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Indirect evidence of cell wall alterations in pseudomonas aeruginosa by immunoglobulin preparations

Indirekter Nachweis der Zellwandalteration bei Pseudomonas aeruginosa durch Immunglobulinpräparate

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Summary

Ten strains ofPseudomonas aeruginosa isolated from different clinical sources were incubated with immunoglobulin preparations for i.v. use. This resulted in the release of β-lactamases normally cell-bound in the periplasmic space. The amount of released β-lactamases — depending on the degree of cell wall alteration — was spectrophotometrically determined by the use of nitrocefin as an indicator substance. β-lactamase release varies according to strain specificity and depends on the chemical modification of the immunoglobulins used.

Zusammenfassung

Inkubation von zehn aus klinischem Material isoliertenPseudomonas aeruginosa-Stämmen mit i.v. applizierbaren Immunglobulinpräparaten führt zu einer Freisetzung sonst zellgebundener β-Laktamasen aus den Bakterien. Die Menge der freigesetzten β-Laktamasen ist abhängig vom Ausmaß der durch die Immunglobuline induzierten Zellwandalteration und läßt sich quantitativ spektrophotometrisch mit der Nitrocefin-Reaktion bestimmen; sie ist stammspezifisch unterschiedlich und abhängig von der chemischen Aufbereitung der Immunglobulinpräparate.

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Stübner, G. Indirect evidence of cell wall alterations in pseudomonas aeruginosa by immunoglobulin preparations. Infection 12, 223–224 (1984). https://doi.org/10.1007/BF01640910

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  • DOI: https://doi.org/10.1007/BF01640910

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