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    Article

    Photostability evaluation of manidipine tablets and structural determination of its photoproducts

    Manidipine (MP) is a dihydropyridine drug, which is treated for the reduction of high blood pressure. The aim of this study is to clarify the photochemical behavior of MP in the case of ultraviolet light (UV) ...

    Kohei Kawabata, Kyoka Hirai, Shiori Akimoto, Masanori Inagaki in Analytical Sciences (2024)

  2. No Access

    Article

    The evaluation of photochemical behavior of antihistaminic drug triprolidine in an aqueous media

    Photodegradation is widely known as a changer of both the quality and the quantity of several chemical compounds. In this study, we sought to examine the photochemical behavior of triprolidine (TRP), which is ...

    Kohei Kawabata, Misaki Masumoto, Masanori Inagaki, Hiroyuki Nishi in Analytical Sciences (2023)

  3. No Access

    Article

    Photodegradation profiling of nitrendipine: evaluation of active pharmaceutical ingredient, tablets and its altered forms

    Nitrendipine (NTR) is a dihydropyridine drug, which is well-known as a photodegradable pharmaceutical. However, the photochemical reaction of NTR has not been evaluated in detail from now. In this study, we pe...

    Kohei Kawabata, Haruka Muraoka, Masatsugu Miyara, Yaichiro Kotake in Analytical Sciences (2023)

  4. Article

    Phospholipid analysis of two influenza A virus-infected cell lines differing in their viral replication kinetics

    Fluctuations in phospholipid composition in infected cells during influenza A virus replication were analyzed using two different susceptible host cell lines: H292 cells, exhibiting a rapid cytopathic effect, ...

    Kohei Kawabata, Yuichiro Sato, Takanori Kubo, Akira Tokumura in Archives of Virology (2023)

  5. Article

    Open Access

    Structure determination of clinofibrate photoproducts generated by ultraviolet-light irradiation in aqueous media

    Photodegradation of clinofibrate, which is one of the fibrate drugs, was evaluated and chemical structures of its photoproducts were determined. Clinofibrate in aqueous media was photodegraded gradually by the...

    Kohei Kawabata, Shiori Akimoto, Masanori Inagaki, Hiroyuki Nishi in SN Applied Sciences (2021)

  6. Article

    Open Access

    Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics

    Topological phases are enriched in non-equilibrium open systems effectively described by non-Hermitian Hamiltonians. While several properties unique to non-Hermitian topological systems were uncovered, the fun...

    Kohei Kawabata, Sho Higashikawa, Zong** Gong, Yuto Ashida in Nature Communications (2019)

  7. No Access

    Article

    Abnormalities in the Metabolism of Fatty Acids and Triacylglycerols in the Liver of the Goto-Kakizaki Rat: A Model for Non-Obese Type 2 Diabetes

    The Goto-Kakizaki (GK) rat is widely used as an animal model for spontaneous-onset type 2 diabetes without obesity; nevertheless, little information is available on the metabolism of fatty acids and triacylgly...

    Minako Karahashi, Yuko Hirata-Hanta, Kohei Kawabata, Daisuke Tsutsumi in Lipids (2016)