Phenotype of Innate Immune Cells in Uveitis Associated with Axial Spondyloarthritis- and Juvenile Idiopathic Arthritis-associated Uveitis

Ocul Immunol Inflamm. 2021 Aug 18;29(6):1080-1089. doi: 10.1080/09273948.2020.1715449. Epub 2020 Mar 11.


Purpose: To analyze circulating immune cells in patients with anterior uveitis (AU) associated to axial spondyloarthritis (SpA), or juvenile idiopathic arthritis (JIA).Methods: Venous blood samples were collected from healthy controls (n = 16), and either SpA (n = 19) or JIA (n = 23) patients with associated anterior uveitis (AU) during active flare, or after ≥3 months of inactivity. Frequencies of CD56+, MHC-I+, and S100A9+ monocytes, CCR7+ dendritic cells, CD56+dim natural killer (NK) cells and CD3+CD56bright T-cells were analyzed via flow cytometry. Serum S100A8/A9 levels were determined via ELISA.Results: SpA patients showed a reduced frequency of CD56+dim NK cells during uveitis activity, a constitutively activated monocyte phenotype, and elevated S100A8/A9 serum levels. In contrast, JIAU patients showed elevated frequencies of CD56+ monocytes and CCR7+ DC.Conclusion: Phenotype of peripheral immune cells differ between patients, probably contributing to different courses of acute onset AU in SpA and insidious onset AU in JIAU patients.Abbreviations: AU: anterior uveitis, AR: arthritis, JIA: juvenile idiopathic arthritis, SpA: axial spondyloarthritis.

Keywords: HLA-B27; axial spondyloarthritis; juvenile idiopathic arthritis; monocytes; uveitis.

MeSH terms

  • Adolescent
  • Adult
  • Arthritis, Juvenile / immunology*
  • Axial Spondyloarthritis / immunology*
  • Calgranulin A / blood
  • Calgranulin B / blood
  • Child
  • Dendritic Cells / immunology
  • Enzyme-Linked Immunosorbent Assay
  • Female
  • Flow Cytometry
  • Humans
  • Immunity, Innate / physiology*
  • Killer Cells, Natural / immunology
  • Male
  • Middle Aged
  • Monocytes / immunology
  • Phenotype
  • T-Lymphocytes / immunology
  • Uveitis, Anterior / immunology*


  • Calgranulin A
  • Calgranulin B
  • S100A8 protein, human
  • S100A9 protein, human