Document Detail


Acute pancreatitis in rats: effects of sodium taurocholate, CCK-8, and Sec on pancreatic microcirculation.
MedLine Citation:
PMID:  9124355     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
With use of in vivo microscopy, pancreatic duct permeability, red blood cell (RBC) velocities, functional capillary density (FCD), and overall changes in capillary blood flow (perfusion index) were estimated after intraductal infusion of sodium taurocholate (0.8 ml, 4%) alone or in combination with systemic administration of cholecystokinin (CCK, 0.3 microg/100 g body wt) or secretin (Sec, 10 microg/100 g body wt). Sodium taurocholate mediated a significant increase in pancreatic duct and capillary permeability within 105 +/- 26 s followed by a transient decrease in RBC velocities and a sustained decrease in FCD, which were paralleled by dramatic flow heterogeneity. Therefore, a significant reduction in overall capillary blood flow was calculated. CCK stimulation aggravated the microcirculatory failure due to a decrease in RBC velocities, which was accompanied by an increase in acinar cellular necrosis. Sec stimulation attenuated microcirculatory failure due to a more moderate reduction of FCD. The enhanced pancreatic duct and capillary permeability, which enables free diffusion of pancreatic digestive enzymes into the parenchyma, is the initiating event in acute biliary pancreatitis, causing microcirculatory failure and tissue damage. The microcirculatory changes are secondary and a propagating factor for the development of acini necrosis. Stimulation with CCK worsened the course of acute biliary pancreatitis.
Authors:
T Plusczyk; S Westermann; D Rathgeb; G Feifel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of physiology     Volume:  272     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1997 Feb 
Date Detail:
Created Date:  1997-04-24     Completed Date:  1997-04-24     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  G310-20     Citation Subset:  IM    
Affiliation:
Department of General Surgery, University of Saarland, Homburg/Saar, Germany.
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MeSH Terms
Descriptor/Qualifier:
Acute Disease
Animals
Male
Microcirculation / drug effects
Necrosis
Pancreas / blood supply*,  pathology
Pancreatitis / chemically induced*,  pathology
Rats
Rats, Inbred Lew
Secretin / pharmacology*
Sincalide / pharmacology*
Taurocholic Acid / pharmacology*
Chemical
Reg. No./Substance:
1393-25-5/Secretin; 25126-32-3/Sincalide; 81-24-3/Taurocholic Acid

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


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