Correlation between testosterone and the inflammatory marker soluble interleukin-6 receptor in older men

  • Maggio M
  • Basaria S
  • Ble A
 et al. 
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CONTEXT: An age-associated decline in testosterone (T) levels and an increase in proinflammatory cytokines contribute to chronic diseases in older men. Whether and how these changes are related is unclear.

OBJECTIVE: We hypothesized that T and inflammatory markers are negatively correlated in older men.

DESIGN: This was a cross-sectional study.

SETTING: A population-based sample of older men was studied.

PARTICIPANTS AND MEASURES: After excluding participants taking glucocorticoids or antibiotics or those with recent hospitalization, 467 men, aged 65 yr or older, had complete determinations of total T, bioavailable T, SHBG, albumin, IL-6, soluble IL-6 receptor (sIL-6r), TNF-alpha, IL-1beta, and C-reactive protein.

RESULTS: After adjusting for potential confounders, sIL-6r was significantly and inversely correlated with total T (r = -0.20; P < 0.001) and bioavailable T (r = -0.12; P < 0.05). T was not correlated with any other inflammatory marker.

CONCLUSIONS: These preliminary findings suggest an inverse relationship between T and sIL-6r. Longitudinal studies are needed to establish the causality of this association.

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  • Marcello Maggio

  • Shehzad Basaria

  • Alessandro Ble

  • Fulvio Lauretani

  • Stefania Bandinelli

  • Gian Paolo Ceda

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