| Literature DB >> 9389739 |
V Modur1, Y Li, G A Zimmerman, S M Prescott, T M McIntyre.
Abstract
Endothelial cells initiate the inflammatory response by recruiting and activating leukocytes. IL-6 is not an agonist for this, but we found soluble IL-6 receptor alpha-subunit (IL-6Ralpha), with their constitutive IL-6 synthesis, stimulated endothelial cells to synthesize E-selectin, intracellular adhesion molecule-1, vascular cellular adhesion molecule-1, IL-6, and IL-8, and to bind neutrophils. Neutrophils express significant amounts of IL-6Ralpha and upon stimulation shed it: this material activates endothelial cells through a newly constituted IL-6 receptor. Retrograde signaling from PMN activated in the extravascular compartment to surrounding endothelial cells will recruit more and a wider variety of leukocytes. The limiting signal is a soluble receptor, not a cytokine.Entities:
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Year: 1997 PMID: 9389739 PMCID: PMC508479 DOI: 10.1172/JCI119821
Source DB: PubMed Journal: J Clin Invest ISSN: 0021-9738 Impact factor: 14.808