Journal of Pharmacological Sciences
June 1, 2026
Daiki Masukawa, Rei Tajika, Yoshimi Ichimaru et al.
Hallucinogens, such as lysergic acid diethylamide, act primarily through the 5-hydroxytryptamine 2A (5-HT2A) receptor, but their regulatory mechanisms remain unclear. G protein-coupled receptor 143 (GPR143), an L-3,4-dihydroxyphenylalanine (L-DOPA) receptor, modulates specific GPCRs. We examined the role of GPR143 in the action of 5-HT2A receptor agonist 2,5-dimethoxy-4-iodoamphetamine (DOI)....
Neuropsychopharmacology Reports
November 23, 2025
Hideaki Kato, Yoshimi Ichimaru, Masaaki Kurihara et al.
1 citation
AIM: The regulation of new psychoactive and dangerous abused substances is very important for the prevention of drug abuse. A simple and effective evaluation method using laboratory animals is needed to regulate designated drugs with high accuracy and speed. METHODS: receptor agonist 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane hydrochloride (DOI), which have a similar mechanism of action to...
Behavioural Brain Research
July 9, 2020
Tomohisa Mori, Naoki Uzawa, Daiki Masukawa et al.
Orexinergic neurons, which are closely associated with narcolepsy, regulate arousal and reward circuits through the activation of monoaminergic neurons. Psychostimulants as well as 5-HT-related compounds have potential in the treatment of human narcolepsy. Previous studies have demonstrated that orexin receptor antagonists as well as orexin deficiencies affect the pharmacological effects of...
Journal of Pharmacological Sciences
June 12, 2019
Tomohisa Mori, Kazumi Yoshizawa, Masahiro Shibasaki et al.
13 citations
The subjective effects of drugs are related to the kinds of feelings they produce, such as euphoria or dysphoria. One of the methods that can be used to study these effects is the drug discrimination procedure. Many researchers are trying to elucidate the mechanisms that underlie the discriminative stimulus effects of abused drugs (e.g., alcohol, psychostimulants, and opioids). Over the past...
Current Topics in Behavioral Neurosciences
2018
Tomohisa Mori, Tsutomu Suzuki
The subjective effects of drugs are related to the kinds of feelings they produce, such as euphoria or dysphoria. One of the methods that can be used to study these effects is the drug discrimination procedure. Many researchers have been trying to elucidate the mechanisms that underlie the discriminative stimulus properties of abused drugs (e.g., alcohol, psychostimulants, and opioids). Over...
Journal of Pharmacology and Experimental Therapeutics
August 2014
Tomohisa Mori, Naoki Uzawa, Haruyo Kazawa et al.
Previous studies have demonstrated that methylphenidate, MDMA (3,4-methylenedioxymethamphetamine), and other psychostimulants exert stimulant-like subjective effects in humans. Furthermore, MDMA and methylphenidate substitute for the discriminative stimulus effects of psychostimulants, such as amphetamine and cocaine, in animals, which suggests that MDMA and methylphenidate may produce similar...