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Effect of tetracosahexaenoic acid on the content and release of histamine, and eicosanoid production in MC/9 mouse mast cell
Author(s) -
Ishihara Kenji,
Murata Masakazu,
Kaneniwa Masaki,
Saito Hiroaki,
Shinohara Kazuki,
MaedaYamamoto Mari,
Kawasaki Kenichi,
Ooizumi Tooru
Publication year - 1998
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/s11745-998-0312-9
Subject(s) - histamine , arachidonic acid , polyunsaturated fatty acid , docosahexaenoic acid , eicosapentaenoic acid , mast cell , leukotriene , eicosanoid , chemistry , leukotriene c4 , biochemistry , fatty acid , endocrinology , medicine , biology , immunology , enzyme , asthma
6,9,12,15,18,21‐Tetracosahexaenoic acid (24∶6n−3) was isolated from a brittle star, Ophiura sarsi Lütken, at>95% purity to evaluate its physiological functions. The effects of 24∶6n−3 on the production of leukotriene (LT)‐related compounds such as LTB 4 , LTC 4 and 5‐hydroxyeicosatetraenoic acid, and the accumulation and release of histamine in an MC/9 mouse mast cell line were studied. We found that 24∶6n−3 could inhibit the antigen‐stimulated production of LT‐related compounds as well as other n−3 polyunsaturated fatty acids (PUFA) such as eicosapentaenoic acid (20∶5n−3) and docosahexaenoic acid (22∶6n−3), which are major n−3 PUFA in fish oils; 24∶6n−3 was also shown to reduce the histamine content in MC/9 cells at 25 μM (27% reduction from the control), and the effect was diminished with increase of the fatty acid concentration (up to 100 μM). These two n−3 PUFA, 20∶5n−3 and 22∶6n−3, also reduced the histamine content (16 and 20% reduction at 25 μM, respectively), whereas arachidonic acid (20∶4n−6) increased it (18% increase at 25 μM). Spontaneous‐ and antigen‐induced release of histamine was not influenced with these PUFA (at 25 μM). Ionophore‐stimulated release of histamine was suppressed by the PUFA (13,9,15, and 11% reduction with 20∶4n−6, 20∶5n−3, 22∶6n−3, and 24∶6n−3, respectively). The patterns of the effects of 24∶6n−3 on the synthesis of eicosanoids and histamine content were more similar to those of 22∶6n−3 than 20∶5n−3. From these results, 24∶6n−3 can be expected to have anti‐inflammatory activity and antiallergic activities similar to those of 22∶6n−3.