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花生四烯酸代谢调节剂对过敏反应慢反应物质合成与释放的影响。

Effects of modulators of arachidonic acid metabolism on the synthesis and release of slow-reacting substance of anaphylaxis.

作者信息

Burka J F, Flower R J

出版信息

Br J Pharmacol. 1979 Jan;65(1):35-41. doi: 10.1111/j.1476-5381.1979.tb17331.x.

Abstract

1 Slow-reacting substance of anaphylaxis (SRS-A) was released in the peritoneum of passively sensitized rats challenged with ovalbumin and from rat isolated peritoneal cells stimulated with calcium ionophore A23187. 2 Both monocytes (macrophages) and mast cells appear to be involved in the synthesis and release of SRS-A. 3 The immunological release of SRS-A in vivo is enhanced by indomethacin and inhibited by dexamethasone, mepacrine, 1-phenyl-3-pyrazolidone (1-P-3-P), and methylimidazole. 4 SRS-A release induced by A23187 in vitro is inhibited by dexamethasone, indomethacin 1-P-3-P, eicosatetraynoic acid (ETA) and 15-hydroperoxy arachidonic acid. The inhibition induced by dexamethasone, indomethacin and 1-P-3-P is reduced by an increase in the calcium concentration from 1 mM to 5 mM, whereas the inhibition induced by ETA is increased. 5 The results suggest that a lipoxygenase is important in the synthesis and release by SRS-A.

摘要
  1. 用卵清蛋白攻击被动致敏大鼠的腹膜以及用钙离子载体A23187刺激大鼠分离的腹膜细胞时,会释放过敏反应慢反应物质(SRS-A)。2. 单核细胞(巨噬细胞)和肥大细胞似乎都参与了SRS-A的合成与释放。3. 吲哚美辛可增强体内SRS-A的免疫释放,而地塞米松、米帕林、1-苯基-3-吡唑啉酮(1-P-3-P)和甲基咪唑则可抑制该释放。4. 地塞米松、吲哚美辛、1-P-3-P、二十碳四烯酸(ETA)和15-氢过氧花生四烯酸可抑制A23187在体外诱导的SRS-A释放。当钙浓度从1 mM增加到5 mM时,地塞米松、吲哚美辛和1-P-3-P所诱导的抑制作用会减弱,而ETA所诱导的抑制作用则会增强。5. 结果表明,脂氧合酶在SRS-A的合成与释放过程中起重要作用。

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