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Toma Shibuya, Shoichi Nishimoto-Kusunose, Ayaka Hirakawa, Kazumi Yoshizawa, Tatsuya Higashi. LC/ESI-MS/MS analysis of progesterone-derived steroids produced in SH-SY5Y cells. Medical Mass Spectrometry. 2023. 7. 1. 60-70
Tatsuya Higashi, Saki Aso, Hiroaki Horisaki, Takenori Ito, Sakurako Tanaka, Shoichi Nishimoto-Kusunose, Shoujiro Ogawa, Kazuhiko Kato, Hisamitsu Ide. Evaluation of thumbnail clipping as a specimen for retrospectively assessing average production of testosterone. Clinica chimica acta; international journal of clinical chemistry. 2023. 538. 157-163
Kazunari Takada, Yukino Hagiwara, Moeka Togashi, Atsushi Kittaka, Fumihiro Kawagoe, Motonari Uesugi, Shoichi Nishimoto-Kusunose, Tatsuya Higashi. 23,25-Dihydroxyvitamin D3 is liberated as a major vitamin D3 metabolite in human urine after treatment with β-glucuronidase: Quantitative comparison with 24,25-dihydroxyvitamin D3 by LC/MS/MS. The Journal of steroid biochemistry and molecular biology. 2022. 223. 106133-106133
Yohei MIKAMI, Mizuo AIZAWA, Ryoko TODA, Shoujiro OGAWA, Shoichi NISHIMOTO-KUSUNOSE, Takayuki ISHIGE, Tatsuya HIGASHI. Application of 4-Diethylaminobenzoic Acid <i>N</i>-Succinimidyl Ester and Its Deuterated Isotopologue as Derivatization Reagents to Quantitative Analysis of γ-Aminobutyric Acid in Serum by LC/ESI-MS/MS. CHROMATOGRAPHY. 2022. 43. 2. 53-58