1
|
Watanabe M, Davidson L, Smith P, Castellucio PF, Jergovic M, Uhrlaub JL, Smithey MJ, Fantry LE, Dechambre B, Wilson RC, Knox KC, Ren J, Stowe RP, Weinstock G, Twigg H, Nikolich JŽ. Anti-cytomegalovirus antibody levels stratify human immune profiles across the lifespan. GeroScience 2024; 46:4225-4242. [PMID: 38512581 PMCID: PMC11336022 DOI: 10.1007/s11357-024-01124-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024] Open
Abstract
Human cytomegalovirus (hCMV) is a ubiquitous latent persistent herpesvirus infecting 60-90% of the population worldwide. hCMV carriage in immunocompetent people is asymptomatic; thus, hCMV can be considered a component of normative aging. However, hCMV powerfully modulates many features of the immune, and likely other, systems and organs. Questions remain as to how hCMV carriage affects the human host. We used anti-CMV antibody titers as a stratifying criterion to examine the impact of "intensity" of hCMV infection as a potential biomarker of aging, inflammation, and immune homeostasis in a cohort of 247 participants stratified into younger (21-40 years) and older (> 65 years of age) groups. We showed that anti-CMV antibody titers increased with age and directly correlated to increased levels of soluble tumor necrosis factor (sTNFR) I in younger but not older participants. CD8 + cell numbers were reduced in the older group due to the loss in CD8 + T naïve (Tn) cells. In CMV carriers and, in particular, in anti-CMV Ab-high participants, this loss was mitigated or reversed by an increase in the numbers of CD8 + T effector memory (Tem) and T effector memory reexpressing CD45RA (Temra) cells. Analysis of CD38, HLA-DR, and CD57 expression revealed subset (CD4 or CD8)-specific changes that correlated with anti-CMV Ab levels. In addition, anti-CMV Ab levels predicted anti-CMV CD8 T cell responsiveness to different CMV open reading frames (ORFs) selectively in older participants, which correlated to the transcriptional order of expression of specific CMV ORFs. Implications of these results for the potential predictive value of anti-CMV Ab titers during aging are discussed.
Collapse
Affiliation(s)
- Makiko Watanabe
- Department of Immunobiology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
- Arizona Center On Aging, University of Arizona College of Medicine-Tucson, 1501 N. Campbell Ave, P.O. Box 245221, Tucson, AZ, 85724, USA
| | - Lisa Davidson
- Department of Immunobiology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
- Arizona Center On Aging, University of Arizona College of Medicine-Tucson, 1501 N. Campbell Ave, P.O. Box 245221, Tucson, AZ, 85724, USA
| | - Patricia Smith
- Division of Pulmonary Medicine, Department of Medicine, Indiana University College of Medicine, Bloomington, IN, USA
| | - Peter F Castellucio
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Mladen Jergovic
- Department of Immunobiology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
- Arizona Center On Aging, University of Arizona College of Medicine-Tucson, 1501 N. Campbell Ave, P.O. Box 245221, Tucson, AZ, 85724, USA
| | - Jennifer L Uhrlaub
- Department of Immunobiology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
- Arizona Center On Aging, University of Arizona College of Medicine-Tucson, 1501 N. Campbell Ave, P.O. Box 245221, Tucson, AZ, 85724, USA
| | - Megan J Smithey
- Department of Immunobiology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
- Arizona Center On Aging, University of Arizona College of Medicine-Tucson, 1501 N. Campbell Ave, P.O. Box 245221, Tucson, AZ, 85724, USA
| | - Lori E Fantry
- Division of Infectious Diseases, Department of Medicine, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
| | - Brett Dechambre
- Division of Infectious Diseases, Department of Medicine, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA
- Arizona Department of Health Services, Phoenix, AZ, USA
| | - Rachel C Wilson
- Division of Pulmonary Medicine, Department of Medicine, Indiana University College of Medicine, Bloomington, IN, USA
| | - Kenneth C Knox
- Department of Medicine, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Jie Ren
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, IN, USA
| | | | | | - Homer Twigg
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Janko Ž Nikolich
- Department of Immunobiology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA.
- Arizona Center On Aging, University of Arizona College of Medicine-Tucson, 1501 N. Campbell Ave, P.O. Box 245221, Tucson, AZ, 85724, USA.
| |
Collapse
|
2
|
Souza MRD, Garcia ALH, Dalberto D, Picinini J, Touguinha LBA, Salvador M, da Silva J. Multiple factors influence telomere length and DNA damage in individuals environmentally exposed to a coal-burning power plant. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 898:503793. [PMID: 39147445 DOI: 10.1016/j.mrgentox.2024.503793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 06/27/2024] [Accepted: 07/04/2024] [Indexed: 08/17/2024]
Abstract
Coal is a mixture of several chemicals, many of which have mutagenic and carcinogenic effects and are a key contributor to the global burden of mortality and disease. Previous studies suggest that coal is related to telomeric shortening in individuals occupationally exposed, however little is known about the effects of mining and burning coal on the telomeres of individuals living nearby. Therefore, the primary objective of this investigation was to assess the impact of proximity to coal power plants and coal mines on the genomic instability of individuals environmentally exposed, while also exploring potential associations with individual characteristics, oxidative stress, inflammatory responses, and the presence of inorganic elements. This study involved 80 men participants from three cities around a thermoelectric power plant and one city unexposed to coal and byproducts. DNA was extracted from peripheral blood samples obtained from each participant, and the telomeres length (TL) was assessed using quantitative real-time polymerase chain reaction (qPCR) methodology. No significant difference was observed between exposed individuals (6227 ± 2884 bp) when compared to the unexposed group (5638 ± 2452 bp). Nevertheless, TL decrease was associated with age and risk for cardiovascular disease; and longer TL was found to be linked with increased concentrations of silicon and phosphorus in blood samples. No correlations were observed between TL with comet assay (visual score), micronucleus test, oxidative stress, and inflammatory results. Additional research is required to ascertain the potential correlation between these changes and the onset of diseases and premature mortality.
Collapse
Affiliation(s)
- Melissa Rosa de Souza
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA) and LaSalle University (UniLaSalle), Avenida Farroupilha, 8001 Bairro São José, Canoas, RS CEP 92425-900, Brazil.
| | - Ana Letícia Hilário Garcia
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA) and LaSalle University (UniLaSalle), Avenida Farroupilha, 8001 Bairro São José, Canoas, RS CEP 92425-900, Brazil
| | - Daiana Dalberto
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA) and LaSalle University (UniLaSalle), Avenida Farroupilha, 8001 Bairro São José, Canoas, RS CEP 92425-900, Brazil
| | - Juliana Picinini
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA) and LaSalle University (UniLaSalle), Avenida Farroupilha, 8001 Bairro São José, Canoas, RS CEP 92425-900, Brazil
| | | | - Mirian Salvador
- Laboratory of Oxidative Stress and Antioxidants, Institute of Biotechnology, University of Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA) and LaSalle University (UniLaSalle), Avenida Farroupilha, 8001 Bairro São José, Canoas, RS CEP 92425-900, Brazil.
| |
Collapse
|
3
|
Reed RG, Hillmann AR, Nation M, Braksator S, Sigler K. Remote dried blood spot collection for inflammatory markers in older adults is feasible, reliable, and valid. Brain Behav Immun 2024; 120:545-553. [PMID: 38971206 DOI: 10.1016/j.bbi.2024.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 05/24/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024] Open
Abstract
Dried blood spots (DBS) provide a minimally invasive method to assess inflammatory markers and can be collected remotely at-home or in-person in the lab. However, there is a lack of methodological information comparing these different collection methods and in older adults. We investigated the feasibility (including adherence, yield, quality, and participant preferences) and measurement properties (reliability, validity) of remotely collected DBS inflammatory markers in older adults. Participants (N = 167, mean age = 72, range: 60-96 years) collected their own DBS (finger prick on filter paper) during three remote interviews over ∼ 6 months. Within 4-5 days on average of their last remote interview, a subset of 41 participants also attended an in-person lab visit that included a researcher-collected DBS sample, venous blood draw, and survey to assess participant preferences of DBS collection. DBS and venous blood were assayed for CRP, IL-6, and TNF-α. Adherence: 98% of expected DBS samples (493 out of 501) were completed and mailed back to the lab. Yield: 97% of DBS samples were sufficient for all assays. Quality: On average, 0.80 fewer optimal spots (60uL of blood that filled the entire circle) were obtained remotely vs. in-person (p = 0.013), but the number of useable or better spots (at least 30-40uL of blood) did not differ (p = 0.89). Preference: A slight majority of participants (54%) preferred in-person DBS collection. Reliability: DBS test-retest reliabilities were good: CRP (ICC = 0.74), IL-6 (ICC = 0.76), and TNF-α (ICC = 0.70). Validity: Inflammatory levels from DBS correlated strongly with levels from venous blood (r = 0.60-0.99) and correlated as expected with sociodemographic and physical health and function variables. Older adults can remotely collect their own DBS to acquire reliable and valid inflammatory data. Remote DBS collection is highly feasible and may allow for inflammatory markers to be assessed in larger, more representative samples than are possible with lab- or clinic-based research designs.
Collapse
Affiliation(s)
- Rebecca G Reed
- Department of Psychology, University of Pittsburgh, PA, United States.
| | - Abby R Hillmann
- Department of Psychology, University of Pittsburgh, PA, United States
| | - Maegan Nation
- Department of Psychology, University of Nevada, Las Vegas, NV, United States
| | - Shay Braksator
- Illinois School of Professional Psychology, Chicago, IL, United States
| | - Kirby Sigler
- Department of Psychology, University of Pittsburgh, PA, United States
| |
Collapse
|
4
|
Wang Y, Ye M, Ji Q, Liu Q, Xu X, Zhan Y. The longitudinal trajectory of CSF sTREM2: the alzheimer's disease neuroimaging initiative. Alzheimers Res Ther 2024; 16:138. [PMID: 38926894 PMCID: PMC11202383 DOI: 10.1186/s13195-024-01506-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024]
Abstract
BACKGROUND The soluble triggering receptor expressed on myeloid cells 2 (sTREM2) in cerebrospinal fluid (CSF) is considered a biomarker of microglia activity. The objective of this study was to investigate the trajectory of CSF sTREM2 levels over time and examine its association with sex. METHODS A total of 1,017 participants from the Alzheimer's Disease Neuroimaging Initiative Study (ADNI) with at least one CSF sTREM2 record were included. The trajectory of CSF sTREM2 was analyzed using a growth curve model. The association between CSF sTREM2 levels and sex was assessed using linear mixed-effect models. RESULTS CSF sTREM2 levels were increased with age over time (P < 0.0001). No significant sex difference was observed in sTREM2 levels across the entire sample; however, among the APOE ε4 allele carriers, women exhibited significantly higher sTREM2 levels than men (β = 0.146, P = 0.002). CONCLUSION Our findings highlight the association between CSF sTREM2 levels and age-related increments, underscoring the potential influence of aging on sTREM2 dynamics. Furthermore, our observations indicate a noteworthy association between sex and CSF sTREM2 levels, particularly in individuals carrying the APOE ε4 allele.
Collapse
Affiliation(s)
- Yu Wang
- Department of Epidemiology, School of Public Health (Shenzhen), Sun Yat-Sen University, Shenzhen, China
| | - Meijie Ye
- Department of Epidemiology, School of Public Health (Shenzhen), Sun Yat-Sen University, Shenzhen, China
| | - Qianqian Ji
- Department of Epidemiology, School of Public Health (Shenzhen), Sun Yat-Sen University, Shenzhen, China
| | - Qi Liu
- Department of Epidemiology, School of Public Health (Shenzhen), Sun Yat-Sen University, Shenzhen, China
| | - Xiaowei Xu
- Department of Neurology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China.
| | - Yiqiang Zhan
- Department of Epidemiology, School of Public Health (Shenzhen), Sun Yat-Sen University, Shenzhen, China.
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| |
Collapse
|
5
|
Weng NP. Transcriptome-based measurement of CD8 + T cell age and its applications. Trends Immunol 2023; 44:542-550. [PMID: 37248098 PMCID: PMC10330598 DOI: 10.1016/j.it.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/31/2023]
Abstract
The ability of T cells to undergo robust cell division in response to antigenic stimulation is essential for competent T cell function. However, this ability is reduced with aging and contributes to increased susceptibility to infectious diseases, cancers, and other diseases among older adults. To better understand T cell aging, improved measurements of age-related cellular changes in T cells are necessary. The recent development of machine learning (ML)-assisted transcriptome-based quantification of individual CD8+ T cell age represents a significant step forward in this regard. It reveals both prominent and subtle changes in gene expression and points to potential functional alterations of CD8+ T cells with aging. I argue that single-cell transcriptome-based age prediction in the immune system may have promising future applications.
Collapse
Affiliation(s)
- Nan-Ping Weng
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
| |
Collapse
|
6
|
Reed RG, Presnell SR, Al-Attar A, Lutz CT, Segerstrom SC. Life stressors and immune aging: Protective effects of cognitive reappraisal. Brain Behav Immun 2023; 110:212-221. [PMID: 36893924 PMCID: PMC10106412 DOI: 10.1016/j.bbi.2023.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 01/16/2023] [Accepted: 02/25/2023] [Indexed: 03/11/2023] Open
Abstract
Stressful life events may accelerate aspects of immune aging, but habitual use of an adaptive emotion regulation strategy, cognitive reappraisal, may attenuate these effects. This study examined whether cognitive reappraisal moderates the associations between life stressor frequency and stressor desirability on aspects of immune aging, including late-differentiated CD8+ T and natural killer (NK) cells and inflammatory markers (IL-6, TNF-α, and CRP), both between and within people in a longitudinal sample of 149 older adults (mean age = 77.8, range: 64-92 years). Participants reported stressful life events, use of cognitive reappraisal, and provided blood semiannually for up to 5 years to assess aspects of immune aging. Multilevel models, adjusted for demographic and health covariates, tested the between-person (stable, trait-like differences) and within-person associations (dynamic fluctuations) among life stressors and reappraisal on immune aging. Experiencing more frequent life stressors than usual was associated with higher levels of late-differentiated NK cells within person, but this effect was accounted for by experiencing health-related stressors. Unexpectedly, experiencing more frequent and less desirable stressors were associated with lower average levels of TNF-α. As expected, reappraisal moderated the associations between life stressors and late-differentiated NK cells between people and IL-6 within people. Specifically, older adults who experienced less desirable stressors but also used more reappraisal had significantly lower proportions of late-differentiated NK cells on average and lower levels of IL-6 within-person. These results suggest cognitive reappraisal may play a protective role in attenuating the effects of stressful life events on aspects of innate immune aging in older adults.
Collapse
Affiliation(s)
- Rebecca G Reed
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States.
| | - Steven R Presnell
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, United States
| | - Ahmad Al-Attar
- Department of Hematopathology, University of Massachusetts Medical Center, United States
| | - Charles T Lutz
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, United States; Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, KY, United States
| | | |
Collapse
|
7
|
Chen Z, Shen Y, He J, Shen Y, Zhu W, Wu X, Xiao M. Longer leukocyte telomere length increases cardiovascular mortality in type 2 diabetes patients. J Diabetes 2023; 15:325-331. [PMID: 36890680 PMCID: PMC10101828 DOI: 10.1111/1753-0407.13376] [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: 12/28/2022] [Revised: 02/05/2023] [Accepted: 02/15/2023] [Indexed: 03/10/2023] Open
Abstract
AIMS Leukocyte telomere length (LTL), as a biomarker of biological aging, is associated with the prevalence and complications of diabetes. This study aims to investigate the associations between LTL and all-cause and cause-specific mortality in patients with type 2 diabetes. METHODS All participants with baseline LTL records were included from the National Health and Nutrition Examination Survey 1999-2002. Death status and its causes were ascertained for National Death Index based on International Classification of Diseases, Tenth Revision code. Cox proportional hazards regression models were established to estimate the hazard ratios (HRs) of LTL associating with all-cause and cause-specific mortality. RESULTS The study enrolled 804 diabetic patients with the mean follow-up of 14.9 ± 2.59 years. There were 367 (45.6%) all-cause deaths, 80 (10.0%) cardiovascular deaths, and 42 (5.2%) cancer-related deaths. Longer LTL was associated with reduced all-cause mortality, whereas this association disappeared after adjusting for other variables. Compared with the lowest tertiles of LTL, the multivariable-adjusted hazard ratio of cardiovascular mortality was 2.11 (95% confidence interval [CI] 1.31-3.39; p < .05) in the highest tertiles. In terms of cancer mortality, the highest tertile was negatively correlated with the risk of cancer mortality (HR 0.58 [95% CI 0.37, 0.91], p < .05). CONCLUSION In conclusion, LTL was independently associated with the risk of cardiovascular mortality in patients with type 2 diabetes and was negatively correlated with the risk of cancer mortality. Telomere length may be a predictor of cardiovascular mortality in diabetes.
Collapse
Affiliation(s)
- Ziwei Chen
- Department of CardiologyAffiliated Hospital of Nantong UniversityNantongChina
- Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
| | - Yao Shen
- Eye InstituteAffiliated Hospital of Nantong UniversityNantongChina
| | - Jing He
- Department of ChemotherapyAffiliated Hospital of Nantong UniversityNantongChina
| | - Yang Shen
- Department of CardiologyAffiliated Hospital of Nantong UniversityNantongChina
| | - Weida Zhu
- Department of CardiologyAffiliated Hospital of Nantong UniversityNantongChina
| | - Xiaohui Wu
- Department of CardiologyAffiliated Hospital of Nantong UniversityNantongChina
| | - Mingbing Xiao
- Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
| |
Collapse
|
8
|
Walsh CP, Lindsay EK, Grosse P, Natale BN, Fairlie S, Bwint A, Schaffer L, McMahon K, Duke CD, Forse J, Lamonja-Vicente N, Marsland AL. A systematic review and meta-analysis of the stability of peripheral immune markers in healthy adults. Brain Behav Immun 2023; 107:32-46. [PMID: 36152782 PMCID: PMC9729419 DOI: 10.1016/j.bbi.2022.09.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 09/09/2022] [Accepted: 09/16/2022] [Indexed: 01/03/2023] Open
Abstract
Peripheral immune markers are widely used to predict risk for inflammatory disease. However, whether single assessments of inflammatory biomarkers represent stable individual differences remains unclear. We reviewed 50 studies (N = 48,674; 57 % male; mean age 54 (range 13-79) years) that assessed markers of inflammation on >1 occasion, with time between measures ranging from 24 h to 7+ years. Separate random effects meta-analyses were conducted for each inflammatory marker and time interval. Markers that had broad coverage across most time intervals included C-reactive protein (CRP; k = 37), interleukin (IL)-6 (k = 22), TNF-α (k = 10), and fibrinogen (Fg; k = 9). For CRP, IL-6, and TNF-α, stability estimates generally decreased with time, with strong to moderate stability over intervals <6 months (r's = 0.80-0.61), modest to moderate stability over 6 months - 3 years (r's = 0.60-0.51), and low stability for >3 years (r's = 0.39-0.30). Estimates were less reliable for Fg for time intervals ≤ 3 years although they generally followed the same pattern; more reliable findings suggested greater stability for Fg than other markers for intervals >3 years (r = 0.53). These findings suggest that single measures of inflammatory biomarkers may be an adequate index of stable individual differences in the short term (<6 months), with repeated measures of inflammatory biomarkers recommended over intervals ≥ 6 months to 3 years, and absolutely necessary over intervals >3 years to reliably identify stable individual differences in health risk. These findings are consistent with stability estimates and clinical recommendations for repeated measurement of other cardiovascular measures of risk (e.g., blood lipids, blood pressure).
Collapse
Affiliation(s)
- Catherine P. Walsh
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA,Corresponding author at: Department of Psychology, 210 Bouquet St., Pittsburgh, PA 15213, USA. (C.P. Walsh)
| | - Emily K. Lindsay
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA
| | - Philip Grosse
- Clinical and Translational Science Institute, Forbes Tower, Suite 7057, Pittsburgh, PA 15213, USA.
| | - Brianna N. Natale
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA
| | - Samantha Fairlie
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA.
| | - Amanda Bwint
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA.
| | - Luke Schaffer
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA.
| | - Katie McMahon
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA.
| | - Colin Del Duke
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA
| | - Jenny Forse
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA.
| | - Noemi Lamonja-Vicente
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA,Department of Clinical Psychology and Psychobiology, Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Anna L. Marsland
- Department of Psychology, University of Pittsburgh, 210 Bouquet St., Pittsburgh, PA, USA
| |
Collapse
|
9
|
Lu J, Chen G, Sorokina A, Nguyen T, Wallace T, Nguyen C, Dunn C, Wang S, Ellis S, Shi G, McKelvey J, Sharov A, Liu YT, Schneck J, Weng NP. Cytomegalovirus infection reduced CD70 expression, signaling and expansion of viral specific memory CD8+ T cells in healthy human adults. IMMUNITY & AGEING 2022; 19:54. [DOI: 10.1186/s12979-022-00307-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022]
Abstract
Abstract
Background
Cytomegalovirus (CMV) infection leads to effector memory CD8+ T cell expansion and is associated with immune dysfunction in older adults. However, the molecular alterations of CMV-specific CD8+ T cells in CMV infected healthy young and middle-aged adults has not been fully characterized.
Results
We compared CD8+ T cells specific for a CMV epitope (pp65495-503, NLV) and an influenza A virus (IAV) epitope (M158-66, GIL) from the same young and middle-aged healthy adults with serum positive for anti-CMV IgG. Compared to the IAV-specific CD8+ T cells, CMV-specific CD8+ T cells contained more differentiated effector memory (TEM and TEMRA) cells. Isolated CMV-specific central memory (TCM) but not naïve (TN) cells had a significant reduced activation-induced expansion in vitro compared to their IAV-specific counterparts. Furthermore, we found that CD70 expression was reduced in CMV-specific CD28+CD8+ TCM and that CD70+ TCM had better expansion in vitro than did CD70- TCM. Mechanistically, we showed that CD70 directly enhanced MAPK phosphorylation and CMV-specific CD8+ TCM cells had a reduced MAPK signaling upon activation. Lastly, we showed that age did not exacerbate reduced CD70 expression in CMV- specific CD8+ TCM cells.
Conclusion
Our findings showed that CMV infection causes mild expansion of CMV-NLV-specific CD8+ T cells, reduced CD70 expression and signaling, and proliferation of CMV-NLV-specific CD8+ TCM cells in young and middle-aged healthy adults and revealed an age-independent and CMV infection-specific impact on CD8+ memory T cells.
Collapse
|
10
|
Webster SE, Vos D, Rothstein TL, Holodick NE. Modulation of microbiome diversity and cytokine expression is influenced in a sex-dependent manner during aging. FRONTIERS IN MICROBIOMES 2022; 1:994464. [PMID: 37426084 PMCID: PMC10328149 DOI: 10.3389/frmbi.2022.994464] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
The microbiome and immune system have a unique interplay, which influences homeostasis within the organism. Both the microbiome and immune system play important roles in health and diseases of the aged including development of cancer, autoimmune disorders, and susceptibility to infection. Various groups have demonstrated divergent changes in the gut microbiota during aging, yet the compounding factor of biological sex within the context of aging remains incompletely understood, and little is known about the effect of housing location in the composition of gut microbiota in the context of both sex and age. To better understand the roles of sex, aging, and location in influencing the gut microbiome, we obtained normal healthy BALB/cByJ mice from a single source and aged male and female mice in two different geographical locations. The 16S rRNA was analyzed from fecal samples of these mice and cytokine levels were measured from serum.16S rRNA microbiome analysis indicated that both age and sex play a role in microbiome composition, whereas location plays a lesser role in the diversity present. Interestingly, microbiome changes occurred with alterations in serum expression of several different cytokines including IL-10 and IL-6, which were also both differentially regulated in context to sex and aging. We found both IL-10 and IL-6 play a role in the constitutive expression of pSTAT-3 in CD5+ B-1 cells, which are known to regulate the microbiome. Additionally, significant correlations were found between cytokine expression and significantly abundant microbes. Based on these results, we conclude aging mice undergo sex-associated alterations in the gut microbiome and have a distinct cytokine profile. Further, there is significant interplay between B-1 cells and the microbiome which is influenced by aging in a sex-dependent manner. Together, these results illustrate the complex interrelationship among sex, aging, immunity, housing location, and the gut microbiome.
Collapse
Affiliation(s)
- Sarah E. Webster
- Center for Immunobiology, Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Duncan Vos
- Division of Epidemiology and Biostatics, Department of Biomedical Sciences, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Thomas L. Rothstein
- Center for Immunobiology, Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Nichol E. Holodick
- Center for Immunobiology, Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| |
Collapse
|
11
|
Gkaliagkousi E, Lazaridis A, Dogan S, Fraenkel E, Tuna BG, Mozos I, Vukicevic M, Yalcin O, Gopcevic K. Theories and Molecular Basis of Vascular Aging: A Review of the Literature from VascAgeNet Group on Pathophysiological Mechanisms of Vascular Aging. Int J Mol Sci 2022; 23:ijms23158672. [PMID: 35955804 PMCID: PMC9368987 DOI: 10.3390/ijms23158672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 11/29/2022] Open
Abstract
Vascular aging, characterized by structural and functional alterations of the vascular wall, is a hallmark of aging and is tightly related to the development of cardiovascular mortality and age-associated vascular pathologies. Over the last years, extensive and ongoing research has highlighted several sophisticated molecular mechanisms that are involved in the pathophysiology of vascular aging. A more thorough understanding of these mechanisms could help to provide a new insight into the complex biology of this non-reversible vascular process and direct future interventions to improve longevity. In this review, we discuss the role of the most important molecular pathways involved in vascular ageing including oxidative stress, vascular inflammation, extracellular matrix metalloproteinases activity, epigenetic regulation, telomere shortening, senescence and autophagy.
Collapse
Affiliation(s)
- Eugenia Gkaliagkousi
- 3rd Department of Internal Medicine, Papageorgiou Hospital, Faculty of Medicine, Aristotle University of Thessaloniki, 56429 Thessaloniki, Greece
- Correspondence: (E.G.); (K.G.)
| | - Antonios Lazaridis
- 3rd Department of Internal Medicine, Papageorgiou Hospital, Faculty of Medicine, Aristotle University of Thessaloniki, 56429 Thessaloniki, Greece
| | - Soner Dogan
- Department of Medical Biology, School of Medicine, Yeditepe University, 34755 Istanbul, Turkey
| | - Emil Fraenkel
- 1st Department of Internal Medicine, University Hospital, Pavol Jozef Šafárik University of Košice, Trieda SNP 1, 04066 Košice, Slovakia
| | - Bilge Guvenc Tuna
- Department of Biophysics, School of Medicine, Yeditepe University, 34755 Istanbul, Turkey
| | - Ioana Mozos
- Department of Functional Sciences-Pathophysiology, Center for Translational Research and Systems Medicine, “Victor Babes” University of Medicine and Pharmacy, 300173 Timisoara, Romania
| | - Milica Vukicevic
- Cardiac Surgery Clinic, Clinical Center of Serbia, 11000 Belgrade, Serbia
| | - Ozlem Yalcin
- Department of Physiology, School of Medicine, Koc University, 34450 Istanbul, Turkey
| | - Kristina Gopcevic
- Laboratory for Analytics of Biomolecules, Department of Chemistry in Medicine, Faculty of Medicine, 11000 Belgrade, Serbia
- Correspondence: (E.G.); (K.G.)
| |
Collapse
|
12
|
Bell MR, Kutzler MA. An old problem with new solutions: Strategies to improve vaccine efficacy in the elderly. Adv Drug Deliv Rev 2022; 183:114175. [PMID: 35202770 DOI: 10.1016/j.addr.2022.114175] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 02/09/2022] [Accepted: 02/18/2022] [Indexed: 11/01/2022]
Abstract
Vaccination is the most effective measure to protect against infections. However, with increasing age, there is a progressive decline in the ability of the immune system to both protect against infection and develop protective immunity from vaccination. This age-related decline of the immune system is due to age-related changes in both the innate and adaptive immune systems. With an aging world population and increased risk of pandemics, there is a need to continue to develop strategies to increase vaccine responses in the elderly. Here, the major age-related changes that occur in both the innate and adaptive immune responses that impair the response to vaccination in the elderly will be highlighted. Existing and future strategies to improve vaccine efficacy in the elderly will then be discussed, including adjuvants, delivery methods, and formulation. These strategies provide mechanisms to improve the efficacy of existing vaccines and develop novel vaccines for the elderly.
Collapse
|
13
|
Yadav S, Maurya PK. Correlation between telomere length and biomarkers of oxidative stress in human aging. Rejuvenation Res 2022; 25:25-29. [PMID: 35044242 DOI: 10.1089/rej.2021.0045] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The telomere length (TL) has increasingly been used as a biomarker of human aging because it has been shown to predict the chances of survival and longevity. Oxidative stress is presumed to be a major cause of telomere shortening but the importance of oxidative stress as a determinant of telomere shortening remains less clear and has recently been questioned. We analyzed 105 healthy subjects of both sexes between the ages of 20-77 years. The TL, and, biomarkers of oxidative stress were estimated as per standard protocols. A significant (p<0.001) age-dependent decline in TL was observed. TL was positively correlated with the ferric reducing ability of plasma (FRAP value) (r=0.8811) and reduced glutathione (GSH) (r=0.8209) while negatively correlated with malondialdehyde (MDA) (r=-0.7191). Our findings supported the idea of a possible correlation between the TL and biomarkers of oxidative stress in aging. The study has remarkable scope in medical science as the findings on correlation of TL with biomarkers of oxidative stress in aging are novel and they will help in further research against oxidative stress.
Collapse
Affiliation(s)
- Somu Yadav
- Central University of Haryana, 242287, Biochemistry, Mahendergarh, Mahendragarh, Haryana, India, 123029;
| | - Pawan Kumar Maurya
- Central University of Haryana, 242287, Biochemistry, R No. 302, Department Of Biochemistry, Central University Of Haryana, Mahendergargh, Mahendergarh, Mahendragarh, Haryana, India, 123031;
| |
Collapse
|
14
|
T Cell Aging in Patients with Colorectal Cancer-What Do We Know So Far? Cancers (Basel) 2021; 13:cancers13246227. [PMID: 34944847 PMCID: PMC8699226 DOI: 10.3390/cancers13246227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/07/2021] [Accepted: 12/07/2021] [Indexed: 01/02/2023] Open
Abstract
Simple Summary This review describes the role of T cell aging in colorectal cancer development. T cells are important mediators in cancer immunity. Aging affects T cells, leading to various dysfunctions which can impede antitumor immunity. While some hallmarks of T cell aging have been observed in colorectal cancer patients, the functional role of such cells is not clear. Therefore, understanding how aged T cells influence overall patient outcome could potentially help in the pursue to develop new therapies for the elderly. Abstract Colorectal cancer (CRC) continues to be one of the most frequently diagnosed types of cancers in the world. CRC is considered to affect mostly elderly patients, and the number of diagnosed cases increases with age. Even though general screening improves outcomes, the overall survival and recurrence-free CRC rates in aged individuals are highly dependent on their history of comorbidities. Furthermore, aging is also known to alter the immune system, and especially the adaptive immune T cells. Many studies have emphasized the importance of T cell responses to CRC. Therefore, understanding how age-related changes affect the outcome in CRC patients is crucial. This review focuses on what is so far known about age-related T cell dysfunction in elderly patients with colorectal cancer and how aged T cells can mediate its development. Last, this study describes the advances in basic animal models that have potential to be used to elucidate the role of aged T cells in CRC.
Collapse
|
15
|
Wang P, Leung J, Lam A, Lee S, Calabrese DR, Hays SR, Golden JA, Kukreja J, Singer JP, Wolters PJ, Tang Q, Greenland JR. Lung transplant recipients with idiopathic pulmonary fibrosis have impaired alloreactive immune responses. J Heart Lung Transplant 2021; 41:641-653. [PMID: 34924263 PMCID: PMC9038662 DOI: 10.1016/j.healun.2021.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 11/08/2021] [Accepted: 11/17/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Telomere dysfunction is associated with idiopathic pulmonary fibrosis (IPF) and worse outcomes following lung transplantation. Telomere dysfunction may impair immunity by upregulating p53 and arresting proliferation, but its influence on allograft-specific immune responses is unknown. We hypothesized that subjects undergoing lung transplantation for IPF would have impaired T cell proliferation to donor antigens. METHODS We analyzed peripheral blood mononuclear cells (PBMC) from 14 IPF lung transplant recipients and 12 age-matched non-IPF subjects, before and 2 years after transplantation, as well as PBMC from 9 non-transplant controls. We quantified T cell proliferation and cytokine secretion to donor antigens. Associations between PBMC telomere length, measured by quantitative PCR, and T cell proliferation to alloantigens were evaluated with generalized estimating equation models. RESULTS IPF subjects demonstrated impaired CD8+ T cell proliferation to donor antigens pre-transplant (p < 0.05). IL-2, IL-7, and IL-15 cytokine stimulation restored T cell proliferation, while p53 upregulation blocked proliferation. IPF subjects had shorter PBMC telomere lengths than non-IPF subjects (p < 0.001), and short PBMC telomere length was associated with impaired CD8+ T cell proliferation to alloantigens (p = 0.002). CONCLUSIONS IPF as an indication for lung transplant is associated with short PBMC telomere length and impaired T cell responses to donor antigens. However, the rescue of proliferation following cytokine exposure suggests that alloimmune anergy could be overcome. Telomere length may inform immunosuppression strategies for IPF recipients.
Collapse
Affiliation(s)
- Ping Wang
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Joey Leung
- Department of Surgery, University of California San Francisco, San Francisco, California
| | - Alice Lam
- Department of Surgery, University of California San Francisco, San Francisco, California
| | - Seoyeon Lee
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Daniel R Calabrese
- Department of Medicine, University of California San Francisco, San Francisco, California; Medical Service, San Francisco VA Health Care System, San Francisco, California
| | - Steven R Hays
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Jeffery A Golden
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Jasleen Kukreja
- Department of Surgery, University of California San Francisco, San Francisco, California
| | - Jonathan P Singer
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Paul J Wolters
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Qizhi Tang
- Department of Surgery, University of California San Francisco, San Francisco, California
| | - John R Greenland
- Department of Medicine, University of California San Francisco, San Francisco, California; Medical Service, San Francisco VA Health Care System, San Francisco, California.
| |
Collapse
|
16
|
Moreno-Fernandez ME, Sharma V, Stankiewicz TE, Oates JR, Doll JR, Damen MSMA, Almanan MATA, Chougnet CA, Hildeman DA, Divanovic S. Aging mitigates the severity of obesity-associated metabolic sequelae in a gender independent manner. Nutr Diabetes 2021; 11:15. [PMID: 34099626 PMCID: PMC8184786 DOI: 10.1038/s41387-021-00157-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Understanding gender-associated bias in aging and obesity-driven metabolic derangements has been hindered by the inability to model severe obesity in female mice. METHODS Here, using chow- or high fat diet (HFD)-feeding regimens at standard (TS) and thermoneutral (TN) housing temperatures, the latter to model obesity in female mice, we examined the impact of gender and aging on obesity-associated metabolic derangements and immune responsiveness. Analysis included quantification of: (i) weight gain and adiposity; (ii) the development and severity of glucose dysmetabolism and non-alcoholic fatty liver disease (NAFLD); and (iii) induction of inflammatory pathways related to metabolic dysfunction. RESULTS We show that under chow diet feeding regimen, aging was accompanied by increased body weight and white adipose tissue (WAT) expansion in a gender independent manner. HFD feeding regimen in aged, compared to young, male mice at TS, resulted in attenuated glucose dysmetabolism and hepatic steatosis. However, under TS housing conditions only aged, but not young, HFD fed female mice developed obesity. At TN however, both young and aged HFD fed female mice developed severe obesity. Independent of gender or housing conditions, aging attenuated the severity of metabolic derangements in HFD-fed obese mice. Tempered severity of metabolic derangements in aged mice was associated with increased splenic frequency of regulatory T (Treg) cells, Type I regulatory (Tr1)-like cells and circulating IL-10 levels and decreased vigor of HFD-driven induction of inflammatory pathways in adipose and liver tissues. CONCLUSION Our findings suggest that aging-associated altered immunological profile and inflammatory vigor may play a dominant role in the attenuation of obesogenic diet-driven metabolic dysfunction.
Collapse
Affiliation(s)
- Maria E Moreno-Fernandez
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Vishakha Sharma
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - Traci E Stankiewicz
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Jarren R Oates
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - Jessica R Doll
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Michelle S M A Damen
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Maha A T A Almanan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - Claire A Chougnet
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
| | - David A Hildeman
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA
- Center for Transplant Immunology, and Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center Cincinnati, Ohio, 45229, USA
| | - Senad Divanovic
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA.
- Division of Immunobiology Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA.
- Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, 45220, USA.
- Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, 45229, USA.
| |
Collapse
|
17
|
Yeo GEC, Ng MH, Nordin FB, Law JX. Potential of Mesenchymal Stem Cells in the Rejuvenation of the Aging Immune System. Int J Mol Sci 2021; 22:5749. [PMID: 34072224 PMCID: PMC8198707 DOI: 10.3390/ijms22115749] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/22/2021] [Accepted: 05/24/2021] [Indexed: 12/14/2022] Open
Abstract
Rapid growth of the geriatric population has been made possible with advancements in pharmaceutical and health sciences. Hence, age-associated diseases are becoming more common. Aging encompasses deterioration of the immune system, known as immunosenescence. Dysregulation of the immune cell production, differentiation, and functioning lead to a chronic subclinical inflammatory state termed inflammaging. The hallmarks of the aging immune system are decreased naïve cells, increased memory cells, and increased serum levels of pro-inflammatory cytokines. Mesenchymal stem cell (MSC) transplantation is a promising solution to halt immunosenescence as the cells have excellent immunomodulatory functions and low immunogenicity. This review compiles the present knowledge of the causes and changes of the aging immune system and the potential of MSC transplantation as a regenerative therapy for immunosenescence.
Collapse
Affiliation(s)
| | | | | | - Jia Xian Law
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Cheras 56000, Malaysia; (G.E.C.Y.); (M.H.N.); (F.B.N.)
| |
Collapse
|
18
|
Cytomegalovirus Infection and Its Relationship with Leukocyte Telomere Length: A Cross-Sectional Study. Mediators Inflamm 2021; 2021:6675353. [PMID: 33628118 PMCID: PMC7899777 DOI: 10.1155/2021/6675353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 01/28/2021] [Indexed: 11/19/2022] Open
Abstract
Background Telomeres undergo shortening with each cell division, which could be accelerated by infection. The association between virus infection and telomere length is poorly understood. In the present study, we investigated the putative associations between leukocyte telomere length (TL), cytomegalovirus (CMV) infection, and C-reactive protein (CRP) in a national representative sample of noninstitutionalized population. Methods We analyzed data that was collected in a cross-sectional setting, where 3,987 participants were enrolled with available data on telomere length. The association between telomere length with previous CMV infection and CRP was analyzed using multivariable linear regression models. We further tested if obesity, measured by body mass index (BMI), and smoking could modify this relationship. Results In total, around 46% percent of the study population were men and 54% were women. Average ages were 35.1 years for men and 35.0 years for women. One unit increase of CMV antibody IgG titer was associated with -0.07 (95% confidence interval: -0.12, -0.01) unit decrease of leukocyte TL when sex was adjusted for. After additionally adjusting for BMI and smoking status, the magnitude of the association was only slightly decreased to -0.06 (95% confidence interval: -0.11, -0.01). The effect sizes were comparable after additionally adjusting for CRP. These analyses imply that previous CMV infection affects leukocyte TL through pathways other than CRP. Conclusions Previous CMV infection was associated with shorter leukocyte TL. This association was independent of CRP.
Collapse
|
19
|
Pawelec G, Picard E, Bueno V, Verschoor CP, Ostrand-Rosenberg S. MDSCs, ageing and inflammageing. Cell Immunol 2021; 362:104297. [PMID: 33550187 DOI: 10.1016/j.cellimm.2021.104297] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/30/2020] [Accepted: 01/16/2021] [Indexed: 12/20/2022]
Abstract
The challenge of distinguishing between changes attributable to ageing and those attributable to pathology is even greater for the immune system than for many other organs, and this is especially true for myeloid-derived suppressor cells (MDSCs). Hematopoiesis is different in older adults with a bias towards myelopoiesis, and older adults also manifest "inflammageing" exacerbated by disease and contributing to MDSC induction. Hence, at least in humans, one can only investigate MDSCs in the context of ageing and disease states, and not in the context of ageing processes per se. This contribution provides a brief overview of the literature on MDSCs and ageing in humans.
Collapse
Affiliation(s)
- Graham Pawelec
- Department of Immunology, University of Tübingen, Tübingen, Germany; Health Sciences North Research Institute, Sudbury, Ontario, Canada.
| | - Emilie Picard
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
| | - Valquiria Bueno
- Department of Microbiology, Immunology and Parasitology, UNIFESP Federal University of São Paulo, São Paulo, SP, Brazil
| | - Chris P Verschoor
- Health Sciences North Research Institute, Sudbury, Ontario, Canada; Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Suzanne Ostrand-Rosenberg
- Department of Pathology and Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, United States
| |
Collapse
|
20
|
Samson LD, van den Berg SP, Engelfriet P, Boots AM, Hendriks M, de Rond LG, de Zeeuw-Brouwer ML, Verschuren WM, Borghans JA, Buisman AM, van Baarle D. Limited effect of duration of CMV infection on adaptive immunity and frailty: insights from a 27-year-long longitudinal study. Clin Transl Immunology 2020; 9:e1193. [PMID: 33133599 PMCID: PMC7586993 DOI: 10.1002/cti2.1193] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/18/2020] [Accepted: 09/18/2020] [Indexed: 12/16/2022] Open
Abstract
Objectives Cytomegalovirus infection is thought to affect the immune system and to impact general health during ageing. Higher CMV‐specific antibody levels in the elderly are generally assumed to reflect experienced viral reactivation during life. Furthermore, high levels of terminally differentiated and CMV‐specific T cells are hallmarks of CMV infection, which are thought to expand over time, a process also referred to as memory inflation. Methods We studied CMV‐specific antibody levels over ~ 27 years in 268 individuals (aged 60–89 years at study endpoint), and to link duration of CMV infection to T‐cell numbers, CMV‐specific T‐cell functions, frailty and cardiovascular disease at study endpoint. Results In our study, 136/268 individuals were long‐term CMV seropositive and 19 seroconverted during follow‐up (seroconversion rate: 0.56%/year). CMV‐specific antibody levels increased slightly over time. However, we did not find an association between duration of CMV infection and CMV‐specific antibody levels at study endpoint. No clear association between duration of CMV infection and the size and function of the memory T‐cell pool was observed. Elevated CMV‐specific antibody levels were associated with the prevalence of cardiovascular disease but not with frailty. Age at CMV seroconversion was positively associated with CMV‐specific antibody levels, memory CD4+ T‐cell numbers and frailty. Conclusion Cytomegalovirus‐specific memory T cells develop shortly after CMV seroconversion but do not seem to further increase over time. Age‐related effects other than duration of CMV infection seem to contribute to CMV‐induced changes in the immune system. Although CMV‐specific immunity is not evidently linked to frailty, it tends to associate with higher prevalence of cardiovascular disease.
Collapse
Affiliation(s)
- Leonard Daniël Samson
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands.,Centre for Nutrition, Prevention and Health Services National Institute for Public Health and the Environment Bilthoven The Netherlands.,Department of Rheumatology and Clinical Immunology University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Sara Ph van den Berg
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands.,Center for Translational Immunology University Medical Center Utrecht Utrecht The Netherlands
| | - Peter Engelfriet
- Centre for Nutrition, Prevention and Health Services National Institute for Public Health and the Environment Bilthoven The Netherlands
| | - Annemieke Mh Boots
- Department of Rheumatology and Clinical Immunology University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Marion Hendriks
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands
| | - Lia Gh de Rond
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands
| | - Mary-Lène de Zeeuw-Brouwer
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands
| | - Wm Monique Verschuren
- Centre for Nutrition, Prevention and Health Services National Institute for Public Health and the Environment Bilthoven The Netherlands.,Julius Center for Health Sciences and Primary Care University Medical Center Utrecht The Netherlands
| | - José Am Borghans
- Center for Translational Immunology University Medical Center Utrecht Utrecht The Netherlands
| | - Anne-Marie Buisman
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands
| | - Debbie van Baarle
- Centre for Infectious Disease Control National Institute for Public Health and the Environment Bilthoven The Netherlands.,Center for Translational Immunology University Medical Center Utrecht Utrecht The Netherlands
| |
Collapse
|
21
|
Boccardi V, Cari L, Nocentini G, Riccardi C, Cecchetti R, Ruggiero C, Arosio B, Paolisso G, Herbig U, Mecocci P. Telomeres Increasingly Develop Aberrant Structures in Aging Humans. J Gerontol A Biol Sci Med Sci 2020; 75:230-235. [PMID: 30388200 DOI: 10.1093/gerona/gly257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Indexed: 11/14/2022] Open
Abstract
Telomeres progressively shorten with age, and it has been proposed that critically short and dysfunctional telomeres contribute to aging and aging-associated diseases in humans. For many years it was thought that telomere erosion was strictly a consequence of the "end replication problem," or the inability of replicative polymerases to completely duplicate linear DNA ends. It is becoming increasingly evident, however, that telomere shortening of cultured human cells is also caused because of other replication defects in telomeric repeats, those that cause fragile telomeres and other aberrant telomeric structures that can be detected on metaphase chromosomes. Whether these replication defects contribute to telomere erosion also in human tissues is currently unknown. By analyzing peripheral blood mononuclear cells from a total of 35 healthy subjects ranging in age from 23 to 101 years, we demonstrated that telomeres increasingly display aberrant structures with advancing donor age. Although the percentages of fragile telomeres increased only until adulthood, the percentages of chromosomes displaying sister telomere loss and sister telomere chromatid fusions increased consistently throughout the entire human life span. Our data, therefore, suggest that telomeric replication defects other than the end replication problem contribute to aging-associated telomere erosion in humans.
Collapse
Affiliation(s)
- Virginia Boccardi
- Department of Medicine, Section of Gerontology and Geriatrics, Santa Maria della Misericordia Hospital
| | - Luigi Cari
- Department of Medicine, Section of Pharmacology, University of Perugia
| | | | - Carlo Riccardi
- Department of Medicine, Section of Pharmacology, University of Perugia
| | - Roberta Cecchetti
- Department of Medicine, Section of Gerontology and Geriatrics, Santa Maria della Misericordia Hospital
| | - Carmelinda Ruggiero
- Department of Medicine, Section of Gerontology and Geriatrics, Santa Maria della Misericordia Hospital
| | - Beatrice Arosio
- Geriatric Unit, Fondazione Ca' Granda, IRCCS Ospedale Maggiore Policlinico, Milan.,Department of Medical Sciences and Community Health, University of Milan
| | - Giuseppe Paolisso
- Department of Medical, Surgical, Neurologic, Metabolic and Aging Sciences, University of Campania "Luigi Vanvitelli," Naples, Italy
| | - Utz Herbig
- Department of Microbiology, Biochemistry and Molecular Genetics, New Jersey Medical School-Cancer Center, Rutgers Biomedical and Health Sciences, Newark
| | - Patrizia Mecocci
- Department of Medicine, Section of Gerontology and Geriatrics, Santa Maria della Misericordia Hospital
| |
Collapse
|
22
|
Almanan M, Raynor J, Ogunsulire I, Malyshkina A, Mukherjee S, Hummel SA, Ingram JT, Saini A, Xie MM, Alenghat T, Way SS, Deepe GS, Divanovic S, Singh H, Miraldi E, Zajac AJ, Dent AL, Hölscher C, Chougnet C, Hildeman DA. IL-10-producing Tfh cells accumulate with age and link inflammation with age-related immune suppression. SCIENCE ADVANCES 2020; 6:eabb0806. [PMID: 32832688 PMCID: PMC7439492 DOI: 10.1126/sciadv.abb0806] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 06/11/2020] [Indexed: 05/02/2023]
Abstract
Aging results in profound immune dysfunction, resulting in the decline of vaccine responsiveness previously attributed to irreversible defects in the immune system. In addition to increased interleukin-6 (IL-6), we found aged mice exhibit increased systemic IL-10 that requires forkhead box P3-negative (FoxP3-), but not FoxP3+, CD4+T cells. Most IL-10-producing cells manifested a T follicular helper (Tfh) phenotype and required the Tfh cytokines IL-6 and IL-21 for their accrual, so we refer to them as Tfh10 cells. IL-21 was also required to maintain normal serum levels of IL-6 and IL-10. Notably, antigen-specific Tfh10 cells arose after immunization of aged mice, and neutralization of IL-10 receptor signaling significantly restored Tfh-dependent antibody responses, whereas depletion of FoxP3+ regulatory and follicular regulatory cells did not. Thus, these data demonstrate that immune suppression with age is reversible and implicate Tfh10 cells as an intriguing link between "inflammaging" and impaired immune responses with age.
Collapse
Affiliation(s)
- Maha Almanan
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Jana Raynor
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Ireti Ogunsulire
- Division of Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Anna Malyshkina
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Shibabrata Mukherjee
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Sarah A. Hummel
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Jennifer T. Ingram
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ankur Saini
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Center for Systems Immunology, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
| | - Markus M. Xie
- Division of Infectious Diseases, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Theresa Alenghat
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Center for Systems Immunology, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
| | - Sing Sing Way
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
- Division of Infectious Diseases, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - George S. Deepe
- Division of Infectious Diseases, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Senad Divanovic
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Harinder Singh
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Center for Systems Immunology, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
| | - Emily Miraldi
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Center for Systems Immunology, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
| | - Allan J. Zajac
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Alexander L. Dent
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Christoph Hölscher
- Division of Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Claire Chougnet
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Center for Systems Immunology, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
| | - David A. Hildeman
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children’s Hospital, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Center for Systems Immunology, Cincinnati Children’s Hospital, Cincinnati, OH 45229, USA
| |
Collapse
|
23
|
Ferrucci L, Gonzalez‐Freire M, Fabbri E, Simonsick E, Tanaka T, Moore Z, Salimi S, Sierra F, de Cabo R. Measuring biological aging in humans: A quest. Aging Cell 2020; 19:e13080. [PMID: 31833194 PMCID: PMC6996955 DOI: 10.1111/acel.13080] [Citation(s) in RCA: 313] [Impact Index Per Article: 78.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/22/2019] [Accepted: 10/27/2019] [Indexed: 12/16/2022] Open
Abstract
The global population of individuals over the age of 65 is growing at an unprecedented rate and is expected to reach 1.6 billion by 2050. Most older individuals are affected by multiple chronic diseases, leading to complex drug treatments and increased risk of physical and cognitive disability. Improving or preserving the health and quality of life of these individuals is challenging due to a lack of well-established clinical guidelines. Physicians are often forced to engage in cycles of "trial and error" that are centered on palliative treatment of symptoms rather than the root cause, often resulting in dubious outcomes. Recently, geroscience challenged this view, proposing that the underlying biological mechanisms of aging are central to the global increase in susceptibility to disease and disability that occurs with aging. In fact, strong correlations have recently been revealed between health dimensions and phenotypes that are typical of aging, especially with autophagy, mitochondrial function, cellular senescence, and DNA methylation. Current research focuses on measuring the pace of aging to identify individuals who are "aging faster" to test and develop interventions that could prevent or delay the progression of multimorbidity and disability with aging. Understanding how the underlying biological mechanisms of aging connect to and impact longitudinal changes in health trajectories offers a unique opportunity to identify resilience mechanisms, their dynamic changes, and their impact on stress responses. Harnessing how to evoke and control resilience mechanisms in individuals with successful aging could lead to writing a new chapter in human medicine.
Collapse
Affiliation(s)
- Luigi Ferrucci
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Marta Gonzalez‐Freire
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Elisa Fabbri
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
- Department of Medical and Surgical SciencesUniversity of BolognaBolognaItaly
| | - Eleanor Simonsick
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Toshiko Tanaka
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Zenobia Moore
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Shabnam Salimi
- Department of Epidemiology and Public HealthUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Felipe Sierra
- Division of Aging BiologyNational Institute on AgingNIHBethesdaMDUSA
| | - Rafael de Cabo
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| |
Collapse
|
24
|
Meier HCS, Parks CG, Liu HB, Sandler DP, Simonsick EM, Deane K, Weng NP. Cellular aging over 13 years associated with incident antinuclear antibody positivity in the Baltimore Longitudinal Study of Aging. J Autoimmun 2019; 105:102295. [PMID: 31303354 PMCID: PMC6878149 DOI: 10.1016/j.jaut.2019.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 11/16/2022]
Abstract
Age-associated increases in antinuclear antibodies (ANA) in the general population are commonly noted but the mechanisms underlying this observation are unclear. This study aims to evaluate whether shorter peripheral blood mononuclear cell (PBMC) telomere length, a marker of more advanced biological age, is associated with ANA positivity prevalence and incidence in middle and older aged autoimmune disease-free individuals from the Baltimore Longitudinal Study of Aging (BLSA). Telomere length was measured by Southern Blot and categorized into tertiles. ANA was measured in a 1:80 and a 1:160 dilution of sera by immunofluorescence using HEp-2 cells (seropositive = 3 or 4). Multiple logistic regression was used to estimate the odds ratios and 95% confidence intervals of ANA positivity comparing the shorter tertiles of telomere length to the longest tertile for two cross-sectional points in time and then longitudinally to assess the association between shorter telomere length and incident ANA positivity. Cross-sectional analyses were adjusted for sex, race and BMI (N = 368 baseline, N = 370 follow-up) and longitudinal analyses were adjusted for sex, race, BMI and time between baseline and follow-up (N = 246). No statistically significant cross-sectional associations were observed at baseline or follow-up. Among those where ANA negative at baseline, individuals with shorter telomeres were more likely to be ANA positive at follow-up, an average 13 years later. Individuals with short telomeres at both time periods were more likely to be ANA positive. Findings suggest that ANA positivity in the general population may be indicative of immune dysfunction resulting from advanced cellular aging processes.
Collapse
Affiliation(s)
- Helen C S Meier
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
| | - Christine G Parks
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Hans B Liu
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Dale P Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Eleanor M Simonsick
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Kevin Deane
- Division of Rheumatology, University of Colorado School of Medicine, Denver, CO, USA
| | - Nan-Ping Weng
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA.
| |
Collapse
|
25
|
Powell-Wiley TM, Gebreab SY, Claudel SE, Ayers C, Andrews MR, Adu-Brimpong J, Berrigan D, Davis SK. The relationship between neighborhood socioeconomic deprivation and telomere length: The 1999-2002 National Health and Nutrition Examination Survey. SSM Popul Health 2019; 10:100517. [PMID: 31872036 PMCID: PMC6909179 DOI: 10.1016/j.ssmph.2019.100517] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 12/29/2022] Open
Abstract
Socioeconomically disadvantaged neighborhoods have been associated with poor health outcomes. Little is known about the biological mechanism by which deprived neighborhood conditions exert negative influences on health. Data from the 1999–2002 National Health and Nutrition Examination Surveys (NHANES) were used to assess the relationship between neighborhood deprivation index (NDI) and log-transformed leukocyte telomere length (LTL) via multilevel modeling to control for census tract level clustering. Models were constructed using tertiles of NDI (ref = low NDI). NDI was calculated using census tract level socioeconomic indicators from the 2000 U.S. Census. The sample (n = 5,106 adults) was 49.8% female and consisted of 82.9% non-Hispanic whites, 9.4% non-Hispanic blacks, and 7.6% Mexican Americans. Mean age was 45.8 years. Residents of neighborhoods with high NDI were younger, non-white, had lower educational attainment, and had a lower poverty to income ratio (all p < 0.0001). Neighborhood deprivation was inversely associated with LTL among individuals living in neighborhoods with medium NDI (β = −0.043, SE = 0.012, p = 0.0005) and high NDI (β = −0.039, SE = 0.013, p = 0.003). Among men, both medium (β = −0.042, SE = 0.015, p = 0.006) and high (β = −0.047, SE = 0.015, p = 0.001) NDI were associated with shorter LTL. Among women, only medium NDI (β = −0.020, SE = 0.016, p = 0.009) was associated with shorter LTL. After controlling for individual characteristics, including individual-level socioeconomic status, increasing neighborhood socioeconomic deprivation is associated with shorter LTL among a nationally representative sample of US adults. This suggests that telomere shortening may be a mechanism through which neighborhood deprivation results in poor health outcomes. Neighborhood deprivation is inversely related to telomere length. This persists after adjusting for behavior and individual socioeconomic status. Telomere shortening in high deprivation represented 7.5 years of accelerated aging. Telomere shortening may be a mechanism linking neighborhoods and health.
Collapse
Affiliation(s)
- Tiffany M. Powell-Wiley
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, MD, USA
- Corresponding author. Social Determinants of Obesity and Cardiovascular Risk Laboratory, Cardiovascular Branch, DIR, NHLBI, Building 10-CRC, Room 5-5332, MSC 1454 10 Center Drive, Bethesda, MD, 20892, USA.
| | - Samson Y. Gebreab
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sophie E. Claudel
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Colby Ayers
- Reynolds Cardiovascular Clinical Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Marcus R. Andrews
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Joel Adu-Brimpong
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - David Berrigan
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sharon K. Davis
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
26
|
Zribi B, Uziel O, Lahav M, Mesilati Stahy R, Singer P. Telomere Length Changes during Critical Illness: A Prospective, Observational Study. Genes (Basel) 2019; 10:genes10100761. [PMID: 31569793 PMCID: PMC6826589 DOI: 10.3390/genes10100761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/17/2019] [Accepted: 09/26/2019] [Indexed: 12/12/2022] Open
Abstract
Objective: evaluation of telomere length change in acutely ill adult patients. Design: Blood samples were drawn on the first and seventh day of intensive care unit (ICU) stay to assess telomere length using a polymerase chain reaction (PCR)-based technique. Demographic data collected included age, weight, admission diagnosis, baseline laboratory values (pH, C- reactive protein (CRP), serum albumin level, white blood cell count (WBC) count, platelet count), and baseline SOFA and APACHE II scores. Additional data collected during the ICU stay included a repeated WBC count, the presence of positive blood cultures and outcome data, including death in the ICU or following discharge, whether ventilated or not at ICU discharge, and destination following discharge, i.e., medical ward or rehabilitation. Setting: General ICU in tertiary hospital. Patients: Forty patients admitted to the ICU within 72 h of hospital admission suffering from an acute illness were included in this prospective, observational study. Main results: Of the 40 patients studied, telomere shortening was noted in 21, telomere lengthening in 11, and no significant change in the other eight. The age of patients demonstrating telomere shortening was statistically significantly younger (45.4 vs. 61.5 years, p < 0.023) compared to those showing increased telomere length. In addition, a significant correlation was observed between the difference in telomere length and the corresponding difference in WBC count (telomere shortening was associated with a decreased WBC count and vice versa). A trend toward shortening was seen in patients with sepsis (p = 0.07). No significant correlations were found for any other demographic or outcome parameter and changes in telomere length. Conclusion: Changes in telomere length, both shortening and lengthening, were evident in the acute setting, but no associations between such changes with outcome were noted. Further studies in more homogeneous groups of patients appear to be warranted.
Collapse
Affiliation(s)
- Benjamin Zribi
- Department of Anesthesiology, Rabin Medical Center, Campus Beilinson, Petah Tikva 49100, Israel.
| | - Orit Uziel
- The Felsenstein Medical Research Center, Rabin Medical Center, Campus Beilinson, Petah Tikva and the Sackler School of Medicine, Tel Aviv University, Petah Tikva 49100, Israel.
| | - Meir Lahav
- Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center and the Sackler School of Medicine, Tel Aviv University, Petah Tikva 49100, Israel.
| | - Ronit Mesilati Stahy
- The Felsenstein Medical Research Center, Rabin Medical Center, Campus Beilinson, Petah Tikva 49100, Israel.
| | - Pierre Singer
- Department of General Intensive Care and Institute for Nutrition Research, Rabin Medical Center, Campus Beilinson and the Sackler School of Medicine, Tel Aviv University, Petah Tikva 49100, Israel.
| |
Collapse
|
27
|
Patrick MS, Cheng NL, Kim J, An J, Dong F, Yang Q, Zou I, Weng NP. Human T Cell Differentiation Negatively Regulates Telomerase Expression Resulting in Reduced Activation-Induced Proliferation and Survival. Front Immunol 2019; 10:1993. [PMID: 31497023 PMCID: PMC6712505 DOI: 10.3389/fimmu.2019.01993] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 08/07/2019] [Indexed: 01/10/2023] Open
Abstract
Maintenance of telomeres is essential for preserving T cell proliferative responses yet the precise role of telomerase in human T cell differentiation, function, and aging is not fully understood. Here we analyzed human telomerase reverse transcriptase (hTERT) expression and telomerase activity in six T cell subsets from 111 human adults and found that levels of hTERT mRNA and telomerase activity had an ordered decrease from naïve (TN) to central memory (TCM) to effector memory (TEM) cells and were higher in CD4+ than their corresponding CD8+ subsets. This differentiation-related reduction of hTERT mRNA and telomerase activity was preserved after activation. Furthermore, the levels of hTERT mRNA and telomerase activity were positively correlated with the degree of activation-induced proliferation and survival of T cells in vitro. Partial knockdown of hTERT by an anti-sense oligo in naïve CD4+ cells led to a modest but significant reduction of cell proliferation. Finally, we found that activation-induced levels of telomerase activity in CD4+ TN and TCM cells were significantly lower in old than in young subjects. These findings reveal that hTERT/telomerase expression progressively declines during T cell differentiation and age-associated reduction of activation-induced expression of hTERT/telomerase mainly affects naïve CD4+ T cells and suggest that enhancing telomerase activity could be a strategy to improve T cell function in the elderly.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Nan-ping Weng
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| |
Collapse
|
28
|
Kaufman ES. Recurrent atrial fibrillation after ablation: Can telomere length identify patients who are young at heart? J Cardiovasc Electrophysiol 2019; 30:1125-1126. [PMID: 31042328 DOI: 10.1111/jce.13960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 04/27/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Elizabeth S Kaufman
- The Heart and Vascular Research Center, MetroHealth Campus, Case Western Reserve University, Cleveland, Ohio
| |
Collapse
|
29
|
Mensà E, Latini S, Ramini D, Storci G, Bonafè M, Olivieri F. The telomere world and aging: Analytical challenges and future perspectives. Ageing Res Rev 2019; 50:27-42. [PMID: 30615937 DOI: 10.1016/j.arr.2019.01.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/15/2018] [Accepted: 01/03/2019] [Indexed: 12/12/2022]
Abstract
Telomeres, the terminal nucleoprotein structures of eukaryotic chromosomes, play pleiotropic functions in cellular and organismal aging. Telomere length (TL) varies throughout life due to the influence of genetic factors and to a complex balancing between "shortening" and "elongation" signals. Telomerase, the only enzyme that can elongate a telomeric DNA chain, and telomeric repeat-containing RNA (TERRA), a long non-coding RNA involved in looping maintenance, play key roles in TL during life. Despite recent advances in the knowledge of TL, TERRA and telomerase activity (TA) biology and their measurement techniques, the experimental and theoretical issues involved raise a number of problems that should carefully be considered by researchers approaching the "telomere world". The increasing use of such parameters - hailed as promising clinically relevant biomarkers - has failed to be paralleled by the development of automated and standardized measurement technology. Consequently, associating given TL values to specific pathological conditions involves on the one hand technological issues and on the other clinical-biological issues related to the planning of clinically relevant association studies. Addressing these issues would help avoid major biases in association studies involving TL and a number of outcomes, especially those focusing on psychological and bio-behavioral variables. The main challenge in telomere research is the development of accurate and reliable measurement methods to achieve simple and sensitive TL, TERRA, and TA detection. The discovery of the localization of telomeres and TERRA in cellular and extracellular compartments had added an additional layer of complexity to the measurement of these age-related biomarkers. Since combined analysis of TL, TERRA and TA may well provide more exhaustive clinical information than a single parameter, we feel it is important for researchers in the various fields to become familiar with their most common measurement techniques and to be aware of the respective merits and drawbacks of these approaches.
Collapse
Affiliation(s)
- Emanuela Mensà
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
| | - Silvia Latini
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
| | - Deborah Ramini
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
| | - Gianluca Storci
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy; Interdepartmental Centre "L. Galvani" (CIG), University of Bologna, Bologna, Italy
| | - Massimiliano Bonafè
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy; Interdepartmental Centre "L. Galvani" (CIG), University of Bologna, Bologna, Italy; Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST), IRCCS, Biosciences Laboratory, Meldola, Italy
| | - Fabiola Olivieri
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy; Center of Clinical Pathology and Innovative Therapy, IRCCS INRCA, Ancona, Italy.
| |
Collapse
|
30
|
Wu Q, Han D, Zhang J, Li X. Expression of telomere repeat binding factor 1 and TRF2 in Alzheimer’s disease and correlation with clinical parameters. Neurol Res 2019; 41:504-509. [PMID: 30761946 DOI: 10.1080/01616412.2019.1580456] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Qi Wu
- The Second Clinical Medical College, Zhengzhou University, Zhengzhou, China
| | - Dongyang Han
- The Second Clinical Medical College, Zhengzhou University, Zhengzhou, China
| | - Jiangkuan Zhang
- The Second Clinical Medical College, Zhengzhou University, Zhengzhou, China
| | - Xin Li
- Department of Neurology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| |
Collapse
|
31
|
Squassina A, Pisanu C, Vanni R. Mood Disorders, Accelerated Aging, and Inflammation: Is the Link Hidden in Telomeres? Cells 2019; 8:cells8010052. [PMID: 30650526 PMCID: PMC6356466 DOI: 10.3390/cells8010052] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/10/2019] [Accepted: 01/12/2019] [Indexed: 12/26/2022] Open
Abstract
Mood disorders are associated with an increased risk of aging-related diseases, which greatly contribute to the excess morbidity and mortality observed in affected individuals. Clinical and molecular findings also suggest that mood disorders might be characterized by a permanent state of low-grade inflammation. At the cellular level, aging translates into telomeres shortening. Intriguingly, inflammation and telomere shortening show a bidirectional association: a pro-inflammatory state seems to contribute to aging and telomere dysfunction, and telomere attrition is able to induce low-grade inflammation. Several independent studies have reported shorter telomere length and increased levels of circulating inflammatory cytokines in mood disorders, suggesting a complex interplay between altered inflammatory–immune responses and telomere dynamics in the etiopathogenesis of these disorders. In this review, we critically discuss studies investigating the role of telomere attrition and inflammation in the pathogenesis and course of mood disorders, and in pharmacological treatments with psychotropic medications.
Collapse
Affiliation(s)
- Alessio Squassina
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09042 Monserrato Cagliari, Italy.
- Department of Psychiatry, Dalhousie University, Halifax, NS B3H 2E2, Canada.
| | - Claudia Pisanu
- Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, 09042 Monserrato Cagliari, Italy.
- Department of Neuroscience, Unit of Functional Pharmacology, Uppsala University, 752 39 Uppsala, Sweden.
| | - Roberta Vanni
- Department of Biomedical Sciences, Unit of Biology and Genetics, University of Cagliari, 09042 Monserrato Cagliari, Italy.
| |
Collapse
|
32
|
Solana C, Pereira D, Tarazona R. Early Senescence and Leukocyte Telomere Shortening in SCHIZOPHRENIA: A Role for Cytomegalovirus Infection? Brain Sci 2018; 8:brainsci8100188. [PMID: 30340343 PMCID: PMC6210638 DOI: 10.3390/brainsci8100188] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/09/2018] [Accepted: 10/16/2018] [Indexed: 12/17/2022] Open
Abstract
Schizophrenia is a severe, chronic mental disorder characterized by delusions and hallucinations. Several evidences support the link of schizophrenia with accelerated telomeres shortening and accelerated aging. Thus, schizophrenia patients show higher mortality compared to age-matched healthy donors. The etiology of schizophrenia is multifactorial, involving genetic and environmental factors. Telomere erosion has been shown to be accelerated by different factors including environmental factors such as cigarette smoking and chronic alcohol consumption or by psychosocial stress such as childhood maltreatment. In humans, telomere studies have mainly relied on measurements of leukocyte telomere length and it is generally accepted that individuals with short leukocyte telomere length are considered biologically older than those with longer ones. A dysregulation of both innate and adaptive immune systems has been described in schizophrenia patients and other mental diseases supporting the contribution of the immune system to disease symptoms. Thus, it has been suggested that abnormal immune activation with high pro-inflammatory cytokine production in response to still undefined environmental agents such as herpesviruses infections can be involved in the pathogenesis and pathophysiology of schizophrenia. It has been proposed that chronic inflammation and oxidative stress are involved in the course of schizophrenia illness, early onset of cardiovascular disease, accelerated aging, and premature mortality in schizophrenia. Prenatal or neonatal exposures to neurotropic pathogens such as Cytomegalovirus or Toxoplasma gondii have been proposed as environmental risk factors for schizophrenia in individuals with a risk genetic background. Thus, pro-inflammatory cytokines and microglia activation, together with genetic vulnerability, are considered etiological factors for schizophrenia, and support that inflammation status is involved in the course of illness in schizophrenia.
Collapse
Affiliation(s)
- Corona Solana
- Centro Hospitalar Psiquiatrico de Lisboa, 1700-063 Lisboa, Portugal.
| | - Diana Pereira
- Centro Hospitalar Psiquiatrico de Lisboa, 1700-063 Lisboa, Portugal.
| | - Raquel Tarazona
- Immunology Unit, University of Extremadura, 10003 Caceres, Spain.
| |
Collapse
|
33
|
Abstract
The study of aging relates to changes in physical and functional dimensions that occur over time in living organisms. Yet, a model that establishes the hierarchical relationship and interlaced time courses of molecular, phenotypic, and functional hierarchical domains of aging in humans has not been established. We propose that studying the mechanisms and consequences of aging through the lens of these hierarchical domains and their connections will provide clarity in semantics and enhance a translational perspective. The study of human aging would be most informative from a life course, longitudinal perspective, given that manifestations of aging are already detectable early in life at the molecular level, yet the phenotypic responses remain masked by compensatory/resiliency mechanisms. Understanding the nature of these mechanisms is paramount for developing interventions that reduce the burden of disease and disability in older persons.
Collapse
Affiliation(s)
- Luigi Ferrucci
- From the Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, MD (L.F., P.-L.K., E.M.S.)
| | - Morgan E Levine
- Department of Pathology, Yale School of Medicine, New Haven, CT (M.E.L.)
| | - Pei-Lun Kuo
- From the Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, MD (L.F., P.-L.K., E.M.S.)
- Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD (P.-L.K.)
| | - Eleanor M Simonsick
- From the Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, MD (L.F., P.-L.K., E.M.S.)
| |
Collapse
|
34
|
Staffaroni AM, Tosun D, Lin J, Elahi FM, Casaletto KB, Wynn MJ, Patel N, Neuhaus J, Walters SM, Epel ES, Blackburn EH, Kramer JH. Telomere attrition is associated with declines in medial temporal lobe volume and white matter microstructure in functionally independent older adults. Neurobiol Aging 2018; 69:68-75. [PMID: 29859365 PMCID: PMC6430612 DOI: 10.1016/j.neurobiolaging.2018.04.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 03/29/2018] [Accepted: 04/28/2018] [Indexed: 12/24/2022]
Abstract
Although leukocyte telomere length (TL) shortens over the lifespan and is associated with diseases of aging, little is known about the relationships between TL, memory, and brain structure. Sixty-nine functionally normal older adults (mean age = 71.7) were assessed at 2 time points (mean interval = 2.9 years). Linear mixed models assessed relationships between TL and hippocampal volume, fractional anisotropy, and mean diffusivity (MD) of the fornix and verbal and visual episodic memory. Unstandardized coefficients are reported in the following, and p values are not corrected for multiple comparisons. A negative baseline trend was observed between TL and fornix MD (b = -0.01, p = 0.06), but no other cross-sectional associations were significant (ps > 0.16). Greater TL shortening at follow-up was associated with greater hippocampal volume loss (b = 27.09, p < 0.001), even after controlling for global volume loss (b = 10.83, p = 0.002). Greater telomere attrition was also associated with larger increases in fornix MD (b = -0.01, p = 0.012) and decreases in fornix fractional anisotropy (b = 0.004, p = 0.002). TL was not associated with changes in episodic memory (ps > 0.23). These relationships may reflect neurobiological influences that affect both TL and brain structure, as well as the effect of TL on brain aging via mechanisms such as cellular senescence and inflammation.
Collapse
Affiliation(s)
- Adam M Staffaroni
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA.
| | - Duygu Tosun
- Department of Veteran Affairs Medical Center, San Francisco, CA, USA; Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, CA, USA
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California at San Francisco, San Francisco, CA, USA
| | - Fanny M Elahi
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Kaitlin B Casaletto
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Matthew J Wynn
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Nihar Patel
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - John Neuhaus
- Department of Epidemiology and Biostatistics, University of California, San Francisco, USA
| | - Samantha M Walters
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| | - Elissa S Epel
- Department of Psychiatry, University of California at San Francisco, San Francisco, CA, USA
| | | | - Joel H Kramer
- Department of Neurology, Memory and Aging Center, University of California at San Francisco, San Francisco, CA, USA
| |
Collapse
|
35
|
Griffiths PD. Do opportunistic viruses hunt in packs? Rev Med Virol 2018; 28:e1982. [PMID: 29738116 DOI: 10.1002/rmv.1982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
36
|
Herman P, Stein A, Gibbs K, Korsunsky I, Gregersen P, Bloom O. Persons with Chronic Spinal Cord Injury Have Decreased Natural Killer Cell and Increased Toll-Like Receptor/Inflammatory Gene Expression. J Neurotrauma 2018; 35:1819-1829. [PMID: 29310515 PMCID: PMC6033303 DOI: 10.1089/neu.2017.5519] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Infections are the leading cause of death for individuals with traumatic spinal cord injury (SCI). Along with increased infection rates, inflammation is often also observed in persons with chronic SCI. Together, immunological changes post-SCI are also poised to impede neurological recovery and mediate common medical consequences of SCI, including atherogenesis and neuropathic pain. The molecular mechanisms contributing to increased infection susceptibility and inflammation in persons living with SCI are poorly understood. Here, we used tools of functional genomics to perform a pilot study to compare whole-blood gene expression in individuals with chronic SCI (≥1 year from initial injury; N = 31) and uninjured individuals (N = 26). We identified 1815 differentially expressed genes in all SCI participants and 2226 differentially expressed genes in persons with SCI rostral to thoracic level 5, compared to uninjured participants. This included marked downregulation of natural killer cell genes and upregulation of the proinflammatory Toll-like receptor signaling pathway. These data provide novel mechanistic insights into the causes underlying the symptoms of immune dysfunction in individuals living with SCI.
Collapse
Affiliation(s)
- Paige Herman
- 1 The Feinstein Institute for Medical Research , Northwell Health
| | - Adam Stein
- 2 Department of Physical Medicine and Rehabilitation, Zucker School of Medicine at Hofstra Northwell
| | - Katie Gibbs
- 1 The Feinstein Institute for Medical Research , Northwell Health.,2 Department of Physical Medicine and Rehabilitation, Zucker School of Medicine at Hofstra Northwell
| | - Ilya Korsunsky
- 3 Robert S. Boas Center for Genomics & Human Genetics , The Feinstein Institute for Medical Research
| | - Peter Gregersen
- 3 Robert S. Boas Center for Genomics & Human Genetics , The Feinstein Institute for Medical Research.,4 Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra Northwell , Northwell Health, Hempstead, NewYork
| | - Ona Bloom
- 1 The Feinstein Institute for Medical Research , Northwell Health.,2 Department of Physical Medicine and Rehabilitation, Zucker School of Medicine at Hofstra Northwell .,4 Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra Northwell , Northwell Health, Hempstead, NewYork
| |
Collapse
|
37
|
van den Berg SPH, Wong A, Hendriks M, Jacobi RHJ, van Baarle D, van Beek J. Negative Effect of Age, but Not of Latent Cytomegalovirus Infection on the Antibody Response to a Novel Influenza Vaccine Strain in Healthy Adults. Front Immunol 2018; 9:82. [PMID: 29434600 PMCID: PMC5796903 DOI: 10.3389/fimmu.2018.00082] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 01/11/2018] [Indexed: 01/15/2023] Open
Abstract
Older adults are more vulnerable to influenza virus infection and at higher risk for severe complications and influenza-related death compared to younger adults. Unfortunately, influenza vaccine responses tend to be impaired in older adults due to aging of the immune system (immunosenescence). Latent infection with cytomegalovirus (CMV) is assumed to enhance age-associated deleterious changes of the immune system. Although lower responses to influenza vaccination were reported in CMV-seropositive compared to CMV-seronegative adults and elderly, beneficial effects of CMV infection were observed as well. The lack of consensus in literature on the effect of latent CMV infection on influenza vaccination may be due to the presence of pre-existing immunity to influenza in these studies influencing the subsequent influenza vaccine response. We had the unique opportunity to evaluate the effect of age and latent CMV infection on the antibody response to the novel influenza H1N1pdm vaccine strain during the pandemic of 2009, thereby reducing the effect of pre-existing immunity on the vaccine-induced antibody response. This analysis was performed in a large study population (n = 263) in adults (18–52 years old). As a control, memory responses to the seasonal vaccination, including the same H1N1pdm and an H3N2 strain, were investigated in the subsequent season 2010–2011. With higher age, we found decreased antibody responses to the pandemic vaccination even within this age range, indicating signs of immunosenescence to this novel antigen in the study population. Using a generalized estimation equation regression model, adjusted for age, sex, and previous influenza vaccinations, we observed that CMV infection in contrast did not influence the influenza virus-specific antibody titer after H1N1pdm vaccination. Yet, we found higher residual protection rates (antibody level ≥40 hemagglutinin units (HAU)) in CMV-seropositive individuals than in CMV-seronegative individuals 6 months and 1 year after pandemic vaccination. In the subsequent season, no effect of age or CMV infection on seasonal influenza vaccine response was observed. In conclusion, we observed no evidence for CMV-induced impairment of antibody responses to a novel influenza strain vaccine in adults. If anything, our data suggest that there might be a beneficial effect of latent CMV infection on the protection rate after novel influenza vaccination.
Collapse
Affiliation(s)
- Sara P H van den Berg
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands.,Laboratory of Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Albert Wong
- Department of Statistics, Informatics and Mathematical Modelling, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Marion Hendriks
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Ronald H J Jacobi
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Debbie van Baarle
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands.,Laboratory of Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Josine van Beek
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| |
Collapse
|