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Production of platelet‐activating factor by human normodense and hypodense eosinophils
Author(s) -
OjimaUchiyama Ayako,
Masuzawa Yasuo,
Sugiura Takayuki,
Waku Keizo,
Fukuda Takeshi,
Makino Sohei
Publication year - 1991
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02536531
Subject(s) - platelet activating factor , incubation , hypereosinophilic syndrome , clinical chemistry , immunology , chemistry , platelet , neutrophile , medicine , endocrinology , eosinophilia , biochemistry , inflammation
Normodense eosinophils and neutrophils from normal donors produced considerable amounts of plateletactivating factor (PAF) when stimulated with ionophore A23187. PAF produced by eosinophils appeared to be degraded more rapidly than PAF formed by neutrophils, suggesting a higher activity of PAF‐degrading enzyme in eosinophils. Substantial proportions of PAF newly formed by both eosinophils and neutrophils were shown to be cell‐associated. By comparison, hypodense eosinophils obtained from a patient with idiopathic hypereosinophilic syndrome produced an extremely large amount of PAF and released much of it into the incubation medium. The accelerated formation of PAF in hypodense eosinophils may be related to various cardiovascular complications associated with hypereosinophilic syndrome.