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Cytokine. 1994 Mar;6(2):215-9.

Induction of circulating soluble tumour necrosis factor receptor and interleukin 1 receptor antagonist following interleukin 1 alpha infusion in humans.

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1
Department of Medicine, New England Medical Center, Boston, MA 02111.

Abstract

The aim of this study was to investigate circulating levels of tumour necrosis factor soluble receptor p55 (TNFsrp55) and interleukin 1 receptor antagonist (IL-1ra) in cancer patients undergoing treatment with IL-1 alpha. Patients were treated with 0.03 micrograms/kg IL-1 alpha administered intravenously over a 30 min interval daily for five consecutive days. Plasma TNFsrp55 levels rose dramatically and peaked (24.5 +/- 3.6 ng/ml) within 1 h after the first IL-1 alpha infusion. Thereafter, the levels rapidly declined and reached baseline levels within 24 h. The increases observed on days 3 and 5 of treatment were less pronounced but the reductions in peak levels were not statistically significant. IL-1ra levels increased less abruptly after an IL-1 alpha infusion than did TNFsrp55 levels and peaked (25.3 +/- 5.1 ng/ml) within 2 h of the start of the IL-1 alpha infusion. Levels then rapidly declined reaching baseline values within 24 h. As with TNFsrp55 levels, peak IL-1ra levels observed on days 3 and 5 of treatment were less than those measured on day 1. IL-1 alpha and IL-1 beta levels were consistently below the threshold of detection of the RIAs employed in these studies. Likewise, with the exception of a single time point in one of the four patients studied, TNF-alpha was undetectable in all plasma samples assayed.(ABSTRACT TRUNCATED AT 250 WORDS).

PMID:
8032003
[Indexed for MEDLINE]
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