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Correlation of interleukin-2 and soluble interleukin-2 receptor with clinical activity of multiple sclerosis.
  1. M K Sharief,
  2. E J Thompson
  1. Department of Clinical Neurochemistry, National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.


    Concentrations of interleukin-2 (IL-2) and soluble IL-2 receptor (sIL-2R) in serum and CSF samples were measured in 63 patients with multiple sclerosis (MS) to evaluate their usefulness as markers of disease activity. CSF concentrations of IL-2 and sIL-2R were significantly higher in MS relapse compared with MS patients in remission or with control subjects. These concentrations correlated with the clinical score by which disease severity was assessed, with the number of relapses per year, and with the total disease duration. Furthermore, there was evidence of intrathecal release of IL-2 and sIL-2R in clinically active MS. The results extend the notion that an activated cellular immune state parallels the evolution of the pathological process in MS and suggest that measurement of IL-2 and sIL-2R concentrations may provide an objective marker of disease activity in patients with MS.

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