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脊椎动物中枢神经系统中是否存在内源性类银环蛇毒素分子?

Is there an endogenous bungarotoxin-like molecule in the vertebrate central nervous system?

作者信息

Connolly J A

出版信息

Brain Res. 1984 Dec 10;323(2):307-10. doi: 10.1016/0006-8993(84)90303-2.

DOI:10.1016/0006-8993(84)90303-2
PMID:6525517
Abstract

It has been postulated that there is an endogenous bungarotoxin-like ligand in rat brain which can inhibit the binding of alpha-bungarotoxin (alpha-BGT) to its target nicotinic acetylcholine (ACh) receptor. We have examined this further by testing the ability of rat and chick brain and spinal cord extracts to inhibit the binding of alpha-BGT to ACh receptors in cultured chick and rat myotubes. We find no evidence for inhibition by any of these extracts, and thus cannot support the hypothesis of an endogenous alpha-BGT-like ligand.

摘要

据推测,大鼠脑中存在一种内源性的类银环蛇毒素配体,它能够抑制α-银环蛇毒素(α-BGT)与其靶标烟碱型乙酰胆碱(ACh)受体的结合。我们通过检测大鼠和鸡的脑及脊髓提取物抑制α-BGT与培养的鸡和大鼠肌管中ACh受体结合的能力,对此进行了进一步研究。我们未发现这些提取物具有抑制作用的证据,因此无法支持内源性类α-BGT配体这一假说。

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