Skip to main content
  • Published:

Clinical and Endocrine Response to Repeated Daily Administration of Endotoxin in Pigs

Abstract

Endotoxins of Gram-negative bacteria elicit biphasic fever, leukopenia, increased hypocalcemia, PGF release, and blood-circulation shock in the mammalian body (Fredriksson 1984). The toxicity of a given endotoxin decreases after repeated endotoxin administration. This tolerance appears to arise through both non-immunological regulatory and immunological pathways. This first phase of tolerance exhibits no inter-endotoxin specificity, and appears to be caused by the lipid A portion of the endotoxin molecule. The later phase of tolerance, however, is endotoxin specific and is probably in part evoked by an immunological tolerance to the O-antigen polysaccharide chain of the endotoxin (Lindberg et al 1983). The purpose of this project was to investigate the clinical and endocrine response to repeated daily administration of endotoxin in pigs.

References

  • Cort N, Kindahi H, Einarsson S: The effect of a Gram-negative bacterial endotoxin and cloprostenol on the plasma levels of 15-keto-13, 14- dihydro-PGF2a, progesterone, oestradiol-17 ß, oestrone sulfate and lutenizing hormone in non-pregnant and 60 days pregnant gilts., Anim. Reprod. Sei. 1986, 10, 147–162.

    CAS  Google Scholar 

  • Fredriksson G: Some reproductive and clinical aspects of endotoxins in cows with special emphasis on the role of prostaglandins. Acta vet. scand. 1984, 25, 365–377.

    CAS  PubMed  Google Scholar 

  • Lindberg A, Greisman S, Svensson S: Induction of endotoxin tolerance with non-pyrogenic O-antigenic oligosaccharide - protein conjugates. Infect. Immun. 1983, 40, 888–895.

    Article  Google Scholar 

  • Madonna GS, Peterson JE, Ribi EE, Vogel SN: Early-phase endotoxin tolerance: Induction by a detoxified lipid A derivative, monophosphoryl lipid A. Infect. Immun. 1986, 52, 6–11.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Yagoda, C., Ann-Christin, Bylund-Fellenius et al. Clinical and Endocrine Response to Repeated Daily Administration of Endotoxin in Pigs. Acta Vet Scand 29, 267–269 (1988). https://doi.org/10.1186/BF03548383

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1186/BF03548383