Sera From Anti-Jo-1-Positive Patients With Polymyositis and Interstitial Lung Disease Induce Expression of Intercellular Adhesion Molecule 1 in Human Lung Endothelial Cells

Sevim Barbasso Helmers, Pernilla Englund, Marianne Engstrom, Erik Ahlin, Maryam Fathi, Sabina Janciauskiene, Mikael Heimburger, Johan Ronnelid, Ingrid E. Lundberg

    Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

    24 Citeringar (SciVal)

    Sammanfattning

    Objective. To investigate whether sera or purified IgG from patients with polymyositis (PM) and patients with dermatomyositis (DM), with or without interstitial lung disease (ILD), can activate endothelial cells (ECs). Methods. Patients' sera were selected based on the presence or absence of anti-Jo-1, anti-SSA, or anti-U1 small nuclear RNP autoantibodies. The presence of autoantibodies was determined by line blot assays. Cultured human microvascular ECs derived from lung tissue (HMVEC-L) were incubated with sera or purified IgG from 22 patients with PM, 7 patients with DM, and 1.0 healthy individuals as controls. Assessment of intercellular adhesion molecule 1 (ICAM-1) expression was conducted by immunofluorescence (n = 22) and by cell-based enzyme-linked immunosorbent assay (ELISA) (n = 20). Serum levels of soluble ICAM-1 (sICAM-1) were determined by ELISA. Results. Sera from PM patients with ILD who were positive for anti-Jo-1 autoantibodies had a significantly stronger effect on the expression of ICAM-1 by HMVEC-L in comparison with sera from healthy controls and patients with other autoantibodies. Purified IgG did not induce ICAM-1 expression. Higher serum levels of sICAM-1 were found in patients with myositis compared with healthy controls. Conclusion. EC activation with ICAM-1 expression could contribute to the multiorgan involvement, including the development of myositis and ILD, in patients carrying anti-Jo-1 autoantibodies. The EC-activating factors are not the autoantibodies themselves, but might be systemic factors associated with these autoantibodies.
    Originalspråkengelska
    Sidor (från-till)2524-2530
    TidskriftArthritis and Rheumatism
    Volym60
    Utgåva8
    DOI
    StatusPublished - 2009

    Ämnesklassifikation (UKÄ)

    • Reumatologi och inflammation

    Fingeravtryck

    Utforska forskningsämnen för ”Sera From Anti-Jo-1-Positive Patients With Polymyositis and Interstitial Lung Disease Induce Expression of Intercellular Adhesion Molecule 1 in Human Lung Endothelial Cells”. Tillsammans bildar de ett unikt fingeravtryck.

    Citera det här