Modulation of neutrophil functions by activated platelet release factors.

Abstract:

:Platelets activated with physiological agonists, such as thrombin, ADP, or collagen, released products able to modulate neutrophil functions. In particular, platelet supernatant contained an inhibitor of superoxide anion generation induced by phorbol ester and a chemotactic factor for human neutrophils. The proteolytic digestion of platelet supernatant completely abrogated chemotactic activity without interfering with the inhibitory effect, indicating the presence of different molecules involved in the modulation of different neutrophil functions. This was further confirmed by the pretreatment of platelets with aromatic benzamidine which abolished chemotactic activity, but did not affect superoxide inhibition of neutrophils. This report provides evidence for interaction of platelets and inflammatory cells, suggesting that platelets are able to induce accumulation of neutrophils and control their respiratory burst, which also has a critical role in tissue damaging in inflammation.

journal_name

Inflammation

journal_title

Inflammation

authors

Spisani S,Giuliani AL,Cavalletti T,Zaccarini M,Milani L,Gavioli R,Traniello S

doi

10.1007/BF00918954

keywords:

subject

Has Abstract

pub_date

1992-04-01 00:00:00

pages

147-58

issue

2

eissn

0360-3997

issn

1573-2576

journal_volume

16

pub_type

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