Increased serum levels of soluble tumor necrosis factor receptor-2 (sTNFR2) in patients with active toxoplasmic retinochoroiditis

Thais Fontes Bessa, Cynthia Azeredo Cordeiro, Roberto Martins Gonçalves, Lucy H. Young, Wesley R. Campos, Fernando Oréfice, Antônio L. Teixeira

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


This study aimed to investigate the serum levels of the cytokine TNF-α and its soluble receptors (sTNFR1 and sTNFR2) in patients with toxoplasmosis retinochoroidits (TR) and controls. 37 patients with TR and 30 subjects with positive serology for toxoplasmosis but without history and signs of uveitis were included in this study. Serum concentrations of TNF-α, sTNFR1, and sTNFR2 were determined by ELISA. Serum concentrations of TNF-α and sTNFR1 were similar in controls (mean ± SD median values; 56.57 ± 141.96 and 504.37 ± 163.87, respectively) and TR patients (mean ± SD values, 121.62 ± 217.56 and 511.15 ± 189.30, respectively). Serum concentrations of sTNFR2 were higher in the uveitis group when compared to the control group (respectively, mean ± SD values, 1734.84 ± 379.32 and 1442.75 ± 309.47; p=0.002). There was no association between the serum levels of the molecules and the time of first symptoms, severity of vitreous haze, size or localization of active lesions, levels of visual acuity, and presence of vasculitis. These results suggest that TR is associated with changes in the circulating levels of inflammatory biomarkers, but they are not correlated with local/ocular signs.

Original languageEnglish (US)
Pages (from-to)540-544
Number of pages5
JournalBrazilian Journal of Infectious Diseases
Issue number6
StatePublished - Nov 2012
Externally publishedYes


  • Soluble TNF receptors
  • TNF-alpha
  • Toxoplasmosis
  • Uveitis

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases


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