Document Detail


Study of the possible enteropancreatic circulation of pancreatic amylase in the dog.
MedLine Citation:
PMID:  6166206     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The possible existence of an enteropancreatic circulation of amylase was investigated in the dog. Endogenous amylase concentration in pancreatic venous blood was consistently greater than that in arterial blood, indicating a net flux of amylase from the pancreas to blood. Less than 0.02% of the metabolic clearance of 125I-amylase was accounted for by 125I-amylase in pancreatic secretions, indicating a minimal flux of amylase from the blood to pancreatic secretions. The venous-arterial amylase concentration across gut segments containing large quantities of amylase was not significantly different from 1.00, indicating absorption of less than 0.2% of the luminal amylase per hour. No 125I-amylase was detectable in serum after endoscopic instillation of labeled enzyme into the duodenum. These studies demonstrate negligible intestinal absorption of amylase and negligible pancreatic extraction of amylase, indicating negligible enteropancreatic circulation of pancreatic amylase in the dog.
Authors:
M D Levitt; C J Ellis; S M Murphy; M L Schwartz
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of physiology     Volume:  241     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1981 Jul 
Date Detail:
Created Date:  1981-08-27     Completed Date:  1981-08-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  G54-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Amylases / blood*
Animals
Arteries / physiology
Dogs
Kinetics
Pancreas / blood supply,  enzymology*
Veins / physiology
Chemical
Reg. No./Substance:
EC 3.2.1.-/Amylases

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


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