Document Detail


Renal ACE2 expression and activity is unaltered during established hypertension in adult SHRSP and TGR(mREN2)27.
MedLine Citation:
PMID:  19927150     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Differential renal expression of a homolog of the angiotensin-converting enzyme (ACE), that is, ACE2, has been implicated as a genetic basis of polygenetic hypertension in the stroke-prone spontaneously hypertensive rat model. However, data on the role of ACE2 in hypertension are still inconclusive. Therefore, we analyzed kidney ACE2 mRNA, ACE2 protein and ACE2 enzyme activities in the adult polygenetic stroke-prone spontaneously hypertensive rat (SHRSP) and the monogenetic TGR(mREN2)27 rat models, in comparison with their normotensive reference strains, Wistar-Kyoto (WKY) and Spraque-Dawley (SD) rats, respectively. Kidney ACE2 mRNA was studied using quantitative real-time reverse transcriptase-PCR (RT-PCR) in cortex and medulla, whereas protein expression was scored semiquantitatively in detail in different renal structures using immunohistochemistry. Furthermore, total renal tissue ACE2 activity was measured using a fluorimetric assay that was specified by the ACE2 inhibitor DX600. In SHRSP and homozygous TGR(mREN2)27 rats with established hypertension, kidney ACE2 mRNA, protein and tissue ACE2 activities were not different from their respective WKY and SD reference strain, respectively. In addition, when we looked at renal localization, we found ACE2 protein to be predominantly present in glomeruli and endothelium with weak staining in distal and negative staining in proximal tubuli. Thus, our data challenge previous work that implicates ACE2 as a candidate gene for hypertension in SHRSP by reporting a significant reduction of ACE2 in the kidneys of SHRSP. Taken together, renal ACE2 is not altered in the SHRSP and TGR(mREN2)27 genetic rat models with established hypertension.
Authors:
Jelena Kamilic; Inge Hamming; Reinhold Kreutz; Juliane Bolbrinker; Wolf-Eberhard Siems; Ibrahim Nassar; Judith C Sluimer; Thomas Walther; Gerjan J Navis; Harry van Goor
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-11-20
Journal Detail:
Title:  Hypertension research : official journal of the Japanese Society of Hypertension     Volume:  33     ISSN:  1348-4214     ISO Abbreviation:  Hypertens. Res.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-02-08     Completed Date:  2010-04-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9307690     Medline TA:  Hypertens Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  123-8     Citation Subset:  IM    
Affiliation:
Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. j.kamilic@path.umcg.nl
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MeSH Terms
Descriptor/Qualifier:
Animals
Hypertension / enzymology*
Immunohistochemistry
Kidney / enzymology*
Peptidyl-Dipeptidase A / analysis,  genetics,  physiology*
RNA, Messenger / analysis
Rats
Rats, Inbred SHR
Rats, Inbred WKY
Rats, Sprague-Dawley
Renin / genetics*
Chemical
Reg. No./Substance:
0/RNA, Messenger; 0/Ren2 protein, rat; EC 3.4.15.1/Peptidyl-Dipeptidase A; EC 3.4.17.-/angiotensin converting enzyme 2; EC 3.4.23.15/Renin
Comments/Corrections
Comment In:
Hypertens Res. 2010 Feb;33(2):107-9   [PMID:  20019704 ]

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


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