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Cited by 357

The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Long-Term Cytomegalovirus Infection Leads to Significant Changes in the Composition of the CD8+T-Cell Repertoire, Which May Be the Basis for an Imbalance in the Cytokine Production Profile in Elderly Persons

Open access
Almanzar, Giovanni, Schwaiger, Susanne, Jenewein, Brigitte, Keller, Michael, Herndler-Brandstetter, Dietmar, Würzner, Reinhard, Schönitzer, Diether, Grubeck-Loebenstein, Beatrix·2005·Journal of Virology

Abstract

In spite of the present belief that latent cytomegalovirus (CMV) infection drives CD8+T-cell differentiation and induces premature immune senescence, no systematic studies have so far been performed to compare phenotypical and functional changes in the CD8+T-cell repertoire in CMV-infected and noninfected persons of different age groups. In the present study, number, cytokine production, and growth potential of naïve (CD45RA+CD28+), memory (CD45RA−CD28+), and effector (CD45RA+CD28−or CD45RA−CD28−) CD8+T cells were analyzed in young, middle-aged, and elderly clinically healthy persons with a positive or negative CMV antibody serology. Numbers and functional properties of CMVpp65 495-503-specific CD8+T cells were also studied. We demonstrate that aging as well as CMV infection lead to a decrease in the size of the naïve CD8+T-cell pool but to an increase in the number of CD8+effector T cells, which produce gamma interferon but lack substantial growth potential. The size of the CD8+memory T-cell population, which grows well and produces interleukin-2 (IL-2) and IL-4, also increases with aging, but this increase is missing in CMV carriers. Life-long latent CMV infection seems thus to diminish the size of the naïve and the early memory T-cell pool and to drive a Th1 polarization within the immune system. This can lead to a reduced diversity of CD8 responses and to chronic inflammatory processes which may be the basis of severe health problems in elderly persons.

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Crossref · 10.1128/jvi.79.6.3675-3683.2005

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Metadata

Authors
Almanzar, G., Schwaiger, S., Jenewein, B., Keller, M., Herndler-Brandstetter, D., Würzner, R., Schönitzer, D., & Grubeck-Loebenstein, B.
Venue
Journal of Virology
Published
2005-03-15
Volume
79
Issue
6
Pages
3675-3683
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2103059589
Cited by
357
References
4
FWCI
14.40
Type
journal article
Language
en
Open access
green

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