Biomarkers of systemic inflammation and risk of incident, symptomatic benign prostatic hyperplasia: Results from the prostate cancer prevention trial

Jeannette M. Schenk, Alan R. Kristal, Marian L. Neuhouser, Catherine M. Tangen, Emily White, Daniel W. Lin, Mario Kratz, Ian M. Thompson

Research output: Contribution to journalArticle

69 Scopus citations

Abstract

The authors conducted a nested case-control study of serum inflammatory markers and risk of symptomatic benign prostatic hyperplasia (BPH), using data from the placebo arm of the Prostate Cancer Prevention Trial (1993-2003). Incident BPH (n = 676) was defined as treatment, report of 2 International Prostate Symptom Score (IPSS) values >14, or 2 increases of ≥5 from baseline values with at least one value ≥12. Controls (n = 683) were men who reported no BPH treatment or IPSS values >7 over the 7-year trial. Baseline serum was analyzed for C-reactive protein, tumor necrosis factor α (monomer), soluble tumor necrosis factor receptors I and II (sTNF-RI and sTNF-RII), interleukin 6, and interferon γ. Controlled for age and race, a high C-reactive protein concentration was associated with increased BPH risk (for quartile 4 vs. quartile 1, odds ratio (OR) = 1.40, 95% confidence interval (CI): 1.04, 1.88); this was attenuated after control for body mass index (OR = 1.30, 95% CI: 0.95, 1.75). Low sTNF-RII and high interleukin 6 concentrations were associated with increased BPH risk (for quartile 4 vs. quartile 1, sTNF-RII: OR = 0.61, 95% CI: 0.46, 0.82; interleukin 6: OR = 1.79, 95% CI: 1.32, 2.42); these associations were only in men aged <65 years. Results suggest that systemic inflammation or lower levels of soluble receptors that bind inflammatory cytokines increase BPH risk.

Original languageEnglish (US)
Pages (from-to)571-582
Number of pages12
JournalAmerican journal of epidemiology
Volume171
Issue number5
DOIs
StatePublished - Mar 2010

Keywords

  • Inflammation
  • Obesity
  • Prostatic hyperplasia

ASJC Scopus subject areas

  • Epidemiology

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