Abstract:
:We investigated whether healthy young (age ≤ 40) and elderly (age ≥ 65) people infected with cytomegalovirus (CMV) had similar levels of CD8(+) T cell cytokine production and proliferation in response to an immunodominant CMV pp65 peptide pool given the role of CD8(+) T cells in controlling viral infection and the association of CMV with immunosenescence. Plus, we determined the effects of aging and CMV-infectious status on plasma levels of IL-27, an innate immune cytokine with pro- and anti-inflammatory properties, as well as on its relationship to IFN-γ in that IL-27 can promote the production of IFN-γ. The results of our study show that young and elderly people had similar levels of CD8(+) T cell proliferation, and IFN-γ and TNF-α production in response to CMV pp65 peptides. Plasma levels of IL-27 were similar between the two groups although CMV-infected young and elderly people had a trend toward increased levels of IL-27. Regardless of aging and CMV-infectious status, plasma levels of IL-27 correlated highly with plasma levels of IFN-γ. These findings suggest the maintenance of CMV pp65-specific CD8(+) T cell proliferation and cytokine production with aging as well as the sustaining of circulatory IL-27 levels and its biological link to IFN-γ in young and elderly people irrespective of CMV infection.
journal_name
Cytokinejournal_title
Cytokineauthors
Shin MS,Lee JS,Lee N,Lee WW,Kim SH,Kang Idoi
10.1016/j.cyto.2012.11.024subject
Has Abstractpub_date
2013-02-01 00:00:00pages
485-90issue
2eissn
1043-4666issn
1096-0023pii
S1043-4666(12)00807-1journal_volume
61pub_type
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