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  • Title: Antiendothelial cell antibodies can be cytotoxic to endothelial cells without cytokine pre-stimulation and correlate with ELISA antibody measurement in Kawasaki disease.
    Author: Kaneko K, Savage CO, Pottinger BE, Shah V, Pearson JD, Dillon MJ.
    Journal: Clin Exp Immunol; 1994 Nov; 98(2):264-9. PubMed ID: 7955532.
    Abstract:
    To confirm the presence of antiendothelial cell antibodies (AECA) and study the clinical value of their measurement in Kawasaki disease (KD), sera from patients with KD were assessed for binding to human umbilical vein endothelial cells (HUVEC) using a cellular based ELISA, and for complement-mediated cytotoxicity using 111In-labelled HUVEC. In the ELISA assay, IgM AECA were detected in 16/22 sera, whereas IgG AECA were only present in one out of 19 sera. There was a significant difference in IgM AECA titres when comparing patients with controls. Eight out of 16 sera showed cytotoxicity against HUVEC, and this was significantly enhanced when HUVEC were pretreated with tumour necrosis factor (TNF). IgM AECA titres measured by ELISA were positively correlated with their cytotoxicity. The findings suggest that IgM class AECA in sera from patients with KD are detectable by ELISA method, and that some of these antibodies, 50% in this study, can mediate complement-dependent cytotoxicity against endothelial cells.
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