| Physiological constraint on feeding behavior: intestinal membrane disaccharidases of the starling. | |
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MedLine Citation:
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PMID: 2916126 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Animals clearly choose what they eat and can even choose among chemically different sugars. The physiological and biochemical mechanisms that constrain feeding choices are largely unknown. In this study, European starlings (Sturnus vulgaris) preferred mixture solutions of D-glucose plus D-fructose to equimolar (double molar caloric value) solutions of sucrose. Intubation feeding of sucrose did not increase blood glucose levels. Sucrose is a useless energy source for these birds because they lack a single digestive enzyme (sucrase) on the small intestinal brush border membrane. However, the membranes possessed separate maltase and isomaltase disaccharidases. This expression pattern and expression patterns of membrane disaccharidases among mammals suggest a role for intestinal enzymes in the coevolutionary interactions between vertebrates and their plant food sources. |
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Authors:
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C Martinez del Rio; B R Stevens |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 243 ISSN: 0036-8075 ISO Abbreviation: Science Publication Date: 1989 Feb |
Date Detail:
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Created Date: 1989-03-14 Completed Date: 1989-03-14 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 794-6 Citation Subset: IM |
Affiliation:
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Department of Zoology, University of Florida, Gainesville 32611. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Birds / physiology* Disaccharidases / physiology Disaccharides / metabolism Evolution Feeding Behavior / physiology* Intestinal Mucosa / enzymology Intestines / physiology* Microvilli / enzymology Sucrase / metabolism |
| Grant Support | |
ID/Acronym/Agency:
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DK-38715/DK/NIDDK NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Disaccharides; EC 3.2.1.-/Disaccharidases; EC 3.2.1.48/Sucrase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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