PMID: 9659155Jul 11, 1998Paper

Medium-term effects of a new 5HT3 antagonist, alosetron, in patients with carcinoid diarrhoea

Gut
S B SaslowA R Zinsmeister

Abstract

Carcinoid diarrhoea is associated with rapid small bowel and proximal colonic transit. Intravenous administration of a serotonin type 3 receptor (5HT3) antagonist restores postprandial colonic tone towards normal in carcinoid patients. To evaluate the medium-term effects of an oral 5HT3 antagonist, alosetron, on symptoms, stool fat, and transit in patients with carcinoid diarrhoea. In 27 patients with carcinoid diarrhoea, symptoms were recorded daily and gastrointestinal transit was measured by scintigraphy in a three dose (0.1, 0.5, 2.0 mg, twice daily), randomised (1:1:1), parallel group, four week study. Placebo was given during the first week. Loperamide (2 mg capsules) was used as rescue medication. There were numerical improvements in median diarrhoea score, stool weight, loperamide use, and overall colonic transit at four hours, but no overall significant drug effect was shown. Alosetron reduced the proximal colon emptying rate (p < 0.05 in 20 evaluable comparisons), but did not significantly alter small bowel transit. Alosetron retardation of proximal colonic emptying in patients with carcinoid diarrhoea confirms the potential role of a 5HT3 mechanism in this disorder. Doses of alosetron higher than 2.0 mg twice daily w...Continue Reading

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Citations

Jul 8, 2008·Purinergic Signalling·Fievos Leontiou Christofi
Jun 8, 2004·Clinical Gastroenterology and Hepatology : the Official Clinical Practice Journal of the American Gastroenterological Association·Robin C Spiller
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