Decreased cell proliferation and altered cytokine production in frail older adults

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63 Scopus citations


Background and aims: Frailty is a geriatric syndrome that predicts increased morbidity and mortality. In order to investigate specific immune system modulations that may contribute to frailty, eleven age- and sex-matched pairs of community-dwelling frail and non-frail older adults were identified. Methods: Peripheral blood mononuclear cells (PBMC) were isolated and PBMC proliferation and production of IL-6, tumor necrosis factor (TNF)-α, and IL-10 in the presence and absence of lipopolysaccharide (LPS) were examined. Results: We found that frail subjects had a significantly lower LPS-induced PBMC proliferation ratio compared with non-frail subjects (2.1±0.9 vs 3.1±1.9, p<0.03). In addition, frail subjects had higher IL-6 production by PBMC at 48 hours after LPS stimulation (35678±15637 vs 25178±6342 pg/mL, p<0.03). No significant differences were observed in TNF-α, and IL-10 production between groups. Conclusions: These results suggest that, compared with non-frail controls, frail older adults have both decreased LPS-induced proliferation and increased IL-6 production by PBMC.

Original languageEnglish (US)
Pages (from-to)249-252
Number of pages4
JournalAging Clinical and Experimental Research
Issue number3
StatePublished - Jun 2004


  • Frailty
  • Geriatric syndrome
  • IL-10
  • IL-6
  • PBMC proliferation
  • TNF-α

ASJC Scopus subject areas

  • Aging
  • Geriatrics and Gerontology


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