INTESTINE Vol.17 No.2(6)


特集名 潰瘍性大腸炎における新たな治療戦略
題名 タクロリムス
発刊年月 2013年 03月
著者 松浦 稔 京都大学医学部附属病院消化器内科
著者 仲瀬 裕志 京都大学医学部附属病院内視鏡部
著者 山本 修司 滋賀県立成人病センター消化器内科
著者 吉野 琢哉 京都大学医学部附属病院消化器内科
著者 千葉 勉 京都大学医学部附属病院消化器内科
【 要旨 】 タクロリムスは放線菌Streptomyces tsukubaenesisから分離されたマクロライド骨格を有する免疫調節薬である.その作用機序はシクロスポリン(CsA)と類似するが,免疫抑制効果はCsAと比べ10~100倍強いとされている.近年,潰瘍性大腸炎の寛解導入におけるタクロリムスの有効性が報告されているが,その治療効果を最大限に発揮するためには,適正な血中トラフ値を保つことが重要である.しかしながら,タクロリムスの適応症例の選択,長期投与の有効性や問題点など解決すべき課題も多く,今後のさらなる検討が必要と思われる.
Theme Novel therapeutic strategy for ulcerative colitis
Title Tacrolimus therapy for ulcerative colitis
Author Minoru Matsuura Department of Gastroenterology and Hepatology, Kyoto University Hospital
Author Hiroshi Nakase Department of Endoscopic Medicine, Kyoto University Hospital
Author Shuji Yamamoto Department of Gastroenterology, Shiga Medical Center for Adults
Author Takuya Yoshino Department of Gastroenterology and Hepatology, Kyoto University Hospital
Author Tsutomu Chiba Department of Gastroenterology and Hepatology, Kyoto University Hospital
[ Summary ] Tacrolimus is a macrolide antibiotic isolated from Streptomyces tsukubaenesis which has immunomodulatory properties. Although tacrolimus has a similar mechanism of action to ciclosporin (CsA), its immunosuppressive effects are 10-100 times greater than that of CsA and provide more reliable oral absorption. In addition to the efficacy of tacrolimus on prophylaxis and treatment of transplant rejection in various organs, such as the liver, kidneys, heart and bone marrow, several recent reports have indicated that tacrolimus is useful as an induction therapy for patients with ulcerative colitis. Optimizing blood trough levels is most important to obtain maximal therapeutic benefits and prevent adverse events related to tacrolimus. Major adverse events associated with tacrolimus include tremors, hot flashs, headaches, renal function impairment, infections and hyperglycemia. However, further studies are required to determine clinical issues, such as selection of appropriate subjects to be treated with tacrolimus and long-term efficacy.
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