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Chen W, Chen X, Yao L, Feng J, Li F, Shan Y, Ren L, Zhuo C, Feng M, Zhong S, He C. A global view of altered ligand-receptor interactions in bone marrow aging based on single-cell sequencing. Comput Struct Biotechnol J 2024; 23:2754-2762. [PMID: 39050783 PMCID: PMC11267010 DOI: 10.1016/j.csbj.2024.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/27/2024] Open
Abstract
Altered cell-cell communication is a hallmark of aging, but its impact on bone marrow aging remains poorly understood. Based on a common and effective pipeline and single-cell transcriptome sequencing, we detected 384,124 interactions including 2575 ligand-receptor pairs and 16 non-adherent bone marrow cell types in old and young mouse and identified a total of 5560 significantly different interactions, which were then verified by flow cytometry and quantitative real-time PCR. These differential ligand-receptor interactions exhibited enrichment for the senescence-associated secretory phenotypes. Further validation demonstrated supplementing specific extracellular ligands could modify the senescent signs of hematopoietic stem cells derived from old mouse. Our work provides an effective procedure to detect the ligand-receptor interactions based on single-cell sequencing, which contributes to understand mechanisms and provides a potential strategy for intervention of bone marrow aging.
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Affiliation(s)
- Wenbo Chen
- School of Basic Medical Sciences, Taikang Medical School, Wuhan University, Wuhan 430071, China
| | - Xin Chen
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Lei Yao
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Jing Feng
- School of Computer Science, Wuhan University, Wuhan 430072, China
| | - Fengyue Li
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuxin Shan
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Linli Ren
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Chenjian Zhuo
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Mingqian Feng
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
| | - Shan Zhong
- School of Basic Medical Sciences, Taikang Medical School, Wuhan University, Wuhan 430071, China
| | - Chunjiang He
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
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Koga HK, Grodstein F, Williams DR, Demeo DL, Kubzansky LD. Relations of optimism and purpose in life to immune markers in aging. J Psychosom Res 2024; 184:111851. [PMID: 38964200 DOI: 10.1016/j.jpsychores.2024.111851] [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: 01/11/2024] [Revised: 06/13/2024] [Accepted: 06/21/2024] [Indexed: 07/06/2024]
Abstract
OBJECTIVE Optimism and purpose in life are associated with improved health outcomes. More information is needed on biological mechanisms, including immunosenescence. We investigated if psychological well-being is associated with healthier immunosenescence-related measures including naïve and terminally differentiated CD4+ and CD8+ T cell percentages, CD4+:CD8+, and cytomegalovirus (CMV) IgG response. METHODS Participants were adults over age 50 from the Health and Retirement Study. Optimism was measured using the Life Orientation Test Revised. Purpose in life was assessed using the subscale from the Ryff psychological well-being measure. We examined the cross-sectional associations of optimism and purpose in life with measures of T cell subsets using linear regression and with CMV IgG using ordered logit regression, controlling for potential confounding factors. RESULTS The final analytic sample ranged from 7250 to 7870. After adjusting for sociodemographic factors, a 1-SD increment in optimism was associated with the percentage of naïve CD4+ T cells increasing by 0.6 (95%CI 0.2%, 1.0%). A 1-SD increment in purpose in life was associated with the percentage of naïve CD4+ T cells increasing by 0.9 (95%CI 0.5%, 1.3%) after adjusting for sociodemographic factors and the association was maintained after further adjustments for health conditions, depression, and health behaviors. For naïve CD8+ T cell percentages, CD4:CD8 ratios, and CMV IgG antibodies, associations were seen only in models that adjusted for age. No significant associations were seen in any models for the terminally differentiated CD4+ and CD8+ T cells. CONCLUSIONS We found associations of optimism and purpose in life with naïve CD4+ T cell percentages.
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Affiliation(s)
- Hayami K Koga
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, United States of America; Harvard Center for Population and Development Studies, Cambridge, MA, United States of America.
| | - Francine Grodstein
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, United States of America
| | - David R Williams
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, United States of America; Department of African and African American Studies, Department of Sociology, Harvard University, Cambridge, MA, United States of America
| | - Dawn L Demeo
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America; Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, United States of America
| | - Laura D Kubzansky
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, United States of America
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3
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Li N, Li Y, Yu T, Gou M, Chen W, Wang X, Tong J, Chen S, Tan S, Wang Z, Tian B, Li CSR, Tan Y. Immunosenescence-related T cell phenotypes and white matter in schizophrenia patients with tardive dyskinesia. Schizophr Res 2024; 269:36-47. [PMID: 38723519 DOI: 10.1016/j.schres.2024.04.017] [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: 10/19/2023] [Revised: 03/18/2024] [Accepted: 04/22/2024] [Indexed: 06/17/2024]
Abstract
Schizophrenia patients with tardive dyskinesia (TD) are associated with accelerated biological aging, immunological dysfunction, and premature morbidity and mortality. Older individuals are particularly vulnerable to TD development. As a characteristic of immunosenescence, alterations in the relative proportions of naïve or memory T cell subpopulations may be negatively or positively associated with brain structure abnormalities; however, whether these changes are correlated with TD remains unclear. In this study, we investigated correlations between distributions of T cell phenotypes and brain structure abnormalities (especially white matter) in schizophrenia patients with (TD) and without (NTD) TD (n = 50 and 58, respectively) relative to healthy controls (HC, n = 41). Immune markers, including naïve (CD45RA+), memory (CD45RO+), and apoptotic (CD95+) CD4+ and CD8+ T cells, were examined by flow cytometry, as were the intracellular levels of cytokines (interferon (IFN)-γ, interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α) in CD8 + CD45RA + CD95+ and CD8 + CD45RO + CD95+ T cells. MRI was employed to evaluate the fractional anisotropy (FA) of white matter tracts and subcortical volumes, following published routines. The percentage of CD8 + CD45RO + CD95+ T cells was higher in TD compared with NTD and HC groups and correlated with the choroid plexus volume in TD group. The intracellular level of IFN-γ in CD8 + CD45RO + CD95+ T cells, the FA of the fornix/stria terminalis, and the pallidum volume were correlated with orofacial TD, whereas the FAs of the inferior fronto-occipital fasciculus, cingulum, and superior longitudinal fasciculus were correlated with limb-truncal TD. These findings provide preliminary evidence that the association between immunosenescence-related T cell subpopulations and brain structure may underline the pathological process of TD.
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Affiliation(s)
- Na Li
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Yanli Li
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Ting Yu
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Mengzhuang Gou
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Wenjin Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Xiaoying Wang
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Jinghui Tong
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Song Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Shuping Tan
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Zhiren Wang
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Baopeng Tian
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China
| | - Chiang-Shan R Li
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Yunlong Tan
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, PR China.
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Müller L, Di Benedetto S. Inflammaging, immunosenescence, and cardiovascular aging: insights into long COVID implications. Front Cardiovasc Med 2024; 11:1384996. [PMID: 38988667 PMCID: PMC11233824 DOI: 10.3389/fcvm.2024.1384996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 06/14/2024] [Indexed: 07/12/2024] Open
Abstract
Aging leads to physiological changes, including inflammaging-a chronic low-grade inflammatory state with significant implications for various physiological systems, particularly for cardiovascular health. Concurrently, immunosenescence-the age-related decline in immune function, exacerbates vulnerabilities to cardiovascular pathologies in older individuals. Examining the dynamic connections between immunosenescence, inflammation, and cardiovascular aging, this mini-review aims to disentangle some of these interactions for a better understanding of their complex interplay. In the context of cardiovascular aging, the chronic inflammatory state associated with inflammaging compromises vascular integrity and function, contributing to atherosclerosis, endothelial dysfunction, arterial stiffening, and hypertension. The aging immune system's decline amplifies oxidative stress, fostering an environment conducive to atherosclerotic plaque formation. Noteworthy inflammatory markers, such as the high-sensitivity C-reactive protein, interleukin-6, interleukin-1β, interleukin-18, and tumor necrosis factor-alpha emerge as key players in cardiovascular aging, triggering inflammatory signaling pathways and intensifying inflammaging and immunosenescence. In this review we aim to explore the molecular and cellular mechanisms underlying inflammaging and immunosenescence, shedding light on their nuanced contributions to cardiovascular diseases. Furthermore, we explore the reciprocal relationship between immunosenescence and inflammaging, revealing a self-reinforcing cycle that intensifies cardiovascular risks. This understanding opens avenues for potential therapeutic targets to break this cycle and mitigate cardiovascular dysfunction in aging individuals. Furthermore, we address the implications of Long COVID, introducing an additional layer of complexity to the relationship between aging, immunosenescence, inflammaging, and cardiovascular health. Our review aims to stimulate continued exploration and advance our understanding within the realm of aging and cardiovascular health.
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Affiliation(s)
- Ludmila Müller
- Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany
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5
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Hambright WS, Duke VR, Goff AD, Goff AW, Minas LT, Kloser H, Gao X, Huard C, Guo P, Lu A, Mitchell J, Mullen M, Su C, Tchkonia T, Espindola Netto JM, Robbins PD, Niedernhofer LJ, Kirkland JL, Bahney CS, Philippon M, Huard J. Clinical validation of C 12FDG as a marker associated with senescence and osteoarthritic phenotypes. Aging Cell 2024; 23:e14113. [PMID: 38708778 PMCID: PMC11113632 DOI: 10.1111/acel.14113] [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: 05/01/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 05/07/2024] Open
Abstract
Chronic conditions associated with aging have proven difficult to prevent or treat. Senescence is a cell fate defined by loss of proliferative capacity and the development of a pro-inflammatory senescence-associated secretory phenotype comprised of cytokines/chemokines, proteases, and other factors that promotes age-related diseases. Specifically, an increase in senescent peripheral blood mononuclear cells (PBMCs), including T cells, is associated with conditions like frailty, rheumatoid arthritis, and bone loss. However, it is unknown if the percentage of senescent PBMCs associated with age-associated orthopedic decline could be used for potential diagnostic or prognostic use in orthopedics. Here, we report senescent cell detection using the fluorescent compound C12FDG to quantify PBMCs senescence across a large cohort of healthy and osteoarthritic patients. There is an increase in the percent of circulating C12FDG+ PBMCs that is commensurate with increases in age and senescence-related serum biomarkers. Interestingly, C12FDG+ PBMCs and T cells also were found to be elevated in patients with mild to moderate osteoarthritis, a progressive joint disease that is strongly associated with inflammation. The percent of C12FDG+ PBMCs and age-related serum biomarkers were decreased in a small subgroup of study participants taking the senolytic drug fisetin. These results demonstrate quantifiable measurements in a large group of participants that could create a composite score of healthy aging sensitive enough to detect changes following senolytic therapy and may predict age-related orthopedic decline. Detection of peripheral senescence in PBMCs and subsets using C12FDG may be clinically useful for quantifying cellular senescence and determining how and if it plays a pathological role in osteoarthritic progression.
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Affiliation(s)
- William S. Hambright
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Victoria R. Duke
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Adam D. Goff
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Alex W. Goff
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Lucas T. Minas
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Heidi Kloser
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Xueqin Gao
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Charles Huard
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Ping Guo
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Aiping Lu
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - John Mitchell
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Michael Mullen
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Charles Su
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
| | - Tamara Tchkonia
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
| | | | - Paul D. Robbins
- Department of Biochemistry and Molecular Biology and Biophysics, Institute on the Biology of Aging and MetabolismUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Laura J. Niedernhofer
- Department of Biochemistry and Molecular Biology and Biophysics, Institute on the Biology of Aging and MetabolismUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - James L. Kirkland
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
- Division of General Internal Medicine, Department of MedicineMayo ClinicRochesterMinnesotaUSA
| | - Chelsea S. Bahney
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
- Orthopaedic Trauma InstituteUniversity of California San FranciscoSan FranciscoCaliforniaUSA
| | - Marc Philippon
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
- The Steadman ClinicVailColoradoUSA
| | - Johnny Huard
- Center for Regenerative Sports MedicineSteadman Philippon Research InstituteVailColoradoUSA
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Müller L, Di Benedetto S. Aging brain: exploring the interplay between bone marrow aging, immunosenescence, and neuroinflammation. Front Immunol 2024; 15:1393324. [PMID: 38638424 PMCID: PMC11024322 DOI: 10.3389/fimmu.2024.1393324] [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: 02/28/2024] [Accepted: 03/25/2024] [Indexed: 04/20/2024] Open
Abstract
Aging is a complex process characterized by a myriad of physiological changes, including alterations in the immune system termed immunosenescence. It exerts profound effects on both the bone marrow and the central nervous system, with significant implications for immunosenescence in neurological contexts. Our mini-review explores the complex relationship between bone marrow aging and its impact on immunosenescence, specifically within the context of neurological diseases. The bone marrow serves as a crucial hub for hematopoiesis and immune cell production, yet with age, it undergoes significant alterations, including alterations in hematopoietic stem cell function, niche composition, and inflammatory signaling. These age-related shifts in the bone marrow microenvironment contribute to dysregulation of immune cell homeostasis and function, impacting neuroinflammatory processes and neuronal health. In our review, we aim to explore the complex cellular and molecular mechanisms that link bone marrow aging to immunosenescence, inflammaging, and neuroinflammation, with a specific focus on their relevance to the pathophysiology of age-related neurological disorders. By exploring this interplay, we strive to provide a comprehensive understanding of how bone marrow aging impacts immune function and contributes to the progression of neurological diseases in aging individuals. Ultimately, this knowledge can hold substantial promise for the development of innovative therapeutic interventions aimed at preserving immune function and mitigating the progression of neurological disorders in the elderly population.
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Affiliation(s)
- Ludmila Müller
- Max Planck Institute for Human Development, Center for Lifespan Psychology, Berlin, Germany
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7
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Kumar NR, Balraj TA, Shivashankar KK, Jayaram TC, Prashant A. Inflammaging in Multidrug-Resistant Sepsis of Geriatric ICU Patients and Healthcare Challenges. Geriatrics (Basel) 2024; 9:45. [PMID: 38667512 PMCID: PMC11049875 DOI: 10.3390/geriatrics9020045] [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: 01/19/2024] [Revised: 03/08/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
Multidrug-resistant sepsis (MDR) is a pressing concern in intensive care unit (ICU) settings, specifically among geriatric patients who experience age-related immune system changes and comorbidities. The aim of this review is to explore the clinical impact of MDR sepsis in geriatric ICU patients and shed light on healthcare challenges associated with its management. We conducted a comprehensive literature search using the National Center for Biotechnology Information (NCBI) and Google Scholar search engines. Our search incorporated keywords such as "multidrug-resistant sepsis" OR "MDR sepsis", "geriatric ICU patients" OR "elderly ICU patients", and "complications", "healthcare burdens", "diagnostic challenges", and "healthcare challenges" associated with MDR sepsis in "ICU patients" and "geriatric/elderly ICU patients". This review explores the specific risk factors contributing to MDR sepsis, the complexities of diagnostic challenges, and the healthcare burden faced by elderly ICU patients. Notably, the elderly population bears a higher burden of MDR sepsis (57.5%), influenced by various factors, including comorbidities, immunosuppression, age-related immune changes, and resource-limited ICU settings. Furthermore, sepsis imposes a significant economic burden on healthcare systems, with annual costs exceeding $27 billion in the USA. These findings underscore the urgency of addressing MDR sepsis in geriatric ICU patients and the need for tailored interventions to improve outcomes and reduce healthcare costs.
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Affiliation(s)
- Nishitha R. Kumar
- Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education & Research, Mysuru 570015, India; (N.R.K.); (K.K.S.)
| | - Tejashree A. Balraj
- Department of Microbiology, JSS Medical College and Hospital, JSS Academy of Higher Education & Research, Mysuru 570015, India;
| | - Kusuma K. Shivashankar
- Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education & Research, Mysuru 570015, India; (N.R.K.); (K.K.S.)
| | - Tejaswini C. Jayaram
- Department of Geriatrics, JSS Medical College and Hospital, JSS Academy of Higher Education & Research, Mysuru 570015, India;
| | - Akila Prashant
- Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education & Research, Mysuru 570015, India; (N.R.K.); (K.K.S.)
- Department of Medical Genetics, JSS Medical College and Hospital, JSS Academy of Higher Education & Research, Mysuru 570015, India
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8
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Ibarz M, Haas LEM, Ceccato A, Artigas A. The critically ill older patient with sepsis: a narrative review. Ann Intensive Care 2024; 14:6. [PMID: 38200360 PMCID: PMC10781658 DOI: 10.1186/s13613-023-01233-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Sepsis is a significant public health concern, particularly affecting individuals above 70 years in developed countries. This is a crucial fact due to the increasing aging population, their heightened vulnerability to sepsis, and the associated high mortality rates. However, the morbidity and long-term outcomes are even more notable. While many patients respond well to timely and appropriate interventions, it is imperative to enhance efforts in identifying, documenting, preventing, and treating sepsis. Managing sepsis in older patients poses greater challenges and necessitates a comprehensive understanding of predisposing factors and a heightened suspicion for diagnosing infections and assessing the risk of sudden deterioration into sepsis. Despite age often being considered an independent risk factor for mortality and morbidity, recent research emphasizes the pivotal roles of frailty, disease severity, and comorbid conditions in influencing health outcomes. In addition, it is important to inquire about the patient's preferences and establish a personalized treatment plan that considers their potential for recovery with quality of life and functional outcomes. This review provides a summary of the most crucial aspects to consider when dealing with an old critically ill patient with sepsis.
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Affiliation(s)
- Mercedes Ibarz
- Department of Intensive Care Medicine, Hospital Universitari Sagrat Cor, Quirón Salud, Viladomat 288, 08029, Barcelona, Spain.
| | - Lenneke E M Haas
- Department of Intensive Care Medicine, Diakonessenhuis Utrecht, Utrecht, the Netherlands
| | - Adrián Ceccato
- Department of Intensive Care Medicine, Hospital Universitari Sagrat Cor, Quirón Salud, Viladomat 288, 08029, Barcelona, Spain
- Department of Intensive Care Medicine, CIBER Enfermedades Respiratorias, Corporación Sanitaria Universitaria Parc Tauli, Autonomous University of Barcelona, Sabadell, Spain
| | - Antonio Artigas
- Department of Intensive Care Medicine, CIBER Enfermedades Respiratorias, Corporación Sanitaria Universitaria Parc Tauli, Autonomous University of Barcelona, Sabadell, Spain
- Institut d'investigació i innovació Parc Tauli (I3PT-CERCA), Sabadell, Spain
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9
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Müller L, Di Benedetto S. Immunosenescence and Cytomegalovirus: Exploring Their Connection in the Context of Aging, Health, and Disease. Int J Mol Sci 2024; 25:753. [PMID: 38255826 PMCID: PMC10815036 DOI: 10.3390/ijms25020753] [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: 11/18/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Aging induces numerous physiological alterations, with immunosenescence emerging as a pivotal factor. This phenomenon has attracted both researchers and clinicians, prompting profound questions about its implications for health and disease. Among the contributing factors, one intriguing actor in this complex interplay is human cytomegalovirus (CMV), a member of the herpesvirus family. Latent CMV infection exerts a profound influence on the aging immune system, potentially contributing to age-related diseases. This review delves into the intricate relationship between immunosenescence and CMV, revealing how chronic viral infection impacts the aging immune landscape. We explore the mechanisms through which CMV can impact both the composition and functionality of immune cell populations and induce shifts in inflammatory profiles with aging. Moreover, we examine the potential role of CMV in pathologies such as cardiovascular diseases, cancer, neurodegenerative disorders, COVID-19, and Long COVID. This review underlines the importance of understanding the complex interplay between immunosenescence and CMV. It offers insights into the pathophysiology of aging and age-associated diseases, as well as COVID-19 outcomes among the elderly. By unraveling the connections between immunosenescence and CMV, we gain a deeper understanding of aging's remarkable journey and the profound role that viral infections play in transforming the human immune system.
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Affiliation(s)
- Ludmila Müller
- Max Planck Institute for Human Development, Lentzeallee 94, 14195 Berlin, Germany
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10
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Yang J, Liu HC, Zhang JQ, Zou JY, Zhang X, Chen WM, Gu Y, Hong H. The effect of metformin on senescence of T lymphocytes. Immun Ageing 2023; 20:73. [PMID: 38087369 PMCID: PMC10714529 DOI: 10.1186/s12979-023-00394-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/15/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Immunosenescence occurs as people age, leading to an increased incidence of age-related diseases. The number of senescent T cells also rises with age. T cell senescence and immune response dysfunction can result in a decline in immune function, especially in anti-tumor immune responses. Metformin has been shown to have various beneficial effects on health, such as lowering blood sugar levels, reducing the risk of cancer development, and slowing down the aging process. However, the immunomodulatory effects of metformin on senescent T cells still need to be investigated. METHODS PBMCs isolation from different age population (n = 88); Flow Cytometry is applied to determine the phenotypic characterization of senescent T lymphocytes; intracellular staining is applied to determine the function of senescent T cells; Enzyme-Linked Immunosorbent Assay (ELISA) is employed to test the telomerase concentration. The RNA-seq analysis of gene expression associated with T cell senescence. RESULTS The middle-aged group had the highest proportion of senescent T cells. We found that metformin could decrease the number of CD8 + senescent T cells. Metformin affects the secretion of SASP, inhibiting the secretion of IFN-γ in CD8 + senescent T cells. Furthermore, metformin treatment restrained the production of the proinflammatory cytokine IL-6 in lymphocytes. Metformin had minimal effects on Granzyme B secretion in senescent T cells, but it promoted the production of TNF-α in senescent T cells. Additionally, metformin increased the concentration of telomerase and the frequency of undifferentiated T cells. The results of RNA-seq showed that metformin promoted the expression of genes related to stemness and telomerase activity, while inhibiting the expression of DNA damage-associated genes. CONCLUSION Our findings reveal that metformin could inhibit T cell senescence in terms of cell number, effector function, telomerase content and gene expression in middle-aged individuals, which may serve as a promising approach for preventing age-related diseases in this population.
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Affiliation(s)
- Jia Yang
- The First Affiliated Hospital of Sun Yat-Sen University, No.58 Zhong Shan Two Road, Guang Zhou, 510000, Guang Dong, China
| | - Hai-Cheng Liu
- Key Laboratory of Tropical Disease Control of Sun Yat-Sen University, Ministry of Education, The Institute of Immunology of Zhong Shan Medical School, Sun Yat-Sen University, No.74 Zhong Shan Two Road, Guang Zhou, Guang Dong, 510000, China
| | - Jian-Qing Zhang
- The First Affiliated Hospital of Sun Yat-Sen University, No.58 Zhong Shan Two Road, Guang Zhou, 510000, Guang Dong, China
| | - Jian-Yong Zou
- The First Affiliated Hospital of Sun Yat-Sen University, No.58 Zhong Shan Two Road, Guang Zhou, 510000, Guang Dong, China
| | - Xin Zhang
- The First Affiliated Hospital of Sun Yat-Sen University, No.58 Zhong Shan Two Road, Guang Zhou, 510000, Guang Dong, China
| | - Wo-Ming Chen
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yan Jiang West Road, Guang Zhou, 510120, China
| | - Yong Gu
- The First Affiliated Hospital of Sun Yat-Sen University, No.58 Zhong Shan Two Road, Guang Zhou, 510000, Guang Dong, China.
| | - Hai Hong
- Key Laboratory of Tropical Disease Control of Sun Yat-Sen University, Ministry of Education, The Institute of Immunology of Zhong Shan Medical School, Sun Yat-Sen University, No.74 Zhong Shan Two Road, Guang Zhou, Guang Dong, 510000, China.
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Asghari F, Asghary A, Majidi Zolbanin N, Faraji F, Jafari R. Immunosenescence and Inflammaging in COVID-19. Viral Immunol 2023; 36:579-592. [PMID: 37797216 DOI: 10.1089/vim.2023.0045] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023] Open
Abstract
Despite knowledge gaps in understanding the full spectrum of the hyperinflammatory phase caused by SARS-CoV-2, according to the World Health Organization (WHO), COVID-19 is still the leading cause of death worldwide. Susceptible people to severe COVID-19 are those with underlying medical conditions or those with dysregulated and senescence-associated immune responses. As the immune system undergoes aging in the elderly, such drastic changes predispose them to various diseases and affect their responsiveness to infections, as seen in COVID-19. At-risk groups experience poor prognosis in terms of disease recovery. Changes in the quantity and quality of immune cell function have been described in numerous literature sites. Impaired immune cell function along with age-related metabolic changes can lead to features such as hyperinflammatory response, immunosenescence, and inflammaging in COVID-19. Inflammaging is related to the increased activity of the most inflammatory factors and is the main cause of age-related diseases and tissue failure in the elderly. Since hyperinflammation is a common feature of most severe cases of COVID-19, this pathway, which is not fully understood, leads to immunosenescence and inflammaging in some individuals, especially in the elderly and those with comorbidities. In this review, we shed some light on the age-related abnormalities of innate and adaptive immune cells and how hyperinflammatory immune responses contribute to the inflammaging process, leading to clinical deterioration. Further, we provide insights into immunomodulation-based therapeutic approaches, which are potentially important considerations in vaccine design for elderly populations.
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Affiliation(s)
- Faezeh Asghari
- Department of Immunology, School of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Amir Asghary
- Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Naime Majidi Zolbanin
- Experimental and Applied Pharmaceutical Research Center, Urmia University of Medical Sciences, Urmia, Iran
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Fatemeh Faraji
- Antimicrobial Resistance Research Center, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran
| | - Reza Jafari
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
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Müller L, Di Benedetto S. From aging to long COVID: exploring the convergence of immunosenescence, inflammaging, and autoimmunity. Front Immunol 2023; 14:1298004. [PMID: 37942323 PMCID: PMC10628127 DOI: 10.3389/fimmu.2023.1298004] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 10/12/2023] [Indexed: 11/10/2023] Open
Abstract
The process of aging is accompanied by a dynamic restructuring of the immune response, a phenomenon known as immunosenescence. This mini-review navigates through the complex landscape of age-associated immune changes, chronic inflammation, age-related autoimmune tendencies, and their potential links with immunopathology of Long COVID. Immunosenescence serves as an introductory departure point, elucidating alterations in immune cell profiles and their functional dynamics, changes in T-cell receptor signaling, cytokine network dysregulation, and compromised regulatory T-cell function. Subsequent scrutiny of chronic inflammation, or "inflammaging," highlights its roles in age-related autoimmune susceptibilities and its potential as a mediator of the immune perturbations observed in Long COVID patients. The introduction of epigenetic facets further amplifies the potential interconnections. In this compact review, we consider the dynamic interactions between immunosenescence, inflammation, and autoimmunity. We aim to explore the multifaceted relationships that link these processes and shed light on the underlying mechanisms that drive their interconnectedness. With a focus on understanding the immunological changes in the context of aging, we seek to provide insights into how immunosenescence and inflammation contribute to the emergence and progression of autoimmune disorders in the elderly and may serve as potential mediator for Long COVID disturbances.
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Affiliation(s)
- Ludmila Müller
- Max Planck Institute for Human Development, Center for Lifespan Psychology, Berlin, Germany
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Kasmani MY, Topchyan P, Brown AK, Brown RJ, Wu X, Chen Y, Khatun A, Alson D, Wu Y, Burns R, Lin CW, Kudek MR, Sun J, Cui W. A spatial sequencing atlas of age-induced changes in the lung during influenza infection. Nat Commun 2023; 14:6597. [PMID: 37852965 PMCID: PMC10584893 DOI: 10.1038/s41467-023-42021-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/26/2023] [Indexed: 10/20/2023] Open
Abstract
Influenza virus infection causes increased morbidity and mortality in the elderly. Aging impairs the immune response to influenza, both intrinsically and because of altered interactions with endothelial and pulmonary epithelial cells. To characterize these changes, we performed single-cell RNA sequencing (scRNA-seq), spatial transcriptomics, and bulk RNA sequencing (bulk RNA-seq) on lung tissue from young and aged female mice at days 0, 3, and 9 post-influenza infection. Our analyses identified dozens of key genes differentially expressed in kinetic, age-dependent, and cell type-specific manners. Aged immune cells exhibited altered inflammatory, memory, and chemotactic profiles. Aged endothelial cells demonstrated characteristics of reduced vascular wound healing and a prothrombotic state. Spatial transcriptomics identified novel profibrotic and antifibrotic markers expressed by epithelial and non-epithelial cells, highlighting the complex networks that promote fibrosis in aged lungs. Bulk RNA-seq generated a timeline of global transcriptional activity, showing increased expression of genes involved in inflammation and coagulation in aged lungs. Our work provides an atlas of high-throughput sequencing methodologies that can be used to investigate age-related changes in the response to influenza virus, identify novel cell-cell interactions for further study, and ultimately uncover potential therapeutic targets to improve health outcomes in the elderly following influenza infection.
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Affiliation(s)
- Moujtaba Y Kasmani
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Paytsar Topchyan
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Ashley K Brown
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Ryan J Brown
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Xiaopeng Wu
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Yao Chen
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Achia Khatun
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Donia Alson
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Yue Wu
- Carter Immunology Center, University of Virginia, Charlottesville, VA, 22908, USA
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, 22908, USA
| | - Robert Burns
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Chien-Wei Lin
- Department of Biostatistics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Matthew R Kudek
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Jie Sun
- Carter Immunology Center, University of Virginia, Charlottesville, VA, 22908, USA
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, 22908, USA
| | - Weiguo Cui
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA.
- Department of Pathology, Northwestern University, Chicago, IL, 60611, USA.
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de Fàbregues O, Sellés M, Ramos-Vicente D, Roch G, Vila M, Bové J. Relevance of tissue-resident memory CD8 T cells in the onset of Parkinson's disease and examination of its possible etiologies: infectious or autoimmune? Neurobiol Dis 2023; 187:106308. [PMID: 37741513 DOI: 10.1016/j.nbd.2023.106308] [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: 12/16/2022] [Revised: 05/05/2023] [Accepted: 09/20/2023] [Indexed: 09/25/2023] Open
Abstract
Tissue-resident memory CD8 T cells are responsible for local immune surveillance in different tissues, including the brain. They constitute the first line of defense against pathogens and cancer cells and play a role in autoimmunity. A recently published study demonstrated that CD8 T cells with markers of residency containing distinct granzymes and interferon-γ infiltrate the parenchyma of the substantia nigra and contact dopaminergic neurons in an early premotor stage of Parkinson's disease. This infiltration precedes α-synuclein aggregation and neuronal loss in the substantia nigra, suggesting a relevant role for CD8 T cells in the onset of the disease. To date, the nature of the antigen that initiates the adaptive immune response remains unknown. This review will discuss the role of tissue-resident memory CD8 T cells in brain immune homeostasis and in the onset of Parkinson's disease and other neurological diseases. We also discuss how aging and genetic factors can affect the CD8 T cell immune response and how animal models can be misleading when studying human-related immune response. Finally, we speculate about a possible infectious or autoimmune origin of Parkinson's disease.
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Affiliation(s)
- Oriol de Fàbregues
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Barcelona, Catalonia, Spain; Movement Disorders Unit, Neurology Department, Vall d'Hebron University Hospital
| | - Maria Sellés
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Barcelona, Catalonia, Spain
| | - David Ramos-Vicente
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Barcelona, Catalonia, Spain
| | - Gerard Roch
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Barcelona, Catalonia, Spain
| | - Miquel Vila
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Barcelona, Catalonia, Spain; Department of Biochemistry and Molecular Biology, Autonomous University of Barcelona, Barcelona, Catalonia, Spain; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA; Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Catalonia, Spain
| | - Jordi Bové
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Barcelona, Catalonia, Spain.
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Klopack ET. Chronic Stress and Latent Virus Reactivation: Effects on Immune Aging, Chronic Disease Morbidity, and Mortality. J Gerontol B Psychol Sci Soc Sci 2023; 78:1707-1716. [PMID: 37294880 PMCID: PMC10561893 DOI: 10.1093/geronb/gbad087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Indexed: 06/11/2023] Open
Abstract
OBJECTIVES Social stress has been shown to affect immune functioning. Past research has found that chronic social stress and latent viral infections accelerate immune aging, leading to chronic disease morbidity and mortality. Chronic stress may also reactivate latent viral infections, like cytomegalovirus (CMV), accelerating the aging of the immune system. METHOD Utilizing panel survey data from 8,995 U.S. adults aged 56 or older from the Health and Retirement Study, this study investigates whether chronic stress interacts with CMV positivity to drive aging of the immune system, multimorbidity, and mortality. RESULTS Results of moderated mediation analysis indicate that the effect of CMV positivity on morbidity and mortality as mediated by immune aging indicators is amplified by chronic stress. DISCUSSION These findings suggest that immune aging is a biological pathway underlying the stress process and help explain past findings in the literature on stress and health.
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Affiliation(s)
- Eric T Klopack
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
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Paciorek M, Bieńkowski C, Kowalska JD, Skrzat-Klapaczyńska A, Bednarska A, Krogulec D, Cholewińska G, Kowalski J, Podlasin R, Ropelewska-Łącka K, Wasilewski P, Boros PW, Martusiewicz-Boros MM, Pulik P, Pihowicz A, Horban A. Hospital Admission Factors Independently Affecting the Risk of Mortality of COVID-19 Patients. J Clin Med 2023; 12:6264. [PMID: 37834907 PMCID: PMC10573469 DOI: 10.3390/jcm12196264] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/18/2023] [Accepted: 09/24/2023] [Indexed: 10/15/2023] Open
Abstract
INTRODUCTION COVID-19 is a disease characterized by high in-hospital mortality, which seems to be dependent on many predisposing factors. OBJECTIVES The aim of this study was to analyze the clinical symptoms, abnormalities in the results of laboratory tests, and coexisting chronic diseases that independently affected the risk of in-hospital mortality in patients with COVID-19. PATIENTS AND METHODS We analyzed the records of patients with COVID-19 who were hospitalized from 6 March 2020 to 30 November 2021. RESULTS Out of the entire group of 2138 patients who were analyzed, 12.82% died during hospitalization. In-hospital mortality was independently associated with older age (OR 1.53, 95% CI 1.20-1.97); lower arterial blood oxygen saturation (OR 0.95, 95% CI 0.92-0.99); the presence of a neoplasm (OR 4.45, 95% CI 2.01-9.62), a stomach ulcer (OR 3.35, 95% CI 0.94-11.31), and dementia (OR 3.40, 95% CI 1.36-8.26); a higher score on the SOFA scale (OR 1.73, 95% CI 1.52-1.99); higher lactate dehydrogenase (LDH) (OR 1.08, 95% CI 1.05-1.12); higher N-terminal pro-brain natriuretic peptide (NT pro BNP) (OR 1.06, 95% CI 1.01-1.11); and lower total bilirubin in blood concentration (OR 0.94, 95% CI 0.90-0.99). CONCLUSIONS We found that low oxygen saturation, old age, and the coexistence of cancer, gastric ulcers, and dementia syndrome were variables that independently increased mortality during hospitalization due to COVID-19. Moreover, we found that decreased platelet count and bilirubin concentration and increased levels of LDH and NT-proBNP were laboratory test results that independently indicated a higher risk of mortality. We also confirmed the usefulness of the SOFA scale in predicting treatment results. The ability to identify mortality risk factors on admission to hospital will facilitate both adjusting the intensity of treatment and the monitoring of patients infected with SARS-CoV-2.
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Affiliation(s)
- Marcin Paciorek
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Carlo Bieńkowski
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Justyna Dominika Kowalska
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Agata Skrzat-Klapaczyńska
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Agnieszka Bednarska
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Dominika Krogulec
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Grażyna Cholewińska
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
- Department of Infectious Diseases, Collegium Medicum, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Jacek Kowalski
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
- Department of Infectious Diseases, Collegium Medicum, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Regina Podlasin
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
- Department of Infectious Diseases, Collegium Medicum, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Katarzyna Ropelewska-Łącka
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
- Department of Infectious Diseases, Collegium Medicum, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Piotr Wasilewski
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
- Department of Infectious Diseases, Collegium Medicum, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Piotr W. Boros
- Lung Pathophysiology Department, National TB & Lung Diseases Research Institute, 01-138 Warsaw, Poland;
| | | | - Piotr Pulik
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Andrzej Pihowicz
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
| | - Andrzej Horban
- Department of Adults’ Infectious Diseases, Medical University of Warsaw, 02-001 Warsaw, Poland; (M.P.); (J.D.K.); (A.S.-K.); (A.B.); (D.K.); (A.H.)
- Hospital for Infectious Diseases in Warsaw, 01-201 Warsaw, Poland; (G.C.); (J.K.); (R.P.); (K.R.-Ł.); (P.W.); (P.P.); (A.P.)
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You Y, Kim SH, Kim CH, Kim IH, Shin Y, Kim TR, Sohn M, Park J. Immune-Stimulating Potential of Lacticaseibacillus rhamnosus LM1019 in RAW 264.7 Cells and Immunosuppressed Mice Induced by Cyclophosphamide. Microorganisms 2023; 11:2312. [PMID: 37764156 PMCID: PMC10535240 DOI: 10.3390/microorganisms11092312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Probiotics, including Lacticaseibacillus rhamnosus (L. rhamnosus), have gained recognition for their potential health benefits, such as enhancing immune function, maintaining gut health, and improving nutrient absorption. This study investigated the effectiveness of L. rhamnosus LM1019 (LM1019) in enhancing immune function. In RAW 264.7 cells, LM1019 demonstrated dose-dependent immune stimulation by increasing nitric oxide production, gene expression of proinflammatory cytokines, and the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). These effects were mediated through the activation of mitogen-activated protein kinases (MAPKs) and nuclear factor-kappa B (NF-κB) translocation without inducing cytotoxicity. Furthermore, orally administered LM1019 was evaluated in immunosuppressed mice induced by cyclophosphamide (CTX). High-dose administration of LM1019 significantly increased the subpopulations of lymphocytes, specifically helper T cells (CD4+), as well as two subtypes of natural killer (NK) cells, namely, IFN-γ+ and granzyme B+ NK cells. Additionally, LM1019 at a high dose led to elevated levels of proinflammatory cytokines, including IFN-γ and IL-12, compared to CTX-treated mice. These findings highlight the potential of LM1019 in enhancing the immune system. The study contributes to the growing body of research on the beneficial effects of probiotics on immune function.
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Affiliation(s)
- Yeji You
- Microbiome R&D Center, Lactomason Co., Ltd., Jinju 52840, Republic of Korea; (Y.Y.); (T.-R.K.); (M.S.)
| | - Sung-Hwan Kim
- Food Research Center, Binggrae Co., Ltd., Namyangju 12253, Republic of Korea; (S.-H.K.); (C.-H.K.); (I.-H.K.); (Y.S.)
| | - Chul-Hong Kim
- Food Research Center, Binggrae Co., Ltd., Namyangju 12253, Republic of Korea; (S.-H.K.); (C.-H.K.); (I.-H.K.); (Y.S.)
| | - In-Hwan Kim
- Food Research Center, Binggrae Co., Ltd., Namyangju 12253, Republic of Korea; (S.-H.K.); (C.-H.K.); (I.-H.K.); (Y.S.)
| | - YoungSup Shin
- Food Research Center, Binggrae Co., Ltd., Namyangju 12253, Republic of Korea; (S.-H.K.); (C.-H.K.); (I.-H.K.); (Y.S.)
| | - Tae-Rahk Kim
- Microbiome R&D Center, Lactomason Co., Ltd., Jinju 52840, Republic of Korea; (Y.Y.); (T.-R.K.); (M.S.)
| | - Minn Sohn
- Microbiome R&D Center, Lactomason Co., Ltd., Jinju 52840, Republic of Korea; (Y.Y.); (T.-R.K.); (M.S.)
| | - Jeseong Park
- Microbiome R&D Center, Lactomason Co., Ltd., Jinju 52840, Republic of Korea; (Y.Y.); (T.-R.K.); (M.S.)
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Wang J, Pei L, Zhao T, Liu X, Wang Q, Zhang S, Li J, Wu H, Niu D. CD4 + T cells related to disease severity in elderly and frailty community-acquired pneumonia patients: A retrospective cohort study. Immun Inflamm Dis 2023; 11:e1009. [PMID: 37773700 PMCID: PMC10540148 DOI: 10.1002/iid3.1009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/27/2023] [Accepted: 08/29/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUNDS Elderly and frailty individuals show a more senescent immune system, which may relate to worse outcome in community-acquired pneumonia (CAP). This study aimed to explore prognostic factors related to immune. METHODS Sixty of elderly (≥65 years) and frailty (clinical frailty scale ≥5 scores) nonsevere CAP patients and 60 severe CAP (SCAP) patients were recruited at our center. Clinical and laboratory data, and several assessment scores were collected. RESULTS Compared with nonsevere CAP group, the elderly and frailty SCAP patients showed higher level of BMI, PaCO2 and lactate in arterial blood-gas, CURB-65 score, ICU admission, mechanical ventilation, shock accidence, and longer hospital stay using two-tailed t test. The SCAP group also showed increased CRP, IL-6, and PCT, and decreased CD3+ T cells, CD4+ T cells, and CD8+ T cells. Logistic regression analysis showed that CD4+ T cells, IL-6 and PCT were independent prognostic factors for SCAP. The area under the receiver operating characteristic (ROC) curve for CD4+ T cells combined with PCT was 0.771 (95% CI 0.683-0.859), and the sensitivity and specificity were both 76.7%. Paired t test analysis showed that low CD4+ T cells in SCAP patients increased after treatment. CONCLUSIONS CD4+ T cells decreased in elderly and frailty SCAP patients, and CD4+ T cells combined with PCT were relatively accurate in the prediction of elderly and frailty SCAP.
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Affiliation(s)
- Jue Wang
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Lu Pei
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Ting Zhao
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Xiaoli Liu
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Quanrong Wang
- Critical Medicine Department of Huangpi District People's Hospital Affiliated to Jianghan UniversityWuhanChina
| | - Shiyu Zhang
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Jubo Li
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Hongwei Wu
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
| | - Dongsheng Niu
- Jincheng People's HospitalJinchengChina
- Jincheng Hospital Affiliated to Changzhi Medical CollegeJinchengChina
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Bröde P, Claus M, Gajewski PD, Getzmann S, Wascher E, Watzl C. From Immunosenescence to Aging Types-Establishing Reference Intervals for Immune Age Biomarkers by Centile Estimation. Int J Mol Sci 2023; 24:13186. [PMID: 37685992 PMCID: PMC10487963 DOI: 10.3390/ijms241713186] [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: 08/02/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
Immunological aging type definition requires establishing reference intervals from the distribution of immunosenescence biomarkers conditional on age. For 1605 individuals (18-97 years), we determined the comprehensive immune age index IMMAX from flow-cytometry-based blood cell sub-populations and identified age-specific centiles by fitting generalized additive models for location, scale, and shape. The centiles were uncorrelated with age and facilitated the categorization of individuals as immunologically slow or fast aging types. Using its 50th percentile as a reference, we rescaled the IMMAX to equivalent years of life (EYOL) and computed the immunological age gap as the difference between EYOL and chronological age. Applied to preliminary baseline and follow-up measurements from 53 participants of the Dortmund Vital Study (Clinical-Trials.gov Identifier: NCT05155397), the averaged changes in the IMMAX and EYOL conformed to the 5-year follow-up period, whereas no significant changes occurred concerning IMMAX centiles and age gap. This suggested that the participants immunologically adapted to aging and kept their relative positions within the cohort. Sex was non-significant. Methodical comparisons indicated that future confirmatory analyses with the completed follow-up examinations could rely on percentile curves estimated by simple linear quantile regression, while the selection of the immunosenescence biomarker will greatly influence the outcome, with IMMAX representing the preferable choice.
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Affiliation(s)
- Peter Bröde
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Ardeystraße 67, 44139 Dortmund, Germany; (M.C.); (P.D.G.); (S.G.); (E.W.); (C.W.)
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20
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Müller L, Di Benedetto S. Aged brain and neuroimmune responses to COVID-19: post-acute sequelae and modulatory effects of behavioral and nutritional interventions. Immun Ageing 2023; 20:17. [PMID: 37046272 PMCID: PMC10090758 DOI: 10.1186/s12979-023-00341-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023]
Abstract
Advanced age is one of the significant risk determinants for coronavirus disease 2019 (COVID-19)-related mortality and for long COVID complications. The contributing factors may include the age-related dynamical remodeling of the immune system, known as immunosenescence and chronic low-grade systemic inflammation. Both of these factors may induce an inflammatory milieu in the aged brain and drive the changes in the microenvironment of neurons and microglia, which are characterized by a general condition of chronic inflammation, so-called neuroinflammation. Emerging evidence reveals that the immune privilege in the aging brain may be compromised. Resident brain cells, such as astrocytes, neurons, oligodendrocytes and microglia, but also infiltrating immune cells, such as monocytes, T cells and macrophages participate in the complex intercellular networks and multiple reciprocal interactions. Especially changes in microglia playing a regulatory role in inflammation, contribute to disturbing of the brain homeostasis and to impairments of the neuroimmune responses. Neuroinflammation may trigger structural damage, diminish regeneration, induce neuronal cell death, modulate synaptic remodeling and in this manner negatively interfere with the brain functions.In this review article, we give insights into neuroimmune interactions in the aged brain and highlight the impact of COVID-19 on the functional systems already modulated by immunosenescence and neuroinflammation. We discuss the potential ways of these interactions with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and review proposed neuroimmune mechanisms and biological factors that may contribute to the development of persisting long COVID conditions. We summarize the potential mechanisms responsible for long COVID, including inflammation, autoimmunity, direct virus-mediated cytotoxicity, hypercoagulation, mitochondrial failure, dysbiosis, and the reactivation of other persisting viruses, such as the Cytomegalovirus (CMV). Finally, we discuss the effects of various interventional options that can decrease the propagation of biological, physiological, and psychosocial stressors that are responsible for neuroimmune activation and which may inhibit the triggering of unbalanced inflammatory responses. We highlight the modulatory effects of bioactive nutritional compounds along with the multimodal benefits of behavioral interventions and moderate exercise, which can be applied as postinfectious interventions in order to improve brain health.
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Affiliation(s)
- Ludmila Müller
- Center for Lifespan Psychology, Max Planck Institute for Human Development, Lentzeallee 94, 14195 Berlin, Germany
| | - Svetlana Di Benedetto
- Center for Lifespan Psychology, Max Planck Institute for Human Development, Lentzeallee 94, 14195 Berlin, Germany
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21
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Lu Y, Ruan Y, Hong P, Rui K, Liu Q, Wang S, Cui D. T-cell senescence: A crucial player in autoimmune diseases. Clin Immunol 2023; 248:109202. [PMID: 36470338 DOI: 10.1016/j.clim.2022.109202] [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: 09/05/2022] [Revised: 10/24/2022] [Accepted: 11/23/2022] [Indexed: 12/12/2022]
Abstract
Senescent T cells are proliferative disabled lymphocytes that lack antigen-specific responses. The development of T-cell senescence in autoimmune diseases contributes to immunological disorders and disease progression. Senescent T cells lack costimulatory markers with the reduction of T cell receptor repertoire and the uptake of natural killer cell receptors. Senescent T cells exert cytotoxic effects through the expression of perforin, granzymes, tumor necrosis factor, and other molecules without the antigen-presenting process. DNA damage accumulation, telomere damage, and limited DNA repair capacity are important features of senescent T cells. Impaired mitochondrial function and accumulation of reactive oxygen species contribute to T cell senescence. Alleviation of T-cell senescence could provide potential targets for the treatment of autoimmune diseases.
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Affiliation(s)
- Yinyun Lu
- Department of Infectious Diseases, Shaoxing People's Hospital, Shaoxing, China
| | - Yongchun Ruan
- Department of Infectious Diseases, Shaoxing People's Hospital, Shaoxing, China
| | - Pan Hong
- Department of Hematology, Shaoxing People's Hospital, Shaoxing, China
| | - Ke Rui
- Department of Transfusion, Shaoxing People's Hospital, Shaoxing, China
| | - Qi Liu
- Department of Laboratory Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, China.
| | - Shengjun Wang
- Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China; Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.
| | - Dawei Cui
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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22
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Quan XQ, Ruan L, Zhou HR, Gao WL, Zhang Q, Zhang CT. Age-related changes in peripheral T-cell subpopulations in elderly individuals: An observational study. Open Life Sci 2023; 18:20220557. [PMID: 36816803 PMCID: PMC9922058 DOI: 10.1515/biol-2022-0557] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 11/23/2022] [Accepted: 01/02/2023] [Indexed: 02/11/2023] Open
Abstract
The age-related decline in T-cell function among elderly individuals remains unclear. We thus investigated the interrelationship between T-cell subsets and age to identify the changes in T-cell phenotypes and develop an age prediction model for the elderly population. A total of 127 individuals aged >60 years were divided into three groups (youngest-old group, 61-70 years, n = 34; middle-old group, 71-80 years, n = 53; and oldest-old group, ≥ 81 years, n = 40). The percentage of CD8+CD28- cells (P = 0.001) was highest in the oldest-old group and then followed by the middle-old group, while the youngest-old group was the lowest. Both females and males demonstrated significant decreases in the absolute counts of CD4+CD45RA+ cells (P = 0.020; P = 0.002) and CD8+CD28+ cells (P = 0.015; P = 0.005) with age. Multivariate linear regression showed that the percentage of CD8+CD28- cells (P < 0.001) was an independent predictor of aging after adjusting for sex, body mass index, hospitalization duration, smoking, drinking, chronic medical illness, and medications at admission. In conclusion, our results suggest that aging in elderly individuals is accompanied by a decrease in the counts of T-cell subpopulations. CD8+CD28- cells may be potential targets for elderly individuals in antiaging-related immunosenescence.
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Affiliation(s)
- Xiao-Qing Quan
- Department of Geriatrics, Department of General Practice, Shenzhen Longhua District Central Hospital, The Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, 518000, China
| | - Lei Ruan
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hai-Rong Zhou
- Department of Geriatrics, Department of General Practice, Shenzhen Longhua District Central Hospital, The Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, 518000, China
| | - Wei-Liang Gao
- Department of Geriatrics, Department of General Practice, Shenzhen Longhua District Central Hospital, The Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, 518000, China
| | - Qing Zhang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Cun-Tai Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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23
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Elsayed R, Elashiry M, Liu Y, Morandini AC, El-Awady A, Elashiry MM, Hamrick M, Cutler CW. Microbially-Induced Exosomes from Dendritic Cells Promote Paracrine Immune Senescence: Novel Mechanism of Bone Degenerative Disease in Mice. Aging Dis 2023; 14:136-151. [PMID: 36818565 PMCID: PMC9937696 DOI: 10.14336/ad.2022.0623] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/23/2022] [Indexed: 11/18/2022] Open
Abstract
As the aging population grows, chronic age-related bone degenerative diseases become more prevalent and severe. One such disease, periodontitis (PD), rises to 70.1% prevalence in Americans 65 years and older. PD has been linked to increased risk of other age-related diseases with more serious mortality and morbidity profiles such as Alzheimer's disease and cardiovascular disease, but the cellular and biological mechanisms remain unclear. Recent in vitro studies from our group indicate that murine dendritic cells (DCs) and T cells are vulnerable to immune senescence. This occurs through a distinct process involving invasion of DCs by dysbiotic pathogen Porphyromonas gingivalis (Pg) activating the senescence associated secretory phenotype (SASP). Exosomes of the Pg-induced SASP transmit senescence to normal bystander DC and T cells, ablating antigen presentation. The biological significance of these findings in vivo and the mechanisms involved were examined in the present study using young (4-5mo) or old (22-24mo) mice subjected to ligature-induced PD, with or without dysbiotic oral pathogen and injection of Pg-induced DC exosomes. Senescence profiling of gingiva and draining lymph nodes (LN) corroborates role of advanced age and PD in elevation of senescence biomarkers beta galactosidase (SA-β-Gal), p16 INK4A p21Waf1/Clip1, IL6, TNFα, and IL1β, with attendant increase in alveolar bone loss, reversed by senolytic agent rapamycin. Immunophenotyping of gingiva and LN revealed that myeloid CD11c+ DCs and T cells are particularly vulnerable to senescence in vivo under these conditions. Moreover, Pg-induced DC exosomes were the most potent inducers of alveolar bone loss and immune senescence, and capable of overcoming senescence resistance of LN T cells in young mice. We conclude that immune senescence, compounded by advanced age, and accelerated by oral dysbiosis and its induced SASP exosomes, plays a pivotal role in the pathophysiology of experimental periodontitis.
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Affiliation(s)
- Ranya Elsayed
- Department of Periodontics, Dental College of Georgia at Augusta University, GA, USA.
| | - Mahmoud Elashiry
- Department of Periodontics, Dental College of Georgia at Augusta University, GA, USA.
| | - Yutao Liu
- Department of Cellular Biology and Anatomy, Augusta University, GA, USA.
| | - Ana C. Morandini
- Department of Periodontics, Dental College of Georgia at Augusta University, GA, USA.
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, GA, USA.
| | - Ahmed El-Awady
- Department of Periodontics, Dental College of Georgia at Augusta University, GA, USA.
| | - Mohamed M. Elashiry
- Department of Endodontics, Faculty of Dentistry, Ain Shams University, Cairo Egypt.
| | - Mark Hamrick
- Department of Cellular Biology and Anatomy, Augusta University, GA, USA.
| | - Christopher W. Cutler
- Department of Periodontics, Dental College of Georgia at Augusta University, GA, USA.
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24
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Qiu S, Liao J, Luo X, Chen X. Prognostic Value of the Neutrophil-to-Lymphocyte Ratio in Older Patients with Acute Ischemic Stroke. J NIPPON MED SCH 2023; 90:58-63. [PMID: 36908129 DOI: 10.1272/jnms.jnms.2023_90-110] [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] [Indexed: 03/13/2023]
Abstract
BACKGROUND The prognostic value of the neutrophil-to-lymphocyte ratio (NLR), an inflammatory indicator, for 90-day outcomes has not been determined for patients with acute ischemic stroke aged ≥ 80 years. Therefore, this study examined the predictive significance of the NLR for estimating the 90-day outcomes of older patients with acute ischemic stroke. METHODS Data from patients aged ≥ 80 years were recorded within 7 days of ischemic stroke onset during the period from January 2019 to June 2021. A Kaplan-Meier curve was drawn based on the incidence of adverse outcomes to compare the survival probability of each group at different time periods. Cox multivariate regression was used to explore adverse events affecting patient prognosis. RESULTS A total of 560 patients were initially recruited; of these, 476 were eligible for inclusion. The log-rank test showed that the survival rates of the groups differed. The 90-day survival rate was significantly lower in the group with the highest NLR than in the group with the lowest NLR. Multivariate Cox regression analysis showed that after adjusting for risk factors, a high NLR and a high National Institutes of Health Stroke Scale score were independent risk factors for 90-day mortality. According to the receiver operating characteristic analysis, the area under the curve for predicting mortality at 90 days was 0.74. CONCLUSION This study confirmed that a high NLR is an independent risk factor for acute ischemic stroke and has predictive value for 90-day prognosis in patients aged ≥ 80 years.
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Affiliation(s)
- Shuang Qiu
- Department of Neurology, Affiliated Hospital of Southwest Medical University
| | - Jie Liao
- Department of Neurology, Affiliated Hospital of Southwest Medical University
| | - Xin Luo
- Department of Neurology, Affiliated Hospital of Southwest Medical University
| | - Xiu Chen
- Department of Neurology, Affiliated Hospital of Southwest Medical University
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25
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How Are Older Adults Different Than Other Adults for Infections? INFECTIOUS DISEASES IN CLINICAL PRACTICE 2023. [DOI: 10.1097/ipc.0000000000001197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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González-Bermúdez B, Kobayashi H, Abarca-Ortega A, Córcoles-Lucas M, González-Sánchez M, De la Fuente M, Guinea GV, Elices M, Plaza GR. Aging is accompanied by T-cell stiffening and reduced interstitial migration through dysfunctional nuclear organization. Immunology 2022; 167:622-639. [PMID: 36054660 DOI: 10.1111/imm.13559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023] Open
Abstract
Age-associated changes in T-cell function play a central role in immunosenescence. The role of aging in the decreased T-cell repertoire, primarily because of thymic involution, has been extensively studied. However, increasing evidence indicates that aging also modulates the mechanical properties of cells and the internal ordering of diverse cell components. Cellular functions are generally dictated by the biophysical phenotype of cells, which itself is also tightly regulated at the molecular level. Based on previous evidence suggesting that the relative nuclear size contributes to variations of T-cell stiffness, here we examined whether age-associated changes in T-cell migration are dictated by biophysical parameters, in part through nuclear cytoskeleton organization and cell deformability. In this study, we first performed longitudinal analyses of a repertoire of 111 functional, biophysical and biomolecular features of the nucleus and cytoskeleton of mice CD4+ and CD8+ T cells, in both naive and memory state. Focusing on the pairwise correlations, we found that age-related changes in nuclear architecture and internal ordering were correlated with T-cell stiffening and declined interstitial migration. A similarity analysis confirmed that cell-to-cell variation was a direct result of the aging process and we applied regression models to identify biomarkers that can accurately estimate individuals' age. Finally, we propose a biophysical model for a comprehensive understanding of the results: aging involves an evolution of the relative nuclear size, in part through DNA-hypomethylation and nuclear lamin B1, which implies an increased cell stiffness, thus inducing a decline in cell migration.
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Affiliation(s)
- Blanca González-Bermúdez
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Materials Science, E.T.S.I. de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- IdISSC, Madrid, Spain
| | - Hikaru Kobayashi
- Department of Genetics, Physiology and Microbiology, Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, Madrid, Spain
| | - Aldo Abarca-Ortega
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Materials Science, E.T.S.I. de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- Departamento de Ingeniería Mecánica, Universidad de Santiago de Chile, Santiago, Chile
| | - Miguel Córcoles-Lucas
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Materials Science, E.T.S.I. de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
| | - Mónica González-Sánchez
- Department of Genetics, Physiology and Microbiology, Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, Madrid, Spain
| | - Mónica De la Fuente
- Department of Genetics, Physiology and Microbiology, Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, Madrid, Spain
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Materials Science, E.T.S.I. de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- IdISSC, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Manuel Elices
- Department of Materials Science, E.T.S.I. de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
| | - Gustavo R Plaza
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Materials Science, E.T.S.I. de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- IdISSC, Madrid, Spain
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27
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Abstract
PURPOSE OF REVIEW The development of cancer in patients with genetically determined inborn errors of immunity (IEI) is much higher than in the general population. The hallmarks of cancer are a conceptualization tool that can refine the complexities of cancer development and pathophysiology. Each genetic defect may impose a different pathological tumor predisposition, which needs to be identified and linked with known hallmarks of cancer. RECENT FINDINGS Four new hallmarks of cancer have been suggested, recently, including unlocking phenotypic plasticity, senescent cells, nonmutational epigenetic reprogramming, and polymorphic microbiomes. Moreover, more than 50 new IEI genes have been discovered during the last 2 years from which 15 monogenic defects perturb tumor immune surveillance in patients. SUMMARY This review provides a more comprehensive and updated overview of all 14 cancer hallmarks in IEI patients and covers aspects of cancer predisposition in novel genes in the ever-increasing field of IEI.
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28
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Jinna N, Rida P, Su T, Gong Z, Yao S, LaBarge M, Natarajan R, Jovanovic-Talisman T, Ambrosone C, Seewaldt V. The DARC Side of Inflamm-Aging: Duffy Antigen Receptor for Chemokines (DARC/ACKR1) as a Potential Biomarker of Aging, Immunosenescence, and Breast Oncogenesis among High-Risk Subpopulations. Cells 2022; 11:cells11233818. [PMID: 36497078 PMCID: PMC9740232 DOI: 10.3390/cells11233818] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/09/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
The proclivity of certain pre-malignant and pre-invasive breast lesions to progress while others do not continues to perplex clinicians. Clinicians remain at a crossroads with effectively managing the high-risk patient subpopulation owing to the paucity of biomarkers that can adequately risk-stratify and inform clinical decisions that circumvent unnecessary administration of cytotoxic and invasive treatments. The immune system mounts the most important line of defense against tumorigenesis and progression. Unfortunately, this defense declines or "ages" over time-a phenomenon known as immunosenescence. This results in "inflamm-aging" or the excessive infiltration of pro-inflammatory chemokines, which alters the leukocyte composition of the tissue microenvironment, and concomitant immunoediting of these leukocytes to diminish their antitumor immune functions. Collectively, these effects can foster the sequelae of neoplastic transformation and progression. The erythrocyte cell antigen, Duffy antigen receptor for chemokines(DARC/ACKR1), binds and internalizes chemokines to maintain homeostatic levels and modulate leukocyte trafficking. A negative DARC status is highly prevalent among subpopulations of West African genetic ancestry, who are at higher risk of developing breast cancer and disease progression at a younger age. However, the role of DARC in accelerated inflamm-aging and malignant transformation remains underexplored. Herein, we review compelling evidence suggesting that DARC may be protective against inflamm-aging and, therefore, reduce the risk of a high-risk lesion progressing to malignancy. We also discuss evidence supporting that immunotherapeutic intervention-based on DARC status-among high-risk subpopulations may evade malignant transformation and progression. A closer look into this unique role of DARC could glean deeper insight into the immune response profile of individual high-risk patients and their predisposition to progress as well as guide the administration of more "cyto-friendly" immunotherapeutic intervention to potentially "turn back the clock" on inflamm-aging-mediated oncogenesis and progression.
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Affiliation(s)
- Nikita Jinna
- Department of Population Science, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Padmashree Rida
- Department of Science, Rowland Hall, Salt Lake City, UT 84102, USA
| | - Tianyi Su
- Department of Science, Rowland Hall, Salt Lake City, UT 84102, USA
| | - Zhihong Gong
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Song Yao
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Mark LaBarge
- Department of Population Science, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Rama Natarajan
- Department of Diabetes Complications and Metabolism, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | | | - Christine Ambrosone
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Victoria Seewaldt
- Department of Population Science, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
- Correspondence:
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29
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Franco-Leyva T, Torres OH, Saez Prieto ME, Boera-Carnicero G, Santos Á, Clotet S, Albert-Jares D, El-Ebiary Y, Agustí-Martí M, Casademont J, Juárez C, Martínez-Martínez L. Early differentiated CD28 + CD27 + T lymphocytes as a biomarker for short and long-term outcomes in older patients with pneumonia. J Leukoc Biol 2022; 112:1183-1190. [PMID: 35748037 DOI: 10.1002/jlb.5ma0422-370r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/28/2022] [Accepted: 05/23/2022] [Indexed: 12/24/2022] Open
Abstract
This study tested the hypothesis that a more senescent immune system would predict a worse outcome in older patients hospitalized for community-acquired pneumonia (CAP). CAP has long been responsible for high rates of mortality and readmissions among older people. Although immunosenescence is a key factor in the increased susceptibility to infections, there are no related biomarkers currently available in clinical practice. In this context, the aim of this prospective study was to identify immunosenescence-related biomarkers to predict outcomes in patients older than 65 years hospitalized for CAP. We evaluated 97 patients admitted to our hospital for CAP in 2019 and 2020. All patients were followed for 1 year. Our findings showed that elevated levels of early differentiated CD28+ CD27+ T cells at admission were associated with better short (2 months) and long-term (1 year) outcomes in terms of mortality and readmissions. Early differentiated CD28+ CD27+ CD4+ T cell counts were even better long-term predictors. In conclusion, early differentiated CD28+ CD27+ T cells could be useful biomarkers to identify high-risk older patients with CAP, helping clinicians with risk stratification and follow-up.
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Affiliation(s)
- Teresa Franco-Leyva
- Immunology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Olga H Torres
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Geriatrics Unit, Internal Medicine Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - María Encarnación Saez Prieto
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Geriatrics Unit, Internal Medicine Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | | | - Álvaro Santos
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Geriatrics Unit, Internal Medicine Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Sandra Clotet
- Universitat Autònoma de Barcelona, Barcelona, Spain.,Internal Medicine Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Daniel Albert-Jares
- Immunology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Yasmin El-Ebiary
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Internal Medicine Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | | | - Jordi Casademont
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Internal Medicine Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Cándido Juárez
- Immunology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Laura Martínez-Martínez
- Immunology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
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30
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Kynurenine Pathway Metabolites in the Blood and Cerebrospinal Fluid Are Associated with Human Aging. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5019752. [PMID: 36312896 PMCID: PMC9616658 DOI: 10.1155/2022/5019752] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/24/2022] [Indexed: 12/03/2022]
Abstract
The kynurenine pathway is implicated in aging, longevity, and immune regulation, but longitudinal studies and assessment of the cerebrospinal fluid (CSF) are lacking. We investigated tryptophan (Trp) and downstream kynurenine metabolites and their associations with age and change over time in four cohorts using comprehensive, targeted metabolomics. The study included 1574 participants in two cohorts with repeated metabolite measurements (mean age at baseline 58 years ± 8 SD and 62 ± 10 SD), 3161 community-dwelling older adults (age range 71-74 years), and 109 CSF donors (mean age 73 years ± 7 SD). In the first two cohorts, age was associated with kynurenine (Kyn), quinolinic acid (QA), and the kynurenine to tryptophan ratio (KTR), and inversely with Trp. Consistent with these findings, Kyn, QA, and KTR increased over time, whereas Trp decreased. Similarly, QA and KTR were higher in community-dwelling older adults of age 74 compared to 71, whereas Trp was lower. Kyn and QA were more strongly correlated with age in the CSF compared to serum and increased in a subset of participants with repeated CSF sampling (n = 33) over four years. We assessed associations with frailty and mortality in two cohorts. QA and KTR were most strongly associated with mortality and frailty. Our study provides robust evidence of changes in tryptophan and kynurenine metabolism with human aging and supports links with adverse health outcomes. Our results suggest that aging activates the inflammation and stress-driven kynurenine pathway systemically and in the brain, but we cannot determine whether this activation is harmful or adaptive. We identified a relatively stronger age-related increase of the potentially neurotoxic end-product QA in brain.
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Epidemiological and Cytokine Profile of Patients with Pulmonary and Extrapulmonary Tuberculosis in a Population of the Brazilian Amazon. Microorganisms 2022; 10:microorganisms10102075. [PMID: 36296351 PMCID: PMC9609616 DOI: 10.3390/microorganisms10102075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022] Open
Abstract
Several factors are associated with the development of different clinical forms of tuberculosis (TB). The present study evaluated epidemiological variables and cytokine levels in samples from 89 patients with TB (75 with pulmonary TB and 14 with extrapulmonary TB) and 45 controls. Cytokines were measured by flow cytometry (Human Th1/Th2/Th17 Cytometric Bead Array kit). The TB group had a higher frequency of individuals who were 39 years of age or older, married, with primary education or illiterate and had a lower family income (p < 0.05). All individuals with extrapulmonary TB reported that they were not working, and the main reasons were related to disease symptoms or treatment. The levels of IFN-γ (OR = 4.06) and IL-4 (OR = 2.62) were more likely to be elevated in the TB group (p = 0.05), and IFN-γ levels were lower in patients with extrapulmonary TB compared to those with pulmonary TB (OR = 0.11; p = 0.0050). The ROC curve was applied to investigate the diagnostic accuracy of IFN-γ levels between the different clinical forms of tuberculosis, resulting in high AUC (0.8661; p < 0.0001), sensitivity (93.85%) and specificity median (65.90%), suggesting that IFN-γ levels are useful to differentiate pulmonary TB from extrapulmonary TB. The dysregulation of pro- and anti-inflammatory cytokine levels represent a risk for the development of TB and contribute to the pathogenesis of the disease, especially variation in IFN-γ levels, which may determine protection or risk for extrapulmonary TB.
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Levite M. Neuro faces of beneficial T cells: essential in brain, impaired in aging and neurological diseases, and activated functionally by neurotransmitters and neuropeptides. Neural Regen Res 2022; 18:1165-1178. [PMID: 36453390 PMCID: PMC9838142 DOI: 10.4103/1673-5374.357903] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
T cells are essential for a healthy life, performing continuously: immune surveillance, recognition, protection, activation, suppression, assistance, eradication, secretion, adhesion, migration, homing, communications, and additional tasks. This paper describes five aspects of normal beneficial T cells in the healthy or diseased brain. First, normal beneficial T cells are essential for normal healthy brain functions: cognition, spatial learning, memory, adult neurogenesis, and neuroprotection. T cells decrease secondary neuronal degeneration, increase neuronal survival after central nervous system (CNS) injury, and limit CNS inflammation and damage upon injury and infection. Second, while pathogenic T cells contribute to CNS disorders, recent studies, mostly in animal models, show that specific subpopulations of normal beneficial T cells have protective and regenerative effects in several neuroinflammatory and neurodegenerative diseases. These include Multiple Sclerosis (MS), Alzheimer's disease, Parkinson's disease, Amyotrophic Lateral Sclerosis (ALS), stroke, CNS trauma, chronic pain, and others. Both T cell-secreted molecules and direct cell-cell contacts deliver T cell neuroprotective, neuroregenerative and immunomodulatory effects. Third, normal beneficial T cells are abnormal, impaired, and dysfunctional in aging and multiple neurological diseases. Different T cell impairments are evident in aging, brain tumors (mainly Glioblastoma), severe viral infections (including COVID-19), chronic stress, major depression, schizophrenia, Parkinson's disease, Alzheimer's disease, ALS, MS, stroke, and other neuro-pathologies. The main detrimental mechanisms that impair T cell function are activation-induced cell death, exhaustion, senescence, and impaired T cell stemness. Fourth, several physiological neurotransmitters and neuropeptides induce by themselves multiple direct, potent, beneficial, and therapeutically-relevant effects on normal human T cells, via their receptors in T cells. This scientific field is called "Nerve-Driven Immunity". The main neurotransmitters and neuropeptides that induce directly activating and beneficial effects on naïve normal human T cells are: dopamine, glutamate, GnRH-II, neuropeptide Y, calcitonin gene-related peptide, and somatostatin. Fifth, "Personalized Adoptive Neuro-Immunotherapy". This is a novel unique cellular immunotherapy, based on the "Nerve-Driven Immunity" findings, which was recently designed and patented for safe and repeated rejuvenation, activation, and improvement of impaired and dysfunctional T cells of any person in need, by ex vivo exposure of the person's T cells to neurotransmitters and neuropeptides. Personalized adoptive neuro-immunotherapy includes an early ex vivo personalized diagnosis, and subsequent ex vivo → in vivo personalized adoptive therapy, tailored according to the diagnosis. The Personalized Adoptive Neuro-Immunotherapy has not yet been tested in humans, pending validation of safety and efficacy in clinical trials, especially in brain tumors, chronic infectious diseases, and aging, in which T cells are exhausted and/or senescent and dysfunctional.
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Affiliation(s)
- Mia Levite
- Faculty of Medicine, The Hebrew University of Jerusalem, Campus Ein Karem, Jerusalem, Israel,Institute of Gene Therapy, The Hadassah University Hospital-Ein Karem, Jerusalem, Israel,Correspondence to: Mia Levite, or .
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Liu X, Si F, Bagley D, Ma F, Zhang Y, Tao Y, Shaw E, Peng G. Blockades of effector T cell senescence and exhaustion synergistically enhance antitumor immunity and immunotherapy. J Immunother Cancer 2022; 10:jitc-2022-005020. [PMID: 36192086 PMCID: PMC9535198 DOI: 10.1136/jitc-2022-005020] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Current immunotherapies still have limited successful rates among cancers. It is now recognized that T cell functional state in the tumor microenvironment (TME) is a key determinant for effective antitumor immunity and immunotherapy. In addition to exhaustion, cellular senescence in tumor-infiltrating T cells (TILs) has recently been identified as an important T cell dysfunctional state induced by various malignant tumors. Therefore, a better understanding of the molecular mechanism responsible for T cell senescence in the TME and development of novel strategies to prevent effector T cell senescence are urgently needed for cancer immunotherapy. METHODS Senescent T cell populations in the TMEs in mouse lung cancer, breast cancer, and melanoma tumor models were evaluated. Furthermore, T cell senescence induced by mouse tumor and regulatory T (Treg) cells in vitro was determined with multiple markers and assays, including real-time PCR, flow cytometry, and histochemistry staining. Loss-of-function strategies with pharmacological inhibitors and the knockout mouse model were used to identify the potential molecules and pathways involved in T cell senescence. In addition, melanoma mouse tumor immunotherapy models were performed to explore the synergistical efficacy of antitumor immunity via prevention of tumor-specific T cell senescence combined with anti-programmed death-ligand 1 (anti-PD-L1) checkpoint blockade therapy. RESULTS We report that both mouse malignant tumor cells and Treg cells can induce responder T cell senescence, similar as shown in human Treg and tumor cells. Accumulated senescent T cells also exist in the TME in tumor models of lung cancer, breast cancer and melanoma. Induction of ataxia-telangiectasia mutated protein (ATM)-associated DNA damage is the cause for T cell senescence induced by both mouse tumor cells and Treg cells, which is also regulated by mitogen-activated protein kinase (MAPK) signaling. Furthermore, blockages of ATM-associated DNA damage and/or MAPK signaling pathways in T cells can prevent T cell senescence mediated by tumor cells and Treg cells in vitro and enhance antitumor immunity and immunotherapy in vivo in adoptive transfer T cell therapy melanoma models. Importantly, prevention of tumor-specific T cell senescence via ATM and/or MAPK signaling inhibition combined with anti-PD-L1 checkpoint blockade can synergistically enhance antitumor immunity and immunotherapy in vivo. CONCLUSIONS These studies prove the novel concept that targeting both effector T cell senescence and exhaustion is an effective strategy and can synergistically enhance cancer immunotherapy.
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Affiliation(s)
- Xia Liu
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - Fusheng Si
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - David Bagley
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - Feiya Ma
- Department of Biology, Saint Louis University, Saint Louis, Missouri, USA
| | - Yuanqin Zhang
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - Yan Tao
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - Emily Shaw
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - Guangyong Peng
- Division of Infectious Diseases, Allergy & Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, Missouri, USA,Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
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Singh B, Kumar Rai A. Loss of immune regulation in aged T-cells: A metabolic review to show lack of ability to control responses within the self. Hum Immunol 2022; 83:808-817. [DOI: 10.1016/j.humimm.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 09/19/2022] [Accepted: 10/04/2022] [Indexed: 11/04/2022]
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Iba M, McDevitt RA, Kim C, Roy R, Sarantopoulou D, Tommer E, Siegars B, Sallin M, Kwon S, Sen JM, Sen R, Masliah E. Aging exacerbates the brain inflammatory micro-environment contributing to α-synuclein pathology and functional deficits in a mouse model of DLB/PD. Mol Neurodegener 2022; 17:60. [PMID: 36064424 PMCID: PMC9447339 DOI: 10.1186/s13024-022-00564-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 08/19/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Although ɑ-synuclein (ɑ-syn) spreading in age-related neurodegenerative diseases such as Parkinson's disease (PD) and Dementia with Lewy bodies (DLB) has been extensively investigated, the role of aging in the manifestation of disease remains unclear. METHODS We explored the role of aging and inflammation in the pathogenesis of synucleinopathies in a mouse model of DLB/PD initiated by intrastriatal injection of ɑ-syn preformed fibrils (pff). RESULTS We found that aged mice showed more extensive accumulation of ɑ-syn in selected brain regions and behavioral deficits that were associated with greater infiltration of T cells and microgliosis. Microglial inflammatory gene expression induced by ɑ-syn-pff injection in young mice had hallmarks of aged microglia, indicating that enhanced age-associated pathologies may result from inflammatory synergy between aging and the effects of ɑ-syn aggregation. Based on the transcriptomics analysis projected from Ingenuity Pathway Analysis, we found a network that included colony stimulating factor 2 (CSF2), LPS related genes, TNFɑ and poly rl:rC-RNA as common regulators. CONCLUSIONS We propose that aging related inflammation (eg: CSF2) influences outcomes of pathological spreading of ɑ-syn and suggest that targeting neuro-immune responses might be important in developing treatments for DLB/PD.
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Affiliation(s)
- Michiyo Iba
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Ross A McDevitt
- Mouse Phenotyping Unit, Comparative Medicine Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Changyoun Kim
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Roshni Roy
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Dimitra Sarantopoulou
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Ella Tommer
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Byron Siegars
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Michelle Sallin
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Somin Kwon
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Jyoti Misra Sen
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
- Immunology Program, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, 21224, USA
| | - Ranjan Sen
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
- Immunology Program, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, 21224, USA
| | - Eliezer Masliah
- Laboratory of Neurogenetics, Molecular Neuropathology Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA.
- Division of Neuroscience, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20814, USA.
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Ghamar Talepoor A, Doroudchi M. Immunosenescence in atherosclerosis: A role for chronic viral infections. Front Immunol 2022; 13:945016. [PMID: 36059478 PMCID: PMC9428721 DOI: 10.3389/fimmu.2022.945016] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/26/2022] [Indexed: 01/10/2023] Open
Abstract
Immune system is a versatile and dynamic body organ which offers survival and endurance of human beings in their hostile living environment. However, similar to other cells, immune cells are hijacked by senescence. The ageing immune cells lose their beneficial functions but continue to produce inflammatory mediators which draw other immune and non-immune cells to the senescence loop. Immunosenescence has been shown to be associated with different pathological conditions and diseases, among which atherosclerosis has recently come to light. There are common drivers of both immunosenescence and atherosclerosis; e.g. inflammation, reactive oxygen species (ROS), chronic viral infections, genomic damage, oxidized-LDL, hypertension, cigarette smoke, hyperglycaemia, and mitochondrial failure. Chronic viral infections induce inflammaging, sustained cytokine signaling, ROS generation and DNA damage which are associated with atherogenesis. Accumulating evidence shows that several DNA and RNA viruses are stimulators of immunosenescence and atherosclerosis in an interrelated network. DNA viruses such as CMV, EBV and HBV upregulate p16, p21 and p53 senescence-associated molecules; induce inflammaging, metabolic reprogramming of infected cells, replicative senescence and telomere shortening. RNA viruses such as HCV and HIV induce ROS generation, DNA damage, induction of senescence-associated secretory phenotype (SASP), metabolic reprogramming of infected cells, G1 cell cycle arrest, telomere shortening, as well as epigenetic modifications of DNA and histones. The newly emerged SARS-CoV-2 virus is also a potent inducer of cytokine storm and SASP. The spike protein of SARS-CoV-2 promotes senescence phenotype in endothelial cells by augmenting p16, p21, senescence-associated β-galactosidase (SA-β-Gal) and adhesion molecules expression. The impact of SARS-CoV-2 mega-inflammation on atherogenesis, however, remains to be investigated. In this review we focus on the common processes in immunosenescence and atherogenesis caused by chronic viral infections and discuss the current knowledge on this topic.
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Effect of Cytomegalovirus on the Immune System: Implications for Aging and Mental Health. Curr Top Behav Neurosci 2022; 61:181-214. [PMID: 35871707 DOI: 10.1007/7854_2022_376] [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] [Indexed: 10/16/2022]
Abstract
Human cytomegalovirus (HCMV) is a major modulator of the immune system leading to long-term changes in T-lymphocytes, macrophages, and natural killer (NK) cells among others. Perhaps because of this immunomodulatory capacity, HCMV infection has been linked with a host of deleterious effects including accelerated immune aging (premature mortality, increased expression of immunosenescence-linked markers, telomere shortening, speeding-up of epigenetic "clocks"), decreased vaccine immunogenicity, and greater vulnerability to infectious diseases (e.g., tuberculosis) or infectious disease-associated pathology (e.g., HIV). Perhaps not surprisingly given the long co-evolution between HCMV and humans, the virus has also been associated with beneficial effects, such as increased vaccine responsiveness, heterologous protection against infections, and protection against relapse in the context of leukemia. Here, we provide an overview of this literature. Ultimately, we focus on one other deleterious effect of HCMV, namely the emerging literature suggesting that HCMV plays a pathophysiological role in psychiatric illness, particularly depression and schizophrenia. We discuss this literature through the lens of psychological stress and inflammation, two well-established risk factors for psychiatric illness that are also known to predispose to reactivation of HCMV.
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Klopack ET, Thyagarajan B, Faul JD, Meier HCS, Ramasubramanian R, Kim JK, Crimmins EM. Socioeconomic status and immune aging in older US adults in the health and retirement study. BIODEMOGRAPHY AND SOCIAL BIOLOGY 2022; 67:187-202. [PMID: 36472376 PMCID: PMC9869898 DOI: 10.1080/19485565.2022.2149465] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Socioeconomic and demographic factors including educational attainment, race and ethnicity, and childhood socioeconomic status (SES) are powerful predictors of inequalities in aging, morbidity, and mortality. Immune aging, including accumulation of late-differentiated, senescent-like lymphocytes and lower levels of naïve lymphocytes, may play a role in the development of the age-related health inequalities. This study used nationally representative data from more than 9,000 US adults from the Health and Retirement Study to investigate associations between educational attainment, race and ethnicity, and childhood SES and lymphocyte percentages. Respondents with lower educational attainment, Hispanic adults, and those who had a parent with less than a high school education had lymphocyte percentages consistent with more immune aging compared to those with greater educational attainment, non-Hispanic White adults, and respondents who had parents with a high school education, respectively. Associations between education, Hispanic ethnicity, and parents' education and late differentiated senescent-like T lymphocytes (TemRA) and B cells were largely driven by cytomegalovirus (CMV), suggesting it is a factor in observed SES inequalities in immunosenescence. Naïve T lymphocytes may be particularly affected by socioeconomic position and may therefore be of particular interest to research interested in inequalities in health and aging.
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Affiliation(s)
- Eric T. Klopack
- Leonard Davis School of Gerontology, University of Southern California
| | - Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, University of Minnesota
| | | | | | - Ramya Ramasubramanian
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health
| | - Jung Ki Kim
- Leonard Davis School of Gerontology, University of Southern California
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Klopack ET, Crimmins EM, Cole SW, Seeman TE, Carroll JE. Social stressors associated with age-related T lymphocyte percentages in older US adults: Evidence from the US Health and Retirement Study. Proc Natl Acad Sci U S A 2022; 119:e2202780119. [PMID: 35696572 PMCID: PMC9231620 DOI: 10.1073/pnas.2202780119] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/25/2022] [Indexed: 12/31/2022] Open
Abstract
Exposure to stress is a risk factor for poor health and accelerated aging. Immune aging, including declines in naïve and increases in terminally differentiated T cells, plays a role in immune health and tissue specific aging, and may contribute to elevated risk for poor health among those who experience high psychosocial stress. Past data have been limited in estimating the contribution of life stress to the development of accelerated immune aging and investigating mediators such as lifestyle and cytomegalovirus (CMV) infection. This study utilizes a national sample of 5,744 US adults over age 50 to assess the relationship of social stress (viz., everyday discrimination, stressful life events, lifetime discrimination, life trauma, and chronic stress) with flow cytometric estimates of immune aging, including naïve and terminally differentiated T cell percentages and the ratio of CD4+ to CD8+ cells. Experiencing life trauma and chronic stress was related to a lower percentage of CD4+ naïve cells. Discrimination and chronic stress were each associated with a greater percentage of terminally differentiated CD4+ cells. Stressful life events, high lifetime discrimination, and life trauma were related to a lower percentage of CD8+ naïve cells. Stressful life events, high lifetime discrimination, and chronic stress were associated with a higher percentage of terminally differentiated CD8+ cells. High lifetime discrimination and chronic stress were related to a lower CD4+:CD8+ ratio. Lifestyle factors and CMV seropositivity partially reduced these effects. Results identify psychosocial stress as a contributor to accelerating immune aging by decreasing naïve and increasing terminally differentiated T cells.
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Affiliation(s)
- Eric T. Klopack
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089
| | - Eileen M. Crimmins
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089
| | - Steve W. Cole
- Cousins Center for Psychoneuroimmunology, Jane & Terry Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA 90095
| | - Teresa E. Seeman
- Division of Geriatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Judith E. Carroll
- Cousins Center for Psychoneuroimmunology, Department of Psychiatry & Biobehavioral Sciences, Jane & Terry Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA 90095
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Puspitasari YM, Ministrini S, Schwarz L, Karch C, Liberale L, Camici GG. Modern Concepts in Cardiovascular Disease: Inflamm-Aging. Front Cell Dev Biol 2022; 10:882211. [PMID: 35663390 PMCID: PMC9158480 DOI: 10.3389/fcell.2022.882211] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/13/2022] [Indexed: 11/18/2022] Open
Abstract
The improvements in healthcare services and quality of life result in a longer life expectancy and a higher number of aged individuals, who are inevitably affected by age-associated cardiovascular (CV) diseases. This challenging demographic shift calls for a greater effort to unravel the molecular mechanisms underlying age-related CV diseases to identify new therapeutic targets to cope with the ongoing aging "pandemic". Essential for protection against external pathogens and intrinsic degenerative processes, the inflammatory response becomes dysregulated with aging, leading to a persistent state of low-grade inflammation known as inflamm-aging. Of interest, inflammation has been recently recognized as a key factor in the pathogenesis of CV diseases, suggesting inflamm-aging as a possible driver of age-related CV afflictions and a plausible therapeutic target in this context. This review discusses the molecular pathways underlying inflamm-aging and their involvement in CV disease. Moreover, the potential of several anti-inflammatory approaches in this context is also reviewed.
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Affiliation(s)
| | - Stefano Ministrini
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
- Internal Medicine, Angiology and Atherosclerosis, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Lena Schwarz
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Caroline Karch
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Luca Liberale
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino Genoa—Italian Cardiovascular Network, Genoa, Italy
| | - Giovanni G. Camici
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland
- Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
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Klotz SA, Egurrola C, Love M, Miller MN, Bradley N, Smith SN, Najafi B, Ahmad N. Phenotypic frailty in people living with HIV is not correlated with age or immunosenescence. Int J STD AIDS 2022; 33:597-603. [PMID: 35377254 PMCID: PMC9024027 DOI: 10.1177/09564624221091455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background It has been hypothesized that HIV-1 infection prematurely “ages” individuals phenotypically and immunologically. We measured phenotypic frailty and immune “aging” markers on T-cells of people living with HIV on long term, suppressive anti-retroviral therapy (ART) to determine if there is an association between frailty and immunosenescence. Methods Thirty-seven (37) community-dwelling people living with HIV were measured for frailty using a sensor-based frailty meter that quantifies weakness, slowness, rigidity, and exhaustion. An immunological profile of the patients’ CD4+ and CD8+ T-cell expression of cell surface proteins and cytokines was performed (n = 20). Results Phenotypic frailty prevalence was 19% (7/37) and correlated weakly with the number of past medical events accrued by the patient (r = 0.34, p = .04). There was no correlation of frailty with age, sex, prior AIDS diagnosis or HIV-1 viral load, or IFN-γ expression by CD4+ or CD8+ T-cells. There were more immune competent (CD28+ CD57−) cells than exhausted/senescent (CD28− CD57+) T cells. Conclusion Frailty in people living with HIV on long term, suppressive ART did not correlate with aging or T cell markers of exhaustion or immunosenescence.
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Affiliation(s)
- Stephen A Klotz
- Department of Medicine, 22165University of Arizona Medical Center - University Campus, Tucson, AZ, USA
| | - Cesar Egurrola
- Department of Medicine, 22165University of Arizona Medical Center - University Campus, Tucson, AZ, USA
| | - Maria Love
- Department of Immunology, College of Medicine, 242724University of Arizona, Tucson, AZ, USA
| | - Mary N Miller
- Department of Medicine, 22165University of Arizona Medical Center - University Campus, Tucson, AZ, USA
| | - Nicole Bradley
- Department of Immunology, College of Medicine, 242724University of Arizona, Tucson, AZ, USA
| | - Shannon N Smith
- Department of Medicine, 22165University of Arizona Medical Center - University Campus, Tucson, AZ, USA
| | - Bijan Najafi
- AZ and Department of Surgery, 3989Baylor College of Medicine, Houston, TX, USA
| | - Nafees Ahmad
- Department of Immunology, College of Medicine, 242724University of Arizona, Tucson, AZ, USA
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Vaccination of Elderly People Affected by Chronic Diseases: A Challenge for Public Health. Vaccines (Basel) 2022; 10:vaccines10050641. [PMID: 35632397 PMCID: PMC9147219 DOI: 10.3390/vaccines10050641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 12/25/2022] Open
Abstract
Elderly people have a limited regenerative capacity and are more susceptible to disease, syndromes, injuries, and illnesses than younger adults [...]
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Wang X, Wang D, Du J, Wei Y, Song R, Wang B, Qiu S, Li B, Zhang L, Zeng Y, Zhao H, Kong Y. High Levels of CD244 Rather Than CD160 Associate With CD8 + T-Cell Aging. Front Immunol 2022; 13:853522. [PMID: 35386693 PMCID: PMC8977780 DOI: 10.3389/fimmu.2022.853522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/28/2022] [Indexed: 12/05/2022] Open
Abstract
Aging leads to functional dysregulation of the immune system, especially T cell defects. Previous studies have shown that the accumulation of co-inhibitory molecules plays an essential role in both T cell exhaustion and aging. In the present study, we showed that CD244 and CD160 were both up-regulated on CD8+ T cells of elderly individuals. CD244+CD160- CD8+ T cells displayed the increased activity of β-GAL, higher production of cytokines, and severe metabolic disorders, which were characteristics of immune aging. Notably, the functional dysregulation associated with aging was reversed by blocking CD244 instead of CD160. Meanwhile, CD244+CD160+ CD8+ T cells exhibited features of exhaustion, including lower levels of cytokine, impaired proliferation, and intrinsic transcriptional regulation, compared to CD244+CD160- population. Collectively, our findings demonstrated that CD244 rather than CD160 acts as a prominent regulator involved in T cell aging, providing a solid therapeutic target to improve disorders and comorbidities correlated to immune system aging.
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Affiliation(s)
- Xinyue Wang
- Peking University Ditan Teaching Hospital, Beijing, China.,Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Infectious Diseases, Beijing, China.,National Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Di Wang
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Infectious Diseases, Beijing, China.,National Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Juan Du
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Infectious Diseases, Beijing, China.,National Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Yuqing Wei
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Infectious Diseases, Beijing, China.,National Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Rui Song
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Beibei Wang
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Infectious Diseases, Beijing, China.,National Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Shuang Qiu
- Department of Laboratory, Beijing Ji Shui Tan Hospital, Beijing, China
| | - Bei Li
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Leidan Zhang
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Yongqin Zeng
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Hongxin Zhao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Yaxian Kong
- Peking University Ditan Teaching Hospital, Beijing, China.,Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Infectious Diseases, Beijing, China.,National Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
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Fang F, Xie S, Chen M, Li Y, Yue J, Ma J, Shu X, He Y, Xiao W, Tian Z. Advances in NK cell production. Cell Mol Immunol 2022; 19:460-481. [PMID: 34983953 PMCID: PMC8975878 DOI: 10.1038/s41423-021-00808-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 11/06/2021] [Indexed: 12/12/2022] Open
Abstract
Immunotherapy based on natural killer (NK) cells is a promising approach for treating a variety of cancers. Unlike T cells, NK cells recognize target cells via a major histocompatibility complex (MHC)-independent mechanism and, without being sensitized, kill the cells directly. Several strategies for obtaining large quantities of NK cells with high purity and high cytotoxicity have been developed. These strategies include the use of cytokine-antibody fusions, feeder cells or membrane particles to stimulate the proliferation of NK cells and enhance their cytotoxicity. Various materials, including peripheral blood mononuclear cells (PBMCs), umbilical cord blood (UCB), induced pluripotent stem cells (iPSCs) and NK cell lines, have been used as sources to generate NK cells for immunotherapy. Moreover, genetic modification technologies to improve the proliferation of NK cells have also been developed to enhance the functions of NK cells. Here, we summarize the recent advances in expansion strategies with or without genetic manipulation of NK cells derived from various cellular sources. We also discuss the closed, automated and GMP-controlled large-scale expansion systems used for NK cells and possible future NK cell-based immunotherapy products.
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Affiliation(s)
- Fang Fang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
- Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei, 230027, China
| | - Siqi Xie
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Minhua Chen
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Yutong Li
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Jingjing Yue
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Jie Ma
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Xun Shu
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Yongge He
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China
| | - Weihua Xiao
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China.
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China.
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China.
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China.
- Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei, 230027, China.
| | - Zhigang Tian
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China.
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China.
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China.
- Engineering Technology Research Center of Biotechnology Drugs Anhui, University of Science and Technology of China, Hefei, 230027, China.
- Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei, 230027, China.
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Schulze Lammers FC, Bonifacius A, Tischer-Zimmermann S, Goudeva L, Martens J, Lepenies B, von Karpowitz M, Einecke G, Beutel G, Skripuletz T, Blasczyk R, Beier R, Maecker-Kolhoff B, Eiz-Vesper B. Antiviral T-Cell Frequencies in a Healthy Population: Reference Values for Evaluating Antiviral Immune Cell Profiles in Immunocompromised Patients. J Clin Immunol 2022; 42:546-558. [PMID: 34989946 PMCID: PMC9015970 DOI: 10.1007/s10875-021-01205-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/23/2021] [Indexed: 11/30/2022]
Abstract
Viral infections and reactivations are major causes of morbidity and mortality after hematopoietic stem cell (HSCT) and solid organ transplantation (SOT) as well as in patients with immunodeficiencies. Latent herpesviruses (e.g., cytomegalovirus, Epstein-Barr virus, and human herpesvirus 6), lytic viruses (e.g., adenovirus), and polyomaviruses (e.g., BK virus, JC virus) can cause severe complications. Antiviral drugs form the mainstay of treatment for viral infections and reactivations after transplantation, but they have side effects and cannot achieve complete viral clearance without prior reconstitution of functional antiviral T-cell immunity. The aim of this study was to establish normal ranges for virus-specific T-cell (VST) frequencies in healthy donors. Such data are needed for better interpretation of VST frequencies observed in immunocompromised patients. Therefore, we measured the frequencies of VSTs against 23 viral protein-derived peptide pools from 11 clinically relevant human viruses in blood from healthy donors (n = 151). Specifically, we determined the VST frequencies by interferon-gamma enzyme-linked immunospot assay and classified their distribution according to age and gender to allow for a more specific evaluation and prediction of antiviral immune responses. The reference values established here provide an invaluable tool for immune response evaluation, intensity of therapeutic drugs and treatment decision-making in immunosuppressed patients. This data should make an important contribution to improving the assessment of immune responses in immunocompromised patients.
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Affiliation(s)
- Friederike C Schulze Lammers
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany
| | - Agnes Bonifacius
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany
| | - Sabine Tischer-Zimmermann
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany
| | - Lilia Goudeva
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany
| | - Jörg Martens
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany
| | - Bernd Lepenies
- Institute for Immunology & Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, DE, Germany
| | | | - Gunilla Einecke
- Department of Nephrology, Hannover Medical School, Hannover, DE, Germany
| | - Gernot Beutel
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, DE, Germany
| | - Thomas Skripuletz
- Department of Neurology, Hannover Medical School, Hannover, DE, Germany
| | - Rainer Blasczyk
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany
| | - Rita Beier
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, DE, Germany
| | - Britta Maecker-Kolhoff
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, DE, Germany
| | - Britta Eiz-Vesper
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, DE, Germany.
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Zhang S, Yang Z, Li ZN, Chen ZL, Yue SJ, Fu RJ, Xu DQ, Zhang S, Tang YP. Are Older People Really More Susceptible to SARS-CoV-2? Aging Dis 2022; 13:1336-1347. [PMID: 36186126 PMCID: PMC9466979 DOI: 10.14336/ad.2022.0130] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/30/2022] [Indexed: 12/15/2022] Open
Abstract
Since the outbreak, COVID-19 has spread rapidly across the globe due to its high infectivity and lethality. Age appears to be one of the key factors influencing the status and progression of SARS-CoV-2 infection, as multiple reports indicated that the majority of COVID-19 infections and severe cases are elderly. Most people simply assume that the elderly are more susceptible to SARS-CoV-2 than the young, but the mechanism behind it is still open to question. The older and younger people are at similar risk of infection because their infection process is the same and they must be exposed to the virus first. However, whether they will get sick after exposure to the virus and how their disease progresses depend on their immune mechanisms. In older populations, inflammation and immune aging reduce their ability to resist SARS-CoV-2 infection. Meanwhile, under the influence of comorbidities, ACE2 receptor and various cytokines undergo corresponding changes, thus accelerating the entry, replication, and transmission of SARS-CoV-2 in the body, promoting disease progression, and leading to severe illness and even death. In addition, the relatively fragile mental state of the elderly can also affect their timely recovery from COVID-19. Therefore, once older people are infected with SARS-CoV-2, they are more prone to severe illness and death with a poor prognosis, and they should strengthen protection to avoid exposure to the virus.
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Affiliation(s)
- Shuo Zhang
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
- School of Clinical Medicine (Guang’anmen Hospital), Beijing University of Chinese Medicine, Beijing, China.
| | - Zhen Yang
- School of Public Health, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
| | - Zhuo-Ning Li
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
| | - Zhen-Lin Chen
- International Programs Office, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
- Correspondence should be addressed to: Dr. Zhen-Lin Chen, International Programs Office, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China. ; Dr. Yu-Ping Tang, Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China. .
| | - Shi-Jun Yue
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
| | - Rui-Jia Fu
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
| | - Ding-Qiao Xu
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
| | - Sai Zhang
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
| | - Yu-Ping Tang
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, and State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Research, and Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China.
- Correspondence should be addressed to: Dr. Zhen-Lin Chen, International Programs Office, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China. ; Dr. Yu-Ping Tang, Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, Shaanxi University of Chinese Medicine, Xi’an, Shaanxi, China. .
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Bai G, Cui N, Wang H, Cheng W, Han W, Chen J, Guo Y, Wang F. T-lymphocyte subtyping: an early warning and a potential prognostic indicator of active cytomegalovirus infection in patients with sepsis. Immunol Cell Biol 2022; 100:777-790. [PMID: 36106958 PMCID: PMC9828035 DOI: 10.1111/imcb.12586] [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: 07/03/2022] [Revised: 09/09/2022] [Accepted: 09/14/2022] [Indexed: 01/12/2023]
Abstract
Cytomegalovirus (CMV) infection is very common in patients suffering from sepsis and may cause poor prognosis. To explore the relationship between immune status of patients with sepsis and CMV infection, we assessed T lymphocyte subtyping and other commonly used clinical parameters in patients with sepsis upon admission to the intensive care unit (ICU) and evaluated their potential impact on diagnosis and outcomes of active CMV infection. In our study, 82 of 599 patients with sepsis were diagnosed with active CMV infection. The 28-day mortality was higher in active CMV-infected than nonactive CMV-infected patients (20.7% versus 9.9%); 51of 82 active CMV-infected patients with sepsis were assessed to have CMV-DNA-negative conversion, while 31 were persistently positive for CMV DNA. Higher CD8+ CD28+ T-cell counts at presentation were associated with CMV-DNA-negative conversion and lower 28-day mortality. The CMV-DNA-negative conversion and 28-day mortality of active CMV-infected patients with sepsis could be predicted using cutoff values of 151 (74.5% sensitivity and 87.1% specificity) and 64.5 (52.9% sensitivity and 92.3% specificity) CD8+ CD28+ T cells mL-1 at ICU admission, respectively. Higher CD8+ CD28+ T-cell count was significantly associated with active CMV infection, higher CMV-DNA-negative conversion and lower 28-day mortality, which may be a potential marker for early warning of active CMV infection and outcome prediction.
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Affiliation(s)
- Guangxu Bai
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina,Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina
| | - Na Cui
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina,Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina,Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical ScienceBeijingChina
| | - Hao Wang
- Department of Critical Care MedicineBeijing Jishuitan HospitalBeijingChina
| | - Wei Cheng
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina,Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina
| | - Wen Han
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina,Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina
| | - Jianwei Chen
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina,Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina
| | - Ye Guo
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical ScienceBeijingChina
| | - Fei Wang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical CollegeChinese Academy of Medical ScienceBeijingChina
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Reference ranges of T lymphocyte subsets by single-platform among healthy population in southwest China. BMC Immunol 2021; 22:80. [PMID: 34930155 PMCID: PMC8690880 DOI: 10.1186/s12865-021-00474-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 12/13/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Appropriate reference ranges of T lymphocyte subsets are essential for immune status evaluation of patients with immunological diseases. We aim to establish the age- and sex-related reference intervals of T lymphocyte subsets by single-platform for the southwest China population using the indirect method with the data resulting from 53,822 cases of periodic health examination individuals in the Laboratory Information System (LIS) of West China Hospital from 2018 to 2020. METHODS We used the Box-Cox conversion combined with the Tukey method to normalize the data and eliminate the outliers, and the nonparametric method to estimate the 95% distribution reference intervals. RESULTS We initially established the reference ranges of T lymphocyte subsets by single-platform among healthy population in southwest China by indirect method (See text for details). Using the standard normal deviate test (z-test) suggested by Harris and Boyd according to CLSI EP28-A3C, which is more scientific, we found the reference ranges of T lymphocyte subsets should be differentiated by ages and genders since the reference ranges of T lymphocyte subsets by single-platform in different ages and genders are significantly different. CONCLUSIONS We further demonstrated the absolute count of CD3 + T cell, CD3 + CD4 + T cell, CD3 + CD8 + T cell decreased with aging, which is more marked in men and CD3 + CD8 + T cell count, and the obtained reference intervals were superior to the reference intervals derived from the reagent specification currently in use.
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49
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Weinberger B. Vaccines and Vaccination against SARS-CoV-2: Considerations for the Older Population. Vaccines (Basel) 2021; 9:1435. [PMID: 34960181 PMCID: PMC8704374 DOI: 10.3390/vaccines9121435] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/23/2021] [Accepted: 12/02/2021] [Indexed: 12/23/2022] Open
Abstract
Age is among the most prominent risk factors for developing severe COVID-19 disease, and therefore older adults are a major target group for vaccination against SARS-CoV-2. This review focusses on age-associated aspects of COVID-19 vaccines and vaccination strategies, and summarizes data on immunogenicity, efficacy and effectiveness of the four COVID-19 vaccines, which are licensed in the US and/or Europe; namely, the two mRNA vaccines by BioNTech/Pfizer (BNT162b2) and Moderna (mRNA-1273), and the adenovector vaccines developed by AstraZeneca/University Oxford (ChAdOx1-nCoV-19, AZD1222) and Janssen/Johnson&Johnson (Ad26.COV2-S), respectively. After very high protection rates in the first months after vaccination even in the older population, effectiveness of the vaccines, particularly against asymptomatic infection and mild disease, declined at later time points and with the emergence of virus variants. Many high-income countries have recently started administration of additional doses to older adults and other high-risk groups, whereas other parts of the world are still struggling to acquire and distribute vaccines for primary vaccination. Other vaccines are available in other countries and clinical development for more vaccine candidates is ongoing, but a complete overview of COVID-19 vaccine development is beyond the scope of this article.
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Affiliation(s)
- Birgit Weinberger
- Institute for Biomedical Aging Research, Universität Innsbruck, 6020 Innsbruck, Austria
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50
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Hu C, Zhang K, Jiang F, Wang H, Shao Q. Epigenetic modifications in thymic epithelial cells: an evolutionary perspective for thymus atrophy. Clin Epigenetics 2021; 13:210. [PMID: 34819170 PMCID: PMC8612001 DOI: 10.1186/s13148-021-01197-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/08/2021] [Indexed: 02/06/2023] Open
Abstract
Background The thymic microenvironment is mainly comprised of thymic epithelial cells, the cytokines, exosomes, surface molecules, and hormones from the cells, and plays a vital role in the development, differentiation, maturation and homeostasis of T lymphocytes. However, the thymus begins to degenerate as early as the second year of life and continues through aging in human beings, leading to a decreased output of naïve T cells, the limited TCR diversity and an expansion of monoclonal memory T cells in the periphery organs. These alternations will reduce the adaptive immune response to tumors and emerging infectious diseases, such as COVID-19, also it is easier to suffer from autoimmune diseases in older people. In the context of global aging, it is important to investigate and clarify the causes and mechanisms of thymus involution. Main body Epigenetics include histone modification, DNA methylation, non-coding RNA effects, and chromatin remodeling. In this review, we discuss how senescent thymic epithelial cells determine and control age-related thymic atrophy, how this process is altered by epigenetic modification. How the thymus adipose influences the dysfunctions of the thymic epithelial cells, and the prospects of targeting thymic epithelial cells for the treatment of thymus atrophy. Conclusion Epigenetic modifications are emerging as key regulators in governing the development and senescence of thymic epithelial cells. It is beneficial to re-establish effective thymopoiesis, identify the potential therapeutic strategy and rejuvenate the immune function in the elderly.
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Affiliation(s)
- Cexun Hu
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, People's Republic of China.,Department of Immunology, Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, No. 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People's Republic of China
| | - Keyu Zhang
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, People's Republic of China.,Department of Immunology, Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, No. 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People's Republic of China
| | - Feng Jiang
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, People's Republic of China.,Department of Immunology, Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, No. 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People's Republic of China
| | - Hui Wang
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, People's Republic of China. .,Department of Immunology, Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, No. 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People's Republic of China.
| | - Qixiang Shao
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, People's Republic of China. .,Department of Immunology, Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, No. 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People's Republic of China. .,Jiangsu College of Nursing, School of Medical Science and Laboratory Medicine, Huai'an, 223002, Jiangsu, People's Republic of China.
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