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Title: Pilot study of the efficacy of renzapride on gastrointestinal motility and symptoms in patients with constipation-predominant irritable bowel syndrome
Authors: Tack, Jan ×
Middleton, S J
Horne, M C
Piessevaux, H
Bloor, J S
Meyers, N L
Palmer, R M J #
Issue Date: May-2006
Series Title: Alimentary Pharmacology & Therapeutics vol:23 issue:11 pages:1655-65
Abstract: AIM: To investigate the efficacy and safety of renzapride, a potent 5-hydroxytryptamine type-4 receptor full agonist and 5-hydroxytryptamine type-3 receptor antagonist in patients with constipation-predominant irritable bowel syndrome. METHODS: In this dose-escalating pilot study, 17 patients with constipation-predominant irritable bowel syndrome received placebo, renzapride 2 mg o.d. and renzapride 2 mg b.d. sequentially for 28 days. Response was determined by radio-opaque marker measurement of overall gastrointestinal and segmental colonic transit and patients' assessment of their irritable bowel syndrome symptoms. RESULTS: Renzapride reduced mean overall gastrointestinal transit time (placebo, 2.9 +/- 1.6 days; renzapride 2 mg o.d., 2.6 +/- 1.4 days; renzapride 2 mg b.d., 1.9 +/- 1.6 days) (P = 0.024) and accelerated segmental colonic transit, with statistically significant differences for renzapride 2 mg b.d. over placebo in caecum/ascending colon (P = 0.019) and descending colon (P = 0.022). Renzapride also reduced abdominal pain, increased the number of pain-free days and improved stool consistency. The frequency of reported adverse events was similar on renzapride and placebo. CONCLUSIONS: Renzapride is well-tolerated, stimulates gastrointestinal transit and improves symptoms in patients with constipation-predominant irritable bowel syndrome, particularly at the 2 mg b.d. dose, where improvements in gastrointestinal symptoms were evident over placebo. This study has established proof of concept and supports further investigation of renzapride in patients with constipation-predominant irritable bowel syndrome.
URI: 
ISSN: 0269-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Translational Research in GastroIntestinal Disorders
× corresponding author
# (joint) last author

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