Publications by authors named "Manabu Shiraki"

Article Synopsis
  • IBD patients have lower immunity levels against certain viruses (measles, rubella, mumps, varicella) compared to healthy control subjects, indicating a potential risk when starting immunosuppressive therapy.
  • The study included 437 IBD patients (with ulcerative colitis and Crohn's disease) and 225 healthy individuals, finding significant differences in seropositivity, particularly for patients with ulcerative colitis.
  • Screening for immunity to these viruses in IBD patients is recommended before they begin immunosuppressive treatment to prevent potential complications.
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Background & Aims: The accuracy of ultrasound for evaluation of individual colorectal segments in patients with inflammatory bowel diseases (IBD) has not been evaluated in a systematic review. We evaluated the diagnostic accuracy of ultrasound in different colorectal segments of patients with IBD.

Methods: We searched publication databases from inception through March 2019 for studies that assessed the accuracy of ultrasound in detection of inflammation in right, transverse, and left colon and in rectum in patients with IBD, using findings from colonoscopy as the reference standard.

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Background: Several studies have reported that faecal calprotectin and lactoferrin showed a close correlation with endoscopic inflammation in patients with inflammatory bowel disease. However, the clinical significance of faecal calprotectin or lactoferrin in postoperative Crohn's disease (CD) is not fully evaluated. This prospective study was to investigate the relationship between endoscopic activity, and faecal calprotectin and lactoferrin, and assess the predictive value of these markers for future recurrence.

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Purpose: This prospective study was to evaluate the significance of fecal calprotectin and lactoferrin for the prediction of ulcerative colitis (UC) relapse.

Methods: Eighty UC patients in remission for ≥3 months on mesalamine as maintenance therapy were included. At entry, stool samples were collected for the measurement of calprotectin and lactoferrin.

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Objective: Stress is thought to be one of the triggers of relapses in patients with inflammatory bowel disease (IBD). We examined the rate of relapse in IBD patients before and after the Great East Japan Earthquake.

Design: A retrospective cohort study.

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Active ulcerative colitis (UC) is frequently associated with infiltration of a large number of leukocytes into the bowel mucosa. Leukocytapheresis is a novel nonpharmacologic approach for active UC, in which leukocytes are mechanically removed from the circulatory system. Current data indicate that leukocytapheresis is efficacious in improving response and remission rates with excellent tolerability and safety in patients with UC.

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Purpose: The aim of this study was to investigate the long-term effect of enteral nutrition (EN) as a maintenance therapy in Crohn's disease (CD) patients following surgery.

Methods: This study was an extension of our previous study to prolong the duration of intervention and follow-up from 1 to 5 years. Forty consecutive patients who underwent resection for ileal or ileocolic CD were included.

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Individuals with inflammatory bowel disease (IBD) are at increased risk of developing gastrointestinal cancer. Here, we have tested the possibility that chronic inflammation could trigger mutations. For this, we have used IL-10-deficient (IL-10-/-) mice, which spontaneously develop intestinal inflammation, in combination with a transgenic gpt gene and red/gam gene (gpt+IL-10-/-), which is a well-characterized mutation reporter locus.

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We report here 3 cases of rectal varices treated with endoscopic variceal ligation and discuss the pathogenesis, treatment, and prognosis of rectal varices with referring to previous reports. Of the 3 patients, 2 had been diagnosed as liver cirrhosis and 1 as extrahepatic portal hypertension. All of the 3 patients had previously undergone treatment of esophagogastric varices.

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T-helper-1 (Th1) cytokines play an important role in Crohn's disease, and interleukin-12 (IL-12), which is composed of two subunits, p40 and p35, drives Th1 differentiation. In previous reports, IL-12 p40 was shown to prevent IL-12 from binding to the receptor. We demonstrate here the effect of IL-12 p40 overexpression in intestinal epithelia on enterocolitis mediated by Th1 cells in IL-10-deficient (IL-10(-/-)) mice on a C57BL/6J background.

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Background: The diagnosis of mucosa-associated lymphoid tissue (MALT) lymphoma in the intestine is occasionally difficult from histological examination on small biopsy specimens obtained by endoscopy. This study focused on unusual cases of reactive lymphoproliferative disorders in the intestine in order to make a differential diagnosis of MALT lymphoma.

Materials And Methods: Five patients were examined with regards to clinical symptoms, endoscopic findings and multiparameter analysis (the morphological examination using routine hematoxylin and eosin staining by light microscopy, immunophenotyping by flow cytometry (FCM), immunohistochemistry and genotyping of extracted DNA).

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A 73-year-old male was referred to our hospital for abdominal pain, diarrhea and general fatigue lasting for 3 weeks. Physical examination of the abdomen revealed a firm mass in the left abdominal region. Computed tomography revealed a mass around the descending colon.

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Background: To clarify the usefulness of the second-generation photosensitizer, mono-L-aspartyl chlorin e6 (NPe6), we examined the possibility of photodynamic diagnosis and photodynamic therapy for intestinal tumors in a mouse model.

Materials And Methods: NPe6 was intravenously administered to the tumor-bearing mice through the tail vein. The intestinal tumor sites were irradiated with a 664-nm diode laser at constant intervals after the administration of photosensitizers.

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