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Clinical Trial
. 1991 Dec 7;338(8780):1423-4.
doi: 10.1016/0140-6736(91)92725-h.

Production of interleukin-1-receptor antagonist during experimental endotoxaemia

E V Granowitz  1 , A A Santos, D D Poutsiaka, J G Cannon, D W Wilmore, S M Wolff, C A Dinarello
Affiliations
Clinical Trial

Production of interleukin-1-receptor antagonist during experimental endotoxaemia

E V Granowitz et al. Lancet. .

Abstract

Interleukin-1 (IL-1) has been implicated in the pathogenesis of sepsis. IL-1-receptor antagonist (IL-1ra) is a naturally occurring inhibitor of IL-1 activity that competes with IL-1 for occupancy of cell-surface receptors but possesses no agonist activity. We induced endotoxaemia in 9 healthy human volunteers by injection of Escherichia coli endotoxin, and measured plasma concentrations of IL-1 and IL-1ra by radioimmunoassay during the next 24 h. Peak plasma concentrations of IL-1ra were about a hundred-fold greater than those of IL-1 beta. No IL-1 or IL-1ra were detectable in the plasma of 4 volunteers injected with saline. Our results suggest that the predominant natural response to endotoxin in man is the production of antagonist rather than agonist.

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