古堅 彩子 (フルゲン アヤコ)

Furugen, Ayako

写真a

所属(所属キャンパス)

薬学部 薬学科 (芝共立)

職名

准教授(有期)

経歴 【 表示 / 非表示

  • 2013年04月
    -
    2015年06月

    北海道大学病院 薬剤部 薬剤師, Hokkaido University Hospital

  • 2015年07月
    -
    2023年03月

    北海道大学 大学院薬学研究院 助教, Faculty of Pharmaceutical Sciences

  • 2024年04月
    -
    継続中

    慶應義塾大学, 薬学部, 准教授 (有期)

  • 2024年05月
    -
    継続中

    北海道大学, 大学院薬学研究院, 招へい教員(客員准教授)

学歴 【 表示 / 非表示

  • 2004年04月
    -
    2008年03月

    北海道大学, 薬学部 , 総合薬学科

    大学, 卒業

  • 2008年04月
    -
    2010年03月

    北海道大学, 大学院生命科学院, 生命医薬科学コース 修士課程

    大学院, 修了, 修士

  • 2010年04月
    -
    2013年03月

    北海道大学, 大学院生命科学院, 生命医薬科学コース 博士課程

    大学院, 修了, 博士

免許・資格 【 表示 / 非表示

  • 薬剤師免許, 2008年04月

 

研究分野 【 表示 / 非表示

  • ライフサイエンス / 医療薬学

 

論文 【 表示 / 非表示

  • Validated UPLC-MS/MS method for quantification of melatonin receptor agonists and dual orexin receptor antagonists in human plasma and breast milk: Application to quantify suvorexant and lemborexant in clinical samples

    Hina Ishikawa, Ayako Furugen, Ayako Nishimura, Takeshi Umazume, Shuhei Ishikawa, Ryoichi Aoyagi, Katsuya Narumi, Keisuke Okamoto, Yoh Takekuma, Mitsuru Sugawara, Masaki Kobayashi

    Journal of Pharmaceutical and Biomedical Analysis (Elsevier BV)  251   116432 - 116432 2024年12月

    研究論文(学術雑誌), 責任著者, 査読有り,  ISSN  0731-7085

  • Effects of famotidine use during pregnancy: an observational cohort study

    Nishimura A., Furugen A., Kobayashi M., Takekuma Y., Yakuwa N., Goto M., Hayashi M., Murashima A., Sugawara M.

    Journal of Pharmaceutical Health Care and Sciences 10 ( 1 ) 70 - 70 2024年12月

    研究論文(学術雑誌), 査読有り

     概要を見る

    Background: Famotidine, a histamine2-receptor antagonist (H2Ras), is widely used to treat and prevent gastrointestinal symptoms during pregnancy. Although several studies have reported the use of H2Ras during pregnancy, limited data on famotidine were included in these reports. Therefore, we analyzed pregnancy outcome data to evaluate the effects of famotidine use during pregnancy on the fetus. Methods: Pregnancy outcome data were used for females enrolled in two Japanese facilities that provided counseling on drug use during pregnancy between April 1988 and December 2017. For the primary endpoint, the incidence of congenital malformations was calculated from the data of live birth to pregnant women who took famotidine (n = 330) or drugs considered to exert no teratogenic risk (control, n = 1,407) during the first trimester of pregnancy. Considering secondary endpoints, the incidence of obstetric outcomes, including preterm delivery, was calculated from data on the use of famotidine (n = 347) and controls (n = 1,476) during the entire pregnancy. The crude odds ratios (cORs) for the incidence of congenital malformations were calculated using univariate logistic regression analysis, with the control group used as the reference. Adjusted ORs (aORs) were calculated using multivariate logistic regression analysis adjusted for various other factors. Results: The incidences of congenital malformations in the famotidine and control groups were 3.9% and 2.8%, respectively. There was no significant difference between the famotidine and control groups (cOR: 1.40 [95% CI:0.68–2.71], aOR: 1.06 [95% CI:0.51–2.16]). Conversely, the preterm delivery rates were 8.1% and 3.8% in the famotidine and control groups, respectively, indicating a significant difference (cOR: 2.00 [95% CI:1.20–3.27]). However, the multivariate analysis eliminated famotidine use as a confounding factor. Conclusions: This observational cohort study revealed that exposure to famotidine during the first trimester of pregnancy was not associated with an increased risk of congenital malformations in infants. Although a higher rate of preterm delivery was detected in famotidine users when compared with controls, this could be attributed to confounding factors, such as complications.

  • Association Between Multisystem Immune-related Adverse Events and Progression-free Survivals in PD-1/PD-L1 Inhibitor Monotherapy

    Yamaguchi A., Saito Y., Okamoto K., Furugen A., Narumi K., Takekuma Y., Sakakibara-Konishi J., Shimizu Y., Kinoshita I., Sugawara M., Kobayashi M.

    In Vivo 38 ( 6 ) 2886 - 2896 2024年11月

    研究論文(学術雑誌), 査読有り,  ISSN  0258851X

     概要を見る

    Background/Aim: Immune-related adverse events (irAEs) occur in various organs, and sometimes multiply following treatment with immune checkpoint inhibitors (ICIs). This study aimed to determine the association between the number of irAEs and clinical outcomes. Patients and Methods: This was a retrospective study that included patients with lung cancer, melanoma, and head and neck cancer who were treated with anti-programmed cell death (ligand) 1 (PD-1/PD-L1) monotherapy. We evaluated the association between the number of irAEs and progression-free survival (PFS) in the simple Cox regression analysis. To eliminate the immortal-time bias, an additional landmark analysis was performed. Results: In total, 92, 69, and 37 patients were allocated to the no, single, and multisystem irAEs groups, respectively. The multisystem irAEs were associated with better PFS compared to the no irAE group. In contrast, at the 12-week landmark, multisystem irAEs were associated with poor PFS compared to the no irAEs group. Furthermore, the rate of treatment suspension owing to irAEs in the multisystem irAEs group (62.5%) was higher than that in the single irAE group (17.3%) at the 12-week landmark. Conclusion: The incidence of multisystem irAEs was associated with improved clinical outcomes in patients with lung cancer, melanoma, and head and neck cancer treated with PD-1/PD-L1 inhibitor monotherapy. However, these results may be influenced by a potential immortal-time bias. When accounting for this bias, the early development of multisystem irAEs within 12 weeks was linked to treatment suspension and poorer clinical outcomes.

  • Alteration in folate carrier expression via histone deacetylase inhibition in BeWo human placental choriocarcinoma cells.

    Yuki Miyazawa, Ayako Furugen, Ryoichi Aoyagi, Haruna Kosugi, Ayako Nishimura, Takeshi Umazume, Katsuya Narumi, Masaki Kobayashi

    Toxicology in vitro : an international journal published in association with BIBRA    105934 - 105934 2024年09月

    研究論文(学術雑誌), 責任著者, 査読有り

     概要を見る

    Folates are essential nutrients for fetal development during pregnancy. Valproic acid (VPA), an inhibitor of histone deacetylases (HDACs), alters the expression of folate carriers in placental cells; however, the underlying mechanisms remain unclear. Here, we aimed to determine the profiles of folate carriers (folate receptor alpha [FOLR1], solute carrier [SLC]-19A1, and SLC46A1) after inhibition of HDACs, especially class I and IIa HDACs, using different inhibitors and gene knockdown tests. Quantitative polymerase chain reaction revealed that BeWo cells (a trophoblast model) expressed HDACs and folate carriers, similar to human placental villi. FOLR1 expression was upregulated by VPA, apicidin, and trichostatin A, but downregulated by MS-275 after 24 h treatment. VPA and apicidin upregulated the expression of SLC46A1. These inhibitors downregulated SLC19A1 expression. TMP269 (a class IIa inhibitor) did not affect folate carrier levels. HDAC1/2 knockdown upregulated FOLR1 and SLC46A1 levels, whereas HDAC1/3 knockdown downregulated FOLR1 levels. Our findings suggest that the pharmacological inhibition of class I HDACs alters the expression of folate carriers in BeWo cells. By contrast, HDAC inhibitors exert different regulatory effects on folate carriers. Moreover, HDAC1/2 inhibition may be a potential mechanism involved in altering FOLR1 and SLC46A1 levels.

  • Contribution of aldehyde oxidase to methotrexate-induced hepatotoxicity: In Vitro and pharmacoepidemiological approaches.

    Ayako Moriyama, Hinata Ueda, Katsuya Narumi, Shuho Asano, Ayako Furugen, Yoshitaka Saito, Masaki Kobayashi

    Expert opinion on drug metabolism & toxicology 2024年05月

    研究論文(学術雑誌), 査読有り

     概要を見る

    BACKGROUND: Methotrexate (MTX) is partially metabolized by aldehyde oxidase (AOX) in the liver and its clinical impact remains unclear. In this study, we aimed to demonstrate how AOX contributes to MTX-induced hepatotoxicity in vitro and clarify the relationship between concomitant AOX inhibitor use and MTX-associated liver injury development using the U.S. Food and Drug Administration Adverse Event Reporting System (FAERS). METHODS: We assessed intracellular MTX accumulation and cytotoxicity using HepG2 cells. We used the FAERS database to detect reporting odds ratio (ROR)-based MTX-related hepatotoxicity event signals. RESULTS: AOX inhibition by AOX inhibitor raloxifene and siRNA increased the MTX accumulation in HepG2 cells and enhanced the MTX-induced cell viability reduction. In the FAERS analysis, the ROR for MTX-related hepatotoxicity increased with non-overlap of 95% confidence interval when co-administered with drugs with higher Imax, u (maximum unbound plasma concentration)/IC50 (half-maximal inhibitory concentration for inhibition of AOX) calculated based on reported pharmacokinetic data. CONCLUSION: AOX inhibition contributed to MTX accumulation in the liver, resulting in increased hepatotoxicity. Our study raises concerns regarding MTX-related hepatotoxicity when co-administered with drugs that possibly inhibit AOX activity at clinical concentrations.

全件表示 >>

総説・解説等 【 表示 / 非表示

  • メトトレキサート誘発性肝障害におけるアルデヒドオキシダーゼの寄与-基礎および薬剤疫学的アプローチによる検証-

    鳴海克哉, 森山綾子, 上田一奈太, 淺野秀峰, 古堅彩子, 小林正紀

    医療薬学フォーラム講演要旨集 31st 2023年

    ISSN  1348-0863

  • 長時間作用型ベンゾジアゼピン(BZD)系薬のMilk/Plasma ratio(M/P比)およびRelative Infant Dose(RID)の算出

    西村あや子, 古堅彩子, 馬詰武, 北村聖花, 武隈洋, 菅原満, 菅原満, 小林正紀

    医療薬学フォーラム講演要旨集 31st 2023年

    ISSN  1348-0863

  • 乳汁・血漿中lacosamideのUPLC/MS/MS定量法ならびに乳汁移行性評価への応用

    古堅彩子, 西村あや子, 馬詰武, 石川陽菜, 鳴海克哉, 小林正紀

    医療薬学フォーラム講演要旨集 31st 2023年

    ISSN  1348-0863

  • 腹膜透析中に発症した焦点性てんかんに対してラコサミドを導入した小児例の経験

    植田 佑樹, 佐藤 泰征, 林 麻子, 上田 泰弘, 木村 修平, 後藤 健, 中久保 佐千子, 中島 翠, 江川 潔, 岡本 孝之, 白石 秀明, 古堅 彩子, 小林 正紀, 真部 淳

    てんかん研究 ((一社)日本てんかん学会)  40 ( 2 ) 467 - 467 2022年08月

    ISSN  0912-0890

  • 歯科領域における経口第3世代セフェム系抗菌薬減少戦略の評価:中断時系列分析

    山神彰, 鳴海克哉, 齋藤佳敬, 古堅彩子, 今井俊吾, 北川善政, 大廣洋一, 高木諒, 武隈洋, 菅原満, 菅原満, 小林正紀, 小林正紀

    医療薬学フォーラム講演要旨集 30th 2022年

    ISSN  1348-0863

全件表示 >>

競争的研究費の研究課題 【 表示 / 非表示

  • トロホブラスト分化マーカーを指標とした薬剤による胎児毒性の新規評価法の開発

    2023年11月
    -
    2024年06月

    横山臨床薬理研究助成基金, 令和5年度研究助成(一般研究助成), 研究代表者

  • 胎盤幹細胞由来syncytiotrophoblastを用いた薬物の胎盤通過性評価とメカニズムの解明

    2023年08月
    -
    2025年03月

    日本学術振興会, 科学研究費助成事業, 古堅 彩子, 研究活動スタート支援, 未設定

  • 女性におけるVitamin D 状態の評価と胎盤機能との関連性

    2022年07月
    -
    2023年06月

    公益財団法人 三島海雲記念財団 2022年度 学術研究奨励金, 研究代表者

  • 不眠に対するセルフメディケーションを見据えた睡眠薬の乳汁移行に関する研究

    2022年06月
    -
    2023年03月

    公益財団法人 一般用医薬品セルフメディケーション振興財団 令和4年度(2022年) 調査・研究助成, 研究代表者

  • 妊娠期酸化ストレス制御を指向した、抗酸化物質の胎盤移行および機能の多面的評価

    2022年06月
    -
    2023年03月

    一般財団法人 旗影会, 2022 年度 旗影会研究助成, 研究代表者

全件表示 >>

受賞 【 表示 / 非表示

  • 2024年度 日本薬学会賞女性薬学研究者奨励賞

    古堅 彩子, 2023年

  • 2019年度 日本薬学会北海道支部 奨励賞 (医療系)

    古堅 彩子, 2019年

  • 平成27 年度 Postdoctoral Award

    古堅 彩子, 2015年, 日本医療薬学会

 

担当授業科目 【 表示 / 非表示

  • 卒業研究1(薬学科)

    2024年度

  • 実務実習事前学習5

    2024年度

  • 英語演習(薬学科)

    2024年度

  • 早期体験学習(薬学科)

    2024年度

  • 地域における薬局と薬剤師

    2024年度

 

委員歴 【 表示 / 非表示

  • 2023年06月
    -
    2024年03月

    北海道薬剤師会, 学術・情報委員会委員

  • 2022年07月
    -
    継続中

    日本薬学会医療薬科学部会, 若手世話人