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Zhang L, Wei J, Liu X, Li D, Pang X, Chen F, Cao H, Lei P. Gut microbiota-astrocyte axis: new insights into age-related cognitive decline. Neural Regen Res 2025; 20:990-1008. [PMID: 38989933 DOI: 10.4103/nrr.nrr-d-23-01776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 03/04/2024] [Indexed: 07/12/2024] Open
Abstract
With the rapidly aging human population, age-related cognitive decline and dementia are becoming increasingly prevalent worldwide. Aging is considered the main risk factor for cognitive decline and acts through alterations in the composition of the gut microbiota, microbial metabolites, and the functions of astrocytes. The microbiota-gut-brain axis has been the focus of multiple studies and is closely associated with cognitive function. This article provides a comprehensive review of the specific changes that occur in the composition of the gut microbiota and microbial metabolites in older individuals and discusses how the aging of astrocytes and reactive astrocytosis are closely related to age-related cognitive decline and neurodegenerative diseases. This article also summarizes the gut microbiota components that affect astrocyte function, mainly through the vagus nerve, immune responses, circadian rhythms, and microbial metabolites. Finally, this article summarizes the mechanism by which the gut microbiota-astrocyte axis plays a role in Alzheimer's and Parkinson's diseases. Our findings have revealed the critical role of the microbiota-astrocyte axis in age-related cognitive decline, aiding in a deeper understanding of potential gut microbiome-based adjuvant therapy strategies for this condition.
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Affiliation(s)
- Lan Zhang
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Jingge Wei
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Xilei Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin, China
| | - Dai Li
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiaoqi Pang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Fanglian Chen
- Tianjin Neurological Institution, Tianjin Medical University General Hospital, Tianjin, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Ping Lei
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
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Wang Y, Liu S, Cao W, Lv J, Yu C, Huang T, Sun D, Liao C, Pang Y, Pang Z, Yu M, Wang H, Wu X, Liu Y, Gao W, Li L. The metabolic signature of blood lipids: a causal inference study using twins. J Lipid Res 2024; 65:100625. [PMID: 39303494 DOI: 10.1016/j.jlr.2024.100625] [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: 10/26/2023] [Revised: 08/02/2024] [Accepted: 08/16/2024] [Indexed: 09/22/2024] Open
Abstract
Dyslipidemia is one of the cardiometabolic risk factors that influences mortality globally. Unraveling the causality between blood lipids and metabolites and the complex networks connecting lipids, metabolites, and other cardiometabolic traits can help to more accurately reflect the body's metabolic disorders and even cardiometabolic diseases. We conducted targeted metabolomics of 248 metabolites in 437 twins from the Chinese National Twin Registry. Inference about Causation through Examination of FAmiliaL CONfounding (ICE FALCON) analysis was used for causal inference between metabolites and lipid parameters. Bidirectional mediation analysis was performed to explore the linkages between blood lipids, metabolites, and other seven cardiometabolic traits. We identified 44, 1, and 31 metabolites associated with triglyceride (TG), total cholesterol (TC), and high-density lipoprotein-cholesterol (HDL-C), most of which were gut microbiota-derived metabolites. There were 9, 1, and 14 metabolites that showed novel associations with TG, TC, and HDL-C, respectively. ICE FALCON analysis found that TG and HDL-C may have a predicted causal effect on 23 and six metabolites, respectively, and one metabolite may have a predicted causal effect on TG. Mediation analysis discovered 14 linkages connecting blood lipids, metabolites, and other cardiometabolic traits. Our study highlights the significance of gut microbiota-derived metabolites in lipid metabolism. Most of the identified cross-sectional associations may be due to the lipids having a predicted causal effect on metabolites, but not vice versa, nor are they due to family confounding. These findings shed new light on lipid metabolism and personalized management of cardiometabolic diseases.
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Affiliation(s)
- Yutong Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China
| | - Shunkai Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China
| | - Weihua Cao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China
| | - Jun Lv
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China; Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing, China
| | - Canqing Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China; Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing, China
| | - Tao Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China
| | - Dianjianyi Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China; Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing, China
| | - Chunxiao Liao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China; Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing, China
| | - Yuanjie Pang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China
| | - Zengchang Pang
- Qingdao Center for Disease Control and Prevention, Qingdao, China
| | - Min Yu
- Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Hua Wang
- Jiangsu Center for Disease Control and Prevention, Nanjing, China
| | - Xianping Wu
- Sichuan Center for Disease Control and Prevention, Chengdu, China
| | - Yu Liu
- Heilongjiang Center for Disease Control and Prevention, Harbin, China
| | - Wenjing Gao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China.
| | - Liming Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China; Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing, China.
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Yin Z, Fu L, Wang Y, Tai S. Impact of gut microbiota on cardiac aging. Arch Gerontol Geriatr 2024; 128:105639. [PMID: 39312851 DOI: 10.1016/j.archger.2024.105639] [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: 08/02/2024] [Revised: 09/05/2024] [Accepted: 09/12/2024] [Indexed: 09/25/2024]
Abstract
Recent research has suggested imbalances in gut microbiota composition as contributors to cardiac aging. An individual's physical condition, along with lifestyle-associated factors, including diet and medication, are significant determinants of gut microbiota composition. This review discusses evidence of bidirectional associations between aging and gut microbiota, identifying gut microbiota-derived metabolites as potential regulators of cardiac aging. It summarizes the effects of gut microbiota on cardiac aging diseases, including cardiac hypertrophy and fibrosis, heart failure, and atrial fibrillation. Furthermore, this review discusses the potential anti-aging effects of modifying gut microbiota composition through dietary and pharmacological interventions. Lastly, it underscores critical knowledge gaps and outlines future research directions. Given the current limited understanding of the direct relationship between gut microbiota and cardiac aging, there is an urgent need for preclinical and clinical investigations into the mechanistic interactions between gut microbiota and cardiac aging. Such endeavors hold promise for shedding light on the pathophysiology of cardiac aging and uncovering new therapeutic targets for cardiac aging diseases.
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Affiliation(s)
- Zhiyi Yin
- Department of Blood Transfusion, The Second Xiangya Hospital of Central South University, No. 139, Middle Renmin Road, Changsha, Hunan 410011, China
| | - Liyao Fu
- Hunan Key Laboratory of Cardiometabolic Medicine, Department of Cardiology, The Second Xiangya Hospital of Central South University, No. 139, Middle Renmin Road, Changsha, Hunan 410011, China
| | - Yongjun Wang
- Department of Blood Transfusion, The Second Xiangya Hospital of Central South University, No. 139, Middle Renmin Road, Changsha, Hunan 410011, China.
| | - Shi Tai
- Hunan Key Laboratory of Cardiometabolic Medicine, Department of Cardiology, The Second Xiangya Hospital of Central South University, No. 139, Middle Renmin Road, Changsha, Hunan 410011, China.
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Alemu BK, Wu L, Azeze GG, Lau SL, Wang Y, Wang CC. Microbiota-targeted interventions and clinical implications for maternal-offspring health: An umbrella review of systematic reviews and meta-analyses of randomised controlled trials. J Glob Health 2024; 14:04177. [PMID: 39269153 PMCID: PMC11395958 DOI: 10.7189/jogh.14.04177] [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: 09/15/2024] Open
Abstract
Background Microbes in the human body are the determinants of life-long health and disease. Microbiome acquisition starts in utero and matures during early childhood through breastfeeding. However, maternal gut dysbiosis affects the maternal-offspring microbiome interplay. Lines of evidence on dysbiosis-targeted interventions and their effect on maternal-offspring health and gut microbiome are inconsistent and inconclusive. Therefore, this study summarised studies to identify the most common microbiota-targeted intervention during pregnancy and lactation and to comprehensively evaluate its effects on maternal and offspring health. Methods This umbrella review was conducted by systematically searching databases such as PubMed and the Web of Science from inception to 2 September 2023. The quality was assessed using the Assessment of Multiple Systematic Reviews-2 checklist. The Grading of Recommendations Assessment, Development, and Evaluation was used for grading the strength and certainty of the studies. The overlap of primary studies was quantified by the corrected covered area score. Results A total of 17 systematic reviews and meta-analyses with 219 randomised controlled trials, 39 113 mothers, and 20 915 infants were included in this study. About 88% of studies had moderate and above certainty of evidence. Probiotics were the most common and effective interventions at reducing gestational diabetes risk (fasting blood glucose with the mean difference (MD) = -2.92, -0.05; I2 = 45, 98.97), fasting serum insulin (MD = -2.3, -2.06; I2 = 45, 77), glycated haemoglobin (Hb A1c) = -0.16; I2 = 0.00)), Homeostatic Model Assessment of insulin resistance (HOMA-IR) (MD = -20.55, -0.16; I2 = 0.00, 72.00), and lipid metabolism (MD = -5.47, 0.98; I2 = 0.00, 90.65). It was also effective in preventing and treating mastitis (risk ratio (RR) = 0.49; I2 = 2.00), relieving anxiety symptoms (MD = -0.99, 0.01; I2 = 0.00, 70.00), depression in lactation (MD = -0.46, -0.22; I2 = 0.00, 74.00) and reducing recto-vaginal bacterial colonisation (odds ratio (OR) = 0.62; I2 = 4.80), and with no adverse events. It also effectively remodelled the infant gut microbiome (MD = 0.89; I2 = 95.01) and prevented infant allergies. However, studies on pregnancy outcomes and preeclampsia incidences are limited. Conclusions Our findings from high-quality studies identify that probiotics are the most common microbiome interventions during pregnancy and lactation. Probiotics have a strong impact on maternal and offspring health through maintaining gut microbiome homeostasis. However, further studies are needed on the effect of microbiota-targeted interventions on maternal cardiometabolic health, pregnancy, and neonatal outcomes. Registration This umbrella review was registered with PROSPERO, CRD42023437098.
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Affiliation(s)
- Bekalu Kassie Alemu
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
- Department of Midwifery, College of Medicine and Health Sciences, Debre Markos University, Ethiopia
| | - Ling Wu
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
| | - Getnet Gedefaw Azeze
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
- Department of Midwifery, College of Medicine and Health Sciences, Injibara University, Ethiopia
| | - So Ling Lau
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
| | - Yao Wang
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
- LI Ka Shing Institute of Health Sciences; Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
- LI Ka Shing Institute of Health Sciences; Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR
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Boverhoff D, Kool J, Pijnacker R, Ducarmon QR, Zeller G, Shetty S, Sie S, Mulder AC, van der Klis F, Franz E, Mughini-Gras L, van Baarle D, Fuentes S. Profiling the fecal microbiome and its modulators across the lifespan in the Netherlands. Cell Rep 2024; 43:114729. [PMID: 39264809 DOI: 10.1016/j.celrep.2024.114729] [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: 02/27/2024] [Revised: 05/23/2024] [Accepted: 08/22/2024] [Indexed: 09/14/2024] Open
Abstract
Defining what constitutes a healthy microbiome throughout our lives remains an ongoing challenge. Understanding to what extent host and environmental factors can influence it has been the primary motivation for large population studies worldwide. Here, we describe the fecal microbiome of 3,746 individuals (0-87 years of age) in a nationwide study in the Netherlands, in association with extensive questionnaires. We validate previous findings, such as infant-adult trajectories, and explore the collective impact of our variables, which explain over 40% of the variation in microbiome composition. We identify associations with less explored factors, particularly those ethnic related, which show the largest impact on the adult microbiome composition, diversity, metabolic profiles, and CAZy (carbohydrate-active enzyme) repertoires. Understanding the sources of microbiome variability is crucial, given its potential as a modifiable target with therapeutic possibilities. With this work, we aim to serve as a foundational element for the design of health interventions and fundamental research.
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Affiliation(s)
- David Boverhoff
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands; Virology & Immunology Research, Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, Groningen, the Netherlands
| | - Jolanda Kool
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Roan Pijnacker
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Quinten R Ducarmon
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Georg Zeller
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Sudarshan Shetty
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands; Virology & Immunology Research, Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, Groningen, the Netherlands
| | - Stephan Sie
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Annemieke Christine Mulder
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Fiona van der Klis
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Eelco Franz
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Lapo Mughini-Gras
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands; Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Debbie van Baarle
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands; Virology & Immunology Research, Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, Groningen, the Netherlands
| | - Susana Fuentes
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
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Ravikrishnan A, Wijaya I, Png E, Chng KR, Ho EXP, Ng AHQ, Mohamed Naim AN, Gounot JS, Guan SP, Hanqing JL, Guan L, Li C, Koh JY, de Sessions PF, Koh WP, Feng L, Ng TP, Larbi A, Maier AB, Kennedy BK, Nagarajan N. Gut metagenomes of Asian octogenarians reveal metabolic potential expansion and distinct microbial species associated with aging phenotypes. Nat Commun 2024; 15:7751. [PMID: 39237540 PMCID: PMC11377447 DOI: 10.1038/s41467-024-52097-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 08/23/2024] [Indexed: 09/07/2024] Open
Abstract
While rapid demographic changes in Asia are driving the incidence of chronic aging-related diseases, the limited availability of high-quality in vivo data hampers our ability to understand complex multi-factorial contributions, including gut microbial, to healthy aging. Leveraging a well-phenotyped cohort of community-living octogenarians in Singapore, we used deep shotgun-metagenomic sequencing for high-resolution taxonomic and functional characterization of their gut microbiomes (n = 234). Joint species-level analysis with other Asian cohorts identified distinct age-associated shifts characterized by reduction in microbial richness, and specific Alistipes and Bacteroides species enrichment (e.g., Alistipes shahii and Bacteroides xylanisolvens). Functional analysis confirmed these changes correspond to metabolic potential expansion in aging towards alternate pathways synthesizing and utilizing amino-acid precursors, vis-à-vis dominant microbial guilds producing butyrate in gut from pyruvate (e.g., Faecalibacterium prausnitzii, Roseburia inulinivorans). Extending these observations to key clinical markers helped identify >10 robust microbial associations to inflammation, cardiometabolic and liver health, including potential probiotic species (e.g., Parabacteroides goldsteinii) and pathobionts (e.g., Klebsiella pneumoniae), highlighting the microbiome's role as biomarkers and potential targets for promoting healthy aging.
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Affiliation(s)
- Aarthi Ravikrishnan
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Indrik Wijaya
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Eileen Png
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Kern Rei Chng
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Eliza Xin Pei Ho
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Amanda Hui Qi Ng
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Ahmad Nazri Mohamed Naim
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Jean-Sebastien Gounot
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Shou Ping Guan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
| | - Jasinda Lee Hanqing
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
| | - Lihuan Guan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
| | - Chenhao Li
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Jia Yu Koh
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Paola Florez de Sessions
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore
| | - Woon-Puay Koh
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
- Singapore Institute for Clinical Sciences (SICS), Agency for Science Technology and Research (A*STAR), 30 Medical Drive, Brenner Centre for Molecular Medicine, Singapore, 117609, Republic of Singapore
| | - Lei Feng
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
| | - Tze Pin Ng
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
| | - Anis Larbi
- Singapore Immunology Network (SigN), Agency for Science Technology and Research (A*STAR), 8A Biomedical Grove, Immunos, Singapore, 138648, Republic of Singapore
| | - Andrea B Maier
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
- Department of Human Movement Sciences, @AgeAmsterdam, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Brian K Kennedy
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore
| | - Niranjan Nagarajan
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore.
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore.
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Kang JW, Khatib LA, Heston MB, Dilmore AH, Labus JS, Deming Y, Schimmel L, Blach C, McDonald D, Gonzalez A, Bryant M, Sanders K, Schwartz A, Ulland TK, Johnson SC, Asthana S, Carlsson CM, Chin NA, Blennow K, Zetterberg H, Rey FE, Kaddurah-Daouk R, Knight R, Bendlin BB. Gut Microbiome Compositional and Functional Features Associate with Alzheimer's Disease Pathology. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.09.04.24313004. [PMID: 39281749 PMCID: PMC11398448 DOI: 10.1101/2024.09.04.24313004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
BACKGROUND The gut microbiome is a potentially modifiable factor in Alzheimer's disease (AD); however, understanding of its composition and function regarding AD pathology is limited. METHODS Shallow-shotgun metagenomic data was used to analyze fecal microbiome from participants enrolled in the Wisconsin Microbiome in Alzheimer's Risk Study, leveraging clinical data and cerebrospinal fluid (CSF) biomarkers. Differential abundance and ordinary least squares regression analyses were performed to find differentially abundant gut microbiome features and their associations with CSF biomarkers of AD and related pathologies. RESULTS Gut microbiome composition and function differed between people with AD and cognitively unimpaired individuals. The compositional difference was replicated in an independent cohort. Differentially abundant gut microbiome features were associated with CSF biomarkers of AD and related pathologies. DISCUSSION These findings enhance our understanding of alterations in gut microbial composition and function in AD, and suggest that gut microbes and their pathways are linked to AD pathology.
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Affiliation(s)
- Jea Woo Kang
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Lora A Khatib
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
- Neurosciences Graduate Program, University of California San Diego, La Jolla, California, USA Address: 9500 Gilman Dr, La Jolla, CA, USA 92093
| | - Margo B Heston
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Amanda H Dilmore
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
| | - Jennifer S Labus
- Integrative Biostatistics and Bioinformatics Core (IBBC) at the Goodman-Luskin Microbiome Center Address: 42-210 CHS, Los Angeles, CA, USA 90095
- G. Oppenheimer Center for Neurobiology of Stress and Resilience Address: 10833 Le Conte Ave, Los Angeles, CA, USA 90095
- UCLA Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at UCLA Address: 100 Medical Plaza, Los Angeles, CA, USA 90095
| | - Yuetiva Deming
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Leyla Schimmel
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA Address: 905 W Main St, Durham, NC, USA 27701
| | - Colette Blach
- Duke Molecular Physiology Institute, Duke University, Durham, NC, USA Address: 300 N Duke St, Durham, NC, USA 27701
| | - Daniel McDonald
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
| | - Antonio Gonzalez
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
| | - MacKenzie Bryant
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
| | - Karenina Sanders
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
| | - Ara Schwartz
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
| | - Tyler K Ulland
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, USA Address: 1685 Highland Ave, Madison, WI, USA 53705
| | - Sterling C Johnson
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Sanjay Asthana
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Cynthia M Carlsson
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Nathaniel A Chin
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden Address: Blå stråket 15, vån 3 SU/Sahlgrenska 413 45 Göteborg, Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden Address: Blå stråket 15, vån 3 SU/Sahlgrenska 413 45 Göteborg, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden Address: Blå stråket 5, 413 45 Göteborg, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK Address: Queen Square, London WC1N 3BG, United Kingdom
- UK Dementia Research Institute at UCL, London, UK Address: 6th Floor, Maple House, Tottenham Ct Rd, London W1T 7NF, United Kingdom
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong, China Address: Units 1501-1502, 1512-1518, 15/F, Building 17W, Hong Kong Science Park, Shatin, N.T., Hong Kong
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
| | - Federico E Rey
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA Address: 1550 Linden Dr, Madison, WI, USA 53706
| | - Rima Kaddurah-Daouk
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA Address: 905 W Main St, Durham, NC, USA 27701
- Duke Institute of Brain Sciences, Duke University, Durham, NC, USA Address: 308 Research Dr, Durham, NC, USA 27710
- Department of Medicine, Duke University, Durham, NC, USA Address: 40 Duke Medicine Circle, 124 Davison Building, Durham, NC, USA 27710
| | - Rob Knight
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA Address: 9461 Gilman Dr, La Jolla, CA, USA 92093
- Center for Microbiome Innovation, Joan and Irwin Jacobs School of Engineering, University of California San Diego, La Jolla, California, USA Address: Franklin Antonio Hall, Jacobs School of Engineering, 9500 Gilman Dr, La Jolla, CA, USA 92093
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA, USA Address: 3235 Voigt Dr, La Jolla, CA, USA 92093
- Halıcıoğlu Data Science Institute, University of California, San Diego, La Jolla, CA, USA Address: 3234 Matthews Ln, La Jolla, CA, USA 92093
- Shu Chien-Gene Lay Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA Address: 3223 Voigt Dr, La Jolla, CA, USA 92093
| | - Barbara B Bendlin
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 600 Highland Ave, J5/1 Mezzanine, Madison, WI, USA 53792
- Wisconsin Alzheimer's Institute, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA Address: 610 Walnut Street, 9th Floor, Madison, WI, USA 53726
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8
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Zhu Y, Yeo EN, Smith KM, Greenberg AS, Rowan S. Aging Modulates the Effect of Dietary Glycemic Index on Gut Microbiota Composition in Mice. J Nutr 2024; 154:2852-2861. [PMID: 39019160 PMCID: PMC11393168 DOI: 10.1016/j.tjnut.2024.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/10/2024] [Accepted: 07/09/2024] [Indexed: 07/19/2024] Open
Abstract
BACKGROUND Gut microbiome composition profoundly impacts host physiology and is modulated by several environmental factors, most prominently diet. The composition of gut microbiota changes over the lifespan, particularly during the earliest and latest stages. However, we know less about diet-aging interactions on the gut microbiome. We previously showed that diets with different glycemic indices, based on the ratio of rapidly digested amylopectin to slowly digested amylose, led to altered composition of gut microbiota in male C57BL/6J mice. OBJECTIVES Here, we examined the role of aging in influencing dietary effects on gut microbiota composition and aimed to identify gut bacterial taxa that respond to diet and aging. METHODS We studied 3 age groups of male C57BL/6J wild-type mice: young (4 mo), middle-aged (13.5 mo), and old (22 mo), all fed either high glycemic (HG) or low glycemic (LG) diets matched for caloric content and macronutrient composition. Fecal microbiome composition was determined by 16S rDNA metagenomic sequencing and was evaluated for changes in α- and β-diversity and bacterial taxa that change by age, diet, or both. RESULTS Young mice displayed lower α-diversity scores than middle-aged counterparts but exhibited more pronounced differences in β-diversity between diets. In contrast, old mice had slightly lower α-diversity scores than middle-aged mice, with significantly higher β-diversity distances. Within-group variance was lowest in young, LG-fed mice and highest in old, HG-fed mice. Differential abundance analysis revealed taxa associated with both aging and diet. Most differential taxa demonstrated significant interactions between diet and aging. Notably, several members of the Lachnospiraceae family increased with aging and HG diet, whereas taxa from the Bacteroides_H genus increased with the LG diet. Akkermansia muciniphila decreased with aging. CONCLUSIONS These findings illustrate the complex interplay between diet and aging in shaping the gut microbiota, potentially contributing to age-related disease.
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Affiliation(s)
- Ying Zhu
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States; Division of Biochemical and Molecular Nutrition, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
| | - Emily N Yeo
- Division of Biochemical and Molecular Nutrition, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States; Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, United States
| | - Kelsey M Smith
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States; Division of Biochemical and Molecular Nutrition, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States
| | - Andrew S Greenberg
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States; Division of Biochemical and Molecular Nutrition, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States; Division of Endocrinology, Diabetes and Metabolism, Tufts University School of Medicine, Boston, MA, United States
| | - Sheldon Rowan
- JM-USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States; Division of Biochemical and Molecular Nutrition, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States; Department of Ophthalmology, Tufts University School of Medicine, Boston, MA, United States.
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9
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Araújo JR, Marques C, Rodrigues C, Calhau C, Faria A. The metabolic and endocrine impact of diet-derived gut microbiota metabolites on ageing and longevity. Ageing Res Rev 2024; 100:102451. [PMID: 39127442 DOI: 10.1016/j.arr.2024.102451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 07/16/2024] [Accepted: 08/06/2024] [Indexed: 08/12/2024]
Abstract
Gut dysbiosis has been recently recognized as a hallmark of ageing. At this stage of life, gut microbiota becomes depleted from bacteria involved in the production of short-chain fatty acids (SCFA), indole and its derivative indole-3-propionic acid (IPA), metabolites shown to improve host glycemic control as well as insulin sensitivity and secretion. Moreover, gut microbiota becomes enriched in pathobiont bacteria involved in the production of imidazole propionate, phenols and trimethylamine, metabolites that promote host insulin resistance and atherosclerosis. The magnitude of these changes is much more pronounced in unhealthy than in healthy ageing. On the other hand, a distinct gut microbiota signature is displayed during longevity, the most prominent being an enrichment in both SCFA and IPA bacterial producers. This short Review discusses, in an innovative and integrative way, cutting-edge research on the composition of gut microorganisms and profile of metabolites secreted by them, that are associated with a healthy and unhealthy ageing pattern and with longevity. A detailed description of the positive or detrimental metabolic effects, in the ageing host, of diet-derived gut microbial metabolites is provided. Finally, microbiota-targeted interventions that counteract gut dysbiosis associated with ageing, are briefly outlined.
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Affiliation(s)
- João R Araújo
- Nutrition & Metabolism, CINTESIS@RISE, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal.
| | - Cláudia Marques
- Nutrition & Metabolism, CINTESIS@RISE, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal.
| | - Catarina Rodrigues
- Nutrition & Metabolism, CHRC, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal.
| | - Conceição Calhau
- Nutrition & Metabolism, CINTESIS@RISE, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal; Unidade Universitária Lifestyle Medicine José de Mello Saúde by NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal.
| | - Ana Faria
- Nutrition & Metabolism, CINTESIS@RISE, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal; Nutrition & Metabolism, CHRC, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa 1169-056, Portugal.
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10
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Chen LA, Boyle K. The Role of the Gut Microbiome in Health and Disease in the Elderly. Curr Gastroenterol Rep 2024; 26:217-230. [PMID: 38642272 PMCID: PMC11282161 DOI: 10.1007/s11894-024-00932-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2024] [Indexed: 04/22/2024]
Abstract
PURPOSE OF REVIEW Growing evidence supports the contribution of age in the composition and function of the gut microbiome, with specific findings associated with health in old age and longevity. RECENT FINDINGS Current studies have associated certain microbiota, such as Butyricimonas, Akkermansia, and Odoribacter, with healthy aging and the ability to survive into extreme old age. Furthermore, emerging clinical and pre-clinical research have shown promising mechanisms for restoring a healthy microbiome in elderly populations through various interventions such as fecal microbiota transplant (FMT), dietary interventions, and exercise programs. Despite several conceptually exciting interventional studies, the field of microbiome research in the elderly remains limited. Specifically, large longitudinal studies are needed to better understand causative relationships between the microbiome and healthy aging. Additionally, individualized approaches to microbiome interventions based on patients' co-morbidities and the underlying functional capacity of their microbiomes are needed to achieve optimal results.
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Affiliation(s)
- Lea Ann Chen
- Division of Gastroenterology and Hepatology, Department of Medicine, Rutgers, New Brunswick, NJ, USA.
| | - Kaitlyn Boyle
- Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
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11
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Pu Y, Sun Z, Zhang H, Huang Q, Wang Z, Mei Z, Wang P, Kong M, Yang W, Lin C, Zhou X, Lin S, Huang Q, Huang L, Sun L, Yuan C, Xu Q, Tang H, Wang X, Zheng Y. Gut microbial features and circulating metabolomic signatures of frailty in older adults. NATURE AGING 2024; 4:1249-1262. [PMID: 39054372 DOI: 10.1038/s43587-024-00678-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 07/03/2024] [Indexed: 07/27/2024]
Abstract
Frailty, a multidimensional indicator of suboptimal aging, reflects cumulative declines across multiple physiological systems. Although age-related changes have been reported in gut microbiota, their role in healthy aging remains unclear. In this study, we calculated frailty index (FI) from 33 health-related items to reflect the overall health status of 1,821 older adults (62-96 years, 55% female) and conducted multi-omics analysis using gut metagenomic sequencing data and plasma metabolomic data. We identified 18 microbial species and 17 metabolites shifted along with frailty severity, with stronger links observed in females. The associations of nine species, including various Clostridium species and Faecalibacterium prausnitzii, with FI were reproducible in two external populations. Plasma glycerol levels, white blood cell count and kidney function partially mediated these associations. A composite microbial score derived from FI significantly predicted 2-year mortality (adjusted hazard ratio across extreme quartiles, 2.86; 95% confidence interval, 1.38-5.93), highlighting the potential of microbiota-based strategies for risk stratification in older adults.
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Affiliation(s)
- Yanni Pu
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhonghan Sun
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hui Zhang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai, China
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingxia Huang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhengdong Wang
- Department of Gastroenterology, Rugao People's Hospital, Rugao, China
| | - Zhendong Mei
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Peilu Wang
- Ministry of Education Key Laboratory of Public Health Safety, School of Public Health, Institute of Nutrition, Fudan University, Shanghai, China
| | - Mengmeng Kong
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenjun Yang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chenhao Lin
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaofeng Zhou
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shuchun Lin
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qiumin Huang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lili Huang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Liang Sun
- Ministry of Education Key Laboratory of Public Health Safety, School of Public Health, Institute of Nutrition, Fudan University, Shanghai, China
| | - Changzheng Yuan
- School of Public Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Qian Xu
- Institute of Gut Microbiota Research and Engineering Development, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huiru Tang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Xiaofeng Wang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai, China.
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China.
| | - Yan Zheng
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China.
- Ministry of Education Key Laboratory of Public Health Safety, School of Public Health, Institute of Nutrition, Fudan University, Shanghai, China.
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China.
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12
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Borrego-Ruiz A, Borrego JJ. Influence of human gut microbiome on the healthy and the neurodegenerative aging. Exp Gerontol 2024; 194:112497. [PMID: 38909763 DOI: 10.1016/j.exger.2024.112497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/16/2024] [Accepted: 06/17/2024] [Indexed: 06/25/2024]
Abstract
The gut microbiome plays a crucial role in host health throughout the lifespan by influencing brain function during aging. The microbial diversity of the human gut microbiome decreases during the aging process and, as a consequence, several mechanisms increase, such as oxidative stress, mitochondrial dysfunction, inflammatory response, and microbial gut dysbiosis. Moreover, evidence indicates that aging and neurodegeneration are closely related; consequently, the gut microbiome may serve as a novel marker of lifespan in the elderly. In this narrative study, we investigated how the changes in the composition of the gut microbiome that occur in aging influence to various neuropathological disorders, such as mild cognitive impairment (MCI), dementia, Alzheimer's disease (AD), and Parkinson's disease (PD); and which are the possible mechanisms that govern the relationship between the gut microbiome and cognitive impairment. In addition, several studies suggest that the gut microbiome may be a potential novel target to improve hallmarks of brain aging and to promote healthy cognition; therefore, current and future therapeutic interventions have been also reviewed.
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Affiliation(s)
- Alejandro Borrego-Ruiz
- Departamento de Psicología Social y de las Organizaciones, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Juan J Borrego
- Departamento de Microbiología, Universidad de Málaga, Málaga, Spain; Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA, Plataforma BIONAND, Málaga, Spain.
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13
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Chang D, Gupta VK, Hur B, Cobo-López S, Cunningham KY, Han NS, Lee I, Kronzer VL, Teigen LM, Karnatovskaia LV, Longbrake EE, Davis JM, Nelson H, Sung J. Gut Microbiome Wellness Index 2 enhances health status prediction from gut microbiome taxonomic profiles. Nat Commun 2024; 15:7447. [PMID: 39198444 PMCID: PMC11358288 DOI: 10.1038/s41467-024-51651-9] [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: 09/25/2023] [Accepted: 08/09/2024] [Indexed: 09/01/2024] Open
Abstract
Recent advancements in translational gut microbiome research have revealed its crucial role in shaping predictive healthcare applications. Herein, we introduce the Gut Microbiome Wellness Index 2 (GMWI2), an enhanced version of our original GMWI prototype, designed as a standardized disease-agnostic health status indicator based on gut microbiome taxonomic profiles. Our analysis involves pooling existing 8069 stool shotgun metagenomes from 54 published studies across a global demographic landscape (spanning 26 countries and six continents) to identify gut taxonomic signals linked to disease presence or absence. GMWI2 achieves a cross-validation balanced accuracy of 80% in distinguishing healthy (no disease) from non-healthy (diseased) individuals and surpasses 90% accuracy for samples with higher confidence (i.e., outside the "reject option"). This performance exceeds that of the original GMWI model and traditional species-level α-diversity indices, indicating a more robust gut microbiome signature for differentiating between healthy and non-healthy phenotypes across multiple diseases. When assessed through inter-study validation and external validation cohorts, GMWI2 maintains an average accuracy of nearly 75%. Furthermore, by reevaluating previously published datasets, GMWI2 offers new insights into the effects of diet, antibiotic exposure, and fecal microbiota transplantation on gut health. Available as an open-source command-line tool, GMWI2 represents a timely, pivotal resource for evaluating health using an individual's unique gut microbial composition.
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Affiliation(s)
- Daniel Chang
- Department of Computer Science and Engineering, University of Minnesota, Minneapolis, MN, USA
| | - Vinod K Gupta
- Microbiomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Benjamin Hur
- Microbiomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Sergio Cobo-López
- Viral Information Institute, San Diego State University, San Diego, CA, USA
| | - Kevin Y Cunningham
- Bioinformatics and Computational Biology Program, University of Minnesota, Minneapolis, MN, USA
| | - Nam Soo Han
- Brain Korea 21 Center for Bio-Health Industry, Department of Food Science and Biotechnology, Chungbuk National University, Cheongju, South Korea
| | - Insuk Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Vanessa L Kronzer
- Division of Rheumatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Levi M Teigen
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, USA
| | | | | | - John M Davis
- Division of Rheumatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Heidi Nelson
- Emeritus, Department of Surgery, Mayo Clinic, Rochester, MN, USA
| | - Jaeyun Sung
- Microbiomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA.
- Division of Rheumatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA.
- Division of Computational Biology, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA.
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14
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Lapauw L, Rutten A, Dupont J, Amini N, Vercauteren L, Derrien M, Raes J, Gielen E. Associations between gut microbiota and sarcopenia or its defining parameters in older adults: A systematic review. J Cachexia Sarcopenia Muscle 2024. [PMID: 39192550 DOI: 10.1002/jcsm.13569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 07/09/2024] [Accepted: 07/18/2024] [Indexed: 08/29/2024] Open
Abstract
Altered gut microbiota (GM) potentially contribute to development or worsening of sarcopenia through a gut-muscle axis. This systematic review aims to compare GM between persons with sarcopenia or low sarcopenia-defining parameters (muscle mass, strength, and physical performance) to those with preserved muscle status, as well as to clarify possible associations between sarcopenia (-defining parameters) and relative abundance (RA) of GM-taxa or GM-(α- or β) diversity indices, in order to clarify whether there is robust evidence of the existence of a GM signature for sarcopenia. This systematic review was conducted according to the PRISMA-reporting guideline and pre-registered on PROSPERO (CRD42021259597). PubMed, Web of Science, Embase, ClinicalTrials.gov, and Cochrane library were searched until 20 July 2023. Included studies reported on GM and sarcopenia or its defining parameters. Observational studies were included with populations of mean age ≥50 years. Thirty-two studies totalling 10 781 persons (58.56% ♀) were included. Thirteen studies defined sarcopenia as a construct. Nineteen studies reported at least one sarcopenia-defining parameter (muscle mass, strength or physical performance). Studies found different GM-taxa at multiple levels to be significantly associated with sarcopenia (n = 4/6), muscle mass (n = 13/14), strength (n = 7/9), and physical performance (n = 3/3); however, directions of associations were heterogeneous and also conflicting for specific GM-taxa. Regarding β-diversity, studies found GM of persons with sarcopenia, low muscle mass, or low strength to cluster differently compared with persons with preserved muscle status. α-diversity was low in persons with sarcopenia or low muscle mass as compared with those with preserved muscle status, indicating low richness and diversity. In line with this, α-diversity was significantly and positively associated with muscle mass (n = 3/4) and muscle strength (n = 2/3). All reported results were significant (P < 0.05). Persons with sarcopenia and low muscle parameters have less rich and diverse GM and can be separated from persons with preserved muscle mass and function based on GM-composition. Sarcopenia and low muscle parameters are also associated with different GM-taxa at multiple levels, but results were heterogeneous and no causal conclusions could be made due to the cross-sectional design of the studies. This emphasizes the need for uniformly designed cross-sectional and longitudinal trials with appropriate GM confounder control in large samples of persons with sarcopenia and clearly defined core outcome sets in order to further explore changes in GM-taxa and to determine a sarcopenia-specific GM-signature.
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Affiliation(s)
- Laurence Lapauw
- Department of Public Health and Primary Care, Division of Gerontology and Geriatrics, KU Leuven, Leuven, Belgium
| | - Aurélie Rutten
- Division of Gerontology and Geriatrics, Zuyderland Medisch Centrum, Sittard, The Netherlands
| | - Jolan Dupont
- Department of Public Health and Primary Care, Division of Gerontology and Geriatrics, KU Leuven, Leuven, Belgium
- Division of Gerontology and Geriatrics, University Hospitals Leuven, Leuven, Belgium
| | - Nadjia Amini
- Department of Public Health and Primary Care, Division of Gerontology and Geriatrics, KU Leuven, Leuven, Belgium
| | - Laura Vercauteren
- Department of Public Health and Primary Care, Division of Gerontology and Geriatrics, KU Leuven, Leuven, Belgium
| | - Muriel Derrien
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
- VIB Center for Microbiology, Leuven, Belgium
| | - Jeroen Raes
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
- VIB Center for Microbiology, Leuven, Belgium
| | - Evelien Gielen
- Department of Public Health and Primary Care, Division of Gerontology and Geriatrics, KU Leuven, Leuven, Belgium
- Division of Gerontology and Geriatrics, Zuyderland Medisch Centrum, Sittard, The Netherlands
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15
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Yang Y, Rao T, Wei S, Cheng J, Zhan Y, Lin T, Chen J, Zhong X, Jiang Y, Yang S. Role of inflammatory cytokines and the gut microbiome in vascular dementia: insights from Mendelian randomization analysis. Front Microbiol 2024; 15:1398618. [PMID: 39247699 PMCID: PMC11380139 DOI: 10.3389/fmicb.2024.1398618] [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: 03/10/2024] [Accepted: 07/10/2024] [Indexed: 09/10/2024] Open
Abstract
Background Both inflammatory cytokines and the gut microbiome are susceptibility factors for vascular dementia (VaD). The trends in the overall changes in the dynamics of inflammatory cytokines and in the composition of the gut microbiome are influenced by a variety of factors, making it difficult to fully explain the different effects of both on the different subtypes of VaD. Therefore, this Mendelian randomization (MR) study identified the inflammatory cytokines and gut microbiome members that influence the risk of developing VaD and their causal effects, and investigated whether inflammatory cytokines are gut microbiome mediators affecting VaD. Methods We obtained pooled genome-wide association study (GWAS) data for 196 gut microbiota and 41 inflammatory cytokines and used GWAS data for six VaD subtypes, namely, VaD (mixed), VaD (multiple infarctions), VaD (other), VaD (subcortical), VaD (sudden onset), and VaD (undefined). We used the inverse-variance weighted (IVW) method as the primary MR analysis method. We conducted sensitivity analyses and reverse MR analyses to examine reverse causal associations, enhancing the reliability and stability of the conclusions. Finally, we used multivariable MR (MVMR) analysis to assess the direct causal effects of inflammatory cytokines and the gut microbiome on the risk of VaD, and performed mediation MR analysis to explore whether inflammatory factors were potential mediators. Results Our two-sample MR study revealed relationships between the risk of six VaD subtypes and inflammatory cytokines and the gut microbiota: 7 inflammatory cytokines and 14 gut microbiota constituents were positively correlated with increased VaD subtype risk, while 2 inflammatory cytokines and 11 gut microbiota constituents were negatively correlated with decreased VaD subtype risk. After Bonferroni correction, interleukin-18 was correlated with an increased risk of VaD (multiple infarctions); macrophage migration inhibitory factor was correlated with an increased risk of VaD (sudden onset); interleukin-4 was correlated with a decreased risk of VaD (other); Ruminiclostridium 6 and Bacillales were positively and negatively correlated with the risk of VaD (undefined), respectively; Negativicutes and Selenomonadales were correlated with a decreased risk of VaD (mixed); and Melainabacteria was correlated with an increased risk of VaD (multiple infarctions). Sensitivity analyses revealed no multilevel effects or heterogeneity and no inverse causality between VaD and inflammatory cytokines or the gut microbiota. The MVMR results further confirmed that the causal effects of Negativicutes, Selenomonadales, and Melainabacteria on VaD remain significant. Mediation MR analysis showed that inflammatory cytokines were not potential mediators. Conclusion This study helps us to better understand the pathological mechanisms of VaD and suggests the potential value of targeting increases or decreases in inflammatory cytokines and gut microbiome members for VaD prevention and intervention.
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Affiliation(s)
- Yihan Yang
- The Institution of Rehabilitation Industry, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Ting Rao
- The Institution of Rehabilitation Industry, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- Fujian Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine Subsidiary Rehabilitation Hospital, Fuzhou, China
| | - Sheng Wei
- Department of General Practice, The Second Affiliated Hospital of Wannan Medical College, Anhui, China
| | - Jing Cheng
- Fujian Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine Subsidiary Rehabilitation Hospital, Fuzhou, China
| | - Ying Zhan
- The Institution of Rehabilitation Industry, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Teng Lin
- The First Clinical Medical College, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jincheng Chen
- The Institution of Rehabilitation Industry, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- Fujian Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine Subsidiary Rehabilitation Hospital, Fuzhou, China
| | - Xiaoling Zhong
- Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yijing Jiang
- Fujian Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine Subsidiary Rehabilitation Hospital, Fuzhou, China
| | - Shanli Yang
- Fujian Rehabilitation Hospital, Fujian University of Traditional Chinese Medicine Subsidiary Rehabilitation Hospital, Fuzhou, China
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16
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Batitucci G, Abud GF, Ortiz GU, Belisário LF, Travieso SG, de Lima Viliod MC, Venturini ACR, de Freitas EC. Sarcobesity: New paradigms for healthy aging related to taurine supplementation, gut microbiota and exercise. Ageing Res Rev 2024; 101:102460. [PMID: 39173917 DOI: 10.1016/j.arr.2024.102460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 07/16/2024] [Accepted: 08/15/2024] [Indexed: 08/24/2024]
Abstract
Enigmatic sarcopenic obesity is still a challenge for science and adds to the global public health burden. The progressive accumulation of body fat combined with a dysfunctional skeletal muscle structure and composition, oxidative stress, mitochondrial dysfunction, and anabolic resistance, among other aggravating factors, together represent the seriousness and complexity of treating the metabolic disorder of sarcobesity in aging. For this reason, further studies are needed that encourage the support of therapeutic management. It is along these lines that we direct the reader to therapeutic approaches that demonstrate important, but still obscure, outcomes in the physiological conditions of sarcobesity, such as the role of taurine in modulating inflammatory and antioxidant mechanisms in muscle and adipose tissue, as well as the management of gut microbiota, able to systemically re-establish the structure and function of the gut-muscle axis, in addition to the merits of physical exercise as an instrument to improve muscular health and lifestyle quality.
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Affiliation(s)
- Gabriela Batitucci
- School of Medical Sciences, Obesity and Comorbidities Research Center, University of Campinas - UNICAMP, Campinas, Sao Paulo, Brazil
| | - Gabriela Ferreira Abud
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Gabriela Ueta Ortiz
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Lucas Fernandes Belisário
- Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil
| | - Sofia Germano Travieso
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Marcela Coffacci de Lima Viliod
- Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil
| | - Ana Cláudia Rossini Venturini
- Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil
| | - Ellen Cristini de Freitas
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil; Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil.
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17
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Mohr AE, Jasbi P, van Woerden I, Chi J, Gu H, Bruening M, Whisner CM. Microbial Ecology and Metabolism of Emerging Adulthood: Gut Microbiome Insights from a College Freshman Cohort. GUT MICROBES REPORTS 2024; 1:1-23. [PMID: 39221110 PMCID: PMC11361303 DOI: 10.1080/29933935.2024.2387936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 09/04/2024]
Abstract
The human gut microbiome (GM) undergoes dynamic changes throughout life, transitioning from infancy to adulthood. Despite improved understanding over the past years about how genetics, lifestyle, and the external environment impact the GM, limited research has explored the GM's evolution during late-stage adolescence, especially among college students. This study addresses this gap by investigating the longitudinal dynamics of fecal microbial, functional, and metabolomic signatures in a diverse group of first-year, dormitory-housed college students. A total of 485 stool samples from 246 participants were analyzed, identifying four primary GM community types, predominantly led by Bacteroides (66.8% of samples), as well as Blautia and Prevotella. The Prevotella/Bacteroides (P/B) ratio emerged as a robust GM composition indicator, predictively associated with 15 metabolites. Notably, higher P/B ratios correlated negatively with p-cresol sulfate and cholesterol sulfate, implying potential health implications, while positively correlating with kynurenic acid. Distinct GM transition and stability patterns were found from a detailed longitudinal subset of 93 participants over an academic year. Parasutterella and the Ruminococcus gnavus group exhibited positive associations with compositional variability, whereas Faecalibacterium and Eubacterium ventriosum group displayed negative associations, the latter suggesting stabilizing roles in the GM. Most notably, nearly half of the longitudinal cohort experienced GM community shifts, emphasizing long-term GM adaptability. Comparing individuals with stable community types to those undergoing transitions, we observed significant differences in microbial composition and diversity, signifying substantial shifts in the microbiota during transitions. Although diet-related variables contributed to some observed variance, diet did not independently predict the probability of switching between community types within the study's timeframe via multi-state Markov modeling. Furthermore, exploration of stability within dynamic microbiomes among the longitudinal cohort experiencing shifts in community types revealed that microbiome taxa at the genus level exhibited significantly higher total variance than estimated functional and fecal metabolomic features. This suggests tight control of function and metabolism, despite community shifting. Overall, this study highlights the dynamic nature of the late-stage adolescent GM, the role of core taxa, metabolic pathways, the fecal metabolome, and lifestyle and dietary factors, contributing to our understanding of GM assembly and potential health implications during this life phase.
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Affiliation(s)
- Alex E. Mohr
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Center for Health Through Microbiomes, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Paniz Jasbi
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Biodesign Center for Personalized Diagnostics, School of Molecular Sciences, Arizona State University, Tempe, AZ USA
| | - Irene van Woerden
- Community and Public Health, Idaho State University, Pocatello, ID, USA
| | - Jinhua Chi
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
| | - Haiwei Gu
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
| | - Meg Bruening
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Department of Nutritional Sciences, College of Health and Human Development, Pennsylvania State University, University Park, PA, USA
| | - Corrie M. Whisner
- College of Health Solutions, Arizona State University, Phoenix, AZ, USA
- Center for Health Through Microbiomes, Biodesign Institute, Arizona State University, Tempe, AZ, USA
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18
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Pu L, Pang S, Mu W, Chen X, Zou Y, Wang Y, Ding Y, Yan Q, Huang Y, Chen X, Peng T, Luo W, Wang S. The gut mycobiome signatures in long-lived populations. iScience 2024; 27:110412. [PMID: 39081291 PMCID: PMC11284699 DOI: 10.1016/j.isci.2024.110412] [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: 02/22/2024] [Revised: 04/22/2024] [Accepted: 06/26/2024] [Indexed: 08/02/2024] Open
Abstract
Long-lived individuals have been extensively studied as a model to investigate the role of the gut microbiota in aging, but their gut fungi remain almost unexplored. Here, we recruited a community-dwelling cohort of 251 participants (24-108 years, including 47 centenarians) from Guangxi in China to characterize the gut mycobiome signatures. We found gut mycobiome markedly varied during aging and determined aging as a predominant factor driving these variations. For long-lived individuals, core taxa, including Penicillium and Aspergillus, were maintained and Candida enterotype was enriched when compared with old counterparts. Individuals with this enterotype were more likely to possess Bacteroides enterotype enriched in young and centenarians. Moreover, the drivers from Candida enterotype were positively linked with the bacteria components dominated in Bacteroides enterotype. We also identified potentially beneficial yeasts-enriched features to differentiate long-lived individuals from others. Our findings suggest that the gut mycobiome develops with aging, and long-lived individuals possess unique fungal signatures.
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Affiliation(s)
- Lixia Pu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Shifu Pang
- AIage Life Science Corporation Ltd., Guangxi Free Trade Zone Aisheng Biotechnology Corporation Ltd., Nanning, Guangxi, China
| | - Wenjie Mu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Xiaodong Chen
- AIage Life Science Corporation Ltd., Guangxi Free Trade Zone Aisheng Biotechnology Corporation Ltd., Nanning, Guangxi, China
- Guangxi Key Laboratory of Longevity Science and Technology, AIage Life Science Corporation Ltd., Nanning, Guangxi, China
| | - Yang Zou
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yugui Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yingying Ding
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Qi Yan
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yu Huang
- AIage Life Science Corporation Ltd., Guangxi Free Trade Zone Aisheng Biotechnology Corporation Ltd., Nanning, Guangxi, China
| | - Xiaochun Chen
- AIage Life Science Corporation Ltd., Guangxi Free Trade Zone Aisheng Biotechnology Corporation Ltd., Nanning, Guangxi, China
- Guangxi Key Laboratory of Longevity Science and Technology, AIage Life Science Corporation Ltd., Nanning, Guangxi, China
| | - Tao Peng
- Guangxi Key Laboratory of Enhanced Recovery After Surgery for Gastrointestinal Cancer, Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Weifei Luo
- AIage Life Science Corporation Ltd., Guangxi Free Trade Zone Aisheng Biotechnology Corporation Ltd., Nanning, Guangxi, China
- Guangxi Key Laboratory of Longevity Science and Technology, AIage Life Science Corporation Ltd., Nanning, Guangxi, China
| | - Shuai Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
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19
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Miller SJ, Carpenter L, Taylor SL, Wesselingh SL, Choo JM, Shoubridge AP, Papanicolas LE, Rogers GB. Intestinal microbiology and urinary tract infection associated risk in long-term aged care residents. COMMUNICATIONS MEDICINE 2024; 4:164. [PMID: 39152271 PMCID: PMC11329762 DOI: 10.1038/s43856-024-00583-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 07/29/2024] [Indexed: 08/19/2024] Open
Abstract
BACKGROUND Urinary tract infections (UTI) are the most frequently diagnosed infection in residents of long-term care and are a major risk factor for urosepsis, hospitalisation, and death. Translocation of gut pathobionts into the urinary tract is the presumed cause of most UTIs. While specific gut microbiota characteristics have been linked to UTI risk in younger adults, their relevance in aged care residents remains uncertain. METHODS The faecal microbiome was assessed in 54 long-term aged care residents with a history of UTIs and 69 residents without a UTI history. Further comparisons were made to microbiome characteristics in 20 younger adults without UTIs. Microbiome characteristics were examined in relation to prior and subsequent UTIs, as well as antibiotic therapy. RESULTS In long-term aged care residents, prior UTI history and exposure to UTI-exclusive antibiotics do not significantly affect microbiome composition or functional capacity. However, exposure to antibiotics unrelated to UTI treatment is associated with distinct microbiota compositional traits. Adjustment for dementia, incontinence, diabetes, and prior antibiotic use finds no microbiota characteristic linked to UTI development. However, prior UTI is identified as a predictor of future UTIs. Comparison with younger adults identifies greater within-participant dispersion in aged care residents, as well as lower microbiota diversity and altered microbiome functional potential. CONCLUSIONS No association between the gut microbiome and UTI incidence, as has been reported in younger individuals, is evident in long-term aged care residents. Considerable variability in gut microbiome characteristics, relating to high antibiotic exposure and age-related physiological and immunological factors, could mask such a relationship. However, it cannot be discounted that increased UTI risk in the elderly is independent of microbiome-mediated mechanisms.
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Affiliation(s)
- Sophie J Miller
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Lucy Carpenter
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Steven L Taylor
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Steve L Wesselingh
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Jocelyn M Choo
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Andrew P Shoubridge
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Lito E Papanicolas
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
- SA Pathology, SA Health, Adelaide, South Australia, Australia
| | - Geraint B Rogers
- Microbiome and Host Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia.
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20
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Mostafavi Abdolmaleky H, Zhou JR. Gut Microbiota Dysbiosis, Oxidative Stress, Inflammation, and Epigenetic Alterations in Metabolic Diseases. Antioxidants (Basel) 2024; 13:985. [PMID: 39199231 PMCID: PMC11351922 DOI: 10.3390/antiox13080985] [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: 07/08/2024] [Revised: 08/05/2024] [Accepted: 08/11/2024] [Indexed: 09/01/2024] Open
Abstract
Gut dysbiosis, resulting from an imbalance in the gut microbiome, can induce excessive production of reactive oxygen species (ROS), leading to inflammation, DNA damage, activation of the immune system, and epigenetic alterations of critical genes involved in the metabolic pathways. Gut dysbiosis-induced inflammation can also disrupt the gut barrier integrity and increase intestinal permeability, which allows gut-derived toxic products to enter the liver and systemic circulation, further triggering oxidative stress, inflammation, and epigenetic alterations associated with metabolic diseases. However, specific gut-derived metabolites, such as short-chain fatty acids (SCFAs), lactate, and vitamins, can modulate oxidative stress and the immune system through epigenetic mechanisms, thereby improving metabolic function. Gut microbiota and diet-induced metabolic diseases, such as obesity, insulin resistance, dyslipidemia, and hypertension, can transfer to the next generation, involving epigenetic mechanisms. In this review, we will introduce the key epigenetic alterations that, along with gut dysbiosis and ROS, are engaged in developing metabolic diseases. Finally, we will discuss potential therapeutic interventions such as dietary modifications, prebiotics, probiotics, postbiotics, and fecal microbiota transplantation, which may reduce oxidative stress and inflammation associated with metabolic syndrome by altering gut microbiota and epigenetic alterations. In summary, this review highlights the crucial role of gut microbiota dysbiosis, oxidative stress, and inflammation in the pathogenesis of metabolic diseases, with a particular focus on epigenetic alterations (including histone modifications, DNA methylomics, and RNA interference) and potential interventions that may prevent or improve metabolic diseases.
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Affiliation(s)
- Hamid Mostafavi Abdolmaleky
- Nutrition/Metabolism Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Department of Medicine (Biomedical Genetics), Boston University Chobanian & Avedisian School of Medicine, Boston, MA 02118, USA
| | - Jin-Rong Zhou
- Nutrition/Metabolism Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
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21
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Özçam M, Lynch SV. The gut-airway microbiome axis in health and respiratory diseases. Nat Rev Microbiol 2024; 22:492-506. [PMID: 38778224 DOI: 10.1038/s41579-024-01048-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2024] [Indexed: 05/25/2024]
Abstract
Communication between the gut and remote organs, such as the brain or the cardiovascular system, has been well established and recent studies provide evidence for a potential bidirectional gut-airway axis. Observations from animal and human studies indicate that respiratory insults influence the activity of the gut microbiome and that microbial ligands and metabolic products generated by the gut microbiome shape respiratory immunity. Information exchange between these two large mucosal surface areas regulates microorganism-immune interactions, with significant implications for the clinical and treatment outcomes of a range of respiratory conditions, including asthma, chronic obstructive pulmonary disease and lung cancer. In this Review, we summarize the most recent data in this field, offering insights into mechanisms of gut-airway crosstalk across spatial and temporal gradients and their relevance for respiratory health.
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Affiliation(s)
- Mustafa Özçam
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Susan V Lynch
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
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22
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Caetano‐Silva ME, Shrestha A, Duff AF, Kontic D, Brewster PC, Kasperek MC, Lin C, Wainwright DA, Hernandez‐Saavedra D, Woods JA, Bailey MT, Buford TW, Allen JM. Aging amplifies a gut microbiota immunogenic signature linked to heightened inflammation. Aging Cell 2024; 23:e14190. [PMID: 38725282 PMCID: PMC11320341 DOI: 10.1111/acel.14190] [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: 02/23/2024] [Revised: 04/20/2024] [Accepted: 04/22/2024] [Indexed: 08/15/2024] Open
Abstract
Aging is associated with low-grade inflammation that increases the risk of infection and disease, yet the underlying mechanisms remain unclear. Gut microbiota composition shifts with age, harboring microbes with varied immunogenic capacities. We hypothesized the gut microbiota acts as an active driver of low-grade inflammation during aging. Microbiome patterns in aged mice strongly associated with signs of bacterial-induced barrier disruption and immune infiltration, including marked increased levels of circulating lipopolysaccharide (LPS)-binding protein (LBP) and colonic calprotectin. Ex vivo immunogenicity assays revealed that both colonic contents and mucosa of aged mice harbored increased capacity to activate toll-like receptor 4 (TLR4) whereas TLR5 signaling was unchanged. We found patterns of elevated innate inflammatory signaling (colonic Il6, Tnf, and Tlr4) and endotoxemia (circulating LBP) in young germ-free mice after 4 weeks of colonization with intestinal contents from aged mice compared with young counterparts, thus providing a direct link between aging-induced shifts in microbiota immunogenicity and host inflammation. Additionally, we discovered that the gut microbiota of aged mice exhibited unique responses to a broad-spectrum antibiotic challenge (Abx), with sustained elevation in Escherichia (Proteobacteria) and altered TLR5 immunogenicity 7 days post-Abx cessation. Together, these data indicate that old age results in a gut microbiota that differentially acts on TLR signaling pathways of the innate immune system. We found that these age-associated microbiota immunogenic signatures are less resilient to challenge and strongly linked to host inflammatory status. Gut microbiota immunogenic signatures should be thus considered as critical factors in mediating chronic inflammatory diseases disproportionally impacting older populations.
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Affiliation(s)
- Maria Elisa Caetano‐Silva
- Department of Health and KinesiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
- Division of Nutritional SciencesUniversity of Illinois at Urbana ChampaignUrbanaIllinoisUSA
| | - Akriti Shrestha
- Division of Nutritional SciencesUniversity of Illinois at Urbana ChampaignUrbanaIllinoisUSA
| | - Audrey F. Duff
- Center for Microbial PathogenesisNationwide Children's HospitalColumbusOhioUSA
| | - Danica Kontic
- Center for Microbial PathogenesisNationwide Children's HospitalColumbusOhioUSA
| | - Patricia C. Brewster
- Department of Health and KinesiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
| | - Mikaela C. Kasperek
- Division of Nutritional SciencesUniversity of Illinois at Urbana ChampaignUrbanaIllinoisUSA
| | - Chia‐Hao Lin
- Department of Health and KinesiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
| | - Derek A. Wainwright
- Departments of Cancer Biology and Neurological SurgeryLoyola University Chicago, Stritch School of MedicineMaywoodIllinoisUSA
| | - Diego Hernandez‐Saavedra
- Department of Health and KinesiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
- Division of Nutritional SciencesUniversity of Illinois at Urbana ChampaignUrbanaIllinoisUSA
| | - Jeffrey A. Woods
- Department of Health and KinesiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
- Division of Nutritional SciencesUniversity of Illinois at Urbana ChampaignUrbanaIllinoisUSA
| | - Michael T. Bailey
- Center for Microbial PathogenesisNationwide Children's HospitalColumbusOhioUSA
| | - Thomas W. Buford
- Division of Gerontology, Geriatrics and Palliative Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
- Birmingham/Atlanta VA GRECCBirmingham VA Medical CenterBirminghamAlabamaUSA
| | - Jacob M. Allen
- Department of Health and KinesiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
- Division of Nutritional SciencesUniversity of Illinois at Urbana ChampaignUrbanaIllinoisUSA
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23
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Lin X, Jiao R, Cui H, Yan X, Zhang K. Physiochemically and Genetically Engineered Bacteria: Instructive Design Principles and Diverse Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2403156. [PMID: 38864372 PMCID: PMC11321697 DOI: 10.1002/advs.202403156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/18/2024] [Indexed: 06/13/2024]
Abstract
With the comprehensive understanding of microorganisms and the rapid advances of physiochemical engineering and bioengineering technologies, scientists are advancing rationally-engineered bacteria as emerging drugs for treating various diseases in clinical disease management. Engineered bacteria specifically refer to advanced physiochemical or genetic technologies in combination with cutting edge nanotechnology or physical technologies, which have been validated to play significant roles in lysing tumors, regulating immunity, influencing the metabolic pathways, etc. However, there has no specific reviews that concurrently cover physiochemically- and genetically-engineered bacteria and their derivatives yet, let alone their distinctive design principles and various functions and applications. Herein, the applications of physiochemically and genetically-engineered bacteria, and classify and discuss significant breakthroughs with an emphasis on their specific design principles and engineering methods objective to different specific uses and diseases beyond cancer is described. The combined strategies for developing in vivo biotherapeutic agents based on these physiochemically- and genetically-engineered bacteria or bacterial derivatives, and elucidated how they repress cancer and other diseases is also underlined. Additionally, the challenges faced by clinical translation and the future development directions are discussed. This review is expected to provide an overall impression on physiochemically- and genetically-engineered bacteria and enlighten more researchers.
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Affiliation(s)
- Xia Lin
- Central Laboratory and Department of UltrasoundSichuan Academy of Medical SciencesSichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaNo. 32, West Second Section, First Ring RoadChengduSichuan610072China
| | - Rong Jiao
- Central Laboratory and Department of UltrasoundSichuan Academy of Medical SciencesSichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaNo. 32, West Second Section, First Ring RoadChengduSichuan610072China
| | - Haowen Cui
- Central Laboratory and Department of UltrasoundSichuan Academy of Medical SciencesSichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaNo. 32, West Second Section, First Ring RoadChengduSichuan610072China
| | - Xuebing Yan
- Department of OncologyAffiliated Hospital of Yangzhou University. No.368Hanjiang Road, Hanjiang DistrictYangzhouJiangsu Province225012China
| | - Kun Zhang
- Central Laboratory and Department of UltrasoundSichuan Academy of Medical SciencesSichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaNo. 32, West Second Section, First Ring RoadChengduSichuan610072China
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24
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Kawamoto S, Hara E. Crosstalk between gut microbiota and cellular senescence: a vicious cycle leading to aging gut. Trends Cell Biol 2024; 34:626-635. [PMID: 38220548 DOI: 10.1016/j.tcb.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/06/2023] [Accepted: 12/15/2023] [Indexed: 01/16/2024]
Abstract
Two phenomena, the accumulation of senescent cells and changes in the gut microbiota, are thought to contribute to the decline of biological functions and the development of diseases associated with aging. However, the relationship between these two phenomena and their effects on aging remains to be clarified. Recently, we have reported that gut bacteria induce cellular senescence in ileal germinal center (GC) B cells, resulting in decreased IgA production and diversity. This, in turn, leads to an imbalance in the gut microbiota. Thus, the crosstalk between the gut microbiota and cellular senescence via the host immune system may establish a vicious cycle and contribute to the disruption of gut homeostasis associated with aging.
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Affiliation(s)
- Shimpei Kawamoto
- Department of Molecular Microbiology, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita 565-0871, Japan.
| | - Eiji Hara
- Department of Molecular Microbiology, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita 565-0871, Japan; Immunology Frontier Research Center, Osaka University, Suita 565-0871, Japan; Center for Infectious Diseases Education and Research, Osaka University, Suita 565-0871, Japan
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25
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Worsley SF, Davies CS, Lee CZ, Mannarelli ME, Burke T, Komdeur J, Dugdale HL, Richardson DS. Longitudinal gut microbiome dynamics in relation to age and senescence in a wild animal population. Mol Ecol 2024; 33:e17477. [PMID: 39010794 DOI: 10.1111/mec.17477] [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: 01/11/2024] [Revised: 04/25/2024] [Accepted: 05/15/2024] [Indexed: 07/17/2024]
Abstract
In humans, gut microbiome (GM) differences are often correlated with, and sometimes causally implicated in, ageing. However, it is unclear how these findings translate in wild animal populations. Studies that investigate how GM dynamics change within individuals, and with declines in physiological condition, are needed to fully understand links between chronological age, senescence and the GM, but have rarely been done. Here, we use longitudinal data collected from a closed population of Seychelles warblers (Acrocephalus sechellensis) to investigate how bacterial GM alpha diversity, composition and stability are associated with host senescence. We hypothesised that GM diversity and composition will differ, and become more variable, in older adults, particularly in the terminal year prior to death, as the GM becomes increasingly dysregulated due to senescence. However, GM alpha diversity and composition remained largely invariable with respect to adult age and did not differ in an individual's terminal year. Furthermore, there was no evidence that the GM became more heterogenous in senescent age groups (individuals older than 6 years), or in the terminal year. Instead, environmental variables such as season, territory quality and time of day, were the strongest predictors of GM variation in adult Seychelles warblers. These results contrast with studies on humans, captive animal populations and some (but not all) studies on non-human primates, suggesting that GM deterioration may not be a universal hallmark of senescence in wild animal species. Further work is needed to disentangle the factors driving variation in GM-senescence relationships across different host taxa.
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Affiliation(s)
- Sarah F Worsley
- School of Biological Sciences, University of East Anglia, Norfolk, UK
| | - Charli S Davies
- School of Biological Sciences, University of East Anglia, Norfolk, UK
| | - Chuen Zhang Lee
- School of Biological Sciences, University of East Anglia, Norfolk, UK
| | | | - Terry Burke
- NERC Biomolecular Analysis Facility, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK
| | - Jan Komdeur
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
| | - Hannah L Dugdale
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
- Faculty of Biological Sciences, School of Biology, University of Leeds, Leeds, UK
| | - David S Richardson
- School of Biological Sciences, University of East Anglia, Norfolk, UK
- Nature Seychelles, Mahé, Republic of Seychelles
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26
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Fettig NM, Pu A, Osborne LC, Gommerman JL. The influence of aging and the microbiome in multiple sclerosis and other neurologic diseases. Immunol Rev 2024; 325:166-189. [PMID: 38890777 DOI: 10.1111/imr.13361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
The human gut microbiome is well-recognized as a key player in maintaining health. However, it is a dynamic entity that changes across the lifespan. How the microbial changes that occur in later decades of life shape host health or impact age-associated inflammatory neurological diseases such as multiple sclerosis (MS) is still unclear. Current understanding of the aging gut microbiome is largely limited to cross-sectional observational studies. Moreover, studies in humans are limited by confounding host-intrinsic and extrinsic factors that are not easily disentangled from aging. This review provides a comprehensive summary of existing literature on the aging gut microbiome and its known relationships with neurological diseases, with a specific focus on MS. We will also discuss preclinical animal models and human studies that shed light on the complex microbiota-host interactions that have the potential to influence disease pathology and progression in aging individuals. Lastly, we propose potential avenues of investigation to deconvolute features of an aging microbiota that contribute to disease, or alternatively promote health in advanced age.
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Affiliation(s)
- Naomi M Fettig
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Annie Pu
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Lisa C Osborne
- Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
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27
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Gestal MC, Oates AE, Akob DM, Criss AK. Perspectives on the future of host-microbe biology from the Council on Microbial Sciences of the American Society for Microbiology. mSphere 2024; 9:e0025624. [PMID: 38920371 PMCID: PMC11288050 DOI: 10.1128/msphere.00256-24] [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] [Indexed: 06/27/2024] Open
Abstract
Host-microbe biology (HMB) stands on the cusp of redefinition, challenging conventional paradigms to instead embrace a more holistic understanding of the microbial sciences. The American Society for Microbiology (ASM) Council on Microbial Sciences hosted a virtual retreat in 2023 to identify the future of the HMB field and innovations needed to advance the microbial sciences. The retreat presentations and discussions collectively emphasized the interconnectedness of microbes and their profound influence on humans, animals, and environmental health, as well as the need to broaden perspectives to fully embrace the complexity of these interactions. To advance HMB research, microbial scientists would benefit from enhancing interdisciplinary and transdisciplinary research to utilize expertise in diverse fields, integrate different disciplines, and promote equity and accessibility within HMB. Data integration will be pivotal in shaping the future of HMB research by bringing together varied scientific perspectives, new and innovative techniques, and 'omics approaches. ASM can empower under-resourced groups with the goal of ensuring that the benefits of cutting-edge research reach every corner of the scientific community. Thus, ASM will be poised to steer HMB toward a future that champions inclusivity, innovation, and accessible scientific progress.
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Affiliation(s)
- Monica C. Gestal
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana, USA
| | | | - Denise M. Akob
- U.S. Geological Survey, Geology, Energy and Minerals Science Center, Reston, Virginia, USA
| | - Alison K. Criss
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia, USA
| | - Host-Microbe Retreat Planning CommitteeFidel, Jr.Paul L.1WatnickPaula I.2YoungVincent B.3ZackularJoseph4Department of Oral and Craniofacial Biology, Louisiana State University Health, New Orleans, Louisiana, USADivision of Infectious Diseases, Boston Children's Hospital, Boston, Massachusetts, USADepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USAInstitute for Immunology and Immune Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana, USA
- American Society for Microbiology, Washington, DC, USA
- U.S. Geological Survey, Geology, Energy and Minerals Science Center, Reston, Virginia, USA
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia, USA
| | - Host-Microbe Retreat SpeakersCasadevallArturo1GibbonsSean M.2HuffnagleGary B.3McFall-NgaiMargaret4NewmanDianne K.5NickersonCheryl A.6Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USAInstitute for Systems Biology, Seattle, Washington, USADepartment of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USAPacific Biosciences Research Center, University of Hawai'i at Mānoa, Honolulu, Hawaii, USADivision of Biology and Biological Engineering, Caltech, Pasadena, California, USASchool of Life Sciences, Biodesign Center for Fundamental and Applied Microbiomics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana, USA
- American Society for Microbiology, Washington, DC, USA
- U.S. Geological Survey, Geology, Energy and Minerals Science Center, Reston, Virginia, USA
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, Virginia, USA
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Wadop YN, Vasquez EL, Mathews JJ, Muhammad JAS, Mavarez RP, Satizabal C, Gonzales MM, Tanner J, Maestre G, Fonteh AN, Seshadri S, Kautz TF, Fongang B. Differential Patterns of Gut and Oral Microbiomes in Hispanic Individuals with Cognitive Impairment. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.27.605455. [PMID: 39211240 PMCID: PMC11361189 DOI: 10.1101/2024.07.27.605455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Alzheimer's disease and related dementias (ADRD) have been associated with alterations in both oral and gut microbiomes. While extensive research has focused on the role of gut dysbiosis in ADRD, the contribution of the oral microbiome remains relatively understudied. Furthermore, the potential synergistic interactions between oral and gut microbiomes in ADRD pathology are largely unexplored. This study aims to evaluate distinct patterns and potential synergistic effects of oral and gut microbiomes in a cohort of predominantly Hispanic individuals with cognitive impairment (CI) and without cognitive impairment (NC). We conducted 16S rRNA gene sequencing on stool and saliva samples from 32 participants (17 CI, 15 NC; 62.5% female, mean age = 70.4 ± 6.2 years) recruited in San Antonio, Texas, USA. Correlation analysis through MaAslin2 assessed the relationship between participants' clinical measurements (e.g., fasting glucose and blood cholesterol) and their gut and saliva microbial contents. Differential abundance analysis evaluated taxa with significant differences between CI and NC groups, and alpha and beta diversity metrics assessed within-sample and group compositional differences. Our analyses revealed no significant differences between NC and CI groups in fasting glucose or blood cholesterol levels. However, a clear association was observed between gut microbiome composition and levels of fasting glucose and blood cholesterol. While alpha and beta diversity metrics showed no significant differences between CI and NC groups, differential abundance analysis revealed an increased presence of oral genera such as Dialister , Fretibacterium , and Mycoplasma in CI participants. Conversely, CI individuals exhibited a decreased abundance of gut genera, including Shuttleworthia , Holdemania , and Subdoligranulum , which are known for their anti-inflammatory properties. No evidence was found for synergistic contributions between oral and gut microbiomes in the context of ADRD. Our findings suggest that similar to the gut microbiome, the oral microbiome undergoes significant modifications as individuals transition from NC to CI. Notably, the identified oral microbes have been previously associated with periodontal diseases and gingivitis. These results underscore the necessity for further investigations with larger sample sizes to validate our findings and elucidate the complex interplay between oral and gut microbiomes in ADRD pathogenesis.
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29
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Zhang W, Zhong Y, Wang Z, Tang F, Zheng C. Apple polysaccharide improves age-matched cognitive impairment and intestinal aging through microbiota-gut-brain axis. Sci Rep 2024; 14:16215. [PMID: 39003416 PMCID: PMC11246462 DOI: 10.1038/s41598-024-67132-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024] Open
Abstract
The Apple polysaccharides (AP), extracted from the fruit of apple, has been used to treat multiple pathological diseases. In this study, we evaluated the effects of AP on cognitive impairment and intestinal aging in naturally aging mice. As a result, it was found that AP could improve spatial learning and memory impairment in aging mice through the Morris water maze experiment. Additionally, AP intervention can upregulate the expression of nerve growth factor (BDNF), postsynaptic marker (PSD95), and presynaptic marker (SYP) proteins. Moreover, AP can enhance total antioxidant capacity, reduce the level of pro-inflammatory cytokine, and inhibit the activation of the NF-κB signaling pathway, exerting anti-inflammatory and antioxidant functions. And the administration of AP restored intestinal mucosal barrier function, reduced the expression of aging and apoptosis related proteins. The administration of AP also altered the gut microbiota of mice. At the genus level, AP decreased the abundance of Helicobacter and Bilophila, while increased the abundance of Lactobacillus and Bacteroides. In summary, these data demonstrate that AP treatment can alleviate cognitive impairment, oxidative stress, and inflammatory reactions, repair the intestinal mucosal barrier, reduce intestinal aging, and alter specific microbial characteristics, ultimately improving the health of the elderly.
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Affiliation(s)
- Wenming Zhang
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Nanchang University, 330000, Nanchang, Jiangxi, People's Republic of China
- The Institute of Translational Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang University, 1 Minde Road, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Yuchun Zhong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Nanchang University, 330000, Nanchang, Jiangxi, People's Republic of China
- The Institute of Translational Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang University, 1 Minde Road, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Zhuoya Wang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
- The Institute of Translational Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang University, 1 Minde Road, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Furui Tang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
- The Institute of Translational Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang University, 1 Minde Road, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Cihua Zheng
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Nanchang University, 330000, Nanchang, Jiangxi, People's Republic of China.
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China.
- The Institute of Translational Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang University, 1 Minde Road, Nanchang, 330006, Jiangxi, People's Republic of China.
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30
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Min M, Egli C, Sivamani RK. The Gut and Skin Microbiome and Its Association with Aging Clocks. Int J Mol Sci 2024; 25:7471. [PMID: 39000578 PMCID: PMC11242811 DOI: 10.3390/ijms25137471] [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: 05/15/2024] [Revised: 06/30/2024] [Accepted: 07/07/2024] [Indexed: 07/16/2024] Open
Abstract
Aging clocks are predictive models of biological age derived from age-related changes, such as epigenetic changes, blood biomarkers, and, more recently, the microbiome. Gut and skin microbiota regulate more than barrier and immune function. Recent studies have shown that human microbiomes may predict aging. In this narrative review, we aim to discuss how the gut and skin microbiomes influence aging clocks as well as clarify the distinction between chronological and biological age. A literature search was performed on PubMed/MEDLINE databases with the following keywords: "skin microbiome" OR "gut microbiome" AND "aging clock" OR "epigenetic". Gut and skin microbiomes may be utilized to create aging clocks based on taxonomy, biodiversity, and functionality. The top contributing microbiota or metabolic pathways in these aging clocks may influence aging clock predictions and biological age. Furthermore, gut and skin microbiota may directly and indirectly influence aging clocks through the regulation of clock genes and the production of metabolites that serve as substrates or enzymatic regulators. Microbiome-based aging clock models may have therapeutic potential. However, more research is needed to advance our understanding of the role of microbiota in aging clocks.
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Affiliation(s)
- Mildred Min
- Integrative Skin Science and Research, 1451 River Park Drive, Suite 222, Sacramento, CA 95819, USA
- College of Medicine, California Northstate University, 9700 W Taron Dr, Elk Grove, CA 95757, USA
| | - Caitlin Egli
- Integrative Skin Science and Research, 1451 River Park Drive, Suite 222, Sacramento, CA 95819, USA
- College of Medicine, University of St. George's, University Centre, West Indies, Grenada
| | - Raja K Sivamani
- Integrative Skin Science and Research, 1451 River Park Drive, Suite 222, Sacramento, CA 95819, USA
- College of Medicine, California Northstate University, 9700 W Taron Dr, Elk Grove, CA 95757, USA
- Integrative Research Institute, 4825 River Park Drive, Suite 100, Sacramento, CA 95819, USA
- Pacific Skin Institute, 1495 River Park Drive, Sacramento, CA 95815, USA
- Department of Dermatology, University of California-Davis, 3301 C St #1400, Sacramento, CA 95816, USA
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31
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Zhu W, Wang B, Jiang J. Evolution, Diversity, and Conservation of Herpetofauna. Animals (Basel) 2024; 14:2004. [PMID: 38998116 PMCID: PMC11240542 DOI: 10.3390/ani14132004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/14/2024] Open
Abstract
Amphibians and reptiles play a critical role in the evolution of Tetrapoda, showcasing significant diversity in terms of their genetics, species, morphology, life history traits, and evolutionary functions [...].
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Affiliation(s)
- Wei Zhu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Bin Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jianping Jiang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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32
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Berryhill BA, Burke KB, Fontaine J, Brink CE, Harvill MG, Goldberg DA, Konstantinidis KT, Levin BR, Woodworth MH. Enteric Populations of Escherichia coli are Likely to be Resistant to Phages Due to O Antigen Expression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.11.08.566299. [PMID: 37986824 PMCID: PMC10659284 DOI: 10.1101/2023.11.08.566299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
There is a surfeit of bioinformatic data showing that bacteriophages abound in the enteric microbiomes of humans. What is the contribution of these viruses in shaping the bacterial strain and species composition of the gut microbiome and how are these phages maintained over time? To address these questions, we performed experiments with Escherichia coli and phages isolated from four fecal microbiota transplantation (FMT) doses as representative samples of non-dysbiotic enteric microbiota and develop and analyze the properties of a mathematical model of the population and evolutionary dynamics of bacteria and phage. Our models predict and experiments confirm that due to production of the O antigen, E. coli in the enteric microbiome are likely to be resistant to infection with co-occurring phages. Furthermore, our modeling suggests that the phages can be maintained in the population due to the high rates of host transition between resistant and sensitive states, which we call leaky resistance. Based on our observations and model predictions, we postulate that the phages found in the human gut are likely to play little role in shaping the composition of E. coli at the strain level in the enteric microbiome in healthy individuals. How general this is for other species of bacteria in the enteric flora is not yet clear, although O antigen expression is common across many taxa.
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Affiliation(s)
- Brandon A. Berryhill
- Department of Biology, Emory University; Atlanta, Georgia, 30322, USA
- Program in Microbiology and Molecular Genetics (MMG), Graduate Division of Biological and Biomedical Sciences (GDBBS), Laney Graduate School, Emory University; Atlanta, Georgia, 30322, USA
| | - Kylie B. Burke
- Department of Biology, Emory University; Atlanta, Georgia, 30322, USA
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Jake Fontaine
- Department of Biology, Emory University; Atlanta, Georgia, 30322, USA
| | - Catherine E. Brink
- Ocean Science & Engineering, School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA
- School of Civil & Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Mason G. Harvill
- Department of Biology, Emory University; Atlanta, Georgia, 30322, USA
| | - David A. Goldberg
- Department of Biology, Emory University; Atlanta, Georgia, 30322, USA
| | - Konstantinos T. Konstantinidis
- Ocean Science & Engineering, School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA
- School of Civil & Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Bruce R. Levin
- Department of Biology, Emory University; Atlanta, Georgia, 30322, USA
| | - Michael H. Woodworth
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
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33
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Zimmermann-Rösner A, Prehn-Kristensen A. The Microbiome in Child and Adolescent Psychiatry. ZEITSCHRIFT FUR KINDER- UND JUGENDPSYCHIATRIE UND PSYCHOTHERAPIE 2024; 52:213-226. [PMID: 38240707 DOI: 10.1024/1422-4917/a000965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Recent research has increasingly emphasized the function of the microbiome in human health. The gut microbiome is essential for digesting food and seems to play a vital role in mental health as well. This review briefly overviews the gut microbiome and its interplay with the central nervous system. We then summarize some of the latest findings on the possible role of the microbiome in psychiatric disorders in children and adolescents. In particular, we focus on autism spectrum disorder, attention-deficit/hyperactivity disorder, anorexia nervosa, bipolar disorder, and major depressive disorder. Although the role of microbiota in mental development and health still needs to be researched intensively, it has become increasingly apparent that the impact of microbiota must be considered to better understand psychiatric disorders.
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Affiliation(s)
| | - Alexander Prehn-Kristensen
- Institute for Child and Adolescent Psychiatry, Center of Integrative Psychiatry GmbH, Kiel, Germany
- Department of Psychology, Faculty of Human Sciences, MSH Medical School Hamburg - University of Applied Sciences and Medical University, Hamburg, Germany
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34
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Lee YT, Senturk M, Guan Y, Wang MC. Bacteria-organelle communication in physiology and disease. J Cell Biol 2024; 223:e202310134. [PMID: 38748249 PMCID: PMC11096858 DOI: 10.1083/jcb.202310134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 04/03/2024] [Accepted: 05/03/2024] [Indexed: 05/18/2024] Open
Abstract
Bacteria, omnipresent in our environment and coexisting within our body, exert dual beneficial and pathogenic influences. These microorganisms engage in intricate interactions with the human body, impacting both human health and disease. Simultaneously, certain organelles within our cells share an evolutionary relationship with bacteria, particularly mitochondria, best known for their energy production role and their dynamic interaction with each other and other organelles. In recent years, communication between bacteria and mitochondria has emerged as a new mechanism for regulating the host's physiology and pathology. In this review, we delve into the dynamic communications between bacteria and host mitochondria, shedding light on their collaborative regulation of host immune response, metabolism, aging, and longevity. Additionally, we discuss bacterial interactions with other organelles, including chloroplasts, lysosomes, and the endoplasmic reticulum (ER).
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Affiliation(s)
- Yi-Tang Lee
- Waisman Center, University of Wisconsin, Madison, WI, USA
- Huffington Center on Aging, Baylor College of Medicine, Houston, TX, USA
- Integrative Program of Molecular and Biochemical Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Mumine Senturk
- Huffington Center on Aging, Baylor College of Medicine, Houston, TX, USA
- Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, USA
| | - Youchen Guan
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - Meng C. Wang
- Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, USA
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
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35
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Kane AE, Chellappa K, Schultz MB, Arnold M, Li J, Amorim J, Diener C, Zhu D, Mitchell SJ, Griffin P, Tian X, Petty C, Conway R, Walsh K, Shelerud L, Duesing C, Mueller A, Li K, McNamara M, Shima RT, Mitchell J, Bonkowski MS, de Cabo R, Gibbons SM, Wu LE, Ikeno Y, Baur JA, Rajman L, Sinclair DA. Long-term NMN treatment increases lifespan and healthspan in mice in a sex dependent manner. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.21.599604. [PMID: 38979132 PMCID: PMC11230277 DOI: 10.1101/2024.06.21.599604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Nicotinamide adenine dinucleotide (NAD) is essential for many enzymatic reactions, including those involved in energy metabolism, DNA repair and the activity of sirtuins, a family of defensive deacylases. During aging, levels of NAD + can decrease by up to 50% in some tissues, the repletion of which provides a range of health benefits in both mice and humans. Whether or not the NAD + precursor nicotinamide mononucleotide (NMN) extends lifespan in mammals is not known. Here we investigate the effect of long-term administration of NMN on the health, cancer burden, frailty and lifespan of male and female mice. Without increasing tumor counts or severity in any tissue, NMN treatment of males and females increased activity, maintained more youthful gene expression patterns, and reduced overall frailty. Reduced frailty with NMN treatment was associated with increases in levels of Anerotruncus colihominis, a gut bacterium associated with lower inflammation in mice and increased longevity in humans. NMN slowed the accumulation of adipose tissue later in life and improved metabolic health in male but not female mice, while in females but not males, NMN increased median lifespan by 8.5%, possible due to sex-specific effects of NMN on NAD + metabolism. Together, these data show that chronic NMN treatment delays frailty, alters the microbiome, improves male metabolic health, and increases female mouse lifespan, without increasing cancer burden. These results highlight the potential of NAD + boosters for treating age-related conditions and the importance of using both sexes for interventional lifespan studies.
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36
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Wu J, Shen H, Lv Y, He J, Xie X, Xu Z, Yang P, Qian W, Bai T, Hou X. Age over sex: evaluating gut microbiota differences in healthy Chinese populations. Front Microbiol 2024; 15:1412991. [PMID: 38974029 PMCID: PMC11224521 DOI: 10.3389/fmicb.2024.1412991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Accepted: 06/04/2024] [Indexed: 07/09/2024] Open
Abstract
Age and gender have been recognized as two pivotal covariates affecting the composition of the gut microbiota. However, their mediated variations in microbiota seem to be inconsistent across different countries and races. In this study, 613 individuals, whom we referred to as the "healthy" population, were selected from 1,018 volunteers through rigorous selection using 16S rRNA sequencing. Three enterotypes were identified, namely, Escherichia-Shigella, mixture (Bacteroides and Faecalibacterium), and Prevotella. Moreover, 11 covariates that explain the differences in microbiota were determined, with age being the predominant factor. Furthermore, age-related differences in alpha diversity, beta diversity, and core genera were observed in our cohort. Remarkably, after adjusting for 10 covariates other than age, abundant genera that differed between age groups were demonstrated. In contrast, minimal differences in alpha diversity, beta diversity, and differentially abundant genera were observed between male and female individuals. Furthermore, we also demonstrated the age trajectories of several well-known beneficial genera, lipopolysaccharide (LPS)-producing genera, and short-chain fatty acids (SCFAs)-producing genera. Overall, our study further elucidated the effects mediated by age and gender on microbiota differences, which are of significant importance for a comprehensive understanding of the gut microbiome spectrum in healthy individuals.
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Affiliation(s)
- Jiacheng Wu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hexiao Shen
- School of Life Science, Hubei University, Wuhan, Hubei, China
| | - Yongling Lv
- School of Life Science, Hubei University, Wuhan, Hubei, China
| | - Jing He
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaotian Xie
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhiyue Xu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Pengcheng Yang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wei Qian
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tao Bai
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Basak S, Mallick R, Navya Sree B, Duttaroy AK. Placental Epigenome Impacts Fetal Development: Effects of Maternal Nutrients and Gut Microbiota. Nutrients 2024; 16:1860. [PMID: 38931215 PMCID: PMC11206482 DOI: 10.3390/nu16121860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Evidence is emerging on the role of maternal diet, gut microbiota, and other lifestyle factors in establishing lifelong health and disease, which are determined by transgenerationally inherited epigenetic modifications. Understanding epigenetic mechanisms may help identify novel biomarkers for gestation-related exposure, burden, or disease risk. Such biomarkers are essential for developing tools for the early detection of risk factors and exposure levels. It is necessary to establish an exposure threshold due to nutrient deficiencies or other environmental factors that can result in clinically relevant epigenetic alterations that modulate disease risks in the fetus. This narrative review summarizes the latest updates on the roles of maternal nutrients (n-3 fatty acids, polyphenols, vitamins) and gut microbiota on the placental epigenome and its impacts on fetal brain development. This review unravels the potential roles of the functional epigenome for targeted intervention to ensure optimal fetal brain development and its performance in later life.
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Affiliation(s)
- Sanjay Basak
- Molecular Biology Division, ICMR-National Institute of Nutrition, Indian Council of Medical Research, Hyderabad 500007, India; (S.B.); (B.N.S.)
| | - Rahul Mallick
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
| | - Boga Navya Sree
- Molecular Biology Division, ICMR-National Institute of Nutrition, Indian Council of Medical Research, Hyderabad 500007, India; (S.B.); (B.N.S.)
| | - Asim K. Duttaroy
- Department of Nutrition, Institute of Medical Sciences, Faculty of Medicine, University of Oslo, 0317 Oslo, Norway
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38
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Gut microbial age modulates cardiovascular disease risk in metabolically unhealthy older people. Nat Med 2024; 30:1541-1542. [PMID: 38862716 DOI: 10.1038/s41591-024-03058-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
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Pujolassos M, Susín A, Calle M. Microbiome compositional data analysis for survival studies. NAR Genom Bioinform 2024; 6:lqae038. [PMID: 38666212 PMCID: PMC11044448 DOI: 10.1093/nargab/lqae038] [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: 11/08/2023] [Revised: 01/23/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
The growing interest in studying the relationship between the human microbiome and our health has also extended to time-to-event studies where researchers explore the connection between the microbiome and the occurrence of a specific event of interest. The analysis of microbiome obtained through high throughput sequencing techniques requires the use of specialized Compositional Data Analysis (CoDA) methods designed to accommodate its compositional nature. There is a limited availability of statistical tools for microbiome analysis that incorporate CoDA, and this is even more pronounced in the context of survival analysis. To fill this methodological gap, we present coda4microbiome for survival studies, a new methodology for the identification of microbial signatures in time-to-event studies. The algorithm implements an elastic-net penalized Cox regression model adapted to compositional covariates. We illustrate coda4microbiome algorithm for survival studies with a case study about the time to develop type 1 diabetes for non-obese diabetic mice. Our algorithm identified a bacterial signature composed of 21 genera associated with diabetes development. coda4microbiome for survival studies is integrated in the R package coda4microbiome as an extension of the existing functions for cross-sectional and longitudinal studies.
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Affiliation(s)
- Meritxell Pujolassos
- Bioscience Department, Faculty of Sciences, Technology and Engineering, University of Vic – Central University of Catalunya, Vic 08500, Spain
| | - Antoni Susín
- Mathematical Department, UPC-Barcelona Tech, Barcelona 08034, Spain
| | - M.Luz Calle
- Bioscience Department, Faculty of Sciences, Technology and Engineering, University of Vic – Central University of Catalunya, Vic 08500, Spain
- Institut de Recerca i Innovació en Ciències de la Vida i de la Salut a la Catalunya Central (IRIS-CC), Vic 08500, Spain
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Tamayo M, Olivares M, Ruas-Madiedo P, Margolles A, Espín JC, Medina I, Moreno-Arribas MV, Canals S, Mirasso CR, Ortín S, Beltrán-Sanchez H, Palloni A, Tomás-Barberán FA, Sanz Y. How Diet and Lifestyle Can Fine-Tune Gut Microbiomes for Healthy Aging. Annu Rev Food Sci Technol 2024; 15:283-305. [PMID: 38941492 DOI: 10.1146/annurev-food-072023-034458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2024]
Abstract
Many physical, social, and psychological changes occur during aging that raise the risk of developing chronic diseases, frailty, and dependency. These changes adversely affect the gut microbiota, a phenomenon known as microbe-aging. Those microbiota alterations are, in turn, associated with the development of age-related diseases. The gut microbiota is highly responsive to lifestyle and dietary changes, displaying a flexibility that also provides anactionable tool by which healthy aging can be promoted. This review covers, firstly, the main lifestyle and socioeconomic factors that modify the gut microbiota composition and function during healthy or unhealthy aging and, secondly, the advances being made in defining and promoting healthy aging, including microbiome-informed artificial intelligence tools, personalized dietary patterns, and food probiotic systems.
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Affiliation(s)
- M Tamayo
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain;
- Faculty of Medicine, Autonomous University of Madrid (UAM), Spain
| | - M Olivares
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain;
| | | | - A Margolles
- Health Research Institute (ISPA), Asturias, Spain
| | - J C Espín
- Laboratory of Food & Health, Group of Quality, Safety, and Bioactivity of Plant Foods, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Murcia, Spain
| | - I Medina
- Instituto de Investigaciones Marinas, Spanish National Research Council (IIM-CSIC), Vigo, Spain
| | | | - S Canals
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Sant Joan d'Alacant, Spain
| | - C R Mirasso
- Instituto de Física Interdisciplinar y Sistemas Complejos IFISC (UIB-CSIC), Campus Universitat de les Illes Balears, Palma de Mallorca, Spain
| | - S Ortín
- Instituto de Física Interdisciplinar y Sistemas Complejos IFISC (UIB-CSIC), Campus Universitat de les Illes Balears, Palma de Mallorca, Spain
| | - H Beltrán-Sanchez
- Department of Community Health Sciences, Fielding School of Public Health and California Center for Population Research, University of California, Los Angeles, California, USA
| | - A Palloni
- Department of Sociology, University of Wisconsin, Madison, Wisconsin, USA
| | - F A Tomás-Barberán
- Laboratory of Food & Health, Group of Quality, Safety, and Bioactivity of Plant Foods, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Murcia, Spain
| | - Y Sanz
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain;
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Guimond AJ, Ke S, Tworoger SS, Huang T, Chan AT, Kubzansky LD, Liu YY. Fulfilled Mind, Healthy Gut? Relationships of Eudaimonic Psychological Well-Being With the Gut Microbiome in Postmenopausal Women. Psychosom Med 2024; 86:398-409. [PMID: 38345311 PMCID: PMC11142870 DOI: 10.1097/psy.0000000000001278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
OBJECTIVE Eudaimonic facets of psychological well-being (PWB), like purpose in life and sense of mastery, are associated with healthy aging. Variation in the gut microbiome may be one pathway by which mental health influences age-related health outcomes. However, associations between eudaimonic PWB and the gut microbiome are understudied. We examined whether purpose in life and sense of mastery, separately, were associated with features of the gut microbiome in older women. METHODS Participants were from the Mind-Body Study ( N = 206, mean age = 61 years), a substudy of the Nurses' Health Study II cohort. In 2013, participants completed the Life Engagement Test and the Pearlin Mastery Scale. Three months later, up to two pairs of stool samples were collected, 6 months apart. Covariates included sociodemographics, depression, health status, and health behaviors. Analyses examined associations of PWB with gut microbiome taxonomic diversity, overall community structure, and specific species/pathways. To account for multiple testing, statistical significance was established using Benjamini-Hochberg adjusted p values (i.e., q values ≤0.25). RESULTS We found no evidence of an association between PWB and gut microbiome alpha diversity. In multivariate analysis, higher purpose levels were significantly associated with lower abundance of species previously linked with poorer health outcomes, notably Blautia hydrogenotrophica and Eubacterium ventriosum ( q values ≤0.25). No significant associations were found between PWB and metabolic pathways. CONCLUSIONS These findings offer early evidence suggesting that eudaimonic PWB is linked with variation in the gut microbiome, and this might be one pathway by which PWB promotes healthy aging.
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Affiliation(s)
- Anne-Josee Guimond
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
- Lee Kum Sheung Center for Health and Happiness, Harvard T. H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - Shanlin Ke
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Shelley S. Tworoger
- Department of Cancer Epidemiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Tianyi Huang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Andrew T. Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Laura D. Kubzansky
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
- Lee Kum Sheung Center for Health and Happiness, Harvard T. H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - Yang-Yu Liu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Center for Artificial Intelligence and Modeling, The Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA
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Wang T, Shi Z, Ren H, Xu M, Lu J, Yang F, Ye C, Wu K, Chen M, Xu X, Liu D, Kong L, Zheng R, Zheng J, Li M, Xu Y, Zhao Z, Chen Y, Yang H, Wang J, Ning G, Li J, Zhong H, Bi Y, Wang W. Divergent age-associated and metabolism-associated gut microbiome signatures modulate cardiovascular disease risk. Nat Med 2024; 30:1722-1731. [PMID: 38844795 DOI: 10.1038/s41591-024-03038-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 04/30/2024] [Indexed: 06/13/2024]
Abstract
Insight into associations between the gut microbiome with metabolism and aging is crucial for tailoring interventions to promote healthy longevity. In a discovery cohort of 10,207 individuals aged 40-93 years, we used 21 metabolic parameters to classify individuals into five clusters, termed metabolic multimorbidity clusters (MCs), that represent different metabolic subphenotypes. Compared to the cluster classified as metabolically healthy (MC1), clusters classified as 'obesity-related mixed' (MC4) and 'hyperglycemia' (MC5) exhibited an increased 11.1-year cardiovascular disease (CVD) risk by 75% (multivariable-adjusted hazard ratio (HR): 1.75, 95% confidence interval (CI): 1.43-2.14) and by 117% (2.17, 1.72-2.74), respectively. These associations were replicated in a second cohort of 9,061 individuals with a 10.0-year follow-up. Based on analysis of 4,491 shotgun fecal metagenomes from the discovery cohort, we found that gut microbial composition was associated with both MCs and age. Next, using 55 age-specific microbial species to capture biological age, we developed a gut microbial age (MA) metric, which was validated in four external cohorts comprising 4,425 metagenomic samples. Among individuals aged 60 years or older, the increased CVD risk associated with MC4 or MC5, as compared to MC1, MC2 or MC3, was exacerbated in individuals with high MA but diminished in individuals with low MA, independent of age, sex and other lifestyle and dietary factors. This pattern, in which younger MA appears to counteract the CVD risk attributable to metabolic dysfunction, implies a modulating role of MA in cardiovascular health for metabolically unhealthy older people.
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Affiliation(s)
- Tiange Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhun Shi
- BGI Research, Shenzhen, China
- Institute of Intelligent Medical Research (IIMR), BGI Genomics, Shenzhen, China
| | - Huahui Ren
- BGI Research, Shenzhen, China
- Institute of Intelligent Medical Research (IIMR), BGI Genomics, Shenzhen, China
| | - Min Xu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jieli Lu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Chaojie Ye
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kui Wu
- BGI Research, Shenzhen, China
- Institute of Intelligent Medical Research (IIMR), BGI Genomics, Shenzhen, China
- Guangdong Provincial Key Laboratory of Human Disease Genomics, BGI Research, Shenzhen, China
| | - Mingling Chen
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xun Xu
- BGI Research, Shenzhen, China
| | - Dong Liu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lijie Kong
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruizhi Zheng
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Zheng
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mian Li
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Xu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiyun Zhao
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuhong Chen
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | | | - Guang Ning
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Huanzi Zhong
- BGI Research, Shenzhen, China.
- Institute of Intelligent Medical Research (IIMR), BGI Genomics, Shenzhen, China.
| | - Yufang Bi
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Weiqing Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Láng L, McArthur S, Lazar AS, Pourtau L, Gaudout D, Pontifex MG, Müller M, Vauzour D. Dietary (Poly)phenols and the Gut-Brain Axis in Ageing. Nutrients 2024; 16:1500. [PMID: 38794738 PMCID: PMC11124177 DOI: 10.3390/nu16101500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/07/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
As the population ages, the incidence of age-related neurodegenerative diseases is rapidly increasing, and novel approaches to mitigate this soaring prevalence are sorely needed. Recent studies have highlighted the importance of gut microbial homeostasis and its impact on brain functions, commonly referred to as the gut-brain axis, in maintaining overall health and wellbeing. Nonetheless, the mechanisms by which this system acts remains poorly defined. In this review, we will explore how (poly)phenols, a class of natural compounds found in many plant-based foods and beverages, can modulate the gut-brain axis, and thereby promote neural health. While evidence indicates a beneficial role of (poly)phenol consumption as part of a balanced diet, human studies are scarce and mechanistic insight is still lacking. In this regard, we make the case that dietary (poly)phenols should be further explored to establish their therapeutic efficacy on brain health through modulation of the gut-brain axis, with much greater emphasis on carefully designed human interventions.
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Affiliation(s)
- Léonie Láng
- Norwich Medical School, Biomedical Research Centre, University of East Anglia, Norwich NR4 7TJ, UK; (L.L.); (M.M.)
| | - Simon McArthur
- Faculty of Medicine & Dentistry, Queen Mary, University of London, Blizard Institute, London E1 2AT, UK;
| | - Alpar S. Lazar
- Faculty of Medicine and Health Sciences, The Queen’s Building, University of East Anglia, Norwich NR4 7TJ, UK; (A.S.L.); (M.G.P.)
| | - Line Pourtau
- Activ’Inside, 33750 Beychac et Caillau, France; (L.P.); (D.G.)
| | - David Gaudout
- Activ’Inside, 33750 Beychac et Caillau, France; (L.P.); (D.G.)
| | - Matthew G. Pontifex
- Faculty of Medicine and Health Sciences, The Queen’s Building, University of East Anglia, Norwich NR4 7TJ, UK; (A.S.L.); (M.G.P.)
| | - Michael Müller
- Norwich Medical School, Biomedical Research Centre, University of East Anglia, Norwich NR4 7TJ, UK; (L.L.); (M.M.)
| | - David Vauzour
- Norwich Medical School, Biomedical Research Centre, University of East Anglia, Norwich NR4 7TJ, UK; (L.L.); (M.M.)
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44
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An R, Venkatraman A, Binns J, Saric C, Rey FE, Thibeault SL. Age and sex-related variations in murine laryngeal microbiota. PLoS One 2024; 19:e0300672. [PMID: 38743725 PMCID: PMC11093383 DOI: 10.1371/journal.pone.0300672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/01/2024] [Indexed: 05/16/2024] Open
Abstract
The larynx undergoes significant age and sex-related changes in structure and function across the lifespan. Emerging evidence suggests that laryngeal microbiota influences immunological processes. Thus, there is a critical need to delineate microbial mechanisms that may underlie laryngeal physiological and immunological changes. As a first step, the present study explored potential age and sex-related changes in the laryngeal microbiota across the lifespan in a murine model. We compared laryngeal microbial profiles of mice across the lifespan (adolescents, young adults, older adults and elderly) to determine age and sex-related microbial variation on 16s rRNA gene sequencing. Measures of alpha diversity and beta diversity were obtained, along with differentially abundant taxa across age groups and biological sexes. There was relative stability of the laryngeal microbiota within each age group and no significant bacterial compositional shift in the laryngeal microbiome across the lifespan. There was an abundance of short-chain fatty acid producing bacteria in the adolescent group, unique to the laryngeal microbiota; taxonomic changes in the elderly resembled that of the aged gut microbiome. There were no significant changes in the laryngeal microbiota relating to biological sex. This is the first study to report age and sex-related variation in laryngeal microbiota. This data lays the groundwork for defining how age-related microbial mechanisms may govern laryngeal health and disease. Bacterial compositional changes, as a result of environmental or systemic stimuli, may not only be indicative of laryngeal-specific metabolic and immunoregulatory processes, but may precede structural and functional age-related changes in laryngeal physiology.
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Affiliation(s)
- Ran An
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Anumitha Venkatraman
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America
| | - John Binns
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Callie Saric
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Federico E. Rey
- Department of Bacteriology, College of Agriculture and Life Sciences, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Susan L. Thibeault
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America
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45
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Wasén C, Beauchamp LC, Vincentini J, Li S, LeServe DS, Gauthier C, Lopes JR, Moreira TG, Ekwudo MN, Yin Z, da Silva P, Krishnan RK, Butovsky O, Cox LM, Weiner HL. Bacteroidota inhibit microglia clearance of amyloid-beta and promote plaque deposition in Alzheimer's disease mouse models. Nat Commun 2024; 15:3872. [PMID: 38719797 PMCID: PMC11078963 DOI: 10.1038/s41467-024-47683-w] [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: 09/27/2022] [Accepted: 04/03/2024] [Indexed: 05/12/2024] Open
Abstract
The gut microbiota and microglia play critical roles in Alzheimer's disease (AD), and elevated Bacteroides is correlated with cerebrospinal fluid amyloid-β (Aβ) and tau levels in AD. We hypothesize that Bacteroides contributes to AD by modulating microglia. Here we show that administering Bacteroides fragilis to APP/PS1-21 mice increases Aβ plaques in females, modulates cortical amyloid processing gene expression, and down regulates phagocytosis and protein degradation microglial gene expression. We further show that administering Bacteroides fragilis to aged wild-type male and female mice suppresses microglial uptake of Aβ1-42 injected into the hippocampus. Depleting murine Bacteroidota with metronidazole decreases amyloid load in aged 5xFAD mice, and activates microglial pathways related to phagocytosis, cytokine signaling, and lysosomal degradation. Taken together, our study demonstrates that members of the Bacteroidota phylum contribute to AD pathogenesis by suppressing microglia phagocytic function, which leads to impaired Aβ clearance and accumulation of amyloid plaques.
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Affiliation(s)
- Caroline Wasén
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Leah C Beauchamp
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Julia Vincentini
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Shuqi Li
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Danielle S LeServe
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Christian Gauthier
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Juliana R Lopes
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Thais G Moreira
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Millicent N Ekwudo
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Zhuoran Yin
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA
| | - Patrick da Silva
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Rajesh K Krishnan
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Oleg Butovsky
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Laura M Cox
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Howard L Weiner
- Ann Romney Center for Neurologic Diseases, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA.
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46
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Zimmermann J, Piecyk A, Sieber M, Petersen C, Johnke J, Moitinho-Silva L, Künzel S, Bluhm L, Traulsen A, Kaleta C, Schulenburg H. Gut-associated functions are favored during microbiome assembly across a major part of C. elegans life. mBio 2024; 15:e0001224. [PMID: 38634692 PMCID: PMC11077962 DOI: 10.1128/mbio.00012-24] [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: 01/02/2024] [Accepted: 03/22/2024] [Indexed: 04/19/2024] Open
Abstract
The microbiome expresses a variety of functions that influence host biology. The range of functions depends on the microbiome's composition, which can change during the host's lifetime due to neutral assembly processes, host-mediated selection, and environmental conditions. To date, the exact dynamics of microbiome assembly, the underlying determinants, and the effects on host-associated functions remain poorly understood. Here, we used the nematode Caenorhabditis elegans and a defined community of fully sequenced, naturally associated bacteria to study microbiome dynamics and functions across a major part of the worm's lifetime of hosts under controlled experimental conditions. Bacterial community composition initially shows strongly declining levels of stochasticity, which increases during later time points, suggesting selective effects in younger animals as opposed to more random processes in older animals. The adult microbiome is enriched in genera Ochrobactrum and Enterobacter compared to the direct substrate and a host-free control environment. Using pathway analysis, metabolic, and ecological modeling, we further find that the lifetime assembly dynamics increase competitive strategies and gut-associated functions in the host-associated microbiome, indicating that the colonizing bacteria benefit the worm. Overall, our study introduces a framework for studying microbiome assembly dynamics based on stochastic, ecological, and metabolic models, yielding new insights into the processes that determine host-associated microbiome composition and function. IMPORTANCE The microbiome plays a crucial role in host biology. Its functions depend on the microbiome composition that can change during a host's lifetime. To date, the dynamics of microbiome assembly and the resulting functions still need to be better understood. This study introduces a new approach to characterize the functional consequences of microbiome assembly by modeling both the relevance of stochastic processes and metabolic characteristics of microbial community changes. The approach was applied to experimental time-series data obtained for the microbiome of the nematode Caenorhabditis elegans across the major part of its lifetime. Stochastic processes played a minor role, whereas beneficial bacteria as well as gut-associated functions enriched in hosts. This indicates that the host might actively shape the composition of its microbiome. Overall, this study provides a framework for studying microbiome assembly dynamics and yields new insights into C. elegans microbiome functions.
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Affiliation(s)
- Johannes Zimmermann
- Research Group Evolutionary Ecology and Genetics, Zoological Institute, Kiel University, Kiel, Germany
- Max Planck Fellow Group Antibiotic Resistance Evolution, Max Planck Institute for Evolutionary Biology, Ploen, Germany
- Research Group Medical Systems Biology, Institute of Experimental Medicine, Kiel University, Kiel, Germany
| | - Agnes Piecyk
- Research Group Evolutionary Ecology and Genetics, Zoological Institute, Kiel University, Kiel, Germany
| | - Michael Sieber
- Department for Evolutionary Theory, Max Planck Institute for Evolutionary Biology, Ploen, Germany
| | - Carola Petersen
- Research Group Evolutionary Ecology and Genetics, Zoological Institute, Kiel University, Kiel, Germany
| | - Julia Johnke
- Research Group Evolutionary Ecology and Genetics, Zoological Institute, Kiel University, Kiel, Germany
| | - Lucas Moitinho-Silva
- />Institute of Clinical Molecular Biology, Christian-Albrechts University, Kiel, Germany
| | - Sven Künzel
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Ploen, Germany
| | - Lena Bluhm
- Research Group Evolutionary Ecology and Genetics, Zoological Institute, Kiel University, Kiel, Germany
| | - Arne Traulsen
- Department for Evolutionary Theory, Max Planck Institute for Evolutionary Biology, Ploen, Germany
| | - Christoph Kaleta
- Research Group Medical Systems Biology, Institute of Experimental Medicine, Kiel University, Kiel, Germany
| | - Hinrich Schulenburg
- Research Group Evolutionary Ecology and Genetics, Zoological Institute, Kiel University, Kiel, Germany
- Max Planck Fellow Group Antibiotic Resistance Evolution, Max Planck Institute for Evolutionary Biology, Ploen, Germany
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47
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Durgan DJ, Zubcevic J, Vijay-Kumar M, Yang T, Manandhar I, Aryal S, Muralitharan RR, Li HB, Li Y, Abais-Battad JM, Pluznick JL, Muller DN, Marques FZ, Joe B. Prospects for Leveraging the Microbiota as Medicine for Hypertension. Hypertension 2024; 81:951-963. [PMID: 38630799 DOI: 10.1161/hypertensionaha.124.21721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Affiliation(s)
- David J Durgan
- Department of Integrative Physiology and Anesthesiology, Baylor College of Medicine, Houston, TX (D.J.D.)
| | - Jasenka Zubcevic
- Center for Hypertension and Precision Medicine, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Microbiome Consortium, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
| | - Matam Vijay-Kumar
- Center for Hypertension and Precision Medicine, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Microbiome Consortium, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
| | - Tao Yang
- Center for Hypertension and Precision Medicine, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Microbiome Consortium, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
| | - Ishan Manandhar
- Center for Hypertension and Precision Medicine, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Microbiome Consortium, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
| | - Sachin Aryal
- Center for Hypertension and Precision Medicine, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Microbiome Consortium, Toledo, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, OH (J.Z., M.V.-K., T.Y., I.M., S.A., B.J.)
| | - Rikeish R Muralitharan
- Hypertension Research Laboratory, School of Biological Sciences, Monash University, Melbourne, Australia (R.R.M., F.Z.M.)
- Victorian Heart Institute, Monash University, Melbourne, Australia (R.R.M., F.Z.M.)
- Baker Heart and Diabetes Institute, Melbourne, Australia (R.R.M., F.Z.M.)
| | - Hong-Bao Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, PR China (H.-B.L., Y.L.)
| | - Ying Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, PR China (H.-B.L., Y.L.)
| | | | - Jennifer L Pluznick
- Department of Physiology, Johns Hopkins School of Medicine, Baltimore, MD (J.L.P.)
| | - Dominik N Muller
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany (D.N.M.)
- Experimental and Clinical Research Center, a cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Germany (D.N.M.)
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany (D.N.M.)
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany (D.N.M.)
| | - Francine Z Marques
- Hypertension Research Laboratory, School of Biological Sciences, Monash University, Melbourne, Australia (R.R.M., F.Z.M.)
- Victorian Heart Institute, Monash University, Melbourne, Australia (R.R.M., F.Z.M.)
- Baker Heart and Diabetes Institute, Melbourne, Australia (R.R.M., F.Z.M.)
| | - Bina Joe
- Department of Integrative Physiology and Anesthesiology, Baylor College of Medicine, Houston, TX (D.J.D.)
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48
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O'Toole PW. Ageing, microbes and health. Microb Biotechnol 2024; 17:e14477. [PMID: 38801344 PMCID: PMC11129672 DOI: 10.1111/1751-7915.14477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/29/2024] Open
Abstract
The human gut microbiome is a modifier of the risk for many non-communicable diseases throughout the lifespan. In ageing, the effect of the microbiome appears to be more pronounced because of the lower physiological reserve. Microbial metabolites and other bioactive products act upon some of the key physiological processes involved in the Hallmarks of Ageing. Dietary interventions that delay age-related change in the microbiome have also led to delayed onset of ageing-related health loss, and improved levels of cognitive function, inflammatory status and frailty. Cross-sectional analysis of thousands of gut microbiome datasets from around the world has identified key taxa that are depleted during accelerated health loss, and other taxa that become more abundant, but these signatures differ in some geographical regions. The key challenges for research in this area are to experimentally prove that particular species or strains directly contribute to health-related ageing outcomes, and to develop practical ways of retaining or re-administering them on a population basis. The promotion of a health-associated gut microbiome in ageing mirrors the challenge of maintaining planetary microbial ecosystems in the face of anthropogenic effects and climate change. Lessons learned from acting at the individual level can inform microbiome-targeting strategies for achieving Sustainable Development Goals at a global level.
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Affiliation(s)
- Paul W. O'Toole
- School of MicrobiologyUniversity College CorkCorkIreland
- APC Microbiome IrelandUniversity College CorkCorkIreland
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49
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DeClercq V, Wright RJ, Nearing JT, Langille MGI. Oral microbial signatures associated with age and frailty in Canadian adults. Sci Rep 2024; 14:9685. [PMID: 38678061 PMCID: PMC11055859 DOI: 10.1038/s41598-024-60409-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 04/23/2024] [Indexed: 04/29/2024] Open
Abstract
This study aimed to assess the association between the oral microbiome, age, and frailty. Data and saliva samples were obtained from male and female participants aged 35-70 years (n = 1357). Saliva samples were analysed by 16S rRNA gene sequencing and differences in microbial diversity and community compositions were examined in relation to chronological age and the frailty index (FI). Most alpha diversity measures (Richness, Shannon Diversity, Faith's Phylogenetic Diversity) showed an inverse association with frailty, whereas a positive association was observed with age and Shannon Diversity and Evenness. A further sex-stratified analysis revealed differences in measures of microbial diversity and composition. Multiple genera were detected as significantly differentially abundant with increasing frailty and age by at least two methods. With age, the relative abundance of Veillonella was reduced in both males and females, whereas increases in Corynebacterium appeared specific to males and Aggregatibacter, Fusobacterium, Neisseria, Stomatobaculum, and Porphyromonas specific to females. Beta diversity was significantly associated with multiple mental health components of the FI. This study shows age and frailty are differentially associated with measures of microbial diversity and composition, suggesting the oral microbiome may be a useful indicator of increased risk of frailty or a potential target for improving health in ageing adults.
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Affiliation(s)
- Vanessa DeClercq
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada.
- Department of Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada.
| | - Robyn J Wright
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jacob T Nearing
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Morgan G I Langille
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
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50
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Scuto M, Rampulla F, Reali GM, Spanò SM, Trovato Salinaro A, Calabrese V. Hormetic Nutrition and Redox Regulation in Gut-Brain Axis Disorders. Antioxidants (Basel) 2024; 13:484. [PMID: 38671931 PMCID: PMC11047582 DOI: 10.3390/antiox13040484] [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: 02/29/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The antioxidant and anti-inflammatory effects of hormetic nutrition for enhancing stress resilience and overall human health have received much attention. Recently, the gut-brain axis has attracted prominent interest for preventing and therapeutically impacting neuropathologies and gastrointestinal diseases. Polyphenols and polyphenol-combined nanoparticles in synergy with probiotics have shown to improve gut bioavailability and blood-brain barrier (BBB) permeability, thus inhibiting the oxidative stress, metabolic dysfunction and inflammation linked to gut dysbiosis and ultimately the onset and progression of central nervous system (CNS) disorders. In accordance with hormesis, polyphenols display biphasic dose-response effects by activating at a low dose the Nrf2 pathway resulting in the upregulation of antioxidant vitagenes, as in the case of heme oxygenase-1 upregulated by hidrox® or curcumin and sirtuin-1 activated by resveratrol to inhibit reactive oxygen species (ROS) overproduction, microbiota dysfunction and neurotoxic damage. Importantly, modulation of the composition and function of the gut microbiota through polyphenols and/or probiotics enhances the abundance of beneficial bacteria and can prevent and treat Alzheimer's disease and other neurological disorders. Interestingly, dysregulation of the Nrf2 pathway in the gut and the brain can exacerbate selective susceptibility under neuroinflammatory conditions to CNS disorders due to the high vulnerability of vagal sensory neurons to oxidative stress. Herein, we aimed to discuss hormetic nutrients, including polyphenols and/or probiotics, targeting the Nrf2 pathway and vitagenes for the development of promising neuroprotective and therapeutic strategies to suppress oxidative stress, inflammation and microbiota deregulation, and consequently improve cognitive performance and brain health. In this review, we also explore interactions of the gut-brain axis based on sophisticated and cutting-edge technologies for novel anti-neuroinflammatory approaches and personalized nutritional therapies.
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Affiliation(s)
- Maria Scuto
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95124 Catania, Italy; (F.R.); (G.M.R.); (S.M.S.); (V.C.)
| | | | | | | | - Angela Trovato Salinaro
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95124 Catania, Italy; (F.R.); (G.M.R.); (S.M.S.); (V.C.)
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