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Efficacy of a pH-dependent controlled-release mesalazine based on clinical and endoscopic assessment for ulcerative colitis: a retrospective cohort study

Authors Matsumoto S, Yoshida Y

Received 13 April 2015

Accepted for publication 9 June 2015

Published 31 July 2015 Volume 2015:8 Pages 225—230


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Professor Andreas M Kaiser

Satohiro Matsumoto, Yukio Yoshida

Department of Gastroenterology, Saitama Medical Center, Jichi Medical University, Saitama, Japan

Background: We conducted a retrospective cohort study to clinically and endoscopically assess the efficacy of delayed-release mesalazine for ulcerative colitis.
Methods: The study included 104 ulcerative colitis patients (52 men, 52 women) initiated on treatment with delayed-release mesalazine between 2009 and 2012. The clinical symptoms at months 0, 1, and 12 were scored using the clinical activity index. An endoscopic index was also used to determine disease activity in 72 patients who underwent total colonoscopy before and after mesalazine treatment.
Results: The clinical activity index at months 0, 1, and 12 were 4.6±2.8, 3.4±1.8, and 2.8±1.4, respectively, decreasing with time after the start of mesalazine treatment (P<0.001). The endoscopic index decreased significantly from 4.5±3.2 before to 3.1±2.8 after the start of delayed-release mesalazine treatment in the mean follow-up period of 1.0±0.4 years (P<0.001).
Conclusion: Delayed-release mesalazine was confirmed to be effective both clinically and endoscopically.

Keywords: ulcerative colitis, pH-dependent controlled-release mesalazine, clinical activity index, endoscopic index

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