Case Control Study
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Nov 21, 2019; 25(43): 6416-6429
Published online Nov 21, 2019. doi: 10.3748/wjg.v25.i43.6416
Altered profiles of fecal metabolites correlate with visceral hypersensitivity and may contribute to symptom severity of diarrhea-predominant irritable bowel syndrome
Wen-Xue Zhang, Yu Zhang, Geng Qin, Kai-Min Li, Wei Wei, Su-Yun Li, Shu-Kun Yao
Wen-Xue Zhang, Yu Zhang, Geng Qin, Wei Wei, Graduate School, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
Wen-Xue Zhang, Yu Zhang, Geng Qin, Wei Wei, Shu-Kun Yao, Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, China
Kai-Min Li, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
Su-Yun Li, Department of Epidemiology and Health Statistics, School of Public Health, Qingdao University, Qingdao 266071, Shandong Province, China
Author contributions: Zhang WX designed and performed the study, analyzed the data and drafted the manuscript; Zhang Y, Qin G and Wei W collected material and clinical data from patients; Li KM gave guidance and support on experimental procedure and data interpretation; Li SY contributed to design of the study and analysis of data; Yao SK designed the study, supervised the study performance, revised the manuscript, and obtained the funding.
Supported by the National Key Technology Support Program for the “12th Five-Year Plan” of China, No. 2014BAI08B00; and the Research Projects on Biomedical Transformation of China-Japan Friendship Hospital, No. PYBZ1815.
Institutional review board statement: This study was approved by the Ethics Committee of China-Japan Friendship Hospital, Beijing, China.
Informed consent statement: All study participants provided written informed consent prior to study enrollment.
Conflict-of-interest statement: All authors report no conflicts of interest.
Data sharing statement: Technical appendix, statistical code, and dataset available from the first author at
STROBE statement: The authors have read the STROBE Statement, and the manuscript was prepared and revised according to the STROBE Statement.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See:
Corresponding author: Shu-Kun Yao, MD, PhD, Professor, Department of Gastroenterology, China-Japan Friendship Hospital, 2nd Yinghua East Road, Chaoyang District, Beijing 100029, China.
Telephone: +86-10-84205108 Fax: +86-10-84205108
Received: September 19, 2019
Peer-review started: September 19, 2019
First decision: October 14, 2019
Revised: October 19, 2019
Accepted: November 1, 2019
Article in press: November 1, 2019
Published online: November 21, 2019
Core Tip

Core tip: We comprehensively assessed the clinical and psychological characteristics of irritable bowel syndrome with predominant diarrhea (IBS-D) , visceral sensitivity, and fecal metabolites. As expected, the data confirmed that metabolite compositions were different in subjects with or without IBS-D and the levels of some metabolites were significantly correlated with IBS Symptom Severity System score, visceral sensitivity, and the severity or frequency of abdominal pain. Furthermore, a potential biomarker panel was identified to correlate with the symptom severity of IBS-D. These preliminary findings provide some clues for IBS-D pathogenesis and for the search for biomarkers in symptom severity.