کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4180106 1276587 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cellular Mechanisms Underlying the Antidepressant Effects of Ketamine: Role of α-Amino-3-Hydroxy-5-Methylisoxazole-4-Propionic Acid Receptors
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی روانپزشکی بیولوژیکی
پیش نمایش صفحه اول مقاله
Cellular Mechanisms Underlying the Antidepressant Effects of Ketamine: Role of α-Amino-3-Hydroxy-5-Methylisoxazole-4-Propionic Acid Receptors
چکیده انگلیسی

BackgroundKetamine exerts a robust, rapid, and relatively sustained antidepressant effect in patients with major depression. Understanding the mechanisms underlying the intriguing effects of N-methyl d-aspartate (NMDA) antagonists could lead to novel treatments with a rapid onset of action.MethodsThe learned helplessness, forced swim, and passive avoidance tests were used to investigate ketamine’s behavioral effects in mice. Additional biochemical and behavioral experiments were undertaken to determine whether the antidepressant-like properties of ketamine and other NMDA antagonists involve α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptor throughput.ResultsSubanesthetic doses of ketamine treatment caused acute and sustained antidepressant-like effects. At these doses, ketamine did not impair fear memory retention. MK-801 (dizocilpine) and Ro25-6981, an NR2B selective antagonist, also exerted antidepressant-like effects; these effects, however, were not sustained as long as those of ketamine. Pre-treatment with NBQX, an AMPA receptor antagonist, attenuated both ketamine-induced antidepressant-like behavior and regulation of hippocampal phosphorylated GluR1 AMPA receptors.ConclusionsNMDA antagonists might exert rapid antidepressant-like effects by enhancing AMPA relative to NMDA throughput in critical neuronal circuits.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Psychiatry - Volume 63, Issue 4, 15 February 2008, Pages 349–352
نویسندگان
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