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Dasari MR, Roche KE, Jansen D, Anderson J, Alberts SC, Tung J, Gilbert JA, Blekhman R, Mukherjee S, Archie EA. Social and environmental predictors of gut microbiome age in wild baboons. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.02.605707. [PMID: 39131274 PMCID: PMC11312535 DOI: 10.1101/2024.08.02.605707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Understanding why some individuals age faster than others is essential to evolutionary biology and geroscience, but measuring variation in biological age is difficult. One solution may lie in measuring gut microbiome composition because microbiota change with many age-related factors (e.g., immunity and behavior). Here we create a microbiome-based age predictor using 13,563 gut microbial profiles from 479 wild baboons collected over 14 years. The resulting "microbiome clock" predicts host chronological age. Deviations from the clock's predictions are linked to demographic and socio-environmental factors that predict baboon health and survival: animals who appear old-for-age tend to be male, sampled in the dry season (for females), and high social status (both sexes). However, an individual's "microbiome age" does not predict the attainment of developmental milestones or lifespan. Hence, the microbiome clock accurately reflects age and some social and environmental conditions, but not the pace of development or mortality risk.
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Affiliation(s)
- Mauna R. Dasari
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
- California Academy of Sciences, San Francisco, CA, USA
| | - Kimberly E. Roche
- Program in Computational Biology and Bioinformatics, Duke University, Durham, NC, USA
| | - David Jansen
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - Jordan Anderson
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
| | - Susan C. Alberts
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Department of Biology, Duke University, Durham, NC, USA
- Duke University Population Research Institute, Duke University, Durham, NC, USA
| | - Jenny Tung
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Department of Biology, Duke University, Durham, NC, USA
- Duke University Population Research Institute, Duke University, Durham, NC, USA
- Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
- Canadian Institute for Advanced Research, Toronto, Ontario, Canada
- Faculty of Life Sciences, Institute of Biology, Leipzig University, Leipzig, Germany
| | - Jack A. Gilbert
- Department of Pediatrics and the Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA, USA
| | - Ran Blekhman
- Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, IL, USA
| | - Sayan Mukherjee
- Departments of Statistical Science, Mathematics, Computer Science, and Bioinformatics & Biostatistics, Duke University, Durham, NC, USA
- Center for Scalable Data Analytics and Artificial Intelligence, University of Leipzig, Leipzig Germany
- Max Planck Institute for Mathematics in the Natural Sciences, Leipzig, Germany
| | - Elizabeth A. Archie
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
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Liddelow SA, Olsen ML, Sofroniew MV. Reactive Astrocytes and Emerging Roles in Central Nervous System (CNS) Disorders. Cold Spring Harb Perspect Biol 2024; 16:a041356. [PMID: 38316554 PMCID: PMC11216178 DOI: 10.1101/cshperspect.a041356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
In addition to their many functions in the healthy central nervous system (CNS), astrocytes respond to CNS damage and disease through a process called "reactivity." Recent evidence reveals that astrocyte reactivity is a heterogeneous spectrum of potential changes that occur in a context-specific manner. These changes are determined by diverse signaling events and vary not only with the nature and severity of different CNS insults but also with location in the CNS, genetic predispositions, age, and potentially also with "molecular memory" of previous reactivity events. Astrocyte reactivity can be associated with both essential beneficial functions as well as with harmful effects. The available information is rapidly expanding and much has been learned about molecular diversity of astrocyte reactivity. Emerging functional associations point toward central roles for astrocyte reactivity in determining the outcome in CNS disorders.
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Affiliation(s)
- Shane A Liddelow
- Neuroscience Institute, NYU School of Medicine, New York, New York 10016, USA
- Department of Neuroscience and Physiology, NYU School of Medicine, New York, New York 10016, USA
- Department of Ophthalmology, NYU School of Medicine, New York, New York 10016, USA
| | - Michelle L Olsen
- School of Neuroscience, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Michael V Sofroniew
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, California 90095, USA
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3
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Ioachimescu OC. State of the art: Alternative overlap syndrome-asthma and obstructive sleep apnea. J Investig Med 2024:10815589241249993. [PMID: 38715213 DOI: 10.1177/10815589241249993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
In the general population, Bronchial Asthma (BA) and Obstructive Sleep Apnea (OSA) are among the most prevalent chronic respiratory disorders. Significant epidemiologic connections and complex pathogenetic pathways link these disorders via complex interactions at genetic, epigenetic, and environmental levels. The coexistence of BA and OSA in an individual likely represents a distinct syndrome, that is, a collection of clinical manifestations attributable to several mechanisms and pathobiological signatures. To avoid terminological confusion, this association has been named alternative overlap syndrome (vs overlap syndrome represented by the chronic obstructive pulmonary disease-OSA association). This comprehensive review summarizes the complex, often bidirectional links between the constituents of the alternative overlap syndrome. Cross-sectional, population, or clinic-based studies are unlikely to elucidate causality or directionality in these relationships. Even longitudinal epidemiological evaluations in BA cohorts developing over time OSA, or OSA cohorts developing BA during follow-up cannot exclude time factors or causal influence of other known or unknown mediators. As such, a lot of pathophysiological interactions described here have suggestive evidence, biological plausibility, potential or actual directionality. By showcasing existing evidence and current knowledge gaps, the hope is that deliberate, focused, and collaborative efforts in the near-future will be geared toward opportunities to shine light on the unknowns and accelerate discovery in this field of health, clinical care, education, research, and scholarly endeavors.
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Roth-Walter F, Adcock IM, Benito-Villalvilla C, Bianchini R, Bjermer L, Caramori G, Cari L, Chung KF, Diamant Z, Eguiluz-Gracia I, Knol EF, Jesenak M, Levi-Schaffer F, Nocentini G, O'Mahony L, Palomares O, Redegeld F, Sokolowska M, Van Esch BCAM, Stellato C. Metabolic pathways in immune senescence and inflammaging: Novel therapeutic strategy for chronic inflammatory lung diseases. An EAACI position paper from the Task Force for Immunopharmacology. Allergy 2024; 79:1089-1122. [PMID: 38108546 DOI: 10.1111/all.15977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 12/19/2023]
Abstract
The accumulation of senescent cells drives inflammaging and increases morbidity of chronic inflammatory lung diseases. Immune responses are built upon dynamic changes in cell metabolism that supply energy and substrates for cell proliferation, differentiation, and activation. Metabolic changes imposed by environmental stress and inflammation on immune cells and tissue microenvironment are thus chiefly involved in the pathophysiology of allergic and other immune-driven diseases. Altered cell metabolism is also a hallmark of cell senescence, a condition characterized by loss of proliferative activity in cells that remain metabolically active. Accelerated senescence can be triggered by acute or chronic stress and inflammatory responses. In contrast, replicative senescence occurs as part of the physiological aging process and has protective roles in cancer surveillance and wound healing. Importantly, cell senescence can also change or hamper response to diverse therapeutic treatments. Understanding the metabolic pathways of senescence in immune and structural cells is therefore critical to detect, prevent, or revert detrimental aspects of senescence-related immunopathology, by developing specific diagnostics and targeted therapies. In this paper, we review the main changes and metabolic alterations occurring in senescent immune cells (macrophages, B cells, T cells). Subsequently, we present the metabolic footprints described in translational studies in patients with chronic asthma and chronic obstructive pulmonary disease (COPD), and review the ongoing preclinical studies and clinical trials of therapeutic approaches aiming at targeting metabolic pathways to antagonize pathological senescence. Because this is a recently emerging field in allergy and clinical immunology, a better understanding of the metabolic profile of the complex landscape of cell senescence is needed. The progress achieved so far is already providing opportunities for new therapies, as well as for strategies aimed at disease prevention and supporting healthy aging.
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Affiliation(s)
- F Roth-Walter
- Comparative Medicine, The Interuniversity Messerli Research Institute of the University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - I M Adcock
- Molecular Cell Biology Group, National Heart & Lung Institute, Imperial College London, London, UK
| | - C Benito-Villalvilla
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - R Bianchini
- Comparative Medicine, The Interuniversity Messerli Research Institute of the University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
| | - L Bjermer
- Department of Respiratory Medicine and Allergology, Lung and Allergy research, Allergy, Asthma and COPD Competence Center, Lund University, Lund, Sweden
| | - G Caramori
- Department of Medicine and Surgery, University of Parma, Pneumologia, Italy
| | - L Cari
- Department of Medicine, Section of Pharmacology, University of Perugia, Perugia, Italy
| | - K F Chung
- Experimental Studies Medicine at National Heart & Lung Institute, Imperial College London & Royal Brompton & Harefield Hospital, London, UK
| | - Z Diamant
- Department of Respiratory Medicine and Allergology, Institute for Clinical Science, Skane University Hospital, Lund, Sweden
- Department of Respiratory Medicine, First Faculty of Medicine, Charles University and Thomayer Hospital, Prague, Czech Republic
- Department of Clinical Pharmacy & Pharmacology, University Groningen, University Medical Center Groningen and QPS-NL, Groningen, The Netherlands
| | - I Eguiluz-Gracia
- Allergy Unit, Hospital Regional Universitario de Málaga-Instituto de Investigación Biomédica de Málaga (IBIMA)-ARADyAL, Málaga, Spain
| | - E F Knol
- Departments of Center of Translational Immunology and Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - M Jesenak
- Department of Paediatrics, Department of Pulmonology and Phthisiology, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, University Teaching Hospital, Martin, Slovakia
| | - F Levi-Schaffer
- Institute for Drug Research, Pharmacology Unit, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - G Nocentini
- Department of Medicine, Section of Pharmacology, University of Perugia, Perugia, Italy
| | - L O'Mahony
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Medicine, University College Cork, Cork, Ireland
- School of Microbiology, University College Cork, Cork, Ireland
| | - O Palomares
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - F Redegeld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - M Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
- Christine Kühne - Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - B C A M Van Esch
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - C Stellato
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, Italy
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Park S, Laskow TC, Chen J, Guha P, Dawn B, Kim D. Microphysiological systems for human aging research. Aging Cell 2024; 23:e14070. [PMID: 38180277 PMCID: PMC10928588 DOI: 10.1111/acel.14070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 01/06/2024] Open
Abstract
Recent advances in microphysiological systems (MPS), also known as organs-on-a-chip (OoC), enable the recapitulation of more complex organ and tissue functions on a smaller scale in vitro. MPS therefore provide the potential to better understand human diseases and physiology. To date, numerous MPS platforms have been developed for various tissues and organs, including the heart, liver, kidney, blood vessels, muscle, and adipose tissue. However, only a few studies have explored using MPS platforms to unravel the effects of aging on human physiology and the pathogenesis of age-related diseases. Age is one of the risk factors for many diseases, and enormous interest has been devoted to aging research. As such, a human MPS aging model could provide a more predictive tool to understand the molecular and cellular mechanisms underlying human aging and age-related diseases. These models can also be used to evaluate preclinical drugs for age-related diseases and translate them into clinical settings. Here, we provide a review on the application of MPS in aging research. First, we offer an overview of the molecular, cellular, and physiological changes with age in several tissues or organs. Next, we discuss previous aging models and the current state of MPS for studying human aging and age-related conditions. Lastly, we address the limitations of current MPS and present future directions on the potential of MPS platforms for human aging research.
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Affiliation(s)
- Seungman Park
- Department of Mechanical EngineeringUniversity of Nevada, Las VegasLas VegasNevadaUSA
| | - Thomas C. Laskow
- Department of MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Jingchun Chen
- Nevada Institute of Personalized MedicineUniversity of Nevada, Las VegasLas VegasNevadaUSA
| | - Prasun Guha
- Nevada Institute of Personalized MedicineUniversity of Nevada, Las VegasLas VegasNevadaUSA
- School of Life SciencesUniversity of Nevada, Las VegasLas VegasNevadaUSA
| | - Buddhadeb Dawn
- Department of Internal Medicine, Kirk Kerkorian School of MedicineUniversity of Nevada, Las VegasLas VegasNevadaUSA
| | - Deok‐Ho Kim
- Department of MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Biomedical EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Center for Microphysiological SystemsJohns Hopkins UniversityBaltimoreMarylandUSA
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Chen M, Che Y, Liu M, Xiao X, Zhong L, Zhao S, Zhang X, Chen A, Guo J. Genetic insights into the gut microbiota and risk of facial skin aging: A Mendelian randomization study. Skin Res Technol 2024; 30:e13636. [PMID: 38424726 PMCID: PMC10904881 DOI: 10.1111/srt.13636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND A growing number of experimental studies have shown an association between the gut microbiota (GM) and facial skin aging. However, the causal relationship between GM and facial skin aging remains unclear to date. METHODS We conducted a two-sample Mendelian randomization (MR) analysis to investigate the potential causal relationship between GM and facial skin aging. MR analysis was mainly performed using the inverse-variance weighting (IVW) method, complemented by the weighted median (MW) method, MR-Egger regression, and weighted mode, and sensitivity analysis was used to test the reliability of MR analysis results. RESULTS Eleven GM taxa associated with facial skin aging were identified by IVW method analysis, Family Victivallaceae (p = 0.010), Genus Eubacterium coprostanoligenes group (p = 0.038), and Genus Parasutterella (p = 0.011) were negatively associated with facial skin aging, while Phylum Verrucomicrobia (p = 0.034), Family Lactobacillaceae (p = 0.017) and its subgroups Genus Lactobacillus (p = 0.038), Genus Parabacteroides (p = 0.040), Genus Eggerthella (p = 0.049), Genus Family XIII UCG001 (p = 0.036), Genus Phascolarctobacterium (p = 0.027), and Genus Ruminococcaceae UCG005 (p = 0.012) were positively associated with facial skin aging. At Class and Order levels, we did not find a causal relationship between GM and facial skin aging. Results of sensitivity analyses did not show evidence of pleiotropy and heterogeneity. CONCLUSION Our findings confirm the causal relationship between GM and facial skin aging, providing a new perspective on delaying facial aging.
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Affiliation(s)
- Mulan Chen
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Yuhui Che
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Mengsong Liu
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Xinyu Xiao
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Lin Zhong
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Siqi Zhao
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Xueer Zhang
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Anjing Chen
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Jing Guo
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
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Gupta N, El-Gawaad NSA, Mallasiy LO, Gupta H, Yadav VK, Alghamdi S, Qusty NF. Microbial dysbiosis and the aging process: a review on the potential age-deceleration role of Lactiplantibacillus plantarum. Front Microbiol 2024; 15:1260793. [PMID: 38440135 PMCID: PMC10909992 DOI: 10.3389/fmicb.2024.1260793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 02/01/2024] [Indexed: 03/06/2024] Open
Abstract
Gut microbiota dysbiosis has been a serious risk factor for several gastric and systemic diseases. Recently, gut microbiota's role in aging was discussed. Available preclinical evidence suggests that the probiotic bacteria Lactiplantibacillus plantarums (LP) may influence the aging process via modulation of the gut microbiota. The present review summarized compelling evidence of LP's potential effect on aging hallmarks such as oxidative stress, inflammation, DNA methylation, and mitochondrial dysfunction. LP gavage modulates gut microbiota and improves overall endurance in aging animal models. LP cell constituents exert considerable antioxidant potential which may reduce ROS levels directly. In addition, restored gut microbiota facilitate a healthy intestinal milieu and accelerate multi-channel communication via signaling factors such as SCFA and GABA. Signaling factors further activate specific transcription factor Nrf2 in order to reduce oxidative damage. Nrf2 regulates cellular defense systems involving anti-inflammatory cytokines, MMPs, and protective enzymes against MAPKs. We concluded that LP supplementation may be an effective approach to managing aging and associated health risks.
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Affiliation(s)
- Nishant Gupta
- Medical Research and Development, River Engineering, Noida, India
| | - N. S. Abd El-Gawaad
- Department of Physics, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - L. O. Mallasiy
- Department of Home Economics, Faculty of Science and Arts in Tihama, King Khalid University, Muhayil, Saudi Arabia
| | | | | | - Saad Alghamdi
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Umm Al-Qura University, Makkah, Saudi Arabia
| | - Naeem F. Qusty
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Umm Al-Qura University, Makkah, Saudi Arabia
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8
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Díaz R, Garrido D. Screening competition and cross-feeding interactions during utilization of human milk oligosaccharides by gut microbes. MICROBIOME RESEARCH REPORTS 2024; 3:12. [PMID: 38455082 PMCID: PMC10917614 DOI: 10.20517/mrr.2023.61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/30/2023] [Accepted: 12/07/2023] [Indexed: 03/09/2024]
Abstract
Background: The infant gut microbiome is a complex community that influences short- and long-term health. Its assembly and composition are governed by variables such as the feeding type. Breast milk provides infants an important supply of human milk oligosaccharides (HMO), a broad family of carbohydrates comprising neutral, fucosylated, and sialylated molecules. There is a positive association between HMOs and the overrepresentation of Bifidobacterium species in the infant gut, which is sustained by multiple molecular determinants present in the genomes of these species. Infant-gut-associated Bifidobacterium species usually share a similar niche and display similar HMO inclinations, suggesting they compete for these resources. There is also strong evidence of cross-feeding interactions between HMO-derived molecules and bifidobacteria. Methods: In this study, we screened for unidirectional and bidirectional interactions between Bifidobacterium and other species using individual HMO. Bifidobacterium bifidum and Bacteroides thetaiotaomicron increased the growth of several other species when their supernatants were used, probably mediated by the partial degradation of HMO. In contrast, Bifidobacterium longum subsp. infantis. supernatants did not exhibit positive growth. Results: Bifidobacterium species compete for lacto-N-tetraose, which is associated with reduced bidirectional growth. The outcome of these interactions was HMO-dependent, in which the two species could compete for one substrate but cross-feed on another. 2'-fucosyllactose and lacto-N-neotetraose are associated with several positive interactions that generally originate from the partial degradation of these HMOs. Conclusion: This study presents evidence for complex interactions during HMO utilization, which can be cooperative or competitive, depending on the nature of the HMO. This information could be useful for understanding how breast milk supports the growth of some Bifidobacterium species, shaping the ecology of this important microbial community.
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Affiliation(s)
| | - Daniel Garrido
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Catolica de Chile, Santiago 7820436, Chile
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Cao X, Scoffield J, Xie B, Morton DB, Wu H. Drosophila melanogaster as a model to study polymicrobial synergy and dysbiosis. Front Cell Infect Microbiol 2023; 13:1279380. [PMID: 38192401 PMCID: PMC10773677 DOI: 10.3389/fcimb.2023.1279380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/01/2023] [Indexed: 01/10/2024] Open
Abstract
The fruit fly Drosophila melanogaster has emerged as a valuable model for investigating human biology, including the role of the microbiome in health and disease. Historically, studies involving the infection of D. melanogaster with single microbial species have yielded critical insights into bacterial colonization and host innate immunity. However, recent evidence has underscored that multiple microbial species can interact in complex ways through physical connections, metabolic cross-feeding, or signaling exchanges, with significant implications for healthy homeostasis and the initiation, progression, and outcomes of disease. As a result, researchers have shifted their focus toward developing more robust and representative in vivo models of co-infection to probe the intricacies of polymicrobial synergy and dysbiosis. This review provides a comprehensive overview of the pioneering work and recent advances in the field, highlighting the utility of Drosophila as an alternative model for studying the multifaceted microbial interactions that occur within the oral cavity and other body sites. We will discuss the factors and mechanisms that drive microbial community dynamics, as well as their impacts on host physiology and immune responses. Furthermore, this review will delve into the emerging evidence that connects oral microbes to systemic conditions in both health and disease. As our understanding of the microbiome continues to evolve, Drosophila offers a powerful and tractable model for unraveling the complex interplay between host and microbes including oral microbes, which has far-reaching implications for human health and the development of targeted therapeutic interventions.
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Affiliation(s)
- Xixi Cao
- Department of Integrative Biomedical & Diagnostic Sciences, Oregon Health and Science University School of Dentistry, Portland, OR, United States
| | - Jessica Scoffield
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Baotong Xie
- Department of Integrative Biomedical & Diagnostic Sciences, Oregon Health and Science University School of Dentistry, Portland, OR, United States
| | - David B. Morton
- Department of Integrative Biomedical & Diagnostic Sciences, Oregon Health and Science University School of Dentistry, Portland, OR, United States
| | - Hui Wu
- Department of Integrative Biomedical & Diagnostic Sciences, Oregon Health and Science University School of Dentistry, Portland, OR, United States
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
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10
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Kirchweger B, Zwirchmayr J, Grienke U, Rollinger JM. The role of Caenorhabditis elegans in the discovery of natural products for healthy aging. Nat Prod Rep 2023; 40:1849-1873. [PMID: 37585263 DOI: 10.1039/d3np00021d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Covering: 2012 to 2023The human population is aging. Thus, the greatest risk factor for numerous diseases, such as diabetes, cancer and neurodegenerative disorders, is increasing worldwide. Age-related diseases do not typically occur in isolation, but as a result of multi-factorial causes, which in turn require holistic approaches to identify and decipher the mode of action of potential remedies. With the advent of C. elegans as the primary model organism for aging, researchers now have a powerful in vivo tool for identifying and studying agents that effect lifespan and health span. Natural products have been focal research subjects in this respect. This review article covers key developments of the last decade (2012-2023) that have led to the discovery of natural products with healthy aging properties in C. elegans. We (i) discuss the state of knowledge on the effects of natural products on worm aging including methods, assays and involved pathways; (ii) analyze the literature on natural compounds in terms of their molecular properties and the translatability of effects on mammals; (iii) examine the literature on multi-component mixtures with special attention to the studied organisms, extraction methods and efforts regarding the characterization of their chemical composition and their bioactive components. (iv) We further propose to combine small in vivo model organisms such as C. elegans and sophisticated analytical approaches ("wormomics") to guide the way to dissect complex natural products with anti-aging properties.
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Affiliation(s)
- Benjamin Kirchweger
- Division of Pharmacognosy, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
| | - Julia Zwirchmayr
- Division of Pharmacognosy, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
| | - Ulrike Grienke
- Division of Pharmacognosy, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
| | - Judith M Rollinger
- Division of Pharmacognosy, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
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Daybog I, Kolodny O. A computational framework for resolving the microbiome diversity conundrum. Nat Commun 2023; 14:7977. [PMID: 38042865 PMCID: PMC10693575 DOI: 10.1038/s41467-023-42768-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 10/20/2023] [Indexed: 12/04/2023] Open
Abstract
Recent empirical studies offer conflicting findings regarding the relation between host fitness and the composition of its microbiome, a conflict which we term 'the microbial β- diversity conundrum'. The microbiome is crucial for host wellbeing and survival. Surprisingly, different healthy individuals' microbiome compositions, even in the same population, often differ dramatically, contrary to the notion that a vital trait should be highly conserved. Moreover, gnotobiotic individuals exhibit highly deleterious phenotypes, supporting the view that the microbiome is paramount to host fitness. However, the introduction of almost arbitrarily selected microbiota into the system often achieves a significant rescue effect of the deleterious phenotypes. This is true even for microbiota from soil or phylogenetically distant host species, highlighting an apparent paradox. We suggest several solutions to the paradox using a computational framework, simulating the population dynamics of hosts and their microbiomes over multiple generations. The answers invoke factors such as host population size, the specific mode of microbial contribution to host fitness, and typical microbiome richness, offering solutions to the conundrum by highlighting scenarios where even when a host's fitness is determined in full by its microbiome composition, this composition has little effect on the natural selection dynamics of the population.
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Affiliation(s)
- Itay Daybog
- Department of Ecology, Evolution and Behavior, The A. Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel.
| | - Oren Kolodny
- Department of Ecology, Evolution and Behavior, The A. Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel.
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12
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Dinić M, Jakovljević S, Popović N, Radojević D, Veljović K, Golić N, Terzić-Vidojević A. Assessment of stability and bioactive compounds in yogurt containing novel natural starter cultures with the ability to promote longevity in Caenorhabditis elegans. J Dairy Sci 2023; 106:7447-7460. [PMID: 37641316 DOI: 10.3168/jds.2023-23342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 05/26/2023] [Indexed: 08/31/2023]
Abstract
Yogurt represent one of the oldest fermented foods containing viable lactic acid bacteria and many bioactive compounds that could exhibit beneficial effects on human health and train our immune system to better respond to invading pathogens. Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus are commonly used for yogurt preparation under controlled temperature and environmental conditions. In this study, we investigated probiotic features of S. thermophilus BGKMJ1-36 and L. bulgaricus BGVLJ1-21 strains isolated from artisanal sour milk and yogurt by using Caenorhabditis elegans as an in vivo model system. Further, we evaluated content of total fat, saturated fatty acids, proteins, and lactose, as well as vitamins and AA of yogurt prepared from above-mentioned starter cultures during 21 d of storage at 4°C to get insights of final product stability. We showed that S. thermophilus BGKMJ1-36 and L. bulgaricus BGVLJ1-21 strains applied in combination upregulated the expression of autophagy-related genes in C. elegans. Beside autophagy, we observed activation of TIR-1-dependent transcription of lysozyme-like antimicrobial genes involved in the immune defense of C. elegans. Upregulation of these genes strongly correlates with an increase in the longevity of the worms fed with yogurt culture bacteria. Further, we showed that yogurt prepared with S. thermophilus BGKMJ1-36 and L. bulgaricus BGVLJ1-21, as a final product, is rich with vitamin B2 and dominant AA known by their prolongevity properties. Taken together, our study pointed to the beneficial features of the tested starter cultures and yogurt and highlighted their potential to be used as a fermented food with added-value properties.
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Affiliation(s)
- Miroslav Dinić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia.
| | - Stefan Jakovljević
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Nikola Popović
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Dušan Radojević
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Katarina Veljović
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Nataša Golić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Amarela Terzić-Vidojević
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia.
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13
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Chen X, Liu Y, Pu J, Gui S, Wang D, Zhong X, Tao W, Chen X, Chen W, Chen Y, Qiao R, Xie P. Multi-Omics Analysis Reveals Age-Related Microbial and Metabolite Alterations in Non-Human Primates. Microorganisms 2023; 11:2406. [PMID: 37894064 PMCID: PMC10609416 DOI: 10.3390/microorganisms11102406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/22/2023] [Accepted: 09/23/2023] [Indexed: 10/29/2023] Open
Abstract
Aging is a systemic physiological degenerative process, with alterations in gut microbiota and host metabolism. However, due to the interference of multiple confounding factors, aging-associated molecular characteristics have not been elucidated completely. Therefore, based on 16S ribosomal RNA (rRNA) gene sequencing and non-targeted metabolomic detection, our study systematically analyzed the composition and function of the gut microbiome, serum, and fecal metabolome of 36 male rhesus monkeys spanning from 3 to 26 years old, which completely covers juvenile, adult, and old stages. We observed significant correlations between 41 gut genera and age. Moreover, 86 fecal and 49 serum metabolites exhibited significant age-related correlations, primarily categorized into lipids and lipid-like molecules, organic oxygen compounds, organic acids and derivatives, and organoheterocyclic compounds. Further results suggested that aging is associated with significant downregulation of various amino acids constituting proteins, elevation of lipids, particularly saturated fatty acids, and steroids. Additionally, age-dependent changes were observed in multiple immune-regulatory molecules, antioxidant stress metabolites, and neurotransmitters. Notably, multiple age-dependent genera showed strong correlations in these changes. Together, our results provided new evidence for changing characteristics of gut microbes and host metabolism during aging. However, more research is needed in the future to verify our findings.
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Affiliation(s)
- Xiang Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yiyun Liu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Juncai Pu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Siwen Gui
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Dongfang Wang
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaogang Zhong
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Wei Tao
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaopeng Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Weiyi Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yue Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Renjie Qiao
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Peng Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; (X.C.)
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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14
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Wei JJ, Li XJ, Liu W, Chai XJ, Zhu XY, Sun PH, Liu F, Zhao YK, Huang JL, Liu YF, Zhao ST. Eucommia Polysaccharides Ameliorate Aging-Associated Gut Dysbiosis: A Potential Mechanism for Life Extension in Drosophila. Int J Mol Sci 2023; 24:ijms24065881. [PMID: 36982954 PMCID: PMC10054339 DOI: 10.3390/ijms24065881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
The gut microbiota is increasingly considered to play a key role in human immunity and health. The aging process alters the microbiota composition, which is associated with inflammation, reactive oxygen species (ROS), decreased tissue function, and increased susceptibility to age-related diseases. It has been demonstrated that plant polysaccharides have beneficial effects on the gut microbiota, particularly in reducing pathogenic bacteria abundance and increasing beneficial bacteria populations. However, there is limited evidence of the effect of plant polysaccharides on age-related gut microbiota dysbiosis and ROS accumulation during the aging process. To explore the effect of Eucommiae polysaccharides (EPs) on age-related gut microbiota dysbiosis and ROS accumulation during the aging process of Drosophila, a series of behavioral and life span assays of Drosophila with the same genetic background in standard medium and a medium supplemented with EPs were performed. Next, the gut microbiota composition and protein composition of Drosophila in standard medium and the medium supplemented with EPs were detected using 16S rRNA gene sequencing analysis and quantitative proteomic analysis. Here, we show that supplementation of Eucommiae polysaccharides (EPs) during development leads to the life span extension of Drosophila. Furthermore, EPs decreased age-related ROS accumulation and suppressed Gluconobacter, Providencia, and Enterobacteriaceae in aged Drosophila. Increased Gluconobacter, Providencia, and Enterobacteriaceae in the indigenous microbiota might induce age-related gut dysfunction in Drosophila and shortens their life span. Our study demonstrates that EPs can be used as prebiotic agents to prevent aging-associated gut dysbiosis and reactive oxidative stress.
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Affiliation(s)
- Jing-Jing Wei
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Xiu-Juan Li
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Wei Liu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Xue-Jun Chai
- College of Basic Medicine, Xi'an Medical University, Xi'an 710068, China
| | - Xiao-Yan Zhu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Peng-Hao Sun
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Feng Liu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Yong-Kang Zhao
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Jun-Lang Huang
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Ya-Fei Liu
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Shan-Ting Zhao
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
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15
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Candel S, Tyrkalska SD, Pérez-Sanz F, Moreno-Docón A, Esteban Á, Cayuela ML, Mulero V. Analysis of 16S rRNA Gene Sequence of Nasopharyngeal Exudate Reveals Changes in Key Microbial Communities Associated with Aging. Int J Mol Sci 2023; 24:ijms24044127. [PMID: 36835535 PMCID: PMC9960676 DOI: 10.3390/ijms24044127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Functional or compositional perturbations of the microbiome can occur at different sites, of the body and this dysbiosis has been linked to various diseases. Changes in the nasopharyngeal microbiome are associated to patient's susceptibility to multiple viral infections, supporting the idea that the nasopharynx may be playing an important role in health and disease. Most studies on the nasopharyngeal microbiome have focused on a specific period in the lifespan, such as infancy or the old age, or have other limitations such as low sample size. Therefore, detailed studies analyzing the age- and sex-associated changes in the nasopharyngeal microbiome of healthy people across their whole life are essential to understand the relevance of the nasopharynx in the pathogenesis of multiple diseases, particularly viral infections. One hundred twenty nasopharyngeal samples from healthy subjects of all ages and both sexes were analyzed by 16S rRNA sequencing. Nasopharyngeal bacterial alpha diversity did not vary in any case between age or sex groups. Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes were the predominant phyla in all the age groups, with several sex-associated. Acinetobacter, Brevundimonas, Dolosigranulum, Finegoldia, Haemophilus, Leptotrichia, Moraxella, Peptoniphilus, Pseudomonas, Rothia, and Staphylococcus were the only 11 bacterial genera that presented significant age-associated differences. Other bacterial genera such as Anaerococcus, Burkholderia, Campylobacter, Delftia, Prevotella, Neisseria, Propionibacterium, Streptococcus, Ralstonia, Sphingomonas, and Corynebacterium appeared in the population with a very high frequency, suggesting that their presence might be biologically relevant. Therefore, in contrast to other anatomical areas such as the gut, bacterial diversity in the nasopharynx of healthy subjects remains stable and resistant to perturbations throughout the whole life and in both sexes. Age-associated abundance changes were observed at phylum, family, and genus levels, as well as several sex-associated changes probably due to the different levels of sex hormones present in both sexes at certain ages. Our results provide a complete and valuable dataset that will be useful for future research aiming for studying the relationship between changes in the nasopharyngeal microbiome and susceptibility to or severity of multiple diseases.
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Affiliation(s)
- Sergio Candel
- Grupo de Inmunidad, Inflamación y Cáncer, Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120 Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (S.C.); (V.M.)
| | - Sylwia D. Tyrkalska
- Grupo de Inmunidad, Inflamación y Cáncer, Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120 Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Fernando Pérez-Sanz
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120 Murcia, Spain
| | - Antonio Moreno-Docón
- Servicio de Microbiología, Hospital Clínico Universitario Virgen de la Arrixaca, 30120 Murcia, Spain
- Grupo de Telomerasa, Cáncer y Envejecimiento, Servicio de Cirugía, Hospital Clínico Universitario Virgen de la Arrixaca, 30120 Murcia, Spain
| | - Ángel Esteban
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120 Murcia, Spain
| | - María L. Cayuela
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120 Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Victoriano Mulero
- Grupo de Inmunidad, Inflamación y Cáncer, Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120 Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (S.C.); (V.M.)
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16
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Louvado A, Castro C, Silva DAM, Oliveira V, Conceição LEC, Cleary DFR, Gomes NCM. Assessing the Effects of Rotifer Feed Enrichments on Turbot ( Scophthalmus maximus) Larvae and Post-Larvae Gut-Associated Bacterial Communities. Microorganisms 2023; 11:microorganisms11020520. [PMID: 36838485 PMCID: PMC9962078 DOI: 10.3390/microorganisms11020520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/22/2023] Open
Abstract
Live feed enrichments are often used in fish larvicultures as an optimized source of essential nutrients to improve larval growth and survival. In addition to this, they may also play an important role in structuring larval-associated microbial communities and may help improve their resistance to diseases. However, there is limited information available on how larval microbial communities and larviculture water are influenced by different live feed enrichments. In the present study, we investigated the effects of two commercial rotifer enrichments (ER) on turbot (Scophthalmus maximus) larval and post-larval gut-associated bacterial communities during larviculture production. We evaluated their effects on bacterial populations related to known pathogens and beneficial bacteria and their potential influence on the composition of bacterioplankton communities during larval rearing. High-throughput 16S rRNA gene sequencing was used to assess the effects of different rotifer enrichments (ER1 and ER2) on the structural diversity of bacterial communities of the whole turbot larvae 10 days after hatching (DAH), the post-larval gut 30 DAH, and the larviculture water. Our results showed that different rotifer feed enrichments were associated with significant differences in bacterial composition of turbot larvae 10 DAH, but not with the composition of larval gut communities 30 DAH or bacterioplankton communities 10 and 30 DAH. However, a more in-depth taxonomic analysis showed that there were significant differences in the abundance of Vibrionales in both 10 DAH larvae and in the 30 DAH post-larval gut fed different RE diets. Interestingly, the ER1 diet had a higher relative abundance of specific amplicon sequence variants (ASVs) related to potential Vibrio-antagonists belonging to the Roseobacter clade (e.g., Phaeobacter and Ruegeria at 10 DAH and Sulfitobacter at 30 DAH). In line with this, the diet was also associated with a lower relative abundance of Vibrio and a lower mortality. These results suggest that rotifer diets can affect colonization by Vibrio members in the guts of post-larval turbot. Overall, this study indicates that live feed enrichments can have modulatory effects on fish bacterial communities during the early stages of development, which includes the relative abundances of pathogenic and antagonist taxa in larviculture systems.
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Affiliation(s)
- Antonio Louvado
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carolina Castro
- Flatlantic—Actividades Piscícolas, SA 3070-732 Praia de Mira, Portugal
| | - Davide A. M. Silva
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Vanessa Oliveira
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
| | | | - Daniel F. R. Cleary
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Newton C. M. Gomes
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
- Correspondence:
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17
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Hammer TJ, Easton-Calabria A, Moran NA. Microbiome assembly and maintenance across the lifespan of bumble bee workers. Mol Ecol 2023; 32:724-740. [PMID: 36333950 PMCID: PMC9871002 DOI: 10.1111/mec.16769] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 09/13/2022] [Accepted: 09/21/2022] [Indexed: 11/06/2022]
Abstract
How a host's microbiome changes over its lifespan can influence development and ageing. As these temporal patterns have only been described in detail for a handful of hosts, an important next step is to compare microbiome succession more broadly and investigate why it varies. Here we characterize the temporal dynamics and stability of the bumble bee worker gut microbiome. Bumble bees have simple and host-specific gut microbiomes, and their microbial dynamics may influence health and pollination services. We used 16S rRNA gene sequencing, quantitative PCR and metagenomics to characterize gut microbiomes over the lifespan of Bombus impatiens workers. We also sequenced gut transcriptomes to examine host factors that may control the microbiome. At the community level, microbiome assembly is highly predictable and similar to patterns of primary succession observed in the human gut. However, at the strain level, partitioning of bacterial variants among colonies suggests stochastic colonization events similar to those observed in flies and nematodes. We also find strong differences in temporal dynamics among symbiont species, suggesting ecological differences among microbiome members in colonization and persistence. Finally, we show that both the gut microbiome and host transcriptome-including expression of key immunity genes-stabilize, as opposed to senesce, with age. We suggest that in highly social groups such as bumble bees, maintenance of both microbiomes and immunity contribute to inclusive fitness, and thus remain under selection even in old age. Our findings provide a foundation for exploring the mechanisms and functional outcomes of bee microbiome succession.
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Affiliation(s)
- Tobin J. Hammer
- Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA 92697,Department of Integrative Biology, University of Texas at Austin, Austin, TX 78703,Corresponding author:
| | | | - Nancy A. Moran
- Department of Integrative Biology, University of Texas at Austin, Austin, TX 78703
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18
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Zhang J, Zhao Y, Sun Z, Sun T. Lacticaseibacillus rhamnosus Probio-M9 extends the lifespan of Caenorhabditis elegans. Commun Biol 2022; 5:1139. [PMID: 36302976 PMCID: PMC9613993 DOI: 10.1038/s42003-022-04031-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 09/23/2022] [Indexed: 11/24/2022] Open
Abstract
Probiotics have been characterized as useful for maintaining the balance of host gut flora and conferring health effects, but few studies have focused on their potential for delaying aging in the host. Here we show that Lacticaseibacillus rhamnosus Probio-M9 (Probio-M9), a healthy breast milk probiotic, enhances the locomotor ability and slows the decline in muscle function of the model organism Caenorhabditis elegans. Live Probio-M9 significantly extends the lifespan of C. elegans in a dietary restriction-independent manner. By screening various aging-related mutants of C. elegans, we find that Probio-M9 extends lifespan via p38 cascade and daf-2 signaling pathways, independent on daf-16 but dependent on skn-1. Probio-M9 protects and repairs damaged mitochondria by activating mitochondrial unfolded protein response. The significant increase of amino acids, sphingolipid, galactose and fatty acids in bacterial metabolites might be involved in extending the lifespan of C. elegans. We reveal that Probio-M9 as a dietary supplementation had the potential to delay aging in C. elegans and also provide new methods and insights for further analyzing probiotics in improving host health and delaying the occurrence of age-related chronic diseases.
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Affiliation(s)
- Juntao Zhang
- Inner Mongolia Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Yanmei Zhao
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhihong Sun
- Inner Mongolia Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Tiansong Sun
- Inner Mongolia Key Laboratory of Dairy Biotechnology and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
- Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
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19
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Zhang N, Zhang Y, Wang Z, Pan F, Ren R, Li Z, Zhao H, Luo X, Li Z, Wang L, Mo R, Sun G, Peng L, Ni M, Yang Y. Regular fecal microbiota transplantation to Senescence Accelerated Mouse-Prone 8 (SAMP8) mice delayed the aging of locomotor and exploration ability by rejuvenating the gut microbiota. Front Aging Neurosci 2022; 14:991157. [PMID: 36262889 PMCID: PMC9574184 DOI: 10.3389/fnagi.2022.991157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/14/2022] [Indexed: 12/04/2022] Open
Abstract
Recent evidence points out the role of the gut microbiota in the aging process. However, the specific changes and relevant interventions remain unclear. In this study, Senescence Accelerated Mouse-Prone 8 (SAMP8) mice were divided into four groups; young-FMT-group transplanted fecal microbiota from young donors (2-3°months old) and old-FMT-group transplanted from old donors (10-11°months old); additionally, other two groups either adult mice injected with saline solution or untreated mice served as the saline and blank control groups, respectively. All mice were intervened from their 7-months-old until 13-months-old. The open field test at 9 and 11°months of age showed that the mice transplanted with gut microbiota from young donors had significantly better locomotor and exploration ability than those of transplanted with old-donors gut microbiota and those of saline control while was comparable with the blank control. 16S rRNA gene sequencing showed that the gut microbiome of recipient mice of young donors was altered at 11°months of age, whereas the alternation of the gut microbiome of old-donor recipient mice was at 9°months. For comparison, the recipient mice in the blank and saline control groups exhibited changes in the gut microbiome at 10°months of age. The hallmark of aging-related gut microbiome change was an increase in the relative abundance of Akkermansia, which was significantly higher in the recipients transplanted with feces from older donors than younger donors at 9°months of age. This study shows that fecal microbiota transplantation from younger donors can delay aging-related declines in locomotor and exploration ability in mice by changing the gut microbiome.
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Affiliation(s)
- Nana Zhang
- Medical School of Chinese PLA, Beijing, China
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yan Zhang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Zikai Wang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Fei Pan
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Rongrong Ren
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Zhengpeng Li
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Huijun Zhao
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Xi Luo
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Zongwei Li
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Lei Wang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Rui Mo
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Gang Sun
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Lihua Peng
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Ming Ni
- Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Yunsheng Yang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
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20
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Zhu F, Fang Y, Wang Z, Wang P, Yang K, Xiao L, Wang R. Salicylic acid remodeling of the rhizosphere microbiome induces watermelon root resistance against Fusarium oxysporum f. sp. niveum infection. Front Microbiol 2022; 13:1015038. [PMID: 36212858 PMCID: PMC9539938 DOI: 10.3389/fmicb.2022.1015038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
Fusarium wilt disease poses a severe threat to watermelon cultivation by affecting the yield and quality of the fruit. We had previously found that the rhizosphere microbiome has a significant impact on the ability of watermelon plants to resist Fusarium wilt development and that salicylic acid (SA) is closely related to this phenomenon. Therefore, in this study, the role of SA as a mediator between plants and microbes in activating resistance against Fusarium oxysporum f. sp. niveum (FON) infection was explored through physiological, biochemical, and metagenomic sequencing experiments. We demonstrated that exogenous SA treatment could specifically increase some beneficial rhizosphere species that can confer resistance against FON inoculation, such as Rhodanobacter, Sphingomonas, and Micromonospora. Functional annotation analysis indicated that SA application significantly increased the relative abundance of glycoside hydrolase and polysaccharide lyase genes in the microbiome, which may play an essential role in increasing plant lipids. Moreover, network interaction analysis suggested that the highly expressed AAC6_IIC gene may be manipulated through SA signal transduction pathways. In conclusion, these results provide a novel strategy for controlling Fusarium wilt in watermelons from the perspective of environmental ecology, that is, by manipulating the rhizosphere microbiome through SA to control Fusarium wilt.
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Affiliation(s)
- Feiying Zhu
- Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Phytohormones, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Yong Fang
- Hunan Academy of Agricultural Sciences, Changsha, China
| | - Zhiwei Wang
- Hunan Academy of Agricultural Sciences, Changsha, China
| | - Pei Wang
- Hunan Academy of Agricultural Sciences, Changsha, China
| | - Kankan Yang
- Hunan Academy of Agricultural Sciences, Changsha, China
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Ruozhong Wang
- Hunan Provincial Key Laboratory of Phytohormones, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
- *Correspondence: Ruozhong Wang,
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21
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Wang C, Yang S, Ma L, Li Y, Shi Y, Wang M, Shao L, Li Z, Wang Y. Alterations of Chinese women's skin microbiota associated with the aging process. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1201-1205. [PMID: 35983972 PMCID: PMC9828269 DOI: 10.3724/abbs.2022105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Caixia Wang
- Shanghai Institute of TechnologyShanghai201418China,The Oriental Beauty Valley Research InstituteShanghai201403China
| | - Suzhen Yang
- Shandong Freda Biotech Co.LtdJinanShandong250101China
| | - Laiji Ma
- Shanghai Institute of TechnologyShanghai201418China,The Oriental Beauty Valley Research InstituteShanghai201403China
| | - Yan Li
- Shandong Freda Biotech Co.LtdJinanShandong250101China
| | - Yanqin Shi
- Shanghai Institute of TechnologyShanghai201418China,The Oriental Beauty Valley Research InstituteShanghai201403China
| | - Man Wang
- Shanghai Jiaotong University Affiliated Sixth People’s HospitalSouth CampusShanghai201499China
| | - Li Shao
- Shanghai Institute of TechnologyShanghai201418China,Correspondene address. Tel: +86-21-37199016; (L.S.) / Tel: +86-21-34293635; (Z.L.) / Tel: +86-21-37199016; (Y.W.) @
| | - Zongjie Li
- Shanghai Institute of TechnologyShanghai201418China,Correspondene address. Tel: +86-21-37199016; (L.S.) / Tel: +86-21-34293635; (Z.L.) / Tel: +86-21-37199016; (Y.W.) @
| | - Yue Wang
- Shanghai Institute of TechnologyShanghai201418China,The Oriental Beauty Valley Research InstituteShanghai201403China,Correspondene address. Tel: +86-21-37199016; (L.S.) / Tel: +86-21-34293635; (Z.L.) / Tel: +86-21-37199016; (Y.W.) @
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22
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Rennie KJ, Witham M, Bradley P, Clegg A, Connolly S, Hancock HC, Hiu S, Marsay L, McDonald C, Robertson L, Simms L, Steel AJ, Steves CJ, Storey B, Wason J, Wilson N, von Zglinicki T, Sayer AAP. MET-PREVENT: metformin to improve physical performance in older people with sarcopenia and physical prefrailty/frailty - protocol for a double-blind, randomised controlled proof-of-concept trial. BMJ Open 2022; 12:e061823. [PMID: 35851031 PMCID: PMC9297211 DOI: 10.1136/bmjopen-2022-061823] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/19/2022] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Skeletal muscle dysfunction is central to both sarcopenia and physical frailty, which are associated with a wide range of adverse outcomes including falls and fractures, longer hospital stays, dependency and the need for care. Resistance training may prevent and treat sarcopenia and physical frailty, but not everyone can or wants to exercise. Finding alternatives is critical to alleviate the burden of adverse outcomes associated with sarcopenia and physical frailty. This trial will provide proof-of-concept evidence as to whether metformin can improve physical performance in older people with sarcopenia and physical prefrailty or frailty. METHODS AND ANALYSIS MET-PREVENT is a parallel group, double-blind, placebo-controlled proof-of-concept trial. Trial participants can participate from their own homes, including completing informed consent and screening assessments. Eligible participants with low grip strength or prolonged sit-to-stand time together with slow walk speed will be randomised to either oral metformin hydrochloride 500 mg tablets or matched placebo, taken three times a day for 4 months. The recruitment target is 80 participants from two secondary care hospitals in Newcastle and Gateshead, UK. Local primary care practices will act as participant identification centres. Randomisation will be performed using a web-based minimisation system with a random element, balancing on sex and baseline walk speed. Participants will be followed up for 4 months post-randomisation, with outcomes collected at baseline and 4 months. The primary outcome measure is the four metre walk speed at the 4-month follow-up visit. ETHICS AND DISSEMINATION The trial has been approved by the Liverpool NHS Research Ethics Committee (20/NW/0470), the Medicines and Healthcare Regulatory Authority (EudraCT 2020-004023-16) and the UK Health Research Authority (IRAS 275219). Results will be made available to participants, their families, patients with sarcopenia, the public, regional and national clinical teams, and the international scientific community. TRIAL REGISTRATION NUMBER ISRCTN29932357.
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Affiliation(s)
- Katherine J Rennie
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Miles Witham
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Penny Bradley
- Pharmacy Directorate, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle Upon Tyne, UK
| | - Andrew Clegg
- Academic Unit of Elderly Care & Rehabilitation, University of Leeds, Bradford, UK
| | - Stephen Connolly
- Patient and Public Involvement Representative, Newcastle upon Tyne, UK
| | - Helen C Hancock
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Shaun Hiu
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Leanne Marsay
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | | | - Laura Robertson
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Laura Simms
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Alison J Steel
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | | | - Bryony Storey
- Gateshead Health NHS Foundation Trust, Gateshead, UK
| | - James Wason
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Nina Wilson
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | | | - Avan A P Sayer
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
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23
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Coenzyme A precursors flow from mother to zygote and from microbiome to host. Mol Cell 2022; 82:2650-2665.e12. [PMID: 35662397 DOI: 10.1016/j.molcel.2022.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 02/09/2022] [Accepted: 05/05/2022] [Indexed: 01/01/2023]
Abstract
Coenzyme A (CoA) is essential for metabolism and protein acetylation. Current knowledge holds that each cell obtains CoA exclusively through biosynthesis via the canonical five-step pathway, starting with pantothenate uptake. However, recent studies have suggested the presence of additional CoA-generating mechanisms, indicating a more complex system for CoA homeostasis. Here, we uncovered pathways for CoA generation through inter-organismal flows of CoA precursors. Using traceable compounds and fruit flies with a genetic block in CoA biosynthesis, we demonstrate that progeny survive embryonal and early larval development by obtaining CoA precursors from maternal sources. Later in life, the microbiome can provide the essential CoA building blocks to the host, enabling continuation of normal development. A flow of stable, long-lasting CoA precursors between living organisms is revealed. This indicates the presence of complex strategies to maintain CoA homeostasis.
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24
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Li G, Jin B, Fan Z. Mechanisms Involved in Gut Microbiota Regulation of Skeletal Muscle. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2151191. [PMID: 35633886 PMCID: PMC9132697 DOI: 10.1155/2022/2151191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/03/2022] [Indexed: 12/12/2022]
Abstract
Skeletal muscle is one of the largest organs in the body and is essential for maintaining quality of life. Loss of skeletal muscle mass and function can lead to a range of adverse consequences. The gut microbiota can interact with skeletal muscle by regulating a variety of processes that affect host physiology, including inflammatory immunity, protein anabolism, energy, lipids, neuromuscular connectivity, oxidative stress, mitochondrial function, and endocrine and insulin resistance. It is proposed that the gut microbiota plays a role in the direction of skeletal muscle mass and work. Even though the notion of the gut microbiota-muscle axis (gut-muscle axis) has been postulated, its causal link is still unknown. The impact of the gut microbiota on skeletal muscle function and quality is described in detail in this review.
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Affiliation(s)
- Guangyao Li
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
- Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
| | - Binghui Jin
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
- Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
| | - Zhe Fan
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
- Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
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25
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Ong JS, Lew LC, Hor YY, Liong MT. Probiotics: The Next Dietary Strategy against Brain Aging. Prev Nutr Food Sci 2022; 27:1-13. [PMID: 35465109 PMCID: PMC9007707 DOI: 10.3746/pnf.2022.27.1.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 11/06/2022] Open
Abstract
Owing to their long history of safe use, probiotic microorganisms, typically from the genus Lactobacillus, have long been recognized, especially in traditional and fermented food industries. Although conventionally used for dairy, meat, and vegetable fermentation, the use of probiotics in health foods, supplements, and nutraceuticals has gradually increased. Over the past two decades, the importance of probiotics in improving gut health and immunity as well as alleviating metabolic diseases has been recognized. The new concept of a gut-heart-brain axis has led to the development of various innovations and strategies related to the introduction of probiotics in food and diet. Probiotics influence gut microbiota profiles, inflammation, and disorders and directly impact brain neurotransmitter pathways. As brain health often declines with age, the concept of probiotics being beneficial for the aging brain has also gained much momentum and emphasis in both research and product development. In this review, the concept of the aging brain, different in vivo aging models, and various aging-related benefits of probiotics are discussed.
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Affiliation(s)
- Jia-Sin Ong
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Lee-Ching Lew
- Probionic Corporation, Jeonbuk Institute for Food-Bioindustry, Jeonbuk 54810, Korea
| | - Yan-Yan Hor
- Department of Biotechnology, Yeungnam University, Gyeongbuk 38541, Korea
| | - Min-Tze Liong
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
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26
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RNA-Seq Analysis on the Microbiota Associated with the White Shrimp (Litopenaeus vannamei) in Different Stages of Development. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12052483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
White leg shrimp (Litopenaeus vannamei) is a widely cultured species along the Pacific coast and is one of the most important crustaceans in world aquaculture. The microbiome composition of L. vannamei has been previously studied in different developmental stages, but there is limited information regarding the functional role of the microbiome during the development of L. vannamei. In this study the metatranscriptome in different developmental stages of L. vannamei (larvae, juvenile and adult) were generated using next generation sequencing techniques. The bacterial phyla found throughout all the stages of development belonged to the Proteobacteria, Firmicutes and Actinobacteria, these bacterial phyla are present in the digestive tract and are capable of producing several hydrolytic enzymes, which agrees with high representation of the primary metabolism and energy production, in both host and the microbiome. In this sense, functional changes were observed as the development progressed, in both host and the microbiome, in stages of larvae the most represented metabolic functions were associated with biomass production; while in juvenile and adult stages a higher proportion of metabolic functions associated to biotic and abiotic stress in L. vannamei and the microbiome were shown. This study provides evidence of the interaction of the microbiome with L. vannamei, and how the stage of development and the culture conditions of this species influences the gene expression and the microbiome composition, which suggests a complex metabolic network present throughout the life cycle of L. vannamei.
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27
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Tian D, Han M. Bacterial peptidoglycan muropeptides benefit mitochondrial homeostasis and animal physiology by acting as ATP synthase agonists. Dev Cell 2022; 57:361-372.e5. [PMID: 35045336 PMCID: PMC8825754 DOI: 10.1016/j.devcel.2021.12.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 10/18/2021] [Accepted: 12/15/2021] [Indexed: 11/24/2022]
Abstract
The symbiotic relationship between commensal microbes and host animals predicts unidentified beneficial impacts of individual bacterial metabolites on animal physiology. Peptidoglycan fragments (muropeptides) from the bacterial cell wall are known for their roles in pathogenicity and for inducing host immune responses. However, the potential beneficial usage of muropeptides from commensal bacteria by the host needs exploration. We identified a striking role for muropeptides in supporting mitochondrial homeostasis, development, and behaviors in Caenorhabditis elegans. We determined that the beneficial molecules are disaccharide muropeptides containing a short AA chain, and they enter intestinal-cell mitochondria to repress oxidative stress. Further analyses indicate that muropeptides execute this role by binding to and promoting the activity of ATP synthase. Therefore, given the exceptional structural conservation of ATP synthase, the role of muropeptides as a rare agonist of the ATP synthase presents a major conceptual modification regarding the impact of bacterial cell metabolites on animal physiology.
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Affiliation(s)
- Dong Tian
- Department of MCDB, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Min Han
- Department of MCDB, University of Colorado at Boulder, Boulder, CO 80309, USA.
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28
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Xiong W, Zhao X, Xu Q, Wei G, Zhang L, Fan Y, Wen L, Liu Y, Zhang T, Zhang L, Tong Y, Yin Q, Zhang TE, Yan Z. Qisheng Wan formula ameliorates cognitive impairment of Alzheimer's disease rat via inflammation inhibition and intestinal microbiota regulation. JOURNAL OF ETHNOPHARMACOLOGY 2022; 282:114598. [PMID: 34492320 DOI: 10.1016/j.jep.2021.114598] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Qisheng Wan formula (QWF) was first described in the book Sheng Ji Zong Lu in 1117. The book states that QWF can cure forgetfulness, improve the mind, and make people smart. Hence, QWF has been widely used to treat patients with forgetfulness or dementia. QWF, a classic Chinese formulation, comprises seven herbal drugs: the sclerotium of Poria cocos (Schw.) Wolf, bark of Cinnamomum cassia Presl, root of Polygala tenuifolia Willd., root and rhizome of Panax ginseng C. A. Mey., root of Asparagus cochinchinensis (Lour.) Merr., root and rhizome of Acorus tatarinowii Schott, and root bark of Lycium chinense Mill. AIM OF THE STUDY This study aimed to utilize modern pharmacological methods to evaluate the therapeutic effects and explore the underlying mechanism of QWF action on rats with Alzheimer's disease (AD). MATERIALS AND METHODS The chemical profile of QWF was characterized using ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. The AD rat model was established via a bilateral intraventricular injection of amyloid-β (1-42) (Aβ1-42). The rats were subsequently treated daily with QWF for 4 weeks. The Morris water maze test was performed to evaluate the cognition processes in the rats, whereas histological changes in the hippocampus were observed using hematoxylin and eosin staining. The expression levels of Aβ1-42, nuclear factor-kappa B (NF-κB), tumor necrosis factor (TNF)-α, and interleukin (IL)-6 in the hippocampus and colon were assessed. Moreover, the diversity and composition of the intestinal microbiota were analyzed using 16S rDNA gene sequencing. RESULTS One hundred and fourteen compounds were characterized in QWF. QWF significantly ameliorated the cognition processes and histopathological damages due to AD in rats by decreasing the deposition of Aβ1-42 and downregulating the expression of NF-κB, TNF-α, and IL-6. QWF also modulated changes in the diversity and composition of intestinal microbiota to suppress the relative abundance of inflammation-associated microbiota. CONCLUSION This study showed that QWF can suppress proinflammatory factors and modulate the intestinal microbiota in AD rats.
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Affiliation(s)
- Wei Xiong
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Xiaoqin Zhao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Qing Xu
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Guihua Wei
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Liudai Zhang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Yuqing Fan
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Lingmiao Wen
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Yanjun Liu
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Tinglan Zhang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Li Zhang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Yan Tong
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
| | - Qiaozhi Yin
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.
| | - Tian-E Zhang
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.
| | - Zhiyong Yan
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, PR China.
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29
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Pallikkuth S, Mendez R, Russell K, Sirupangi T, Kvistad D, Pahwa R, Villinger F, Banerjee S, Pahwa S. Age Associated Microbiome and Microbial Metabolites Modulation and Its Association With Systemic Inflammation in a Rhesus Macaque Model. Front Immunol 2021; 12:748397. [PMID: 34737748 PMCID: PMC8560971 DOI: 10.3389/fimmu.2021.748397] [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: 07/27/2021] [Accepted: 09/28/2021] [Indexed: 01/19/2023] Open
Abstract
Aging is associated with declining immunity and inflammation as well as alterations in the gut microbiome with a decrease of beneficial microbes and increase in pathogenic ones. The aim of this study was to investigate the age associated gut microbiome in relation to immunologic and metabolic profile in a non-human primate (NHP) model. 12 geriatric (age 19-24 years) and 4 young adult (age 3-4 years) Rhesus macaques were included in this study. Immune cell subsets were characterized in peripheral blood mononuclear cells (PBMC) by flow cytometry and plasma cytokines levels were determined by bead based multiplex cytokine analysis. Stool samples were collected by ileal loop and investigated for microbiome analysis by shotgun metagenomics. Serum, gut microbial lysate, and microbe-free fecal extract were subjected to metabolomic analysis by mass-spectrometry. Our results showed that the gut microbiome in geriatric animals had higher abundance of Archaeal and Proteobacterial species and lower Firmicutes than the young adults. Highly abundant microbes in the geriatric animals showed a direct association with plasma biomarkers of inflammation and immune activation such as neopterin, CRP, TNF, IL-2, IL-6, IL-8 and IFN-γ. Significant enrichment of metabolites that contribute to inflammatory and cytotoxic pathways was observed in serum and feces of geriatric animals compared to the young adults. We conclude that aging NHP undergo immunosenescence and age associated alterations in the gut microbiome that has a distinct metabolic profile. Aging NHP can serve as a model for investigating the relationship of the gut microbiome to particular age-associated comorbidities and for strategies aimed at modulating the microbiome.
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Affiliation(s)
- Suresh Pallikkuth
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Roberto Mendez
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Kyle Russell
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Tirupataiah Sirupangi
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, United States
| | - Daniel Kvistad
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Rajendra Pahwa
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Francois Villinger
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, United States
| | - Santanu Banerjee
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States.,Miami Integrative Metabolomics Research Center (MIMRC), University of Miami Miller School of Medicine, Miami, FL, United States.,Center for Scientific Review, National Institute of Health, Bethesda, MD, United States
| | - Savita Pahwa
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, United States
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30
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Haniuda K, Gommerman JL, Reich HN. The microbiome and IgA nephropathy. Semin Immunopathol 2021; 43:649-656. [PMID: 34664087 DOI: 10.1007/s00281-021-00893-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/16/2021] [Indexed: 12/12/2022]
Abstract
The immunopathogenic mechanisms underlying immunoglobulin A nephropathy (IgAN) are poorly understood, yet it is one of the most common causes of kidney failure globally. The commonly referenced syndrome of synpharyngitic gross hematuria as a presenting feature of IgAN has led to a logical association between infections and development of IgAN, however no pathogenic organism has been clearly linked to IgAN. Advances in sequencing technology have enabled more detailed characterization of host microbial communities, and highlighted the interrelationship between microbiota and immune responses in health and disease. This review will summarize current thinking on the relationship between microbiota and development of IgAN with a focus on recent studies relating aberrant mucosal IgA-biased immune responses to microbiota and how this may be related to the immunopathogenesis of IgAN.
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Affiliation(s)
- Kei Haniuda
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | | | - Heather N Reich
- Division of Nephrology, Department of Medicine, University of Toronto and University Health Network, Toronto, ON, Canada.
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31
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Competitive Coherence Generates Qualia in Bacteria and Other Living Systems. BIOLOGY 2021; 10:biology10101034. [PMID: 34681133 PMCID: PMC8533353 DOI: 10.3390/biology10101034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/06/2021] [Accepted: 10/06/2021] [Indexed: 11/16/2022]
Abstract
The relevance of bacteria to subjective experiences or qualia is underappreciated. Here, I make four proposals. Firstly, living systems traverse sequences of active states that determine their behaviour; these states result from competitive coherence, which depends on connectivity-based competition between a Next process and a Now process, whereby elements in the active state at time n+1 are chosen between the elements in the active state at time n and those elements in the developing n+1 state. Secondly, bacteria should help us link the mental to the physical world given that bacteria were here first, are highly complex, influence animal behaviour and dominate the Earth. Thirdly, the operation of competitive coherence to generate active states in bacteria, brains and other living systems is inseparable from qualia. Fourthly, these qualia become particularly important to the generation of active states in the highest levels of living systems, namely, the ecosystem and planetary levels.
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32
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The diversity and composition of the human gut lactic acid bacteria and bifidobacterial microbiota vary depending on age. Appl Microbiol Biotechnol 2021; 105:8427-8440. [PMID: 34625821 DOI: 10.1007/s00253-021-11625-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 12/25/2022]
Abstract
Aging is associated with gut microbiota alterations, characterized by changes in intestinal microbial diversity and composition. However, no study has yet focused on investigating age-related changes in the low-abundant but potentially beneficial subpopulations of gut lactic acid bacteria (LAB) and Bifidobacterium. Our study found that the subjects' age correlated negatively with the alpha diversity of the gut bifidobacterial microbiota, and such correlation was not observed in the gut LAB subpopulation. Principal coordinate analysis (PCoA) and analysis of distribution of operational taxonomic units (OTUs) revealed that the structure and composition of the gut bifidobacterial subpopulation of the longevous elderly group were rather different from that of the other three age groups. The same analyses were applied to identify age-dependent characteristics of the gut LAB subpopulation, and the results revealed that the gut LAB subpopulation of young adults was significantly different from that of all three elderly groups. Our study identified several potentially beneficial bacteria (e.g., Bifidobacterium breve and Bifidobacterium longum) that were enriched in the longevous elderly group (P < 0.05), and the relative abundance of Bifidobacterium adolescentis decreased significantly with the increase in age (P < 0.05). Although both bifidobacteria and LAB are generally considered as health-promoting taxa, their age-dependent distribution varied from each other, suggesting their different life stage changes and potentially different functional roles. This study provided novel species-level gut bifidobacterial and LAB microbiota profiles of a large cohort of subjects and identified several age-or longevity-associated features and biomarkers. KEY POINTS: • The alpha diversity of the gut bifidobacterial microbiota decreased with age, while LAB did not change. • The structure and composition of the gut bifidobacterial subpopulation of the longevous elderly group were rather different from that of the other three age groups. • Several potentially beneficial bacteria (e.g., Bifidobacterium breve and Bifidobacterium longum) that were enriched in the longevous elderly group.
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16S rRNA of Mucosal Colon Microbiome and CCL2 Circulating Levels Are Potential Biomarkers in Colorectal Cancer. Int J Mol Sci 2021; 22:ijms221910747. [PMID: 34639088 PMCID: PMC8509685 DOI: 10.3390/ijms221910747] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/30/2021] [Accepted: 09/30/2021] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignancies in the Western world and intestinal dysbiosis might contribute to its pathogenesis. The mucosal colon microbiome and C-C motif chemokine 2 (CCL2) were investigated in 20 healthy controls (HC) and 20 CRC patients using 16S rRNA sequencing and immunoluminescent assay, respectively. A total of 10 HC subjects were classified as overweight/obese (OW/OB_HC) and 10 subjects were normal weight (NW_HC); 15 CRC patients were classified as OW/OB_CRC and 5 patients were NW_CRC. Results: Fusobacterium nucleatum and Escherichia coli were more abundant in OW/OB_HC than in NW_HC microbiomes. Globally, Streptococcus intermedius, Gemella haemolysans, Fusobacterium nucleatum, Bacteroides fragilis and Escherichia coli were significantly increased in CRC patient tumor/lesioned tissue (CRC_LT) and CRC patient unlesioned tissue (CRC_ULT) microbiomes compared to HC microbiomes. CCL2 circulating levels were associated with tumor presence and with the abundance of Fusobacterium nucleatum, Bacteroides fragilis and Gemella haemolysans. Our data suggest that mucosal colon dysbiosis might contribute to CRC pathogenesis by inducing inflammation. Notably, Fusobacterium nucleatum, which was more abundant in the OW/OB_HC than in the NW_HC microbiomes, might represent a putative link between obesity and increased CRC risk.
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Pu A, Lee DSW, Isho B, Naouar I, Gommerman JL. The Impact of IgA and the Microbiota on CNS Disease. Front Immunol 2021; 12:742173. [PMID: 34603329 PMCID: PMC8479159 DOI: 10.3389/fimmu.2021.742173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/31/2021] [Indexed: 12/21/2022] Open
Abstract
Although anatomically distant from the central nervous system (CNS), gut-derived signals can dynamically regulate both peripheral immune cells and CNS-resident glial cells to modulate disease. Recent discoveries of specific microbial taxa and microbial derived metabolites that modulate neuroinflammation and neurodegeneration have provided mechanistic insight into how the gut may modulate the CNS. Furthermore, the participation of the gut in regulation of peripheral and CNS immune activity introduces a potential therapeutic target. This review addresses emerging literature on how the microbiome can affect glia and circulating lymphocytes in preclinical models of human CNS disease. Critically, this review also discusses how the host may in turn influence the microbiome, and how this may impact CNS homeostasis and disease, potentially through the production of IgA.
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Affiliation(s)
| | | | | | | | - Jennifer L. Gommerman
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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Teulière J, Bernard C, Bapteste E. Interspecific interactions that affect ageing: Age-distorters manipulate host ageing to their own evolutionary benefits. Ageing Res Rev 2021; 70:101375. [PMID: 34082078 DOI: 10.1016/j.arr.2021.101375] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/22/2021] [Accepted: 05/26/2021] [Indexed: 02/07/2023]
Abstract
Genetic causes for ageing are traditionally investigated within a species. Yet, the lifecycles of many organisms intersect. Additional evolutionary and genetic causes of ageing, external to a focal species/organism, may thus be overlooked. Here, we introduce the phrase and concept of age-distorters and its evidence. Age-distorters carry ageing interfering genes, used to manipulate the biological age of other entities upon which the reproduction of age-distorters relies, e.g. age-distorters bias the reproduction/maintenance trade-offs of cells/organisms for their own evolutionary interests. Candidate age-distorters include viruses, parasites and symbionts, operating through specific, genetically encoded interferences resulting from co-evolution and arms race between manipulative non-kins and manipulable species. This interference results in organismal ageing when age-distorters prompt manipulated organisms to favor their reproduction at the expense of their maintenance, turning these hosts into expanded disposable soma. By relying on reproduction/maintenance trade-offs affecting disposable entities, which are left ageing to the reproductive benefit of other physically connected lineages with conflicting evolutionary interests, the concept of age-distorters expands the logic of the Disposable Soma theory beyond species with fixed germen/soma distinctions. Moreover, acknowledging age-distorters as external sources of mutation accumulation and antagonistic pleiotropic genes expands the scope of the mutation accumulation and of the antagonistic pleiotropy theories.
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Affiliation(s)
- Jérôme Teulière
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Sorbonne Université, CNRS, Museum National d'Histoire Naturelle, EPHE, Université des Antilles, Paris, France
| | - Charles Bernard
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Sorbonne Université, CNRS, Museum National d'Histoire Naturelle, EPHE, Université des Antilles, Paris, France
| | - Eric Bapteste
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Sorbonne Université, CNRS, Museum National d'Histoire Naturelle, EPHE, Université des Antilles, Paris, France.
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Mathis SP, Bodduluri SR, Haribabu B. Interrelationship between the 5-lipoxygenase pathway and microbial dysbiosis in the progression of Alzheimer's disease. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:158982. [PMID: 34062254 DOI: 10.1016/j.bbalip.2021.158982] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/11/2021] [Accepted: 05/17/2021] [Indexed: 02/08/2023]
Abstract
Alzheimer's disease (AD) is an age-related neurodegenerative disorder involving neurofibrillary tangles and amyloid plaques. The tau phosphorylation responsible for neurofibrillary tangles and amyloid deposition which causes plaques are both accelerated through the activity of 5-lipoxygenase (5-LO). In addition to these pathological pathways, 5-LO has also been linked to the neuro-inflammation associated with disease progression as well as to dysbiosis in the gut. Interestingly, gut dysbiosis itself has been correlated to AD development. Not only do gut metabolites have direct effects on the brain, but pro-inflammatory mediators such as LPS, BMAA and bacterial amyloids produced in the gut due to dysbiosis reach the brain causing increased neuro-inflammation. While microbial dysbiosis and 5-LO exert detrimental effects in the brain, the cause/effect relationship between these factors remain unknown. These issues may be addressed using mouse models of AD in the context of different knockout mice in the 5-LO pathway in specific pathogen-free, germ-free as well as gnotobiotic conditions.
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Affiliation(s)
- Steven P Mathis
- Department of Microbiology and Immunology, James Graham Brown Cancer Center and Center for Microbiomics, Inflammation and Pathogenicity, Louisville, KY 40202, United States of America; University of Louisville Health Sciences Center, Louisville, KY 40202, United States of America
| | - Sobha R Bodduluri
- Department of Microbiology and Immunology, James Graham Brown Cancer Center and Center for Microbiomics, Inflammation and Pathogenicity, Louisville, KY 40202, United States of America; University of Louisville Health Sciences Center, Louisville, KY 40202, United States of America
| | - Bodduluri Haribabu
- Department of Microbiology and Immunology, James Graham Brown Cancer Center and Center for Microbiomics, Inflammation and Pathogenicity, Louisville, KY 40202, United States of America; University of Louisville Health Sciences Center, Louisville, KY 40202, United States of America.
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Tabassum R, Ashfaq M, Oku H. Current Pharmaceutical Aspects of Synthetic Quinoline Derivatives. Mini Rev Med Chem 2021; 21:1152-1172. [PMID: 33319670 DOI: 10.2174/1389557520999201214234735] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 11/22/2022]
Abstract
Quinoline derivatives are considered broad-spectrum pharmacological compounds that exhibit a wide range of biological activities. Integration of quinoline moiety can improve its physical and chemical properties and also pharmacological behavior. Due to its wide range of pharmaceutical applications, it is a very popular compound to design new drugs for the treatment of multiple diseases like cancer, dengue fever, malaria, tuberculosis, fungal infections, AIDS, Alzheimer's disease and diabetes. In this review, our major focus is to pay attention to the biological activities of quinoline compounds in the treatment of these diseases such as anti-viral, anti-cancer, anti-malarial, antibacterial, anti-fungal, anti-tubercular and anti-diabetic.
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Affiliation(s)
- Rukhsana Tabassum
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, 36100, Pakistan
| | - Muhammad Ashfaq
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, 36100, Pakistan
| | - Hiroyuki Oku
- Division of Molecular Science, Graduate School of Science & Engineering Gunma University, Gunma 376-8515, Japan
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Xia X, Wang Y, Yu Z, Chen J, Han JDJ. Assessing the rate of aging to monitor aging itself. Ageing Res Rev 2021; 69:101350. [PMID: 33940202 DOI: 10.1016/j.arr.2021.101350] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 04/05/2021] [Accepted: 04/26/2021] [Indexed: 12/22/2022]
Abstract
Healthy aging is the prime goal of aging research and interventions. Healthy aging or not can be quantified by biological aging rates estimated by aging clocks. Generation and accumulation of large scale high-dimensional biological data together with maturation of artificial intelligence among other machine learning techniques, have enabled and spurred the rapid development of various aging rate estimators (aging clocks). Here we review the data sources and compare the algorithms of recent human aging clocks, and the applications of these clocks in both researches and daily life. We envision that not only more and multiscale data on cross-sectional data will add momentum to the aging clock development, new longitudinal and interventional data will further raise the aging clock development to the next level to be trained by true biological age such as morbidity and mortality age.
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Landay A, Bartley JM, Banerjee D, Hargis G, Haynes L, Keshavarzian A, Kuo CL, Kwon OS, Li S, Li S, Oh J, Ozbolat IT, Ucar D, Xu M, Yao X, Unutmaz D, Kuchel GA. Network Topology of Biological Aging and Geroscience-Guided Approaches to COVID-19. FRONTIERS IN AGING 2021; 2:695218. [PMID: 35128530 PMCID: PMC8813169 DOI: 10.3389/fragi.2021.695218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/22/2021] [Indexed: 01/08/2023]
Abstract
Aging has emerged as the greatest and most prevalent risk factor for the development of severe COVID-19 infection and death following exposure to the SARS-CoV-2 virus. The presence of multiple co-existing chronic diseases and conditions of aging further enhances this risk. Biological aging not only enhances the risk of chronic diseases, but the presence of such conditions further accelerates varied biological processes or "hallmarks" implicated in aging. Given growing evidence that it is possible to slow the rate of many biological aging processes using pharmacological compounds has led to the proposal that such geroscience-guided interventions may help enhance immune resilience and improve outcomes in the face of SARS-CoV-2 infection. Our review of the literature indicates that most, if not all, hallmarks of aging may contribute to the enhanced COVID-19 vulnerability seen in frail older adults. Moreover, varied biological mechanisms implicated in aging do not function in isolation from each other, and exhibit intricate effects on each other. With all of these considerations in mind, we highlight limitations of current strategies mostly focused on individual single mechanisms, and we propose an approach which is far more multidisciplinary and systems-based emphasizing network topology of biological aging and geroscience-guided approaches to COVID-19.
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Affiliation(s)
- Alan Landay
- Department of Medicine, Rush School of Medicine, Chicago, IL, United States
| | - Jenna M. Bartley
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Dishary Banerjee
- Engineering Science and Mechanics Department, The Huck Institutes of the Life Sciences, Penn State University, University Park, PA, United States
| | - Geneva Hargis
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Laura Haynes
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Ali Keshavarzian
- Division of Digestive Diseases, Departments of Medicine, Pharmacology, Molecular Biophysics and Physiology, Rush University Medical Center, Chicago, IL, United States
| | - Chia-Ling Kuo
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Connecticut Convergence Institute for Translation in Regenerative Engineering, Storrs, CT, United States
| | - Oh Sung Kwon
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Kinesiology, University of Connecticut, Storrs, CT, United States
| | - Sheng Li
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Shuzhao Li
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States
| | - Julia Oh
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Ibrahim Tarik Ozbolat
- Engineering Science and Mechanics Department, The Huck Institutes of the Life Sciences, Penn State University, University Park, PA, United States
- Biomedical Engineering Department, Neurosurgery Department, Materials Research Institute, Penn State University, University Park, PA, United States
| | - Duygu Ucar
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Ming Xu
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Xudong Yao
- Department of Chemistry, University of Connecticut, Storrs, CT, United States
| | - Derya Unutmaz
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States
| | - George A. Kuchel
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
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Exploring the Connection between Porphyromonas gingivalis and Neurodegenerative Diseases: A Pilot Quantitative Study on the Bacterium Abundance in Oral Cavity and the Amount of Antibodies in Serum. Biomolecules 2021; 11:biom11060845. [PMID: 34204019 PMCID: PMC8229521 DOI: 10.3390/biom11060845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/01/2021] [Accepted: 06/03/2021] [Indexed: 12/21/2022] Open
Abstract
Recent studies support the hypothesis that microbes can seed some Alzheimer’s disease (AD) cases, leading to inflammation and overproduction of amyloid peptides. Porphyromonas gingivalis (Pg) is a keystone pathogen of chronic periodontitis and has been identified as risk factor for the development and progression of AD. The present preliminary study aimed to quantify Pg abundance in neurodegenerative disease (ND) patients compared with neurologic patients without neurodegenerative disorders (no-ND) and healthy controls (HC) to determine possible association between Pg abundance and neurodegenerative process. Pg was quantified on DNA extracted from the oral samples of 49 patients and 29 HC by quantitative polymerase chain reaction (qPCR). Anti-Pg antibodies were also detected on patient serum samples by enzyme-linked immunosorbent assays (ELISA). The Pg abundance in the oral cavity was significantly different among groups (p = 0.004). It was higher in ND than no-ND (p = 0.010) and HC (p = 0.008). The Pg abundance was correlated with the antibodies (p = 0.001) with different slopes between ND and no-ND (p = 0.037). Pg abundance was not correlated with oral indices and comorbidities. These results extend our understanding of the association between oral pathogens and AD to other neurodegenerative processes, confirming the hypothesis that oral pathogens can induce an antibody systemic response, influencing the progression of the disease.
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Kaur S, Aballay A. G-Protein-Coupled Receptor SRBC-48 Protects against Dendrite Degeneration and Reduced Longevity Due to Infection. Cell Rep 2021; 31:107662. [PMID: 32433971 DOI: 10.1016/j.celrep.2020.107662] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 03/06/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023] Open
Abstract
Increasing evidence suggests that deficient immune modulation and microbial infections underline neurodegeneration, but the mechanisms remain obscure. Here, we show that the G-protein-coupled receptor (GPCR) SRBC-48, which belongs to the class BC serpentine receptors, has a protective role in Caenorhabditis elegans dendrite degeneration caused by Pseudomonas aeruginosa infection. Our results indicate that SRBC-48 functions in a cell-autonomous manner in AWC neurons to protect against infection-associated dendrite degeneration. The absence of SRBC-48 results in a reduced lifespan caused by a pathogen infection early in life that induces dendrite degeneration. The decreased longevity in animals deficient in SRBC-48 is due to uncontrolled activation of immune genes, particularly those regulated by the FOXO family transcription factor DAF-16 that is part of the insulin/insulin-like growth factor (IGF)-1 receptor homolog DAF-2. These results reveal how an infection early in life can not only induce dendrite degeneration but also reduce lifespan.
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Affiliation(s)
- Supender Kaur
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Alejandro Aballay
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR 97239, USA.
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Bloemendaal M, Szopinska-Tokov J, Belzer C, Boverhoff D, Papalini S, Michels F, van Hemert S, Arias Vasquez A, Aarts E. Probiotics-induced changes in gut microbial composition and its effects on cognitive performance after stress: exploratory analyses. Transl Psychiatry 2021; 11:300. [PMID: 34016947 PMCID: PMC8137885 DOI: 10.1038/s41398-021-01404-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 03/24/2021] [Accepted: 04/21/2021] [Indexed: 02/04/2023] Open
Abstract
Stress negatively affects cognitive performance. Probiotics remediate somatic and behavioral stress responses, hypothetically by acting on the gut microbiota. Here, in exploratory analyses, we assessed gut microbial alterations after 28-days supplementation of multi-strain probiotics (EcologicBarrier consisting of Lactobacilli, Lactococci, and Bifidobacteria in healthy, female subjects (probiotics group n = 27, placebo group n = 29). In an identical pre-session and post-session, subjects performed a working memory task before and after an acute stress intervention. Global gut microbial beta diversity changed over time, but we were not able to detect differences between intervention groups. At the taxonomic level, Time by Intervention interactions were not significant after multiple comparison correction; the relative abundance of eight genera in the probiotics group was higher (uncorrected) relative to the placebo group: Butyricimonas, Parabacteroides, Alistipes, Christensenellaceae_R-7_group, Family_XIII_AD3011_group, Ruminococcaceae_UCG-003, Ruminococcaceae_UCG-005, and Ruminococcaceae_UCG-010. In a second analysis step, association analyses were done only within this selection of microbial genera, revealing the probiotics-induced change in genus Ruminococcaceae_UCG-003 was significantly associated with probiotics' effect on stress-induced working memory changes (rspearman(27) = 0.565; pFDR = 0.014) in the probiotics group only and independent of potential confounders (i.e., age, BMI, and baseline dietary fiber intake). That is subjects with a higher increase in Ruminococcaceae_UCG-003 abundance after probiotics were also more protected from negative effects of stress on working memory after probiotic supplementation. The bacterial taxa showing an increase in relative abundance in the probiotics group are plant fiber degrading bacteria and produce short-chain fatty acids that are known for their beneficial effect on gut and brain health, e.g., maintaining intestinal-barrier and blood-brain-barrier integrity. This study shows that gut microbial alterations, modulated through probiotics use, are related to improved cognitive performance in acute stress circumstances.
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Affiliation(s)
- Mirjam Bloemendaal
- Departments of Psychiatry and Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Joanna Szopinska-Tokov
- Departments of Psychiatry and Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands
| | - David Boverhoff
- Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands
| | - Silvia Papalini
- Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands
- Laboratory for Biological Psychology, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Franziska Michels
- Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands
| | | | - Alejandro Arias Vasquez
- Departments of Psychiatry and Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Esther Aarts
- Donders Institute for Brain Cognition and Behaviour, Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, the Netherlands
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Host-commensal interaction promotes health and lifespan in Caenorhabditis elegans through the activation of HLH-30/TFEB-mediated autophagy. Aging (Albany NY) 2021; 13:8040-8054. [PMID: 33770762 PMCID: PMC8034897 DOI: 10.18632/aging.202885] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 03/13/2021] [Indexed: 11/25/2022]
Abstract
Gut homeostasis is maintained by the close interaction between commensal intestinal microbiota and the host, affecting the most complex physiological processes, such as aging. Some commensal bacteria with the potential to promote healthy aging arise as attractive candidates for the development of pro-longevity probiotics. Here, we showed that heat-inactivated human commensal Lactobacillus fermentum BGHV110 (BGHV110) extends the lifespan of Caenorhabditis elegans and improves age-related physiological features, including locomotor function and lipid metabolism. Mechanistically, we found that BGHV110 promotes HLH-30/TFEB-dependent autophagy to delay aging, as longevity assurance was completely abolished in the mutant lacking HLH-30, a major autophagy regulator in C. elegans. Moreover, we observed that BGHV110 partially decreased the content of lipid droplets in an HLH-30-dependent manner and, at the same time, slightly increased mitochondrial activity. In summary, this study demonstrates that specific factors from commensal bacteria can be used to exploit HLH-30/TFEB-mediated autophagy in order to promote longevity and fitness of the host.
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Janiak MC, Montague MJ, Villamil CI, Stock MK, Trujillo AE, DePasquale AN, Orkin JD, Bauman Surratt SE, Gonzalez O, Platt ML, Martínez MI, Antón SC, Dominguez-Bello MG, Melin AD, Higham JP. Age and sex-associated variation in the multi-site microbiome of an entire social group of free-ranging rhesus macaques. MICROBIOME 2021; 9:68. [PMID: 33752735 PMCID: PMC7986251 DOI: 10.1186/s40168-021-01009-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/02/2021] [Indexed: 05/07/2023]
Abstract
BACKGROUND An individual's microbiome changes over the course of its lifetime, especially during infancy, and again in old age. Confounding factors such as diet and healthcare make it difficult to disentangle the interactions between age, health, and microbial changes in humans. Animal models present an excellent opportunity to study age- and sex-linked variation in the microbiome, but captivity is known to influence animal microbial abundance and composition, while studies of free-ranging animals are typically limited to studies of the fecal microbiome using samples collected non-invasively. Here, we analyze a large dataset of oral, rectal, and genital swabs collected from 105 free-ranging rhesus macaques (Macaca mulatta, aged 1 month-26 years), comprising one entire social group, from the island of Cayo Santiago, Puerto Rico. We sequenced 16S V4 rRNA amplicons for all samples. RESULTS Infant gut microbial communities had significantly higher relative abundances of Bifidobacterium and Bacteroides and lower abundances of Ruminococcus, Fibrobacter, and Treponema compared to older age groups, consistent with a diet high in milk rather than solid foods. The genital microbiome varied widely between males and females in beta-diversity, taxonomic composition, and predicted functional profiles. Interestingly, only penile, but not vaginal, microbiomes exhibited distinct age-related changes in microbial beta-diversity, taxonomic composition, and predicted functions. Oral microbiome composition was associated with age, and was most distinctive between infants and other age classes. CONCLUSIONS Across all three body regions, with notable exceptions in the penile microbiome, while infants were distinctly different from other age groups, microbiomes of adults were relatively invariant, even in advanced age. While vaginal microbiomes were exceptionally stable, penile microbiomes were quite variable, especially at the onset of reproductive age. Relative invariance among adults, including elderly individuals, is contrary to findings in humans and mice. We discuss potential explanations for this observation, including that age-related microbiome variation seen in humans may be related to changes in diet and lifestyle. Video abstract.
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Affiliation(s)
- Mareike C Janiak
- Department of Anthropology and Archaeology, University of Calgary, Alberta, Canada.
- Alberta Children's Hospital Research Institute, Alberta, Canada.
- Department of Anthropology, New York University, New York, USA.
- School of Science, Engineering and Environment, University of Salford, Salford, UK.
| | - Michael J Montague
- Department of Neuroscience, University of Pennsylvania, Philadelphia, PA, USA
| | - Catalina I Villamil
- School of Chiropractic, Universidad Central del Caribe, Bayamón, Puerto Rico
| | - Michala K Stock
- Department of Sociology and Anthropology, Metropolitan State University of Denver, Denver, CO, USA
| | - Amber E Trujillo
- Department of Anthropology, New York University, New York, USA
- New York Consortium in Evolutionary Primatology, New York, NY, USA
| | - Allegra N DePasquale
- Department of Anthropology and Archaeology, University of Calgary, Alberta, Canada
| | - Joseph D Orkin
- Institut de Biologia Evolutiva, Universitat Pompeu Fabra-CSIC, Barcelona, Spain
| | | | - Olga Gonzalez
- Disease Intervention and Prevention, Southwest National Primate Research Center, San Antonio, TX, USA
| | - Michael L Platt
- Department of Neuroscience, University of Pennsylvania, Philadelphia, PA, USA
| | - Melween I Martínez
- Caribbean Primate Research Center, University of Puerto Rico, San Juan, Puerto Rico
| | - Susan C Antón
- Department of Anthropology, New York University, New York, USA
- New York Consortium in Evolutionary Primatology, New York, NY, USA
| | - Maria Gloria Dominguez-Bello
- Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ, USA
- Department of Anthropology, Rutgers University, New Brunswick, NJ, USA
| | - Amanda D Melin
- Department of Anthropology and Archaeology, University of Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, Alberta, Canada
- Department of Medical Genetics, University of Calgary, Alberta, Canada
| | - James P Higham
- Department of Anthropology, New York University, New York, USA
- New York Consortium in Evolutionary Primatology, New York, NY, USA
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45
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Cai Q, Ji S, Li M, Zheng S, Zhou X, Guo H, Deng S, Zhu J, Li D, Xie Z. Theaflavin-regulated Imd condensates control Drosophila intestinal homeostasis and aging. iScience 2021; 24:102150. [PMID: 33665569 PMCID: PMC7905455 DOI: 10.1016/j.isci.2021.102150] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/12/2020] [Accepted: 02/02/2021] [Indexed: 12/21/2022] Open
Abstract
Black tea is the most widely consumed tea drink in the world and has consistently been reported to possess anti-aging benefits. However, whether theaflavins, one type of the characteristic phytochemicals in black tea extracts, are involved in regulating aging and lifespan in consumers remains largely unknown. In this study, we show that theaflavins play a beneficial role in preventing age-onset intestinal leakage and dysbiosis, thus delaying aging in Drosophila. Mechanistically, theaflavins regulate the condensate assembly of Imd to negatively govern the overactivation of Imd signals in fruit fly intestines. In addition, theaflavins prevent DSS-induced colitis in mice, suggesting theaflavins play a role in modulating intestinal integrity. Overall, our study reveals a molecular mechanism by which theaflavins regulate gut homeostasis likely through controlling Imd coalescence.
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Affiliation(s)
- Qingshuang Cai
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Shanming Ji
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Mengwan Li
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Sen Zheng
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Xiuhong Zhou
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Huimin Guo
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Siyu Deng
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Junyan Zhu
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Daxiang Li
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Zhongwen Xie
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
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46
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Lorente-Picón M, Laguna A. New Avenues for Parkinson's Disease Therapeutics: Disease-Modifying Strategies Based on the Gut Microbiota. Biomolecules 2021; 11:433. [PMID: 33804226 PMCID: PMC7998286 DOI: 10.3390/biom11030433] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 12/13/2022] Open
Abstract
Parkinson's disease (PD) is a multifactorial neurodegenerative disorder that currently affects 1% of the population over the age of 60 years, and for which no disease-modifying treatments exist. Neurodegeneration and neuropathology in different brain areas are manifested as both motor and non-motor symptoms in patients. Recent interest in the gut-brain axis has led to increasing research into the gut microbiota changes in PD patients and their impact on disease pathophysiology. As evidence is piling up on the effects of gut microbiota in disease development and progression, another front of action has opened up in relation to the potential usage of microbiota-based therapeutic strategies in treating gastrointestinal alterations and possibly also motor symptoms in PD. This review provides status on the different strategies that are in the front line (i.e., antibiotics; probiotics; prebiotics; synbiotics; dietary interventions; fecal microbiota transplantation, live biotherapeutic products), and discusses the opportunities and challenges the field of microbiome research in PD is facing.
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Affiliation(s)
- Marina Lorente-Picón
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute (VHIR)-Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Ariadna Laguna
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute (VHIR)-Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
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47
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Watson MD, Cross BL, Grosicki GJ. Evidence for the Contribution of Gut Microbiota to Age-Related Anabolic Resistance. Nutrients 2021; 13:706. [PMID: 33672207 PMCID: PMC7926629 DOI: 10.3390/nu13020706] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/08/2021] [Accepted: 02/19/2021] [Indexed: 12/11/2022] Open
Abstract
Globally, people 65 years of age and older are the fastest growing segment of the population. Physiological manifestations of the aging process include undesirable changes in body composition, declines in cardiorespiratory fitness, and reductions in skeletal muscle size and function (i.e., sarcopenia) that are independently associated with mortality. Decrements in muscle protein synthetic responses to anabolic stimuli (i.e., anabolic resistance), such as protein feeding or physical activity, are highly characteristic of the aging skeletal muscle phenotype and play a fundamental role in the development of sarcopenia. A more definitive understanding of the mechanisms underlying this age-associated reduction in anabolic responsiveness will help to guide promyogenic and function promoting therapies. Recent studies have provided evidence in support of a bidirectional gut-muscle axis with implications for aging muscle health. This review will examine how age-related changes in gut microbiota composition may impact anabolic response to protein feeding through adverse changes in protein digestion and amino acid absorption, circulating amino acid availability, anabolic hormone production and responsiveness, and intramuscular anabolic signaling. We conclude by reviewing literature describing lifestyle habits suspected to contribute to age-related changes in the microbiome with the goal of identifying evidence-informed strategies to preserve microbial homeostasis, anabolic sensitivity, and skeletal muscle with advancing age.
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Affiliation(s)
| | | | - Gregory J. Grosicki
- Biodynamics and Human Performance Center, Georgia Southern University (Armstrong Campus), Savannah, GA 31419, USA; (M.D.W.); (B.L.C.)
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48
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Ross CN, Reveles KR. Feasibility of fecal microbiota transplantation via oral gavage to safely alter gut microbiome composition in marmosets. Am J Primatol 2020; 82:e23196. [PMID: 32970852 PMCID: PMC7679041 DOI: 10.1002/ajp.23196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/17/2020] [Accepted: 08/22/2020] [Indexed: 11/10/2022]
Abstract
Disruption of microbial communities within human hosts has been associated with infection, obesity, cognitive decline, cancer risk and frailty, suggesting that microbiome-targeted therapies may be an option for improving healthspan and lifespan. The objectives of this study were to determine the feasibility of delivering fecal microbiota transplants (FMTs) to marmosets via oral gavage and to evaluate if alteration of the gut microbiome post-FMT could be achieved. This was a prospective study of marmosets housed at the Barshop Institute for Longevity and Aging Studies in San Antonio, Texas. Eligible animals included healthy young adult males (age 2-5 years) with no recent medication use. Stool from two donors was combined and administered in 0.5 ml doses to five young recipients once weekly for 3 weeks. Safety outcomes and alterations in the gut microbiome composition via 16S ribosomal RNA sequencing were compared at baseline and monthly up to 6 months post-FMT. Overall, significant differences in the percent relative abundance was seen in FMT recipients at the phylum and family levels from baseline to 1 month and baseline to 6 months post-FMT. In permutational multivariate analysis of variance analyses, treatment status (donor vs. recipient) (p = .056) and time course (p = .019) predicted β diversity (p = .056). The FMT recipients did not experience any negative health outcomes over the course of the treatment. FMT via oral gavage was safe to administer to young adult marmosets. The marmoset microbiome may be altered by FMT; however, progressive changes in the microbiome are strongly driven by the host and its baseline microbiome composition.
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Affiliation(s)
- Corinna N Ross
- Department of Science and Mathematics, Texas A&M University San Antonio, San Antonio, Texas, USA
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, Texas, USA
- Barshop Institute for Longevity and Aging Research, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Kelly R Reveles
- College of Pharmacy, The University of Texas at Austin, Austin, Texas, USA
- Pharmacotherapy Education & Research Center, University of Texas Health San Antonio, San Antonio, Texas, USA
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49
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Stojković D, Kostić M, Smiljković M, Aleksić M, Vasiljević P, Nikolić M, Soković M. Linking Antimicrobial Potential of Natural Products Derived from Aquatic Organisms and Microbes Involved in Alzheimer's Disease - A Review. Curr Med Chem 2020. [PMID: 29521212 DOI: 10.2174/0929867325666180309103645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The following review is oriented towards microbes linked to Alzheimer's disease (AD) and antimicrobial effect of compounds and extracts derived from aquatic organisms against specific bacteria, fungi and viruses which were found previously in patients suffering from AD. Major group of microbes linked to AD include bacteria: Chlamydia pneumoniae, Helicobacter pylori, Porphyromonas gingivalis, Fusobacterium nucleatum, Prevotella intermedia, Actinomyces naeslundii, spirochete group; fungi: Candida sp., Cryptococcus sp., Saccharomyces sp., Malassezia sp., Botrytis sp., and viruses: herpes simplex virus type 1 (HSV-1), Human cytomegalovirus (CMV), hepatitis C virus (HCV). In the light of that fact, this review is the first to link antimicrobial potential of aquatic organisms against these sorts of microbes. This literature review might serve as a starting platform to develop novel supportive therapy for patients suffering from AD and to possibly prevent escalation of the disease in patients already having high-risk factors for AD occurrence.
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Affiliation(s)
- Dejan Stojković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina Kostić
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marija Smiljković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Milena Aleksić
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Nis, Visegradska 33, 18000 Nis, Serbia
| | - Perica Vasiljević
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Nis, Visegradska 33, 18000 Nis, Serbia
| | - Miloš Nikolić
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina Soković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
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50
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Lee HY, Lee SH, Lee JH, Lee WJ, Min KJ. The role of commensal microbes in the lifespan of Drosophila melanogaster. Aging (Albany NY) 2020; 11:4611-4640. [PMID: 31299010 PMCID: PMC6660043 DOI: 10.18632/aging.102073] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/28/2019] [Indexed: 12/21/2022]
Abstract
Commensal microbes have mutualistic relationships with their host and mainly live in the host intestine. There are many studies on the relationships between commensal microbes and host physiology. However, there are inconsistent results on the effects of commensal microbes on host lifespan. To clarify this controversy, we generated axenic flies by using two controlled methods – bleaching and antibiotic treatment – and investigated the relationship between the commensal microbes and host lifespan in Drosophila melanogaster. The removal of microbes by using bleaching and antibiotic treatments without detrimental effects increased fly lifespan. Furthermore, a strain of flies colonized with a high load of microbiota showed a greater effect on lifespan extension when the microbes were eliminated, suggesting that commensal bacteria abundance may be a critical determinant of host lifespan. Consistent with those observations, microbial flora of aged fly gut significantly decreased axenic fly lifespan via an increase in bacterial load rather than through a change of bacterial composition. Our elaborately controlled experiments showed that the elimination of commensal microbes without detrimental side effects increased fly lifespan, and that bacterial load was a significant determinant of lifespan. Furthermore, our results indicate the presence of a deterministic connection between commensal microbes and host lifespan.
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Affiliation(s)
- Hye-Yeon Lee
- Department of Biological Sciences, Inha University, Incheon 22212, South Korea
| | - Shin-Hae Lee
- Department of Biological Sciences, Inha University, Incheon 22212, South Korea
| | - Ji-Hyeon Lee
- Department of Biological Sciences, Inha University, Incheon 22212, South Korea
| | - Won-Jae Lee
- School of Biological Sciences, Seoul National University, Seoul 08826, South Korea
| | - Kyung-Jin Min
- Department of Biological Sciences, Inha University, Incheon 22212, South Korea
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