Abstract
We report here on a new and quick procedure to isolate human (hu) CEA mouse anti CEA immune complexes of sera from patients admitted for immunoscintigraphy with radiolabeled monoclonal anti CEA antibody. This method employs rabbit anti mouse IgG immune affinity chromatography together with a commercial CEA-IRMA kit for the specific isolation of immune complexes. By applying this procedure we were able to show that immune complex formation increased in parallel to CEA serum concentration. The formation of immune complexes did not significantly affect tumor detection by immunoscintigraphy.
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Abbreviations
- CEA:
-
Carcinoembryonic antigen
- DTE:
-
Dithioerythritol
- EDTE:
-
Ethylenediaminetetraacetate
- PMSF:
-
phenylmethylsulfonyl flouride
- IRMA:
-
immunoradiometric assay
- p.i.:
-
post injectionem
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Baum, R.P., Driever, P.H., Drahovsky, D. et al. A rapid method for the determination of human CEA/mouse anti-CEA immune complexes in patients undergoing immunoscintigraphy. Eur J Nucl Med 15, 321–325 (1989). https://doi.org/10.1007/BF00435473
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DOI: https://doi.org/10.1007/BF00435473