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Secondary pouchitis in a post-operative patient with ulcerative colitis,successfully treated by salvage surgery

World Journal of Gastroenterology 2005年第43期11卷 6888-6890页

作者： yuji toiyama Toshimitsu Araki Shigeyuki Yoshiyama Chikao Miki Masato Kusunoki The Second Department of Surgery

We report a case of secondary pouchitis, defined as a mucosal inflammatory lesion in the ileal reservoir provoked by pouch-related complication following total colectomy and pouch anal anastomosis, which was successfully treated by salvage surgery. A 20-year-old woman with ulcerative colitis developed acute severe bloody diarrhea following proctocolectomy, ileal pouchanal anastomosis and diverting ileostomy. She was diagnosed as having a secondary pouchitis mainly caused by a peripouch abscess and partly concerned with the abnormal pouch formation. The remnantrectum and ileal pouch were excised and ileal pouch-anal anastomosis and diverting ileostomy were *** postoperative course was uneventful with no sign of pouchitis. Salvage surgery may be indicated to treat secondary pouchitis when caused by surgery-related complications.

关键词： Ulcerative colitis Ileal pouch-anal anastomosis Secondary pouchitis Salvage operation

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Persistence of gene expression changes in noninflamed and inflamed colonic mucosa in ulcerative colitis and their presence in colonic carcinoma

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World Journal of Gastroenterology 2005年第33期11卷 5151-5155页

作者： yuji toiyama Akira Mizoguchi Kazushi Kimura Toshimitsu Araki Shigeyuki Yoshiyama Kouhei Sakaguchi Chikao Miki Masato Kusunoki The Second Department of Surgery Mie University School of Medicine 2-174 EdobashiTsuMie 514-8507Japan the Department of Anatomy Faculty of Medicine Mie UniversityEdobashiTsu Mie 514-8507 Japan The Second Department of Surgery Mie University School of Medicine 2-174 Edobashi Tsu Mie 514-8507Japan the Department of Anatomy Faculty of Medicine Mie University Edobashi Tsu Mie 514-8507 Japan The Second Department of Surgery Mie University School of Medicine 2-174 Edobashi Tsu Mie 514-8507 Japan

AIM： A few studies have applied genomic-wide gene expression analysis in inflamed colon tissue sample in ulcerative colitis （UC）. We reported the first study of non-inflamed mucosal gene expression in UC and explored its clinical implication. METHODS： Non-inflamed mucosa was obtained from 6 UC patients who received total colectomy. The gene expression of UC in noninflamed mucosa was monitored with a microarray. For a selected gene, RT-PCR was performed to verify array results and to further examine expression pattern in inflamed mucosa of UC, colorectal cancer tissue and normal mucosa using additional matched pairs. RESULTS： Two genes showing 2.5-fold decreased expression with significance set at in UC samples were borneo box a4 （HOXa4） and mads box transcription enhancer factor 2, polypeptide B （MEF2b）. RT-PCR showed that MEF2b expression in non-inflamed mucosa was significantly downregulated, whereas the expression of MEF2b increased in accordance with the severity of mucosal inflammation. HOXa4 expression both in inflamed and non-inflamed mucosa in UC was consistently downregulated, and the downregulation of HOXa4 was also found in colorectal carcinoma. CONCLUSION： It is suggested that the MEF2b expression in UC which increase in accordance with inflammation may be induced by the inflammatory mediator. In contrast the downregulation of HOXa4 may be partly involved in the pathogenesis of disease including UC and UC-related carcinogenesis.

关键词： Ulcerative colitis OligonucleoUde array Geneexpression

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TTYH2,a human homologue of the Drosophila melanogaster gene tweety,is up-regulated in colon carcinoma and involved in cell proliferation and cell aggregation

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World Journal of Gastroenterology 2007年第19期13卷 2717-2721页

作者： yuji toiyama Akira Mizoguchi Kazushi Kimura Junichirou Hiro Yasuhiro Inoue Tomonari Tutumi Chikao Miki Masato Kusunoki Department of Gastrointestinal and Pediatric Surgery Division of Reparative Medicine Institute of Life Sciences Mie University Graduate School of Medicine Japan Department of Anatomy Faculty of Medicine Mie University 2-174 EdobashiTsu Mie 514-8507 Japan

AIM: To investigate the expression patterns of TTYH2 in the human colon cancer and colon cancer cell lines and to evaluate the inhibitory effect of small interfering RNA (siRNA) on the expression of TTYH2 in colon cancer cell ***: We investigated the expression patterns of TTYH2 in colon cancer, adjacent non-tumorous colon mucosa, and cancer cell lines (DLD-1, caco-2, and Lovo) by RT-PCR. Furthermore, a siRNA plasmid expression vector against TTYH2 was constructed and transfected into DLD-1 and Caco-2 with LipofectamineTM 2000. The down regulation of TTYH2 expression was detected by RT-PCR and the role of siRNA in inducing cell proliferation and cell aggregation was evaluated by MTT and aggregation ***: TTYH2 gene expression in colon cancer tissue was significantly up-regulated compared with normal colonic mucosa (1.23 ± 0.404 vs 0.655 ± 0.373, P = 0.0103). Colon cancer derived cell lines including DLD-1, Caco-2, and Lovo also expressed high levels of TTYH2. In contrast, transfection with siRNA-TTYH2 signifi cantly inhibited both proliferation and scattering of these cancer cell ***: The present work demonstrates, for the fi rst time, that the TTYH2 gene expression is signifi cantly up-regulated in colon cancer. The TTYH2 gene may play an important role in regulating both proliferating andmetastatic potentials of colorectal cancer.

关键词： TTYH2 Colorectal carcinoma Cell proliferation Cell aggregation

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