Abstract:
:Neutrophil accumulation is a hallmark of immune complex-mediated inflammatory disorders. Current models of neutrophil recruitment envision the capture of circulating neutrophils by activated endothelial cells. We now demonstrate that immobilized immune complexes alone support the rapid attachment of neutrophils, under physiologic flow conditions. Initial cell tethering requires the low-affinity Fc gamma receptor IIIB (Fc gamma RIIIB), and the beta(2) integrins are additionally required for the subsequent shear-resistant adhesion. The attachment function of Fc gamma RIIIB may be facilitated by its observed presentation on neutrophil microvilli. In vivo, in a model of acute antiglomerular basement membrane nephritis in which immune complexes are accessible to circulating neutrophils, Fc gamma RIII-deficient mice had a significant reduction in neutrophil recruitment. Thus, the interaction of immune complexes with Fc gamma RIII may mediate early neutrophil recruitment in immune complex-mediated inflammation.
journal_name
Immunityjournal_title
Immunityauthors
Coxon A,Cullere X,Knight S,Sethi S,Wakelin MW,Stavrakis G,Luscinskas FW,Mayadas TNdoi
10.1016/s1074-7613(01)00150-9keywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
693-704issue
6eissn
1074-7613issn
1097-4180pii
S1074-7613(01)00150-9journal_volume
14pub_type
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