1
|
Takahashi S, Nakagawa K, Nagata W, Koizumi A, Ishizuka T. A preliminary therapeutic study of the effects of molecular hydrogen on intestinal dysbiosis and small intestinal injury in high-fat diet-loaded senescence-accelerated mice. Nutrition 2024; 122:112372. [PMID: 38428218 DOI: 10.1016/j.nut.2024.112372] [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: 03/02/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 03/03/2024]
Abstract
OBJECTIVES Aging and excessive fat intake may additively induce dysbiosis of the gut microbiota and intestinal inflammatory damage. Here, we analyzed microbiota dysbiosis and intestinal injury in high-fat diet-loaded senescence-accelerated mice (SAMP8). Additionally, we examined whether treatment with molecular hydrogen could improve the intestinal environment. METHODS SAMP8 and SAMR1 (control) mice were first fed a normal diet (ND) or high-fat diet (HFD) for 10 wk (n = 10 each group). Subsequently, HFD was supplemented with a placebo jelly or hydrogen-rich jelly (HRJ) for 4 wk. After treatment, isolated small intestinal tissues were used for hematoxylin and eosin staining, immunofluorescence staining, and thiobarbituric acid reactive substances (TBARS) assay. Furthermore, we analyzed alterations in the microbiota composition in cecal feces using 16S rRNA gene analysis for microbiota profiling. Statistical analyses were performed using unpaired Student's t tests or one-way analysis of variance and Tukey's post hoc test for multiple comparisons. RESULT HFD feeding reduced the expression of caudal-related homeobox transcription factor 2 (CDX2) and 5-bromo-2'-deoxyuridine (BrdU) and enhanced malondialdehyde (MDA) levels in the small intestine of SAMP8. HRJ treatment improved the reduction in CDX2 and BrdU and enhanced MDA levels. We performed a sequence analysis of the gut microbiota at the genus level and identified 283 different bacterial genera from the 30 samples analyzed in the study. Among them, Parvibacter positively correlated with both HFD intake and aging, whereas 10 bacteria, including Anaerofustis, Anaerosporobacter, Butyricicoccus, and Ruminococcus were negatively correlated with both HFD and aging. HRJ treatment increased Lactinobactor and decreased Akkermansia, Gracilibacter, and Marvinbryantia abundance. CONCLUSION Our findings suggest that treatment with molecular hydrogen may affect microbiota profiling and suppress intestinal injury in HFD-loaded SAMP8.
Collapse
Affiliation(s)
- Sayaka Takahashi
- Department of Pharmacology of National Defense Medical College, Saitama, Japan.
| | - Keiichi Nakagawa
- Department of Pharmacology of National Defense Medical College, Saitama, Japan
| | - Wataru Nagata
- Department of Pharmacology of National Defense Medical College, Saitama, Japan
| | - Akiho Koizumi
- Department of Pharmacology of National Defense Medical College, Saitama, Japan
| | - Toshiaki Ishizuka
- Department of Pharmacology of National Defense Medical College, Saitama, Japan
| |
Collapse
|
2
|
Pietrzak A, Banasiewicz T. Applicability of sodium butyrate preparations from a surgeon's and gastroenterologist's perspective. POLISH JOURNAL OF SURGERY 2024; 96:68-73. [PMID: 38629276 DOI: 10.5604/01.3001.0054.4152] [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: 04/19/2024]
Abstract
In recent years, much has been written about the possibilities of using exogenous sodium butyrate in the prevention and treatment of gastrointestinal diseases, in prehabilitation, in peri- and postoperative treatment, as well as its local application. It became possible thanks to the development of a special formulation (microencapsulation technique) enabling the delivery of unstable butyrate compounds to the large intestine, where it is used primarily as a source of energy. It also plays a key role in maintaining body homeostasis by maintaining the integrity of the intestinal epithelium and stimulating the intestinal immune system. There is growing evidence of the effectiveness of sodium butyrate in various areas of health. The following article discusses the possibilities of using microencapsulated sodium butyrate in the prevention and treatment of gastrointestinal diseases from the perspective of a gastroenterologist and gastrointestinal surgeon.
Collapse
Affiliation(s)
- Anna Pietrzak
- 2nd Department of Gastroenterology, Centre of Postgraduate Medical Education, Warsaw, Poland; Department of Gastroenterology, Bielanski Hospital in Warsaw, Poland
| | - Tomasz Banasiewicz
- Chair and Department of General Surgery, Endocrine and Gastroenterological Oncology, Poznan University of Medical Sciences, Poznan, Poland
| |
Collapse
|
3
|
Daly AC, Cambuli F, Äijö T, Lötstedt B, Marjanovic N, Kuksenko O, Smith-Erb M, Fernandez S, Domovic D, Van Wittenberghe N, Drokhlyansky E, Griffin GK, Phatnani H, Bonneau R, Regev A, Vickovic S. Tissue and cellular spatiotemporal dynamics in colon aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.22.590125. [PMID: 38712088 PMCID: PMC11071407 DOI: 10.1101/2024.04.22.590125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Tissue structure and molecular circuitry in the colon can be profoundly impacted by systemic age-related effects, but many of the underlying molecular cues remain unclear. Here, we built a cellular and spatial atlas of the colon across three anatomical regions and 11 age groups, encompassing ~1,500 mouse gut tissues profiled by spatial transcriptomics and ~400,000 single nucleus RNA-seq profiles. We developed a new computational framework, cSplotch, which learns a hierarchical Bayesian model of spatially resolved cellular expression associated with age, tissue region, and sex, by leveraging histological features to share information across tissue samples and data modalities. Using this model, we identified cellular and molecular gradients along the adult colonic tract and across the main crypt axis, and multicellular programs associated with aging in the large intestine. Our multi-modal framework for the investigation of cell and tissue organization can aid in the understanding of cellular roles in tissue-level pathology.
Collapse
Affiliation(s)
- Aidan C. Daly
- New York Genome Center, New York, NY, USA
- Center for Computational Biology, Flatiron Institute, New York, NY, USA
| | | | - Tarmo Äijö
- Center for Computational Biology, Flatiron Institute, New York, NY, USA
| | - Britta Lötstedt
- New York Genome Center, New York, NY, USA
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Nemanja Marjanovic
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Olena Kuksenko
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
| | | | | | | | | | - Eugene Drokhlyansky
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Gabriel K Griffin
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Hemali Phatnani
- New York Genome Center, New York, NY, USA
- Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
| | - Richard Bonneau
- Center for Computational Biology, Flatiron Institute, New York, NY, USA
- Center for Data Science, New York University, New York, NY, USA
- Current address: Genentech, 1 DNA Way, South San Francisco, CA, USA
| | - Aviv Regev
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Current address: Genentech, 1 DNA Way, South San Francisco, CA, USA
| | - Sanja Vickovic
- New York Genome Center, New York, NY, USA
- Klarman Cell Observatory Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Biomedical Engineering and Herbert Irving Institute for Cancer Dynamics, Columbia University, New York, NY, USA
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Beijer Laboratory for Gene and Neuro Research, Uppsala University, Uppsala, Sweden
| |
Collapse
|
4
|
Chen LA, Boyle K. The Role of the Gut Microbiome in Health and Disease in the Elderly. Curr Gastroenterol Rep 2024:10.1007/s11894-024-00932-w. [PMID: 38642272 DOI: 10.1007/s11894-024-00932-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [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.
Collapse
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
| |
Collapse
|
5
|
Williams A. Multiomics data integration, limitations, and prospects to reveal the metabolic activity of the coral holobiont. FEMS Microbiol Ecol 2024; 100:fiae058. [PMID: 38653719 PMCID: PMC11067971 DOI: 10.1093/femsec/fiae058] [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: 09/26/2023] [Revised: 03/25/2024] [Accepted: 04/22/2024] [Indexed: 04/25/2024] Open
Abstract
Since their radiation in the Middle Triassic period ∼240 million years ago, stony corals have survived past climate fluctuations and five mass extinctions. Their long-term survival underscores the inherent resilience of corals, particularly when considering the nutrient-poor marine environments in which they have thrived. However, coral bleaching has emerged as a global threat to coral survival, requiring rapid advancements in coral research to understand holobiont stress responses and allow for interventions before extensive bleaching occurs. This review encompasses the potential, as well as the limits, of multiomics data applications when applied to the coral holobiont. Synopses for how different omics tools have been applied to date and their current restrictions are discussed, in addition to ways these restrictions may be overcome, such as recruiting new technology to studies, utilizing novel bioinformatics approaches, and generally integrating omics data. Lastly, this review presents considerations for the design of holobiont multiomics studies to support lab-to-field advancements of coral stress marker monitoring systems. Although much of the bleaching mechanism has eluded investigation to date, multiomic studies have already produced key findings regarding the holobiont's stress response, and have the potential to advance the field further.
Collapse
Affiliation(s)
- Amanda Williams
- Microbial Biology Graduate Program, Rutgers University, 76 Lipman Drive, New Brunswick, NJ 08901, United States
- Department of Biochemistry and Microbiology, Rutgers University, 76 Lipman Drive, New Brunswick, NJ 08901, United States
| |
Collapse
|
6
|
Sun R, Feng J, Wang J. Underlying Mechanisms and Treatment of Cellular Senescence-Induced Biological Barrier Interruption and Related Diseases. Aging Dis 2024; 15:612-639. [PMID: 37450933 PMCID: PMC10917536 DOI: 10.14336/ad.2023.0621] [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: 04/03/2023] [Accepted: 06/21/2023] [Indexed: 07/18/2023] Open
Abstract
Given its increasing prevalence, aging is of great concern to researchers worldwide. Cellular senescence is a physiological or pathological cellular state caused by aging and a prominent risk factor for the interruption of the integrity and functionality of human biological barriers. Health barriers play an important role in maintaining microenvironmental homeostasis within the body. The senescence of barrier cells leads to barrier dysfunction and age-related diseases. Cellular senescence has been reported to be a key target for the prevention of age-related barrier diseases, including Alzheimer's disease, Parkinson's disease, age-related macular degeneration, diabetic retinopathy, and preeclampsia. Drugs such as metformin, dasatinib, quercetin, BCL-2 inhibitors, and rapamycin have been shown to intervene in cellular senescence and age-related diseases. In this review, we conclude that cellular senescence is involved in age-related biological barrier impairment. We further outline the cellular pathways and mechanisms underlying barrier impairment caused by cellular senescence and describe age-related barrier diseases associated with senescent cells. Finally, we summarize the currently used anti-senescence pharmacological interventions and discuss their therapeutic potential for preventing age-related barrier diseases.
Collapse
Affiliation(s)
- Ruize Sun
- Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shenyang, China
| | - Juan Feng
- Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shenyang, China
| | - Jue Wang
- Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shenyang, China
| |
Collapse
|
7
|
Young P, Henningsen K, Snipe R, Gaskell S, Alcock R, Mika A, Rauch C, Costa RJS. Does Age Influence Gastrointestinal Status Responses to Exertional-heat Stress? Int J Sports Med 2024; 45:272-281. [PMID: 38198808 DOI: 10.1055/a-2195-3131] [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: 01/12/2024]
Abstract
This meta-data exploration aimed to determine the impact of exertional-heat stress (EHS) on gastrointestinal status of masters age and young adult endurance athletes. Sixteen MASTERS (mean: 44y) and twenty-one YOUNG (26y) recreational endurance athletes completed 2 h of running at 60% ˙V O2max in 35˚C ambient conditions. Blood samples were collected pre-, immediately and 1 h post-EHS, and analyzed for markers of exercise-induced gastrointestinal syndrome (EIGS). Thermo-physiological measures and gastrointestinal symptoms (GIS) were recorded every 10-20 min during EHS. Peak Δ pre- to post-EHS did not substantially differ (p>0.05) between MASTERS and YOUNG for intestinal epithelial injury [I-FABP: 1652pg/ml vs. 1524pg/ml, respectively], bacterial endotoxic translocation [sCD14: -0.09µg/mL vs. 0.84µg/mL, respectively], lipopolysaccharide-binding protein [LBP: 0.26µg/mL vs. 1.76µg/mL, respectively], and systemic inflammatory response profile (SIR-Profile: 92.0arb.unit vs. 154arb.unit, respectively). A significantly higher peak Δ pre- to post-EHS in endogenous endotoxin anti-body IgM (p=0.042), and pro-inflammatory cytokine IL-1β (p=0.038), was observed in YOUNG compared to MASTERS. No difference was observed between incidence (81% and 80%, respectively) and severity (summative accumulation: 21 and 30, respectively) of reported GIS during EHS between MASTERS and YOUNG. Pathophysiology of EIGS in response to EHS does not substantially differ with age progression, since masters and younger adult endurance athletes responded comparably.
Collapse
Affiliation(s)
- Pascale Young
- Department of Nutrition Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
| | - Kayla Henningsen
- Department of Nutrition Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
| | - Rhiannon Snipe
- Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Burwood, Victoria, Australia
| | - Stephanie Gaskell
- Department of Nutrition Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
| | | | - Alice Mika
- Department of Nutrition Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
| | - Christopher Rauch
- Department of Nutrition Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
| | - Ricardo J S Costa
- Department of Nutrition Dietetics & Food, Monash University, Notting Hill, Victoria, Australia
| |
Collapse
|
8
|
Eskiocak O, Chowdhury S, Shah V, Nnuji-John E, Chung C, Boyer JA, Harris AS, Habel J, Sadelain M, Beyaz S, Amor C. Senolytic CAR T cells reverse aging-associated defects in intestinal regeneration and fitness. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.19.585779. [PMID: 38529506 PMCID: PMC10962734 DOI: 10.1101/2024.03.19.585779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Intestinal stem cells (ISCs) drive the rapid regeneration of the gut epithelium to maintain organismal homeostasis. Aging, however, significantly reduces intestinal regenerative capacity. While cellular senescence is a key feature of the aging process, little is known about the in vivo effects of senescent cells on intestinal fitness. Here, we identify the accumulation of senescent cells in the aging gut and, by harnessing senolytic CAR T cells to eliminate them, we uncover their detrimental impact on epithelial integrity and overall intestinal homeostasis in natural aging, injury and colitis. Ablation of intestinal senescent cells with senolytic CAR T cells in vivo or in vitro is sufficient to promote the regenerative potential of aged ISCs. This intervention improves epithelial integrity and mucosal immune function. Overall, these results highlight the ability of senolytic CAR T cells to rejuvenate the intestinal niche and demonstrate the potential of targeted cell therapies to promote tissue regeneration in aging organisms.
Collapse
Affiliation(s)
- Onur Eskiocak
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
- Graduate Program in Genetics, Stony Brook University; NY, USA
| | | | - Vyom Shah
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
| | - Emmanuella Nnuji-John
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
- School of Biological Sciences, Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
| | - Charlie Chung
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
| | - Jacob A. Boyer
- Lewis Sigler Institute for Integrative Genomics and Department of Chemistry, Princeton University; Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton Branch, Princeton, NJ, USA
| | | | - Jill Habel
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
| | - Michel Sadelain
- Center for Cell Engineering, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Semir Beyaz
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
| | - Corina Amor
- Cold Spring Harbor Laboratory; Cold Spring Harbor, NY, USA
| |
Collapse
|
9
|
Le Cosquer G, Vergnolle N, Motta JP. Gut microb-aging and its relevance to frailty aging. Microbes Infect 2024; 26:105309. [PMID: 38316374 DOI: 10.1016/j.micinf.2024.105309] [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: 09/25/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
This review explores 'microb-aging' in the gut and its potential link to frailty aging. We explore this connection through alterations in microbiota's taxonomy and metabolism, as well as with concepts of ecological resilience, pathobionts emergence, and biogeography. We examine microb-aging in interconnected body organs, emphasizing the bidirectional relationship with 'inflammaging'. Finally, we discuss how targeting microb-aging could improve screening, diagnostic, and therapeutic approaches in geriatrics.
Collapse
Affiliation(s)
- Guillaume Le Cosquer
- Institute of Digestive Health Research, IRSD, Toulouse University, INSERM U1220, INRAe, ENVT, UPS, 31300 Toulouse, France; Department of Gastroenterology and Pancreatology, Toulouse University Hospital, Toulouse Paul Sabatier University, 31059 Toulouse, France
| | - Nathalie Vergnolle
- Institute of Digestive Health Research, IRSD, Toulouse University, INSERM U1220, INRAe, ENVT, UPS, 31300 Toulouse, France; Department of Physiology & Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Jean-Paul Motta
- Institute of Digestive Health Research, IRSD, Toulouse University, INSERM U1220, INRAe, ENVT, UPS, 31300 Toulouse, France.
| |
Collapse
|
10
|
Shi R, Ye J, Fan H, Hu X, Wu X, Wang D, Zhao B, Dai X, Liu X. Lactobacillus plantarum LLY-606 Supplementation Ameliorates the Cognitive Impairment of Natural Aging in Mice: The Potential Role of Gut Microbiota Homeostasis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4049-4062. [PMID: 38373323 DOI: 10.1021/acs.jafc.3c07041] [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: 02/21/2024]
Abstract
This work explored the effects of Lactobacillus plantarum LLY-606 (LLY-606) on cognitive function in aging mice. Our findings demonstrated that LLY-606 effectively prolonged the lifespan of mice and improved age-related cognitive impairments. Additionally, our study revealed that supplementation with LLY-606 resulted in the downregulation of inflammatory cytokine levels and the upregulation of antioxidant capacity. Furthermore, probiotic supplementation effectively mitigated the deterioration of the intestinal barrier function in aging mice. Amplicon analysis indicated the successful colonization of probiotics, facilitating the regulation of age-induced gut microbiota dysbiosis. Notably, the functional abundance prediction of microbiota indicated that tryptophan metabolism pathways, glutamatergic synapse pathways, propanoate metabolism pathways, and arginine and proline metabolism pathways were enriched after the LLY-606 intervention. In summary, LLY-606 emerged as a potential functional probiotic capable of influencing cognitive function in aging mice. This effect was achieved through the modulation of gut microbiota, the regulation of synaptic plasticity, and the enhancement of neurotrophic factor levels.
Collapse
Affiliation(s)
- Renjie Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Jin Ye
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Hua Fan
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Xinyun Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Xiaoning Wu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Danna Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Beita Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Xiaoshuang Dai
- BGI Institute of Applied Agriculture, BGI-Shenzhen, Shenzhen 518120, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| |
Collapse
|
11
|
Wang XM, Fan L, Meng CC, Wang YJ, Deng LE, Yuan Z, Zhang JP, Li YY, Lv SC. Gut microbiota influence frailty syndrome in older adults: mechanisms and therapeutic strategies. Biogerontology 2024; 25:107-129. [PMID: 38150088 DOI: 10.1007/s10522-023-10082-7] [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: 08/20/2023] [Accepted: 11/13/2023] [Indexed: 12/28/2023]
Abstract
Frailty syndrome denotes a decreased capacity of the body to maintain the homeostasis and stress of the internal environment, which simultaneously increases the risk of adverse health outcomes in older adults, including disability, hospitalization, falls, and death. To promote healthy aging, we should find strategies to cope with frailty. However, the pathogenesis of frailty syndrome is not yet clear. Recent studies have shown that the diversity, composition, and metabolites of gut microbiota significantly changed in older adults with frailty. In addition, several frailty symptoms were alleviated by adjusting gut microbiota with prebiotics, probiotics, and symbiosis. Therefore, we attempt to explore the pathogenesis of frailty syndrome in older people from gut microbiota and summarize the existing interventions for frailty syndrome targeting gut microbiota, with the aim of providing timely and necessary interventions and assistance for older adults with frailty.
Collapse
Affiliation(s)
- Xiao-Ming Wang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China
- School of Graduate, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lu Fan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China
- School of Graduate, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Chen-Chen Meng
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China
- School of Graduate, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yun-Jiao Wang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China
- School of Graduate, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Li-E Deng
- Nephrology department, Dongguan Hospital of Traditional Chinese Medicine, Dongguan, China
| | - Zhuo Yuan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China
| | - Jun-Ping Zhang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China
| | - Yan-Yang Li
- Department of Integrated Chinese and Western Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Shi-Chao Lv
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine (National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion), Tianjin, 300193, China.
- Tianjin Key Laboratory of Traditional Research of TCM Prescription and Syndrome, Tianjin, China.
| |
Collapse
|
12
|
Yonemoto Y, Nemoto Y, Morikawa R, Shibayama N, Oshima S, Nagaishi T, Mizutani T, Ito G, Fujii S, Okamoto R. Single cell analysis revealed that two distinct, unique CD4 + T cell subsets were increased in the small intestinal intraepithelial lymphocytes of aged mice. Front Immunol 2024; 15:1340048. [PMID: 38327516 PMCID: PMC10848332 DOI: 10.3389/fimmu.2024.1340048] [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: 11/19/2023] [Accepted: 01/02/2024] [Indexed: 02/09/2024] Open
Abstract
Recent advances in research suggest that aging has a controllable chronic inflammatory disease aspect. Aging systemic T cells, which secrete pro-inflammatory factors, affect surrounding somatic cells, and accelerate the aging process through chronic inflammation, have attracted attention as potential therapeutic targets in aging. On the other hand, there are few reports on the aging of the intestinal immune system, which differs from the systemic immune system in many ways. In the current study, we investigated the age-related changes in the intestinal immune system, particularly in T cells. The most significant changes were observed in the CD4+ T cells in the small intestinal IEL, with a marked increase in this fraction in old mice and reduced expression of CD27 and CD28, which are characteristic of aging systemic T cells. The proliferative capacity of aging IEL CD4+ T cells was significantly more reduced than that of aging systemic T cells. Transcriptome analysis showed that the expression of inflammatory cytokines was not upregulated, whereas Cd8α, NK receptors, and Granzymes were upregulated in aging IEL CD4+ T cells. Functional analysis showed that aging IEL T cells had a higher cytotoxic function against intestinal tumor organoids in vitro than young IEL T cells. scRNAseq revealed that splenic T cells show a transition from naïve to memory T cells, whereas intestinal T cells show the emergence of a CD8αα+CD4+ T cell fraction in aged mice, which is rarely seen in young cells. Further analysis of the aging IEL CD4+ T cells showed that two unique subsets are increased that are distinct from the systemic CD4+ T cells. Subset 1 has a pro-inflammatory component, with expression of IFNγ and upregulation of NFkB signaling pathways. Subset 2 does not express IFNγ, but upregulates inhibitory molecules and nIEL markers. Expression of granzymes and Cd8a was common to both. These fractions were in opposite positions in the clustering by UMAP and had different TCR repertoires. They may be involved in the suppression of intestinal aging and longevity through anti-tumor immunity, elimination of senescent cells and stressed cells in the aging environment. This finding could be a breakthrough in aging research.
Collapse
Affiliation(s)
- Yuki Yonemoto
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yasuhiro Nemoto
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ryo Morikawa
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Nana Shibayama
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Shigeru Oshima
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Institute of Research, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takashi Nagaishi
- Department of Advanced Therapeutics for Gastrointestinal Diseases, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tomohiro Mizutani
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Go Ito
- Advanced Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Satoru Fujii
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ryuichi Okamoto
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| |
Collapse
|
13
|
Maidana D, Arroyo-Álvarez A, Arenas-Loriente A, Barreres-Martín G, Muñoz-Alfonso C, Bompart Berroteran D, Esteve Claramunt F, Blanco del Burgo R, Cepas-Guillén P, Garcia-Blas S, Bonanad C. Inflammation as a New Therapeutic Target among Older Patients with Ischemic Heart Disease. J Clin Med 2024; 13:363. [PMID: 38256497 PMCID: PMC10816645 DOI: 10.3390/jcm13020363] [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: 12/17/2023] [Revised: 01/02/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Cardiovascular (CV) diseases remain a global health challenge, with ischemic heart disease (IHD) being the primary cause of both morbidity and mortality. Despite optimal pharmacological therapy, older patients with IHD exhibit an increased susceptibility to recurrent ischemic events, significantly impacting their prognosis. Inflammation is intricately linked with the aging process and plays a pivotal role in the evolution of atherosclerosis. Emerging anti-inflammatory therapies have shown promise in reducing ischemic events among high-risk populations. This review aims to explore the potential of targeted anti-inflammatory interventions in improving clinical outcomes and the quality of life for older patients with IHD.
Collapse
Affiliation(s)
- Daniela Maidana
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | - Andrea Arroyo-Álvarez
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | | | - Guillermo Barreres-Martín
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | - Carles Muñoz-Alfonso
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | - Daznia Bompart Berroteran
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | - Francisca Esteve Claramunt
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | - Regina Blanco del Burgo
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
| | | | - Sergio Garcia-Blas
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
- Cardiology Department, Clinic University Hospital of Valencia, 46026 Valencia, Spain
| | - Clara Bonanad
- INCLIVA—Instituto de Investigación Sanitaria, Biomedical Research Institute, 46010 Valencia, Spain (F.E.C.)
- Cardiology Department, Clinic University Hospital of Valencia, 46026 Valencia, Spain
| |
Collapse
|
14
|
Funk MC, Gleixner JG, Heigwer F, Vonficht D, Valentini E, Aydin Z, Tonin E, Del Prete S, Mahara S, Throm Y, Hetzer J, Heide D, Stegle O, Odom DT, Feldmann A, Haas S, Heikenwalder M, Boutros M. Aged intestinal stem cells propagate cell-intrinsic sources of inflammaging in mice. Dev Cell 2023; 58:2914-2929.e7. [PMID: 38113852 DOI: 10.1016/j.devcel.2023.11.013] [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: 08/16/2022] [Revised: 05/03/2023] [Accepted: 11/13/2023] [Indexed: 12/21/2023]
Abstract
Low-grade chronic inflammation is a hallmark of ageing, associated with impaired tissue function and disease development. However, how cell-intrinsic and -extrinsic factors collectively establish this phenotype, termed inflammaging, remains poorly understood. We addressed this question in the mouse intestinal epithelium, using mouse organoid cultures to dissect stem cell-intrinsic and -extrinsic sources of inflammaging. At the single-cell level, we found that inflammaging is established differently along the crypt-villus axis, with aged intestinal stem cells (ISCs) strongly upregulating major histocompatibility complex class II (MHC-II) genes. Importantly, the inflammaging phenotype was stably propagated by aged ISCs in organoid cultures and associated with increased chromatin accessibility at inflammation-associated loci in vivo and ex vivo, indicating cell-intrinsic inflammatory memory. Mechanistically, we show that the expression of inflammatory genes is dependent on STAT1 signaling. Together, our data identify that intestinal inflammaging in mice is promoted by a cell-intrinsic mechanism, stably propagated by ISCs, and associated with a disbalance in immune homeostasis.
Collapse
Affiliation(s)
- Maja C Funk
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany
| | - Jan G Gleixner
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany; German Cancer Research Center (DKFZ), Division of Computational Genomics and Systems Genetics, 69120 Heidelberg, Germany; Genome Biology Unit, European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany; Faculty of Biosciences, Heidelberg University, 69117 Heidelberg, Germany
| | - Florian Heigwer
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany; Department of Life Sciences and Engineering, University of Applied Sciences Bingen, 55411 Bingen am Rhein, Germany
| | - Dominik Vonficht
- Faculty of Biosciences, Heidelberg University, 69117 Heidelberg, Germany; Heidelberg Institute for Stem Cell Technology and Experimental Medicine, (HI-STEM gGmbH), 69120 Heidelberg, Germany; German Cancer Research Center (DKFZ), Division of Stem Cells and Cancer, DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Erica Valentini
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany
| | - Zeynep Aydin
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany
| | - Elena Tonin
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany
| | - Stefania Del Prete
- German Cancer Research Center (DKFZ), Division Regulatory Genomics and Cancer Evolution, 69120 Heidelberg, Germany
| | - Sylvia Mahara
- German Cancer Research Center (DKFZ), Junior Research Group Mechanisms of Genome Control, 69120 Heidelberg, Germany
| | - Yannick Throm
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany
| | - Jenny Hetzer
- German Cancer Research Center (DKFZ), Division Chronic Inflammation and Cancer, 69120 Heidelberg, Germany
| | - Danijela Heide
- German Cancer Research Center (DKFZ), Division Chronic Inflammation and Cancer, 69120 Heidelberg, Germany
| | - Oliver Stegle
- German Cancer Research Center (DKFZ), Division of Computational Genomics and Systems Genetics, 69120 Heidelberg, Germany; Genome Biology Unit, European Molecular Biology Laboratory (EMBL), 69117 Heidelberg, Germany
| | - Duncan T Odom
- German Cancer Research Center (DKFZ), Division Regulatory Genomics and Cancer Evolution, 69120 Heidelberg, Germany
| | - Angelika Feldmann
- German Cancer Research Center (DKFZ), Junior Research Group Mechanisms of Genome Control, 69120 Heidelberg, Germany
| | - Simon Haas
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine, (HI-STEM gGmbH), 69120 Heidelberg, Germany; German Cancer Research Center (DKFZ), Division of Stem Cells and Cancer, DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany; Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, 10178 Berlin, Germany; Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, 10115 Berlin, Germany
| | - Mathias Heikenwalder
- German Cancer Research Center (DKFZ), Division Chronic Inflammation and Cancer, 69120 Heidelberg, Germany; M3 Research Center, Medical Faculty Tübingen, Eberhard Karls University of Tübingen, 72074 Tübingen, Germany
| | - Michael Boutros
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg University, BioQuant & Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Institute for Human Genetics, Medical Faculty Heidelberg, 69120 Heidelberg, Germany.
| |
Collapse
|
15
|
Crossland NA, Beck S, Tan WY, Lo M, Mason JB, Zhang C, Guo W, Crott JW. Fecal microbiota transplanted from old mice promotes more colonic inflammation, proliferation, and tumor formation in azoxymethane-treated A/J mice than microbiota originating from young mice. Gut Microbes 2023; 15:2288187. [PMID: 38031252 PMCID: PMC10730208 DOI: 10.1080/19490976.2023.2288187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023] Open
Abstract
Aging is a strong risk factor for colorectal cancer (CRC). It is well established that gut microbial dysbiosis can play a role in the etiology of CRC. Although the composition of the gut microbial community changes with age and is reported to become more pro-inflammatory, it is unclear whether such changes are also pro-tumorigenic for the colon. To address this gap, we conducted fecal microbiota transplants (FMT) from young (DY, ~6 wk) and old (DO, ~72 wk) donor mice into young (8 wk) recipient mice that were pre-treated with antibiotics. After initiating tumorigenesis with azoxymethane, recipients were maintained for 19 wk during which time they received monthly FMT boosters. Compared to recipients of young donors (RY), recipients of old donors (RO) had an approximately 3-fold higher prevalence of histologically confirmed colon tumors (15.8 vs 50%, Chi2 P = .03), approximately 2-fold higher proliferating colonocytes as well as significantly elevated colonic IL-6, IL-1β and Tnf-α. Transcriptomics analysis of the colonic mucosa revealed a striking upregulation of mitochondria-related genes in the RO mice, a finding corroborated by increased mitochondrial abundance. Amongst the differences in fecal microbiome observed between DY and DO mice, the genera Ruminoclostridium, Lachnoclostridium and Marvinbryantia were more abundant in DY mice while the genera Bacteroides and Akkermansia were more abundant in DO mice. Amongst recipients, Ruminoclostridium and Lachnoclostridium were higher in RY mice while Bacteroides was higher in RO mice. Differences in fecal microbiota were observed between young and old mice, some of which persisted upon transplant into recipient mice. Recipients of old donors displayed significantly higher colonic proliferation, inflammation and tumor abundance compared to recipients of young donors. These findings support an etiological role for altered gut microbial communities in the increased risk for CRC with increasing age and establishes that such risk can be transmitted between individuals.
Collapse
Affiliation(s)
- Nicholas A. Crossland
- Department of Pathology and Laboratory Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, USA
- Comparative Pathology Laboratory, Boston University National Emerging Infectious Disease Laboratories, Boston, MA, USA
| | - Samuel Beck
- Department of Dermatology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
| | - Wei Yu Tan
- Comparative Pathology Laboratory, Boston University National Emerging Infectious Disease Laboratories, Boston, MA, USA
| | - Ming Lo
- Comparative Pathology Laboratory, Boston University National Emerging Infectious Disease Laboratories, Boston, MA, USA
| | - Joel B. Mason
- Vitamins and Carcinogenesis Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Chao Zhang
- Department of Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
| | - Weimin Guo
- Department of Pathology and Laboratory Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, USA
| | - Jimmy W. Crott
- Department of Pathology and Laboratory Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, USA
- Vitamins and Carcinogenesis Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| |
Collapse
|
16
|
Zhang Y, Wang X, Li W, Yang Y, Wu Z, Lyu Y, Yue C. Intestinal microbiota: a new perspective on delaying aging? Front Microbiol 2023; 14:1268142. [PMID: 38098677 PMCID: PMC10720643 DOI: 10.3389/fmicb.2023.1268142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/17/2023] [Indexed: 12/17/2023] Open
Abstract
The global aging situation is severe, and the medical pressures associated with aging issues should not be underestimated. The need and feasibility of studying aging and intervening in aging have been confirmed. Aging is a complex natural physiological progression, which involves the irreversible deterioration of body cells, tissues, and organs with age, leading to enhanced risk of disease and ultimately death. The intestinal microbiota has a significant role in sustaining host dynamic balance, and the study of bidirectional communication networks such as the brain-gut axis provides important directions for human disease research. Moreover, the intestinal microbiota is intimately linked to aging. This review describes the intestinal microbiota changes in human aging and analyzes the causal controversy between gut microbiota changes and aging, which are believed to be mutually causal, mutually reinforcing, and inextricably linked. Finally, from an anti-aging perspective, this study summarizes how to achieve delayed aging by targeting the intestinal microbiota. Accordingly, the study aims to provide guidance for further research on the intestinal microbiota and aging.
Collapse
Affiliation(s)
- Yuemeng Zhang
- Yan’an Key Laboratory of Microbial Drug Innovation and Transformation, School of Basic Medicine, Yan’an University, Yan’an, Shaanxi, China
| | - Xiaomei Wang
- Yan’an University of Physical Education, Yan’an University, Yan’an, Shaanxi, China
| | - Wujuan Li
- Yan’an Key Laboratory of Microbial Drug Innovation and Transformation, School of Basic Medicine, Yan’an University, Yan’an, Shaanxi, China
| | - Yi Yang
- Yan’an Key Laboratory of Microbial Drug Innovation and Transformation, School of Basic Medicine, Yan’an University, Yan’an, Shaanxi, China
| | - Zhuoxuan Wu
- Yan’an Key Laboratory of Microbial Drug Innovation and Transformation, School of Basic Medicine, Yan’an University, Yan’an, Shaanxi, China
| | - Yuhong Lyu
- Yan’an Key Laboratory of Microbial Drug Innovation and Transformation, School of Basic Medicine, Yan’an University, Yan’an, Shaanxi, China
| | - Changwu Yue
- Yan’an Key Laboratory of Microbial Drug Innovation and Transformation, School of Basic Medicine, Yan’an University, Yan’an, Shaanxi, China
| |
Collapse
|
17
|
Naito Y. Gut Frailty: Its Concept and Pathogenesis. Digestion 2023; 105:49-57. [PMID: 37967548 PMCID: PMC10777716 DOI: 10.1159/000534733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 10/18/2023] [Indexed: 11/17/2023]
Abstract
BACKGROUND There is still a considerable gap between average life expectancy and healthy life expectancy in Japan. Recent research has revealed that gut frailty may be a worsening factor for various diseases, a cause of chronic inflammation, and a precursor to frailty. SUMMARY Among self-reported symptoms, constipation is particularly significant as one of the key symptoms of gut frailty. Studies have demonstrated that individuals with constipation have significantly lower survival rates and are also at a higher risk of developing various diseases such as chronic kidney disease, cardiovascular diseases, and neurodegenerative disorders like Parkinson's disease. Various molecular mechanisms could contribute to gut frailty, and the decrease in mucus secretion is an extremely early-stage pathology. Dysbiosis of gut microbiota has a major impact on many conditions associated with gut frailty. Prebiotics, probiotics, post-biotics, and fecal microbiota transplantation are under investigation as a treatment option for gut frailty. KEY MESSAGE Although the concept of gut frailty has not yet gained widespread recognition, we hope to propose more practical screening methods, diagnostic approaches, and specific interventions in the future.
Collapse
Affiliation(s)
- Yuji Naito
- Human Immunology and Nutrition Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| |
Collapse
|
18
|
Gao WT, Liu JX, Wang DH, Sun HJ, Zhang XY. Melatonin reduced colon inflammation but had no effect on energy metabolism in ageing Mongolian gerbils (Meriones unguiculatus). Comp Biochem Physiol C Toxicol Pharmacol 2023; 273:109731. [PMID: 37611884 DOI: 10.1016/j.cbpc.2023.109731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/21/2023] [Accepted: 08/20/2023] [Indexed: 08/25/2023]
Abstract
In photoperiod-sensitive wild animals, the secretion of melatonin (MT) is modulated by external photoperiod, and MT affects inflammation and the ageing process. The beneficial effects of MT in delaying the progress of ageing have been reported in laboratory mice and rats. However, little is known about MT in wild mammals. In the current study, we investigated energy metabolism, microbial community structure and colon homeostasis in ageing Mongolian gerbils (Meriones unguiculatus) through exogenous supplementation of MT to test the hypothesis that MT has beneficial effects on gut homeostasis in ageing gerbils. Exogenous MT supplementation had no effect on energy metabolism in Mongolian gerbils but reduced the levels of circulating tumor necrosis factor-α (TNF-α), immune globulin G (IgG) and corticosterone (CORT). The increase in the level of inflammation in ageing animals was related to changes in the structure and diversity of the gut microbiota. At the genus level, the relative abundance of Prevotella, Treponema, Corynebacterium, and Sphingomonas was increased in ageing animals and decreased significantly by the treatment of MT. Christensenella and Lactobacillus were attenuated in ageing animals, and tended to be enhanced by MT treatment. Functions related to glycosphingolipid biosynthesis-ganglio series and lipopolysaccharide biosynthesis (metabolisms of cofactors, vitamins and glycan) were increased in ageing animals and decreased significantly by the treatment of MT. Our data suggest that a supplement of MT could improve colon homeostasis through changing the composition of gut microbiota and reducing inflammation in ageing gerbils.
Collapse
Affiliation(s)
- Wen-Ting Gao
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Science, Shandong Normal University, Jinan 250358, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin-Xiu Liu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Sciences, Shenyang Normal University, Shenyang 110034, China
| | - De-Hua Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Sciences, Shandong University, Qingdao 266237, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hai-Ji Sun
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Science, Shandong Normal University, Jinan 250358, China.
| | - Xue-Ying Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
19
|
Xu Z, Man SS, Gong BY, Li ZD, Zhou HF, Peng YF, Zhao SW, Hou YL, Wang L, Bian YH. Bazi Bushen maintains intestinal homeostasis through inhibiting TLR4/NFκB signaling pathway and regulating gut microbiota in SAMP6 mice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:7273-7283. [PMID: 37450639 DOI: 10.1002/jsfa.12812] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 06/23/2023] [Accepted: 07/14/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Bazi Bushen is a Chinese patented medicine with multiple health benefits and geroprotective effects, yet, no research has explored its effects on intestinal homeostasis. In this study, we aimed to investigate the effect of Bazi Bushen on intestinal inflammation and the potential mechanism of gut microbiota dysbiosis and intestinal homeostasis in senescence-accelerated mouse prone 6 (SAMP6). The hematoxylin and eosin (H&E) staining and immunohistochemistry were performed to assess the function of the intestinal mucosal barrier. The enzyme-linked immunosorbent assay (ELISA) and Western blotting were used to determine the level of intestinal inflammation. The aging-related β-galactosidase (SA-β-gal) staining and Western blotting were used to measure the extent of intestinal aging. The 16S ribosomal RNA (16S rRNA) was performed to analyze the change in gut microbiota composition and distribution. RESULTS Bazi Bushen exerted remarkable protective effects in SAMP6, showing a regulated mucosal barrier and increased barrier integrity. It also suppressed intestinal inflammation through down-regulating pro-inflammatory cytokines (IL-6, IL-1β, and TNF-α) and inhibiting TLR4/NFκB signaling pathway (MYD88, p-p65, and TLR4). Bazi Bushen improved intestinal aging by reducing the area of SA-β-gal-positive cells and the expression of senescence markers p16, p21, and p53. In addition, Bazi Bushen effectively rebuilt the gut microbiota ecosystem by decreasing the abundance of Bacteroides and Klebsiella, whiles increasing the ratio of Lactobacillus/Bacteroides and the abundance of Akkermansia. CONCLUSION Our study shows that Bazi Bushen could serve as a potential therapy for maintaining intestinal homeostasis. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Zhe Xu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shan-Shan Man
- Pharmaceutical Department, Tianjin Second People's Hospital, Tianjin, China
| | - Bo-Yang Gong
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhao-Dong Li
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hui-Fang Zhou
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yan-Fei Peng
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shu-Wu Zhao
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yun-Long Hou
- National Key Laboratory of Luobing Research and Innovative Chinese Medicine, Hebei, China
| | - Li Wang
- Pharmaceutical Department, Tianjin Second People's Hospital, Tianjin, China
| | - Yu-Hong Bian
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| |
Collapse
|
20
|
Gutierrez A, Pucket B, Engevik MA. Bifidobacterium and the intestinal mucus layer. MICROBIOME RESEARCH REPORTS 2023; 2:36. [PMID: 38045921 PMCID: PMC10688832 DOI: 10.20517/mrr.2023.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/21/2023] [Accepted: 09/13/2023] [Indexed: 12/05/2023]
Abstract
Bifidobacterium species are integral members of the human gut microbiota and these microbes have significant interactions with the intestinal mucus layer. This review delves into Bifidobacterium-mucus dynamics, shedding light on the multifaceted nature of this relationship. We cover conserved features of Bifidobacterium-mucus interactions, such as mucus adhesion and positive regulation of goblet cell and mucus production, as well as species and strain-specific attributes of mucus degradation. For each interface, we explore the molecular mechanisms underlying these interactions and their potential implications for human health. Notably, we emphasize the ability of Bifidobacterium species to positively influence the mucus layer, shedding light on its potential as a mucin-builder and a therapeutic agent for diseases associated with disrupted mucus barriers. By elucidating the complex interplay between Bifidobacterium and intestinal mucus, we aim to contribute to a deeper understanding of the gut microbiota-host interface and pave the way for novel therapeutic strategies.
Collapse
Affiliation(s)
- Alyssa Gutierrez
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Brenton Pucket
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Melinda A. Engevik
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Department of Microbiology & Immunology, Medical University of South Carolina, Charleston, SC 29425, USA
| |
Collapse
|
21
|
Yang Q, Lyu S, Xu M, Li S, Du Z, Liu X, Shang X, Yu Z, Liu J, Zhang T. Potential Benefits of Egg White Proteins and Their Derived Peptides in the Regulation of the Intestinal Barrier and Gut Microbiota: A Comprehensive Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:13168-13180. [PMID: 37639307 DOI: 10.1021/acs.jafc.3c03230] [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: 08/29/2023]
Abstract
Impaired intestinal barrier function can impede the digestion and absorption of nutrients and cause a range of metabolic disorders, which are the main causes of intestinal disease. Evidence suggests that proper dietary protein intake can prevent and alleviate intestinal diseases. Egg white protein (EWP) has received considerable attention, because of its high protein digestibility and rich amino acid composition. Furthermore, bioactive peptides may have an increased repair effect due to their high degradation efficiency in the gut. In this study, we aimed to review the effects of EWP and its bioactive peptides on intestinal structural repair. The potential modulation mechanisms by which EWP and their peptides regulate the gut microbiota and intestinal barrier can be summarized as follows: (1) restoring the structure of the intestinal barrier to its intact form, (2) enhancing the intestinal immune system and alleviating the inflammatory response and oxidative damage, and (3) increasing the relative abundance of beneficial bacteria and metabolites. Further in-depth analysis of the coregulation of multiple signaling pathways by EWP is required, and the combined effects of these multiple mechanisms requires further evaluation in experimental models. Human trials can be considered to understand new directions for development.
Collapse
Affiliation(s)
- Qi Yang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Siwen Lyu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Menglei Xu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Shengrao Li
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Zhiyang Du
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Xuanting Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Xiaomin Shang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Zhipeng Yu
- School of Food Science and Engineering, Hainan University, 570228 Haikou, China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| | - Ting Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food, Jilin University, 130062 Changchun, China
- College of Food Science and Engineering, Jilin University, 130062 Changchun, China
| |
Collapse
|
22
|
Poceviciute R, Bogatyrev SR, Romano AE, Dilmore AH, Mondragón-Palomino O, Takko H, Pradhan O, Ismagilov RF. Quantitative whole-tissue 3D imaging reveals bacteria in close association with mouse jejunum mucosa. NPJ Biofilms Microbiomes 2023; 9:64. [PMID: 37679412 PMCID: PMC10485000 DOI: 10.1038/s41522-023-00423-2] [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: 08/25/2022] [Accepted: 07/31/2023] [Indexed: 09/09/2023] Open
Abstract
Because the small intestine (SI) epithelium lacks a thick protective mucus layer, microbes that colonize the thin SI mucosa may exert a substantial effect on the host. For example, bacterial colonization of the human SI may contribute to environmental enteropathy dysfunction (EED) in malnourished children. Thus far, potential bacterial colonization of the mucosal surface of the SI has only been documented in disease states, suggesting mucosal colonization is rare, likely requiring multiple perturbations. Furthermore, conclusive proof of bacterial colonization of the SI mucosal surface is challenging, and the three-dimensional (3D) spatial structure of mucosal colonies remains unknown. Here, we tested whether we could induce dense bacterial association with jejunum mucosa by subjecting mice to a combination of malnutrition and oral co-gavage with a bacterial cocktail (E. coli and Bacteroides spp.) known to induce EED. To visualize these events, we optimized our previously developed whole-tissue 3D imaging tools with third-generation hybridization chain reaction (HCR v3.0) probes. Only in mice that were malnourished and gavaged with the bacterial cocktail did we detect dense bacterial clusters surrounding intestinal villi suggestive of colonization. Furthermore, in these mice we detected villus loss, which may represent one possible consequence that bacterial colonization of the SI mucosa has on the host. Our results suggest that dense bacterial colonization of jejunum mucosa is possible in the presence of multiple perturbations and that whole-tissue 3D imaging tools can enable the study of these rare events.
Collapse
Affiliation(s)
- Roberta Poceviciute
- Division of Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Said R Bogatyrev
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- Medically Associated Science and Technology Program, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Anna E Romano
- Division of Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Amanda H Dilmore
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- Biomedical Sciences Program, University of California San Diego, San Diego, CA, USA
| | - Octavio Mondragón-Palomino
- Division of Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Heli Takko
- Division of Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
- Department of Physics, University of Helsinki, Helsinki, Finland
| | - Ojas Pradhan
- Division of Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Rustem F Ismagilov
- Division of Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA, USA.
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
| |
Collapse
|
23
|
Zhang Z, Tian X, Lu JY, Boit K, Ablaeva J, Zakusilo FT, Emmrich S, Firsanov D, Rydkina E, Biashad SA, Lu Q, Tyshkovskiy A, Gladyshev VN, Horvath S, Seluanov A, Gorbunova V. Increased hyaluronan by naked mole-rat Has2 improves healthspan in mice. Nature 2023; 621:196-205. [PMID: 37612507 PMCID: PMC10666664 DOI: 10.1038/s41586-023-06463-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 07/20/2023] [Indexed: 08/25/2023]
Abstract
Abundant high-molecular-mass hyaluronic acid (HMM-HA) contributes to cancer resistance and possibly to the longevity of the longest-lived rodent-the naked mole-rat1,2. To study whether the benefits of HMM-HA could be transferred to other animal species, we generated a transgenic mouse overexpressing naked mole-rat hyaluronic acid synthase 2 gene (nmrHas2). nmrHas2 mice showed an increase in hyaluronan levels in several tissues, and a lower incidence of spontaneous and induced cancer, extended lifespan and improved healthspan. The transcriptome signature of nmrHas2 mice shifted towards that of longer-lived species. The most notable change observed in nmrHas2 mice was attenuated inflammation across multiple tissues. HMM-HA reduced inflammation through several pathways, including a direct immunoregulatory effect on immune cells, protection from oxidative stress and improved gut barrier function during ageing. These beneficial effects were conferred by HMM-HA and were not specific to the nmrHas2 gene. These findings demonstrate that the longevity mechanism that evolved in the naked mole-rat can be exported to other species, and open new paths for using HMM-HA to improve lifespan and healthspan.
Collapse
Affiliation(s)
- Zhihui Zhang
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Xiao Tian
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - J Yuyang Lu
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Kathryn Boit
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Julia Ablaeva
- Department of Biology, University of Rochester, Rochester, NY, USA
| | | | - Stephan Emmrich
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Denis Firsanov
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Elena Rydkina
- Department of Biology, University of Rochester, Rochester, NY, USA
| | | | - Quan Lu
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Alexander Tyshkovskiy
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow, Russia
| | - Vadim N Gladyshev
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Steve Horvath
- Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA, USA
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Andrei Seluanov
- Department of Biology, University of Rochester, Rochester, NY, USA.
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA.
| | - Vera Gorbunova
- Department of Biology, University of Rochester, Rochester, NY, USA.
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA.
| |
Collapse
|
24
|
Shemtov SJ, Emani R, Bielska O, Covarrubias AJ, Verdin E, Andersen JK, Winer DA. The intestinal immune system and gut barrier function in obesity and ageing. FEBS J 2023; 290:4163-4186. [PMID: 35727858 PMCID: PMC9768107 DOI: 10.1111/febs.16558] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 04/29/2022] [Accepted: 06/20/2022] [Indexed: 08/13/2023]
Abstract
Obesity and ageing predispose to numerous, yet overlapping chronic diseases. For example, metabolic abnormalities, including insulin resistance (IR) and type 2 diabetes (T2D) are important causes of morbidity and mortality. Low-grade chronic inflammation of tissues, such as the liver, visceral adipose tissue and neurological tissues, is considered a significant contributor to these chronic diseases. Thus, it is becoming increasingly important to understand what drives this inflammation in affected tissues. Recent evidence, especially in the context of obesity, suggests that the intestine plays an important role as the gatekeeper of inflammatory stimuli that ultimately fuels low-grade chronic tissue inflammation. In addition to metabolic diseases, abnormalities in the intestinal mucosal barrier have been linked to a range of other chronic inflammatory conditions, such as neurodegeneration and ageing. The flow of inflammatory stimuli from the gut is in part controlled by local immunological inputs impacting the intestinal barrier. Here, we will review the impact of obesity and ageing on the intestinal immune system and its downstream consequences on gut barrier function, which is strongly implicated in the pathogenesis of obesity and age-related diseases. In particular, we will discuss the effects of age-related intestinal dysfunction on neurodegenerative diseases.
Collapse
Affiliation(s)
- Sarah J. Shemtov
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Rohini Emani
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Olga Bielska
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Anthony J. Covarrubias
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, 90095 USA
| | - Eric Verdin
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Julie K. Andersen
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Daniel A. Winer
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
- Division of Cellular & Molecular Biology, Diabetes Research Group, Toronto General Research Institute (TGRI), University Health Network, 101 College Street, Toronto, ON, M5G 1L7, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King’s College Circle, Toronto, ON, M5S 1A8, Canada
- Department of Immunology, University of Toronto, 1 King’s College Circle, Toronto, ON, M5S 1A8, Canada
| |
Collapse
|
25
|
Meng G, Monaghan TM, Duggal NA, Tighe P, Peerani F. Microbial-Immune Crosstalk in Elderly-Onset Inflammatory Bowel Disease: Unchartered Territory. J Crohns Colitis 2023; 17:1309-1325. [PMID: 36806917 DOI: 10.1093/ecco-jcc/jjad025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Indexed: 02/23/2023]
Abstract
Elderly-onset inflammatory bowel disease [IBD] patients exhibit a distinct natural history compared to younger IBD patients, with unique disease phenotypes, differential responses to therapy, and increased surgical morbidity and mortality. Despite the foreseeable high demand for personalized medicine and specialized IBD care in the elderly, current paradigms of IBD management fail to capture the required nuances of care for elderly-onset IBD patients. Our review postulates the roles of systemic and mucosal immunosenescence, inflammageing and a dysbiotic microbial ecosystem in the pathophysiology of elderly-onset IBD. Ultimately, a better understanding of elderly-onset IBD can lead to improved patient outcomes and the tailoring of future preventative and treatment strategies.
Collapse
Affiliation(s)
- Guanmin Meng
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Tanya M Monaghan
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Niharika A Duggal
- MRC-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Paddy Tighe
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Farhad Peerani
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
26
|
Tanwar H, Gnanasekaran JM, Allison D, Chuang LS, He X, Aimetti M, Baima G, Costalonga M, Cross RK, Sears C, Mehandru S, Cho J, Colombel JF, Raufman JP, Thumbigere-Math V. Unraveling the Link between Periodontitis and Inflammatory Bowel Disease: Challenges and Outlook. ARXIV 2023:arXiv:2308.10907v1. [PMID: 37645044 PMCID: PMC10462160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Periodontitis and Inflammatory Bowel Disease (IBD) are chronic inflammatory conditions, characterized by microbial dysbiosis and hyper-immunoinflammatory responses. Growing evidence suggest an interconnection between periodontitis and IBD, implying a shift from the traditional concept of independent diseases to a complex, reciprocal cycle. This review outlines the evidence supporting an "Oral-Gut" axis, marked by a higher prevalence of periodontitis in IBD patients and vice versa. The specific mechanisms linking periodontitis and IBD remain to be fully elucidated, but emerging evidence points to the ectopic colonization of the gut by oral bacteria, which promote intestinal inflammation by activating host immune responses. This review presents an in-depth examination of the interconnection between periodontitis and IBD, highlighting the shared microbiological and immunological pathways, and proposing a "multi-hit" hypothesis in the pathogenesis of periodontitis-mediated intestinal inflammation. Furthermore, the review underscores the critical need for a collaborative approach between dentists and gastroenterologists to provide holistic oral-systemic healthcare.
Collapse
Affiliation(s)
- Himanshi Tanwar
- Division of Periodontology, University of Maryland School of Dentistry, Baltimore, MD, USA
| | | | - Devon Allison
- Division of Periodontology, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Ling-shiang Chuang
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xuesong He
- Department of Microbiology, The Forsyth Institute, Cambridge, MA, USA
| | - Mario Aimetti
- Department of Surgical Sciences, C.I.R. Dental School, University of Turin, Turin, Italy
| | - Giacomo Baima
- Department of Surgical Sciences, C.I.R. Dental School, University of Turin, Turin, Italy
| | - Massimo Costalonga
- Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, USA
| | - Raymond K. Cross
- Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Cynthia Sears
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Saurabh Mehandru
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Judy Cho
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jean-Frederic Colombel
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jean-Pierre Raufman
- Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vivek Thumbigere-Math
- Division of Periodontology, University of Maryland School of Dentistry, Baltimore, MD, USA
- National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD, USA
| |
Collapse
|
27
|
Foster J, Mckenna ZJ, Atkins WC, Jarrard CP, Crandall CG. Aging Increases Enterocyte Damage during a 3-Hour Exposure to Very Hot and Dry Heat: A Preliminary Study. BIOLOGY 2023; 12:1088. [PMID: 37626974 PMCID: PMC10451985 DOI: 10.3390/biology12081088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023]
Abstract
Profound heat stress can damage the gastrointestinal barrier, leading to microbial translocation from the gut and subsequent systemic inflammation. Despite the greater vulnerability of older people to heat wave-related morbidity and mortality, it is unknown if age modulates gastrointestinal barrier damage and inflammation during heat stress. Therefore, the aim of this study was to determine if aging impacted enterocyte damage and systemic inflammatory responses to a 3-h exposure to very hot and dry (47 °C, 15% humidity) heat with accompanying activities of daily living (intermittent activity at 3 METS). Data from 16 young (age 21 to 39 years) and 16 older (age 65 to 76 years) humans were used to address this aim. In each group, log-transformed plasma concentrations of intestinal fatty acid binding protein (I-FABPlog), interleukin-8 (IL-8log), and tissue factor (TFlog) were assessed as indices of enterocyte damage, systemic inflammation, and blood coagulation, respectively, before and after the 3-h heat exposure. In the younger cohort, I-FABPlog concentration did not increase from pre to post heat exposure (p = 0.264, d = 0.20), although it was elevated in the older group (p = 0.014, d = 0.67). The magnitude of the increase in I-FABPlog was greater in the older participants (p = 0.084, d = 0.55). Across all participants, there was no correlation between the change in core temperature and the change in IFABPlog. There was no change in IL-8log in the younger group (p = 0.193, d = 0.23) following heat exposure, but we observed a decrease in IL-8log in the older group (p = 0.047, d = 0.48). TFlog decreased in the younger group (p = 0.071, d = 0.41), but did not change in the older group (p = 0.193, d = 0.15). Our data indicate that I-FABPlog concentration (an index of enterocyte damage) is increased in older humans during a 3-h extreme heat exposure. Future studies should determine whether this marker reflects increased gastrointestinal barrier permeability in older individuals during heat exposure.
Collapse
Affiliation(s)
- Josh Foster
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, The University of Texas Southwestern Medical Center, Dallas, TX 75231, USA; (Z.J.M.); (W.C.A.); (C.P.J.); (C.G.C.)
- Centre for Human and Applied Physiological Sciences, Faculty of Life Sciences and Medicine, King’s College London, London SE1 1UL, UK
| | - Zachary J. Mckenna
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, The University of Texas Southwestern Medical Center, Dallas, TX 75231, USA; (Z.J.M.); (W.C.A.); (C.P.J.); (C.G.C.)
| | - Whitley C. Atkins
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, The University of Texas Southwestern Medical Center, Dallas, TX 75231, USA; (Z.J.M.); (W.C.A.); (C.P.J.); (C.G.C.)
| | - Caitlin P. Jarrard
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, The University of Texas Southwestern Medical Center, Dallas, TX 75231, USA; (Z.J.M.); (W.C.A.); (C.P.J.); (C.G.C.)
| | - Craig G. Crandall
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, The University of Texas Southwestern Medical Center, Dallas, TX 75231, USA; (Z.J.M.); (W.C.A.); (C.P.J.); (C.G.C.)
| |
Collapse
|
28
|
Hoedt EC, Hueston CM, Cash N, Bongers RS, Keane JM, van Limpt K, Ben Amor K, Knol J, MacSharry J, van Sinderen D. A synbiotic mixture of selected oligosaccharides and bifidobacteria assists murine gut microbiota restoration following antibiotic challenge. MICROBIOME 2023; 11:168. [PMID: 37528457 PMCID: PMC10394833 DOI: 10.1186/s40168-023-01595-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 06/09/2023] [Indexed: 08/03/2023]
Abstract
BACKGROUND Typically, animal models studying gastrointestinal microbiotas compromised in early life have employed either germ-free animals or mice treated with a cocktail of antibiotics. Such studies intend to mimic scenarios of infants born by caesarean section and/or subjected to antibiotic treatment. However, the antibiotics used in these studies are rarely prescribed to infants. Therefore, an early life model was developed in which the murine gastrointestinal microbiota was severely disrupted by clindamycin treatment. RESULTS In this mouse model, we investigated the extent supplementation with a synbiotic mixture of prebiotics, being scGOS/lcFOS with the human milk oligosaccharide 2'-Fucosyllactose (2'-FL), in combination with or without single strain or mix of "infant type" bifidobacteria, can rescue an antibiotic-compromised microbiota. Shotgun metagenomic sequencing showed that the microbiota was severely disrupted by the clindamycin challenge. No recovery was observed 3 weeks post-challenge in the scGOS/lcFOS/2'FL group, while the group that received the synbiotic treatment of scGOS/lcFOS/2'-FL with Bifidobacterium breve NRBB01 showed partial recovery. Strikingly in the scGOS/lcFOS/2'-FL group receiving the mixture of bifidobacteria resulted in a recovery of the microbiota disruption. Histological analyses showed that the clindamycin-treated animals at the end of the experiment still suffered from mild oedema and villi/colonic crypt irregularities which was ameliorated by the synbiotic intervention. CONCLUSION Our study demonstrates that supplementation of synbiotic mixture of scGOS/lcFOS/2'-FL in combination with a specific mix of infant-type bifidobacterial strains is able to partially revive an antibiotic-perturbed gastrointestinal microbiota. Video Abstract.
Collapse
Affiliation(s)
- Emily C Hoedt
- APC Microbiome Ireland, University College Cork, Western Road, Cork, Ireland
- Current address: NHMRC CRE in Digestive Health, HMRI, Newcastle, NSW, Australia
| | - Cara M Hueston
- APC Microbiome Ireland, University College Cork, Western Road, Cork, Ireland
| | - Nora Cash
- APC Microbiome Ireland, University College Cork, Western Road, Cork, Ireland
| | | | - Jonathan M Keane
- APC Microbiome Ireland, University College Cork, Western Road, Cork, Ireland
| | | | | | - Jan Knol
- Danone Nutricia Research, Utrecht, The Netherlands
- Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands
| | - John MacSharry
- APC Microbiome Ireland, University College Cork, Western Road, Cork, Ireland.
- School of Microbiology, University College Cork, Western Road, Cork, Ireland.
- School of Medicine, University College Cork, Cork, Ireland.
| | - Douwe van Sinderen
- APC Microbiome Ireland, University College Cork, Western Road, Cork, Ireland.
- School of Microbiology, University College Cork, Western Road, Cork, Ireland.
| |
Collapse
|
29
|
Gao H, Wang K, Suarez JA, Jin Z, Rocha KCE, Zhang D, Farrell A, Truong T, Tekin Y, Tan B, Jung HS, Kempf J, Mahata SK, Dillmann WH, Suarez J, Ying W. Gut lumen-leaked microbial DNA causes myocardial inflammation and impairs cardiac contractility in ageing mouse heart. Front Immunol 2023; 14:1216344. [PMID: 37520546 PMCID: PMC10373503 DOI: 10.3389/fimmu.2023.1216344] [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: 05/03/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Emerging evidence indicates the critical roles of microbiota in mediating host cardiac functions in ageing, however, the mechanisms underlying the communications between microbiota and cardiac cells during the ageing process have not been fully elucidated. Bacterial DNA was enriched in the cardiomyocytes of both ageing humans and mice. Antibiotic treatment remarkably reduced bacterial DNA abundance in ageing mice. Gut microbial DNA containing extracellular vesicles (mEVs) were readily leaked into the bloodstream and infiltrated into cardiomyocytes in ageing mice, causing cardiac microbial DNA enrichment. Vsig4+ macrophages efficiently block the spread of gut mEVs whereas Vsig4+ cell population was greatly decreased in ageing mice. Gut mEV treatment resulted in cardiac inflammation and a reduction in cardiac contractility in young Vsig4-/- mice. Microbial DNA depletion attenuated the pathogenic effects of gut mEVs. cGAS/STING signaling is critical for the effects of microbial DNA. Restoring Vsig4+ macrophage population in ageing WT mice reduced cardiac microbial DNA abundance and inflammation and improved heart contractility.
Collapse
Affiliation(s)
- Hong Gao
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Ke Wang
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Jorge A. Suarez
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Zhongmou Jin
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Karina Cunha e Rocha
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Dinghong Zhang
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Andrea Farrell
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Tyler Truong
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Yasemin Tekin
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Breanna Tan
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Hyun Suh Jung
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Julia Kempf
- Division of Biological Sciences, University of California San Diego, San Diego, CA, United States
| | - Sushil K. Mahata
- the Veterans Affairs San Diego Healthcare System, San Diego, CA, United States
- Division of Nephrology and Hypertension, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Wolfgang H. Dillmann
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Jorge Suarez
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - Wei Ying
- Division of Endocrinology and Metabolism, Department of Medicine, University of California San Diego, San Diego, CA, United States
| |
Collapse
|
30
|
Johansen J, Atarashi K, Arai Y, Hirose N, Sørensen SJ, Vatanen T, Knip M, Honda K, Xavier RJ, Rasmussen S, Plichta DR. Centenarians have a diverse gut virome with the potential to modulate metabolism and promote healthy lifespan. Nat Microbiol 2023; 8:1064-1078. [PMID: 37188814 DOI: 10.1038/s41564-023-01370-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 03/23/2023] [Indexed: 05/17/2023]
Abstract
Distinct gut microbiome ecology may be implicated in the prevention of aging-related diseases as it influences systemic immune function and resistance to infections. Yet, the viral component of the microbiome throughout different stages in life remains unexplored. Here we present a characterization of the centenarian gut virome using previously published metagenomes from 195 individuals from Japan and Sardinia. Compared with gut viromes of younger adults (>18 yr) and older individuals (>60 yr), centenarians had a more diverse virome including previously undescribed viral genera, such as viruses associated with Clostridia. A population shift towards higher lytic activity was also observed. Finally, we investigated phage-encoded auxiliary functions that influence bacterial physiology, which revealed an enrichment of genes supporting key steps in sulfate metabolic pathways. Phage and bacterial members of the centenarian microbiome displayed an increased potential for converting methionine to homocysteine, sulfate to sulfide and taurine to sulfide. A greater metabolic output of microbial hydrogen sulfide in centenarians may in turn support mucosal integrity and resistance to pathobionts.
Collapse
Affiliation(s)
- Joachim Johansen
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Koji Atarashi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Yasumichi Arai
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - Nobuyoshi Hirose
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - Søren J Sørensen
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Tommi Vatanen
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Mikael Knip
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- New Children's Hospital, Helsinki University Hospital, Helsinki, Finland
- Tampere Center for Child Health Research, Tampere University Hospital, Tampere, Finland
| | - Kenya Honda
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Ramnik J Xavier
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
| | - Simon Rasmussen
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- The Novo Nordisk Foundation Center for Genomic Mechanisms of Disease, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
| | - Damian R Plichta
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
| |
Collapse
|
31
|
Khatoon S, Kalam N, Rashid S, Bano G. Effects of gut microbiota on neurodegenerative diseases. Front Aging Neurosci 2023; 15:1145241. [PMID: 37323141 PMCID: PMC10268008 DOI: 10.3389/fnagi.2023.1145241] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 04/12/2023] [Indexed: 06/17/2023] Open
Abstract
A progressive degradation of the brain's structure and function, which results in a reduction in cognitive and motor skills, characterizes neurodegenerative diseases (NDs) such as Alzheimer's disease (AD), Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS), and Huntington's disease (HD). The morbidity linked to NDs is growing, which poses a severe threat to human being's mental and physical ability to live well. The gut-brain axis (GBA) is now known to have a crucial role in the emergence of NDs. The gut microbiota is a conduit for the GBA, a two-way communication system between the gut and the brain. The myriad microorganisms that make up the gut microbiota can affect brain physiology by transmitting numerous microbial chemicals from the gut to the brain via the GBA or neurological system. The synthesis of neurotransmitters, the immunological response, and the metabolism of lipids and glucose have all been demonstrated to be impacted by alterations in the gut microbiota, such as an imbalance of helpful and harmful bacteria. In order to develop innovative interventions and clinical therapies for NDs, it is crucial to comprehend the participation of the gut microbiota in these conditions. In addition to using antibiotics and other drugs to target particular bacterial species that may be a factor in NDs, this also includes using probiotics and other fecal microbiota transplantation to maintain a healthy gut microbiota. In conclusion, the examination of the GBA can aid in understanding the etiology and development of NDs, which may benefit the improvement of clinical treatments for these disorders and ND interventions. This review indicates existing knowledge about the involvement of microbiota present in the gut in NDs and potential treatment options.
Collapse
Affiliation(s)
- Saima Khatoon
- Department of Medical Elementology and Toxicology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Nida Kalam
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Summya Rashid
- Department of Pharmacology and Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Gulnaz Bano
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| |
Collapse
|
32
|
Salazar J, Durán P, Díaz MP, Chacín M, Santeliz R, Mengual E, Gutiérrez E, León X, Díaz A, Bernal M, Escalona D, Hernández LAP, Bermúdez V. Exploring the Relationship between the Gut Microbiota and Ageing: A Possible Age Modulator. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20105845. [PMID: 37239571 DOI: 10.3390/ijerph20105845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/20/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023]
Abstract
The gut microbiota (GM) has been the subject of intense research in recent years. Therefore, numerous factors affecting its composition have been thoroughly examined, and with them, their function and role in the individual's systems. The gut microbiota's taxonomical composition dramatically impacts older adults' health status. In this regard, it could either extend their life expectancy via the modulation of metabolic processes and the immune system or, in the case of dysbiosis, predispose them to age-related diseases, including bowel inflammatory and musculoskeletal diseases and metabolic and neurological disorders. In general, the microbiome of the elderly tends to present taxonomic and functional changes, which can function as a target to modulate the microbiota and improve the health of this population. The GM of centenarians is unique, with the faculty-promoting metabolic pathways capable of preventing and counteracting the different processes associated with age-related diseases. The molecular mechanisms by which the microbiota can exhibit anti-ageing properties are mainly based on anti-inflammatory and antioxidant actions. This review focuses on analysing the current knowledge of gut microbiota characteristics and modifiers, its relationship with ageing, and the GM-modulating approaches to increase life expectancy.
Collapse
Affiliation(s)
- Juan Salazar
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - Pablo Durán
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - María P Díaz
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - Maricarmen Chacín
- Centro de Investigaciones en Ciencias de la Vida, Universidad Simón Bolívar, Barranquilla 080002, Colombia
- Sociedad Internacional de Rejuvenecimiento Facial No Quirúrgico (SIRF), Barranquilla 080002, Colombia
| | - Raquel Santeliz
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - Edgardo Mengual
- Biological Research Institute "Doctors Orlando Castejon and Haydee V Castejon", Faculty of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - Emma Gutiérrez
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - Xavier León
- Instituto Ecuatoriano de Seguridad Social, Cuenca 010101, Ecuador
| | - Andrea Díaz
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | - Marycarlota Bernal
- Facultad de Ingenierias, Universidad Simón Bolívar, Cúcuta 540001, Colombia
| | - Daniel Escalona
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4001, Venezuela
| | | | - Valmore Bermúdez
- Centro de Investigaciones en Ciencias de la Vida, Universidad Simón Bolívar, Barranquilla 080002, Colombia
| |
Collapse
|
33
|
Sabit H, Kassab A, Alaa D, Mohamed S, Abdel-Ghany S, Mansy M, Said OA, Khalifa MA, Hafiz H, Abushady AM. The Effect of Probiotic Supplementation on the Gut-Brain Axis in Psychiatric Patients. Curr Issues Mol Biol 2023; 45:4080-4099. [PMID: 37232729 DOI: 10.3390/cimb45050260] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/27/2023] [Accepted: 04/04/2023] [Indexed: 05/27/2023] Open
Abstract
The pathophysiology of several psychiatric diseases may entail disturbances in the hypothalamic-pituitary-adrenal (HPA) axis and metabolic pathways. Variations in how these effects present themselves may be connected to individual variances in clinical symptoms and treatment responses, such as the observation that a significant fraction of participants do not respond to current antipsychotic drugs. A bidirectional signaling pathway between the central nervous system and the gastrointestinal tract is known as the microbiota-gut-brain axis. The large and small intestines contain more than 100 trillion microbial cells, contributing to the intestinal ecosystem's incredible complexity. Interactions between the microbiota and intestinal epithelium can alter brain physiology and affect mood and behavior. There has recently been a focus on how these relationships impact mental health. According to evidence, intestinal microbiota may play a role in neurological and mental illnesses. Intestinal metabolites of microbial origin, such as short-chain fatty acids, tryptophan metabolites, and bacterial components that might stimulate the host's immune system, are mentioned in this review. We aim to shed some on the growing role of gut microbiota in inducing/manipulating several psychiatric disorders, which may pave the way for novel microbiota-based therapies.
Collapse
Affiliation(s)
- Hussein Sabit
- Department of Medical Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza P.O. Box 77, Egypt
| | - Areej Kassab
- Department of Medical Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza P.O. Box 77, Egypt
| | - Donia Alaa
- Department of Medical Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza P.O. Box 77, Egypt
| | - Shaza Mohamed
- Department of Medical Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza P.O. Box 77, Egypt
| | - Shaimaa Abdel-Ghany
- Department of Environmental Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza P.O. Box 77, Egypt
| | - Mohamed Mansy
- Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
| | - Osama A Said
- Department of Agricultural Biotechnology, College of Biotechnology, Misr University for Science and Technology, Giza P.O. Box 77, Egypt
| | - Mona A Khalifa
- Faculty of Art and Science, Samtah, Jazan University, Jazan 45142, Saudi Arabia
| | - Halah Hafiz
- Clinical Nutrition Department, Factually of Applied Medical Science, Umm Alqura University, Mecca 24382, Saudi Arabia
| | - Asmaa M Abushady
- School of Biotechnology, Nile University, Giza 41516, Egypt
- Genetic Department, Faculty of Agriculture, Ain Shams University, Cairo 11566, Egypt
| |
Collapse
|
34
|
Sang X, Wang Q, Ning Y, Wang H, Zhang R, Li Y, Fang B, Lv C, Zhang Y, Wang X, Ren F. Age-Related Mucus Barrier Dysfunction in Mice Is Related to the Changes in Muc2 Mucin in the Colon. Nutrients 2023; 15:nu15081830. [PMID: 37111049 PMCID: PMC10145456 DOI: 10.3390/nu15081830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/07/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
During aging, the protective function of mucus barrier is significantly reduced among which changes in colonic mucus barrier function received the most attention. Additionally, the incidence of colon-related diseases increases significantly in adulthood, posing a threat to the health of the elderly. However, the specific changes in colonic mucus barrier with aging and the underlying mechanisms have not been fully elucidated. To understand the effects of aging on the colonic mucus barrier, changes in the colonic mucus layer were evaluated in mice aged 2, 12, 18, and 24 months. Microbial invasion, thickness, and structure of colonic mucus in mice at different months of age were analyzed by in situ hybridization fluorescence staining, AB/PAS staining, and cryo-scanning electron microscopy. Results showed that the aged colon exhibited intestinal mucus barrier dys-function and altered mucus properties. During aging, microorganisms invaded the mucus layer to reach epithelial cells. Compared with young mice, the thickness of mucus layer in aged mice in-creased by 11.66 μm. And the contents of the main components and glycosylation structure of colon changed. Among them, the proportion of goblet cells decreased significantly in older mice, and the expression of spdef genes that regulate goblet cell differentiation decreased. Further, the expression of key enzymes involved in mucin core structure formation and glycan modification also changed with aging. The expression of core 1 β1,3-galactosyltransferase (C1GalT1) which is the key enzyme forming the main core structure increased by one time, while core 2 β1,6 N-acetylglucosaminyltransferase (C2GnT) and core 3 β1,3 N-acetylglucosaminyltransferase (C3GnT) decreased 2 to 6- and 2-fold, respectively. Also, the expression of sialyltransferase, one of the mucin-glycan modifying enzymes, was decreased by 1-fold. Overall, our results indicate that the goblet cells/glycosyltransferase/O-glycan axis plays an important role in maintaining the physicochemical properties of colonic mucus and the stability of intestinal environment.
Collapse
Affiliation(s)
- Xueqin Sang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Qingyu Wang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing 100730, China
| | - Yueyan Ning
- State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100083, China
| | - Huihui Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Rui Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Yixuan Li
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China
| | - Bing Fang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China
| | - Cong Lv
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China
| | - Yan Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiaoyu Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
- Key Laboratory of Functional Dairy, Co-Constructed by Ministry of Education and Beijing Municipality, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Fazheng Ren
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China
- Food Laboratory of Zhongyuan, Luohe 462000, China
| |
Collapse
|
35
|
Ma J, Liu Z, Gao X, Bao Y, Hong Y, He X, Zhu W, Li Y, Huang W, Zheng N, Sheng L, Zhou B, Chen H, Li H. Gut microbiota remodeling improves natural aging-related disorders through Akkermansia muciniphila and its derived acetic acid. Pharmacol Res 2023; 189:106687. [PMID: 36746362 DOI: 10.1016/j.phrs.2023.106687] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/05/2023]
Abstract
Accumulating evidence indicates gut microbiota contributes to aging-related disorders. However, the exact mechanism underlying gut dysbiosis-related pathophysiological changes during aging remains largely unclear. In the current study, we first performed gut microbiota remodeling on old mice by fecal microbiota transplantation (FMT) from young mice, and then characterized the bacteria signature that was specifically altered by FMT. Our results revealed that FMT significantly improved natural aging-related systemic disorders, particularly exerted hepatoprotective effects, and improved glucose sensitivity, hepatosplenomegaly, inflammaging, antioxidative capacity and intestinal barrier. Moreover, FMT particularly increased the abundance of fecal A.muciniphila, which was almost nondetectable in old mice. Interestingly, A.muciniphila supplementation also exerted similar benefits with FMT on old mice. Notably, targeted metabolomics on short chain fatty acids (SCFAs) revealed that only acetic acid was consistently reversed by FMT. Then, acetic acid intervention exerted beneficial actions on both Caenorhabditis elegans and natural aging mice. In conclusion, our current study demonstrated that gut microbiota remodeling improved natural aging-related disorders through A.muciniphila and its derived acetic acid, suggesting that interventions with potent stimulative capacity on A. muciniphila growth and production of acetic acid was alternative and effective way to maintain healthy aging. DATA AVAILABILITY STATEMENT: The data of RNAseq and 16 S rRNA gene sequencing can be accessed in NCBI with the accession number PRJNA848996 and PRJNA849355.
Collapse
Affiliation(s)
- Junli Ma
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zekun Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xinxin Gao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yiyang Bao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ying Hong
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xiaofang He
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Weize Zhu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yan Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wenjin Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ningning Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Lili Sheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ben Zhou
- Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Hongzhuan Chen
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Department of Pharmacology and Chemical Biology, School of Medicine, Shanghai Jiao Tong University, 200025, China.
| | - Houkai Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| |
Collapse
|
36
|
Rahman Z, Dandekar MP. Implication of Paraprobiotics in Age-Associated Gut Dysbiosis and Neurodegenerative Diseases. Neuromolecular Med 2023; 25:14-26. [PMID: 35879588 DOI: 10.1007/s12017-022-08722-1] [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: 03/31/2022] [Accepted: 07/13/2022] [Indexed: 10/16/2022]
Abstract
Neurodegenerative diseases, including Alzheimer's and Parkinson's disease, are major age-related concerns in elderly people. Since no drug fully addresses the progression of neurodegenerative diseases, advance treatment strategies are urgently needed. Several studies have noted the senescence of immune system and the perturbation of gut microbiota in the aged population. In recent years, the role of gut microbiota has been increasingly studied in the manifestation of age-related CNS disorders. In this context, prebiotics, probiotics, and paraprobiotics are reported to improve the behavioural and neurobiological abnormalities in elderly patients. As live microbiota, prescribed in the form of probiotics, shows some adverse effects like sepsis, translocation, and horizontal gene transfer, paraprobiotics could be a possible alternative strategy in designing microbiome-based therapeutics. This review describes the health-beneficial effects of paraprobiotics in age-associated neurodegenerative diseases.
Collapse
Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India.
| |
Collapse
|
37
|
Van Epps P, Canaday DH. The Intersection of Age and Infections: Understanding the Impacts from Diagnosis to Management. Infect Dis Clin North Am 2023; 37:xi-xiii. [PMID: 36805017 DOI: 10.1016/j.idc.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
| | - David H Canaday
- 10900 Euclid Avenue, BRB 1025, Cleveland, OH 44106-4984, USA.
| |
Collapse
|
38
|
Jian H, Liu Y, Wang X, Dong X, Zou X. Akkermansia muciniphila as a Next-Generation Probiotic in Modulating Human Metabolic Homeostasis and Disease Progression: A Role Mediated by Gut-Liver-Brain Axes? Int J Mol Sci 2023; 24:ijms24043900. [PMID: 36835309 PMCID: PMC9959343 DOI: 10.3390/ijms24043900] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/09/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023] Open
Abstract
Appreciation of the importance of Akkermansia muciniphila is growing, and it is becoming increasingly relevant to identify preventive and/or therapeutic solutions targeting gut-liver-brain axes for multiple diseases via Akkermansia muciniphila. In recent years, Akkermansia muciniphila and its components such as outer membrane proteins and extracellular vesicles have been known to ameliorate host metabolic health and intestinal homeostasis. However, the impacts of Akkermansia muciniphila on host health and disease are complex, as both potentially beneficial and adverse effects are mediated by Akkermansia muciniphila and its derivatives, and in some cases, these effects are dependent upon the host physiology microenvironment and the forms, genotypes, and strain sources of Akkermansia muciniphila. Therefore, this review aims to summarize the current knowledge of how Akkermansia muciniphila interacts with the host and influences host metabolic homeostasis and disease progression. Details of Akkermansia muciniphila will be discussed including its biological and genetic characteristics; biological functions including anti-obesity, anti-diabetes, anti-metabolic-syndrome, anti-inflammation, anti-aging, anti-neurodegenerative disease, and anti-cancer therapy functions; and strategies to elevate its abundance. Key events will be referred to in some specific disease states, and this knowledge should facilitate the identification of Akkermansia muciniphila-based probiotic therapy targeting multiple diseases via gut-liver-brain axes.
Collapse
|
39
|
Zhao Q, Yu J, Hao Y, Zhou H, Hu Y, Zhang C, Zheng H, Wang X, Zeng F, Hu J, Gu L, Wang Z, Zhao F, Yue C, Zhou P, Zhang H, Huang N, Wu W, Zhou Y, Li J. Akkermansia muciniphila plays critical roles in host health. Crit Rev Microbiol 2023; 49:82-100. [PMID: 35603929 DOI: 10.1080/1040841x.2022.2037506] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Akkermansia muciniphila, an intestinal microorganism, belongs to Verrucomicrobia, one of the most abundant microorganisms in the mammalian gut. It is a mucin-degrading bacterium that can colonise intestines of mammals such as humans and mice by utilising mucin as the only nitrogen and carbon source. When A. muciniphila colonises the intestine, its metabolites interact with the intestinal barrier, affecting host health by consolidating the intestinal barrier, regulating metabolic functions of the intestinal and circulatory systems, and regulating immune functions. This review summarised the mechanisms of A. muciniphila-host interactions that are relevant to host health. We focussed on characteristics of A. muciniphila in relation to its metabolites to provide a comprehensive understanding of A. muciniphila and its effects on host health and disease processes.
Collapse
Affiliation(s)
- Qixiang Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Jiadong Yu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yan Hao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Hong Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yawen Hu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Chen Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Huaping Zheng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Xiaoyan Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Fanlian Zeng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Jing Hu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Linna Gu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Zhen Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Fulei Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Chengcheng Yue
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Pei Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Haozhou Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Nongyu Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Wenling Wu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yifan Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Jiong Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, China
| |
Collapse
|
40
|
Microbiota-immune-brain interactions: A lifespan perspective. Curr Opin Neurobiol 2023; 78:102652. [PMID: 36463579 DOI: 10.1016/j.conb.2022.102652] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/10/2022] [Accepted: 10/31/2022] [Indexed: 12/03/2022]
Abstract
There is growing appreciation of key roles of the gut microbiota in maintaining homeostasis and influencing brain and behaviour at critical windows across the lifespan. Mounting evidence suggests that communication between the gut and the brain could be the key to understanding multiple neuropsychiatric disorders, with the immune system coming to the forefront as an important mechanistic mediator. Throughout the lifespan, the immune system exchanges continuous reciprocal signals with the central nervous system. Intestinal microbial cues alter immune mediators with consequences for host neurophysiology and behaviour. Several factors challenge the gut microbiota composition, which in response release molecules with neuro- and immuno-active potential that are crucial for adequate neuro-immune interactions. In this review, multiple factors contributing to the upkeep of the fine balance between health and disease of these systems are discussed, and we elucidate the potential mechanistic implications for the gut microbiota inputs on host brain and behaviour across the lifespan.
Collapse
|
41
|
Paez HG, Pitzer CR, Alway SE. Age-Related Dysfunction in Proteostasis and Cellular Quality Control in the Development of Sarcopenia. Cells 2023; 12:cells12020249. [PMID: 36672183 PMCID: PMC9856405 DOI: 10.3390/cells12020249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Sarcopenia is a debilitating skeletal muscle disease that accelerates in the last decades of life and is characterized by marked deficits in muscle strength, mass, quality, and metabolic health. The multifactorial causes of sarcopenia have proven difficult to treat and involve a complex interplay between environmental factors and intrinsic age-associated changes. It is generally accepted that sarcopenia results in a progressive loss of skeletal muscle function that exceeds the loss of mass, indicating that while loss of muscle mass is important, loss of muscle quality is the primary defect with advanced age. Furthermore, preclinical models have suggested that aged skeletal muscle exhibits defects in cellular quality control such as the degradation of damaged mitochondria. Recent evidence suggests that a dysregulation of proteostasis, an important regulator of cellular quality control, is a significant contributor to the aging-associated declines in muscle quality, function, and mass. Although skeletal muscle mammalian target of rapamycin complex 1 (mTORC1) plays a critical role in cellular control, including skeletal muscle hypertrophy, paradoxically, sustained activation of mTORC1 recapitulates several characteristics of sarcopenia. Pharmaceutical inhibition of mTORC1 as well as caloric restriction significantly improves muscle quality in aged animals, however, the mechanisms controlling cellular proteostasis are not fully known. This information is important for developing effective therapeutic strategies that mitigate or prevent sarcopenia and associated disability. This review identifies recent and historical understanding of the molecular mechanisms of proteostasis driving age-associated muscle loss and suggests potential therapeutic interventions to slow or prevent sarcopenia.
Collapse
Affiliation(s)
- Hector G. Paez
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Christopher R. Pitzer
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Stephen E. Alway
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- The Tennessee Institute of Regenerative Medicine, Memphis, TN 38163, USA
- Correspondence:
| |
Collapse
|
42
|
Almeida HM, Sardeli AV, Conway J, Duggal NA, Cavaglieri CR. Comparison between frail and non-frail older adults' gut microbiota: A systematic review and meta-analysis. Ageing Res Rev 2022; 82:101773. [PMID: 36349647 DOI: 10.1016/j.arr.2022.101773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/28/2022] [Accepted: 10/28/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Emerging evidence suggests that the intestinal microbiota (IM) undergoes remodelling as we age, and this impacts the ageing trajectory and mortality in older adults. The aim was to investigate IM diversity differences between frail and non-frail older adults by meta-analysing previous studies. METHODS The protocol of this systematic review with meta-analysis was registered on PROSPERO (CRD42021276733). We searched for studies comparing IM diversity of frail and non-frail older adults indexed on PubMed, Embase, Cochrane, and Web of Science in November 2021. RESULTS We included 11 studies with 1239 participants, of which 340 were meta-analysed. Frailty was defined by a variety of criteria (i.e. Fried Scale, European Consensus on Sarcopenia). There were no differences in the meta-analyses between the frail and non-frail groups for species richness index (SMD = -0.147; 95% CI = -0.394, 0.100; p = 0.243) and species diversity index (SMD = -0.033; 95% CI = -0.315, 0.250; p = 0.820). However, we identified almost 50 differences between frail and non-frail within the relative abundance of bacteria phyla, families, genera, and species in the primary studies. CONCLUSIONS The evidence to prove that there are differences between frail and non-frail IM diversity by meta-analysis is still lacking. The present results suggest that further investigation into the role of specific bacteria, their function, and their influence on the physiopathology of frailty is needed.
Collapse
Affiliation(s)
- Helena Maia Almeida
- Gerontology Program - Faculty of Medical Sciences, UNICAMP, Campinas, SP, Brazil; Laboratory of Exercise Physiology (FISEX), University of Campinas, Campinas, Brazil
| | - Amanda V Sardeli
- Gerontology Program - Faculty of Medical Sciences, UNICAMP, Campinas, SP, Brazil; Laboratory of Exercise Physiology (FISEX), University of Campinas, Campinas, Brazil; Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.
| | - Jessica Conway
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | | | - Cláudia Regina Cavaglieri
- Gerontology Program - Faculty of Medical Sciences, UNICAMP, Campinas, SP, Brazil; Laboratory of Exercise Physiology (FISEX), University of Campinas, Campinas, Brazil
| |
Collapse
|
43
|
Gustafsson JK, Johansson MEV. The role of goblet cells and mucus in intestinal homeostasis. Nat Rev Gastroenterol Hepatol 2022; 19:785-803. [PMID: 36097076 DOI: 10.1038/s41575-022-00675-x] [Citation(s) in RCA: 105] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/04/2022] [Indexed: 12/08/2022]
Abstract
The intestinal tract faces numerous challenges that require several layers of defence. The tight epithelium forms a physical barrier that is further protected by a mucus layer, which provides various site-specific protective functions. Mucus is produced by goblet cells, and as a result of single-cell RNA sequencing identifying novel goblet cell subpopulations, our understanding of their various contributions to intestinal homeostasis has improved. Goblet cells not only produce mucus but also are intimately linked to the immune system. Mucus and goblet cell development is tightly regulated during early life and synchronized with microbial colonization. Dysregulation of the developing mucus systems and goblet cells has been associated with infectious and inflammatory conditions and predisposition to chronic disease later in life. Dysfunctional mucus and altered goblet cell profiles are associated with inflammatory conditions in which some mucus system impairments precede inflammation, indicating a role in pathogenesis. In this Review, we present an overview of the current understanding of the role of goblet cells and the mucus layer in maintaining intestinal health during steady-state and how alterations to these systems contribute to inflammatory and infectious disease.
Collapse
Affiliation(s)
- Jenny K Gustafsson
- Department of Physiology, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
| | - Malin E V Johansson
- Department of Medical Biochemisty and Cell biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden.
| |
Collapse
|
44
|
Zheng H, Zhang C, Wang Q, Feng S, Fang Y, Zhang S. The impact of aging on intestinal mucosal immune function and clinical applications. Front Immunol 2022; 13:1029948. [PMID: 36524122 PMCID: PMC9745321 DOI: 10.3389/fimmu.2022.1029948] [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: 08/28/2022] [Accepted: 11/09/2022] [Indexed: 12/03/2022] Open
Abstract
Immune cells and immune molecules in the intestinal mucosa participate in innate and adaptive immunity to maintain local and systematic homeostasis. With aging, intestinal mucosal immune dysfunction will promote the emergence of age-associated diseases. Although there have been a number of studies on the impact of aging on systemic immunity, relatively fewer studies have been conducted on the impact of aging on the intestinal mucosal immune system. In this review, we will briefly introduce the impact of aging on the intestinal mucosal barrier, the impact of aging on intestinal immune cells as well as immune molecules, and the process of interaction between intestinal mucosal immunity and gut microbiota during aging. After that we will discuss potential strategies to slow down intestinal aging in the elderly.
Collapse
Affiliation(s)
- Han Zheng
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chi Zhang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qianqian Wang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shuyan Feng
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yi Fang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shuo Zhang
- The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China,*Correspondence: Shuo Zhang,
| |
Collapse
|
45
|
Impairments of intestinal arginine and NO metabolisms trigger aging-associated intestinal barrier dysfunction and 'inflammaging'. Redox Biol 2022; 58:102528. [PMID: 36356464 PMCID: PMC9649383 DOI: 10.1016/j.redox.2022.102528] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
Aging is considered a state of low grade inflammation, occurring in the absence of any overt infection often referred to as 'inflammaging'. Maintaining intestinal homeostasis may be a target to extend a healthier status in older adults. Here, we report that even in healthy older men low grade bacterial endotoxemia is prevalent. In addition, employing multiple mouse models, we also show that while intestinal microbiota composition changes significantly during aging, fecal microbiota transplantation to old mice does not protect against aging-associated intestinal barrier dysfunction in small intestine. Rather, intestinal NO homeostasis and arginine metabolism mediated through arginase and NO synthesis is altered in small intestine of aging mice. Treatment with the arginase inhibitor norNOHA prevented aging-associated intestinal barrier dysfunction, low grade endotoxemia and delayed the onset of senescence in peripheral tissue e.g., liver. Intestinal arginine and NO metabolisms could be a target in the prevention of aging-associated intestinal barrier dysfunction and subsequently decline and 'inflammaging'.
Collapse
|
46
|
Ackerley CG, Smith SA, Murray PM, Amancha PK, Arthur RA, Zhu Z, Chahroudi A, Amara RR, Hu YJ, Kelley CF. The rectal mucosal immune environment and HIV susceptibility among young men who have sex with men. Front Immunol 2022; 13:972170. [PMID: 36341414 PMCID: PMC9631201 DOI: 10.3389/fimmu.2022.972170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/07/2022] [Indexed: 12/03/2022] Open
Abstract
Young men who have sex with men (YMSM) represent a particularly high-risk group for HIV acquisition in the US, despite similarly reported rates of sexual activity as older, adult MSM (AMSM). Increased rates of HIV infection among YMSM compared to AMSM could be partially attributable to differences within the rectal mucosal (RM) immune environment associated with earlier sexual debut and less lifetime exposure to receptive anal intercourse. Using an ex vivo explant HIV challenge model, we found that rectal tissues from YMSM supported higher levels of p24 at peak viral replication timepoints compared to AMSM. Among YMSM, the RM was characterized by increased CD4+ T cell proliferation, as well as lower frequencies of tissue resident CD8+ T cells and pro-inflammatory cytokine producing CD4+ and CD8+ T cells. In addition, the microbiome composition of YMSM was enriched for anaerobic taxa that have previously been associated with HIV acquisition risk, including Prevotella, Peptostreptococcus, and Peptoniphilus. These distinct immunologic and microbiome characteristics were found to be associated with higher HIV replication following ex vivo challenge of rectal explants, suggesting the RM microenvironment of YMSM may be uniquely conducive to HIV infection.
Collapse
Affiliation(s)
- Cassie G. Ackerley
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- *Correspondence: Cassie G. Ackerley,
| | - S. Abigail Smith
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| | - Phillip M. Murray
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| | - Praveen K. Amancha
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| | - Robert A. Arthur
- Emory Integrated Computational Core, Emory University, Atlanta, GA, United States
| | - Zhengyi Zhu
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Ann Chahroudi
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Emory National Primate Research Center, Emory University, Atlanta, GA, United States
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University, Atlanta, GA, United States
| | - Rama R. Amara
- Emory National Primate Research Center, Emory University, Atlanta, GA, United States
- Department of Microbiology and Immunology, Emory University, Atlanta, GA, United States
| | - Yi-Juan Hu
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Colleen F. Kelley
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| |
Collapse
|
47
|
Pluta R, Jabłoński M, Januszewski S, Czuczwar SJ. Crosstalk between the aging intestinal microflora and the brain in ischemic stroke. Front Aging Neurosci 2022; 14:998049. [PMID: 36275012 PMCID: PMC9582537 DOI: 10.3389/fnagi.2022.998049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/22/2022] [Indexed: 11/28/2022] Open
Abstract
Aging is an inevitable phenomenon experienced by animals and humans, and its intensity varies from one individual to another. Aging has been identified as a risk factor for neurodegenerative disorders by influencing the composition of the gut microbiota, microglia activity and cognitive performance. The microbiota-gut-brain axis is a two-way communication path between the gut microbes and the host brain. The aging intestinal microbiota communicates with the brain through secreted metabolites (neurotransmitters), and this phenomenon leads to the destruction of neuronal cells. Numerous external factors, such as living conditions and internal factors related to the age of the host, affect the condition of the intestinal microflora in the form of dysbiosis. Dysbiosis is defined as changes in the composition and function of the gut microflora that affect the pathogenesis, progress, and response to treatment of a disease entity. Dysbiosis occurs when changes in the composition and function of the microbiota exceed the ability of the microflora and its host to restore equilibrium. Dysbiosis leading to dysfunction of the microbiota-gut-brain axis regulates the development and functioning of the host’s nervous, immune, and metabolic systems. Dysbiosis, which causes disturbances in the microbiota-gut-brain axis, is seen with age and with the onset of stroke, and is closely related to the development of risk factors for stroke. The review presents and summarizes the basic elements of the microbiota-gut-brain axis to better understand age-related changes in signaling along the microbiota-gut-brain axis and its dysfunction after stroke. We focused on the relationship between the microbiota-gut-brain axis and aging, emphasizing that all elements of the microbiota-gut-brain axis are subject to age-related changes. We also discuss the interaction between microbiota, microglia and neurons in the aged individuals in the brain after ischemic stroke. Finally, we presented preclinical and clinical studies on the role of the aged microbiota-gut-brain axis in the development of risk factors for stroke and changes in the post-stroke microflora.
Collapse
Affiliation(s)
- Ryszard Pluta
- Laboratory of Ischemic and Neurodegenerative Brain Research, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
- *Correspondence: Ryszard Pluta,
| | - Mirosław Jabłoński
- Department of Rehabilitation and Orthopedics, Medical University of Lublin, Lublin, Poland
| | - Sławomir Januszewski
- Laboratory of Ischemic and Neurodegenerative Brain Research, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | | |
Collapse
|
48
|
Larson PJ, Zhou W, Santiago A, Driscoll S, Fleming E, Voigt AY, Chun OK, Grady JJ, Kuchel GA, Robison JT, Oh J. Associations of the skin, oral and gut microbiome with aging, frailty and infection risk reservoirs in older adults. NATURE AGING 2022; 2:941-955. [PMID: 36398033 PMCID: PMC9667708 DOI: 10.1038/s43587-022-00287-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/30/2022] [Indexed: 01/25/2023]
Abstract
Older adults represent a vulnerable population with elevated risk for numerous morbidities. To explore the association of the microbiome with aging and age-related susceptibilities including frailty and infectious disease risk, we conducted a longitudinal study of the skin, oral, and gut microbiota in 47 community- or skilled nursing facility-dwelling older adults vs. younger adults. We found that microbiome changes were not associated with chronological age so much as frailty: we identified prominent changes in microbiome features associated with susceptibility to pathogen colonization and disease risk, including diversity, stability, heterogeneity, and biogeographic determinism, which were moreover associated with a loss of Cutibacterium (C.) acnes in the skin microbiome. Strikingly, the skin microbiota were also the primary reservoir for antimicrobial resistance, clinically important pathobionts, and nosocomial strains, suggesting a potential role particularly for the skin microbiome in disease risk and dissemination of multidrug resistant pathogens.
Collapse
Affiliation(s)
- Peter J. Larson
- UCONN Health (University of Connecticut), Farmington, CT
- The Jackson Laboratory, Farmington, CT
| | - Wei Zhou
- The Jackson Laboratory, Farmington, CT
| | - Alba Santiago
- UCONN Health (University of Connecticut), Farmington, CT
| | - Sarah Driscoll
- UCONN Health (University of Connecticut), Farmington, CT
| | | | | | | | - James J. Grady
- UCONN Health (University of Connecticut), Farmington, CT
| | | | | | - Julia Oh
- The Jackson Laboratory, Farmington, CT
| |
Collapse
|
49
|
Wilmanski T, Gibbons SM, Price ND. Healthy aging and the human gut microbiome: why we cannot just turn back the clock. NATURE AGING 2022; 2:869-871. [PMID: 37118282 PMCID: PMC10155257 DOI: 10.1038/s43587-022-00294-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Affiliation(s)
| | - Sean M Gibbons
- Institute for Systems Biology, Seattle, WA, USA.
- Department of Bioengineering, University of Washington, Seattle, WA, USA.
- eScience Institute, University of Washington, Seattle, WA, USA.
| | - Nathan D Price
- Institute for Systems Biology, Seattle, WA, USA.
- Department of Bioengineering, University of Washington, Seattle, WA, USA.
- Thorne HealthTech, New York, NY, USA.
| |
Collapse
|
50
|
Duangnumsawang Y, Zentek J, Vahjen W, Tarradas J, Goodarzi Boroojeni F. Alterations in bacterial metabolites, cytokines, and mucosal integrity in the caecum of broilers caused by feed additives and host-related factors. Front Physiol 2022; 13:935870. [PMID: 36171972 PMCID: PMC9512067 DOI: 10.3389/fphys.2022.935870] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/13/2022] [Indexed: 11/29/2022] Open
Abstract
A total of 2,880 one-day-old male and female broiler chicks from two breeds, Ross308 and Cobb500 were randomly assigned to 72 pens. Broilers were offered three diets: a wheat-soybean diet without (CO), or with either a probiotic (probiotic; 2.4 x 109 CFU/kg diet of Bacillus subtilis DSM32324 and DSM32325 and B. amyloliquefaciens DSM25840) or a phytobiotic (phytobiotic; grape extract with 165 ppm procyanidin and 585 ppm polyphenol) product. The trial was conducted with a 3 × 2 × 2 factorial arrangement of diet, breed and sex in a completely randomized design and consisted of 6 replicate-pens per treatment (40 birds per pen). At day 7, 21, and 35, one chicken per pen was slaughtered for caecal sampling to quantify bacterial metabolites (digesta) as well as evaluate mRNA abundance and histomorphology (tissue). Data were subjected to ANOVA using GLM procedure to evaluate age, diet, breed and sex and their interactions. Spearman’s correlation (r) was analyzed between metabolite concentration and mRNA abundance. Overall, the concentration of short chain fatty acids increased with age, while lactate decreased from day 7 to 21 (p < 0.05). The mRNA abundance of IL-2, IL-4, IL-6, IL-8, IL-10, IL-12, IL-17α, IL-18, IFN-γ and TGF-β2 increased with age but IL-1β and TNF-α increased in abundance from day 7 to 21 and then decreased (p < 0.05). Abundance of MUC2 and CLDN5 increased after day 21 (p < 0.05). Caecal crypt depth increased with age (p < 0.05). Acidic goblet cell (GC) number peaked at day 21 (p < 0.05), while mixed GC number was not affected by age. A few impacts of breed, diet and interactions on the investigated variables showed no meaningful biological pattern. Propionate positively correlated with all cytokines investigated (r = 0.150–0.548), except TNF-α. Lactate negatively correlated with pro-inflammatory cytokines like IL-1β (r = −0.324). Aging affected caecal histomorphology, bacterial activity and genes responsible for barrier integrity and inflammatory response. This effect could be attributed to the interaction between gut microbiota and immune system as well as the direct effect of metabolites on gut histomorphology and cytokine mRNA abundance.
Collapse
Affiliation(s)
- Yada Duangnumsawang
- Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- Faculty of Veterinary Science, Prince of Songkla University, Hatyai, Songkhla, Thailand
| | - Jürgen Zentek
- Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Wilfried Vahjen
- Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Joan Tarradas
- Animal nutrition, Institute of Agrifood Research and Technology IRTA, Constantí, Spain
| | - Farshad Goodarzi Boroojeni
- Institute of Animal Nutrition, Department of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
- *Correspondence: Farshad Goodarzi Boroojeni,
| |
Collapse
|