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在离体大鼠脊髓中,肢端酸是比红藻氨酸或软骨藻酸更强效的刺激剂。

Acromelic acid is a much more potent excitant than kainic acid or domoic acid in the isolated rat spinal cord.

作者信息

Ishida M, Shinozaki H

机构信息

Tokyo Metropolitan Institute of Medical Science, Japan.

出版信息

Brain Res. 1988 Dec 6;474(2):386-9. doi: 10.1016/0006-8993(88)90456-8.

DOI:10.1016/0006-8993(88)90456-8
PMID:3208140
Abstract

Excitatory actions of acromelic acid were investigated in the isolated newborn rat spinal cord. Test compounds were added to the perfusing fluid and the responses were recorded from the ventral root extracellularly. Acromelic acid caused a depolarizing response in a dose-dependent manner and the depolarizing activity of acromelic acid was superior to that of other kainoids such as kainate and domoate. The depolarization induced by acromelate was not affected by NMDA antagonists at all. Acromelic acid was proved to be one of the most potent agonists of excitatory amino acids in both vertebrates and invertebrates.

摘要

在新生大鼠离体脊髓中研究了肢端酸的兴奋作用。将测试化合物添加到灌流液中,并从腹根细胞外记录反应。肢端酸以剂量依赖的方式引起去极化反应,且肢端酸的去极化活性优于其他红藻氨酸类物质,如红藻氨酸和软骨藻酸。由肢端酸盐诱导的去极化完全不受NMDA拮抗剂的影响。事实证明,肢端酸是脊椎动物和无脊椎动物中最有效的兴奋性氨基酸激动剂之一。

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1
Acromelic acid is a much more potent excitant than kainic acid or domoic acid in the isolated rat spinal cord.在离体大鼠脊髓中,肢端酸是比红藻氨酸或软骨藻酸更强效的刺激剂。
Brain Res. 1988 Dec 6;474(2):386-9. doi: 10.1016/0006-8993(88)90456-8.
2
Novel kainate derivatives: potent depolarizing actions on spinal motoneurones and dorsal root fibres in newborn rats.新型红藻氨酸衍生物:对新生大鼠脊髓运动神经元和背根纤维的强去极化作用。
Br J Pharmacol. 1991 Dec;104(4):873-8. doi: 10.1111/j.1476-5381.1991.tb12520.x.
3
Effects of acromelic acid A on the binding of [3H]glutamic acid and [3H]kainic acid to synaptic membranes and on the depolarization at the frog spinal cord.肢端酸A对[3H]谷氨酸和[3H] kainic酸与突触膜结合以及对青蛙脊髓去极化的影响。
Brain Res. 1989 Dec 18;504(2):328-31. doi: 10.1016/0006-8993(89)91379-6.
4
Acromelic acid, a novel excitatory amino acid from a poisonous mushroom: effects on the crayfish neuromuscular junction.肢端酸,一种来自毒蘑菇的新型兴奋性氨基酸:对小龙虾神经肌肉接头的影响。
Brain Res. 1986 Dec 10;399(2):395-8. doi: 10.1016/0006-8993(86)91535-0.
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A marked increase in intracellular Ca2+ concentration induced by acromelic acid in cultured rat spinal neurons.肢端酸诱导培养的大鼠脊髓神经元细胞内钙离子浓度显著升高。
Neuropharmacology. 1994 Sep;33(9):1079-85. doi: 10.1016/0028-3908(94)90146-5.
6
Neurotoxicity of acromelic acid in cultured neurons from rat spinal cord.
Neuroscience. 1995 Sep;68(2):585-91. doi: 10.1016/0306-4522(95)00149-d.
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Actions of acromelic acid on nervous system L-glutamate receptors.肢端酸对神经系统L-谷氨酸受体的作用。
Arch Insect Biochem Physiol. 1994;25(2):87-94. doi: 10.1002/arch.940250202.
8
Selective degeneration of inhibitory interneurons in the rat spinal cord induced by intrathecal infusion of acromelic acid.鞘内注射肢端酸诱导大鼠脊髓抑制性中间神经元的选择性变性。
Brain Res. 1995 Dec 8;702(1-2):61-71. doi: 10.1016/0006-8993(95)01000-6.
9
Effects of acromelic acid A on the binding of [3H]-kainic acid and [3H]-AMPA to rat brain synaptic plasma membranes.肢端酸A对[3H]- kainic酸和[3H]-AMPA与大鼠脑突触质膜结合的影响。
Br J Pharmacol. 1992 Jan;105(1):83-6. doi: 10.1111/j.1476-5381.1992.tb14214.x.
10
A comparison of the actions of agonists and antagonists at non-NMDA receptors of C fibres and motoneurones of the immature rat spinal cord in vitro.未成熟大鼠脊髓C纤维和运动神经元非NMDA受体上激动剂与拮抗剂作用的体外比较
Br J Pharmacol. 1993 Jan;108(1):179-84. doi: 10.1111/j.1476-5381.1993.tb13459.x.

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Potent NMDA-like actions and potentiation of glutamate responses by conformational variants of a glutamate analogue in the rat spinal cord.一种谷氨酸类似物的构象变体在大鼠脊髓中具有强大的类N-甲基-D-天冬氨酸(NMDA)样作用并增强谷氨酸反应。
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Novel kainate derivatives: potent depolarizing actions on spinal motoneurones and dorsal root fibres in newborn rats.
新型红藻氨酸衍生物:对新生大鼠脊髓运动神经元和背根纤维的强去极化作用。
Br J Pharmacol. 1991 Dec;104(4):873-8. doi: 10.1111/j.1476-5381.1991.tb12520.x.
4
Effects of acromelic acid A on the binding of [3H]-kainic acid and [3H]-AMPA to rat brain synaptic plasma membranes.肢端酸A对[3H]- kainic酸和[3H]-AMPA与大鼠脑突触质膜结合的影响。
Br J Pharmacol. 1992 Jan;105(1):83-6. doi: 10.1111/j.1476-5381.1992.tb14214.x.