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Karger AG","issue":"1-2","license":[{"start":{"date-parts":[[2006,1,1]],"date-time":"2006-01-01T00:00:00Z","timestamp":1136073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2006,1,1]],"date-time":"2006-01-01T00:00:00Z","timestamp":1136073600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dig Dis"],"published-print":{"date-parts":[[2006]]},"abstract":"<jats:p>In the gut, serotonin (5-hydroxytryptamine: 5-HT) exerts a variety of effects on intrinsic enteric neurons, extrinsic afferents, enterocytes and smooth muscle cells, which are related to the expression of multiple 5-HT receptor types and subtypes regulating motility, vascular tone, secretion and perception. Agonists and antagonists at 5-HT receptors have gained access to the market for the two major variants of the irritable bowel syndrome (IBS), a functional disorder characterized by abdominal pain associated with diarrhea and\/or constipation in the absence of any organic abnormality. Indeed, the 5-HT&lt;sub&gt;3&lt;\/sub&gt; receptor antagonist alosetron is available in the US market for the treatment of women with severe, diarrhea-predominant IBS (D-IBS) refractory to conventional therapy, whereas tegaserod, a partial 5-HT&lt;sub&gt;4&lt;\/sub&gt; receptor agonist, has been approved by the FDA and other regulatory agencies for the treatment of women with constipation-predominant IBS (C-IBS) or functional constipation. This review is mainly intended to discuss the role of non-neuronal (paracrine) and neuronal 5-HT in the pathophysiology of functional gastrointestinal disorders (FGIDs), such as IBS and functional dyspepsia, and the mechanisms through which drugs acting on 5-HT receptors regulate visceral motility, perception and secretion in these two conditions.<\/jats:p>","DOI":"10.1159\/000090309","type":"journal-article","created":{"date-parts":[[2006,5,26]],"date-time":"2006-05-26T13:49:21Z","timestamp":1148651361000},"page":"59-69","source":"Crossref","is-referenced-by-count":61,"title":["Drugs Acting on Serotonin Receptors for the Treatment of Functional GI 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