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Effects of renal sympathetic denervation and angiotensin-converting enzyme inhibitor on left ventricular hypertrophy : Comparison in spontaneously hypertensive rats.
MedLine Citation:
PMID:  24924395     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: The aim of this study was to investigate whether renal sympathetic denervation (RSD) is more effective on myocardial hypertrophy than the angiotensin-converting enzyme inhibitor (ACEI) perindopril in spontaneously hypertensive rats (SHRs).
METHODS: After bilateral renal denervation blood pressure (BP) was measured every 10 days. On day 50 the heart was (histo)pathologically examined. The ventricular weight to body weight ratios (VW/BW), myocardial diameter and collagen volume fraction (CVF) were calculated, and cardiac hypertrophy marker genes were analyzed by RT-PCR.
RESULTS: At the baseline evaluation all groups had comparable BP. After treatment the BP of the RSD group was significantly reduced (p < 0.05). The BP of the RSD group was lower than that of the perindopril group on days 10, 20 and 30th (p < 0.05) but on day 50 systolic BP of the RSD group was significantly higher (p < 0.05) whereas there were no significant differences in diastolic BP. The VW/BW decreased in the RSD group, whereas the value did not change significantly in the perindopril group. The myocardial diameter of the left ventricular cardiomyocytes was also significantly lower in the RSD group and stayed the same in the perindopril group. Collagen volume fraction (CVF) in the RSD group was significantly lower than in the perindopril group (p < 0.05). Significant changes in the expression levels of NPPA, MYH7, and MYH6 (P < 0.05) were observed in the RD-SHR groups (p < 0.05). There was a significant difference in the expression level of MYH6 (p < 0.05) between the RSD group and the perindopril group but the expression levels of NPPA and MYH7 were not significantly different.
CONCLUSION: In this study, RSD had a significant antihypertensive effect and inhibited hypertensive-induced cardiac hypertrophy in SHRs and showed advantages compared with ACEI in decreasing BP in the early stage and in inhibiting myocardial fibrosis.
Authors:
X Ding; X Xu; Y Yan; X Song; S Liu; G Wang; D Su; Q Jing; Y Qin
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-6-14
Journal Detail:
Title:  Herz     Volume:  -     ISSN:  1615-6692     ISO Abbreviation:  Herz     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-6-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7801231     Medline TA:  Herz     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Vernacular Title:
Auswirkungen der renalen Sympathikusdenervation und eines Angiotensin-converting-Enzym-Hemmers auf die linksventrikuläre Hypertrophie : Vergleich bei Ratten mit spontan aufgetretener Hypertonie.
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