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Ryouichi Nonaka

3 papers in the library · 312 citations · publishing 2007-2008

Papers

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In Vitro Screening of Psychoactive Drugs to Prevent the Abuses

YAKUGAKU ZASSHI December 1, 2008 Kanako Satoh, Ryouichi Nonaka 4 citations

The Tokyo Metropolitan Government in Japan enacted an "Ordinance concerning the abuse prevention of the psychoactive drugs" in April 2006 that prohibited the manufacture, cultivation, sales, possession, use, etc., of these drugs. Therefore, we constructed a reproducible, simple, and small-scale determination method of the psychoactive drugs for the re-uptake and the release of monoamines...

The effects of non-medically used psychoactive drugs on monoamine neurotransmission in rat brain.

European Journal of Pharmacology March 22, 2007 Fumiko Nagai, Ryouichi Nonaka, Kanako Satoh Hisashi Kamimura 277 citations

We developed a reproducible, simple, and small-scale method for determining the re-uptake and release of monoamines (dopamine, serotonin (5-HT) and norepinephrine) using rat brain synaptosomes. These assays were then applied to study the effects of different kinds of non-medically used psychoactive drugs on monoamine re-uptake and release. The phenethylamine derivatives, 4-fluoroamphetamine,...

In Vitro Screening of Psychoactive Drugs by [35S]GTP.GAMMA.S Binding in Rat Brain Membranes

Biological and Pharmaceutical Bulletin 2007 Ryouichi Nonaka, Fumiko Nagai, Akio Ogata et al. 31 citations

We constructed a reproducible, simple, and small-scale determination method of the psychoactive drugs that acted directly on the monoamine receptor by measuring the activation of [(35)S]guanosine-5'-O-(3-thio)-triphosphate binding to guanine nucleotide-binding proteins (G proteins). This method can simultaneously measure the effects of three monoamines, namely dopamine (DA), serotonin (5-HT),...