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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2019, Vol. 24 ›› Issue (1): 63-70.doi: 10.12092/j.issn.1009-2501.2019.01.011

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Effect of ketotifen on gastrointestinal symptoms, visceral sensitivity and intestinal mast cells in patients with irritable bowel syndrome with diarrheal

WANG Jing1, ZHOU Haibin2, GU Weigang3, WANG Xia3, YANG Jianfeng3   

  1. 1 Department of Pharmacy, Hangzhou Geriatric Hospital, Hangzhou 310022, Zhejiang, China; 2 Department of Gastroenterology, Hangzhou Geriatric Hospital, Hangzhou 310022, Zhejiang, China; 3 Department of Gastroenterology, Hangzhou First People's Hospital Affiliated to School of Medicine of Zhejiang University, Hangzhou 310006, Zhejiang, China
  • Received:2018-10-17 Revised:2018-11-30 Online:2019-01-26 Published:2019-01-25

Abstract:

AIM: To investigate the effects of ketotifen on abdominal symptoms, visceral sensitivity and intestinal mast cells in patients with irritable bowel syndrome with diarrhea (IBS-D). METHODS: Patients with IBS-D were randomly divided into ketotifen group and placebo group, the ketotifen group were oral administration of ketotifen tablets, 1 mg, bid for 8 weeks, the control group were received oral placebo for 8 weeks. Gastrointestinal symptoms evaluation scale questionnaire, anorectal sensory function, the number and activity status of mast cell (MC) were measured before and 8 weeks after treatment in these two group. RESULTS: (1) A total of 87 IBS-D patients were included, 44 in ketotifen group and 43 in control group, there was no significant difference in age and sex between the two groups. (2) Total effective rate of improvement of gastrointestinal symptoms in ketotifen group was significantly higher than that in control group (72.7% vs. 34.9%, P<0.01). (3) Compared with before treatment, first sensation, urge to defecation, discomfort/pain sensory thresholds of ketotifen group were significantly increased after treatment (P<0.05), no significant changes were observed in the control group (P>0.05); (4) Compared with before treatment, the number of MC in terminal ileum, the proportion of MC degranulation state in the terminal ileum, ascending colon, sigmoid colon in ketotifen group were significantly decreased after treatment (P<0.05), there was no significant change in the number of MC and the proportion of degranulation state in the control group (P>0.05); (5) 5 patients (11.4%) in ketotifen group went through adverse reactions, mainly manifested as feeling of drowsiness or fatigue, which disappeared after taking the drug one week. CONCLUSION: Ketotifen can significantly relieve the gastrointestinal symptoms and improve the visceral sensitivity of patients with IBS-D, which is closely related to its effect on reducing the number and activity of MC in intestinal mucosa, especially the terminal ileum.

Key words: ketotifen, irritable bowel syndrome with diarrheal, visceral sensitivity, mast cells

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