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Related Experiment Videos

Elevated circulating CD40L concentrations in patients with systemic sclerosis.

Kazuhiro Komura1, Shinichi Sato, Minoru Hasegawa

  • 1Department of Dermatology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.

The Journal of Rheumatology
|March 3, 2004
PubMed
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Serum soluble CD40L (sCD40L) levels are elevated in patients with systemic sclerosis (SSc), correlating with disease activity. This suggests CD40/CD40L interactions are a potential therapeutic target for SSc.

Area of Science:

  • Immunology
  • Rheumatology
  • Biochemistry

Background:

  • Soluble CD40L (sCD40L)/CD40 interactions regulate B cell activation, fibrosis, and endothelial adhesion molecule expression.
  • These processes are characteristic of systemic sclerosis (SSc).

Purpose of the Study:

  • To determine serum concentrations of sCD40L in patients with SSc.
  • To investigate the correlation between sCD40L levels and disease activity in SSc.

Main Methods:

  • Serum sCD40L levels were measured using ELISA in 52 Japanese patients with SSc (24 limited cutaneous SSc, 28 diffuse cutaneous SSc) and 20 patients with systemic lupus erythematosus (SLE).
  • A retrospective longitudinal study was conducted on 71 serum samples from 18 SSc patients.
  • sCD40L levels were compared between SSc patients, SLE patients, and healthy controls.

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Main Results:

  • Serum sCD40L levels were significantly elevated in SSc patients compared to healthy controls and SLE patients.
  • sCD40L levels positively correlated with C-reactive protein levels in SSc patients.
  • Diffuse cutaneous SSc patients showed persistently elevated sCD40L, while limited cutaneous SSc patients had temporarily elevated levels early in the disease.

Conclusions:

  • Elevated serum sCD40L levels in SSc patients may correlate with disease activity.
  • CD40/CD40L interactions represent a potential therapeutic target for SSc.