Journal article

EOSINOPHIL ACTIVATION BY COLONY-STIMULATING FACTOR IN MAN - METABOLIC EFFECTS AND ANALYSIS BY FLOW-CYTOMETRY

MA VADAS, G VARIGOS, N NICOLA, S PINCUS, A DESSEIN, D METCALF, FL BATTYE

BLOOD | AMER SOC HEMATOLOGY | Published : 1983

Abstract

Substantial increases in the killing capacity of human eosinophils after in vitro incubation with human placental conditioned medium (HPCM), a standard source of colony-stimulating factor (CSF), have recently been described. In this article, the interaction between HPCM and purified human eosinophils is analyzed by flow cytometry and by effects on iodination, superoxide production, and protein synthesis. HPCM increased the intensity of natural eosinophil autofluorescence (aFlu) (460 nm) after the absorption of ultraviolet light (360 nm) in a manner that was both time and dose dependent. Measured in arbitrary units, eosinophil aFlu was 72 +/- 7.3 (arithmetic mean +/- SEM) and 121 +/- 3.2 afte..

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