Journal of Okayama Medical Association
Published by Okayama Medical Association

Full-text articles are available 3 years after publication.

モルモット腹腔細胞のFc receptorを利用した血清中免疫複合体の定量 第1編 免疫複合体測定方法の確立

斉藤 良仁 岡山大学医学部第3内科学教室
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A new method for detecting circulating IgG immune complexes (IC) using guinea pig peritoneal exudate cells (PEC) has been established. Binding of (125)I BSA-anti BSA IgG IC to PEC was inhibited by serum containing IC in a dose dependent fashion. A 100μl aliquot of PEC suspension (2.5X10(6) cells/ml) was preincubated with diluted five fold serum for 60 minutes at 4℃. After washing pretreated PEC 3 times, 100μl of (125)I labelled 3 times antigen excess-IC was added and incubated for 90 minutes at 4℃. At the end of incubation, the suspension was centrifuged at 10,000G for 1 minute, and the radioactivity of the pellet was measured. This method mainly utilizes the reaction between Fc receptors on PEC and the Fc portion of the complexed IgG.
immune complex
guinea pig peritoneal exudate cell
Fc receptor