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慢反应物质A参与豚鼠小肠的舒尔茨-戴尔反应。

Involvement of SRS-A in the Schultz-Dale response of the guinea-pig small intestine.

作者信息

Herman A G, Laekeman G M, van Beek H A

出版信息

Br J Pharmacol. 1979 Jul;66(3):385-9. doi: 10.1111/j.1476-5381.1979.tb10842.x.

Abstract

1 The anaphylactic reaction of the guinea-pig ileum, the so called Schultz-Dale reaction, shows a biphasic response: a short rapid contraction followed by a partial relaxation and a slow contractile response. 2 Dose-response curves with ovalbumin as an antigen were obtained for the quick and slow contraction of this anaphylactic reaction. 3 Mepyramine (1 microgram/ml) blocked the rapid first contraction, but failed to abolish the slow one in about 50% of the animals studied. 4 The SRS-A antagonist, FPL 55712, significantly depressed the slow sustained contraction during the Schultz-Dale reaction. Disodiumcromoglycate was without effect on both phases when it was added 5 min before addition of the antigen. However, when added simultaneously with the antigen it produced a 30% suppression of the slow phase in the highest concentration used.

摘要
  1. 豚鼠回肠的过敏反应,即所谓的舒尔茨 - 戴尔反应,呈现双相反应:先是短暂快速收缩,随后部分松弛,接着是缓慢的收缩反应。2. 以卵清蛋白作为抗原,获得了该过敏反应快速和缓慢收缩的剂量 - 反应曲线。3. 美吡拉敏(1微克/毫升)阻断了快速的首次收缩,但在所研究的约50%的动物中未能消除缓慢收缩。4. SRS - A拮抗剂FPL 55712在舒尔茨 - 戴尔反应期间显著抑制了缓慢的持续收缩。色甘酸钠在添加抗原前5分钟加入时,对两个阶段均无作用。然而,当与抗原同时添加时,在所用最高浓度下它对缓慢阶段产生了30%的抑制作用。

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