Suppr超能文献

伴刀豆球蛋白A在体外诱导人嗜碱性粒细胞释放组胺。

Concanavalin A induced histamine release from human basophils in vitro.

作者信息

Magro A M, Bennich H

出版信息

Immunology. 1977 Jul;33(1):51-8.

Abstract

The site of interaction for concanavalin A (Con-A)-induced histamine release from human basophils was studied in vitro. Blocking the epsilon one determinant (D leads to 1) of IgE with high concentrations of monomer (Fab) anti-Depsilon1 does not significantly inhibit the quantity of histamine released by suboptimum concentrations of Fc specific anti-IgE. This indicates that the monomer anti-Depsilon1 does not have the capacity to sterically hinder the bridging of all of the determinants in the Cepsilon3 and Cepsilon4 domains (Fc'-epsilon-region) of IgE. The monomer anti-Depsilon1 does effectively inhibit release induced by suboptimum concentrations of Con-A. The data indicate that for suboptimum concentrations, Con-A activation is IgE mediated and takes place in the proximity of Depsilon1 and not at the membrane receptor for IgE.

摘要

在体外研究了伴刀豆球蛋白A(Con-A)诱导人嗜碱性粒细胞释放组胺的相互作用位点。用高浓度的单体(Fab)抗Dε1阻断IgE的ε1决定簇(D→1),并不能显著抑制次最佳浓度的Fc特异性抗IgE释放的组胺量。这表明单体抗Dε1没有空间阻碍IgE的Cε3和Cε4结构域(Fc'-ε区)中所有决定簇桥联的能力。单体抗Dε1确实有效地抑制了次最佳浓度的Con-A诱导的释放。数据表明,对于次最佳浓度,Con-A激活是由IgE介导的,发生在Dε1附近,而不是在IgE的膜受体处。

相似文献

引用本文的文献

本文引用的文献

6
Molecular weight studies on concanavalin A.伴刀豆球蛋白A的分子量研究
Biochem Biophys Res Commun. 1971 Jul 2;44(1):101-9. doi: 10.1016/s0006-291x(71)80164-x.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验