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Costa Silva A, Pina-Vaz T, Morgado A, Martins-Silva C, Antunes-Lopes T, Alturas Silva J. The Role of the Urobiome in Kidney Transplantation: A Systematic Review. Transplant Direct 2024; 10:e1643. [PMID: 38769976 PMCID: PMC11104728 DOI: 10.1097/txd.0000000000001643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 02/29/2024] [Indexed: 05/22/2024] Open
Abstract
Background The urinary microbiome, also known as the urobiome, was traditionally considered sterile. However, emerging evidence suggests its presence in the urinary tract. Urobiome dysbiosis has been associated with various urologic conditions, making it a topic of interest also in kidney transplantation. This systematic review examines the evidence of urobiome changes in kidney transplant recipients (KTRs). Methods Systematic literature searches in the PubMed and SCOPUS databases. Results Of the 770 articles identified, 8 met the inclusion criteria. The urobiome showed reduced diversity in KTRs compared with healthy controls and patients on dialysis. Proteobacteria enrichment was associated with graft stability or spontaneous tolerance in KTRs without immunological events. Kidney interstitial fibrosis and tubular atrophy were associated with changes in resident urinary microbes and increased pathogenic bacteria. Additionally, KTRs with chronic allograft dysfunction had a higher prevalence of Corynebacterium. Conclusions The review highlights the importance of studying the urobiome in KTRs and its potential impact on transplant outcomes. The field remains largely unexplored, and further research is needed to establish consistent study designs and objectives. Future studies could lead to biomarker discovery, personalized therapies, and improved outcomes and graft survival in KTRs.
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Affiliation(s)
- Alberto Costa Silva
- Urology Department, University Hospital Center of São João, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - Teresa Pina-Vaz
- Urology Department, University Hospital Center of São João, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - Afonso Morgado
- Urology Department, University Hospital Center of São João, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - Carlos Martins-Silva
- Urology Department, University Hospital Center of São João, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - Tiago Antunes-Lopes
- Urology Department, University Hospital Center of São João, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - João Alturas Silva
- Urology Department, University Hospital Center of São João, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
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Shang L, Yang F, Wei Y, Dai Z, Chen Q, Zeng X, Qiao S, Yu H. Multi-Omics Analysis Reveals the Gut Microbiota Characteristics of Diarrheal Piglets Treated with Gentamicin. Antibiotics (Basel) 2023; 12:1349. [PMID: 37760646 PMCID: PMC10525804 DOI: 10.3390/antibiotics12091349] [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: 07/03/2023] [Revised: 08/03/2023] [Accepted: 08/17/2023] [Indexed: 09/29/2023] Open
Abstract
The involvement of alterations in gut microbiota composition due to the use of antibiotics has been widely observed. However, a clear picture of the influences of gentamicin, which is employed for the treatment of bacterial diarrhea in animal production, are largely unknown. Here, we addressed this problem using piglet models susceptible to enterotoxigenic Escherichia coli (ETEC) F4, which were treated with gentamicin. Gentamicin significantly alleviated diarrhea and intestinal injury. Through 16s RNS sequencing, it was found that gentamicin increased species richness but decreased community evenness. Additionally, clear clustering was observed between the gentamicin-treated group and the other groups. More importantly, with the establishment of a completely different microbial structure, a novel metabolite composition profile was formed. KEGG database annotation revealed that arachidonic acid metabolism and vancomycin resistance were the most significantly downregulated and upregulated pathways after gentamicin treatment, respectively. Meanwhile, we identified seven possible targets of gentamicin closely related to these two functional pathways through a comprehensive analysis. Taken together, these findings demonstrate that gentamicin therapy for diarrhea is associated with the downregulation of arachidonic acid metabolism. During this process, intestinal microbiota dysbiosis is induced, leading to increased levels of the vancomycin resistance pathway. An improved understanding of the roles of these processes will advance the conception and realization of new therapeutic and preventive strategies.
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Affiliation(s)
- Lijun Shang
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Fengjuan Yang
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Yushu Wei
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai’an 271000, China;
| | - Ziqi Dai
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Qingyun Chen
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Haitao Yu
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China; (L.S.); (F.Y.); (Z.D.); (Q.C.); (X.Z.); (S.Q.)
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
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3
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Ge SX, Li TF, Ren LL, Zong SX. Host-plant adaptation in xylophagous insect-microbiome systems: Contributionsof longicorns and gut symbionts revealed by parallel metatranscriptome. iScience 2023; 26:106680. [PMID: 37182102 PMCID: PMC10173737 DOI: 10.1016/j.isci.2023.106680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/16/2023] [Accepted: 04/12/2023] [Indexed: 05/16/2023] Open
Abstract
Adaptation to host plants is of great significance in the ecology of xylophagous insects. The specific adaptation to woody tissues is made possible through microbial symbionts. We investigated the potential roles of detoxification, lignocellulose degradation, and nutrient supplementation of Monochamus saltuarius and its gut symbionts in host plant adaptation using metatranscriptome. The gut microbial community structure of M. saltuarius that fed on the two plant species were found to be different. Plant compound detoxification and lignocellulose degradation genes have been identified in both beetles and gut symbionts. Most differentially expressed genes associated with host plant adaptations were up-regulated in larvae fed on the less suitable host (Pinus tabuliformis) compared to larvae fed on the suitable host (Pinus koraiensis). Our findings indicated that M. saltuarius and its gut microbes respond to plant secondary substances through systematic transcriptome responses, allowing them to adapt to unsuitable host plants.
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Affiliation(s)
- Si-Xun Ge
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, P. R.China
| | - Tian-Feng Li
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, P. R.China
| | - Li-Li Ren
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, P. R.China
- IFOPE, Sino-French Joint Laboratory for Invasive Forest Pests in Eurasia, Beijing Forestry University and INRAE URZF, Beijing 100083, P. R.China
- Corresponding author
| | - Shi-Xiang Zong
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, P. R.China
- IFOPE, Sino-French Joint Laboratory for Invasive Forest Pests in Eurasia, Beijing Forestry University and INRAE URZF, Beijing 100083, P. R.China
- Corresponding author
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Sisakht AK, Malekan M, Ghobadinezhad F, Firouzabadi SNM, Jafari A, Mirazimi SMA, Abadi B, Shafabakhsh R, Mirzaei H. Cellular Conversations in Glioblastoma Progression, Diagnosis and Treatment. Cell Mol Neurobiol 2023; 43:585-603. [PMID: 35411434 DOI: 10.1007/s10571-022-01212-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 03/07/2022] [Indexed: 12/22/2022]
Abstract
Glioblastoma (GBM) is the most frequent malignancy among primary brain tumors in adults and one of the worst 5-year survival rates (< 7%) among all human cancers. Till now, treatments that target particular cell or intracellular metabolism have not improved patients' survival. GBM recruits healthy brain cells and subverts their processes to create a microenvironment that contributes to supporting tumor progression. This microenvironment encompasses a complex network in which malignant cells interact with each other and with normal and immune cells to promote tumor proliferation, angiogenesis, metastasis, immune suppression, and treatment resistance. Communication can be direct via cell-to-cell contact, mainly through adhesion molecules, tunneling nanotubes, gap junctions, or indirect by conventional paracrine signaling by cytokine, neurotransmitter, and extracellular vesicles. Understanding these communication routes could open up new avenues for the treatment of this lethal tumor. Hence, therapeutic approaches based on glioma cells` communication have recently drawn attention. This review summarizes recent findings on the crosstalk between glioblastoma cells and their tumor microenvironment, and the impact of this conversation on glioblastoma progression. We also discuss the mechanism of communication of glioma cells and their importance as therapeutic targets and diagnostic and prognostic biomarkers. Overall, understanding the biological mechanism of specific interactions in the tumor microenvironment may help in predicting patient prognosis and developing novel therapeutic strategies to target GBM.
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Affiliation(s)
- Ali Karimi Sisakht
- Brain Cancer Research Core (BCRC), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Malekan
- Brain Cancer Research Core (BCRC), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Student Research Committee, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Farbod Ghobadinezhad
- Brain Cancer Research Core (BCRC), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Student Research Committee, Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.,USERN Office, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Seyedeh Negar Mousavi Firouzabadi
- Brain Cancer Research Core (BCRC), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Ameneh Jafari
- Advanced Therapy Medicinal Product (ATMP) Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.,Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Ali Mirazimi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.,Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Banafshe Abadi
- Brain Cancer Research Core (BCRC), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran.
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Yadav A, Pandey R. Viral infectious diseases severity: co-presence of transcriptionally active microbes (TAMs) can play an integral role for disease severity. Front Immunol 2022; 13:1056036. [PMID: 36532032 PMCID: PMC9755851 DOI: 10.3389/fimmu.2022.1056036] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/21/2022] [Indexed: 12/04/2022] Open
Abstract
Humans have been challenged by infectious diseases for all of their recorded history, and are continually being affected even today. Next-generation sequencing (NGS) has enabled identification of, i) culture independent microbes, ii) emerging disease-causing pathogens, and iii) understanding of the genome architecture. This, in turn, has highlighted that pathogen/s are not a monolith, and thereby allowing for the differentiation of the wide-ranging disease symptoms, albeit infected by a primary pathogen. The conventional 'one disease - one pathogen' paradigm has been positively revisited by considering limited yet important evidence of the co-presence of multiple transcriptionally active microbes (TAMs), potential pathogens, in various infectious diseases, including the COVID-19 pandemic. The ubiquitous microbiota presence inside humans gives reason to hypothesize that the microbiome, especially TAMs, contributes to disease etiology. Herein, we discuss current evidence and inferences on the co-infecting microbes particularly in the diseases caused by the RNA viruses - Influenza, Dengue, and the SARS-CoV-2. We have highlighted that the specific alterations in the microbial taxonomic abundances (dysbiosis) is functionally connected to the exposure of primary infecting pathogen/s. The microbial presence is intertwined with the differential host immune response modulating differential disease trajectories. The microbiota-host interactions have been shown to modulate the host immune responses to Influenza and SARS-CoV-2 infection, wherein the active commensal microbes are involved in the generation of virus-specific CD4 and CD8 T-cells following the influenza virus infection. Furthermore, COVID-19 dysbiosis causes an increase in inflammatory cytokines such as IL-6, TNF-α, and IL-1β, which might be one of the important predisposing factors for severe infection. Through this article, we aim to provide a comprehensive view of functional microbiomes that can have a significant regulatory impact on predicting disease severity (mild, moderate and severe), as well as clinical outcome (survival and mortality). This can offer fresh perspectives on the novel microbial biomarkers for stratifying patients for severe disease symptoms, disease prevention and augmenting treatment regimens.
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Affiliation(s)
- Aanchal Yadav
- Division of Immunology and Infectious Disease Biology, INtegrative GENomics of HOst-PathogEn (INGEN-HOPE) laboratory, CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Rajesh Pandey
- Division of Immunology and Infectious Disease Biology, INtegrative GENomics of HOst-PathogEn (INGEN-HOPE) laboratory, CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India,*Correspondence: Rajesh Pandey, ;
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6
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Ampatzoglou A, Gruszecka‐Kosowska A, Aguilera‐Gómez M. Microbiota analysis for risk assessment of xenobiotics: toxicomicrobiomics, incorporating the gut microbiome in the risk assessment of xenobiotics and identifying beneficial components for One Health. EFSA J 2022; 20:e200915. [PMID: 36531267 PMCID: PMC9749437 DOI: 10.2903/j.efsa.2022.e200915] [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] [Indexed: 12/23/2022] Open
Abstract
This work explores three areas of relevance to the gut microbiome in the context of One Health; the incorporation of the microbiome in food safety risk assessment of xenobiotics; the identification and application of beneficial microbial components to various areas under One Health, and specifically, in the context of antimicrobial resistance. We conclude that, although challenging, focusing on the microbiota resilience, function and active components, are critical for advancing the incorporation of the gut microbiome in the risk assessment of xenobiotics. Moreover, research technologies, such as toxicomicrobiomics, culturomics and genomics, especially in combination, have revealed that the human microbiota may be a promising source of beneficial taxa or other components, with the potential to metabolise and biodegrade xenobiotics. These may have possible applications in several health areas, including in animals or plants for detoxification or in the environment for bioremediation. This approach would be of particular interest for antimicrobials, with the potential to ameliorate antimicrobial resistance development. Finally, we propose that the concept of resistance to xenobiotics in the context of the gut microbiome may deserve further investigation in the pursuit of holistically elucidating their involvement in the balance between health and disease.
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Affiliation(s)
- Antonios Ampatzoglou
- "José Mataix Verdú" Institute of Nutrition and Food TechnologyUniversity of Granada (INYTA‐UGR)GranadaSpain
| | | | - Margarita Aguilera‐Gómez
- "José Mataix Verdú" Institute of Nutrition and Food TechnologyUniversity of Granada (INYTA‐UGR)GranadaSpain
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7
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Wang M, Bai Z, Liu S, Liu Y, Wang Z, Zhou G, Gong X, Jiang Y, Sui Z. Accurate quantification of total bacteria in raw milk by flow cytometry using membrane potential as a key viability parameter. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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8
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Ampatzoglou A, Gruszecka-Kosowska A, Torres-Sánchez A, López-Moreno A, Cerk K, Ortiz P, Monteoliva-Sánchez M, Aguilera M. Incorporating the Gut Microbiome in the Risk Assessment of Xenobiotics and Identifying Beneficial Components for One Health. Front Microbiol 2022; 13:872583. [PMID: 35602014 PMCID: PMC9116292 DOI: 10.3389/fmicb.2022.872583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/31/2022] [Indexed: 12/12/2022] Open
Abstract
Three areas of relevance to the gut microbiome in the context of One Health were explored; the incorporation of the microbiome in food safety risk assessment of xenobiotics; the identification and application of beneficial microbial components to various areas under One Health, and; specifically, in the context of antimicrobial resistance. Although challenging, focusing on the microbiota resilience, function and active components is critical for advancing the incorporation of microbiome data in the risk assessment of xenobiotics. Moreover, the human microbiota may be a promising source of beneficial components, with the potential to metabolize xenobiotics. These may have possible applications in several areas, e.g., in animals or plants for detoxification or in the environment for biodegradation. This approach would be of particular interest for antimicrobials, with the potential to ameliorate antimicrobial resistance development. Finally, the concept of resistance to xenobiotics in the context of the gut microbiome may deserve further investigation.
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Affiliation(s)
- Antonis Ampatzoglou
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
| | - Agnieszka Gruszecka-Kosowska
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
- Department of Environmental Protection, Faculty of Geology, Geophysics, and Environmental Protection, AGH University of Science and Technology, Kraków, Poland
| | - Alfonso Torres-Sánchez
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
| | - Ana López-Moreno
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
- IBS: Instituto de Investigación Biosanitaria ibs., Granada, Spain
| | - Klara Cerk
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
| | - Pilar Ortiz
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
| | - Mercedes Monteoliva-Sánchez
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
| | - Margarita Aguilera
- Department of Microbiology, Faculty of Pharmacy, University of Granada (UGR), Granada, Spain
- Centre of Biomedical Research, Institute of Nutrition and Food Technology “José Mataix” (INYTA), UGR, Granada, Spain
- IBS: Instituto de Investigación Biosanitaria ibs., Granada, Spain
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Pereira AC, Tenreiro A, Cunha MV. When FLOW-FISH met FACS: Combining multiparametric, dynamic approaches for microbial single-cell research in the total environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150682. [PMID: 34600998 DOI: 10.1016/j.scitotenv.2021.150682] [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: 08/14/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
In environmental microbiology, the ability to assess, in a high-throughput way, single-cells within microbial communities is key to understand their heterogeneity. Fluorescence in situ hybridization (FISH) uses fluorescently labeled oligonucleotide probes to detect, identify, and quantify single cells of specific taxonomic groups. The combination of Flow Cytometry (FLOW) with FISH (FLOW-FISH) enables high-throughput quantification of complex whole cell populations, which when associated with fluorescence-activated cell sorting (FACS) enables sorting of target microorganisms. These sorted cells may be investigated in many ways, for instance opening new avenues for cytomics at a single-cell scale. In this review, an overview of FISH and FLOW methodologies is provided, addressing conventional methods, signal amplification approaches, common fluorophores for cell physiology parameters evaluation, and model variation techniques as well. The coupling of FLOW-FISH-FACS is explored in the context of different downstream applications of sorted cells. Current and emerging applications in environmental microbiology to outline the interactions and processes of complex microbial communities within soil, water, animal microbiota, polymicrobial biofilms, and food samples, are described.
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Affiliation(s)
- André C Pereira
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal; Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
| | - Ana Tenreiro
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
| | - Mónica V Cunha
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal; Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.
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Blood Bacterial DNA Load and Profiling Differ in Colorectal Cancer Patients Compared to Tumor-Free Controls. Cancers (Basel) 2021; 13:cancers13246363. [PMID: 34944982 PMCID: PMC8699505 DOI: 10.3390/cancers13246363] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 11/24/2022] Open
Abstract
Simple Summary In colorectal cancer patients, epithelial barrier dysfunction can lead to increased intestinal permeability, and gut microbiome was found to vary compared to healthy subjects. We conducted a study to investigate whether bacterial translocation from gastrointestinal tract to bloodstream is associated to intestinal adenoma and/or colorectal cancer. In particular, an epidemiological and metagenomic approach was used to evaluate the relation of the bacterial DNA load and the bacterial taxonomic groups—assessed by 16S rRNA profiling—in blood with the risks of intestinal adenoma and colorectal cancer. These findings can confirm the presence of bacterial DNA in blood in healthy adults and serve as a basis to evaluate new non-invasive techniques for an early CRC diagnosis through the analyses of bacterial DNA circulating in peripheral blood. Abstract Inflammation and immunity are linked to intestinal adenoma (IA) and colorectal cancer (CRC) development. The gut microbiota is associated with CRC risk. Epithelial barrier dysfunction can occur, possibly leading to increased intestinal permeability in CRC patients. We conducted a case-control study including 100 incident histologically confirmed CRC cases, and 100 IA and 100 healthy subjects, matched to cases by center, sex and age. We performed 16S rRNA gene analysis of blood and applied conditional logistic regression. Further analyses were based on negative binomial distribution normalization and Random Forest algorithm. We found an overrepresentation of blood 16S rRNA gene copies in colon cancer as compared to tumor-free controls. For high levels of gene copies, community diversity was higher in colon cancer cases than controls. Bacterial taxa and operational taxonomic unit abundances were different between groups and were able to predict CRC with an accuracy of 0.70. Our data support the hypothesis of a higher passage of bacteria from gastrointestinal tract to bloodstream in colon cancer. This result can be applied on non-invasive diagnostic tests for colon cancer control.
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11
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Wimmer-Scherr C, Taminiau B, Renaud B, van Loon G, Palmers K, Votion D, Amory H, Daube G, Cesarini C. Comparison of Fecal Microbiota of Horses Suffering from Atypical Myopathy and Healthy Co-Grazers. Animals (Basel) 2021; 11:ani11020506. [PMID: 33672034 PMCID: PMC7919468 DOI: 10.3390/ani11020506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 12/21/2022] Open
Abstract
Equine atypical myopathy (AM) is caused by hypoglycin A (HGA) and methylenecyclopropylglycine (MCPG) intoxication resulting from the ingestion of seeds or seedlings of some Acer tree species. Interestingly, not all horses pasturing in the same toxic environment develop signs of the disease. In other species, it has been shown that the intestinal microbiota has an impact on digestion, metabolism, immune stimulation and protection from disease. The objective of this study was to characterize and compare fecal microbiota of horses suffering from AM and healthy co-grazers. Furthermore, potential differences in fecal microbiota regarding the outcome of diseased animals were assessed. This prospective observational study included 59 horses with AM (29 survivors and 30 non-survivors) referred to three Belgian equine hospitals and 26 clinically healthy co-grazers simultaneously sharing contaminated pastures during spring and autumn outbreak periods. Fresh fecal samples (rectal or within 30 min of defecation) were obtained from all horses and bacterial taxonomy profiling obtained by 16S amplicon sequencing was used to identify differentially distributed bacterial taxa between AM-affected horses and healthy co-grazers. Fecal microbial diversity and evenness were significantly (p < 0.001) higher in AM-affected horses as compared with their non-affected co-grazers. The relative abundance of families Ruminococcaceae, Christensenellaceae and Akkermansiaceae were higher (p ≤ 0.001) whereas those of the Lachnospiraceae (p = 0.0053), Bacteroidales (p < 0.0001) and Clostridiales (p = 0.0402) were lower in horses with AM, especially in those with a poor prognosis. While significant shifts were observed, it is still unclear whether they result from the disease or might be involved in the onset of disease pathogenesis.
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Affiliation(s)
- Christina Wimmer-Scherr
- Equine Clinical Department, Faculty of Veterinary Medicine, Bât. B41, Sart Tilman, University of Liège, 4000 Liège, Belgium; (C.W.-S.); (H.A.)
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
| | - Bernard Taminiau
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
- Department of Food Sciences–Microbiology, Faculty of Veterinary Medicine, University of Liège, Avenue de Cureghem 10, Bât. B43b, 4000 Liège, Belgium
| | - Benoît Renaud
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
- Department of Functional Sciences, Pharmacology and Toxicology, Faculty of Veterinary Medicine, Bât. B41, Sart Tilman, University of Liège, 4000 Liège, Belgium
| | - Gunther van Loon
- Large Animal Internal Medicine, Gent University, 9820 Gent, Belgium;
| | | | - Dominique Votion
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
| | - Hélène Amory
- Equine Clinical Department, Faculty of Veterinary Medicine, Bât. B41, Sart Tilman, University of Liège, 4000 Liège, Belgium; (C.W.-S.); (H.A.)
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
| | - Georges Daube
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
- Department of Food Sciences–Microbiology, Faculty of Veterinary Medicine, University of Liège, Avenue de Cureghem 10, Bât. B43b, 4000 Liège, Belgium
| | - Carla Cesarini
- Equine Clinical Department, Faculty of Veterinary Medicine, Bât. B41, Sart Tilman, University of Liège, 4000 Liège, Belgium; (C.W.-S.); (H.A.)
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, Sart Tilman, University of Liège, 4000 Liège, Belgium; (B.T.); (B.R.); (D.V.); (G.D.)
- Correspondence:
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12
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Extraction of Microbial Cells from Environmental Samples for FISH Approaches. Methods Mol Biol 2021. [PMID: 33576997 DOI: 10.1007/978-1-0716-1115-9_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Fluorescent in situ hybridization (FISH) on environmental samples has become a standard technique to identify and enumerate microbial populations. However, visualization and quantification of cells in environmental samples with complex matrices is often challenging to impossible, and downstream protocols might also require the absence of organic and inorganic particles for analysis. Therefore, quite often microbial cells have to be detached and extracted from the sample matrix prior to use in FISH. Here, details are given for a routine protocol to extract intact microbial cells from environmental samples using density gradient centrifugation. This protocol is suitable and adaptable for a wide range of environmental samples.
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13
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Taguer M, Quillier O, Maurice CF. Effects of oxygen exposure on relative nucleic acid content and membrane integrity in the human gut microbiota. PeerJ 2021; 9:e10602. [PMID: 33604166 PMCID: PMC7866891 DOI: 10.7717/peerj.10602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/27/2020] [Indexed: 12/16/2022] Open
Abstract
While the diversity of the human gut microbiota is becoming increasingly well characterized, bacterial physiology is still a critical missing link in understanding how the gut microbiota may be implicated in disease. The current best practice for studying bacterial physiology involves the immediate storage of fecal samples in an anaerobic chamber. This reliance on immediate access to anaerobic chambers greatly limits the scope of sample populations that can be studied. Here, we assess the effects of short-term oxygen exposure on gut bacterial physiology and diversity. We use relative nucleic acid content and membrane integrity as markers of bacterial physiology, and 16S rRNA gene amplicon sequencing to measure bacterial diversity. Samples were stored for up to 6 h in either ambient conditions or in anoxic environments created with gas packs or in an anaerobic chamber. Our data indicate that AnaeroGen sachets preserve bacterial membrane integrity and nucleic acid content over the course of 6 h similar to storage in an anaerobic chamber. Short-term oxygen exposure increases bacterial membrane permeability, without exceeding inter-individual differences. As oxygen exposure remains an important experimental consideration for bacterial metabolism, our data suggest that AnaeroGen sachets are a valid alternative limiting loss of membrane integrity for short-term storage of samples from harder-to-access populations.
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Affiliation(s)
- Mariia Taguer
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Ophélie Quillier
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Corinne F. Maurice
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
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14
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Zeng Y, Wang Z, Zou T, Chen J, Li G, Zheng L, Li S, You J. Bacteriophage as an Alternative to Antibiotics Promotes Growth Performance by Regulating Intestinal Inflammation, Intestinal Barrier Function and Gut Microbiota in Weaned Piglets. Front Vet Sci 2021; 8:623899. [PMID: 33585620 PMCID: PMC7874526 DOI: 10.3389/fvets.2021.623899] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/04/2021] [Indexed: 12/11/2022] Open
Abstract
This study aimed to investigate the effects of dietary bacteriophage supplementation on growth performance, intestinal morphology, barrier function, and intestinal microbiota of weaned piglets fed antibiotic-free diet. A total of 120 weaned piglets were allotted to four dietary treatments with five pens/treatment and six piglets/pen in a 21-d feeding trial. The control diet was supplemented with 25 mg/kg quinocetone and 11.25 mg/kg aureomycin in the basal diet, while the three treatment diets were supplemented with 200, 400, or 600 mg/kg bacteriophage in the basal diet, respectively. There was no difference for growth performance and all measured indices of serum and intestinal tissues between 200 mg/kg bacteriophage group and the control group with antibiotics (P > 0.05). More importantly, compared with the control diet, dietary 400 mg/kg bacteriophage inclusion increased average daily gain and average daily feed intake, and decreased feed/gain ratio and diarrhea incidence of weaned piglets (P < 0.05). Also, piglets fed 400 mg/kg bacteriophage had elevated villi height (VH) in jejunum and ileum, reduced crypt depth (CD) in jejunum and ileum, and elevated VH/CD ratio in duodenum, jejunum and ileum (P < 0.05). Compared to the control group, piglets fed 400 mg/kg bacteriophage had lower interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α), and higher interleukin-10 (IL-10) concentration in serum, and higher secretory immunoglobulin A (sIgA), intestinal trefoil factor (ITF), and tumor growth factor-alpha (TGF-α) content in the ileal mucosa (P < 0.05). Besides, dietary addition with 400 mg/kg bacteriophage decreased the D-lactate concentration and diamine oxidase (DAO) activity in serum, and increased the relative mRNA expression of ZO-1, Claudin-1, Occludin, TLR2, TLR4, and TLR9, as well as the relative protein expression of Occludin in the jejunum (P < 0.05). However, the growth performance and all analyzed parameters in serum and intestinal tissues were not further improved when piglets fed 600 vs. 400 mg/kg bacteriophage (P > 0.05). MiSeq sequencing analysis showed that bacteriophage regulated the microbial composition in caecum digesta, as indicated by higher observed_species, Chao1, and ACE richness indices, as well as changes in the relative abundance of Firmicutes, Bacteroidetes, and Tenericutes (P < 0.05). Collectively, 400 mg/kg bacteriophage can be used as an antibiotics alternative for promoting the growth of weaned piglets. The underlying mechanism is associated with a positive effect of bacteriophage on intestinal inflammation, intestinal barrier function and gut microbiota in weaned piglets.
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Affiliation(s)
- Yongdi Zeng
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Zirui Wang
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Tiande Zou
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Jun Chen
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Guanhong Li
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Liuzhen Zheng
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Shuo Li
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
| | - Jinming You
- Jiangxi Province Key Laboratory of Animal Nutrition, Jiangxi Agricultural University, Nanchang, China.,Jiangxi Province Key Innovation Center of Integration in Production and Education for High-Quality and Safe Livestock and Poultry, Jiangxi Agricultural University, Nanchang, China
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15
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Taguer M, Shapiro BJ, Maurice CF. Translational activity is uncoupled from nucleic acid content in bacterial cells of the human gut microbiota. Gut Microbes 2021; 13:1-15. [PMID: 33779505 PMCID: PMC8009119 DOI: 10.1080/19490976.2021.1903289] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 02/12/2021] [Accepted: 03/02/2021] [Indexed: 02/04/2023] Open
Abstract
Changes in bacterial diversity in the human gut have been associated with many conditions, despite not always reflecting changes in bacterial activity. Methods linking bacterial identity to function are needed for improved understanding of how bacterial communities adapt and respond to their environment, including the gut. Here, we optimized bioorthogonal non-canonical amino acid tagging (BONCAT) for the gut microbiota and combined it with fluorescently activated cell sorting and sequencing (FACS-Seq) to identify the translationally active members of the community. We then used this novel technique to compare with other bulk community measurements of activity and viability: relative nucleic acid content and membrane damage. The translationally active bacteria represent about half of the gut microbiota, and are not distinct from the whole community. The high nucleic acid content bacteria also represent half of the gut microbiota, but are distinct from the whole community and correlate with the damaged subset. Perturbing the community with xenobiotics previously shown to alter bacterial activity but not diversity resulted in stronger changes in the distinct physiological fractions than in the whole community. BONCAT is a suitable method to probe the translationally active members of the gut microbiota, and combined with FACS-Seq, allows for their identification. The high nucleic acid content bacteria are not necessarily the protein-producing bacteria in the community; thus, further work is needed to understand the relationship between nucleic acid content and bacterial metabolism in the human gut. Considering physiologically distinct subsets of the gut microbiota may be more informative than whole-community profiling.
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Affiliation(s)
- Mariia Taguer
- Department of Microbiology & Immunology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - B. Jesse Shapiro
- Department of Microbiology & Immunology, McGill Genome Centre, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Corinne F. Maurice
- Department of Microbiology & Immunology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
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16
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Santos-Garcia D, Mestre-Rincon N, Zchori-Fein E, Morin S. Inside out: microbiota dynamics during host-plant adaptation of whiteflies. ISME JOURNAL 2020; 14:847-856. [PMID: 31896788 PMCID: PMC7031279 DOI: 10.1038/s41396-019-0576-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 12/17/2019] [Indexed: 12/14/2022]
Abstract
While most insect herbivores are selective feeders, a small proportion of them feed on a wide range of plants. This polyphagous habit requires overcoming a remarkable array of defenses, which often necessitates an adaptation period. Efforts for understanding the mechanisms involved mostly focus on the insect’s phenotypic plasticity. Here, we hypothesized that the adaptation process might partially rely on transient associations with bacteria. To test this, we followed in a field-like experiment, the adaptation process of Bemisia tabaci, a generalist sap feeder, to pepper (a less-suitable host), after switching from watermelon (a suitable host). Amplicon sequencing of 16S rRNA transcripts from hundreds of dissected guts revealed the presence of active “core” and “transient” bacterial communities, dominated by the phyla Proteobacteria, Actinobacteria, and Firmicutes, and increasing differences between populations grown on watermelon and pepper. Insects grown on pepper for over two generations presented a significant increase in specific genera, mainly Mycobacterium, with a predicted enrichment in degradative pathways of xenobiotics and secondary metabolites. This result correlated with a significant increase in the insect’s survival on pepper. Taken together, our findings suggest that gut-associated bacteria can provide an additional flexible metabolic “tool-box” to generalist sap feeders for facilitating a quick host switching process.
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Affiliation(s)
- Diego Santos-Garcia
- Department of Entomology, The Hebrew University of Jerusalem, P.O. Box 12, 76100, Rehovot, Israel.
| | - Natividad Mestre-Rincon
- Department of Entomology, The Hebrew University of Jerusalem, P.O. Box 12, 76100, Rehovot, Israel
| | - Einat Zchori-Fein
- Department of Entomology, Newe-Ya'ar Research Center, ARO, Ramat-Yishai, Israel
| | - Shai Morin
- Department of Entomology, The Hebrew University of Jerusalem, P.O. Box 12, 76100, Rehovot, Israel
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17
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Colas L, Mongodin EF, Montassier E, Chesneau M, Guerif P, Hittle L, Giral M, Bromberg JS, Brouard S. Unique and specific Proteobacteria diversity in urinary microbiota of tolerant kidney transplanted recipients. Am J Transplant 2020; 20:145-158. [PMID: 31374143 DOI: 10.1111/ajt.15549] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/15/2019] [Accepted: 07/19/2019] [Indexed: 01/25/2023]
Abstract
Host-microbiota interactions can modulate the immune system both at local and systemic levels, with potential consequences for organ transplantation outcomes. In this study, we hypothesized that differences in the urinary microbiome following kidney transplantation would be associated with posttransplantation status: stable, minimally immunosuppressed, or tolerant. One hundred thirteen urine samples from stable (n = 51), minimally immunosuppressed (n = 19), and spontaneously tolerant (n = 16) patients, paired with age-matched controls (n = 27) were profiled and compared to each other at a taxonomic level with special interest in the immunosuppressive regimen. All comparisons and correlations were adjusted on sex and time posttransplantation. Our results highlighted a unique and specific urinary microbiota associated with spontaneous tolerance characterized by a high diversity and a clear Proteobacteria profile. Finally, we report that this profile is (1) impacted by gender, (2) inversely correlated with immunosuppressive drugs (calcineurin inhibitors and mammalian target of rapamycin inhibitors), and (3) stable in time.
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Affiliation(s)
- Luc Colas
- Plateforme Transversale d'Allergologie et d'Immunologie Clinique, Institut du Thorax, CHU de Nantes, Nantes, France
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
| | - Emmanuel F Mongodin
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland
| | | | - Mélanie Chesneau
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
| | - Pierrick Guerif
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
| | - Lauren Hittle
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland
| | - Magali Giral
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
| | - Jonathan S Bromberg
- Departments of Surgery and Microbiology and Immunology, and the Center for Vascular and Inflammatory Diseases, University of Maryland, School of Medicine, Baltimore, Maryland
| | - Sophie Brouard
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, Nantes, France
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
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18
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Gargari G, Deon V, Taverniti V, Gardana C, Denina M, Riso P, Guardamagna O, Guglielmetti S. Evidence of dysbiosis in the intestinal microbial ecosystem of children and adolescents with primary hyperlipidemia and the potential role of regular hazelnut intake. FEMS Microbiol Ecol 2019; 94:4939468. [PMID: 29566154 DOI: 10.1093/femsec/fiy045] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 12/12/2022] Open
Abstract
Hyperlipidemia starts at a pediatric age and represents an unquestionable risk factor for cardiovascular disease. Modulation of the intestinal microbial ecosystem (IME), in principle, can ameliorate lipid profiles. In this study, we characterized the IME of children and adolescents with primary hyperlipidemia by analyzing fecal samples through 16S rRNA gene profiling (n = 15) and short chain fatty acid (SCFA) quantification (n = 32). The same analyses were also carried out on age-matched normolipidemic controls (n = 15). Moreover, we evaluated the modulatory effect of regular hazelnut intake (approximately 0.43 g of hazelnuts with skin per kg of body weight) on the IME of 15 children and adolescents with hyperlipidemia for eight weeks. We found alterations of numerous operational taxonomic units potentially associated with SCFA-producing bacteria and reductions in the fecal levels of acetate, butyrate and propionate in hyperlipidemic subjects. Furthermore, we observed that an eight-week hazelnut intervention may induce limited changes in fecal microbiota composition but can significantly modulate the fecal levels of predominant intestinal SCFAs, such as acetate. Finally, correlation analyses indicated that changes in lipidemic parameters are linked to modifications of the abundance of specific bacterial taxa, such as the families Lachnospiraceae and Ruminococcaceae and the genera Akkermansia, Bacteroides, Roseburia, and Faecalibacterium. This study suggests that children and adolescents with primary hyperlipidemia possess an altered IME. The promising results presented here support the need for future dietary interventions aimed at positively modulating the IME of hyperlipidemic subjects.
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Affiliation(s)
- Giorgio Gargari
- Division of Food Microbiology and Bioprocesses, Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy
| | - Valeria Deon
- Division of Nutrition, Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy
| | - Valentina Taverniti
- Division of Food Microbiology and Bioprocesses, Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy
| | - Claudio Gardana
- Division of Nutrition, Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy
| | - Marco Denina
- Dipartimento di Scienze della Sanità Pubblica e Pediatriche, Università di Torino, 10124 Torino, Italy
| | - Patrizia Riso
- Division of Nutrition, Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy
| | - Ornella Guardamagna
- Dipartimento di Scienze della Sanità Pubblica e Pediatriche, Università di Torino, 10124 Torino, Italy
| | - Simone Guglielmetti
- Division of Food Microbiology and Bioprocesses, Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy
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19
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Zhang F, Zheng W, Xue Y, Yao W. Suhuai suckling piglet hindgut microbiome-metabolome responses to different dietary copper levels. Appl Microbiol Biotechnol 2018; 103:853-868. [PMID: 30535578 PMCID: PMC6373200 DOI: 10.1007/s00253-018-9533-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/07/2018] [Accepted: 11/18/2018] [Indexed: 01/19/2023]
Abstract
Unabsorbed copper accumulates in the hindgut of pigs that consume high levels of dietary copper, which enhances the coselection of antibiotic-resistant bacteria and is considered detrimental to the environment and to porcine health. In our study, a combination of 16S rRNA pyrosequencing and nontargeted metabolomics was used to investigate the microbiome-metabolome responses to dietary copper levels in the hindgut of suckling piglets. The results showed that the dietary copper level affected the abundance of several Clostridia genera and that the relative abundance of butyrate-producing bacteria, such as Coprococcus, Roseburia, and Acidaminococcus, was reduced in the 300 mg kg−1 (high) Cu group. Metabolomic analysis revealed that dietary copper levels affected protein and carbohydrate metabolites, protein biosynthesis, the urea cycle, galactose metabolism, gluconeogenesis, and amino acid metabolism (including the metabolism of arginine, proline, β-alanine, phenylalanine, tyrosine, and methionine). Furthermore, Pearson’s correlation analysis showed that the abundance levels of Coprococcus (family Lachnospiraceae) and operational taxonomic unit (OTU) 18 (family Ruminococcaceae) were positively correlated with energy metabolism pathways (gluconeogenesis, glycolysis, and the pentose phosphate pathway). The abundance of Streptococcus was negatively correlated with amino acid metabolism pathways (protein biosynthesis, glycine, serine, threonine, methionine, phenylalanine, and tyrosine metabolism), and OTU583 and OTU1067 (family Rikenellaceae) were positively correlated with amino acid metabolism pathways. These results suggest that the copper levels consumed by LC (low-copper group) versus HC (high-copper group) animals alter the composition of the gut microbiota and modulate microbial metabolic pathways, which may further affect the health of suckling piglets.
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Affiliation(s)
- Feng Zhang
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.,College of Agriculture, Guangdong Ocean University, Zhanjiang, China
| | - Weijiang Zheng
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yongqiang Xue
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Wen Yao
- Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China. .,Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing, China.
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20
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Moen AEF, Lindstrøm JC, Tannæs TM, Vatn S, Ricanek P, Vatn MH, Jahnsen J. The prevalence and transcriptional activity of the mucosal microbiota of ulcerative colitis patients. Sci Rep 2018; 8:17278. [PMID: 30467421 PMCID: PMC6250705 DOI: 10.1038/s41598-018-35243-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 11/01/2018] [Indexed: 12/16/2022] Open
Abstract
Active microbes likely have larger impact on gut health status compared to inactive or dormant microbes. We investigate the composition of active and total mucosal microbiota of treatment-naïve ulcerative colitis (UC) patients to determine the microbial picture at the start-up phase of disease, using both a 16S rRNA transcript and gene amplicon sequencing. DNA and RNA were isolated from the same mucosal colonic biopsies. Our aim was to identify active microbial members of the microbiota in early stages of disease and reveal which members are present, but do not act as major players. We demonstrated differences in active and total microbiota of UC patients when comparing inflamed to non-inflamed tissue. Several taxa, among them the Proteobacteria phyla and families therein, revealed lower transcriptional activity despite a high presence. The Bifidobacteriaceae family of the Actinobacteria phylum showed lower abundance in the active microbiota, although no difference in presence was detected. The most abundant microbiota members of the inflamed tissue in UC patients were not the most active. Knowledge of active members of microbiota in UC patients could enhance our understanding of disease etiology. The active microbial community composition did not deviate from the total when comparing UC patients to non-IBD controls.
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Affiliation(s)
- Aina E Fossum Moen
- Department of Clinical Molecular Biology (EpiGen), Division of Medicine, Akershus University Hospital, Lørenskog, and University of Oslo, Oslo, Norway
| | - Jonas Christoffer Lindstrøm
- Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
| | - Tone Møller Tannæs
- Department of Clinical Molecular Biology (EpiGen), Division of Medicine, Akershus University Hospital, Lørenskog, and University of Oslo, Oslo, Norway.
| | - Simen Vatn
- Department of Gastroenterology, Division of Medicine, Akershus University Hospital, Lørenskog, and University of Oslo, Oslo, Norway
| | - Petr Ricanek
- Department of Gastroenterology, Division of Medicine, Akershus University Hospital, Lørenskog, and University of Oslo, Oslo, Norway
| | - Morten H Vatn
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
| | - Jørgen Jahnsen
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
- Department of Gastroenterology, Division of Medicine, Akershus University Hospital, Lørenskog, and University of Oslo, Oslo, Norway
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21
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Peña-Zalbidea S, Huang AYT, Kavunja HW, Salinas B, Desco M, Drake C, Woodruff PJ, Vaquero JJ, Swarts BM. Chemoenzymatic radiosynthesis of 2-deoxy-2-[ 18F]fluoro-d-trehalose ([ 18F]-2-FDTre): A PET radioprobe for in vivo tracing of trehalose metabolism. Carbohydr Res 2018; 472:16-22. [PMID: 30428395 DOI: 10.1016/j.carres.2018.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/24/2018] [Accepted: 11/03/2018] [Indexed: 02/07/2023]
Abstract
Trehalose analogues bearing fluorescent and click chemistry tags have been developed as probes of bacterial trehalose metabolism, but these tools have limitations with respect to in vivo imaging applications. Here, we report the radiosynthesis of the 18F-modified trehalose analogue 2-deoxy-2-[18F]fluoro-d-trehalose ([18F]-2-FDTre), which in principle can be used in conjunction with positron emission tomography (PET) imaging to allow in vivo imaging of trehalose metabolism in various contexts. A chemoenzymatic method employing the thermophilic TreT enzyme from Thermoproteus tenax was used to rapidly (15-20 min), efficiently (70% radiochemical yield; ≥ 95% radiochemical purity), and reproducibly convert the commercially available radiotracer 2-deoxy-2-[18F]fluoro-d-glucose ([18F]-2-FDG) into the target radioprobe [18F]-2-FDTre in a single step; both manual and automated syntheses were performed with similar results. Cellular uptake experiments showed that radiosynthetic [18F]-2-FDTre was metabolized by Mycobacterium smegmatis but not by various mammalian cell lines, pointing to the potential future use of this radioprobe for selective PET imaging of infections caused by trehalose-metabolizing bacterial pathogens such as M. tuberculosis.
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Affiliation(s)
- Santiago Peña-Zalbidea
- Dept. Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Ashley Y-T Huang
- Department of Chemistry and Biochemistry, Central Michigan University, Mount Pleasant, MI, United States
| | - Herbert W Kavunja
- Department of Chemistry and Biochemistry, Central Michigan University, Mount Pleasant, MI, United States
| | - Beatriz Salinas
- Dept. Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Manuel Desco
- Dept. Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
| | | | - Peter J Woodruff
- Department of Chemistry, University of Southern Maine, Portland, ME, United States
| | - Juan J Vaquero
- Dept. Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
| | - Benjamin M Swarts
- Department of Chemistry and Biochemistry, Central Michigan University, Mount Pleasant, MI, United States.
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22
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Cai J, Nichols RG, Koo I, Kalikow ZA, Zhang L, Tian Y, Zhang J, Smith PB, Patterson AD. Multiplatform Physiologic and Metabolic Phenotyping Reveals Microbial Toxicity. mSystems 2018; 3:e00123-18. [PMID: 30417115 PMCID: PMC6222046 DOI: 10.1128/msystems.00123-18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/11/2018] [Indexed: 02/06/2023] Open
Abstract
The gut microbiota is susceptible to modulation by environmental stimuli and therefore can serve as a biological sensor. Recent evidence suggests that xenobiotics can disrupt the interaction between the microbiota and host. Here, we describe an approach that combines in vitro microbial incubation (isolated cecal contents from mice), flow cytometry, and mass spectrometry- and 1H nuclear magnetic resonance (NMR)-based metabolomics to evaluate xenobiotic-induced microbial toxicity. Tempol, a stabilized free radical scavenger known to remodel the microbial community structure and function in vivo, was studied to assess its direct effect on the gut microbiota. The microbiota was isolated from mouse cecum and was exposed to tempol for 4 h under strict anaerobic conditions. The flow cytometry data suggested that short-term tempol exposure to the microbiota is associated with disrupted membrane physiology as well as compromised metabolic activity. Mass spectrometry and NMR metabolomics revealed that tempol exposure significantly disrupted microbial metabolic activity, specifically indicated by changes in short-chain fatty acids, branched-chain amino acids, amino acids, nucleotides, glucose, and oligosaccharides. In addition, a mouse study with tempol (5 days gavage) showed similar microbial physiologic and metabolic changes, indicating that the in vitro approach reflected in vivo conditions. Our results, through evaluation of microbial viability, physiology, and metabolism and a comparison of in vitro and in vivo exposures with tempol, suggest that physiologic and metabolic phenotyping can provide unique insight into gut microbiota toxicity. IMPORTANCE The gut microbiota is modulated physiologically, compositionally, and metabolically by xenobiotics, potentially causing metabolic consequences to the host. We recently reported that tempol, a stabilized free radical nitroxide, can exert beneficial effects on the host through modulation of the microbiome community structure and function. Here, we investigated a multiplatform phenotyping approach that combines high-throughput global metabolomics with flow cytometry to evaluate the direct effect of tempol on the microbiota. This approach may be useful in deciphering how other xenobiotics directly influence the microbiota.
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Affiliation(s)
- Jingwei Cai
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Robert G. Nichols
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Imhoi Koo
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Zachary A. Kalikow
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Limin Zhang
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
- CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences (CAS), Wuhan, China
| | - Yuan Tian
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
- CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences (CAS), Wuhan, China
| | - Jingtao Zhang
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Philip B. Smith
- Metabolomics Facility, Huck Institutes of Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Andrew D. Patterson
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
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23
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On Controls in Ancient Microbiome Studies, and Microbial Resilience in Ancient Samples. Genes (Basel) 2018; 9:genes9100471. [PMID: 30262781 PMCID: PMC6210261 DOI: 10.3390/genes9100471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/20/2018] [Accepted: 09/21/2018] [Indexed: 11/28/2022] Open
Abstract
In the following comment, we reply to Eisenhofer and Weyrich’s letter “Proper authentication of ancient DNA is still essential” responding to the article “Gut Microbiome and Putative Resistome of Inca and Italian Nobility Mummies” by Santiago-Rodriguez et al. One of the concerns raised was the possibility that the patterns noted in the gut microbiome of pre-Inca/Inca and Italian nobility mummies were due to contamination of the blank control. When examining the blank controls and filtering the operational taxonomic units (OTUs) present in the blank controls, and further performing in-silico contamination analyses, we noticed very similar patterns as those previously reported. We also discuss controls in ancient microbiome studies, and aspects of microbial resilience in ancient samples.
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24
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Gargari G, Taverniti V, Gardana C, Cremon C, Canducci F, Pagano I, Barbaro MR, Bellacosa L, Castellazzi AM, Valsecchi C, Tagliacarne SC, Bellini M, Bertani L, Gambaccini D, Marchi S, Cicala M, Germanà B, Dal Pont E, Vecchi M, Ogliari C, Fiore W, Stanghellini V, Barbara G, Guglielmetti S. Fecal Clostridiales distribution and short-chain fatty acids reflect bowel habits in irritable bowel syndrome. Environ Microbiol 2018; 20:3201-3213. [PMID: 29749705 DOI: 10.1111/1462-2920.14271] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 05/07/2018] [Indexed: 12/16/2022]
Abstract
Irritable bowel syndrome (IBS), a common functional gastrointestinal disorder, is classified according to bowel habits as IBS with constipation (IBS-C), with diarrhea (IBS-D), with alternating constipation and diarrhea (IBS-M), and unsubtyped (IBS-U). The mechanisms leading to the different IBS forms are mostly unknown. This study aims to evaluate whether specific fecal bacterial taxa and/or short-chain fatty acids (SCFAs) can be used to distinguish IBS subtypes and are relevant for explaining the clinical differences between IBS subcategories. We characterized five fecal samples collected at 4-weeks intervals from 40 IBS patients by 16S rRNA gene profiling and SCFA quantification. Finally, we investigated the potential correlations in IBS subtypes between the fecal microbial signatures and host physiological and clinical parameters. We found significant differences in the distribution of Clostridiales OTUs among IBS subtypes and reduced levels of SCFAs in IBS-C compared to IBS-U and IBS-D patients. Correlation analyses showed that the diverse representation of Clostridiales OTUs between IBS subtypes was associated with altered levels of SCFAs; furthermore, the same OTUs and SCFAs were associated with the fecal cytokine levels and stool consistency. Our results suggest that intestinal Clostridiales and SCFAs might serve as potential mechanistic biomarkers of IBS subtypes and represent therapeutic targets.
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Affiliation(s)
- Giorgio Gargari
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Valentina Taverniti
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Claudio Gardana
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Cesare Cremon
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - Filippo Canducci
- Dipartimento di biotecnologie e scienze della vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Isabella Pagano
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - Maria Raffaella Barbaro
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - Lara Bellacosa
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - Anna Maria Castellazzi
- Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Chiara Valsecchi
- Department of Pediatrics, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Sara Carlotta Tagliacarne
- Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Massimo Bellini
- Gastroenterology Unit, Department of Gastroenterology, University of Pisa, Pisa, Italy
| | - Lorenzo Bertani
- Gastroenterology Unit, Department of Gastroenterology, University of Pisa, Pisa, Italy
| | - Dario Gambaccini
- Gastroenterology Unit, Department of Gastroenterology, University of Pisa, Pisa, Italy
| | - Santino Marchi
- Gastroenterology Unit, Department of Gastroenterology, University of Pisa, Pisa, Italy
| | - Michele Cicala
- Gastroenterology Unit, University Campus Bio-Medico of Rome, Rome, Italy
| | | | | | - Maurizio Vecchi
- Gastroenterology and Digestive Endoscopy Unit, IRCCS Policlinico San Donato, San Donato, Milanese, Italy
| | - Cristina Ogliari
- Gastroenterology and Digestive Endoscopy Unit, IRCCS Policlinico San Donato, San Donato, Milanese, Italy
| | | | - Vincenzo Stanghellini
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - Giovanni Barbara
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - Simone Guglielmetti
- Division of Food Microbiology and Bioprocesses, Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
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25
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Network-guided genomic and metagenomic analysis of the faecal microbiota of the critically endangered kakapo. Sci Rep 2018; 8:8128. [PMID: 29802288 PMCID: PMC5970201 DOI: 10.1038/s41598-018-26484-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 05/11/2018] [Indexed: 12/25/2022] Open
Abstract
The kakapo is a critically endangered, herbivorous parrot endemic to New Zealand. The kakapo hindgut hosts a dense microbial community of low taxonomic diversity, typically dominated by Escherichia fergusonii, and has proven to be a remarkably stable ecosystem, displaying little variation in core membership over years of study. To elucidate mechanisms underlying this robustness, we performed 16S rRNA gene-based co-occurrence network analysis to identify potential interactions between E. fergusonii and the wider bacterial community. Genomic and metagenomic sequencing were employed to facilitate interpretation of potential interactions observed in the network. E. fergusonii maintained very few correlations with other members of the microbiota, and isolates possessed genes for the generation of energy from a wide range of carbohydrate sources, including plant fibres such as cellulose. We surmise that this dominant microorganism is abundant not due to ecological interaction with other members of the microbiota, but its ability to metabolise a wide range of nutrients in the gut. This research represents the first concerted effort to understand the functional roles of the kakapo microbiota, and leverages metagenomic data to contextualise co-occurrence patterns. By combining these two techniques we provide a means for studying the diversity-stability hypothesis in the context of bacterial ecosystems.
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26
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Ji Y, Park S, Park H, Hwang E, Shin H, Pot B, Holzapfel WH. Modulation of Active Gut Microbiota by Lactobacillus rhamnosus GG in a Diet Induced Obesity Murine Model. Front Microbiol 2018; 9:710. [PMID: 29692770 PMCID: PMC5902571 DOI: 10.3389/fmicb.2018.00710] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/27/2018] [Indexed: 12/23/2022] Open
Abstract
Gut microbiota play a key role in the development of metabolic disorders. Defining and correlating structural shifts in gut microbial assemblages with conditions related to metabolic syndrome have, however, been proven difficult. Results from 16S genomic DNA and 16S ribosomal RNA analyses of fecal samples may differ widely, leading to controversial information on the whole microbial community and metabolically active microbiota. Using a C57BL/6J murine model, we compared data from 16S genomic DNA and ribosomal RNA of the fecal microbiota. The study included three groups of experimental animals comprising two groups with high fat diet induced obesity (DIO) while a third group (control) received a low fat diet. One of the DIO groups was treated with the probiotic Lactobacillus rhamnosus GG (LGG). Compared to the data obtained by DNA analysis, a significantly higher abundance of OTUs was accounted for by RNA analysis. Moreover, rRNA based analysis showed a modulation of the active gut microbial population in the DIO group receiving LGG, thus reflecting a change in the induced obesity status of the host. As one of the most widely studied probiotics the functionality of LGG has been linked to the alleviation of metabolic syndrome, and, in some cases, to an impact on the microbiome. Yet, it appears that no study has reported thus far on modulation of the active microbiota by LGG treatment. It is postulated that the resulting impact on calorie consumption affects weight gain concomitantly with modulation of the functional structure of the gut microbial population. Using the 16S rRNA based approach therefore decisively increased the precision of gut microbiota metagenome analysis.
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Affiliation(s)
- Yosep Ji
- Graduate School of Advanced Green Energy and Environment, Handong Global University, Pohang, South Korea
| | - Soyoung Park
- Graduate School of Advanced Green Energy and Environment, Handong Global University, Pohang, South Korea
| | - Haryung Park
- Graduate School of Advanced Green Energy and Environment, Handong Global University, Pohang, South Korea
| | - Eunchong Hwang
- Graduate School of Advanced Green Energy and Environment, Handong Global University, Pohang, South Korea
| | - Hyeunkil Shin
- School of Life Sciences, Handong Global University, Pohang, South Korea
| | - Bruno Pot
- Research Group of Industrial Microbiology and Food Biotechnology, Department of Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Wilhelm H Holzapfel
- Graduate School of Advanced Green Energy and Environment, Handong Global University, Pohang, South Korea
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27
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Banerjee S, Sar A, Misra A, Pal S, Chakraborty A, Dam B. Increased productivity in poultry birds by sub-lethal dose of antibiotics is arbitrated by selective enrichment of gut microbiota, particularly short-chain fatty acid producers. Microbiology (Reading) 2018; 164:142-153. [PMID: 29393019 DOI: 10.1099/mic.0.000597] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Sohini Banerjee
- Microbiology Laboratory, Department of Botany (DST-FIST & UGC-DRS Funded), Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
- Department of Environmental Studies, Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
| | - Abhijit Sar
- Microbiology Laboratory, Department of Botany (DST-FIST & UGC-DRS Funded), Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
| | - Arijit Misra
- Microbiology Laboratory, Department of Botany (DST-FIST & UGC-DRS Funded), Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
| | - Srikanta Pal
- Microbiology Laboratory, Department of Botany (DST-FIST & UGC-DRS Funded), Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
| | - Arindom Chakraborty
- Department of Statistics, Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
| | - Bomba Dam
- Microbiology Laboratory, Department of Botany (DST-FIST & UGC-DRS Funded), Institute of Science, Visva-Bharati (A Central University), Santiniketan, West Bengal 731235, India
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28
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Džunková M, Martinez-Martinez D, Gardlík R, Behuliak M, Janšáková K, Jiménez N, Vázquez-Castellanos JF, Martí JM, D’Auria G, Bandara HMHN, Latorre A, Celec P, Moya A. Oxidative stress in the oral cavity is driven by individual-specific bacterial communities. NPJ Biofilms Microbiomes 2018; 4:29. [PMID: 30510769 PMCID: PMC6258756 DOI: 10.1038/s41522-018-0072-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 10/15/2018] [Indexed: 02/07/2023] Open
Abstract
The term "bacterial dysbiosis" is being used quite extensively in metagenomic studies, however, the identification of harmful bacteria often fails due to large overlap between the bacterial species found in healthy volunteers and patients. We hypothesized that the pathogenic oral bacteria are individual-specific and they correlate with oxidative stress markers in saliva which reflect the inflammatory processes in the oral cavity. Temporally direct and lagged correlations between the markers and bacterial taxa were computed individually for 26 volunteers who provided saliva samples during one month (21.2 ± 2.7 samples/volunteer, 551 samples in total). The volunteers' microbiomes differed significantly by their composition and also by their degree of microbiome temporal variability and oxidative stress markers fluctuation. The results showed that each of the marker-taxa pairs can have negative correlations in some volunteers while positive in others. Streptococcus mutans, which used to be associated with caries before the metagenomics era, had the most prominent correlations with the oxidative stress markers, however, these correlations were not confirmed in all volunteers. The importance of longitudinal samples collections in correlation studies was underlined by simulation of single sample collections in 1000 different combinations which produced contradictory results. In conclusion, the distinct intra-individual correlation patterns suggest that different bacterial consortia might be involved in the oxidative stress induction in each human subject. In the future, decreasing cost of DNA sequencing will allow to analyze multiple samples from each patient, which might help to explore potential diagnostic applications and understand pathogenesis of microbiome-associated oral diseases.
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Affiliation(s)
- Mária Džunková
- grid.484129.2Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
- 0000 0001 2173 938Xgrid.5338.dInstitute for Integrative Systems Biology (I2SysBio), The University of Valencia and The Spanish National Research Council (CSIC)-UVEG, Valencia, Spain
- 0000 0000 9320 7537grid.1003.2Australian Centre for Ecogenomics, The University of Queensland, St Lucia, QLD Australia
| | - Daniel Martinez-Martinez
- grid.484129.2Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
- 0000 0001 2173 938Xgrid.5338.dInstitute for Integrative Systems Biology (I2SysBio), The University of Valencia and The Spanish National Research Council (CSIC)-UVEG, Valencia, Spain
| | - Roman Gardlík
- 0000000109409708grid.7634.6Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Michal Behuliak
- 0000000109409708grid.7634.6Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
- 0000 0001 1015 3316grid.418095.1Institute of Physiology, Academy of Sciences of the Czech Republic, Praha, Czech Republic
| | - Katarína Janšáková
- 0000000109409708grid.7634.6Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
- 0000000109409708grid.7634.6Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Nuria Jiménez
- grid.484129.2Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
- 0000 0001 2173 938Xgrid.5338.dInstitute for Integrative Systems Biology (I2SysBio), The University of Valencia and The Spanish National Research Council (CSIC)-UVEG, Valencia, Spain
| | - Jorge F. Vázquez-Castellanos
- grid.484129.2Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
| | - Jose Manuel Martí
- 0000 0001 2173 938Xgrid.5338.dInstitute for Integrative Systems Biology (I2SysBio), The University of Valencia and The Spanish National Research Council (CSIC)-UVEG, Valencia, Spain
| | - Giuseppe D’Auria
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
- grid.484129.2Sequencing and Bioinformatics Service of the Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
| | - H. M. H. N. Bandara
- 0000 0000 9320 7537grid.1003.2School of Dentistry, The University of Queensland, Herston, QLD Australia
| | - Amparo Latorre
- grid.484129.2Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
- 0000 0001 2173 938Xgrid.5338.dInstitute for Integrative Systems Biology (I2SysBio), The University of Valencia and The Spanish National Research Council (CSIC)-UVEG, Valencia, Spain
| | - Peter Celec
- 0000000109409708grid.7634.6Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Andrés Moya
- grid.484129.2Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain
- CIBER in Epidemiology and Public Health (CIBEResp), Madrid, Spain
- 0000 0001 2173 938Xgrid.5338.dInstitute for Integrative Systems Biology (I2SysBio), The University of Valencia and The Spanish National Research Council (CSIC)-UVEG, Valencia, Spain
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29
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Clinical and symptom scores are significantly correlated with fecal microbiota features in patients with symptomatic uncomplicated diverticular disease: a pilot study. Eur J Gastroenterol Hepatol 2018; 30:107-112. [PMID: 29084074 DOI: 10.1097/meg.0000000000000995] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND There is growing consensus that symptomatic uncomplicated diverticular disease is a chronic inflammatory condition, and that alterations in the fecal microbiota may contribute to its pathogenesis. OBJECTIVE The aim of this study was to relate the fecal microbiota composition in symptomatic uncomplicated diverticular disease to measures of inflammation, symptoms, and history of previous acute diverticulitis. PARTICIPANTS AND METHODS Fecal microbiota composition in 28 individuals with symptomatic uncomplicated diverticular disease was characterized by 16S RNA gene amplicon sequencing. Microbiota composition was related to clinical history, symptom and inflammation measures, and demographic variables. RESULTS Previous acute diverticulitis was associated with higher relative abundance of Pseudobutyrivibrio, Bifidobacterium, Christensenellaceae family, and Mollicutes RF9 order (P=0.004, 0.006, 0.010, and 0.019, respectively), but not microbiota alpha or beta diversity. A higher bloating severity score was significantly correlated with a higher relative abundance of Ruminococcus (P=0.032), and significantly inversely correlated with the relative abundance of the Roseburia (P=0.002). Fecal calprotectin levels were positively correlated with alpha diversity (Shannon index, P=0.005) and the relative abundance of Lactobacillus (P=0.004). Pain score was positively correlated with the relative abundance of Cyanobacterium (adjusted P=0.032). CONCLUSION Patient symptoms in symptomatic diverticular disease are significantly correlated with features of the fecal microbiota. Our findings suggest the potential utility of therapies that target intestinal microbiology, such as dietary prebiotic supplements.
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30
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Gálvez EJC, Iljazovic A, Gronow A, Flavell R, Strowig T. Shaping of Intestinal Microbiota in Nlrp6- and Rag2-Deficient Mice Depends on Community Structure. Cell Rep 2017; 21:3914-3926. [PMID: 29281837 DOI: 10.1016/j.celrep.2017.12.027] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 11/14/2017] [Accepted: 12/06/2017] [Indexed: 01/05/2023] Open
Abstract
Contradicting observations have been made regarding the relative contributions of immune sensors to shaping the microbiome, yet the reasons for these discrepancies are not fully understood. Here, we investigated the contribution of environmental factors in shaping the microbiome in mice deficient in adaptive immunity (Rag2-/-) and Nlrp6, an immune sensor proposed to be involved in regulation of microbiota composition. In conventionally housed Nlrp6-/- mice, familial transmission has a significant effect on microbiota composition, complicating the analysis of genotype-dependent effects. Notably, after rederivation into standardized specific pathogen-free (SPF) conditions devoid of pathobionts, microbiota composition was indistinguishable between WT, Rag2-/-, and Nlrp6-/- mice. However, upon reintroduction of a pathobiont-containing community host, genotype-dependent differences reappear, specifically affecting the relative abundance of pathobionts such as Helicobacter spp. Our results show that the impact of Nlrp6 and also of adaptive immunity on microbiota composition depends on community structure and primarily influences pathobionts but not commensals.
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Affiliation(s)
- Eric J C Gálvez
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Aida Iljazovic
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Achim Gronow
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Richard Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA; Howard Hughes Medical Institute, Yale University, New Haven, CT 06520, USA
| | - Till Strowig
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany.
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Costabile A, Bergillos-Meca T, Rasinkangas P, Korpela K, de Vos WM, Gibson GR. Effects of Soluble Corn Fiber Alone or in Synbiotic Combination with Lactobacillus rhamnosus GG and the Pilus-Deficient Derivative GG-PB12 on Fecal Microbiota, Metabolism, and Markers of Immune Function: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study in Healthy Elderly (Saimes Study). Front Immunol 2017; 8:1443. [PMID: 29312280 PMCID: PMC5733116 DOI: 10.3389/fimmu.2017.01443] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/17/2017] [Indexed: 12/27/2022] Open
Abstract
Background The aging process leads to a potential decline in immune function and adversely affects the gut microbiota. To date, many in vitro and in vivo studies focused on the application of synbiotics (prebiotics combined with probiotics) as a promising dietary approach to affect gut microbiota composition and improved functioning of the immune system. However, studies using synbiotic preparations often have the limitation that it remains unclear whether any effect observed is a result of the prebiotic or probiotic or a synergistic effect of the combined supplement. Objectives We investigated the effects of a probiotic Lactobacillus rhamnosus GG and pilus-deficient L. rhamnosus GG-PB12 combined with Promitor™ Soluble Corn Fiber (SCF, a candidate prebiotic) on fecal microbiota, metabolism, immunity, and blood lipids in healthy elderly persons. A prospective, double-blind, placebo controlled, randomized, single-centered, crossover study in 40 healthy elderly subjects (aged 60–80 years) was carried out. Volunteers were randomized to consume either probiotic and prebiotic as synbiotic, prebiotic or placebo (maltodextrin) during 3 weeks. Three-week washout periods separated all the treatments. We assessed effects upon blood lipids, glucose, cytokines, natural killer (NK) cell activity, phenotype, and intestinal microbiota composition. SCF decreased IL-6, which was not observed with the synbiotics. Results Consumption of L. rhamnosus GG combined with SCF increased NK cell activity compared to baseline in females and the older group. In the fecal microbiota analyses, the strongest community shifts were due to L. rhamnosus GG combined with SCF and SCF treatments. L. rhamnosus GG combined with SCF and L. rhamnosus GG-PB12 combined with SCF significantly increased the genus Parabacteroides. L. rhamnosus GG combined with SCF and SCF increased concentrations of Ruminococcaceae Incertae Sedis. Oscillospira and Desulfovibrio slightly decreased in the L. rhamnosus GG combined with SCF group, whereas Desulfovibrio decreased also in the L. rhamnosus GG-PB12 combined with SCF group. L. rhamnosus GG combined with SCF reduced total cholesterol and LDL-cholesterol in volunteers with initially elevated concentrations. C-reactive protein significantly decreased during L. rhamnosus GG-PB12 combined with SCF intervention compared to baseline. Conclusion In conclusion, the synbiotic combination of L. rhamnosus GG with SCF showed a tendency to promote innate immunity by increasing NK cell activity in elderly women and in 70 to 80-year-old volunteers and decreased TC and LDL-c in hypercholesterolemic patients. In addition, L. rhamnosus GG-PB12 combined with SCF demonstrated an increase in NK cell activity compared to SCF alone in older volunteers. We also found significant positive effects on the immune response, evidenced by a decrease of the pro-inflammatory cytokine IL-6. Therefore, dietary intervention with L. rhamnosus GG combined with SCF could be of importance in elderly as an attractive option for enhancement of both the microbial and immune systems.
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Affiliation(s)
- Adele Costabile
- Health Sciences Research Centre, Life Sciences Department, Whitelands College, University of Roehampton, London, United Kingdom.,Department of Food and Nutritional Sciences, University of Reading, Reading, United Kingdom
| | - Triana Bergillos-Meca
- Health Sciences Research Centre, Life Sciences Department, Whitelands College, University of Roehampton, London, United Kingdom
| | - Pia Rasinkangas
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Katri Korpela
- Immunobiology Research Program, Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - Willem M de Vos
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.,Immunobiology Research Program, Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland.,Laboratory of Microbiology, Wageningen University, Wageningen, Netherlands
| | - Glenn R Gibson
- Department of Food and Nutritional Sciences, University of Reading, Reading, United Kingdom
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Tamburini S, Shen N, Wu HC, Clemente JC. The microbiome in early life: implications for health outcomes. Nat Med 2017; 22:713-22. [PMID: 27387886 DOI: 10.1038/nm.4142] [Citation(s) in RCA: 718] [Impact Index Per Article: 102.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 06/08/2016] [Indexed: 02/06/2023]
Abstract
Recent studies have characterized how host genetics, prenatal environment and delivery mode can shape the newborn microbiome at birth. Following this, postnatal factors, such as antibiotic treatment, diet or environmental exposure, further modulate the development of the infant's microbiome and immune system, and exposure to a variety of microbial organisms during early life has long been hypothesized to exert a protective effect in the newborn. Furthermore, epidemiological studies have shown that factors that alter bacterial communities in infants during childhood increase the risk for several diseases, highlighting the importance of understanding early-life microbiome composition. In this review, we describe how prenatal and postnatal factors shape the development of both the microbiome and the immune system. We also discuss the prospects of microbiome-mediated therapeutics and the need for more effective approaches that can reconfigure bacterial communities from pathogenic to homeostatic configurations.
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Affiliation(s)
- Sabrina Tamburini
- Icahn Institute for Genomics and Multiscale Biology. Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Nan Shen
- Icahn Institute for Genomics and Multiscale Biology. Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Han Chih Wu
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Medicine, Division of Clinical Immunology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jose C Clemente
- Icahn Institute for Genomics and Multiscale Biology. Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Medicine, Division of Clinical Immunology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Mink (Mustela vison) Gut Microbial Communities from Northeast China and Its Internal Relationship with Gender and Food Additives. Curr Microbiol 2017; 74:1169-1177. [DOI: 10.1007/s00284-017-1301-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/05/2017] [Indexed: 01/26/2023]
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Rojo D, Méndez-García C, Raczkowska BA, Bargiela R, Moya A, Ferrer M, Barbas C. Exploring the human microbiome from multiple perspectives: factors altering its composition and function. FEMS Microbiol Rev 2017; 41:453-478. [PMID: 28333226 PMCID: PMC5812509 DOI: 10.1093/femsre/fuw046] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/15/2016] [Indexed: 02/07/2023] Open
Abstract
Our microbiota presents peculiarities and characteristics that may be altered by multiple factors. The degree and consequences of these alterations depend on the nature, strength and duration of the perturbations as well as the structure and stability of each microbiota. The aim of this review is to sketch a very broad picture of the factors commonly influencing different body sites, and which have been associated with alterations in the human microbiota in terms of composition and function. To do so, first, a graphical representation of bacterial, fungal and archaeal genera reveals possible associations among genera affected by different factors. Then, the revision of sequence-based predictions provides associations with functions that become part of the active metabolism. Finally, examination of microbial metabolite contents and fluxes reveals whether metabolic alterations are a reflection of the differences observed at the level of population structure, and in the last step, link microorganisms to functions under perturbations that differ in nature and aetiology. The utilisation of complementary technologies and methods, with a special focus on metabolomics research, is thoroughly discussed to obtain a global picture of microbiota composition and microbiome function and to convey the urgent need for the standardisation of protocols.
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Affiliation(s)
- David Rojo
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, 28668 Madrid, Spain
| | | | - Beata Anna Raczkowska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, 15-276 Bialystok, Poland
| | - Rafael Bargiela
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
| | - Andrés Moya
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Community Public Health (FISABIO), 46020 Valencia, Spain
- Network Research Center for Epidemiology and Public Health (CIBER-ESP), 28029 Madrid, Spain
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universidad de Valencia, Paterna, 46980 Valencia, Spain
- These authors contributed equally to this work
| | - Manuel Ferrer
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
- Corresponding author: Institute of Catalysis, Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain. Tel: (+34) 915854872; E-mail:
| | - Coral Barbas
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, 28668 Madrid, Spain
- These authors contributed equally to this work
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Ferrer M, Méndez-García C, Rojo D, Barbas C, Moya A. Antibiotic use and microbiome function. Biochem Pharmacol 2017; 134:114-126. [PMID: 27641814 DOI: 10.1016/j.bcp.2016.09.007] [Citation(s) in RCA: 191] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 09/12/2016] [Indexed: 02/06/2023]
Abstract
Our microbiome should be understood as one of the most complex components of the human body. The use of β-lactam antibiotics is one of the microbiome covariates that influence its composition. The extent to which our microbiota changes after an antibiotic intervention depends not only on the chemical nature of the antibiotic or cocktail of antibiotics used to treat specific infections, but also on the type of administration, duration and dose, as well as the level of resistance that each microbiota develops. We have begun to appreciate that not all bacteria within our microbiota are vulnerable or reactive to different antibiotic interventions, and that their influence on both microbial composition and metabolism may differ. Antibiotics are being used worldwide on a huge scale and the prescription of antibiotics is continuing to rise; however, their effects on our microbiota have been reported for only a limited number of them. This article presents a critical review of the antibiotics or antibiotic cocktails whose use in humans has been linked to changes in the composition of our microbial communities, with a particular focus on the gut, oral, respiratory, skin and vaginal microbiota, and on their molecular agents (genes, proteins and metabolites). We review the state of the art as of June 2016, and cover a total of circa 68 different antibiotics. The data herein are the first to compile information about the bacteria, fungi, archaea and viruses most influenced by the main antibiotic treatments prescribed nowadays.
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Affiliation(s)
- Manuel Ferrer
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain.
| | | | - David Rojo
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
| | - Coral Barbas
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
| | - Andrés Moya
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Community Public Health (FISABIO), Valencia, Spain; Network Research Center for Epidemiology and Public Health (CIBER-ESP), Madrid, Spain; Instituto Cavanilles de Biodiversidad y Biología Evolutiva (Universidad de Valencia), Valencia, Spain.
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Tilocca B, Witzig M, Rodehutscord M, Seifert J. Variations of Phosphorous Accessibility Causing Changes in Microbiome Functions in the Gastrointestinal Tract of Chickens. PLoS One 2016; 11:e0164735. [PMID: 27760159 PMCID: PMC5070839 DOI: 10.1371/journal.pone.0164735] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 09/29/2016] [Indexed: 12/11/2022] Open
Abstract
The chicken gastrointestinal tract (GIT) harbours a complex microbial community, involved in several physiological processes such as host immunomodulation and feed digestion. For the first time, the present study analysed dietary effects on the protein inventory of the microbiome in crop and ceca of broilers. We performed quantitative label-free metaproteomics by using 1-D-gel electrophoresis coupled with LC-MS/MS to identify the structural and functional changes triggered by diets supplied with varying amount of mineral phosphorous (P) and microbial phytase (MP). Phylogenetic assessment based on label-free quantification (LFQ) values of the proteins identified Lactobacillaceae as the major family in the crop section regardless of the diet, whereas proteins belonging to the family Veillonellaceae increased with the P supplementation. Within the ceca section, proteins of Bacteroidaceae were more abundant in the P-supplied diets, whereas proteins of Eubacteriaceae decreased with the P-addition. Proteins of the Ruminococcaceae increased with the amount of MP while proteins of Lactobacillaceae were more abundant in the MP-lacking diets. Classification of the identified proteins indicated a thriving microbial community in the case of P and MP supplementation, and stressed microbial community when no P and MP were supplied. Data are available via ProteomeXchange with identifier PXD003805.
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Affiliation(s)
- Bruno Tilocca
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Maren Witzig
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | | | - Jana Seifert
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- * E-mail:
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37
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Rundell SR, Wagar ZL, Meints LM, Olson CD, O'Neill MK, Piligian BF, Poston AW, Hood RJ, Woodruff PJ, Swarts BM. Deoxyfluoro-d-trehalose (FDTre) analogues as potential PET probes for imaging mycobacterial infection. Org Biomol Chem 2016; 14:8598-609. [PMID: 27560008 DOI: 10.1039/c6ob01734g] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Mycobacterium tuberculosis, the etiological agent of human tuberculosis, requires the non-mammalian disaccharide trehalose for growth and virulence. Recently, detectable trehalose analogues have gained attention as probes for studying trehalose metabolism and as potential diagnostic imaging agents for mycobacterial infections. Of particular interest are deoxy-[(18)F]fluoro-d-trehalose ((18)F-FDTre) analogues, which have been suggested as possible positron emission tomography (PET) probes for in vivo imaging of M. tuberculosis infection. Here, we report progress toward this objective, including the synthesis and conformational analysis of four non-radioactive deoxy-[(19)F]fluoro-d-trehalose ((19)F-FDTre) analogues, as well as evaluation of their uptake by M. smegmatis. The rapid synthesis and purification of several (19)F-FDTre analogues was accomplished in high yield using a one-step chemoenzymatic method. Conformational analysis of the (19)F-FDTre analogues using NMR and molecular modeling methods showed that fluorine substitution had a negligible effect on the conformation of the native disaccharide, suggesting that fluorinated analogues may be successfully recognized and processed by trehalose metabolic machinery in mycobacteria. To test this hypothesis and to evaluate a possible route for delivery of FDTre probes specifically to mycobacteria, we showed that (19)F-FDTre analogues are actively imported into M. smegmatis via the trehalose-specific transporter SugABC-LpqY. Finally, to demonstrate the applicability of these results to the efficient preparation and use of short-lived (18)F-FDTre PET radiotracers, we carried out (19)F-FDTre synthesis, purification, and administration to M. smegmatis in 1 hour.
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Affiliation(s)
- Sarah R Rundell
- Department of Chemistry and Biochemistry, Central Michigan University, Mount Pleasant, MI 48859, USA.
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Erkus O, de Jager VC, Geene RT, van Alen-Boerrigter I, Hazelwood L, van Hijum SA, Kleerebezem M, Smid EJ. Use of propidium monoazide for selective profiling of viable microbial cells during Gouda cheese ripening. Int J Food Microbiol 2016; 228:1-9. [DOI: 10.1016/j.ijfoodmicro.2016.03.027] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/22/2016] [Accepted: 03/22/2016] [Indexed: 12/16/2022]
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Treu L, Campanaro S, Kougias PG, Zhu X, Angelidaki I. Untangling the Effect of Fatty Acid Addition at Species Level Revealed Different Transcriptional Responses of the Biogas Microbial Community Members. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:6079-90. [PMID: 27154312 DOI: 10.1021/acs.est.6b00296] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In the present study, RNA-sequencing was used to elucidate the change of anaerobic digestion metatranscriptome after long chain fatty acids (oleate) exposure. To explore the general transcriptional behavior of the microbiome, the analysis was first performed on shotgun reads without considering a reference metagenome. As a second step, RNA reads were aligned on the genes encoded by the microbial community, revealing the expression of more than 51 000 different transcripts. The present study is the first research which was able to dissect the transcriptional behavior at a single species level by considering the 106 microbial genomes previously identified. The exploration of the metabolic pathways confirmed the importance of Syntrophomonas species in fatty acids degradation, and also highlighted the presence of protective mechanisms toward the long chain fatty acid effects in bacteria belonging to Clostridiales, Rykenellaceae, and in species of the genera Halothermothrix and Anaerobaculum. Additionally, an interesting transcriptional activation of the chemotaxis genes was evidenced in seven species belonging to Clostridia, Halothermothrix, and Tepidanaerobacter. Surprisingly, methanogens revealed a very versatile behavior different from each other, even among similar species of the Methanoculleus genus, while a strong increase of the expression level in Methanosarcina sp. was evidenced after oleate addition.
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Affiliation(s)
- Laura Treu
- Department of Environmental Engineering, Technical University of Denmark , 2800 Kgs. Lyngby, Denmark
- Department of Agronomy Food Natural Resources Animals and Environment (DAFNAE), University of Padova , Viale dell'Università 16, Legnaro, PD 35020, Italy
| | - Stefano Campanaro
- Department of Biology, University of Padova , Via U. Bassi 58/b, 35121, Padova Italy
| | - Panagiotis G Kougias
- Department of Environmental Engineering, Technical University of Denmark , 2800 Kgs. Lyngby, Denmark
| | - Xinyu Zhu
- Department of Environmental Engineering, Technical University of Denmark , 2800 Kgs. Lyngby, Denmark
| | - Irini Angelidaki
- Department of Environmental Engineering, Technical University of Denmark , 2800 Kgs. Lyngby, Denmark
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Active and Secretory IgA-Coated Bacterial Fractions Elucidate Dysbiosis in Clostridium difficile Infection. mSphere 2016; 1:mSphere00101-16. [PMID: 27303742 PMCID: PMC4888886 DOI: 10.1128/msphere.00101-16] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/03/2016] [Indexed: 12/18/2022] Open
Abstract
C. difficile is a major enteric pathogen with worldwide distribution. Its expansion is associated with broad-spectrum antibiotics which disturb the normal gut microbiome. In this study, the DNA sequencing of highly active bacteria and bacteria opsonized by intestinal secretory immunoglobulin A (SIgA) separated from the whole bacterial community by FACS elucidated how the gut dysbiosis promotes C. difficile infection (CDI). Bacterial groups with inhibitory effects on C. difficile growth, such as Lactobacillales, were mostly inactive in the CDI patients. C. difficile was typical for the bacterial fraction opsonized by SIgA in patients with CDI, while Fusobacterium was characteristic for the SIgA-opsonized fraction of the controls. The study demonstrates that sequencing of specific bacterial fractions provides additional information about dysbiotic processes in the gut. The detected patterns have been confirmed with the whole patient cohort independently of the taxonomic differences detected in the nonfractionated microbiomes. The onset of Clostridium difficile infection (CDI) has been associated with treatment with wide-spectrum antibiotics. Antibiotic treatment alters the activity of gut commensals and may result in modified patterns of immune responses to pathogens. To study these mechanisms during CDI, we separated bacteria with high cellular RNA content (the active bacteria) and their inactive counterparts by fluorescence-activated cell sorting (FACS) of the fecal bacterial suspension. The gut dysbiosis due to the antibiotic treatment may result in modification of immune recognition of intestinal bacteria. The immune recognition patterns were assessed by FACS of bacterial fractions either coated or not with intestinal secretory immunoglobulin A (SIgA). We described the taxonomic distributions of these four bacterial fractions (active versus inactive and SIgA coated versus non-SIgA coated) by massive 16S rRNA gene amplicon sequencing and quantified the proportion of C. difficile toxin genes in the samples. The overall gut microbiome composition was more robustly influenced by antibiotics than by the C. difficile toxins. Bayesian networks revealed that the C. difficile cluster was preferentially SIgA coated during CDI. In contrast, in the CDI-negative group Fusobacterium was the characteristic genus of the SIgA-opsonized fraction. Lactobacillales and Clostridium cluster IV were mostly inactive in CDI-positive patients. In conclusion, although the proportion of C. difficile in the gut is very low, it is able to initiate infection during the gut dysbiosis caused by environmental stress (antibiotic treatment) as a consequence of decreased activity of the protective bacteria. IMPORTANCEC. difficile is a major enteric pathogen with worldwide distribution. Its expansion is associated with broad-spectrum antibiotics which disturb the normal gut microbiome. In this study, the DNA sequencing of highly active bacteria and bacteria opsonized by intestinal secretory immunoglobulin A (SIgA) separated from the whole bacterial community by FACS elucidated how the gut dysbiosis promotes C. difficile infection (CDI). Bacterial groups with inhibitory effects on C. difficile growth, such as Lactobacillales, were mostly inactive in the CDI patients. C. difficile was typical for the bacterial fraction opsonized by SIgA in patients with CDI, while Fusobacterium was characteristic for the SIgA-opsonized fraction of the controls. The study demonstrates that sequencing of specific bacterial fractions provides additional information about dysbiotic processes in the gut. The detected patterns have been confirmed with the whole patient cohort independently of the taxonomic differences detected in the nonfractionated microbiomes.
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Effects of Guchang Capsule on Dextran Sulphate Sodium-Induced Experimental Ulcerative Colitis in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:3150651. [PMID: 27313642 PMCID: PMC4894999 DOI: 10.1155/2016/3150651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/01/2016] [Accepted: 05/05/2016] [Indexed: 12/22/2022]
Abstract
Guchang capsule (GC) is a Chinese materia medica standardized product extracted from 15 Chinese traditional medical herbs and it has been clinically used in the treatment of intestinal disease. In this study, in order to extend the research of GC in intestinal disease, we were aiming to evaluate potential effects of GC on dextran sulphate sodium- (DSS-) induced murine experimental colitis and to elucidate the underlying mechanisms. GC treatment attenuated DSS-induced body weight loss and reduced the mortality. Moreover, GC treatment prevented DSS-induced colonic pathological damage; meanwhile it inhibited proinflammatory cytokines production in colon tissues. In vitro, GC significantly reduced LPS-induced proinflammatory cytokines production via inhibiting the activation of NF-κB in macrophage cells, and the expressions of several long noncoding RNAs (lncRNAs) which were reported in regulating NF-κB signaling pathway were obviously affected by adding GC into culture medium. In conclusion, our data suggested that administration of GC exhibits therapeutic effects on DSS-induced colitis partially through regulating the expression of NF-κB related lncRNAs in infiltrating immune cells.
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Klein AM, Bohannan BJM, Jaffe DA, Levin DA, Green JL. Molecular Evidence for Metabolically Active Bacteria in the Atmosphere. Front Microbiol 2016; 7:772. [PMID: 27252689 PMCID: PMC4878314 DOI: 10.3389/fmicb.2016.00772] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/09/2016] [Indexed: 01/02/2023] Open
Abstract
Bacterial metabolisms are responsible for critical chemical transformations in nearly all environments, including oceans, freshwater, and soil. Despite the ubiquity of bacteria in the atmosphere, little is known about the metabolic functioning of atmospheric bacterial communities. To gain a better understanding of the metabolism of bacterial communities in the atmosphere, we used a combined empirical and model-based approach to investigate the structure and composition of potentially active bacterial communities in air sampled at a high elevation research station. We found that the composition of the putatively active bacterial community (assayed via rRNA) differed significantly from the total bacterial community (assayed via rDNA). Rare taxa in the total (rDNA) community were disproportionately active relative to abundant taxa, and members of the order Rhodospirillales had the highest potential for activity. We developed theory to explore the effects of random sampling from the rRNA and rDNA communities on observed differences between the communities. We found that random sampling, particularly in cases where active taxa are rare in the rDNA community, will give rise to observed differences in community composition including the occurrence of “phantom taxa”, taxa which are detected in the rRNA community but not the rDNA community. We show that the use of comparative rRNA/rDNA techniques can reveal the structure and composition of the metabolically active portion of bacterial communities. Our observations suggest that metabolically active bacteria exist in the atmosphere and that these communities may be involved in the cycling of organic compounds in the atmosphere.
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Affiliation(s)
- Ann M Klein
- Institute of Ecology and Evolution, Department of Biology, University of Oregon, Eugene, OR USA
| | - Brendan J M Bohannan
- Institute of Ecology and Evolution, Department of Biology, University of Oregon, Eugene, OR USA
| | - Daniel A Jaffe
- Department of Atmospheric Sciences, University of Washington Bothell, Bothell, WA USA
| | - David A Levin
- Department of Mathematics, University of Oregon, Eugene, OR USA
| | - Jessica L Green
- Institute of Ecology and Evolution, Department of Biology, University of Oregon, Eugene, ORUSA; Santa Fe Institute, Santa Fe, NMUSA
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Bhute S, Pande P, Shetty SA, Shelar R, Mane S, Kumbhare SV, Gawali A, Makhani H, Navandar M, Dhotre D, Lubree H, Agarwal D, Patil R, Ozarkar S, Ghaskadbi S, Yajnik C, Juvekar S, Makharia GK, Shouche YS. Molecular Characterization and Meta-Analysis of Gut Microbial Communities Illustrate Enrichment of Prevotella and Megasphaera in Indian Subjects. Front Microbiol 2016; 7:660. [PMID: 27242691 PMCID: PMC4860526 DOI: 10.3389/fmicb.2016.00660] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 04/21/2016] [Indexed: 12/30/2022] Open
Abstract
The gut microbiome has varied impact on the wellbeing of humans. It is influenced by different factors such as age, dietary habits, socio-economic status, geographic location, and genetic makeup of individuals. For devising microbiome-based therapies, it is crucial to identify population specific features of the gut microbiome. Indian population is one of the most ethnically, culturally, and geographically diverse, but the gut microbiome features remain largely unknown. The present study describes gut microbial communities of healthy Indian subjects and compares it with the microbiota from other populations. Based on large differences in alpha diversity indices, abundance of 11 bacterial phyla and individual specific OTUs, we report inter-individual variations in gut microbial communities of these subjects. While the gut microbiome of Indians is different from that of Americans, it shared high similarity to individuals from the Indian subcontinent i.e., Bangladeshi. Distinctive feature of Indian gut microbiota is the predominance of genus Prevotella and Megasphaera. Further, when compared with other non-human primates, it appears that Indians share more OTUs with omnivorous mammals. Our metagenomic imputation indicates higher potential for glycan biosynthesis and xenobiotic metabolism in these subjects. Our study indicates urgent need of identification of population specific microbiome biomarkers of Indian subpopulations to have more holistic view of the Indian gut microbiome and its health implications.
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Affiliation(s)
- Shrikant Bhute
- Department of Zoology, Savitribai Phule Pune University Pune, India
| | - Pranav Pande
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Sudarshan A Shetty
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Rahul Shelar
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Sachin Mane
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Shreyas V Kumbhare
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Ashwini Gawali
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Hemal Makhani
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Mohit Navandar
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | - Dhiraj Dhotre
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
| | | | - Dhiraj Agarwal
- Vadu Rural Health Program, KEM Hospital Research Centre Pune, India
| | - Rutuja Patil
- Vadu Rural Health Program, KEM Hospital Research Centre Pune, India
| | - Shantanu Ozarkar
- Department of Anthropology, Savitribai Phule Pune University Pune, India
| | - Saroj Ghaskadbi
- Department of Zoology, Savitribai Phule Pune University Pune, India
| | | | - Sanjay Juvekar
- Vadu Rural Health Program, KEM Hospital Research Centre Pune, India
| | - Govind K Makharia
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences New Delhi, India
| | - Yogesh S Shouche
- Microbial Culture Collection, National Centre for Cell Sciences, Savitribai Phule Pune University campus Pune, India
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44
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Quartieri A, Simone M, Gozzoli C, Popovic M, D'Auria G, Amaretti A, Raimondi S, Rossi M. Comparison of culture-dependent and independent approaches to characterize fecal bifidobacteria and lactobacilli. Anaerobe 2016; 38:130-137. [DOI: 10.1016/j.anaerobe.2015.10.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/30/2015] [Accepted: 10/02/2015] [Indexed: 01/15/2023]
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45
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Stanisavljević S, Lukić J, Soković S, Mihajlovic S, Mostarica Stojković M, Miljković D, Golić N. Correlation of Gut Microbiota Composition with Resistance to Experimental Autoimmune Encephalomyelitis in Rats. Front Microbiol 2016; 7:2005. [PMID: 28018327 PMCID: PMC5156687 DOI: 10.3389/fmicb.2016.02005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 11/30/2016] [Indexed: 12/28/2022] Open
Abstract
Multiple sclerosis is a chronic inflammatory disease of the central nervous system (CNS). It is widely accepted that autoimmune response against the antigens of the CNS is the essential pathogenic force in the disease. It has recently become increasingly appreciated that activated encephalitogenic cells tend to migrate toward gut associated lymphoid tissues (GALTs) and that interrupted balance between regulatory and inflammatory immunity within the GALT might have decisive role in the initiation and propagation of the CNS autoimmunity. Gut microbiota composition and function has the major impact on the balance in the GALT. Thus, our aim was to perform analyses of gut microbiota in experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis. Albino Oxford (AO) rats that are highly resistant to EAE induction and Dark Agouti (DA) rats that develop EAE after mild immunization were compared for gut microbiota composition in different phases after EAE induction. Microbial analyses of the genus Lactobacillus and related lactic acid bacteria showed higher diversity of Lactobacillus spp. in EAE-resistant AO rats, while some members of Firmicutes and Proteobacteria (Undibacterium oligocarboniphilum) were detected only in feces of DA rats at the peak of the disease (between 13 and 16 days after induction). Interestingly, in contrast to our previous study where Turicibacter sp. was found exclusively in non-immunized AO, but not in DA rats, in this study it was detected in DA rats that remained healthy 16 days after induction, as well as in four of 12 DA rats at the peak of the disease. Similar observation was obtained for the members of Lachnospiraceae. Further, production of a typical regulatory cytokine interleukin-10 was compared in GALT cells of AO and DA rats, and higher production was observed in DA rats. Our data contribute to the idea that gut microbiota and GALT considerably influence multiple sclerosis pathogenesis.
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Affiliation(s)
- Suzana Stanisavljević
- Department of Immunology, Institute for Biological Research “Siniša Stanković," University of BelgradeBelgrade, Serbia
| | - Jovanka Lukić
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of BelgradeBelgrade, Serbia
| | - Svetlana Soković
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of BelgradeBelgrade, Serbia
| | - Sanja Mihajlovic
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of BelgradeBelgrade, Serbia
| | | | - Djordje Miljković
- Department of Immunology, Institute for Biological Research “Siniša Stanković," University of BelgradeBelgrade, Serbia
- *Correspondence: Djordje Miljković, Natasa Golić,
| | - Natasa Golić
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of BelgradeBelgrade, Serbia
- *Correspondence: Djordje Miljković, Natasa Golić,
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46
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Mudroňová D. Flow cytometry as an auxiliary tool for the selection of probiotic bacteria. Benef Microbes 2015; 6:727-34. [DOI: 10.3920/bm2014.0145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Selection of appropriate bacterial strains is crucial for development of new probiotic preparations. The fundamental prerequisite for potential efficacy of a probiotic preparation for oral application is the selection of appropriate bacterial strains with good gastrointestinal colonisation abilities, antimicrobial activity, and tolerance of conditions in the gastrointestinal tract, resistance to different antimicrobial agents, survival during processing and storage. The strain should be genetically stable, it should have good growth properties, to maintain its high viability at processing and when in storage. Mostly, the properties of promising strains are tested in the first phase in vitro, and only the best ones undergo subsequent in vivo testing. in vitro tests are often performed by classical microbiological cultivation methods which are material and time consuming, and they are not able to distinguish between ‘viable but nonculturable’ and dead bacteria. Flow cytometry is usually used for counting, phenotyping or functional characterisation of immune cells. Nowadays, flow cytometry is increasingly used in microbiology for counting bacteria, determining their viability and metabolic activity, detecting specific strains or testing their adherence abilities. The utilisation of flow cytometry in combination with an appropriate fluorescent labelling represents an effective and rapid method for the selection of probiotic bacteria.
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Affiliation(s)
- D. Mudroňová
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 73, 04181 Košice, Slovakia
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Heinsen FA, Knecht H, Neulinger SC, Schmitz RA, Knecht C, Kühbacher T, Rosenstiel PC, Schreiber S, Friedrichs AK, Ott SJ. Dynamic changes of the luminal and mucosa-associated gut microbiota during and after antibiotic therapy with paromomycin. Gut Microbes 2015; 6:243-54. [PMID: 26178862 PMCID: PMC4615565 DOI: 10.1080/19490976.2015.1062959] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Gut microbiota play a key role in the host's health system. Broad antibiotic therapy is known to disrupt the microbial balance affecting pathogenic as well as host-associated microbes. The aim of the present study was to investigate the influence of antibiotic paromomycin on the luminal and mucosa-associated microbiota at the DNA (abundance) and RNA (potential activity) level as well as to identify possible differences. The influence of antibiotic treatment on intestinal microbiota was investigated in 5 healthy individuals (age range: 20-22 years). All participants received the antibiotic paromomycin for 3 d. Fecal samples as well as sigmoidal biopsies were collected before and immediately after cessation of antibiotic treatment as well as after a recovery phase of 42 d. Compartment- and treatment status-specific indicator operational taxonomic units (OTUs) as well as abundance- and activity-specific patterns were identified by 16S rRNA and 16S rRNA gene amplicon libraries and high-throughput pyrosequencing. Microbial composition of lumen and mucosa were significantly different at the DNA compared to the RNA level. Antibiotic treatment resulted in changes of the microbiota, affecting the luminal and mucosal bacteria in a similar way. Several OTUs were identified as compartment- and/or treatment status-specific. Abundance and activity patterns of some indicator OTUs differed considerably. The study shows fundamental changes in composition of gut microbiota under antibiotic therapy at both the potential activity and the abundance level at different treatment status. It may help to understand the complex processes of gut microbiota changes involved in resilience mechanisms and on development of antibiotic-associated clinical diseases.
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Affiliation(s)
- Femke-Anouska Heinsen
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany
| | - Henrik Knecht
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany
| | - Sven C Neulinger
- Institute for General Microbiology (IFAM); CAU Kiel; Kiel, Germany
| | - Ruth A Schmitz
- Institute for General Microbiology (IFAM); CAU Kiel; Kiel, Germany
| | - Carolin Knecht
- Institute of Medical Informatics and Statistics (IMIS); CAU Kiel; Kiel, Germany
| | - Tanja Kühbacher
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany,Department of Internal Medicine I; University Hospital Schleswig-Holstein (UKSH); Campus Kiel; Kiel, Germany
| | - Philip C Rosenstiel
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany,Department of Internal Medicine I; University Hospital Schleswig-Holstein (UKSH); Campus Kiel; Kiel, Germany
| | - Stefan Schreiber
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany,Department of Internal Medicine I; University Hospital Schleswig-Holstein (UKSH); Campus Kiel; Kiel, Germany
| | - Anette K Friedrichs
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany,Department of Internal Medicine I; University Hospital Schleswig-Holstein (UKSH); Campus Kiel; Kiel, Germany
| | - Stephan J Ott
- Institute of Clinical Molecular Biology (ICMB); Christian-Albrechts-University (CAU) Kiel; Kiel, Germany,Department of Internal Medicine I; University Hospital Schleswig-Holstein (UKSH); Campus Kiel; Kiel, Germany,Corresponding author: Stephan J Ott; E-mail:
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48
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Simón-Soro Á, D'Auria G, Collado MC, Džunková M, Culshaw S, Mira A. Revealing microbial recognition by specific antibodies. BMC Microbiol 2015; 15:132. [PMID: 26134992 PMCID: PMC4489363 DOI: 10.1186/s12866-015-0456-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 05/29/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Recognition of microorganisms by antibodies is a vital component of the human immune response. However, there is currently very limited understanding of immune recognition of 50 % of the human microbiome which is made up of as yet un-culturable bacteria. We have combined the use of flow cytometry and pyrosequencing to describe the microbial composition of human samples, and its interaction with the immune system. RESULTS We show the power of the technique in human faecal, saliva, oral biofilm and breast milk samples, labeled with fluorescent anti-IgG or anti-IgA antibodies. Using Fluorescence-Activated Cell Sorting (FACS), bacterial cells were separated depending on whether they are coated with IgA or IgG antibodies. Each bacterial population was PCR-amplified and pyrosequenced, characterizing the microorganisms which evade the immune system and those which were recognized by each immunoglobulin. CONCLUSIONS The application of the technique to healthy and diseased individuals may unravel the contribution of the immune response to microbial infections and polymicrobial diseases.
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Affiliation(s)
- Áurea Simón-Soro
- Department of Health and Genomics, FISABIO Foundation, Center for Advanced Research in Public Health, Avda. Cataluña 21, 46020, Valencia, Spain.
| | - Giuseppe D'Auria
- Department of Health and Genomics, FISABIO Foundation, Center for Advanced Research in Public Health, Avda. Cataluña 21, 46020, Valencia, Spain.
| | - M Carmen Collado
- The Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), 46980, Valencia, Spain.
| | - Mária Džunková
- Department of Health and Genomics, FISABIO Foundation, Center for Advanced Research in Public Health, Avda. Cataluña 21, 46020, Valencia, Spain.
| | - Shauna Culshaw
- Infection and Immunity Research Group, Glasgow Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Scotland, UK.
| | - Alex Mira
- Department of Health and Genomics, FISABIO Foundation, Center for Advanced Research in Public Health, Avda. Cataluña 21, 46020, Valencia, Spain.
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Costa M, Silva G, Ramos R, Staempfli H, Arroyo L, Kim P, Weese J. Characterization and comparison of the bacterial microbiota in different gastrointestinal tract compartments in horses. Vet J 2015; 205:74-80. [DOI: 10.1016/j.tvjl.2015.03.018] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 03/18/2015] [Accepted: 03/19/2015] [Indexed: 01/31/2023]
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50
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Orally administrated Lactobacillus pentosus var. plantarum C29 ameliorates age-dependent colitis by inhibiting the nuclear factor-kappa B signaling pathway via the regulation of lipopolysaccharide production by gut microbiota. PLoS One 2015; 10:e0116533. [PMID: 25689583 PMCID: PMC4331539 DOI: 10.1371/journal.pone.0116533] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/10/2014] [Indexed: 11/19/2022] Open
Abstract
To evaluate the anti-inflammaging effect of lactic acid bacteria (LAB) on age-dependent inflammation, we first screened and selected a tumor necrosis factor (TNF)-α and reactive oxygen species (ROS)-inhibitory LAB, Lactobacillus pentosus var. plantarum C29, among the LABs isolated from fermented vegetables using LPS-stimulated mouse peritoneal macrophages. Oral administration of C29 (2 × 109 CFU/rat) for 8 weeks in aged Fischer 344 rats (age, 16 months) inhibited the expression of the inflammatory markers myeloperoxidase, inducible nitric oxide (NO) synthase, cyclooxygenase-2, pro-inflammatory cytokines tumor necrosis factor (TNF)-α and IL-6 and the activation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), activator protein 1 (AP1), and mitogen-activated protein kinases (MAPKs). Treatment with C29 induced the expression of tight junction proteins ZO-1, occludin, and claudin-1, and reduced intestinal microbial LPS and plasmatic LPS levels and ROS, as well as the Firmicutes to Bacteroidetes ratio, which is significantly higher in aged rats than in young rats. C29 treatment also reduced plasmatic reactive oxygen species, malondialdehyde, C-reactive protein, and TNF-α, and suppressed expression of senescence markers p16 and p53 in the colon of the aged rats, but increased SIRT 1 expression. Based on these findings, we concluded that C29 treatment may suppress aging-dependent colitis by inhibiting NF-κB, AP1, and MAPK activation via the inhibition of gut microbiota LPS production and the induction of tight junction protein expression.
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