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RISS 인기검색어
- 검색키워드
- 저자 : ( Takako Miyazaki ) (검색결과 2 건)
- 무료
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( Toshiyuki Sato ),( Tetsuya Takagawa ),( Yoichi Kakuta ),( Akihiro Nishio ),( Mikio Kawai ),( Koji Kamikozuru ),( Yoko Yokoyama ),( Yuko Kita ),( Takako Miyazaki ),( Masaki Iimuro ),( Nobuyuki Hida ) 대한장연구학회 2017 Intestinal Research Vol.15 No.3
Background/Aims: Recent genome-wide analyses have provided strong evidence concerning adverse events caused by thiopurine drugs such as azathioprine (AZA) and 6-mercaptopurine. The strong associations identified between NUDT15 p.Arg139Cys and thiopurine-induced leukopenia and severe hair loss have been studied and confirmed over the last 2 years. However, other coding variants, including NUDT15 p.Val18_Val19insGlyVal, NUDT15 p.Val18Ile, and FTO p.Ala134Thr, and a noncoding variation in RUNX1 (rs2834826) remain to be examined in detail in this respect. Therefore, we investigated the correlation between these adverse events and the 5 recently identified variants mentioned above among Japanese patients with inflammatory bowel diseases (IBD). Methods: One hundred sixty thiopurine-treated patients with IBD were enrolled. Genotyping was performed using TaqMan SNP Genotyping Assays or Sanger sequencing. Results: None of the 5 variants were associated with gastrointestinal intolerance to AZA. However, NUDT15 p.Arg139Cys was significantly associated with the interval between initiation and discontinuation of AZA among patients with gastrointestinal intolerance. This variant was strongly associated with early (<8 weeks) and late (≥8 weeks) leukopenia and severe hair loss. Moreover, it correlated with the interval between initiation of thiopurine therapy and leukopenia occurrence, and average thiopurine dose. NUDT15 p.Val18_Val19insGlyVal, NUDT15 p.Val18Ile, FTO p.Ala134Thr, and RUNX1 rs2834826 exhibited no significant relationship with the adverse events examined. Conclusions: Of the 5 variants investigated, NUDT15 p.Arg139Cys had the strongest impact on thiopurineinduced leukopenia and severe hair loss; therefore, its genotyping should be prioritized over that of other variants in efforts to predict these adverse events in Japanese patients with IBD. (Intest Res 2017;15:328-337)
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( Shiro Nakamura ),( Hirotsugu Imaeda ),( Hiroki Nishikawa ),( Masaki Iimuro ),( Minoru Matsuura ),( Hideo Oka ),( Junsuke Oku ),( Takako Miyazaki ),( Hirohito Honda ),( Kenji Watanabe ),( Hiroshi Nak 대한장연구학회 2018 Intestinal Research Vol.16 No.4
Background/Aims: Noninvasive objective monitoring is advantageous for optimizing treatment strategies in patients inflam matory bowel disease (IBD). Fecal calprotectin (FCP) is superior to traditional biomarkers in terms of assessing the activity in patients with IBD. However, there are the differences among several FCP assays in the dynamics of FCP. In this prospective multicenter trial, we investigated the usefulness of FCP measurements in adult Japanese patients with IBD by reliable enzyme immunoassay using a monoclonal antibody. Methods: We assessed the relationship between FCP levels and disease or en doscopic activity in patients with ulcerative colitis (UC, n=64) or Crohn’s disease (CD, n=46) compared with healthy controls (HCs, n=64). Results: FCP levels in UC patients strongly correlated with the Disease Activity Index (r<sub>s</sub>=0.676, P<0.0001) and Mayo endoscopic subscore (MES; r<sub>s</sub>=0.677, P<0.0001). FCP levels were significantly higher even in patients with inactive UC or CD compared with HCs (P=0.0068, P<0.0001). The optimal cutoff value between MES 1 and 2 exhibited higher sensitivity (94.1%). FCP levels were significantly higher in active UC patients than in inactive patients (P<0.001), except those with proc titis. The Crohn’s Disease Activity Index tended to correlate with the FCP level (rs=0.283, P=0.0565). Conclusions: Our testing method using a monoclonal antibody for FCP was well-validated and differentiated IBD patients from HCs. FCP may be a use ful biomarker for objective assessment of disease activity in adult Japanese IBD patients, especially those with UC. (Intest Res 2018;16:554-562)
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