Correlation between inhibited alternative complement activity and the protective effect induced by Nocardia lysozyme digest (NLD) during Klebsiella pneumoniae infection in mice.

N Ivanovska; P Georgieva; R Barot-Ciorbaru

doi:10.1016/s0192-0561(96)00048-3

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Correlation between inhibited alternative complement activity and the protective effect induced by Nocardia lysozyme digest (NLD) during Klebsiella pneumoniae infection in mice.

N Ivanovska·P Georgieva·R Barot-Ciorbaru

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Abstract

Nocardia lysozyme digest (NLD) was administered intraperitoneally (i.p.) at a dose of 500 micrograms/kg to normal and immunosuppressed mice for 3 consecutive days prior to inoculation with Klebsiella pneumoniae. A protective effect was observed when the pathogen was injected subcutaneously and intravenously, as opposed to an aggravating effect obtained in the case of intraperitoneal inoculation The i.p. administration of NLD partially restored the immunosuppression caused by cyclophosphamide but did not change cobra venom-induced deterioration of the infection. The results obtained could be regarded as a consequence of the lowered alternative pathway serum complement activity and the crucial role of the diminished level of complement in the peritoneal cavity.

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Adjuvants, Immunologic Animals Bacterial Proteins Cell Extracts Complement Inactivator Proteins Complement Pathway, Alternative Klebsiella Infections Klebsiella pneumoniae Male Mice Mice, Inbred ICR Muramidase Nocardia Journal Article Research Support, Non-U.S. Gov't

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N Ivanovska, P Georgieva, R Barot-Ciorbaru. Correlation between inhibited alternative complement activity and the protective effect induced by Nocardia lysozyme digest (NLD) during Klebsiella pneumoniae infection in mice.. https://doi.org/10.1016/s0192-0561(96)00048-3

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