Tuftsin stimulates the release of oxygen radicals and thromboxane from macrophages.

Abstract:

:The physiologically occurring tetrapeptide, tuftsin (Thr-Lys-Pro-Arg), was examined for its effects on guinea pig peritoneal macrophages. Adherent macrophages (møo) were exposed to tuftsin at concentrations ranging from 10(8) to 10(6) M, and the release of oxygen radicals and the arachidonic acid cyclo-oxygenation product, thromboxane B2 (TXB2), was studied. Tuftsin causes both albumin-elicited and C. parvum-activated møo to set free superoxide anion (O2) and hydrogen peroxide (H2O2). It also stimulates the liberation of TXB2 from albumin-elicited møo. The demonstrated induction of the release of toxic oxygen species from møo by tuftsin may explain how tuftsin-augmented møo-mediated cytotoxicity is accomplished.

journal_name

Immunol Lett

journal_title

Immunology letters

authors

Hartung HP,Toyka KV

doi

10.1016/0165-2478(83)90021-4

subject

Has Abstract

pub_date

1983-01-01 00:00:00

pages

1-6

issue

1

eissn

0165-2478

issn

1879-0542

pii

0165-2478(83)90021-4

journal_volume

6

pub_type

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