Amphetamine inhibits the N-methyl-D-aspartate receptor-mediated responses by directly interacting with the receptor/channel complex

Y. E H Geng-Chang, Jin Chung Chen, Hsiu Chuan Tsai, W. U. Hsueh-Hsia, L. I N Chao-Yu, H. S U Ping-Ching, Yu Chen Peng

Research output: Contribution to journalArticle

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Abstract

Amphetamine (AMPH) induces behavioral sensitization and neurotoxicity primarily by enhancing the dopamine-mediated neurotransmission. However, the involvement of the N-methyl-D-aspartate (NMDA) receptor in AMPH-induced neuropathology is also known. Recent investigation has found that high concentration of dopamine could inhibit NMDA receptor-mediated responses by blocking the NMDA receptor channel. By virtue of the structure similarity between dopamine and AMPH, we determined whether d-AMPH and its analogs, ??-AMPH and methamphetamine (MAMH), could affect the NMDA receptor-mediated [3H]N-[1-(2-thienyl)cyclohexyl] piperidine ([3H]TCP) binding in rat cortical membrane preparations and intracellular 45Ca2+ accumulation and cell death in the rat primary cortical cell cultures. AMPH concentration-dependently inhibited NMDA- and glycine-stimulated [3H]TCP binding and intracellular 45Ca2+ accumulation with two distinct potencies; a minor inhibition with high potency and a major inhibition with low potency. [3H]TCP binding suggested that the high-potency inhibition was produced by decreasing agonist-induced activation of the NMDA receptor channel. On the other hand, the low-potency inhibition was produced by competing with [3H]TCP binding in the NMDA receptor channel, like the action of noncompetitive antagonist of the NMDA receptor. However, AMPH analogs were less potent in inhibiting NMDA- and glycine-induced cultured cell death. Thus, this result indicates that AMPH could antagonize the NMDA receptor-mediated responses in vitro by two different mechanisms, probably, through directly interacting with two distinct sites on this receptor/channel complex.

Original languageEnglish
Pages (from-to)1008-1016
Number of pages9
JournalJournal of Pharmacology and Experimental Therapeutics
Volume300
Issue number3
DOIs
Publication statusPublished - 2002

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Amphetamine
N-Methyl-D-Aspartate Receptors
Sarcosine
Dopamine
N-Methylaspartate
Cell Death
Intracellular Membranes
Dextroamphetamine
Primary Cell Culture
Methamphetamine
Synaptic Transmission
Cultured Cells

ASJC Scopus subject areas

  • Pharmacology

Cite this

Amphetamine inhibits the N-methyl-D-aspartate receptor-mediated responses by directly interacting with the receptor/channel complex. / Geng-Chang, Y. E H; Chen, Jin Chung; Tsai, Hsiu Chuan; Hsueh-Hsia, W. U.; Chao-Yu, L. I N; Ping-Ching, H. S U; Peng, Yu Chen.

In: Journal of Pharmacology and Experimental Therapeutics, Vol. 300, No. 3, 2002, p. 1008-1016.

Research output: Contribution to journalArticle

Geng-Chang, Y. E H ; Chen, Jin Chung ; Tsai, Hsiu Chuan ; Hsueh-Hsia, W. U. ; Chao-Yu, L. I N ; Ping-Ching, H. S U ; Peng, Yu Chen. / Amphetamine inhibits the N-methyl-D-aspartate receptor-mediated responses by directly interacting with the receptor/channel complex. In: Journal of Pharmacology and Experimental Therapeutics. 2002 ; Vol. 300, No. 3. pp. 1008-1016.
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