Journal ArticleDOI
2-Amino-4-phosphonobutyric acid as a glutamate antagonist on locust muscle
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TLDR
The glutamate analogue, DL-2-ammo-4-phosphonobuytyric acid (DL-APB), inhibits the binding of glutamate to ‘receptor-like’ hydrophobic proteolipids isolated from locust muscle and antagonises the excitatory action of glutamate applied iontophoretically to receptors present in the locust Muscle membrane.Abstract:
THE characterisation of glutamate receptors in nerve and muscle membranes requires compounds which interact specifically with these receptors. In the vertebrate central nervous system various substances are reported to act as agonists or antagonists of glutamate (reviewed in refs 1 and 2). At the locust and crustacean nerve-muscle junctions, where the receptors are readily accessible for biochemical and pharmacological characterisation, comparatively few compounds activate the glutamate-sensitive receptors or antagonise the excitatory action of glutamate3–9 and so such substances are needed. We report here that the glutamate analogue, DL-2-ammo-4-phosphonobuytyric acid (DL-APB) (Fig. 1), inhibits the binding of glutamate to ‘receptor-like’ hydrophobic proteolipids isolated from locust muscle10,11 and antagonises the excitatory action of glutamate applied iontophoretically to receptors present in the locust muscle membrane. The shape and charge distribution of DL-APB are appropriate for interaction with glutamate receptors2,7,12.read more
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Excitatory amino acids in synaptic transmission in the Schaffer collateral-commissural pathway of the rat hippocampus.
TL;DR: Results indicate that the synaptic receptor in the Schaffer collateral‐commissural pathway may be of the kainate or quisqualate type and although NMA receptors do not appear to be involved in normal synaptic transmission in this pathway they may play a role in synaptic plasticity.
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The physiology of excitatory amino acids in the vertebrate central nervous system.
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2-Amino-4-phosphonobutyric acid: A new pharmacological tool for retina research
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THE EFFECTS OF A SERIES OF ω‐PHOSPHONIC α‐CARBOXYLIC AMINO ACIDS ON ELECTRICALLY EVOKED AND EXCITANT AMINO ACID‐INDUCED RESPONSES IN ISOLATED SPINAL CORD PREPARATIONS
TL;DR: A comparison of the (+)‐ and (—)‐forms of 2‐amino‐5‐phosphonovalerate indicated that the N‐methyl‐d‐aspartate antagonist activity and the neuronal depressant action of this substance were both due mainly to the ()—)‐isomer.
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Pharmacological characterization of different types of GABA and glutamate receptors in vertebrates and invertebrates.
A Nistri,A Constanti +1 more
TL;DR: In this article, the authors present a list of abbreviations for nouns and adjectives: list of abbreviations 118.1.2.3.3].
References
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The excitation and depression of spinal neurones by structurally related amino acids.
David R. Curtis,J. C. Watkins +1 more
TL;DR: A survey of the activity of compounds structurally related to both series of amino acids finds that one of them or a related substance may have excitatory transmitter function within the nervous system.
Journal ArticleDOI
Two types of extrajunctional L-glutamate receptors in locust muscle fibres.
TL;DR: While the extrajunctional D‐receptors show analogies to the extraJunctional ACh receptors in vertebrate muscle, the significance of the extra junctional H‐receptor remains speculative.
Journal ArticleDOI
A study of curare action with an electrical micro-method
J. Del Castillo,Bernard Katz +1 more
TL;DR: A micromethod is described by which depolarizing and inhibiting drugs can be applied, ionophoretically, from a common ‘point source’ to sensitive regions of a motor end-plate.
Journal ArticleDOI
A new potent excitant, quisqualic acid: effects on crayfish neuromuscular junction.
H Shinozaki,I Shibuya +1 more
TL;DR: The effect of quisqualic acid, an amino acid obtained from the seed of Quisqualis indica L., on the neuromuscular junction of the crayfish was investigated and induced desensitization of the receptor to l -glutamic acid.