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Medical Microbiology and Immunology

, Volume 159, Issue 2, pp 141–150 | Cite as

Role of complement system in the endotoxicity-enhancing and endotoxin-detoxifying effect of serum

  • G. Füst
  • Gabriella Fóris
Article

Abstract

The effect of the incubation with serum on the toxicity of endotoxin was studied in adrenalectomized rats. The survival times of rats treated with a endotoxin-normal rat serum mixture after a brief incubation (1–2 min) was significantly shorter than the control values (endotoxin alone). However, after longer incubation periods (30–60 min) the average survival time was significantly longer than in the controls. The various “decomplementing” methods (heat inactivation, zymosan adsorption, C4-inactivator treatment) prevented both the endotoxicity-enhancing and the detoxifying effect of rat serum. Thus it seems probable that two complement-dependent processes acting in opposite directions take place in the circulation of endotoxin-treated animals: 1. generation of biologically active materials from late acting complement components and 2. detoxification of endotoxin. It was also shown that the activation of the late-acting complement components (C3-C9) by endotoxin increased by 100 times after adrenalectomy in rats.

Keywords

Opposite Direction Survival Time Incubation Period Active Material Complement System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1974

Authors and Affiliations

  • G. Füst
    • 1
    • 2
  • Gabriella Fóris
    • 1
  1. 1.National Institute of Public Health, and State Institute of PharmacyBudapest
  2. 2.Immunbiologische AbteilungState Institute of HygieneBudapest IXHungary

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