✦ LIBER ✦

THE THERMAL POTENTIATION OF ACETAMINOPHEN-INHIBITED PMN OXIDATIVE METABOLISM IN VITRO

✍ Scribed by Ehsan Ali Shalabi; Ali Sulaiman Al-Tuwaijri

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 493 KB
Volume: 17
Category: Article
ISSN: 0142-2782
DOI: 10.1002/(sici)1099-081x(199608)17:6<501::aid-bdd968>3.0.co;2-1

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✦ Synopsis

The effect of high temperatures (39, 41, and 43 "C) on acetaminophen (AM-) induced inhibition of the oxidative respiratory burst of polymorphonuclear leukocytes (PMNs) in vitro has been examined. Whole blood or isolated human PMNs were exposed to various temperatures in vitro in the presence or absence of AM for 0-90min. Phagocyte membrane-bound NADPH oxidase was studied using the luminol chemiluminescence (CL) response and the superoxide dismutase inhibitable reduction of femcytochrome C. The NADPH oxidase was stimulated by phorbol myristate acetate (PMA). The results showed that high temperatures (39-43 "C) potentiate the AM inhibitory effect on CL peak response of phagocytes in a temperature-dependent manner. Furthermore, the inhibition of superoxide (0,) production induced by AM was potentiated by incubating the cells at 39 or 43°C at different time intervals. These studies suggest that high temperatures significantly potentiate the AM inhibitory effect on oxidative metabolism of PMNs in vitro. These actions of AM may influence the outcome in patients with infectious febrile conditions.

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