マウス行動分析によるL-オルニチン長期投与の効果について
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概要
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L-ornithine has recently received considerable attention as an anxiolytic-like or antifatigue agent inboth human and animal studies. However, most previous results were obtained from a singleadministration of L-ornithine. Accordingly, this study was designed to clarify the effects of long-termL-ornithine treatment on psychological stress and locomotor activity in mice using a variety of behavioralpharmacology methods. In a stress-induced hyperthermia test, 10 days of L-ornithine treatment inducedhyperthermia elevation. Pentobarbital-induced sleep time was shortened by the treatment. However, nosignificant effects were detected in the elevated plus-maze, running wheel, or forced swim tests. Theseresults suggest that long-term treatment with L-ornithine elevates stress sensitivity and arousal level inmice.
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