Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats

Abstract.: Generalizations of NMDA-receptor antagonists to the discriminative stimulus effects of κ-opioid receptor agonists in rats were examined. Phencyclidine, MK-801, and ketamine, noncompetitive NMDA-receptor antagonists, generalized to the discriminative stimulus effects of U-50,488H, but not...

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Main Authors: Tomohisa Mori, Mutsuko Nomura, Kazumi Yoshizawa, Hiroshi Nagase, Toshiko Sawaguchi, Minoru Narita, Tsutomu Suzuki
Format: Article
Language:English
Published: Elsevier 2006-01-01
Series:Journal of Pharmacological Sciences
Online Access:http://www.sciencedirect.com/science/article/pii/S1347861319345281
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author Tomohisa Mori
Mutsuko Nomura
Kazumi Yoshizawa
Hiroshi Nagase
Toshiko Sawaguchi
Minoru Narita
Tsutomu Suzuki
author_facet Tomohisa Mori
Mutsuko Nomura
Kazumi Yoshizawa
Hiroshi Nagase
Toshiko Sawaguchi
Minoru Narita
Tsutomu Suzuki
author_sort Tomohisa Mori
collection DOAJ
description Abstract.: Generalizations of NMDA-receptor antagonists to the discriminative stimulus effects of κ-opioid receptor agonists in rats were examined. Phencyclidine, MK-801, and ketamine, noncompetitive NMDA-receptor antagonists, generalized to the discriminative stimulus effects of U-50,488H, but not those of TRK-820, whereas (±)-3-(2-carbaxypiperazine-4-yl) propyl-1-phosphonic acid (CPP), a competitive NMDA-receptor antagonist, and ifenprodil, an NR1/NR2B NMDA-receptor antagonist, did not, suggesting that non-competitive NMDA-receptor antagonists possess U-50,488H-like discriminative stimulus effects in rats. Since U-50,488H and phencyclidine both induce aversive effects, our findings indicate that the cue of the discriminative stimulus effects of U-50,488H and non-competitive NMDA-receptor antagonists may be associated with their aversive effects. Keywords:: drug discrimination, κ-opioid receptor agonist, NMDA-receptor antagonist
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spelling doaj.art-9917bcfb89a84449bbffb2fc0b2ac13c2022-12-21T18:39:38ZengElsevierJournal of Pharmacological Sciences1347-86132006-01-011002157161Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in RatsTomohisa Mori0Mutsuko Nomura1Kazumi Yoshizawa2Hiroshi Nagase3Toshiko Sawaguchi4Minoru Narita5Tsutomu Suzuki6Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Shinagawa-ku, Tokyo 142-8501, Japan; Department of Legal Medicine, Tokyo Women’s Medical University, Shinkuku-ku, Tokyo 162-8666, JapanDepartment of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Shinagawa-ku, Tokyo 142-8501, JapanDepartment of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Shinagawa-ku, Tokyo 142-8501, JapanBasic Research Laboratories, Toray Industries, Inc., Kamakura, Kanagawa 248-8555, JapanDepartment of Legal Medicine, Tokyo Women’s Medical University, Shinkuku-ku, Tokyo 162-8666, JapanDepartment of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Shinagawa-ku, Tokyo 142-8501, JapanDepartment of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Shinagawa-ku, Tokyo 142-8501, Japan; Corresponding author. suzuki@hoshi.ac.jpAbstract.: Generalizations of NMDA-receptor antagonists to the discriminative stimulus effects of κ-opioid receptor agonists in rats were examined. Phencyclidine, MK-801, and ketamine, noncompetitive NMDA-receptor antagonists, generalized to the discriminative stimulus effects of U-50,488H, but not those of TRK-820, whereas (±)-3-(2-carbaxypiperazine-4-yl) propyl-1-phosphonic acid (CPP), a competitive NMDA-receptor antagonist, and ifenprodil, an NR1/NR2B NMDA-receptor antagonist, did not, suggesting that non-competitive NMDA-receptor antagonists possess U-50,488H-like discriminative stimulus effects in rats. Since U-50,488H and phencyclidine both induce aversive effects, our findings indicate that the cue of the discriminative stimulus effects of U-50,488H and non-competitive NMDA-receptor antagonists may be associated with their aversive effects. Keywords:: drug discrimination, κ-opioid receptor agonist, NMDA-receptor antagonisthttp://www.sciencedirect.com/science/article/pii/S1347861319345281
spellingShingle Tomohisa Mori
Mutsuko Nomura
Kazumi Yoshizawa
Hiroshi Nagase
Toshiko Sawaguchi
Minoru Narita
Tsutomu Suzuki
Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats
Journal of Pharmacological Sciences
title Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats
title_full Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats
title_fullStr Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats
title_full_unstemmed Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats
title_short Generalization of NMDA-Receptor Antagonists to the Discriminative Stimulus Effects of κ-Opioid Receptor Agonists U-50,488H, but Not TRK-820 in Rats
title_sort generalization of nmda receptor antagonists to the discriminative stimulus effects of κ opioid receptor agonists u 50 488h but not trk 820 in rats
url http://www.sciencedirect.com/science/article/pii/S1347861319345281
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