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Flow cytometric determination of circulating immune complexes with the indirect granulocyte phagocytosis test

  • L.W.M.M. Terstappen
  • , B.G. de Grooth
  • , G.M.J. Nolten
  • , C.H.H. ten Napel
  • , W. van Berkel
  • , J. Greve

Research output: Contribution to journalArticleAcademic

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Abstract

A method for the determination of circulating immune complexes (CIC) was adapted for flow cytometric analysis. Human granulocytes were used to phagocytose IgG-bearing CIC of serum from systemic lupus erythematosus (SLE) patients. A method for labeling the phagocytosed CIC with FITC-conjugated anti-human IgG was developed where the granulocytes remain in suspension during fixation and labeling. The fluorescence per cell, measured with a flow cytometer, is a measure of the total amount of the phagocytosed IgG. The results indicate that a rapid and quantitative method for the detection and measurement of phagocytosed CIC is possible using the flow cytometer.
Original languageEnglish
Pages (from-to)316-320
JournalCytometry
Volume6
Issue number4
DOIs
Publication statusPublished - 1985

Keywords

  • Granulocytes
  • Phagocytosis
  • Circulating immune complexes
  • Flow cytometry

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