| Characterization of sensations induced by capsaicin in the upper gastrointestinal tract. | |
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MedLine Citation:
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PMID: 17391244 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Intraluminal capsaicin induces perception in the jejunum, but chemosensitivity of proximal gastrointestinal regions is unclear. Our aim was to evaluate the quality of perception induced by intraluminal capsaicin in different regions of the upper gastrointestinal tract. Healthy volunteers received either an oral tube for distension and capsaicin perfusion of the mid-duodenum or jejunum or swallowed a capsule containing 0.75 mg capsaicin powder. Graded questionnaires evaluated quality and severity of sensations during distensions, capsaicin infusion and 30 min after ingestion of capsaicin capsules respectively. Duodenal capsaicin induced sensations at lower doses than jejunal capsaicin (P < 0.05). Most prominent sensations evoked by capsaicin infusion were pressure, cramps, pain and nausea; nausea and warmth were more intense during capsaicin infusion than distension (P < 0.05,for the duodenum and jejunum), pain was more intense during distension (P < 0.05, duodenum only). Gastric ingestion of capsaicin capsules mainly induced sensations of pressure, heartburn and warmth. Capsaicin application into the upper gastrointestinal tract reproducibly induced upper abdominal sensation. Qualitative features distinguished chemically from mechanically induced sensations, but both sensitivity for chemical and mechanical stimulation decreased along the intestine. Activation of chemical pathways could be a useful human pain model activating nociceptors apart from mechanical stimulation. |
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Authors:
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J Hammer; H Vogelsang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society Volume: 19 ISSN: 1350-1925 ISO Abbreviation: Neurogastroenterol. Motil. Publication Date: 2007 Apr |
Date Detail:
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Created Date: 2007-03-29 Completed Date: 2007-08-01 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9432572 Medline TA: Neurogastroenterol Motil Country: England |
Other Details:
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Languages: eng Pagination: 279-87 Citation Subset: IM |
Affiliation:
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Abteilung für Gastroenterologie und Hepatologie, Medical University of Vienna, Vienna, Austria. Johann.Hammer@univie.ac.at |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Administration, Oral Adult Analgesics, Non-Narcotic / pharmacology Capsaicin / administration & dosage, pharmacology* Duodenum / drug effects, physiology* Female Hot Temperature Humans Jejunum / drug effects, physiology* Male Nausea / chemically induced Perception / drug effects, physiology Reference Values Sensation / drug effects, physiology* |
| Chemical | |
Reg. No./Substance:
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0/Analgesics, Non-Narcotic; 404-86-4/Capsaicin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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