Granulocyte aggregation as a manifestation of membrane interactions with complement: possible role in leukocyte margination, microvascular occlusion, and endothelial damage.

Abstract:

:Activation products of the terminal complement cascade potently affect granulocyte function, inducing, for example, their migration toward (chemotaxis), and adherence to (opsonization), microbes, and stimulating their production of microbicidal oxygen radicals such as superoxide anion, and the like. We present studies that demonstrate that a C5-derived peptide, probably C5a, is a potent promoter of granulocyte and monocyte adhesion to endothelium (margination) and, in addition, causes granulocyte autoaggregation in vitro and in vivo. Although possibly beneficial by producing phagocyte clumps to mechanically entrap unwanted microbes, such aggregates may be deleterious, particularly if sustained, especially in the lung.

journal_name

Semin Hematol

journal_title

Seminars in hematology

authors

Craddock PR,Hammerschmidt DE,Moldow CF,Yamada O,Jacob HS

subject

Has Abstract

pub_date

1979-04-01 00:00:00

pages

140-7

issue

2

eissn

0037-1963

issn

1532-8686

pii

0037-1963(79)90013-1

journal_volume

16

pub_type

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