Abstract:
:The severity of influenza increases with age, with worse disease in aged males than females. Testosterone concentrations decline with age in males, which may impact influenza pathogenesis. Aged male mice were treated with testosterone or placebo and outcomes during influenza A virus (IAV) infection were compared with adult male mice. Aged males experienced greater morbidity and mortality than adult males, which was partially improved by testosterone treatment of aged males. Aged males cleared IAV from lungs slower than adult males, regardless of testosterone treatment. As compared with adult males, aged males experienced pulmonary, but not systemic, cytokine dysregulation, and delayed influx and contraction of IAV-specific CD8+ T cells in the lungs. Testosterone treatment in aged males partially restored pulmonary cytokine responses to levels consistent with adult males but did not alter the age-associated changes in IAV-specific CD8+ T cells. Testosterone only modestly improves outcomes of influenza in aged males.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Vom Steeg LG,Attreed SE,Zirkin B,Klein SLdoi
10.1016/j.cellimm.2019.103988subject
Has Abstractpub_date
2019-11-01 00:00:00pages
103988eissn
0008-8749issn
1090-2163pii
S0008-8749(19)30231-Xjournal_volume
345pub_type
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