Document Detail


Elevated blood pressure in spontaneously hypertensive rats consuming a high sucrose diet is associated with elevated angiotensin II and is reversed by vanadium.
MedLine Citation:
PMID:  9280208     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To determine the changes in serum angiotensin II (Ang II) and endothelin-1 levels induced by vanadium treatment of sugar-fed rats in order to investigate the relationship between changes in blood pressure and Ang II and endothelin-1 levels. METHODS: Male spontaneously hypertensive rats (SHR) were fed starch (control), sucrose, and sucrose plus vanadium compounds at various concentrations. The systolic blood pressure of the rats was estimated by tail-cuff plethysmography. Serum Ang II and endothelin-1 levels were measured by radioimmunoassay. RESULTS: There were increases in systolic blood pressure (by 8%) and in serum Ang II (by 20%) in sucrose-fed SHR compared with control. In sucrose plus vanadium-fed SHR, the lowering of the systolic blood pressure (by 11-16% of the sucrose-fed value) was accompanied by a significant decrease in Ang II levels (by 25-60% of the sucrose-fed value) and an increase in endothelin-1 level (by 61-76% of the sucrose-fed value). CONCLUSION: That Ang II levels are elevated in sucrose-induced hypertension and decreased after vanadium therapy suggests that the renin-angiotensin system plays a role in the induction of hypertension in this model. On the other hand, the elevation of endothelin-1 levels associated with a decreased systolic blood pressure might be secondary to vanadium stimulation of endothelial cells. The data suggest that endothelin-1 is not involved in sugar-induced elevations of the blood pressure.
Authors:
S J Shi; H G Preuss; D R Abernethy; X Li; S T Jarrell; N S Andrawis
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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.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of hypertension     Volume:  15     ISSN:  0263-6352     ISO Abbreviation:  J. Hypertens.     Publication Date:  1997 Aug 
Date Detail:
Created Date:  1997-10-01     Completed Date:  1997-10-01     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  857-62     Citation Subset:  IM    
Affiliation:
Department of Medicine, Georgetown University Medical Center, Washington, D.C. 20007, USA.
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MeSH Terms
Descriptor/Qualifier:
Angiotensin II / blood*
Animals
Blood Pressure / drug effects
Body Weight
Dietary Sucrose / pharmacology*
Endothelin-1 / blood
Hypertension / blood*
Male
Radioimmunoassay
Rats
Rats, Inbred SHR
Vanadium / pharmacology*
Grant Support
ID/Acronym/Agency:
GM08386-07/GM/NIGMS NIH HHS
Chemical
Reg. No./Substance:
0/Dietary Sucrose; 0/Endothelin-1; 11128-99-7/Angiotensin II; 7440-62-2/Vanadium

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


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