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[Vascular pathology in systemic scleroderma]

N G Guseva, R T Alekperov, T A Nevskaia

    Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
    |August 26, 2003
    PubMed

    Insights

    Vascular lesions in systemic scleroderma (SSC) are common and linked to disease severity. Capillary changes and elevated adhesion molecules like VCAM-1 indicate micro-angiopathy intensity and correlate with SSC clinical course.

    Area of Science:

    • Rheumatology
    • Vascular Biology
    • Dermatology

    Background:

    • Vascular lesions are a key feature of systemic scleroderma (SSC), yet their mechanisms remain understudied.
    • Current research often focuses broadly, necessitating detailed investigation into scleroderma-specific micro-angiopathy.
    • Understanding these vascular changes is crucial for correlating them with disease progression and clinical presentation.

    Purpose of the Study:

    • To investigate the structural-morphological and molecular underpinnings of micro-angiopathy in systemic scleroderma.
    • To correlate findings from capillaroscopy and serological markers with the clinical course of SSC.
    • To elucidate the relationship between vascular endothelium condition and disease activity.

    Main Methods:

    • Wide-field video-capillaroscopy of the nail bed (CNB) to assess structural capillary changes.
    • Quantitative immune-enzyme assays to measure soluble adhesion molecules: VCAM-1, ICAM-1, and P-selectin.
    • Morphological examination of dermal biopsies, including lymphocytic infiltration (CD3, CD4, CD8, CD20) and endothelial activation (ICAM-1).

    Main Results:

    • All SSC patients exhibited structural capillary changes, with variations correlating to clinical disease course.
    • Micro-angiopathy signs were present in 98% of patients, even in early stages.
    • Active disease courses showed more pronounced perivascular infiltration (predominantly CD4+ T-lymphocytes) and higher ICAM-1 expression.
    • Elevated VCAM-1, ICAM-1, and P-selectin levels were found in 80%, 45%, and 48% of patients, respectively.
    • VCAM-1 levels correlated significantly with disease activity and progression.

    Conclusions:

    • Structural capillary changes and micro-angiopathy are prevalent in SSC and closely linked to disease phenotype.
    • Serological markers (VCAM-1, ICAM-1, P-selectin) and morphological signs of vascular lesions reflect the intensity of micro-angiopathy.
    • These vascular markers demonstrate a strong correlation with the clinical course and activity of systemic scleroderma.

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