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Showa Ueki

Kyushu University

4 papers in the library · 19 citations · publishing 1983-1992

Papers

Effect of zotepine on head-twitch induced by L-5-Hydroxytryptophan,mescaline and 2,5-Dimethoxy-4-methylamphetamine in mice and rats.

The Japanese Journal of Pharmacology January 1, 1983 Tsuneyuki Yamamoto, Naoe Tazoe, Showa Ueki et al. 9 citations

Zotepine, a new neuroleptic, potently inhibits head-twitch induced by L-5-hydroxytryptophan, mescaline, and 2,5-dimethoxy-4-methylamphetamine in mice and rats, similar to haloperidol and the serotonin receptor blocker cyproheptadine. The results indicate zotepine has a potent anti-hallucinogenic effect.

Nootropic Candidates Inhibit Head-Twitches Induced by Mescaline in Mice.

The Japanese Journal of Pharmacology January 1, 1992 Tsuneyuki Yamamoto, Masuo Ohno, Shin‐ichi Yatsugi et al. 7 citations

In mice, several drugs being tested as potential nootropics reduced the number of head-twitches caused by mescaline (100 mg/kg). Idebenone (32 and 100 mg/kg), minaprine (0.32–10 mg/kg), and nebracetam (100 mg/kg) significantly suppressed this response. Cholinesterase inhibitors—tetrahydroaminoacridine (1 and 10 mg/kg), NIK-247 (10 and 18 mg/kg), and physostigmine (0.32 mg/kg)—also reduced the head-twitches. The findings suggest that activating cholinergic pathways, either directly or indirectly, may help inhibit mescaline-induced head-twitches in this animal model.

EFFECT OF ZOTEPINE ON HEAD-TWITCH INDUCED BY L-5-HYDROXYTRYPTOPHAN, MESCALINE AND 2,5-DIMETHOXY-4-METHYLAMPHETAMINE IN MICE AND RATS

The Japanese Journal of Pharmacology January 1, 1983 Tsuneyuki Yamamoto, Naoe Tazoe, Showa Ueki et al. 2 citations

Zotepine, a new neuroleptic, potently inhibits head-twitch induced by L-5-hydroxytryptophan, mescaline, and 2,5-dimethoxy-4-methylamphetamine in mice and rats, similar to haloperidol and the serotonin receptor blocker cyproheptadine. The results indicate that zotepine has a potent anti-hallucinogenic effect.

Nootropic Candidates Inhibit Head-Twitches Induced by Mescaline in Mice

The Japanese Journal of Pharmacology January 1, 1992 Tsuneyuki Yamamoto, Masuo Ohno, Shin‐ichi Yatsugi et al. 1 citation

In mice, several nootropic candidates reduced head-twitches caused by mescaline. Idebenone, minaprine, and nebracetam significantly lowered the number of mescaline-induced head-twitches. Cholinesterase inhibitors, including tetrahydroaminoacridine, NIK-247, and physostigmine, also suppressed this response. These findings suggest that direct or indirect activation of the cholinergic system may play a role in inhibiting mescaline-induced head-twitches.