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Vascular changes in morphea.

T Kobayasi, J Serup

    Acta Dermato-Venereologica
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Vascular changes in morphea involve pericyte activation, particularly in inflammatory and sclerotic skin areas. These findings highlight pericytes as key to morphea

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    Area of Science:

    • Dermatology
    • Vascular Biology
    • Pathology

    Background:

    • Morphea is a connective tissue disease characterized by localized sclerotic skin lesions.
    • The underlying vascular changes in morphea are not fully understood.

    Purpose of the Study:

    • To investigate the specific vascular alterations in morphea skin biopsies.
    • To identify the role of pericytes in the pathogenesis of morphea.

    Main Methods:

    • Analysis of skin biopsies from 14 morphea patients.
    • Histopathological examination of small vessels, focusing on pericytes, endothelial cells, and infiltrating inflammatory cells.

    Main Results:

    • Three distinct patterns of vascular changes were observed, primarily involving pericytes.

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  • Pattern 1: Stimulated endothelial cells, thickened walls, macrophages, and mast cells (common in uninvolved skin).
  • Patterns 2 & 3: Thickened basal lamina and activated pericytes with lymphocytes/plasma cells (found in inflammatory/sclerotic areas).

    • Conclusions:

    • Activated pericytes are a critical feature of vascular changes in morphea.
    • These pericyte alterations are associated with inflammatory and fibrotic processes in affected skin.
    • Muscular vessels likely participate in the fibrotic development of morphea.