Updated on 2025/08/19

写真a

 
AIBA Tetsuya
 
Organization
Faculty of Medicine, Dentistry and Pharmaceutical Sciences Associate Professor
Position
Associate Professor
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Degree

  • 博士(薬学) ( 京都大学 )

Research Interests

  • 投与設計

  • 速度論

  • バイオアベイラビリティ

  • 薬物代謝

  • 薬物動態

  • Clinical Pharmacokinetics

  • Bioavailability

  • 消化管吸収

Research Areas

  • Life Science / Clinical pharmacy

  • Life Science / Pharmacology

  • Life Science / Pharmaceutical chemistry and drug development sciences

Education

  • Kyoto University   薬学研究科   医療薬剤学

    - 1991

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    Country: Japan

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  • Kyoto University    

    - 1991

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  • Kyoto University   薬学部   薬学科

    - 1987

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    Country: Japan

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  • Kyoto University    

    - 1987

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Research History

  • - 岡山大学医歯薬学総合研究科 准教授

    2005

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  • - Associate Professor,Graduate School of Medicine, Dentistry and Pharmaceutical Sciences,Okayama University

    2005

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Professional Memberships

 

Papers

  • An Underlying Mechanism for the Altered Hypoglycemic Effects of Nateglinide in Rats with Acute Peripheral Inflammation. Reviewed

    Haruka Toko, Manami Ogino, Akane Nishiwaki, Moeko Kojina, Tetsuya Aiba

    Biological and Pharmaceutical Bulletin   48 ( 1 )   51 - 59   2025.1

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    The hypoglycemic effects of nateglinide (NTG) were examined in rats with acute peripheral inflammation (API) induced by carrageenan treatment, and the mechanisms accounting for altered hypoglycemic effects were investigated. NTG was administered through the femoral vein in control and API rats, and its plasma concentration profile was characterized. The time courses of the changes in plasma glucose and insulin levels were also examined. Although the plasma concentration profile of NTG in API rats was marginally distinguishable from that in control rats, the hypoglycemic effect of NTG was more persistent in API rats than in control rats. In addition, NTG elevated the plasma level of insulin more intensely in API rats than in control rats. Then, the islets of Langerhans were procured by perfusing the pancreas with collagenase solution in control and API rats, and the pancreatic mRNA expression of preproinsulin (Ins1), as well as that of sulfonylurea receptor ABCC8 (Abcc8), were examined. As a result, the expression of preproinsulin and ABCC8 mRNA increased in API rats. These findings suggest that the hypoglycemic effect of NTG was potentiated in API rats due to increased insulin secretion in the pancreas, which was caused by enhanced preproinsulin synthesis and expression of the sulfonylurea receptor.

    DOI: 10.1248/bpb.b24-00582

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  • Altered Pharmacological Efficacy of Phenobarbital with the Treatment of 7,8-Dihydroxyflavone, an Agonist of Tropomyosin Receptor Kinase B, in Rats Reviewed

    Keiichiro Suzuki, Kazuya Matsumoto, Misa Takenaka, Tetsuya Aiba

    Biological and Pharmaceutical Bulletin   46 ( 1 )   86 - 94   2023.1

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Pharmaceutical Society of Japan  

    DOI: 10.1248/bpb.b22-00617

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  • Acute peripheral inflammation increases plasma concentration of hypoglycemic agent nateglinide with decreased hepatic drug-metabolizing activity in rats. Reviewed

    Kojina M, Suzuki K, Nishiwaki A, Aiba T

    Biological and Pharmaceutical Bulletin   44 ( 1 )   96 - 102   2021.1

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  • Effects of dexamethasone to reverse decreased hepatic midazolam metabolism in rats with acute renal failure. Reviewed

    Doi M, Kajikawa N, Aiba T

    Xenobiotica   50 ( 5 )   506 - 514   2020.3

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  • In Vivo Study on Mechanism Underlying Increased Pharmacological Effects of Phenobarbital in Rats with Glycerol-Induced Acute Renal Failure Reviewed

    Atsuyoshi Okada, Keiichiro Suzuki, Keisuke Hara, Moeko Kojina, Tetsuya Aiba

    Biological and Pharmaceutical Bulletin   42 ( 3 )   501 - 506   2019.3

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Pharmaceutical Society of Japan  

    DOI: 10.1248/bpb.b18-00659

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  • Altered hepatic drug-metabolizing activity in rats suffering from hypoxemia with experimentally induced acute lung impairment Reviewed

    Yuki Hori, Yasumasa Shimizu, Tetsuya Aiba

    Xenobiotica   48 ( 6 )   576 - 583   2018.6

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    DOI: 10.1080/00498254.2017.1349969

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  • Bortezomib combined with standard induction chemotherapy in Japanese children with refractory acute lymphoblastic leukemia Reviewed

    Akihiro Iguchi, Yuko Cho, Minako Sugiyama, Yukayo Terashita, Tadashi Ariga, Yosuke Hosoya, Shinsuke Hirabayashi, Atsushi Manabe, Keisuke Hara, Tetsuya Aiba, Tsugumi Shiokawa, Hiroko Tada, Norihiro Sato

    International Journal of Hematology   106 ( 2 )   291 - 298   2017.8

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    DOI: 10.1007/s12185-017-2235-z

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  • Correlation between the Efficacy of Lamotrigine and the Serum Lamotrigine Level during the Remission Phase of Acute Bipolar II Depression: A Naturalistic and Unblinded Prospective Pilot Study Reviewed

    Akiyoshi Kikkawa, Yoshihisa Kitamura, Tetsuya Aiba, Koichi Hiraki, Toshiaki Sendo

    Biological and Pharmaceutical Bulletin   40 ( 4 )   413 - 418   2017.4

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    DOI: 10.1248/bpb.b16-00725

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  • Similarities of Water-soluble Vitamin Components among Non-prescription Pharmaceutical Vitamin Products Generally Available on the Domestic Market Reviewed

    Keiichiro Suzuki, Moeko Kojina, Tetsuya Aiba

    YAKUGAKU ZASSHI   137 ( 5 )   595 - 602   2017

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    DOI: 10.1248/yakushi.16-00227

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  • In vivo application of chitosan to improve bioavailability of cyanocobalamin, a form of vitamin B-12, following intraintestinal administration in rats Reviewed

    Yuko Goto, Ayumi Masuda, Tetsuya Aiba

    International Journal of Pharmaceutics   483 ( 1-2 )   250 - 255   2015.4

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    DOI: 10.1016/j.ijpharm.2015.02.016

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  • Pharmaceutical properties of a low-substituted hydroxypropyl cellulose (L-HPC) hydrogel as a novel external dressing Reviewed

    Atsushi Ogawa, Sachie Nakayama, Mami Uehara, Yasuhiro Mori, Mai Takahashi, Tetsuya Aiba, Yuji Kurosaki

    International Journal of Pharmaceutics   477 ( 1-2 )   546 - 552   2014.12

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    DOI: 10.1016/j.ijpharm.2014.10.043

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  • 双極性障害II型患者のうつ状態急性期に対するラモトリギンの血中濃度と効果との関係および寛解までの服用日数に関する検討

    吉川明良, 吉川明良, 北村佳久, 合葉哲也, 和田健, 森田幸孝, 岩本崇志, 開浩一, 千堂年昭

    臨床薬理   45 ( Supplement )   S250 - S250   2014.11

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    Language:Japanese   Publisher:(一社)日本臨床薬理学会  

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  • Effect of Carrageenan-induced Acute Peripheral Inflammation on the Pharmacokinetics and Hepatic Metabolism of Midazolam in Rats Reviewed

    Noriko Kajikawa, Masami Doi, Jun-ichi Kusaba, Tetsuya Aiba

    Drug Metabolism and Pharmacokinetics   29 ( 5 )   400 - 406   2014.10

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    DOI: 10.2133/dmpk.DMPK-14-RG-020

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  • Interspecies comparison of hepatic metabolism of six newly synthesized retinoid X receptor agonistic compounds possessing a 6-[N-ethyl-N-(alkoxyisopropylphenyl)amino]nicotinic acid skeleton in rat and human liver microsomes Reviewed

    Yoshiki Murakami, Yasumasa Shimizu, Akemi Ogasawara, Satoshi Ueshima, Mariko Nakayama, Kohei Kawata, Hiroki Kakuta, Tetsuya Aiba

    Drug Development and Industrial Pharmacy   40 ( 8 )   1065 - 1071   2014.8

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    DOI: 10.3109/03639045.2013.807278

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  • Utility of simple suspension method compared to loss of drug using crushing method on tube administration

    ZAMAMI YOSHITO, KOYAMA TOSHIHIRO, AIBA TETSUYA, AMANO MANABU, ANDO TETSUAKI, KURATA NAOMI, NAWA HIDEKI, NAKURA HIRONORI, KITAMURA YOSHIHISA, SENDO TOSHIAKI

    静脈経腸栄養   29 ( 4 )   1027-1033 (J-STAGE) - 1033   2014.7

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    DOI: 10.11244/jjspen.29.1027

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  • Effects of Peritoneal Dialysis on Pharmacotherapy: A Deductive Pharmacokinetic-model Approach to Predict Drug Concentration Profiles in Plasma and Peritoneal Fluid Reviewed

    Mizuki Horiuchi, Soichiro Moriyama, Yukiko Takahata, Tetsuya Aiba, Yuji Kurosaki

    Drug Metabolism and Pharmacokinetics   29 ( 2 )   154 - 161   2014.4

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    DOI: 10.2133/dmpk.DMPK-13-RG-067

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  • 双極性障害患者に対するラモトリギンの使用実態調査と考察

    Akiyoshi Kikkawa, Yoshihisa Kitamura, Ken Wada, Yukitaka Morita, Takashi Iwamoto, Tetsuya Aiba, Kouiti Hiraki, Toshiaki Sendou

    日本病院薬剤師会雑誌   50 ( 4 )   491 - 494   2014

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  • 遮光器具を用いた光に不安定な薬剤の含量減少の抑制について

    座間味義人, 座間味義人, 座間味義人, 東恩納司, 安藤哲信, 武藤浩司, 天野学, 倉田なおみ, 合葉哲也, 北村佳久, 千堂年昭

    静脈経腸栄養   29 ( 3 )   SUP54(J-STAGE)   2014

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  • Effect of Carrageenan-Induced Acute Peripheral Inflammation on the Electrolyte Disposition to Cerebrospinal Fluid in Rats Reviewed

    Kentaro Kono, Atsuyoshi Okada, Atsuko Ishikawa, Tetsuya Aiba

    Biological and Pharmaceutical Bulletin   36 ( 11 )   1829 - 1834   2013.11

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    DOI: 10.1248/bpb.b13-00531

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  • 双極性障害患者に対するラモトリギンの使用実態調査と考察

    吉川明良, 北村佳久, 合葉哲也, 和田健, 森田幸孝, 岩本崇志, 開浩一, 千堂年昭

    日本医療薬学会年会講演要旨集   23rd   433 - 433   2013.8

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  • The Effects of Body Weight and Combination Drug Therapy on the Serum Concentrations of Zonisamide in 94 Epileptic dogs: An Epidemiological Analysis Reviewed

    Koya Fukunaga, Tetsuya Aiba, Miyoko Saito, Makoto Muto, Naoyuki Watanabe, Keiko Uchida, Seiichi Okuno, Takayuki Kobayashi, Kensuke Orito

    International Journal of Appled Research in Veterinary Medicine   10 ( 3 )   258 - 263   2012.10

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  • In Vivo Application of Chitosan to Facilitate Intestinal Acyclovir Absorption in Rats Reviewed

    Ayumi Masuda, Yuko Goto, Yuji Kurosaki, Tetsuya Aiba

    Journal of Pharmaceutical Sciences   101 ( 7 )   2449 - 2456   2012.7

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    DOI: 10.1002/jps.23170

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  • Microdialysis法を用いた薬物の筋肉内局所動態評価 局所冷却による局所薬物利用率の増大

    牧之段 敬一, 東恩納 司, 崎山 達矢, 合葉 哲也, 黒崎 勇二

    日本DDS学会学術集会プログラム予稿集   28回   122 - 122   2012.6

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  • 新規RXRアゴニスト及びその類縁化合物のヒト肝における代謝特性の予測

    合葉 哲也, 村上 由樹, 清水 康正, 川田 浩平, 中山 真理子, 小笠原 明美, 岡田 淳芳, 黒崎 勇二, 加来田 博貴

    日本薬学会年会要旨集   132年会 ( 2 )   269 - 269   2012.3

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  • Comparative study on altered hepatic metabolism of CYP3A substrates in rats with glycerol-induced acute renal failure Reviewed

    Jun-ichi Kusaba, Noriko Kajikawa, Hiromu Kawasaki, Yuji Kurosaki, Tetsuya Aiba

    Biopharmaceutics and Drug Disposition   33 ( 1 )   22 - 29   2012.1

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    DOI: 10.1002/bdd.1774

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  • 肺移植患者におけるシクロスポリン経口クリアランスに及ぼす移植後経過日数の影響

    土井原 夕貴, 上島 智, 合葉 哲也, 佐藤 智昭, 河崎 陽一, 山根 正修, 大藤 剛宏, 松永 尚, 黒崎 勇二, 三好 新一郎, 千堂 年昭

    臨床薬理   42 ( Suppl. )   S268 - S268   2011.10

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  • P-0589 経腸栄養剤を用いた疎水性薬剤の簡易懸濁法適用の検討(一般演題 ポスター発表,医薬品情報・データベース,Enjoy Pharmacists' Lifestyles)

    座間味 義人, 松永 康臣, 合葉 哲也, 天野 学, 小山 敏広, 四宮 一昭, 北村 佳久, 黒崎 勇二, 佐々木 健二, 野田 真吾, 千堂 年昭, 川崎 博己, 五味田 裕

    日本医療薬学会年会講演要旨集   21   280 - 280   2011.9

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  • Pharmacodynamic Characterization of Nitric Oxide-Mediated Vasodilatory Activity in Isolated Perfused Rat Mesenteric Artery Bed Reviewed

    Shinsuke Inoue, Tetsuya Aiba, Yasuyuki Masaoka, Keiko Shimizu, Yukiko Komori, Mitsunobu Mio, Shingo Takatori, Hiromu Kawasaki, Yuji Kurosaki

    Biological and Pharmaceutical Bulletin   34 ( 9 )   1487 - 1492   2011.9

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    DOI: 10.1248/bpb.34.1487

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  • Pharmacokinetic properties of newly synthesized retinoid X receptor agonists possessing a 6-[N-ethyl-N-(3-alkoxy-4-isopropylphenyl)amino]nicotinic acid skeleton in rats Reviewed

    Akemi Ogasawara, Yoshiki Murakami, Nobumasa Yakushiji, Fuminori Ohsawa, Jun-ichi Kusaba, Tetsuya Aiba, Yuji Kurosaki, Hiroki Kakuta

    Drug Development and Industrial Pharmacy   37 ( 9 )   1060 - 1067   2011.9

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    DOI: 10.3109/03639045.2011.559247

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  • 肺移植患者におけるタクロリムス血中濃度推移の母集団解析

    上島 智, 合葉 哲也, 佐藤 智昭, 河崎 陽一, 山根 正修, 大藤 剛宏, 松永 尚, 黒崎 勇二, 三好 新一郎, 千堂 年昭

    TDM研究   28 ( 3 )   s180 - s180   2011.6

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  • 薬物の筋肉内拡散・分布動態に及ぼす血流量の影響 局所冷却時の動態特性

    牧之段 敬一, 東恩納 司, 村上 仁美, 合葉 哲也, 黒崎 勇二

    日本薬剤学会年会講演要旨集   26年会   141 - 141   2011.5

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  • Empirical Approach for Improved Estimation of Unbound Serum Concentrations of Valproic Acid in Epileptic Infants by Considering Their Physical Development Reviewed

    Satoshi Ueshima, Tetsuya Aiba, Tomoaki Sato, Hisashi Matsunaga, Yuji Kurosaki, Yoko Ohtsuka, Toshiaki Sendo

    Biological and Pharmaceutical Bulletin   34 ( 1 )   108 - 113   2011.1

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    DOI: 10.1248/bpb.34.108

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  • いま求められる薬剤師の教育力

    調剤と情報   17 ( 1 )   17 - 18   2011

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  • ジェネリック医薬品使用・銘柄変更ガイダンス(第二版) Reviewed

    合葉哲也, 出石啓治, 飯島康典, 岩月進, 加藤久幸, 小林大高, 坂巻弘之

    日本薬剤師会雑誌   63 ( 8 )   947 - 953   2011

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    Other Link: http://search.jamas.or.jp/link/ui/2011270337

  • Altered Electrolyte Handling of the Choroid Plexus in Rats with Glycerol-induced Acute Renal Failure Reviewed

    Atsuko Ishikawa, Kentaro Kono, Rie Sakae, Tetsuya Aiba, Hiromu Kawasaki, Yuji Kurosaki

    Biopharmaceutics and Drug Disposition   31 ( 8-9 )   455 - 463   2010.11

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    DOI: 10.1002/bdd.726

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  • 小児におけるテイコプラニンの母集団薬物動態解析 血中濃度に及ぼす基礎疾患の影響

    槇田 崇志, 上島 智, 佐藤 智昭, 合葉 哲也, 黒崎 勇二, 松永 尚, 千堂 年昭

    TDM研究   27 ( 3 )   s155 - s155   2010.6

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  • 小児てんかん患者を対象としたバルプロ酸血中遊離型濃度の予測精度評価

    小松 仁美, 上島 智, 佐藤 智昭, 松永 尚, 合葉 哲也, 黒崎 勇二, 大塚 頌子, 千堂 年昭

    TDM研究   27 ( 3 )   s191 - s191   2010.6

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  • 簡易懸濁用容器「けんだくん」を用いた光に不安定な薬剤の含量減少の抑制について

    座間味義人, 東恩納司, 安藤哲信, 武藤浩司, 天野学, 倉田なおみ, 合葉哲也, 北村佳久, 松永尚, 千堂年昭, 黒崎勇二, 佐々木健二, 川崎博己, 五味田裕

    日本薬学会年会要旨集   130th ( 4 )   284 - 284   2010.3

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  • 血管平滑筋弛緩作用の薬力学モデル解析

    合葉 哲也, 井上 真輔, 正岡 康幸, 清水 けい子, 小森 有希子, 高取 真吾, 見尾 光康, 川崎 博己, 黒崎 勇二

    日本薬学会年会要旨集   130年会 ( 4 )   265 - 265   2010.3

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  • 新規骨格を有するRXRアゴニストの体内動態に関する基礎的検討

    村上 由樹, 小笠原 明美, 大澤 史宜, 合葉 哲也, 川崎 博己, 加来田 博貴, 黒崎 勇二

    日本薬学会年会要旨集   130年会 ( 4 )   265 - 265   2010.3

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  • Population Pharmacokinetic Analysis of Vancomycin Using Serum Cystatin C as a Marker of Renal Function Reviewed

    Akihiro Tanaka, Tetsuya Aiba, Takashi Otsuka, Katsuya Suemaru, Tatsuya Nishimiya, Tomoyoshi Inoue, Mitsuharu Murase, Yuji Kurosaki, Hiroaki Araki

    Antimicrobial Agents and Chemotherapy   54 ( 2 )   778 - 782   2010.2

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    DOI: 10.1128/AAC.00661-09

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  • 乳児を対象としたバルプロ酸血中遊離型濃度の母集団解析

    上島 智, 合葉 哲也, 佐藤 智昭, 松永 尚, 黒崎 勇二, 大塚 頌子, 千堂 年昭

    臨床薬理   40 ( Suppl. )   S242 - S242   2009.11

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  • ヨード造影剤と相互作用を有する薬剤に対するリスクマネジメント

    清水 けい子, 勝部 理早, 岡崎 宏美, 千堂 年昭, 合葉 哲也, 黒崎 勇二

    日本医療薬学会年会講演要旨集   19   304 - 304   2009.9

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  • Poor applicability of estimation method for adults to calculate unbound serum concentrations of valproic acid in epileptic neonates and infants Reviewed

    S. Ueshima, T. Aiba, N. Ishikawa, T. Sato, H. Kawasaki, Y. Kurosaki, Y. Ohtsuka, T. Sendo

    Journal of Clinical Pharmacy and Therapeutics   34 ( 4 )   415 - 422   2009.8

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    DOI: 10.1111/j.1365-2710.2009.01022.x

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  • 乳児を対象としたバルプロ酸血中遊離型濃度の高精度推定式の構築

    上島 智, 合葉 哲也, 佐藤 智昭, 川崎 博己, 黒崎 勇二, 大塚 頌子, 松永 尚, 千堂 年昭

    TDM研究   26 ( 3 )   s161 - s161   2009.6

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  • 新規レチノイドX受容体アゴニストNEt-3IPのラットにおける体内動態評価

    小笠原 明美, 薬師寺 信匡, 合葉 哲也, 川崎 博己, 黒崎 勇二, 加来田 博貴

    日本薬学会年会要旨集   129年会 ( 4 )   220 - 220   2009.3

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  • Efficacy of Peritoneal Dialysis of Tolbutamide in Rats Under Conditions of the Plasma Unbound Fraction Being Increased Reviewed

    Takashi Makita, Tetsuya Aiba, Yuki Izuwa, Yukiko Komori, Hiromu Kawasaki, Yuji Kurosaki

    Biopharmacutics and Drug Disposition   30 ( 1 )   1 - 8   2009.1

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    DOI: 10.1002/bdd.640

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  • Comparative Study of Increased Plasma Quinidine Concentration in Rats with Glycerol- and Cisplatin-induced Acute Renal Failure Reviewed

    Yuki Izuwa, Jun-ichi Kusaba, Mizuki Horiuchi, Tetsuya Aiba, Hiromu Kawasaki, Yuji Kurosaki

    Drug Metabolism and Pharmacokinetics   24 ( 5 )   451 - 457   2009

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    DOI: 10.2133/dmpk.24.451

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  • Decreased lithium disposition to cerebrospinal fluid in rats with glycerol-induced acute renal failure Reviewed

    Rie Sakae, Atsuko Ishikawa, Tomoko Niso, Yukiko Komori, Tetsuya Aiba, Hiromu Kawasaki, Yuji Kurosaki

    Pharmaceutical Research   25 ( 10 )   2243 - 2249   2008.10

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    DOI: 10.1007/s11095-008-9612-5

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  • Frequency of decreased renal function between patients treated with brand and generic products of vancomycin hydrochloride injection Reviewed

    Yuki Izuwa, Satoshi Ueshima, Tomoaki Sato, Masatoshi Okazaki, Tetsuya Aiba, Hiromu Kawasaki, Yuji Kurosaki, Toshiaki Sendo

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   128 ( 10 )   1493 - 1498   2008.10

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  • 岡山大学薬学部におけるPBL導入の現状と6年制に向けての課題

    岡崎宏美, 四宮一昭, 名倉弘哲, 北村佳久, 合葉哲也, 高山房子, 黒崎勇二, 川崎博己, 千堂年昭

    医療薬学フォーラム講演要旨集   16th   304   2008.7

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  • ロバスト回帰を用いる難治性ネフローゼ患者におけるシクロスポリンのAUC推定方法に関する検討

    上島 智, 合葉 哲也, 佐藤 智昭, 黒崎 勇二, 瀧上 慶一, 杉山 斉, 槇野 博史, 千堂 年昭

    TDM研究   25 ( 3 )   s182 - s182   2008.6

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  • 塩酸バンコマイシンの先発医薬品と後発医薬品における腎障害発現状況の比較検討

    出羽 祐基, 上島 智, 佐藤 智昭, 岡崎 昌利, 合葉 哲也, 川崎 博己, 黒崎 勇二, 千堂 年昭

    日本薬学会年会要旨集   128年会 ( 4 )   168 - 168   2008.3

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  • Characterization of non-linear relationship between total and unbound serum concentrations of valproic acid in epileptic children Reviewed

    S. Ueshima, T. Aiba, T. Makita, S. Nishihara, Y. Kitamura, Y. Kurosaki, H. Kawasaki, T. Sendo, Y. Ohtsuka, Y. Gomita

    Journal of Clinical Pharmacy and Therapeutics   33 ( 1 )   31 - 38   2008.2

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    DOI: 10.1111/j.1365-2710.2008.00885.x

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  • Individualized dosage adjustment of valproic acid based on unbound serum concentration in intractable epileptic children Reviewed

    Ueshima Satoshi, Aiba Tetsuya, Sato Tomoaki, Kawasaki Hiromu, Kurosaki Yuji, Ohtsuka Yoko, Sendo Toshiaki

    YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN   128   92   2008

  • Application of the correlation of in vitro dissolution behavior and in vivo plasma concentration profile (IVIVC) for soft-gel capsules - a pointless pursuit? Reviewed

    Hidekatsu Nishimura, Chlaki Hayashi, Tetsuya Aiba, Ichiro Okamoto, Yuji Miyamoto, Susumu Nakade, Kazuhisa Takeda, Yuji Kurosaki

    Biological and Pharmaceutical Bulletin   30 ( 11 )   2221 - 2225   2007.11

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    DOI: 10.1248/bpb.30.2221

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  • 乳幼児における血中遊離形バルプロ酸濃度の遡及的解析

    合葉 哲也, 上島 智, 石川 七瀬, 佐藤 智昭, 川崎 博己, 黒崎 勇二, 大塚 頌子, 千堂 年昭

    臨床薬理   38 ( Suppl. )   S237 - S237   2007.11

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  • Evaluation of intramuscular lateral distribution profile of topically administered acetaminophen in rats Reviewed

    Yuji Kurosaki, Masahiro Tagawa, Akiho Omoto, Hiroshi Suito, Yukiko Komori, Hiromu Kawasaki, Tetsuya Aiba

    International Journal of Pharmacetics   343 ( 1-2 )   190 - 195   2007.10

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    DOI: 10.1016/j.ijpharm.2007.05.020

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  • てんかん患児における遊離形バルプロ酸濃度に及ぼす併用薬の影響

    上島 智, 合葉 哲也, 佐藤 智昭, 川崎 博己, 黒崎 勇二, 千堂 年昭

    TDM研究   24 ( 3 )   s153 - s153   2007.7

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  • Alteration of therapeutic efficacy of lipid microspheres incorporating prostaglandin E-1 by mixing with aqueous solution Reviewed

    Yukiko Komori, Tetsuya Aiba, Miki Kushima, Hiromu Kawasaki, Yuji Kurosaki

    Journal of Pharmaceutical Sciences   96 ( 4 )   935 - 943   2007.4

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    DOI: 10.1002/jps.20790

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  • Effects of capsaicin on intestinal cephalexin absorption in rats Reviewed

    Yukiko Komori, Tetsuya Aiba, Risa Sugiyama, Chie Nakai, Hiromu Kawasaki, Yuji Kurosaki

    Biological and Pharmaceutical Bulletin   30 ( 3 )   547 - 551   2007.3

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    DOI: 10.1248/bpb.30.547

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  • Capsaicin-induced increase of intestinal cefazolin absorption in rats Reviewed

    Yukiko Komori, Tetsuya Aiba, Chie Nakai, Risa Sugiyama, Hiromu Kawasaki, Yuji Kurosaki

    Drug Metabolism and Pharmacokinetics   22 ( 6 )   445 - 449   2007

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  • Evaluation of diffusion controlled vesicle (DCV) system for oral extended release by the in-vivo dissolution behaviop and the resulting pharmacokinetic profiles

    Masanari Mabuchi, Kozo Tagawa, Tetsuya Aiba, Yuji Kurosaki

    Drug Meatbolism Reviews   39   270 - 270   2007

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  • 光に不安定な薬剤の簡易懸濁法を用いた投与方法について

    座間味 義人, 槙田 崇志, 安藤 哲信, 倉田 なおみ, 合葉 哲也, 黒崎 勇二, 天野 学, 名和 秀起, 北村 佳久, 千堂 年昭, 五味田 裕, 高山 房子, 川崎 博己

    日本医療薬学会年会講演要旨集   16   323 - 323   2006.9

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  • バルプロ酸TDMデータの遡及的解析

    槙田 崇志, 上島 智, 西原 茂樹, 合葉 哲也, 千堂 年昭, 川崎 博己, 五味田 裕, 黒崎 勇二

    日本医療薬学会年会講演要旨集   16   553 - 553   2006.9

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  • Peritoneal dialysis alters tolbutamide pharmacokinetics in rats with experimental acute renal failure Reviewed

    Tetsuya Aiba, Mizuki Horiuchi, Takashi Makita, Yukiko Komori, Hiromu Kawasaki, Yuji Kurosaki

    Drug Metabolism and Pharmacokinetics   21 ( 4 )   291 - 296   2006

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    DOI: 10.2133/dmpk.21.291

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  • The effects of culture conditions on CYP3A4 and MDR1 mRNA induction by 1α,25- dihydroxyvitamin D3 in human intestinal cell lines, Caco-2 and LS180. Reviewed

    Aiba T, Susa M, Fukumori S, Hashimoto Y

    Drug Metabolism and Pharmacokinetics   20 ( 4 )   268 - 274   2005.8

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  • Evaluation of phenytoin dosage regimens based on genotyping of CYP2C subfamily in routinely treated Japanese patients. Reviewed

    Taguchi M, Hongou K, Yagi S, Miyawaki T, Takizawa M, Aiba T, Hashimoto Y

    Drug Metabolism and Pharmacokinetics   20 ( 2 )   107 - 116   2005.5

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    DOI: 10.2133/dmpk.20.107

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  • Intestinal expression and metabolic activity of the CYP3A subfamily in female rats Reviewed

    T Aiba, M Yoshinaga, K Ishida, Y Takehara, Y Hashimoto

    Biological and Pharmaceutical Bulletin   28 ( 2 )   311 - 315   2005.2

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    DOI: 10.1248/bpb.28.311

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  • Pharmacokinetic characterization of transcellular transport and drug interaction of digoxin in Caco-2 cell monolayers Reviewed

    T Aiba, K Ishida, M Yoshinaga, M Okuno, Y Hashimoto

    Biological and Pharmaceutical Bulletin   28 ( 1 )   114 - 119   2005.1

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    DOI: 10.1248/bpb.28.114

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  • 小腸におけるCYP3A4発現調節活性の個体間変動因子の解明

    合葉哲也

    中冨健康科学振興財団第16回研究助成事業集   2005

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  • Caco-2細胞を用いた小腸の薬物吸収障壁機能の解析:ジゴキシン経細胞輸送と薬物相互作用メカニズムの速度論的評価

    合葉哲也, 田口雅登, 橋本征也

    臨床薬学の進歩   2005

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  • ビタミンD受容体によるCYP3A4発現誘導と生体防御のメカニズム

    合葉 哲也

    ファルマシア   39 ( 5 )   454 - 455   2003.5

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  • The increased intestinal absorption rate is responsible for the reduced hepatic first-pass extraction of propranolol in rats with cisplatin-induced renal dysfunction Reviewed

    H Okabe, A Mizukami, M Taguchi, T Aiba, M Yasuhara, Y Hashimoto

    JOURNAL OF PHARMACY AND PHARMACOLOGY   55 ( 4 )   479 - 486   2003.4

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    DOI: 10.1211/002235702982

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  • フェニトインの投与設計におけるCYP2C9と2C19遺伝子診断の有用性評価

    内堀 美和子, 田口 雅登, 合葉 哲也, 橋本 征也, 本郷 和久, 八木 信一, 宮脇 利男

    臨床薬理   34 ( 1 )   31S - 32S   2003.1

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    DOI: 10.3999/jscpt.34.31S

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  • Effect of experimental renal dysfunction on bioavailability of ajmaline in rats Reviewed

    Hashimoto Y, Aiba T, Yasuhara M, Hori R

    Journal of Pharmacy and Pharmacology   53 ( 6 )   805 - 813   2001.6

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  • Single dose pharmacokinetics and pharmacodynamics of oxazepam in normal and renal dysfunction rats Reviewed

    Kalpana Srivastava, Tomomi Hatanaka, Tetsuya Aiba, Kazunori Katayama, Tamotsu Koizumi

    Biological and Pharmaceutical Bulletin   22 ( 6 )   627 - 632   1999

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    DOI: 10.1248/bpb.22.627

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  • Effect of dosage form on stereoisomeric inversion of ibuprofen in volunteers Reviewed

    Tetsuya Aiba, Mary M. Tse, Emil T. Lin, Tamotsu Koizumi

    Biological and Pharmaceutical Bulletin   22 ( 6 )   616 - 622   1999

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    DOI: 10.1248/bpb.22.616

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  • Application of a non-linear dispersion model to analysis of the renal handling of p-aminohippurate in isolated perfused rat kidney Reviewed

    Tetsuya Aiba, Shin Kubota, Tamotsu Koizumi

    Biological and Pharmaceutical Bulletin   22 ( 6 )   633 - 641   1999

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    DOI: 10.1248/bpb.22.633

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  • Influence of pH on skin permeation of amino acids

    Tomomi Hatanaka, Toshihiko Kamon, Chisato Uozumi, Setsuko Morigaki, Tetsuya Aiba, Kazunori Katayama, Tamotsu Koizumi

    Journal of Pharmacy and Pharmacology   48 ( 7 )   675 - 679   1996

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    DOI: 10.1111/j.2042-7158.1996.tb03949.x

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  • A study of the hydrophilic cellulose matrix: Effect of drugs on swelling properties

    Suwannee P. Panomsuk, Tomomi Hatanaka, Tetsuya Aiba, Kazunori Katayama, Tamotsu Koizumi

    Chemical and Pharmaceutical Bulletin   44 ( 5 )   1039 - 1042   1996

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    DOI: 10.1248/cpb.44.1039

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  • A study of the hydrophilic cellulose matrix: Effect of indomethacin and a water-soluble additive on swelling properties

    Suwannee P. Panomsuk, Tomomi Hatanaka, Tetsuya Aiba, Kazunori Katayama, Tamotsu Koizumi

    International Journal of Pharmaceutics   126 ( 1-2 )   147 - 153   1995.12

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    DOI: 10.1016/0378-5173(95)04113-3

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  • Effect of pH on the skin permeability of a zwitterionic drug, cephalexin

    Tomomi Hatanaka, Setsuko Morigaki, Tetsuya Aiba, Kazunori Katayama, Tamotsu Koizumi

    International Journal of Pharmaceutics   125 ( 2 )   195 - 203   1995.10

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    DOI: 10.1016/0378-5173(95)00113-W

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  • Effects of probenecid and cimetidine on the renal excretion of 3’-azido-3’-deoxy-thymidine in rats Reviewed

    Aiba T, Sakurai Y, Tsukada S, Koizumi T

    Journal of Pharmacology and Experimental Therapeutics, 272(1): 94-99   272 ( 1 )   94 - 99   1995.1

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  • A Study of the Hydrophilic Cellulose Matrix: Effect of Indomethacin and a Water-Soluble Additive on Release Mechanisms

    Suwannee P. Panomsuk, Tomomi Hatanaka, Tetsuya Aiba, Kazunori Katayama, Tamotsu Koizum

    Chemical and Pharmaceutical Bulletin   43 ( 6 )   994 - 999   1995

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    DOI: 10.1248/cpb.43.994

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  • Kinetic analysis of neuromuscular blockade I: Relationship between twitch depression and stimulation frequency after d-tubocurarine administration Reviewed

    Tajima T, Kaneko K, Hatanaka T, Aiba T, Katayama K, Koizumi T

    Biological and Pharmaceutical Bulletin   17 ( 8 )   1083 - 1088   1994.8

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    The degree of twitch depression induced by nondepolarizing neuromuscular blocking drugs is known to be dependent on the stimulation frequency employed. Train-of-four (TOF) stimulations with different frequencies (0.67, 1.33 and 2.0Hz) were delivered to a sciatic nerve of a rat and series of four twitch heights of a tibialis anterior muscle were measured after d-tubocurarine (d-TC) administration. With a decrease of stimulus interval, twitch heights were intensely depressed. We hypothesized that the oservations are due to the changes of released amount of neuromuscular transmitter, acetylcholine, dependent on stimulus interval, and a pharmacokinetic/pharmacodynamic model based on the hypothesis was proposed. The model allowed simultaneous fitting of the twitch height depression after d-TC administration. It also could give a rationale to the fact that TOF stimulation at 2.0 Hz is a more sensitive monitoring method of neuromuscular function than single twitch stimulation (0.1-0.2 Hz).

    DOI: 10.1248/bpb.17.1083

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  • Kinetic analysis of neuromuscular blockade II: Train-of-four fade induced by d-tubocurarine and α-bungarotoxin Reviewed

    Tajima T, Kato Y, Hatanaka T, Aiba T, Katayama K, Koizumi T

    Biological and Pharmaceutical Bulletin   17 ( 8 )   1089 - 1093   1994.8

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    The degree of train-of-four (TOF) fade, i.e., the reduction of the fourth to the first twitch height in a train, induced by d-tubocurarine (d-TC) and α-bungarotoxin (α-BX) was investigated. The fade induced by d-TC was pronounced in comparison with that by α-BX, and the difference was analyzed using a kinetic model. Based on the assumptions : (1) Acetylcholine (ACh) binds to the nicotinic receptor and evokes twitch response. (2) The amount of released ACh is dependent on stimulus interval. (3) d-TC interacts competitively with the receptor. (4) α-BX interacts irreversibly with the receptor. It was suggested that the fade by d-TC and α-BX can be explained by the difference of the receptor occupancy by ACh which was caused by different interaction mechanisms of the two muscle relaxants with receptors.

    DOI: 10.1248/bpb.17.1089

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  • Renal handling of tobramycin in the isolated perfused rat kidney Reviewed

    Tetsuya Aiba, Yoshie Itoga, Hiromasa Shimizu, Yusuke Tanigawara, Ryohei Hori

    Journal of Pharmaceutical Sciences   83 ( 5 )   723 - 726   1994

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    DOI: 10.1002/jps.2600830526

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  • Role of p-glycoprotein in renal tubular secretion of digoxin in the isolated perfused rat kidney Reviewed

    Hori R, Okamura N, Aiba T, Tanigawara Y

    Journal of Pharmacology and Experimental Therapeutics   266 ( 3 )   1620 - 16258520/   1993.3

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  • Effect of l-mentol on the permeation of indomethacin, mannitol and cortisone through excised hairless mouse skin Reviewed

    Katayama K, Takahashi O, Matsui R, Morigaki S, Aiba T, Kakemi M, Koizumi T

    Chemical and Pharmaceutical Bulletin   40 ( 11 )   3097 - 3099   1992.1

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    The effect of l-menthol on the skin permeability of mannitol, cortisone or indomethacin was examined by an in vitro penetration technique with hairless mouse skin. The donor solution was prepared with phosphate buffered saline, ethanol : buffered saline (20 : 80,v/v) or ethanol : buffered saline (20 : 80,v/v) containing 1% (w/v) l-menthol. Although ethanol showed little enhancing effect, l-menthol in an aqueous ethanol vehicle at pH 7.4 increased the permeability coefficients of mannitol and indomethacin by about 100 times that of the control (an aqueous vehicle) and increased that of cortisone by about 10 times. l-Menthol, however, scarcely enhanced the penetration of indomethacin at pH 3.0,the majority of the species being in unionized form. These results suggested that the menthol-ethanol-aqueous system enhanced skin permeability through a direct effect on the polar and/or lipid pathways, while the thermodynamic activity of the penetrant molecule in the delivery vehicle might also influence the effectiveness of the penetration enhancer.

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  • Moment analysis of drug disposition in kidney. III: Transport of p‐aminohippurate and tetraethylammonium in the perfused kidney isolated from uranyl nitrate‐induced acute renal failure rats Reviewed

    Yusuke Tanigawara, Yoshihiro Saito, Tetsuya Aiba, Kou Ohoka, Akira Kamiya, Ryohei Hori

    Journal of Pharmaceutical Sciences   79 ( 3 )   249 - 256   1990

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    DOI: 10.1002/jps.2600790315

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  • Moment analysis of drug disposition in kidney. II: Urine pH‐dependent tubular secretion of tetraethylammonium in the isolated perfused rat kidney Reviewed

    Akira Kamiya, Yusuke Tanigawara, Yoshihiro Saito, Yoshie Hayashi, Tetsuya Aiba, Ken‐Ichi Inui, Ryohei Hori

    Journal of Pharmaceutical Sciences   79 ( 8 )   692 - 697   1990

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    DOI: 10.1002/jps.2600790809

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  • Moment analysis of drug disposition in kidney: Transcellular transport kinetics of p‐Aminohippurate in the Isolated Perfused Rat Kidney Reviewed

    Ryohei Hori, Yusuke Tanigawara, Yoshihiro Saito, Yoshie Hayashi, Tetsuya Aiba, Katsuhiko Okumura, Akira Kamiya

    Journal of Pharmaceutical Sciences   77 ( 6 )   471 - 476   1988

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    DOI: 10.1002/jps.2600770602

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Books

  • 個別化医療を目指した臨床薬物動態学1-基礎編(共著)

    廣川書店  2016  ( ISBN:9784567484909

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  • P-0931 L-HPC含水ゲルシートの湿潤療法用被覆型外用基剤としての製剤的特性(一般演題 ポスター発表,褥そう対策,Enjoy Pharmacists' Lifestyles)

    森 泰裕, 小川 敦, 高橋 舞, 森山 総一郎, 上原 麻未, 中山 祥江, 合葉 哲也, 黒崎 勇二

    日本医療薬学会年会講演要旨集   21   337 - 337   2011.9

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  • P-0839 腹腔内-全身循環血間の薬物移行動態に及ぼす脂肪乳剤の影響 : 腹腔内投与時の移行動態(一般演題 ポスター発表,薬物病態(基礎),Enjoy Pharmacists' Lifestyles)

    高畑 友紀子, 堀内 瑞樹, 森山 総一郎, 合葉 哲也, 黒崎 勇二

    日本医療薬学会年会講演要旨集   21   321 - 321   2011.9

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  • てんかん症例犬のゾニサミド血中濃度に影響を与える体重,犬種および併用薬の有無に関する検討

    福永航也, 合葉哲也, 齋藤弥代子, 武藤眞, 渡辺直之, 内田恵子, 奥野征一, 小林孝之, 折戸謙介

    日本獣医学会学術集会講演要旨集   152nd   2011

  • P1-250 キトサンによるアシクロビルの消化管吸収促進に関する検討(一般演題 ポスター発表,薬物動態・TDM・投与設計,臨床から学び臨床へと還元する医療薬学)

    舛田 あゆみ, 後藤 祐子, 合葉 哲也, 黒崎 勇二

    日本医療薬学会年会講演要旨集   20   328 - 328   2010.10

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  • P2-271 アルベカシンの血中濃度モニタリングにおける腎機能マーカーシスタチンCの有用性評価(一般演題 ポスター発表,薬物動態(臨床、TDM),医療薬学の創る未来 科学と臨床の融合)

    合葉 哲也, 田中 亮裕, 大塚 尚, 川崎 博己, 黒崎 勇二, 井上 智喜, 末丸 克矢, 荒木 博陽

    日本医療薬学会年会講演要旨集   19   432 - 432   2009.9

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  • 20-P3-472 急性腎不全に伴うリチウムの脳脊髄液移行性の変動に対する性差の影響(薬物動態(基礎),来るべき時代への道を拓く)

    坂江 利恵, 石川 温子, 小林 浩二, 二宗 朋子, 合葉 哲也, 川崎 博己, 黒崎 勇二

    日本医療薬学会年会講演要旨集   18   358 - 358   2008.9

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  • 21I-11 実験的急性腎不全ラットにおける塩基性薬物キニジンの体内動態の変動(薬物動態(基礎・臨床・遺伝子多型),来るべき時代への道を拓く)

    出羽 祐基, 草場 潤一, 石川 七瀬, 合葉 哲也, 川崎 博己, 黒崎 勇二

    日本医療薬学会年会講演要旨集   18   280 - 280   2008.9

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  • 作用発現動態の速度論的解析に基づく作用機構の考察:カルシウム拮抗薬による血管弛緩反応

    清水 けい子, 正岡 康幸, 小森 有希子, 合葉 哲也, 見尾 光庸, 川崎 博己, 黒崎 勇二

    日本薬理学雑誌   132 ( 3 )   18P - 18P   2008.9

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  • 光に不安定な薬剤の簡易懸濁法を用いた経管投与方法について

    座間味 義人, 槙田 崇志, 安藤 哲信, 倉田 なおみ, 合葉 哲也, 黒崎 勇二, 北村 佳久, 千堂 年昭, 高山 房子, 川崎 博己, 五味田 裕

    日本薬学会年会要旨集   128年会 ( 4 )   220 - 220   2008.3

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  • 薬物の腸管吸収におけるバニロイド受容体による生理的制御

    小森 有希子, 片岡 誠, 山下 伸二, 川崎 博己, 合葉 哲也, 黒崎 勇二

    薬剤学 = Journal of Pharmaceutical Science and Technology, Japan   67   320 - 320   2007.5

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  • 薬効動態のモーメント解析に基づく作用機構の考察 NOを介した血管弛緩反応

    正岡 康幸, 小森 有希子, 合葉 哲也, 高取 真吾, 見尾 光庸, 川崎 博己, 黒崎 勇二

    日本薬理学雑誌   129 ( 2 )   23P - 23P   2007.2

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  • シスプラチン誘発腎障害ラットにおけるプロプラノロールのバイオアベイラビリティと肝代謝活性

    田口 雅登, 水上 亜紀子, 岡部 裕美, 合葉 哲也, 橋本 征也

    薬物動態 = Xenobiotic metabolism and disposition   16   S195   2001.9

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Presentations

  • Altered hypoglycemic property of nateglinide in rats under acute inflammatory conditions

    2022.3.27 

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    Event date: 2022.3.26 - 2022.3.28

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  • A pharmacodynamic factor potentiating the cerebral pharmacological activity of phenobarbital in rats

    2022.3.27 

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    Event date: 2022.3.26 - 2022.3.28

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  • Effects of culture conditions on CYP3A4 and MDR1 mRNA induction by 1a,25- dihydroxyvitamin D3 in human intestinal cell lines, Caco-2 and LS180.

    Aiba T, Susa M, Fukumori S, Hashimoto Y

    Drug Metabolism Reviews  2005 

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  • Contribution of the first pass intestinal elimination to low bioavailability of lidocaine in rats

    Aiba T, Kimura M, Nishina K, Koizumi T

    Millennial World Congress of Pharmaceutical Sciences  2000.4 

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    Event date: 2000.4

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  • Characterization of steveoisomeric inversion of ibaprofen and fenoprofer in rat liver microsomes.

    Aiba T, Tse MM, Lin ET, Koizumi T

    American Association of Pharmaceutical Scientists Annual Meeting and Exposition  1998.11 

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    Event date: 1998.11

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  • Mean residence time in organs in toxicokinetic studies

    Tanigawara Y, He Y-L, Aiba T, Yasuhara M, Hori R, Hirouchi Y, Nakagawa H, Kawahara Y, Okada R

    Journal of Pharmacobio-Dynamics  1990.2 

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  • 脳由来神経栄養因子受容体が関与する抗てんかん薬の薬効変動

    小林優, 青江知佳, 竹中美沙, 合葉哲也

    日本薬学会第144年会  2024.3.30 

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  • 神経栄養因子受容体TrkBを介する抗てんかん薬レベチラセタムのin vivo作用増強

    青江知佳, 小林優, 竹中美沙, 合葉哲也

    日本薬学会第143年会  2023.3.27 

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  • ラット肝薬物代謝酵素CYP3A2のユビキチン分解に関する基礎的検討

    藤森弘貴, 本田実生, 合葉哲也

    日本薬学会第143年会  2023.3.27 

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  • 炎症病態に伴う⾎糖降下薬ナテグリニドの薬効変動の解析

    ⻄脇あかね、床治佳、神志那萌⼦、松本和也、合葉哲也

    日本薬学会 第140年会  2020.3 

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  • 急性腎不全に伴うフェノバルビタールの中枢抑制作⽤の薬⼒学的変動機構

    松本和也, 鈴木啓一郎, 西脇あかね, 合葉哲也

    日本薬学会 第140年会  2020.3 

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  • 急性腎不全ラットにおける中枢神経系抑制薬の薬効増強メカニズムの検討

    松本和也, 鈴木啓一郎, 合葉哲也

    第58回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2019.11.9 

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  • 急性組織炎症病態における糖尿病治療薬ナテグリニドの体内動態と薬効解析

    神志那萌子, 西脇あかね, 鈴木啓一郎, 藤本和貴, 合葉哲也

    第28回日本医療薬学会年会  2018.11.24 

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  • 中枢神経抑制薬の麻酔作用に及ぼす末梢組織炎症の影響

    鈴木啓一郎, 岡田淳芳, 原啓介, 松本和也, 神志那萌子, 合葉哲也

    第28回日本医療薬学会年会  2018.11.23 

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  • 急性腎不全に伴う中枢神経系の薬物感受性の変動と電解質平衡調節機構の変動

    日本薬学会第138年会  2018 

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  • 急性局所炎症モデルラットにおける糖尿病治療薬ナテグリニドの体内動態の変動メカニズム

    日本薬学会第138年会  2018 

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  • 急性腎不全モデルラットにおけるフェノバルビタールの薬効変動機構の解明

    日本薬学会第137年会  2017 

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  • ビタミン剤の配合成分量に基づく類似性解析

    日本薬学会第137年会  2017 

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  • 一般向け消炎鎮痛貼付製剤の俯瞰的特性評価

    日本薬学会第137年会  2017 

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  • バルプロ酸のTDMとその応用

    日本TDM学会第47回セミナー  2016 

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  • 急性腎不全ラットにおける中枢神経系作用薬の薬効変動メカニズム

    第55回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2016 

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  • 一般用医薬品の消炎鎮貼付剤の類似性評価

    第55回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2016 

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  • An increased hepatic drug metabolizing activity accompanied with experimentally induced lung impairment and hypoxemia in rats

    第30回日本薬物動態学会  2015 

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  • 急性腎不全ラットにおける肝臓の薬物代謝酵素の発現調節機構の変調

    日本薬学会第135年会  2015 

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  • Alteration of the pharmacological effects of the CNS-acting compounds in rats with acute renal failure

    第30回日本薬物動態学会  2015 

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  • Acute renal failure alters the induced mRNA expression of hepatic CYP3A subfamily in rats

    19th North American ISSX / 29th JSSX Joint Meeting  2014 

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  • Altered hepatic drug metabolizing activity in rats with acute lung impairment

    第19回北米薬物動態学会・第29回日本薬物動態学会合同年会  2014 

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  • Acute renal failure alters the induced mRNA expression of hepatic CYP3A subfamily in rats

    第19回北米薬物動態学会・第29回日本薬物動態学会合同年会  2014 

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  • ラット肝薬物代謝酵素の発現誘導に及ぼす急性腎不全の影響

    第53回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2014 

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  • Altered pharmacological potency of the CNS-acting compounds in rats with acute renal failure

    第19回北米薬物動態学会・第29回日本薬物動態学会合同年会  2014 

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  • 急性肺機能障害ラットにおける肝薬物代謝の活性変動

    日本薬学会第134年会  2014 

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  • 急性腎不全ラットにおける中枢神経系作用薬の薬効変動機構

    日本薬学会第134年会  2014 

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  • Altered pharmacological potency of the CNS-acting compounds in rats with acute renal failure

    19th North American ISSX / 29th JSSX Joint Meeting  2014 

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  • Altered hepatic drug metabolizing activity in rats with acute lung impairment

    19th North American ISSX / 29th JSSX Joint Meeting  2014 

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  • Evaluation of the pharmacodynamics of CNS-acting compounds in rats with acute renal failure

    2013 

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  • 遊離形薬物濃度モニタに基づく筋肉内局所利用率の評価:局所冷却時の in vivo 拡散モデルによる数理的解析

    日本薬剤学会第28年会  2013 

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  • 急性局所炎症に伴う薬物肝代謝活性の変動メカニズムの検討

    日本薬学会第133年会  2013 

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  • 肝ラット肝薬物代謝活性に及ぼす肺障害の影響

    第52回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2013 

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  • 双極性障害患者に対するラモトリギンの使用実態調査と考察

    第23回日本医療薬学会年会  2013 

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  • Effects of lung impairment on the hepatic drug metabolizing activity in rats

    第28回日本薬物動態学会年会  2013 

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  • Evaluation of the pharmacodynamics of CNS-acting compounds in rats with acute renal failure

    第28回日本薬物動態学会年会  2013 

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  • Effects of lung impairment on the hepatic drug metabolizing activity in rats

    2013 

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  • Effects of acute local inflammation on the hepatic expressions of CYP3A subfamily in rats

    2012 

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  • Effect of intraperitoneal lipid emulsions on plasma-to-peritoneal transfer of lipophilic drugs in rats

    2012 

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  • 新規RXRアゴニスト及びその類縁化合物のヒト肝における代謝特性の予測

    日本薬学会第132年会  2012 

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  • Evaluation of dynamic diffusion process for developing focally acting DDSs: Improvement of focal bioavailability by topical cooling

    2012 

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  • Microdialysis 法を用いた薬物の筋肉内局所動態評価:局所冷却による局所薬物利用率の増大

    第28回日本DDS学会学術集会  2012 

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  • 湿潤療法用被覆型外用基剤としてのL-HPC含水ゲルシートの製剤的特性評価

    日本薬剤学会第27年会  2012 

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  • ラット肝CYP3A代謝活性に及ぼす急性局所炎症の影響

    第51回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2012 

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  • JPALS/CL6ジェネラリストに期待すること

    第45回日本薬剤師会学術大会  2012 

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  • Effect of intraperitoneal lipid emulsions on plasma-to-peritoneal transfer of lipophilic drugs in rats

    第27回日本薬物動態学会年会  2012 

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  • 腹腔内に注入した脂肪乳剤が血漿中及び腹腔内薬物動態に及ぼす影響:脂溶性の異なる薬物での比較検討

    第51回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2012 

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  • Evaluation of dynamic diffusion process for developing focally acting DDSs: Improvement of focal bioavailability by topical cooling

    第6回次世代を担う若手医療薬科学シンポジウム  2012 

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  • Effects of acute local inflammation on the hepatic expressions of CYP3A subfamily in rats

    第27回日本薬物動態学会年会  2012 

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  • ラットにおけるキトサンを用いた難吸収性抗ウイルス薬の消化管吸収改善

    日本薬剤学会第27年会  2012 

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  • ラット脳脊髄液の電解質平衡調節機構に及ぼす急性炎症の影響

    日本薬学会第132年会  2012 

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  • 脂肪乳剤微小透析法(Lipo-MD法)による親油性薬物の局所動態モニタ特性の改善

    日本薬剤学会第27年会  2012 

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  • ベットサイドの臨床薬理-移植と免疫抑制剤

    第33回日本臨床薬理学会学術総会  2012 

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  • Effect of acute inflammation on lithium disposition to cerebrospinal fluid in rats

    2011 

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  • Metabolic properties of novel retinoid X receptor agonists possessing various side chain structures in liver microsomes

    2011 

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  • ラットにおける薬物肝代謝酵素の発現に及ぼす急性腎不全の影響

    日本薬学会第131年会  2011 

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  • Studies on the biopharmaceutical characteristics of novel PPAR pan-agonist, TIPP-703, and its pharmaceutical modification to improve intestinal absorption

    2011 

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  • 薬物の筋肉内拡散・ 分布動態に及ぼす血流量の影響:局所冷却時の動態特性

    日本薬剤学会第26年会  2011 

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  • ラットにおけるキトサンのアシクロビル消化管吸収促進機構の検討

    日本薬学会第131年会  2011 

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  • Effect of acute inflammation on lithium disposition to cerebrospinal fluid in rats

    第26回日本薬物動態学会年会  2011 

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  • 肺移植患者におけるシクロスポリン経口クリアランスに及ぼす移植後経過日数の影響

    第32回日本臨床薬理学会年会  2011 

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  • Studies on the biopharmaceutical characteristics of novel PPAR pan-agonist, TIPP-703, and its pharmaceutical modification to improve intestinal absorption

    第26回日本薬物動態学会年会  2011 

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  • 新規骨格を有するRXRアゴニストの側鎖構造と肝代謝活性の相関解析

    第50回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2011 

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  • 肺移植患者におけるタクロリムス血中濃度推移の母集団解析

    第28回日本TDM学会・学術大会  2011 

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  • Metabolic properties of novel retinoid X receptor agonists possessing various side chain structures in liver microsomes

    第26回日本薬物動態学会年会  2011 

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  • 急性炎症に伴う電解質の脳脊髄液移行特性の変動評価

    第50回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2011 

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  • 脂肪乳剤を用いた腹膜透析が脂溶性薬物の血漿中濃度推移に及ぼす影響

    第49回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2010 

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  • In vivoにおけるキトサンのアシクロビル吸収促進機構の検討

    第49回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2010 

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  • ラットにおける薬物肝代謝活性に及ぼす急性腎不全の影響

    第49回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2010 

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  • 脂肪乳剤を用いた微小透析法(Lipo-MD法):薬物の脂溶性が透析特性に及ぼす影響

    第49回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2010 

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  • キトサンによるアシクロビルの消化管吸収促進に関する検討

    第20回日本医療薬学会年会  2010 

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  • Microdialysis study in evaluation of intramuscular lateral distribution profiles of topically administered drugs in rats

    2010 

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  • In vivo における難吸収性抗ウイルス薬のバイオアベイラビリティ改善の試み

    日本薬剤学会第25年会  2010 

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  • 小児におけるテイコプラニンの母集団薬物動態解析 -血中濃度に及ぼす基礎疾患の影響-

    第27回日本TDM学会・学術大会  2010 

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  • L-HPC 含水ゲルシートの調整と被覆型外用基剤としての製剤学的特性評価

    日本薬剤学会第25年会  2010 

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  • Altered drug metabolizing activity of hepatic CYP3A subfamily in rats with acute renal failure

    第25回日本薬物動態学会年会  2010 

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  • Microdialysis study in evaluation of intramuscular lateral distribution profiles of topically administered drugs in rats

    第25回日本薬物動態学会年会  2010 

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  • 簡易懸濁用容器「けんだくん」を用いた光に不安定な薬剤の含量減少の抑制について

    日本薬学会第130年会  2010 

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  • Altered drug metabolizing activity of hepatic CYP3A subfamily in rats with acute renal failure

    2010 

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  • 血管平滑筋弛緩作用の薬力学モデル解析

    日本薬学会第130年会  2010 

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  • 急性腎不全ラットにおける薬物肝代謝活性の変動評価

    日本薬学会第130年会  2010 

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  • 脈絡叢におけるCSF電解質濃度の調節機構の in vivo 評価

    日本薬学会第130年会  2010 

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  • 新規骨格を有するRXRアゴニストの体内動態に関する基礎的検討

    日本薬学会第130年会  2010 

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  • Pharmacokinetic characterization of novel retinoid X receptor agonists in rats

    第24回日本薬物動態学会年会  2009 

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  • Functional investigation of mechanisms responsible for lithium disposition to cerebrospinal fluid in rats

    第24回日本薬物動態学会年会  2009 

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  • 乳児を対象としたバルプロ酸血中遊離型濃度の母集団解析

    第30回日本臨床薬理学会年会  2009 

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  • ヨード造影剤との相互作用を有する薬剤に対するリスクマネージメント

    第19回日本医療薬学会年会  2009 

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  • MRSA感染症患者における塩酸バンコマイシン注射剤の腎毒性発現状況―ブランド医薬品とジェネリック医薬品の比較検討―

    第26回中国地区インフェクションフォーラム  2009 

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  • 新規レキシノイドのラットにおける体内動態特性の比較

    第48回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2009 

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  • アルベカシンの血中濃度モニタリングにおける腎機能マーカーシスタチンCの有用性評価

    第19回日本医療薬学会年会  2009 

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  • 脂肪乳剤を用いた微小透析法(Lipo- MD法)の透析特性:濃度変化に対する追随性の従来法との比較

    第48回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2009 

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  • 脈絡叢におけるリチウム輸送機構の in vivo 解析

    第48回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2009 

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  • Individualized dosage adjustment of valproic acid based on the prediction of its unbound serum concentration in epileptic infants

    第3回次世代を担う若手医療薬科学シンポジウム  2009 

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  • 急性腎不全における抗精神病薬リチウムの脳脊髄液移行動態に及ぼす性差の影響

    日本薬学会第129年会  2009 

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  • 乳児を対象としたバルプロ酸血中遊離型濃度の高精度推定式の構築

    第26回日本TDM学会・学術大会  2009 

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  • 脂肪乳剤を用いたマイクロダイアリシス法(Lipo-MD法)の局所薬物動態評価への応用

    日本薬剤学会第24年会  2009 

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  • Individualized dosage adjustment of valproic acid based on the prediction of its unbound serum concentration in epileptic infants

    2009 

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  • 118. Pharmacokinetic characterization of novel retinoid X receptor agonists in rats

    2009 

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  • Functional investigation of mechanisms responsible for lithium disposition to cerebrospinal fluid in rats

    2009 

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  • 新規レチノイドX受容体アゴニストNEt-3IPのラットにおける体内動態評価

    日本薬学会第129年会  2009 

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  • Individual dosage adjustment of valproic acid based on unbound serum concentration in intractable epileptic children.

    第2回次世代を担う若手医療薬科学シンポジウム  2008 

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  • シスタチンCによる腎機能評価に基づくバンコマイシン血中濃度推移の母集団解析

    第47回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2008 

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  • 実験的急性腎不全ラットにおける肝代謝型塩基性薬物キニジンの体内動態変動因子の検討

    第47回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2008 

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  • 急性腎不全ラットにおけるリチウムの脳脊髄液移行動態の変動機構の検討

    第47回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2008 

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  • 微小透析法を用いた薬物の局所動態評価:フェニレフリンの筋肉内拡散動態と局所血流変化

    第47回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2008 

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  • ケトプロフェン貼付剤適用時の光分解物の生成に及ぼす抗酸化物質の効果

    第47回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2008 

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  • 塩酸バンコマイシンの先発医薬品と後発医薬品における腎障害発現状況の比較検討

    日本薬学会第128年会  2008 

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  • Choroid plexusにおける脳脊髄液の恒常性維持機構に及ぼす急性腎不全の影響

    日本薬学会第128年会  2008 

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  • 微小透析を用いた薬物の筋肉組織内拡散過程の評価

    日本薬剤学会第23年会  2008 

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  • 光に不安定な薬剤の簡易懸濁法を用いた経管投与方法について

    日本薬学会第128年会  2008 

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  • 作用発現動態の速度論的解析に基づく作用機構の考察:カルシウム拮抗薬による血管弛緩反応

    第113回日本薬理学会近畿部会  2008 

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  • 急性腎不全ラットにおける塩基性薬物キニジンの体内動態の変動

    第18回日本医療薬学会年会  2008 

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  • 乳幼児の発育に伴う遊離形バルプロ酸濃度の変動性評価

    第79回岡山小児てんかん懇話会  2008 

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  • 生涯学習の評価とは

    第41回日本薬剤師会学術大会  2008 

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  • 急性腎不全に伴うリチウムの脳脊髄液移行性の変動に対する性差の影響

    第18回日本医療薬学会年会  2008 

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  • 難治性ネフローゼ症候群患者におけるシクロスポリン血中濃度推移の母集団解析

    第47回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2008 

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  • Suppressing effect of antioxidants on the photodegradation of transdermally applied ketoprofen with UV-exposure

    第23回日本薬物動態学会年会  2008 

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  • シスプラチン投与時における水分負荷と腎障害発現頻度の実態調査

    第16回クリニカルファーマシー・シンポジウム  2008 

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  • ロバスト回帰を用いる難治性ネフローゼ患者におけるシクロスポリンのAUC 推定方法に関する検討

    第25回日本TDM学会・学術大会  2008 

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  • 岡山大学薬学部におけるPBL導入の現状と6年制に向けての課題

    第16回クリニカルファーマシー・シンポジウム  2008 

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  • 大学病院における緩和ケア〜緩和ケアチームでの薬剤師の役割〜

    第16回クリニカルファーマシー・シンポジウム  2008 

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  • 抗躁薬リチウムの脳脊髄液移行性におよぼす腎不全の影響

    日本薬学会第127年会  2007 

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  • 乳幼児における血中遊離形パルプロ酸濃度の遡及的解析

    第28回日本臨床薬理学会年会  2007 

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  • 低置換度ヒドロキシプロピルセルロース(L-HPC)含水ゲルシートの調製と外用基剤としての特性評価

    第46回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会  2007 

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  • 脈絡叢の電解質輸送機構に及ぼす腎不全の影響

    第46回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会  2007 

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  • 各種L型Ca拮抗薬による血管弛緩作用動態の速度論的解析

    第46回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会  2007 

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  • 経皮吸収型ケトプロフェン製剤適用時の光分解物の生成に及ぼすアスコルビン酸誘導体の効果

    第46回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会  2007 

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  • 薬物の腸管吸収におけるバニロイド受容体による生理的制御

    日本薬剤学会第22年会  2007 

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  • Involvement of vanilloid receptor, TRPV1, in the physiological control of intestinal drug absorption in rats.

    3rd Pharmaceutical Sciences World Congress, Amsterdam, Netherlands  2007 

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  • てんかん患児における遊離型バルプロ酸濃度に及ぼす併用薬の影響

    第77回岡山小児てんかん懇話会  2007 

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  • てんかん患児における遊離形バルプロ酸濃度に及ぼす併用薬の影響

    第24回日本TDM学会・学術大会  2007 

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  • 職場の「余剰薬剤師」とならないために

    第40回日本薬剤師会学術大会  2007 

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  • 実務実習モデル・コアカリキュラムのトライアル(第5報)-多施設での実習時における学生の学習意欲向上のための教員の関与-

    第17回日本医療薬学会年会  2007 

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  • 乳幼児の発育に伴う血中遊離形バルプロ酸濃度の変動評価

    第46回日本薬学会・日本薬剤師会・日本病院薬剤師会中国四国支部学術大会  2007 

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  • Evaluation of diffusion controlled vesicle (DCV) system for oral extended release by the in-vivo dissolution behavior and the resulting pharmacokinetic profiles.

    8th International ISSX Meeting  2007 

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  • バルプロ酸血中濃度と併用薬、臨床検査値との関連性

    第74回岡山小児てんかん懇話会  2006 

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  • トルブタミドの腹膜透析性に及ぼすサルファ剤の影響

    第45回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2006 

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  • 光に不安定な薬剤の簡易懸濁法を用いた投与法について

    第16回日本医療薬学会年会  2006 

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  • バニロイド受容体刺激が消化管からの薬物吸収に及ぼす影響(Ⅱ)

    第45回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2006 

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  • マイクロダイアリシス法による抗躁薬リチウムの脳移行動態とその変動性の解析

    第45回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2006 

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  • 先発医薬品と後発医薬品のin vitro溶出動態の比較:塩酸ジルチアゼム製剤

    第45回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2006 

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  • Ketoprofenの皮膚内局所動態に及ぼす光照射の影響:微小透析法による検討

    第45回日本薬学会・日本病院薬剤師会中国四国支部学術大会  2006 

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  • Effect of sulfonamides on pharmacokinetics of tolbutamide in rats receiving peritoneal dialysis

    第21回日本薬物動態学会年会  2006 

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  • 薬効動態のモーメント解析に基づく作用機構の考察:NOを介した血管弛緩反応

    第110回日本薬理学会近畿支部会  2006 

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  • バルプロ酸TDMデータの遡及的解析

    第16回日本医療薬学会年会  2006 

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  • ソフトカプセル剤の剤形変更後の血漿中薬物濃度推移予測の試み

    日本薬剤学会第21年会  2006 

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  • 微小透析法を用いた筋肉内における薬物拡散過程に関する研究

    日本薬剤学会第21年会  2006 

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  • Comparison of in vitro dissolution profiles of generic diltiazem formulations with innovator ones aimed to develop an in vitro–in vivo correlation (IVIVC)

    第21回日本薬物動態学会年会  2006 

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  • Effect of UV-irradiation on dermal pharmacokinetics of ketoprofen and its photoproducts in guinea pigs

    第21回日本薬物動態学会年会  2006 

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  • Caco-2細胞におけるジゴキシン経細胞輸送の速度論的解析

    日本薬学会北陸支部第112回例会  2005 

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  • Rational clinical use for DDSs: Effects of dilution of Lipo-PEG1 injection with aqueous infusions on its therapeutic aspect in rats.

    13th NA ISSX / 20th JSSX Joint Meeting  2005 

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  • Effects of culture conditions on CYP3A4 and MDR1 mRNA induction by 1a,25-dihydroxyvitamin D3 in human intestinal cell lines, Caco-2 and LS180.

    13th NA ISSX / 20th JSSX Joint Meeting  2005 

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  • バニロイド受容体刺激が消化管からの薬物吸収に及ぼす影響

    第44回日本薬学会中四国支部学術大会  2005 

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  • A kinetic approach to bradykinin-induced vascular responses by the moment analysis.

    13th NA ISSX / 20th JSSX Joint Meeting  2005 

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  • 血管弛緩作用動態のモーメント解析に基づく作用機構の考察

    第44回日本薬学会中四国支部学術大会  2005 

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  • 微小透析法を用いた筋肉内投与された薬物の側方拡散に関する研究

    第44回日本薬学会中四国支部学術大会  2005 

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  • 薬物作用動態のモーメント解析に基づく作用機構解析の試み:血管作用薬

    第4回創薬・薬理フォーラム岡山  2005 

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Research Projects

  • Dosage individualization of antianxiety and sedative medication based on modified synaptic function of cerebral GABAergic neurons with peripheral organs failure

    Grant number:19K07220  2019.04 - 2023.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    合葉 哲也, 北村 佳久

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    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    薬物療法の個別化至適化を図る上で、薬物血中濃度の適切な管理・調節は不可欠である。これは、治療標的組織での薬物濃度が薬物血中濃度に比例し、標的組織での薬理効果が標的組織での薬物濃度に依存するからである。しかしこの基盤的認識は必ずしも正しくはない。即ち、これまでに我々が明らかにしてきたように、病態時には、治療標的組織の薬物感受性が変動する。そして、特に留意すべき点は、その病態が治療標的組織に直接関係しない場合でも、治療標的組織の感受性が変化するという事実である。したがって、薬物療法の個別化至適化を成す場合、薬物の血中濃度推移を把握するにとどまらず、作用部位における感受性変化を考慮することが必要である。本助成研究において我々は、これまでの研究経験に基づき、薬物の組織移行動態の影響を排除して、病態時の薬物作用部位の感受性変化を適切に評価可能なインビボ動物実験系である薬物の脳室内直接投与実験系を構築した。そしてこれを用いて、代表的な中枢抑制薬フェノバルビタールをモデル薬物に、腎不全ラットにおけるその中枢抑制作用を評価したところ、対照群よりも少ない投与量で抑制作用が発現し、腎不全時に中枢神経系の薬物感受性が亢進することが明らかとなった。次いで、こうした感受性亢進機構の解明に焦点をあてて検討を進めたところ、この感受性亢進機構には、フェノバルビタールの作用標的となるGABA受容体との関係は認められず、他方、神経細胞内のクロライドイオン濃度を調節する電解質輸送担体に、その発現量変化が認められた。更にこの電解質輸送担体の発現調節に関わる神経栄養因子受容体のリン酸化状態が、腎不全ラットでは変化していることも明らかとなった。これらの知見は、腎不全時に観察される中枢神経系の薬物感受性亢進機構に、神経栄養因子が関与していることを示唆するものである。

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  • Elucidation of liver mitochondrial failure and autoinflammation with RNA-epigenetics caused by nutrient stress

    Grant number:19K11692  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    TAKAYAMA Fusako

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    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    Inadequate diets (high fat and high sugar diets, overeating habit) are well known as the nutrient stress to develop metabolic syndrome related diseases including NAFLD/NASH (excessive triglyceride accumulation in hepatocytes [ectopic fat morbidity]).
    Using NAFLD/NASH model [Japanese Patent No.5109134] rats, we exhibited for the first time that changes in 1) RNA methylation degree and 2) ALKBH expression, 3) inflammasome complex formation, in hepatocytes of rats. These results had high correlations with the mitochondrial metabolism failure, oxidative stress and the NAFLD/NASH severity. According to other advance studies with cell experiments, the RNA-epigenetics with 1) and 2) have abilities to reform inflammasome complex and mitochondria function. In summary, the RNA-epigenetics responded to the nutrient stress, could link to mitochondrial disorder and chronic inflammation, the common roots to exacerbate metabolic syndrome related diseases including NAFLD/NASH.

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  • Mechanism underlying potentiated pharmacological effects of sedatives with renal failure

    Grant number:15K08097  2015.04 - 2019.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    AIBA TETSUYA

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    Grant amount:\5070000 ( Direct expense: \3900000 、 Indirect expense:\1170000 )

    Pharmacological potency of therapeutic compounds alters in patients with severe disease, in which it is known that besides the affected organ, non-affected organs that are not immediately connected with the disease respond to therapeutic compounds in an altered manner. To clarify mechanism underlying the altered response, we examined the potentiation of the pharmacological effects of sedatives in rats with experimentally induced renal failure. It was demonstrated that the cerebral expression of chloride transporter protein alters with renal failure, suggesting that cellular regulation regarding chloride concentration alters with renal failure to allow the action potential in the nerve cells to be more effectively suppressed.

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  • Dose optimization of the central nervous system acting compound considering its altered pharmacokinetics and pharmacodynamics in patients with acute renal failure

    Grant number:24590192  2012.04 - 2015.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    AIBA TETSUYA, KITAMURA Yoshihisa

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    Grant amount:\5460000 ( Direct expense: \4200000 、 Indirect expense:\1260000 )

    An increased potency of the central nervous system (CNS) acting compounds are often observed in the patients with acute renal failure (ARF), even in the case of the compounds mainly undergoing the hepatic drug metabolism. Mechanisms underlying the increased potency are investigated in this study. It was revealed that the hepatic drug metabolism is suppressed with inflammation accompanying with ARF, leading to an increased plasma concentration of the compound. In addition, it was demonstrated that the suppressive neuron function is elevated with ARF. These pharmacokinetic and pharmacodynamic factors are probably involved with the ARF-related increased potency of the CNS acting compounds.

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  • Evaluation of focal availabilities of drugs by monitoring of dynamic diffusion and clearance processes of unbound drug concentrations

    Grant number:24590193  2012.04 - 2015.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KUROSAKI Yuji, KAWASAKI Hiromu, AIBA Tetsuya

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    Grant amount:\5330000 ( Direct expense: \4100000 、 Indirect expense:\1230000 )

    To realize a well-controlled regionally confined drug action, a new scientific platform that covers topical bioavailability and topical pharmacokinetics has been required. In this study, lateral diffusion and systemic clearance processes of drugs applied to the abdominal muscle of the rat was monitored by microdialysis (MD) and a new concept, focal bioavailability, based on unbound drug concentration profiles in specific site is evaluated with its pharmacokinetic model.

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  • Understanding mechanisms underlying an increased sensitivity of central nervous system to therapeutic compounds with decreased renal function for dose optimization and individualizing treatment

    Grant number:21590159  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    AIBA Tetsuya, KUROSAKI Yuji, KAWASAKI Hiromu

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    It has been elucidated that the hepatic expression of the drug metabolizing enzyme is altered with a decreased renal function. The expression of electrolyte transporter in choroid plexus also varies when renal function is impaired. These findings suggest that an increased sensitivity of central nervous system to therapeutic compounds is caused by the increase in the drug disposition to central nervous system. The increased drug disposition seems to be a result of an altered hepatic enzyme expression in conjunction with a perturbed homeostasis of central nervous system with an altered choroid plexial expression of electrolyte transporters.

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  • Application of microdialysis techniques to evaluation system for local pharmacokinetics of topically delivered drugs guaranteeing regionally confined drug action

    Grant number:21590161  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KUROSAKI Yuji, KAWASAKI Hiromu, AIBA Tetsuya

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    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    A new drug delivery concept, which enables well-controlled regionally confined drug action, requires new scientific platform that covers topical bioavailability and topical pharmacokinetics. In this study, lateral diffusion and systemic transfer of drugs applied to the abdominal muscle of the rat was monitored by microdialysis(MD). Improved monitoring characteristics of Lipo-MD in followability of the donor concentration changes were clarified in application to lipophilic drugs.

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  • Evaluation system for local pharmacokinetics of topically delivered drugs guaranteeing regionally confined drug action

    Grant number:19590143  2007 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KUROSAKI Yuji, AWASAKI Hiromu, AIBAK Tetsuya

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    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    限局された局所にあらかじめ企画された薬物濃度推移での薬物療法を実践するための薬物投与概念として「局所送達放出制御型薬物送達システム(DDS)」の開発が想定される。このような新しい機能を有するDDS製剤の機能を特徴づけ, これを保証する科学的な評価法として, 微小透析法を駆使することで筋肉内局所に定速投与された薬物の筋肉組織内側方拡散と全身循環血への移行動態を分離評価できる実験系の構築に成功した。

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  • Mechanisms responsible for interindividual variability of bioavailability of therapeutic compounds in patients with acute renal failure and related homeostasis perturbation

    Grant number:18590141  2006 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    AIBA Tetsuya, KUROSAKI Yuji, KAWASAKI Hiromu, KOMORI Yukiko

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    Grant amount:\3830000 ( Direct expense: \3500000 、 Indirect expense:\330000 )

    Mechanisms responsible for blood concentration of therapeutic compounds being considerably altered in acute renal failure were investigated. It was shown that protein unbound fraction of a representative compound quinidine is decreased in acute renal failure, whereas those of acid compounds, such as tolbutamide, has been known to be increased. The decreased unbound fraction of quinidine seems to be related to the fact that the hepatic production of alpha-1 acid glycoprotein (AGP) increases in acute renal failure, resulting in an increase in the plasma AGP concentration. In addition, we revealed that lithium disposition to cerebrospinal fluid (CSF) decreases when the kidney function is impaired, and that the choroid plexial expression of NKCC1 increases in acute renal failure. Therefore, it is plausible that the decreased lithium disposition to CSF is caused by an increased lithium efflux from CSF due to an increased NKCC1 expression in the choroid plexus. We also found that the transporter-mediated intestinal absorption of cephalexin is suppressed by stimulating a cation channel TRPV1 expressed on afferent neurons innervating gastro-intestinal tract. As afferent neurons seem to play an important role in regulating intestinal drug absorption and its alternation in acute renal failure, future study should be conducted to clarify this.

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  • Mechanism of the pharmacokinetic variability and race difference of β-blockers

    Grant number:17590117  2005 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    HASHIMOTO Yukiya, NOZAWA Takashi, TAGUCHI Masato, HONDA Mutsuko

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    Grant amount:\3500000 ( Direct expense: \3500000 )

    Large clinical trials in Caucasians have shown a beneficial effect of p-blockers (carvedilol, metoprolol, and bisoprolol) on patients with chronic heart failure. On the other hand, low-dose carvedilol was approved for management of chronic heart failure in Japan. However, the mechanisms of difference between Caucasian and Japanese in the recommended dose of carvedilol and of large interindividual variability in the therapeutic outcomes of the drug were still unclear. The cytochrome P450 (CYP) 2D6 is involved in the hepatic metabolism of β-blockers, but a pronounced interethnic difference is present in the allele frequencies of CYP2D6. We previously reported that the oral clearance (CL/F) value of metoprolol was significantly decreased in Japanese patients with CYP2D6^*10. The purpose of this study was to clarify the mechanisms involved in the pharmacokinetic variability of carvedilol and bisoprolol, and to evaluate the pharmacodynamic variability of β-blockers under disease condition.
    We evaluated the effect of genetic polymorphisms of CYP (2D6, 2C9, 2C19, 3A5) and UDP-glucuronosyl-transferase (UGT) 2B7, and multidrug resistance 1 (MDR1) on the pharmacokinetics of carvedilol in healthy Japanese volunteers. The CL/F value of R- and S-carvedilol was significantly decreased in patients with CYP2D6^*10 allele, suggesting that CYP2D6^*10 is one of the major factors responsible for large pharmacokinetic variability of the drug. In contrast, the pharmacokinetic variability of bisoprolol was small in Japanese patients, provided that both body weight and renal function are taken into account for the prediction of CL/F of the drug. In addition, we elucidated the pharmacokinetics of bisoprolol in rats with experimental renal failure, and then evaluated the effect of renal failure on the pharmacodynamics of bisoprolol ; however, β-blocking action of the drug was not altered by renal failure. Our results may provide useful information about the use of β-blockers in management of heart failure.

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  • Mechanisms of The Increased Bioavailability of Drugs During Renal Failure

    Grant number:15590126  2003 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    HASHIMOTO Yukiya, AIBA Tetsuya, TAGUCHI Masato

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    Grant amount:\3600000 ( Direct expense: \3600000 )

    It has been reported that the bioavailability of propranolol was increased in patients with renal failure, and that the area under the concentration-time curve for orally administered propranolol in renal failure patients not on hemodialysis is 7-to 8-fold higher than that in healthy volunteers. To investigate the mechanisms responsible for the increased bioavailability of propranolol in renal dysfunction, we studied the drug metabolism and pharmacokinetics using several experimental rat models with renal impairment.
    We reported that the increased bioavailability of propranolol in rats with cisplatin-induced renal dysfunction was mainly a result of the increased absorption rate in the intestine followed by the partial saturation of hepatic first-pass metabolism. However, in bilateral ureter ligation (BUL)-induced renal failure, the absorption rate-dependent decrease in hepatic first-pass clearance of propranolol and metoprolol due to saturation kinetics is marginal, and the hepatic metabolic activity and extraction of the drugs is significantly decreased in BUL rats probably due to the reduced NADPH generation rate in the liver.
    On the other hand, the hepatic and intestinal metabolic activities of P450 were evaluated in rats with surgery-and drug-induced renal dysfunction. Then we found (a) that only selected P450 metabolic activity in the liver is decreased in renal failure, (b) that extent of the decrease in hepatic metabolic activities of P450 is dependent on the etiology of renal failure, and (c) that alteration of CYP3A metabolic activity in the intestine is not always correlated with that in the liver. In addition, to further characterize the intestinal absorption of drugs, we established an assay system evaluating transcellular drug transport using Caco-2 cell monolayers.
    These findings may provide new insight into the altered bioavailability of drugs during renal failure.

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  • Interplay between in tasting and liver for the first-pass metabolism of orally administered drugs

    Grant number:13672384  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    HASHIMOTO Yukiya, TAGUCHI Masato, AIBA Tetsuya

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    Grant amount:\900000 ( Direct expense: \900000 )

    Tacrolimus has poor and variable bioavailability following oral administration in clinical use. We investigated the contribution of intestinal metabolism to the first pass effect of tacrolimus in rats. The rate of absorption of tacrolimus in the intestine was rapid, and the drug was almost completely absorbed after intestinal administration. The bioavailability of tacrolimus was about 40% and 26% after intraportal and intraintestinal administration, respectively, indicating that tacrolimus is metabolized in both the intestine and the liver, and that the metabolism of tacrolimus in the intestine contributes to its extensive and variable first pass metabolism following the oral administration. Furthermore, the effects of renal failure on the pharmacokinetics and bioavailability of tacrolimus were investigated in cisplatin-induced renal failure model rats. The bioavailability of tacrolimus was increased by 35% in rats with impaired renal function as compared with normal control. The blood concentration of tacrolimus during intraportal infusion in rats with renal failure showed non-linearity against dose, and was increased as compared with that in normal rats. The intestinal metabolism was not altered, but the absorption rate was significantly increased in the intestine in rats with renal failure. These results suggested that the hepatic metabolism of tacrolimus is impared in rats with renal failure, and that the accelerated absorption rate in the intestine in renal failure is followed by partial saturation of hepatic extraction, which may be one of the mechanisms of increased bioavailability of tacrolimus.

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  • Analysis of barrier function of intestinal drug-metabolizing enzymes and transporters

    Grant number:11672256  1999 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    YUKIYA Hashimoto, TETSUYA Aiba, IKUKO Yano

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    Grant amount:\3600000 ( Direct expense: \3600000 )

    It has been suggested that cytochrome P450 (CYP) 3A is expressed in the intestine as well as liver, and that the intestinal metabolism contributes largely to the oral bioavailability of tacrolimus and other CYP3A substrates in clinical studies. We investigated the contribution of intestinal metabolism to the first-pass effect of tacrolims in rats.
    Tacrolimus was administered intravenously, intraportally or intraintestinally to rats. Blood samples were collected over a 240-min period, and blood tacrolimus concentrations were measured. The extraction ratios of tacrolimus in the intestine and liver were investigated. The rate of absorption of tacrolimus in the intestine was rapid, and the drug was almost completely absorbed after intestinal administration. The bioavailability of tacrolimus was about 40% and 25% after intraportal and intraintestinal administration, respectively, indicating that tacrolimus is metabolized in both the intestine and the liver. Tacrolimus was significantly metabolized in the everted sac of the rat intestine.
    The present study suggested that the metabolism of tacrolimus in the intestine contributes to its extensive and variable first-pass metabolism following the oral administration. In addition, the exorption by P-glycoprotein, as well as metabolism by CYP3A in the intestine, may contribute to the first pass effects of some drugs, which are substrates of these proteins.

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