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Related Experiment Videos

Immunologic abnormalities in idiopathic Raynaud's phenomenon.

H M Moutsopoulos, S Constantopoulos, L H Gerber

    Clinical and Experimental Rheumatology
    |January 1, 1983
    PubMed
    Summary

    Idiopathic Raynaud's phenomenon often shows autoimmune markers, while secondary Raynaud's phenomenon has higher circulating immune complexes. These findings in Raynaud's patients did not link to lung issues.

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    Area of Science:

    • Immunology
    • Rheumatology
    • Autoimmune Diseases

    Background:

    • Raynaud's phenomenon is a vascular disorder characterized by exaggerated vasoconstriction.
    • Idiopathic and secondary forms of Raynaud's phenomenon exist, with differing underlying causes.
    • Autoimmune markers and immune complexes are implicated in various autoimmune conditions.

    Purpose of the Study:

    • To investigate serologic markers, including immunoglobulin levels, autoantibodies, and circulating immune complexes, in patients with idiopathic Raynaud's phenomenon.
    • To compare the incidence of circulating immune complexes in patients with idiopathic versus secondary Raynaud's phenomenon.
    • To determine if serologic abnormalities in idiopathic Raynaud's phenomenon correlate with asymptomatic pulmonary involvement.

    Main Methods:

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    • Sera from 14 patients with idiopathic Raynaud's phenomenon were analyzed for immunoglobulin levels and autoantibodies.
    • Circulating immune complexes were quantified in sera from 14 patients with idiopathic Raynaud's phenomenon.
    • Circulating immune complexes were also quantified in sera from 17 patients with secondary Raynaud's phenomenon.

    Main Results:

    • Over half of patients with idiopathic Raynaud's phenomenon exhibited serologic markers indicative of autoimmune disease.
    • The incidence of circulating immune complexes was significantly higher in patients with secondary Raynaud's phenomenon (52%) compared to those with idiopathic Raynaud's phenomenon (10%).
    • No correlation was found between serologic abnormalities and asymptomatic pulmonary involvement in patients with idiopathic Raynaud's phenomenon.

    Conclusions:

    • Idiopathic Raynaud's phenomenon is frequently associated with serologic markers of autoimmune disease.
    • Secondary Raynaud's phenomenon demonstrates a higher prevalence of circulating immune complexes than the idiopathic form.
    • The presence of autoimmune markers in idiopathic Raynaud's phenomenon does not appear to be linked to subclinical pulmonary disease.