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  • Title: Relationships between antinuclear and anti-Ro/SS-A antibodies in subacute cutaneous lupus erythematosus.
    Author: Deng JS, Sontheimer RD, Gilliam JN.
    Journal: J Am Acad Dermatol; 1984 Sep; 11(3):494-9. PubMed ID: 6384294.
    Abstract:
    A certain degree of confusion has arisen regarding the relationship between patients having subacute cutaneous lupus erythematosus (SCLE) and those with "antinuclear antibody-negative" systemic lupus erythematosus (ANA-negative SLE). One of the confusing issues relates to published differences in the autoimmune serologic findings of these two patient groups. In order to clarify this issue, we have screened the sera from thirty-seven patients with SCLE for the presence of fluorescent antinuclear antibodies (FANA) on two different substrates--human Hep-2 tissue culture cells and mouse kidney sections. In addition, these same sera were assayed for anti-Ro/SS-A precipitin antibodies. Seventy-eight percent of the sera were FANA-positive at a titer of 1:10 or greater when tested on human Hep-2 cells, whereas 76% were positive at a titer of 1:80 or greater. Fifty-one percent were positive on mouse kidney sections at a titer of 1:10 or greater, whereas 46% were positive at a titer of 1:20 or greater. Twenty-two percent of these sera were completely FANA-negative on both human and mouse substrates. None of these sera that were negative on both substrates contained anti-Ro/SS-A antibodies. However, 69% of the sera that were FANA-positive on both human and mouse substrates were found to have detectable anti-Ro/SS-A antibodies. Ninety percent of the SCLE sera that were FANA-positive on human Hep-2 cells, but negative on mouse kidney sections, contained anti-Ro/SS-A antibodies. These sera gave a speckle-like, or particulate, nuclear immunofluorescence staining pattern.(ABSTRACT TRUNCATED AT 250 WORDS)
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