Summary
Two monoclonal antibodies (mAbs) designated 2A1 and 6A4 which had been shown to be directed againstPseudomonas aeruginosa outer membrane lipoprotein I were tested in cyclophosphamide treated mice for their protective ability againstP. aeruginosa infection. Pretreatment of mice with either 2 mg of 2A1 or 4 mg of 6A4 in combination with lethally irradiated human leucocytes reduced the mortality after subsequent subcutaneous injection of 100 livingP. aeruginosa organisms to 50% of the controls. Without leucocytes only mAb 2A1 (isotype IgG2b) showed protection (47%). Irradiated leucocytes alone without mAb did not protect the mice significantly from fatalP. aeruginosa infection.
Zusammenfassung
Zwei monoklonale Antikörper (2A1, 6A4) gegen Lipoprotein I vonPseudomonas aeruginosa wurden auf ihre protektive Wirkung gegenP. aeruginosa-Infektionen in mit Cyclophosphamid behandelten Mäusen getestet. Die Gabe von 2 mg 2A1 oder 4 mg 6A4 zusammen mit bestrahlten (25 Gy) humanen Leukozyten reduzierte die Mortalität der Mäuse nach Injektion von 100 lebendenP. aeruginosa-Keimen auf 50% der Kontrollen. Ohne Leukozyten zeigte nur der Antikörper 2A1 (Isotyp IgG2b) eine protektive Wirkung (47%). Mit 25 Gy bestrahlte Leukozyten alleine zeigten keine protektive Wirkung.
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Rahner, R., Eckhardt, A., von Specht, B.U. et al. Protection of immunosuppressed mice against infection with Pseudomonas aeruginosa by monoclonal antibodies to outer membrane protein OprI. Infection 18, 242–245 (1990). https://doi.org/10.1007/BF01643398
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DOI: https://doi.org/10.1007/BF01643398