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水蛭Retzius神经元上谷氨酸兴奋性受体的构效关系研究。

Structure-activity studies on an excitatory receptor for glutamate on leech Retzius neurones.

作者信息

James V A, Walker R J, Wheal H V

出版信息

Br J Pharmacol. 1980 Apr;68(4):711-7. doi: 10.1111/j.1476-5381.1980.tb10864.x.

Abstract

1 Intracellular recordings were made from Retzius cells from the segmental ganglia of Hirudo medicinalis and Haemopis sanguisuga. Glutamate had a direct excitatory effect on the leech Retzius cells. 2 L-Glutamate was 25 times more potent than D-glutamate. 3 L-Glutamate was approximately equipotent with ibotenic acid and 11.2 times more potent than L-aspartic acid. 4 Quisqualic acid and kainic acid were both approximately 100 times more potent than L-glutamate. DL-1-Amino-cis-1-3-dicarboxyclyclopentane was approximately 5 times more potent than L-glutamate, while the trans isomer was 105 times less potent. 5 alpha-NH2-pimelic acid and beta-CH3-glutamic acid reduced the response to L-glutamate. 6 It is suggested that glutamic acid may interact with the Retzius cell glutamate receptor in an extended conformation.

摘要
  1. 从医用水蛭和红蛭的节段神经节中的雷丘斯细胞进行细胞内记录。谷氨酸对水蛭雷丘斯细胞有直接兴奋作用。2. L-谷氨酸的效力比D-谷氨酸强25倍。3. L-谷氨酸与鹅膏蕈氨酸效力大致相当,比L-天冬氨酸强11.2倍。4. quisqualic酸和海人藻酸的效力均比L-谷氨酸强约100倍。DL-1-氨基-顺-1,3-二羧基环戊烷的效力比L-谷氨酸强约5倍,而反式异构体的效力则弱105倍。5. α-氨基庚二酸和β-甲基谷氨酸降低了对L-谷氨酸的反应。6. 提示谷氨酸可能以伸展构象与雷丘斯细胞谷氨酸受体相互作用。

相似文献

4
Actions of glutamate, kainate, dihydrokainate and analogues on leech neurone acidic amino acid receptors.
Eur J Pharmacol. 1980 Mar 7;62(1):35-9. doi: 10.1016/0014-2999(80)90478-1.

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