Autor: |
Carmen Martin-Ruiz, Jedrzej Hoffmann, Evgeniya Shmeleva, Thomas von Zglinicki, Gavin Richardson, Lilia Draganova, Rachael Redgrave, Joanna Collerton, Helen Arthur, Bernard Keavney, Ioakim Spyridopoulos |
Jazyk: |
angličtina |
Rok vydání: |
2020 |
Předmět: |
|
Zdroj: |
npj Aging and Mechanisms of Disease, Vol 6, Iss 1, Pp 1-6 (2020) |
Druh dokumentu: |
article |
ISSN: |
2056-3973 |
DOI: |
10.1038/s41514-019-0041-y |
Popis: |
Abstract Cytomegalovirus (CMV) seropositivity in adults has been linked to increased cardiovascular disease burden. Phenotypically, CMV infection leads to an inflated CD8 T-lymphocyte compartment. We employed a 8-colour flow cytometric protocol to analyse circulating T cells in 597 octogenarians from the same birth cohort together with NT-proBNP measurements and followed all participants over 7 years. We found that, independent of CMV serostatus, a high number of CD27−CD28+ CD8 EMRA T-lymphocytes (TEMRA) protected from all-cause death after adjusting for known risk factors, such as heart failure, frailty or cancer (Hazard ratio 0.66 for highest vs lowest tertile; confidence interval 0.51–0.86). In addition, CD27−CD28+ CD8 EMRA T-lymphocytes protected from both, non-cardiovascular (hazard ratio 0.59) and cardiovascular death (hazard ratio 0.65). In aged mice treated with the senolytic navitoclax, in which we have previously shown a rejuvenated cardiac phenotype, CD8 effector memory cells are decreased, further indicating that alterations in T cell subpopulations are associated with cardiovascular ageing. Future studies are required to show whether targeting immunosenescence will lead to enhanced life- or healthspan. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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