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Kenji Tsujikawa

8 papers in the library · 241 citations · publishing 2003-2025

Papers

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Synthesis and analytical characterization of 1-(2-thienoyl)-6-allyl-nor-d-lysergic acid diethylamide (1T-AL-LAD).

Drug Testing and Analysis April 1, 2025 Yuki Okada, Hiroki Segawa, Tadashi Yamamuro et al. 6 citations

Lysergic acid diethylamide (LSD) analogs have emerged as new psychoactive substances (NPS) since the mid-2010s, and new compounds continue to emerge for recreational use. Since the end of 2023, "1D-AL-LAD" appeared on X (formerly Twitter) and other websites. As for the compound "1D-LSD" (which also has "1D" in the name), several studies show that the ingredient of seized blotter paper printed...

DOI: 10.1002/dta.3747 (opens in new tab) Full text (opens in new tab) 1d‐al‐lad Chemical synthesis New psychoactive substances Chemical analysis +3

Recreational drugs, 3,4-Methylenedioxymethamphetamine(MDMA), 3,4-methylenedioxyamphetamine (MDA) and diphenylprolinol, inhibit neurite outgrowth in PC12 cells

The Journal of Toxicological Sciences 2010 Asuka Kaizaki, Sachiko Tanaka, Kenji Tsujikawa et al. 14 citations

3,4-Methylenedioxymethamphetamine (MDMA) is widely abused as a psychoactive recreational drug. It is well known that MDMA induces neurotoxic damage of serotonergic nerve endings. Although drug abuse is increasing among youths, it is unclear whether recreational drugs affect the development of nerve growth. Thus, the present study examined the effect of recreational drugs, such as MDMA,...

DOI: 10.2131/jts.35.375 (opens in new tab) MDMA Neurite Pharmacology Recreation

In vitro stability and metabolism of salvinorin A in rat plasma.

Xenobiotica May 1, 2009 Kenji Tsujikawa, Kenji Kuwayama, Hajime Miyaguchi et al. 64 citations

Salvinorin A is the main active psychoactive ingredient in Salvia divinorum, a Mexican plant that has been widely available as a hallucinogen in recent years. The aims of this study were to investigate the stability of salvinorin A in rat plasma, esterases responsible for its degradation, and estimation of the degradation products. The apparent first-order rate constants of salvinorin A at 37...

DOI: 10.1080/00498250902769967 (opens in new tab) Full text (opens in new tab) Salvinorin a Potent natural compound This compound Drug metabolism +12

Determination of muscimol and ibotenic acid in Amanita mushrooms by high-performance liquid chromatography and liquid chromatography-tandem mass spectrometry.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences June 1, 2007 Kenji Tsujikawa, Kenji Kuwayama, Hajime Miyaguchi et al.

A reliable analytical method was developed for the quantification and identification of muscimol (MUS) and ibotenic acid (IBO), the toxic constituents of Amanita muscaria and Amanita pantherina. MUS and IBO were extracted from mushrooms by aqueous methanol and derivatized with dansyl chloride (DNS-Cl). After extraction with ethyl acetate and evaporation of the solvent, the residue was ethylated...

Analysis of hallucinogenic constituents in Amanita mushrooms circulated in Japan.

Forensic Science International December 20, 2006 Kenji Tsujikawa, Hiroyuki Mohri, Kenji Kuwayama et al. 51 citations

The constituents of seven mushrooms sold as Amanita muscaria or Amanita pantherina (five A. muscaria and two A. pantherina) and four "extracts purported to contain A. muscaria" products that are currently circulated in Japan were determined. All mushroom samples were identified as A. muscaria or A. pantherina by macroscopic and microscopic observation. The dissociative constituents, ibotenic...

DOI: 10.1016/j.forsciint.2006.01.004 (opens in new tab) Full text (opens in new tab) Mushroom chemistry Psychoactive substances Product adulteration Amanita mushrooms

A study of the metabolism of methamphetamine and 4-bromo-2,5-dimethoxyphenethylamine (2C-B) in isolated rat hepatocytes.

Forensic Science International March 10, 2005 Tatsuyuki Kanamori, Kenji Tsujikawa, Y Ohmae et al.

The metabolism of methamphetamine (MA) and 4-bromo-2,5-dimethoxyphenethylamine (2C-B) in freshly isolated rat hepatocytes was investigated, and compared with in vivo results. A suspended hepatocyte culture, established from male Wistar rats using a collagenase perfusion technique, was incubated in the presence of MA or 2C-B. After enzymatic hydrolysis of the conjugated forms, the metabolites...

Morphological and chemical analysis of magic mushrooms in Japan.

Forensic Science International December 17, 2003 Kenji Tsujikawa, Tatsuyuki Kanamori, Yuko T Iwata et al. 79 citations

Morphological and toxicological analyses were performed on hallucinogenic mushrooms that are currently circulated in Japan. Scanning electron microscope (SEM) indicated a three-dimensional microstructures in the mushrooms. The complementary use of SEM with an optical microscope was effective for observing characteristic tissues, such as basidiomycetes, spores, cystidia and basidia....

Excretory Profile of 4-Bromo-2,5-dimethoxy-phenethylamine (2C-B) in Rat

JOURNAL OF HEALTH SCIENCE April 1, 2003 Tatsuyuki Kanamori, Kenji Tsujikawa, Yoshihito Ohmae et al. 27 citations

The urinary and faecal metabolic profiles of 4bromo-2,5-dimethoxyphenethylamine (2C-B) in rat were investigated. Male Wistar rats were administrated 10 mg/kg of 2C-B hydrochloride orally, and the urine and faeces were collected 0‐24 and 24‐48 hr after administration. The samples were processed by liquidliquid extraction, and the extracts analyzed by GC/ MS, after derivatization. The major...