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Diminished production of TWEAK by the peripheral blood mononuclear cells is associated with vascular involvement in

Marek Bielecki1, Krzysztof Kowal, Anna Lapinska

  • 1Department of Orthopedics, Medical University of Bialystok, Bialystok, Poland.

Folia Histochemica Et Cytobiologica
|February 19, 2010
PubMed

Insights

Tumor necrosis factor-like weak inducer of apoptosis (TWEAK) production is reduced in systemic sclerosis (SSc) patients, particularly those with severe microvascular damage. This diminished TWEAK may contribute to vascular injury in SSc.

Area of Science:

  • Immunology
  • Rheumatology
  • Vascular Biology

Background:

  • Systemic sclerosis (SSc) is characterized by vasculopathy and fibrosis.
  • The cytokine TNF-like weak inducer of apoptosis (TWEAK) regulates angiogenesis and tissue remodeling.
  • TWEAK's role in SSc pathogenesis is unexplored.

Purpose of the Study:

  • To investigate TWEAK production in SSc patients.
  • To correlate TWEAK levels with SSc clinical features.
  • To explore TWEAK's potential role in SSc vascular injury.

Main Methods:

  • ELISA was used to measure TWEAK production by peripheral blood mononuclear cells (PBMC).
  • PBMC were isolated from 24 SSc patients and 14 healthy controls.
  • TWEAK production was correlated with capillaroscopic patterns and Raynaud's phenomenon duration.

Main Results:

  • TWEAK production by PBMC was significantly lower in SSc patients with severe microvascular damage ('active' capillaroscopic pattern) compared to those with less severe damage ('slow' pattern) and healthy subjects.
  • Reduced TWEAK production inversely correlated with the duration of Raynaud's phenomenon.
  • A non-significant trend towards lower TWEAK production was observed in SSc patients with interstitial lung disease.

Conclusions:

  • Diminished TWEAK production may contribute to vascular injury in systemic sclerosis.
  • Further research is needed to determine if TWEAK is a viable therapeutic target for SSc.

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