechanisms. Our results suggest that oral intake of PG attenuates UC and improves gut microbiota dysbiosis by promoting the growth of Lactobacillus spp. in dextran sulfate sodium-fed mice. Five different species of Lactobacillus were isolated from the feces of PG-treated mice and L. murinus was identified to have the best anti-colitis effect, suggesting a critical role for L. murinus in mediating the therapeutic effect of PG. Furthermore, PG was degraded potentially by the beta-glucuronidase from L. murinus and adding PG to the culture medium of L. murinus remarkably increased its production of anti-inflammatory metabolites, including itaconic acid, cis-11,14-eicosadienoic acid, and 3-amino-3-(2-chlorophenyl)-propionic acid. Additionally, L. salivarius, a human intestine-derived PG-utilizing species that is closely related to L. murinus, was also demonstrated to have potent anti-colitis effects, suggesting that it is a candidate target of PG in the human gut. Altogether, our study illustrates an unprecedented application of PG in the treatment of UC and establishes the basis for understanding its therapeutic effect from the perspective of L. murinus and its metabolites.
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Affiliation(s)
- Lin Pan
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
| | - Mingfeng Ma
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
| | - Yamin Wang
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
| | - Wei Dai
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
| | - Tianyu Fu
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
| | - Lihao Wang
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China
| | - Qingsen Shang
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China; Qingdao Marine Biomedical Research Institute, Qingdao 266071, China.
| | - Guangli Yu
- Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, China; Qingdao Marine Biomedical Research Institute, Qingdao 266071, China.
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6
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Zhao L, Cunningham CM, Andruska AM, Schimmel K, Ali MK, Kim D, Gu S, Chang JL, Spiekerkoetter E, Nicolls MR. Rat microbial biogeography and age-dependent lactic acid bacteria in healthy lungs. Lab Anim (NY) 2024; 53:43-55. [PMID: 38297075 PMCID: PMC10834367 DOI: 10.1038/s41684-023-01322-x] [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: 11/24/2022] [Accepted: 12/21/2023] [Indexed: 02/02/2024]
Abstract
The laboratory rat emerges as a useful tool for studying the interaction between the host and its microbiome. To advance principles relevant to the human microbiome, we systematically investigated and defined the multitissue microbial biogeography of healthy Fischer 344 rats across their lifespan. Microbial community profiling data were extracted and integrated with host transcriptomic data from the Sequencing Quality Control consortium. Unsupervised machine learning, correlation, taxonomic diversity and abundance analyses were performed to determine and characterize the rat microbial biogeography and identify four intertissue microbial heterogeneity patterns (P1-P4). We found that the 11 body habitats harbored a greater diversity of microbes than previously suspected. Lactic acid bacteria (LAB) abundance progressively declined in lungs from breastfed newborn to adolescence/adult, and was below detectable levels in elderly rats. Bioinformatics analyses indicate that the abundance of LAB may be modulated by the lung-immune axis. The presence and levels of LAB in lungs were further evaluated by PCR in two validation datasets. The lung, testes, thymus, kidney, adrenal and muscle niches were found to have age-dependent alterations in microbial abundance. The 357 microbial signatures were positively correlated with host genes in cell proliferation (P1), DNA damage repair (P2) and DNA transcription (P3). Our study established a link between the metabolic properties of LAB with lung microbiota maturation and development. Breastfeeding and environmental exposure influence microbiome composition and host health and longevity. The inferred rat microbial biogeography and pattern-specific microbial signatures could be useful for microbiome therapeutic approaches to human health and life quality enhancement.
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Affiliation(s)
- Lan Zhao
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA.
- VA Palo Alto Health Care System, Palo Alto, CA, USA.
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA.
| | - Christine M Cunningham
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- VA Palo Alto Health Care System, Palo Alto, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Adam M Andruska
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Katharina Schimmel
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Md Khadem Ali
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Dongeon Kim
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- VA Palo Alto Health Care System, Palo Alto, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Shenbiao Gu
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- VA Palo Alto Health Care System, Palo Alto, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Jason L Chang
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- VA Palo Alto Health Care System, Palo Alto, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Edda Spiekerkoetter
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA
| | - Mark R Nicolls
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford, CA, USA.
- VA Palo Alto Health Care System, Palo Alto, CA, USA.
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford, CA, USA.
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Won MM, Mladenov GD, Raymond SL, Khan FA, Radulescu A. What animal model should I use to study necrotizing enterocolitis? Semin Pediatr Surg 2023; 32:151313. [PMID: 37276781 DOI: 10.1016/j.sempedsurg.2023.151313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Unfortunately, we are all too familiar with the statement: "Necrotizing enterocolitis remains the leading cause of gastrointestinal surgical emergency in preterm neonates". It's been five decades since the first animal models of necrotizing enterocolitis (NEC) were described. There remains much investigative work to be done on identifying various aspects of NEC, ranging from the underlying mechanisms to treatment modalities. Experimental NEC is mainly focused on a rat, mouse, and piglet models. Our aim is to not only highlight the pros and cons of these three main models, but to also present some of the less-used animal models that have contributed to the body of knowledge about NEC. Choosing an appropriate model is essential to conducting effective research and answering the questions asked. As such, this paper reviews some of the variations that come with each model.
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Affiliation(s)
- Mitchell M Won
- School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Georgi D Mladenov
- Division of Pediatric Surgery, Loma Linda University Children's Hospital, Loma Linda, CA, USA
| | - Steven L Raymond
- School of Medicine, Loma Linda University, Loma Linda, CA, USA; Division of Pediatric Surgery, Loma Linda University Children's Hospital, Loma Linda, CA, USA
| | - Faraz A Khan
- School of Medicine, Loma Linda University, Loma Linda, CA, USA; Division of Pediatric Surgery, Loma Linda University Children's Hospital, Loma Linda, CA, USA
| | - Andrei Radulescu
- School of Medicine, Loma Linda University, Loma Linda, CA, USA; Division of Pediatric Surgery, Loma Linda University Children's Hospital, Loma Linda, CA, USA.
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Zhao L, Cunningham CM, Andruska AM, Schimmel K, Ali MK, Kim D, Gu S, Chang JL, Spiekerkoetter E, Nicolls MR. Rat microbial biogeography and age-dependent lactic acid bacteria in healthy lungs. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.19.541527. [PMID: 37293045 PMCID: PMC10245737 DOI: 10.1101/2023.05.19.541527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The laboratory rat emerges as a useful tool for studying the interaction between the host and its microbiome. To advance principles relevant to the human microbiome, we systematically investigated and defined a multi-tissue full lifespan microbial biogeography for healthy Fischer 344 rats. Microbial community profiling data was extracted and integrated with host transcriptomic data from the Sequencing Quality Control (SEQC) consortium. Unsupervised machine learning, Spearman's correlation, taxonomic diversity, and abundance analyses were performed to determine and characterize the rat microbial biogeography and the identification of four inter-tissue microbial heterogeneity patterns (P1-P4). The 11 body habitats harbor a greater diversity of microbes than previously suspected. Lactic acid bacteria (LAB) abundances progressively declined in lungs from breastfeed newborn to adolescence/adult and was below detectable levels in elderly rats. LAB's presence and levels in lungs were further evaluated by PCR in the two validation datasets. The lung, testes, thymus, kidney, adrenal, and muscle niches were found to have age-dependent alterations in microbial abundance. P1 is dominated by lung samples. P2 contains the largest sample size and is enriched for environmental species. Liver and muscle samples were mostly classified into P3. Archaea species were exclusively enriched in P4. The 357 pattern-specific microbial signatures were positively correlated with host genes in cell migration and proliferation (P1), DNA damage repair and synaptic transmissions (P2), as well as DNA transcription and cell cycle in P3. Our study established a link between metabolic properties of LAB with lung microbiota maturation and development. Breastfeeding and environmental exposure influence microbiome composition and host health and longevity. The inferred rat microbial biogeography and pattern-specific microbial signatures would be useful for microbiome therapeutic approaches to human health and good quality of life.
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9
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Zhang X, Zhang Y, He Y, Zhu X, Ai Q, Shi Y. β-glucan protects against necrotizing enterocolitis in mice by inhibiting intestinal inflammation, improving the gut barrier, and modulating gut microbiota. J Transl Med 2023; 21:14. [PMID: 36627673 PMCID: PMC9830848 DOI: 10.1186/s12967-022-03866-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/29/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Necrotizing enterocolitis (NEC) is a devastating gastrointestinal disease with high morbidity and mortality, affecting preterm infants especially those with very low and extremely low birth weight. β-glucan has manifested multiple biological effects including anti-inflammatory, regulation of gut microbiota, and immunomodulatory activities. This study aimed to investigate the effects of β-glucan on NEC. METHODS Neonatal C57BL/6 mice were randomly divided into three groups: Control group, NEC group and β-glucan group. Newborn 3-day-old mice were gavaged with either 1 mg/ml β-glucan or phosphate buffer saline at 0.03 ml/g for 7 consecutive days before NEC induction and a NEC model was established with hypoxia combined with cold exposure and formula feeding. All the pups were killed after 72-h modeling. Hematoxylin-eosin staining was performed to assess the pathological injury to the intestines. The mRNA expression levels of inflammatory factors in intestinal tissues were determined using quantitative real-time PCR. The protein levels of TLR4, NF-κB and tight junction proteins in intestinal tissues were evaluated using western blotting and immunohistochemistry. 16S rRNA sequencing was performed to determine the structure of the gut microbiota. RESULTS β-glucan administration ameliorated intestinal injury of NEC mice; reduced the intestinal expression of TLR4, NF-κB, IL-1β, IL-6, and TNF-α; increased the intestinal expression of IL-10; and improved the expression of ZO-1, Occludin and Claudin-1 within the intestinal barrier. Pre-treatment with β-glucan also increased the proportion of Actinobacteria, Clostridium butyricum, Lactobacillus johnsonii, Lactobacillus murinus, and Lachnospiraceae bacterium mt14 and reduced the proportion of Klebsiella oxytoca g Klebsiella in the NEC model. CONCLUSION β-glucan intervention prevents against NEC in neonatal mice, possibly by suppressing the TLR4-NF-κB signaling pathway, improving intestinal barrier function, and partially regulating intestinal microbiota.
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Affiliation(s)
- Xingdao Zhang
- grid.488412.3Department of Neonatology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China ,grid.488412.3Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Yuni Zhang
- grid.488412.3Department of Neonatology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China ,grid.488412.3Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Yu He
- grid.488412.3Department of Neonatology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China ,grid.488412.3Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Xingwang Zhu
- grid.488412.3Department of Neonatology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China ,grid.488412.3Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Qing Ai
- grid.488412.3Department of Neonatology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China ,grid.488412.3Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Yuan Shi
- grid.488412.3Department of Neonatology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China ,grid.488412.3Chongqing Key Laboratory of Pediatrics, Chongqing, China
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10
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Chapman JA, Stewart CJ. Methodological challenges in neonatal microbiome research. Gut Microbes 2023; 15:2183687. [PMID: 36843005 PMCID: PMC9980642 DOI: 10.1080/19490976.2023.2183687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 02/16/2023] [Indexed: 02/28/2023] Open
Abstract
Following microbial colonization at birth, the gut microbiome plays a vital role in the healthy development of human neonates and impacts both health and disease in later life. Understanding the development of the neonatal gut microbiome and how it interacts with the neonatal host are therefore important areas of study. However, research within this field must address a range of specific challenges that impact the design and implementation of research methods. If not considered ahead of time, these challenges have the potential to introduce biases into studies, negatively affecting the relevance, reproducibility, and impact of any findings. This review outlines the nature of these challenges and points to current and future solutions, as outlined in the literature, to assist researchers in the early stages of study design.
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Affiliation(s)
- Jonathan A Chapman
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Christopher J Stewart
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
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11
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Zhao Y, Li Z, Zhao L, Wang J, Wang F, Zhang Q, Wang X, Sang Y, Zhan J, He J, Li N, Kang X, Chen J, Wang R. Two novel lactic acid bacteria, Limosilactobacillus fermentum MN-LF23 and Lactobacillus gasseri MN-LG80, inhibited Helicobacter pylori infection in C57BL/6 mice. Food Funct 2022; 13:11061-11069. [PMID: 36197065 DOI: 10.1039/d2fo02034c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
Helicobacter pylori (H. pylori) is one of the most prevalent pathogens globally, and long-term infection causes various gastrointestinal diseases such as gastritis and even cancer. In the present study, we screened dozens of lactic acid bacteria for the efficacy to inhibit H. pylori growth in vitro, and tested the therapeutic effects of candidate strains in vivo. The results showed that Limosilactobacillus fermentum MN-LF23 (LF23) and Lactobacillus gasseri MN-LG80 (LG80) significantly reduced the abundance of Helicobacter by 90% and 83% in the infected mice, respectively, and decreased the levels of serum urease and H. pylori-specific IgG. Both bacterial strains tended to ameliorate H. pylori infection-induced gastric mucosa damage and lymphocyte infiltration, and reduced levels of serum inflammatory cytokines such as TNF-α, IL-1β, and IL-6. In addition, their culture supernatants also showed a therapeutic effect, as efficient as the bacterial cells. Furthermore, both strains significantly regulated gastric microbiota profile, and their supernatants restored the diversity of gastric microbiota. LF23 increased the abundance of Lactobacillus murinus and reduced the abundance of Desulfovibrio, whereas LG80 increased the abundance of Lactobacillus reuteri and reduced the abundance of Bilophila. Both LF23 and LG80 enriched beneficial commensals such as Faecalibaculum rodentium, and reduced detrimental bacteria such as H. pylori and Lachnoclostridium. In conclusion, we identified two novel lactic acid bacteria L. fermentum MN-LF23 and L. gasseri MN-LG80 that can remarkably inhibit H. pylori infection.
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Affiliation(s)
- Yuyang Zhao
- College of Food Science and Nutritional Engineering, Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, China Agricultural University, Beijing 100083, China
| | - Zhipeng Li
- R&D Center, Inner Mongolia Mengniu Dairy (Group) Co. Ltd., Huhhot, 011500, Inner Mongolia, China.
- Shanghai Mengniu Biotechnology R&D Co., Ltd., 201210, Shanghai, China
| | - Liang Zhao
- College of Food Science and Nutritional Engineering, Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, China Agricultural University, Beijing 100083, China
| | - Jian Wang
- College of Food Science and Nutritional Engineering, Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, China Agricultural University, Beijing 100083, China
| | - Fan Wang
- R&D Center, Inner Mongolia Mengniu Dairy (Group) Co. Ltd., Huhhot, 011500, Inner Mongolia, China.
- Shanghai Mengniu Biotechnology R&D Co., Ltd., 201210, Shanghai, China
| | - Qi Zhang
- College of Food Science and Nutritional Engineering, Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, China Agricultural University, Beijing 100083, China
| | - Xiaoyu Wang
- College of Food Science and Nutritional Engineering, Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, China Agricultural University, Beijing 100083, China
| | - Yue Sang
- Hebei Engineering Research Center of Animal Product, Sanhe 065200, China
| | - Jing Zhan
- Department of Nutrition and Health, China Agricultural University, Beijing 100190, China.
| | - Jingjing He
- Department of Nutrition and Health, China Agricultural University, Beijing 100190, China.
| | - Ning Li
- R&D Center, Inner Mongolia Mengniu Dairy (Group) Co. Ltd., Huhhot, 011500, Inner Mongolia, China.
| | - Xiaohong Kang
- R&D Center, Inner Mongolia Mengniu Dairy (Group) Co. Ltd., Huhhot, 011500, Inner Mongolia, China.
- Shanghai Mengniu Biotechnology R&D Co., Ltd., 201210, Shanghai, China
| | - Jianguo Chen
- R&D Center, Inner Mongolia Mengniu Dairy (Group) Co. Ltd., Huhhot, 011500, Inner Mongolia, China.
- Shanghai Mengniu Biotechnology R&D Co., Ltd., 201210, Shanghai, China
| | - Ran Wang
- Department of Nutrition and Health, China Agricultural University, Beijing 100190, China.
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12
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Ying C, Siao YS, Chen WJ, Chen YT, Chen SL, Chen YL, Hsu JT. Host species and habitats shape the bacterial community of gut microbiota of three non-human primates: Siamangs, white-handed gibbons, and Bornean orangutans. Front Microbiol 2022; 13:920190. [PMID: 36051771 PMCID: PMC9424820 DOI: 10.3389/fmicb.2022.920190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
The gut microbiome is essential for a host to digest food, maintain health, and adapt to environments. Bacterial communities of gut microbiota are influenced by diverse factors including host physiology and the environment. Many non-human primates (NHPs), which are physiologically close to humans, are in danger of extinction. In this study, the community structure of the gut microbiota in three NHPs: siamangs (Symphalangus syndactylus, Ss), Bornean orangutans (Pongo pygmaeus, Pp), and white-handed gibbons (Hylobates lar, Hl)—housed at the largest Zoo in Taiwan were analyzed. Pp and Ss were housed in the Asian tropical rainforest area, while Hl was housed in two separate areas, the Asian tropical rainforest area and the conservation area. Bacterial community diversity of Ss, indicated by the Shannon index, was significantly higher compared with that of Hl and Pp, while the richness (Chao 1) and observed operational taxonomic units (OTUs) were similar across the three species of NHPs. Host species was the dominant factor shaping the gut microbial community structure. Beta-diversity analysis including non-metric multidimensional scaling (NMDS) and unweighted pair group method with arithmetic mean (UPGMA) suggested gut bacterial communities of Hl housed in the conservation area were closely related to each other, while the bacterial communities of Hl in the rainforest area were dispersedly positioned. Further analysis revealed significantly higher abundances of Lactobacillus fermentum, L. murinus, and an unclassified species of Lactobacillus, and a lower abundance of Escherichia-Shigella in Hl from the conservation area relative to the rainforest area. The ratio of Lactobacillus to Escherichia-Shigella was 489.35 and 0.013 in Hl inhabiting the conservation and rainforest areas, respectively. High abundances of Lactobacillus and Bifidobacterium and a high ratio of Lactobacillus to Escherichia-Shigella were also observed in one siamang with notable longevity of 53 years. Data from the study reveal that host species acted as the fundamental driving factor in modulating the community structure of gut microbiota, but that habitats also acted as key determinants within species. The presence and high abundance of probiotics, such as Bifidobacterium and Lactobacillus, provide potential indicators for future diet and habitat optimization for NHPs, especially in zoological settings.
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Affiliation(s)
- Chingwen Ying
- Department of Microbiology, Soochow University, Taipei, Taiwan
- *Correspondence: Chingwen Ying
| | - You-Shun Siao
- Department of Microbiology, Soochow University, Taipei, Taiwan
| | - Wun-Jing Chen
- Department of Microbiology, Soochow University, Taipei, Taiwan
| | | | | | - Yi-Lung Chen
- Department of Microbiology, Soochow University, Taipei, Taiwan
| | - Jih-Tay Hsu
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
- Jih-Tay Hsu
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13
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Xie Y, Guan W, Zhao Y, Yan S, Guo K, Chen S, Hu X, Shi H, Li J. Deficiency of migration inhibitory factor influences the gut microbiota of C57BL/6 mice infected with Plasmodium berghei ANKA. Front Microbiol 2022; 13:978644. [PMID: 36033889 PMCID: PMC9412183 DOI: 10.3389/fmicb.2022.978644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 07/25/2022] [Indexed: 12/02/2022] Open
Abstract
Cerebral malaria (CM), as one of the most common complications in severe malaria, has threatened millions of individuals’ neurological health and even their lives. Macrophage migration inhibitory factor (MIF), a pleiotropic proinflammatory factor in humans, seems to be a risk factor for death in patients with CM, but its functional mechanism remains unclear. To verify whether affecting the intestinal microbes of the host was one of the mechanisms by which MIF regulates CM, C57BL/6 mice, including WT + PbA, MIF-KO + PbA and their uninfected controls, were sent for 16S rRNA-based sequencing targeting the V4 region of the intestinal microbiota through the Illumina MiSeq platform. The results showed that OTU clustering, alpha and beta diversity in the four groups involved had evident variation. The relative abundance at different taxonomic levels, especially the dominant intestinal flora, was obviously changed. The LEfSe analysis screened out several biomarkers, including significantly reduced Ligilactobacillus (Lactobacillus murinus) in WPbA mice compared to the WT group and Akkermansia (Akkermansia_muciniphila) in KPbA mice compared to the WPbA group. For MIF KO groups, mice infected with PbA or uninfected showed significant enrichment of producers of short-chain fatty acids, including Dubosiella and Faecalibaculum (Faecalibaculum rodentium) in KPbA, and Lachnospiraceae_NK4A136_group and Firmicutes_bacterium_M10-2 in KO. This study not only further proved the gut microbiota changes in C57BL/6 mice caused by PbA infection, but also found that MIF deletion directly affected the changes in the gut microbiota of C57BL/6 mice before and after PbA infection. This finding reveals a potential mechanism by which MIF regulates CM. Combining MIF with potential microbial biomarkers will provide a promising idea to develop combined drugs for improving CM in the future.
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14
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Yang Z, Liu X, Wu Y, Peng J, Wei H. Effect of the Microbiome on Intestinal Innate Immune Development in Early Life and the Potential Strategy of Early Intervention. Front Immunol 2022; 13:936300. [PMID: 35928828 PMCID: PMC9344006 DOI: 10.3389/fimmu.2022.936300] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/23/2022] [Indexed: 12/15/2022] Open
Abstract
Early life is a vital period for mammals to be colonized with the microbiome, which profoundly influences the development of the intestinal immune function. For neonates to resist pathogen infection and avoid gastrointestinal illness, the intestinal innate immune system is critical. Thus, this review summarizes the development of the intestinal microbiome and the intestinal innate immune barrier, including the intestinal epithelium and immune cells from the fetal to the weaning period. Moreover, the impact of the intestinal microbiome on innate immune development and the two main way of early-life intervention including probiotics and fecal microbiota transplantation (FMT) also are discussed in this review. We hope to highlight the crosstalk between early microbial colonization and intestinal innate immunity development and offer some information for early intervention.
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Affiliation(s)
- Zhipeng Yang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiangchen Liu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yanting Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
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15
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Maier I, Ruegger PM, Deutschmann J, Helbich TH, Pietschmann P, Schiestl RH, Borneman J. Particle Radiation Side-Effects: Intestinal Microbiota Composition Shapes Interferon-γ-Induced Osteo-Immunogenicity. Radiat Res 2022; 197:184-192. [PMID: 35130347 DOI: 10.1667/rade-21-00065.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 11/09/2021] [Indexed: 07/25/2024]
Abstract
Microbiota can both negatively and positively impact radiation-induced bone loss. Our prior research showed that compared to mice with conventional gut microbiota (CM), mice with restricted gut microbiota (RM) reduced inflammatory tumor necrosis factor (TNF) in bone marrow, interleukin (IL)-17 in blood, and chemokine (C-C motif) ligand 20 (CCL20) in bone marrow under anti-IL-17 treatment. We showed that Muribaculum intestinale was more abundant in intestinal epithelial cells (IECs) from the small intestine of female RM mice and positively associated with augmented skeletal bone structure. Female C57BL/6J pun RM mice, which were injected with anti-IL-17 antibody one day before exposure to 1.5 Gy 28Si ions of 850 MeV/u, showed high trabecular numbers in tibiae at 6 weeks postirradiation. Irradiated CM mice were investigated for lower interferon-γ and IL-17 levels in the small intestine than RM mice. IL-17 blockage resulted in bacterial indicator phylotypes being different between both microbiota groups before and after irradiation. Analysis of the fecal bacteria were performed in relation to bone quality and body weight, showing reduced tibia cortical thickness in irradiated CM mice (-15%) vs. irradiated RM mice (-9.2%). Correlation analyses identified relationships among trabecular bone parameters (TRI-BV/TV, Tb.N, Tb.Th, Tb.Sp) and Bacteroides massiliensis, Muribaculum sp. and Prevotella denticola. Turicibacter sp. was found directly correlated with trabecular separation in anti-IL-17 treated mice, whereas an unidentified Bacteroidetes correlated with trabecular thickness in anti-IL-17 neutralized and radiation-exposed mice. We demonstrated radiation-induced osteolytic damage to correlate with bacterial indicator phylotypes of the intestinal microbiota composition, and these relationships were determined from the previously discovered dose-dependent particle radiation effects on cell proliferation in bone tissue. New translational approaches were designed to investigate dynamic changes of gut microbiota in correlation with conditions of treatment and disease as well as mechanisms of systemic side-effects in radiotherapy.
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Affiliation(s)
- Irene Maier
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California
| | - Paul M Ruegger
- Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, California
| | - Julia Deutschmann
- Department for Radiologic Technology, University of Applied Sciences Wiener Neustadt for Business and Engineering Ltd., Lower Austria, Austria
| | - Thomas H Helbich
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Peter Pietschmann
- Institute of Pathophysiology and Allergy Research, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
| | - Robert H Schiestl
- Departments of Pathology and Environmental Health Sciences, University of California, Los Angeles, Los Angeles, California
| | - James Borneman
- Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, California
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16
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Shin SH, Shin JS, Kim EK, Kim HS. Capillary partial pressure of carbon dioxide for predicting rehospitalization in preterm infants under noninvasive respiratory support with severe bronchopulmonary dysplasia. Pediatr Pulmonol 2021; 56:3863-3869. [PMID: 34547833 DOI: 10.1002/ppul.25672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/07/2021] [Accepted: 09/10/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND The severity of bronchopulmonary dysplasia (BPD) is an important predictor of prognosis in preterm infants. However, the severity of BPD was determined mainly by the degree of oxygen supplementation and mode of respiratory support. OBJECTIVES This retrospective study aimed to examine the role of partial pressure of carbon dioxide (pCO2 ) in predicting rehospitalization among preterm infants with severe BPD without invasive ventilation at 36 weeks' postmenstrual age (PMA). METHODS We assessed preterm infants aged <32 gestational weeks with severe BPD who were receiving noninvasive respiratory support at 36 weeks' PMA. Patients were compared after stratifying them according to the history of rehospitalization owing to respiratory infection before a corrected age (CA) of 1 year and pCO2 measured by capillary blood gas analysis at 36 weeks' PMA. RESULTS Among 54 infants who had severe BPD with noninvasive respiratory support at 36 weeks' PMA, 16 (29.6%) experienced rehospitalization due to respiratory problems. At 36 weeks' PMA, the amount of oxygen supplementation (0.30 vs. 0.28, p = 0.021) and pCO2 (62.1 vs. 53.6 mmHg, p = 0.006) were higher in the rehospitalization group than in the no rehospitalization group. Multivariate logistic analysis findings indicated that pCO2 ≥ 57.4 mmHg was the only factor associated with rehospitalization (adjusted odds ratio: 8.017, 95% confidence interval 1.239-51.859). CONCLUSION High pCO2 during noninvasive respiratory support at 36 weeks' PMA in severe BPD was associated with rehospitalization. Consideration of the degree of impairment in ventilatory capacity may improve the prediction of later respiratory outcomes in infants with BPD.
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Affiliation(s)
- Seung Han Shin
- Department of Pediatrics, Seoul National University, College of Medicine, Seoul, Republic of Korea.,Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
| | - Jae-Suk Shin
- Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
| | - Ee-Kyung Kim
- Department of Pediatrics, Seoul National University, College of Medicine, Seoul, Republic of Korea.,Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
| | - Han-Suk Kim
- Department of Pediatrics, Seoul National University, College of Medicine, Seoul, Republic of Korea.,Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
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17
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Abokor AA, McDaniel GH, Golonka RM, Campbell C, Brahmandam S, Yeoh BS, Joe B, Vijay-Kumar M, Saha P. Immunoglobulin A, an Active Liaison for Host-Microbiota Homeostasis. Microorganisms 2021; 9:2117. [PMID: 34683438 PMCID: PMC8539215 DOI: 10.3390/microorganisms9102117] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/01/2021] [Accepted: 10/05/2021] [Indexed: 12/12/2022] Open
Abstract
Mucosal surfaces in the gastrointestinal tract are continually exposed to native, commensal antigens and susceptible to foreign, infectious antigens. Immunoglobulin A (IgA) provides dual humoral responses that create a symbiotic environment for the resident gut microbiota and prevent the invasion of enteric pathogens. This review features recent immunological and microbial studies that elucidate the underlying IgA and microbiota-dependent mechanisms for mutualism at physiological conditions. IgA derailment and concurrent microbiota instability in pathological diseases are also discussed in detail. Highlights of this review underscore that the source of IgA and its structural form can dictate microbiota reactivity to sustain a diverse niche where both host and bacteria benefit. Other important studies emphasize IgA insufficiency can result in the bloom of opportunistic pathogens that encroach the intestinal epithelia and disseminate into circulation. The continual growth of knowledge in these subjects can lead to the development of therapeutics targeting IgA and/or the microbiota to treat life threatening diseases.
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Affiliation(s)
- Ahmed A. Abokor
- Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA; (A.A.A.); (R.M.G.); (B.S.Y.); (B.J.); (M.V.-K.)
| | - Grant H. McDaniel
- College of Medicine, University of Toledo, Toledo, OH 43614, USA; (G.H.M.); (C.C.); (S.B.)
| | - Rachel M. Golonka
- Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA; (A.A.A.); (R.M.G.); (B.S.Y.); (B.J.); (M.V.-K.)
| | - Connor Campbell
- College of Medicine, University of Toledo, Toledo, OH 43614, USA; (G.H.M.); (C.C.); (S.B.)
| | - Sreya Brahmandam
- College of Medicine, University of Toledo, Toledo, OH 43614, USA; (G.H.M.); (C.C.); (S.B.)
| | - Beng San Yeoh
- Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA; (A.A.A.); (R.M.G.); (B.S.Y.); (B.J.); (M.V.-K.)
| | - Bina Joe
- Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA; (A.A.A.); (R.M.G.); (B.S.Y.); (B.J.); (M.V.-K.)
| | - Matam Vijay-Kumar
- Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA; (A.A.A.); (R.M.G.); (B.S.Y.); (B.J.); (M.V.-K.)
| | - Piu Saha
- Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA; (A.A.A.); (R.M.G.); (B.S.Y.); (B.J.); (M.V.-K.)
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18
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Tanigawa T, Watanabe T, Higashimori A, Shimada S, Kitamura H, Kuzumoto T, Nadatani Y, Otani K, Fukunaga S, Hosomi S, Tanaka F, Kamata N, Nagami Y, Taira K, Shiba M, Suda W, Hattori M, Fujiwara Y. Rebamipide ameliorates indomethacin-induced small intestinal damage and proton pump inhibitor-induced exacerbation of this damage by modulation of small intestinal microbiota. PLoS One 2021; 16:e0245995. [PMID: 33507971 PMCID: PMC7842908 DOI: 10.1371/journal.pone.0245995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 01/11/2021] [Indexed: 02/07/2023] Open
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) induce small intestinal damage. It has been reported that rebamipide, a mucoprotective drug, exerts a protective effect against NSAID-induced small intestinal damage; however, the underlying mechanism remains unknown. In this study, we investigated the significance of the small intestinal microbiota in the protective effect of rebamipide against indomethacin-induced small intestinal damage in mice. A comprehensive analysis of the 16S rRNA gene sequencing revealed an alteration in the composition of the small intestinal microbiota at the species level, modulated by the administration of rebamipide and omeprazole. The transplantation of the small intestinal microbiota of the mice treated with rebamipide suppressed the indomethacin-induced small intestinal damage. Omeprazole, a proton pump inhibitor, exacerbated the indomethacin-induced small intestinal damage, which was accompanied by the alteration of the small intestinal microbiota. We found that the transplantation of the small intestinal microbiota of the rebamipide-treated mice ameliorated indomethacin-induced small intestinal damage and the omeprazole-induced exacerbation of the damage. These results suggest that rebamipide exerts a protective effect against NSAID-induced small intestinal damage via the modulation of the small intestinal microbiota, and that its ameliorating effect extends also to the exacerbation of NSAID-induced small intestinal damage by proton pump inhibitors.
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Affiliation(s)
- Tetsuya Tanigawa
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Department of Gastroenterology, Osaka City Juso Hospital, Osaka, Japan
- * E-mail:
| | - Toshio Watanabe
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Akira Higashimori
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Sunao Shimada
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Department of Gastroenterology, Osaka City Juso Hospital, Osaka, Japan
| | - Hiroyuki Kitamura
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Takuya Kuzumoto
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yuji Nadatani
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Koji Otani
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Shusei Fukunaga
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Shuhei Hosomi
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Fumio Tanaka
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Noriko Kamata
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yasuaki Nagami
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Koichi Taira
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masatsugu Shiba
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Wataru Suda
- Laboratory for Microbiome Sciences, Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan
| | - Masahira Hattori
- Laboratory for Microbiome Sciences, Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan
| | - Yasuhiro Fujiwara
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
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19
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Yildiz S, Pereira Bonifacio Lopes JP, Bergé M, González-Ruiz V, Baud D, Kloehn J, Boal-Carvalho I, Schaeren OP, Schotsaert M, Hathaway LJ, Rudaz S, Viollier PH, Hapfelmeier S, Francois P, Schmolke M. Respiratory tissue-associated commensal bacteria offer therapeutic potential against pneumococcal colonization. eLife 2020; 9:53581. [PMID: 33287959 PMCID: PMC7723408 DOI: 10.7554/elife.53581] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 11/18/2020] [Indexed: 12/16/2022] Open
Abstract
Under eubiotic conditions commensal microbes are known to provide a competitive barrier against invading bacterial pathogens in the intestinal tract, on the skin or on the vaginal mucosa. Here, we evaluate the role of lung microbiota in Pneumococcus colonization of the lungs. In eubiosis, the lungs of mice were dominantly colonized by Lactobacillus murinus. Differential analysis of 16S rRNA gene sequencing or L. murinus-specific qPCR of DNA from total organ homogenates vs.broncho alveolar lavages implicated tight association of these bacteria with the host tissue. Pure L. murinus conditioned culture medium inhibited growth and reduced the extension of pneumococcal chains. Growth inhibition in vitro was likely dependent on L. murinus-produced lactic acid, since pH neutralization of the conditioned medium aborted the antibacterial effect. Finally, we demonstrate that L. murinus provides a barrier against pneumococcal colonization in a respiratory dysbiosis model after an influenza A virus infection, when added therapeutically.
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Affiliation(s)
- Soner Yildiz
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | | | - Matthieu Bergé
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Víctor González-Ruiz
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland.,Swiss Centre for Applied Human Toxicology, Basel, Switzerland
| | - Damian Baud
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Joachim Kloehn
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Inês Boal-Carvalho
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Olivier P Schaeren
- Institute for Infectious Disease (IFIK), University of Bern, Bern, Switzerland.,Graduate School GCB, University of Bern, Bern, Switzerland
| | - Michael Schotsaert
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Lucy J Hathaway
- Institute for Infectious Disease (IFIK), University of Bern, Bern, Switzerland
| | - Serge Rudaz
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland.,Swiss Centre for Applied Human Toxicology, Basel, Switzerland
| | - Patrick H Viollier
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | | | - Patrice Francois
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Mirco Schmolke
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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20
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Boscaini S, Cabrera‐Rubio R, Nychyk O, Roger Speakman J, Francis Cryan J, David Cotter P, Nilaweera KN. Age- and duration-dependent effects of whey protein on high-fat diet-induced changes in body weight, lipid metabolism, and gut microbiota in mice. Physiol Rep 2020; 8:e14523. [PMID: 32748559 PMCID: PMC7399378 DOI: 10.14814/phy2.14523] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/01/2020] [Accepted: 07/03/2020] [Indexed: 02/07/2023] Open
Abstract
Bovine whey protein has been demonstrated to exert a positive effect on energy balance, lipid metabolism, and nutrient absorption. Additionally, it affects gut microbiota configuration. Thus, whey protein is considered as good dietary candidate to prevent or ameliorate metabolic diseases, such as obesity. However, the relationship that links energy balance, metabolism, and intestinal microbial population mediated by whey protein intake remains poorly understood. In this study, we investigated the beneficial effects attributed to whey protein in the context of high-fat diet (HFD) in mice at two different ages, with short or longer durations of whey protein supplementation. Here, a 5-week dietary intervention with HFD in combination with either whey protein isolate (WPI) or the control nonwhey milk protein casein (CAS) was performed using 5-week or 10-week-old C57BL/6J mice. Notably, the younger mice had no prior history of ingestion of WPI, while older mice did. 5-week-old HFD-WPI-fed mice showed a decrease in weight gain and changes in the expression of genes within the epidydimal white adipose tissue including those encoding leptin, inflammatory marker CD68, fasting-induced adipose factor FIAF and enzymes involved in fatty acids catabolism, relative to HFD-CAS-fed mice. Differences in β-diversity and higher proportions of Lactobacillus murinus, and related functions, were evident within the gut microbiota of HFD-WPI mice. However, none of these changes were observed in mice that started the HFD dietary intervention at 10-weeks-old, with an extended period of WPI supplementation. These results suggest that the effect of whey protein on mouse body weight, adipose tissue, and intestinal parameters depends on diet duration and stage of life during which the diet is provided. In some instances, WPI influences gut microbiota composition and functional potential, which might orchestrate observed metabolic and physiological modifications.
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Affiliation(s)
- Serena Boscaini
- Food Biosciences DepartmentTeagasc Food Research Centre, MooreparkFermoyIreland
- APC Microbiome IrelandUniversity College CorkCorkIreland
- Department of Anatomy and NeuroscienceUniversity College CorkCorkIreland
| | - Raul Cabrera‐Rubio
- Food Biosciences DepartmentTeagasc Food Research Centre, MooreparkFermoyIreland
- APC Microbiome IrelandUniversity College CorkCorkIreland
| | - Oleksandr Nychyk
- Food Biosciences DepartmentTeagasc Food Research Centre, MooreparkFermoyIreland
| | - John Roger Speakman
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- Institute of Biological and Environmental SciencesUniversity of AberdeenAberdeenScotland
| | - John Francis Cryan
- APC Microbiome IrelandUniversity College CorkCorkIreland
- Department of Anatomy and NeuroscienceUniversity College CorkCorkIreland
| | - Paul David Cotter
- Food Biosciences DepartmentTeagasc Food Research Centre, MooreparkFermoyIreland
- APC Microbiome IrelandUniversity College CorkCorkIreland
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21
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Fukunaga M, Kuda T, Xia Y, Nakamura S, Takahashi H, Kimura B. Detection and isolation of the typical gut indigenous bacteria from ddY mice fed a casein-beef tallow-based or egg yolk-based diet. J Food Biochem 2020; 44:e13246. [PMID: 32462679 DOI: 10.1111/jfbc.13246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/27/2020] [Accepted: 03/21/2020] [Indexed: 12/16/2022]
Abstract
The effects of whole egg on the cecal microbiome of ddY mice has been reported. To investigate the existence of susceptible indigenous bacteria (SIB) to egg yolks (EY), mice were fed a diet containing either 20% (w/w) milk casein and 17% beef tallow (CT) or 12% milk casein and 27% EY for 14 days, and then, the cecal microbiome was analyzed by 16S rRNA (V4) amplicon sequencing. To isolate the typical species in each diet group, culture-dependent viable bacterial counts were determined on Blood Liver (BL) and Gifu Anaerobic Medium (GAM) agar plates. The amplicon sequencing analysis revealed typical CT-SIB, such as Lachnospiraceae-like bacteria, and EY-SIB, such as Allobaculum-, Lactobacillus murinus-, and Bacteroides vulgatus-like bacteria. Two of the detected SIB species, L. murinus- and B. vulgatus-like bacteria, were successfully isolated from the BL and GAM agar plates and defined using a 16S rDNA BLAST search. PRACTICAL APPLICATIONS: The SIB defined in the CT and EY groups might have some effects on the nutritional and functional chemical compounds in the milk casein, beef tallow, and/or EY. Analysis of its functional properties of the isolates might develop the new and unique probiotic strains.
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Affiliation(s)
- Mayu Fukunaga
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Takashi Kuda
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Yumeng Xia
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Saori Nakamura
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Hajime Takahashi
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Bon Kimura
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
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22
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Yuan T, Wang J, Chen L, Shan J, Di L. Lactobacillus murinus Improved the Bioavailability of Orally Administered Glycyrrhizic Acid in Rats. Front Microbiol 2020; 11:597. [PMID: 32390962 PMCID: PMC7193032 DOI: 10.3389/fmicb.2020.00597] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 03/18/2020] [Indexed: 12/22/2022] Open
Abstract
Intestinal microbiota has been extensively studied in the context of host health benefit, and it has recently become clear that the gut microbiota influences drug pharmacokinetics and correspondingly efficacy. Intestinal microbiota dysbiosis is closely related with liver cirrhosis, especially the depletion of Lactobacillus. Therefore, the bioavailability of orally administered glycyrrhizic acid (GL) was speculated to be influenced under a pathological state. In the present study, L. murinus was isolated and screened for GL bioconversion capacity in vitro. Compared with Lactobacillus rhamnosus and Lactobacillus acidophilus, L. murinus was chosen for further investigation because it has the highest biotransformation rate. Our results showed that L. murinus could significantly improve the translocation of GL on Caco-2 cell models. Meanwhile, L. murinus was observed to have the ability to bind with the surface of Caco-2 cells and prominently downregulate the transporter gene expression level of multidrug resistance gene 1 (MDR1) and multidrug resistance protein 2 (MRP2), which were involved in the efflux of drugs. Furthermore, L. murinus was selected to be orally administred into rats in healthy and liver cirrhosis groups by a daily gavage protocol. Our data highlighted that supplements of L. murinus significantly improved the bioavailability of orally administered GL in rats, especially under a pathological condition, which may provide a novel strategy for improving the clinical therapeutic effect of liver protective drugs.
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Affiliation(s)
- Tianjie Yuan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jin Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Letian Chen
- Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jinjun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing University of Chinese Medicine, Nanjing, China
| | - Liuqing Di
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Engineering Research Centre for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
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23
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Delaplain PT, Bell BA, Wang J, Isani M, Zhang E, Gayer CP, Grishin AV, Ford HR. Effects of artificially introduced Enterococcus faecalis strains in experimental necrotizing enterocolitis. PLoS One 2019; 14:e0216762. [PMID: 31675374 PMCID: PMC6824573 DOI: 10.1371/journal.pone.0216762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 10/20/2019] [Indexed: 01/07/2023] Open
Abstract
Enterococcus faecalis is a ubiquitous intestinal symbiont and common early colonizer of the neonatal gut. Although colonization with E. faecalis has been previously associated with decreased pathology of necrotizing enterocolitis (NEC), these bacteria have been also implicated as opportunistic pathogens. Here we characterized 21 strains of E. faecalis, naturally occurring in 4-day-old rats, for potentially pathogenic properties and ability to colonize the neonatal gut. The strains differed in hemolysis, gelatin liquefaction, antibiotic resistance, biofilm formation, and ability to activate the pro-inflammatory transcription factor NF-κB in cultured enterocytes. Only 3 strains, BB70, 224, and BB24 appreciably colonized the neonatal intestine on day 4 after artificial introduction with the first feeding. The best colonizer, strain BB70, effectively displaced E. faecalis of maternal origin. Whereas BB70 and BB24 significantly increased NEC pathology, strain 224 significantly protected from NEC. Our results show that different strains of E. faecalis may be pathogenic or protective in experimental NEC.
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Affiliation(s)
- Patrick T. Delaplain
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Brandon A. Bell
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
| | - Jin Wang
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
| | - Mubina Isani
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Emily Zhang
- Shady Side Academy, Pittsburgh, PA, United States of America
| | - Christopher P. Gayer
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Anatoly V. Grishin
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
- * E-mail:
| | - Henri R. Ford
- Division of Pediatric Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, United States of America
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
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24
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Lebovitz Y, Theus MH. Molecular Phenotyping and Genomic Characterization of a Novel Neuroactive Bacterium Strain, Lactobacillus murinus HU-1. Front Pharmacol 2019; 10:1162. [PMID: 31636567 PMCID: PMC6787272 DOI: 10.3389/fphar.2019.01162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/10/2019] [Indexed: 12/15/2022] Open
Affiliation(s)
- Yeonwoo Lebovitz
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA, United States
| | - Michelle H Theus
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA, United States.,Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Blacksburg, VA, United States.,School of Neuroscience, Virginia Tech, Blacksburg, VA, United States.,Center for Regenerative Medicine, VA-MD College of Veterinary Medicine, Blacksburg, VA, United States
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25
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Bering SB. Human Milk Oligosaccharides to Prevent Gut Dysfunction and Necrotizing Enterocolitis in Preterm Neonates. Nutrients 2018; 10:nu10101461. [PMID: 30297668 PMCID: PMC6213229 DOI: 10.3390/nu10101461] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/04/2018] [Accepted: 10/05/2018] [Indexed: 12/25/2022] Open
Abstract
This review focuses on the evidence for health benefits of human milk oligosaccharides (HMOs) for preterm infants to stimulate gut adaptation and reduce the incidence of necrotizing enterocolitis (NEC) in early life. The health benefits of breastfeeding are partly explained by the abundant HMOs that serve as prebiotics and immunomodulators. Gut immaturity in preterm infants leads to difficulties in tolerating enteral feeding and bacterial colonization and a high sensitivity to NEC, particularly when breast milk is insufficient. Due to the immaturity of the preterm infants, their response to HMOs could be different from that in term infants. The concentration of HMOs in human milk is highly variable and there is no evidence to support a specifically adapted high concentration in preterm milk. Further, the gut microbiota is not only different but also highly variable after preterm birth. Studies in pigs as models for preterm infants indicate that HMO supplementation to formula does not mature the gut or prevent NEC during the first weeks after preterm birth and the effects may depend on a certain stage of gut maturity. Supplemented HMOs may become more important for gut protection in the preterm infants when the gut has reached a more mature phase.
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Affiliation(s)
- Stine Brandt Bering
- Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1958 Frederiksberg C, Denmark.
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