| Role of autonomic nervous system in postprandial thermogenesis in dogs. | |
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MedLine Citation:
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PMID: 3591936 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two phases in postprandial thermogenesis have been recently identified in dogs; an initial cephalic phase lasting 45 min and a subsequent digestive phase occurring after 45 min. The objective of this study was to determine the role of the autonomic nervous system during these two phases in dogs. O2 uptake (VO2) as well as respiratory quotient (RQ) were monitored at least 1 h before and 2 h after a meal of 1,034 kcal under the following infusion conditions: saline, propranolol, atropine, propranolol plus atropine, phenoxybenzamine, and propranolol plus phenoxybenzamine. The initial peak value for VO2 increase was 100% in the cephalic phase and 40% in the digestive phase during the saline infusion. The VO2 response during the initial phase was 58 and 56% less with propranolol and atropine, respectively, compared with the control experiment. A 36% decrease in the VO2 response was found during the digestive phase with propranolol, whereas it was abolished by atropine. Propranolol and atropine given together decreased the VO2 response during the cephalic phase by 27% and abolished it completely in the digestive phase. Phenoxybenzamine did not affect the VO2 or RQ responses during the whole period and when given in combination with propranolol the same result as propranolol alone was found. These findings indicate that both the parasympathetic and sympathetic nervous system participate in the control of postprandial thermogenesis during both the cephalic and digestive phases. |
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Authors:
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P Diamond; J LeBlanc |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of physiology Volume: 252 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1987 Jun |
Date Detail:
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Created Date: 1987-07-17 Completed Date: 1987-07-17 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0370511 Medline TA: Am J Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: E719-26 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Atropine / pharmacology Autonomic Nervous System / physiology* Basal Metabolism Body Temperature Regulation* Dogs Food* Heart / drug effects Oxygen Consumption / drug effects Phenoxybenzamine / pharmacology Propranolol / pharmacology |
| Chemical | |
Reg. No./Substance:
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51-55-8/Atropine; 525-66-6/Propranolol; 59-96-1/Phenoxybenzamine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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