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Determination of Abiraterone and Its Metabolites in Human Serum by LC-ESI-TOF/MS Using Solid-phase Extraction.
Kanji H, Horiyama S, Kimachi T, Haginaka J. Kanji H, et al. Anal Sci. 2021 Sep 10;37(9):1281-1287. doi: 10.2116/analsci.21P035. Epub 2021 Mar 5. Anal Sci. 2021. PMID: 33678729 Free article.
We developed and validated a liquid chromatography-electrospray ionization-time of flight/mass spectrometry method for the determination of abiraterone (Abi) and its metabolites (delta(4)-Abi, 3-keto-5alpha-Abi, 3alpha-OH-5alpha-Abi and 3beta-OH-5alpha-Abi) in human …
We developed and validated a liquid chromatography-electrospray ionization-time of flight/mass spectrometry method for the determination of …
Identification of novel metabolites of abiraterone in human serum and their metabolic pathways.
Horiyama S, Hayama N, Yoneyama H, Usami Y, Haginaka J. Horiyama S, et al. Anal Sci. 2024 Jan;40(1):67-74. doi: 10.1007/s44211-023-00431-4. Epub 2023 Oct 13. Anal Sci. 2024. PMID: 37831314
Two novel abiraterone (Abi, 3beta-OH-Abi) metabolites in human serum were identified as 3alpha-OH-Abi and delta(5)-Abi (D5A). ...Presumably, D5A detection is difficult because of its rapid conversion to D4A and its low concentration in serum samples. In contrast, th …
Two novel abiraterone (Abi, 3beta-OH-Abi) metabolites in human serum were identified as 3alpha-OH-Abi and delta(5)-Abi (D5A). …
Molecularly imprinted polymers for arbutin and rutin by modified precipitation polymerization and their application for selective extraction of rutin in nutritional supplements.
Masumoto S, Nakamura Y, Haginaka J. Masumoto S, et al. J Pharm Biomed Anal. 2021 Oct 25;205:114294. doi: 10.1016/j.jpba.2021.114294. Epub 2021 Jul 31. J Pharm Biomed Anal. 2021. PMID: 34375783
Furthermore, the MIPs for ARB and RUT showed the highest imprinting factors of 3.65 and 66.5 for the template molecules, respectively. Hydrogen bonding interactions such as NH-O, C=OH-O and NHO-H between 4-VPY or MAM and hydroxy groups of d-glucose or d-rutinose could func …
Furthermore, the MIPs for ARB and RUT showed the highest imprinting factors of 3.65 and 66.5 for the template molecules, respectively. Hydro …
Evaluation of molecularly imprinted polymers for chlorpromazine and bromopromazine prepared by multi-step swelling and polymerization method-The application for the determination of chlorpromazine and its metabolites in rat plasma by column-switching LC.
Nishimura K, Okamura N, Kimachi T, Haginaka J. Nishimura K, et al. J Pharm Biomed Anal. 2019 Sep 10;174:248-255. doi: 10.1016/j.jpba.2019.05.063. Epub 2019 May 28. J Pharm Biomed Anal. 2019. PMID: 31181487
Each MIP recognized a template molecule the most, while CPZ metabolites, desmethyl CPZ (DM-CPZ), CPZ sulfoxide (CPZ-SO) and 7-hydroxy CPZ (7-OH-CPZ), were moderately recognized on MIP(CPZ) and MIP(BPZ). Furthermore, both MIPs gave the similar retention and molecular-recogn …
Each MIP recognized a template molecule the most, while CPZ metabolites, desmethyl CPZ (DM-CPZ), CPZ sulfoxide (CPZ-SO) and 7-hydroxy CPZ (7 …
Characterization of the influence of nitric oxide donors on intestinal absorption of macromolecules.
Takahashi K, Numata N, Kinoshita N, Utoguchi N, Mayumi T, Mizuno N. Takahashi K, et al. Int J Pharm. 2004 Nov 22;286(1-2):89-97. doi: 10.1016/j.ijpharm.2004.08.006. Int J Pharm. 2004. PMID: 15501005
The NOC7-induced enhancing effect was prevented by the co-administration of 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazole-1-oxyl-3-oxide sodium salt (C-PTIO), an NO scavenger; tiron, an O2(-) scavenger; mannitol, an OH* scavenger, and deferoxamine, peroxynitrate scaveng …
The NOC7-induced enhancing effect was prevented by the co-administration of 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazole-1-oxyl-3-oxide …