Effects of Footshock-, Psychological- and Forced Swimming-Stress on the Leaning and Memory Processes: Involvement of Opioidergic Pathways
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概要
- 論文の詳細を見る
Modulation of learning and memory acquisition, retention and retrieval in the one trial passive avoidance learning task in mice by three inescapable stresses, i.e., footshock (FS), psychological (PSY) and forced swimming (SW) were investigated. Pre-, post-training and pre-test FS-stress (2 mA, 0.2 Hz, 1 sec for 30 min) and pre-training PSY-stress (communication box, 5 min) resulted in enhanced test latencies. On the contrary, SW-stress (20°C, 5 min) immediately or 1 hr after training impaired retention latencies that tended to recover after 2 hr post-training SW-stress, suggesting that at least 2 hr are required to consolidate newly acquired information. In contrast, pre-stress naloxone (Nx), which did not affect FSand PSY-stress induced facilitatory effects, returned to control levels the impaired retention latencies induced by SW-stress. Taken collectively, these results imply the involvement of an opioid-dependent mechanism in the modulation of memory by SW-stress and non-opioid in the case of FS- and PSY-stress. Furthermore, they suggest that different mechanisms are involved in stress-induced memory modifications and the production of stress-induced analgesia (SIA) since in the latter, FS and PSY but not SW stress produce Nx-sensitive antinociception.
- 社団法人 日本薬理学会の論文
- 1995-02-01
著者
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Takahashi Masakatsu
Department Of Pharmacoinformatics School Of Pharmaceutical Sciences Nagasaki University
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Kaneto Hiroshi
Department Of Pharmacology Faculty Of Pharmaceutical Sciences Nagasaki University
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Kaneto Hiroshi
Department Of Pharmacology Faculty Of Pharmaceutical Science Nagasaki University
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Takahashi Masakatsu
Department Of Pharmacology Faculty Of Pharmaceutical Sciences Nagasaki University
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JODAR Luis
Department of Pharmacology, Faculty of Pharmaceutical Sciences, Nagasaki University
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Jodar Luis
Department Of Pharmacology Faculty Of Pharmaceutical Sciences Nagasaki University
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Takahashi Masakatsu
Department of Analytical Research for Pharmacoinformatics, Graduate School of Pharmaceutical Sciences, Nagasaki University
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