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Journal of Experimental Medicine, Vol 168, 443-448, Copyright © 1988 by Rockefeller University Press
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S Okusawa, KB Yancey, JW van der Meer, S Endres, G Lonnemann, K Hefter, MM Frank, JF Burke, CA Dinarello and JA Gelfand
Department of Medicine, Tufts University, Boston, Massachusetts 02111.
We have demonstrated that purified C5a is a potent stimulus to human PBMC secretion of TNF-alpha, IL-1 beta, and IL-1 alpha, which proceeds in a dose-dependent fashion. At a given concentration of C5a, TNF-alpha and IL-1 beta secretion did not differ significantly; both were secreted in significantly greater quantity than IL-1 alpha. Clinical conditions such as Gram-positive and Gram-negative bacterial infections, trauma, and immune complex diseases activate complement. Through the mediation of TNF and IL-1 secreted in response to C5a, these diverse disorders can share common features of fever, coagulopathy, acute phase protein production, and disordered metabolism.
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