Effects of alosetron on gastrointestinal transit time and rectal sensation in patients with irritable bowel syndrome
Open accessAbstract
BACKGROUND: Alosetron, a 5-HT3-receptor antagonist, relieves abdominal pain and improves bowel function in non-constipated, female patients with irritable bowel syndrome. 5-HT3 antagonists delay colonic transit, increase colonic compliance, and increase small intestinal water absorption. AIM: To evaluate the effects of alosetron on gastrointestinal and colonic transit, rectal compliance and rectal sensation in irritable bowel syndrome. METHODS: A double-blind, placebo-controlled, two-dose study of alosetron was performed in 25 non-constipated irritable bowel syndrome patients, with paired studies before and after 4 weeks of treatment with placebo (n=5), 1 mg alosetron (n=10) or 4 mg (n=10) alosetron b.d. Gastrointestinal and colonic transit were measured by scintigraphy. Rectal compliance and sensation were assessed by rectal balloon distention with a barostat. RESULTS: There was a trend (P=0.06) for 1 mg alosetron to increase rectal compliance (median pressure at half maximum volume 11 mmHg after alosetron vs. 15.6 mmHg before alosetron). The 1 mg b.d. alosetron dose non-significantly retarded proximal colonic transit. Alosetron and placebo reduced sensory scores relative to baseline values; none of the changes induced by alosetron was significant relative to placebo. CONCLUSIONS: Alosetron had no significant effect on gastrointestinal transit or rectal sensory and motor mechanisms in non-constipated irritable bowel syndrome patients in this study. Alosetron's effects on colonic sensorimotor function and central sensory mechanisms deserve further evaluation.
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5-HT3 antagonists alter rectal compliance.
“5-HT3 antagonists also alter rectal compliance”
From Irritable bowel syndrome (2020) · cites this paper as [120]
The Introduction reports that the 5-HT3 antagonist ondansetron increased rectal compliance in patients with irritable bowel syndrome. But the paper's own 'Effect of alosetron on rectal compliance' section found no statistically significant effect for the tested doses of alosetron, so it does not support the unqualified statement about 5-HT3 antagonists generally. Page numbers were not supplied. (LLM, conf=0.86)
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- Authors
- Thumshirn, Coulie, Camilleri, Zinsmeister, Burton, & Dyke, V.
- Affiliations
- Mayo Clinic (US)
- Corresponding author
- Camilleri
- Venue
- Alimentary Pharmacology & Therapeutics
- Publisher
- Wiley
- Published
- 2000-07
- Volume
- 14
- Issue
- 7
- Pages
- 869-878
- ISSN
- 0269-2813 (ISSN-L)
- 1365-2036
- OpenAlex
- W2075855583
- Cited by
- 55
- References
- 47
- Citations by year
- 2024: 1 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2015: 1 · 2014: 1 · 2012: 3
- FWCI
- 6.42
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Alimentary Pharmacology & Therapeutics (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (and K24, NIH-R01)
- National Institute of Diabetes and Digestive and Kidney Diseases (K24 DK02638, R01 DK-54681, K24DK002638, R01DK054681)
- Topics
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Health Sciences › Health Professions › Pharmacy › Infant Health and Development
- Health Sciences › Medicine › Rheumatology › Pelvic floor disorders treatments
- Keywords
- alosetron, irritable bowel syndrome, 5-HT3 receptor antagonists, colonic transit, gastrointestinal transit, rectal compliance, rectal sensation, scintigraphy
- MeSH terms
- Adult, Aged, Carbolines, Colonic Diseases, Functional, Double-Blind Method, Female, Gastrointestinal Transit, Humans, Male, Middle Aged, Psychomotor Performance, Rectum, Serotonin Antagonists
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