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[Endothelin-1 in systemic sclerosis].

M E Secchi1, A Sulli, C Pizzorni

  • 1U.O.C. Clinica Reumatologica, Dipartimento di Medicina Interna Università degli Studi di Genova, Genova, Italia. secchime@yahoo.it

Reumatismo
|July 3, 2007
PubMed
Summary
This summary is machine-generated.

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Endothelin-1 (ET-1) plasma levels are elevated in primary Raynaud's phenomenon (PRP) and secondary Raynaud's phenomenon (SRP). Higher ET-1 levels are observed in patients with advanced microvascular damage patterns in systemic sclerosis (SSc).

Area of Science:

  • Vascular Biology and Medicine
  • Rheumatology and Immunology
  • Dermatology and Cutaneous Biology

Context:

  • Primary Raynaud's phenomenon (PRP) and secondary Raynaud's phenomenon (SRP) are conditions characterized by peripheral vasospasm.
  • Systemic sclerosis (SSc) is an autoimmune disease often associated with significant microvascular damage.
  • Endothelin-1 (ET-1) is a potent vasoconstrictor implicated in various vascular pathologies.

Purpose:

  • To evaluate plasma endothelin-1 (ET-1) levels in patients with primary Raynaud's phenomenon (PRP) and secondary Raynaud's phenomenon (SRP) associated with systemic sclerosis (SSc).
  • To investigate the relationship between ET-1 levels and the pattern of peripheral microvascular damage in SSc patients, as assessed by nailfold videocapillaroscopy (NVC).

Summary:

  • Plasma ET-1 levels were significantly higher in both PRP and SRP patients compared to healthy controls.

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  • No significant difference in ET-1 levels was found between PRP and SRP patients.
  • SSc patients with the 'Late' pattern of NVC-identified microvascular damage exhibited higher ET-1 levels compared to those with 'Early' or 'Active' patterns, and these levels were significantly higher than in controls.

    • Impact:

    • These findings support the role of elevated ET-1 in the pathophysiology of both PRP and SRP.
    • The association of higher ET-1 levels with advanced microangiopathy in SSc suggests ET-1 may contribute to fibrotic changes in later disease stages.
    • This research highlights ET-1 as a potential biomarker for microvascular complications in SSc and a target for therapeutic interventions.