relation: https://khub.utp.edu.my/scholars/11523/ title: In vivo biocompatibility, pharmacokinetics, antitumor efficacy, and hypersensitivity evaluation of ionic liquid-mediated paclitaxel formulations creator: Chowdhury, M.R. creator: Moshikur, R.M. creator: Wakabayashi, R. creator: Tahara, Y. creator: Kamiya, N. creator: Moniruzzaman, M. creator: Goto, M. description: In order to prevent common hypersensitivity reactions to paclitaxel injections (Taxol), we previously reported an ionic liquid-mediated paclitaxel (IL-PTX)formulation with small particle size and narrow size distribution. The preliminary work showed high PTX solubility in the IL, and the formulation demonstrated similar antitumor activity to Taxol, while inducing a smaller hypersensitivity effect in in vitro cell experiments. In this study, the stability of the IL-PTX formulation was monitored by quantitative HPLC analysis, which showed that IL-PTX was more stable at 4 °C than at room temperature. The in vivo study showed that the IL-PTX formulation could be used in a therapeutic application as a biocompatible component of a drug delivery system. To assess the in-vivo biocompatibility, IL or IL-mediated formulations were administered intravenously by maintaining physiological buffered conditions (neutral pH and isotonic salt concentration). From in vivo pharmacokinetics data, the IL-PTX formulation was found to have a similar systemic circulation time and slower elimination rate compared to cremophor EL mediated paclitaxel (CrEL-PTX). Furthermore, in vivo antitumor and hypersensitivity experiments in C57BL/6 mice revealed that IL-PTX had similar antitumor activity to CrEL-PTX, but a significantly smaller hypersensitivity effect compared with CrEL-PTX. Therefore, the IL-mediated formulation has potential to be an effective and safe drug delivery system for PTX. © 2019 Elsevier B.V. publisher: Elsevier B.V. date: 2019 type: Article type: PeerReviewed identifier: Chowdhury, M.R. and Moshikur, R.M. and Wakabayashi, R. and Tahara, Y. and Kamiya, N. and Moniruzzaman, M. and Goto, M. (2019) In vivo biocompatibility, pharmacokinetics, antitumor efficacy, and hypersensitivity evaluation of ionic liquid-mediated paclitaxel formulations. International Journal of Pharmaceutics, 565. pp. 219-226. ISSN 03785173 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065414856&doi=10.1016%2fj.ijpharm.2019.05.020&partnerID=40&md5=b60958bb8dae38009058c31b09a12caa relation: 10.1016/j.ijpharm.2019.05.020 identifier: 10.1016/j.ijpharm.2019.05.020