Document Detail


Terbutaline decreases the blood flow of the pancreatic islets but does not reduce the diabetogenic action of streptozotocin in the rat.
MedLine Citation:
PMID:  2656272     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Male Sprague-Dawley rats were injected i.v. with either 0.5 ml saline or terbutaline (1 mg/kg body weight) and 5 min later the whole pancreatic blood flow (PBF) and the islet blood flow (IBF) were measured with a microsphere technique. Injection of terbutaline increased the serum insulin concentrations, but had no effect on the serum glucose concentration of the animals. The IBF was decreased by terbutaline by approximately 40%, while the PBF remained unchanged. Furthermore, the diabetogenic action of streptozotocin (SZ; 35 mg/kg bodyweight; i.v.) was not affected by the administration of terbutaline 5 min before the SZ injection. It is concluded that the beta 2-selective adrenoceptor agonist terbutaline selectively decreases the blood flow of the pancreatic islets in spite of its stimulatory effects on the release of insulin. This confirms our previous findings that the IBF and the release of insulin can be dissociated. Moreover, the hyperglycemic action of a single diabetogenic dose of SZ could not be reduced by terbutaline administration despite the reduction in the IBF. This suggests that a decrease in the islet blood flow is not sufficient to prevent the cytotoxicity of SZ.
Authors:
L Jansson; D L Eizirik; S Sandler
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of pharmacology     Volume:  161     ISSN:  0014-2999     ISO Abbreviation:  Eur. J. Pharmacol.     Publication Date:  1989 Feb 
Date Detail:
Created Date:  1989-07-12     Completed Date:  1989-07-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  1254354     Medline TA:  Eur J Pharmacol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  79-83     Citation Subset:  IM    
Affiliation:
Department of Medical Cell Biology, Uppsala University, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Glucose / metabolism
Diabetes Mellitus, Experimental / physiopathology*
Insulin / metabolism
Islets of Langerhans / blood supply*,  drug effects,  metabolism
Male
Rats
Rats, Inbred Strains
Regional Blood Flow / drug effects
Terbutaline / pharmacology*
Chemical
Reg. No./Substance:
0/Blood Glucose; 11061-68-0/Insulin; 23031-25-6/Terbutaline

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


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