Document Detail


Technical note: adipose tissue blood flow in miniature swine (Sus scrofa) using the 133xenon washout technique.
MedLine Citation:
PMID:  12019618     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to examine the 133xenon washout technique as a viable method for measuring adipose tissue blood flow (ATBF) in swine. Using a total of 32 female Yucatan miniature swine (Sus scrofa), the partition coefficient for 133xenon in swine subcutaneous adipose tissue was determined and ATBF was measured at rest and under various physiological conditions. These conditions included feeding, anesthesia, epinephrine infusion, and acute exercise. The effects of epinephrine and acute exercise were examined in both sedentary and exercise-trained swine. The partition coefficient value for 133xenon in swine subcutaneous adipose tissue was 9.23+/-0.26 mL/g (mean +/- SD, n = 10). The average value for resting ATBF in swine was 3.98+/-2.72 mL/(100 g tissue-min) (n = 19). Feeding increased ATBF by approximately fivefold over fasting values, and isoflurane anesthesia significantly decreased ATBF compared to rest (1.64+/-1.12 vs 3.92+/-4.22 mL/[100 g x min], n = 10). A 30-min epinephrine infusion (1 microg/[kg BW x min]) significantly increased ATBF from a resting value of 3.13+/-2.61 to 10.35+/-5.31 mL/(100 g x min) (n = 12). Epinephrine infusion into exercise-trained swine increased ATBF to the same extent as when infused into sedentary swine. An acute, 20-min bout of exercise significantly increased ATBF in swine, and the sedentary swine showed a larger increase in ATBF than their exercise-trained littermates relative to rest: 7.83 vs 2.98 mL/(100 g x min). In conclusion, the 133xenon washout technique appears to be a viable method for measuring ATBF in swine; our findings are comparable to swine ATBF values reported using the microsphere method and are consistent with values reported in animal and human studies.
Authors:
H E Moher; G B Carey
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of animal science     Volume:  80     ISSN:  0021-8812     ISO Abbreviation:  J. Anim. Sci.     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-05-21     Completed Date:  2002-10-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8003002     Medline TA:  J Anim Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1294-8     Citation Subset:  IM    
Affiliation:
Department of Animal and Nutritional Sciences, University of New Hampshire, Durham 03824, USA.
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MeSH Terms
Descriptor/Qualifier:
Adipose Tissue / blood supply*
Adrenergic Agonists / administration & dosage,  pharmacology
Anesthesia / veterinary
Animals
Epinephrine / administration & dosage,  pharmacology
Female
Infusions, Parenteral / veterinary
Physical Conditioning, Animal / physiology
Regional Blood Flow / drug effects
Swine
Swine, Miniature / physiology*
Xenon Radioisotopes / diagnostic use*
Chemical
Reg. No./Substance:
0/Adrenergic Agonists; 0/Xenon Radioisotopes; 51-43-4/Epinephrine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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