Document Detail

Olmesartan attenuates cardiac hypertrophy and improves cardiac diastolic function in spontaneously hypertensive rats through inhibition of calcineurin pathway.
MedLine Citation:
PMID:  24603116     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To test whether olmesartan ameliorates cardiac diastolic dysfunction in spontaneously hypertensive rats (SHRs) through calcineurin pathway.
METHODS: Twenty-four male SHRs of 6 months were divided into saline- (n = 12) and olmesartan-treated (n = 12) groups. Age-matched WKY (n = 12) rats served as controls. Saline (10 mL·kg·d) or the same volume of olmesartan liquor (2.5 mg·kg·d) was administered by gavage for 3 months. Heart rate, systolic blood pressure, cardiac structure, and function and histological studies were determined. Expression of calcineurin and downstream NFAT3 were also detected.
RESULTS: Compared with age-matched Wistar Kyoto rats, SHRs of 6 months exhibited evident cardiac hypertrophy and diastolic dysfunction as demonstrated by elevated systolic blood pressure and E/E', decreased E/A and E'/A', while F, left ventricular ejection fraction and fractional shortening remained unimpaired. Treatment with olmesartan significantly decreased systolic blood pressure and ventricular hypertrophy, attenuated fibrosis, and improved diastolic function (all P < 0.05). Meanwhile, both calcineurin and NFAT3 expressions were downregulated in olmesartan group compared with the other 2 groups (both P < 0.05).
CONCLUSIONS: These data suggest the beneficial effect of olmesartan on cardiac structure and diastolic dysfunction, and it may be mediated through calcineurin pathway. This indicates a new therapeutic target for diastolic dysfunction.
Mingqiang Fu; Jingmin Zhou; Jianfeng Xu; Hongmin Zhu; Jianquan Liao; Xiaotong Cui; Aijun Sun; Michael Fu; Yunzeng Zou; Kai Hu; Junbo Ge
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cardiovascular pharmacology     Volume:  63     ISSN:  1533-4023     ISO Abbreviation:  J. Cardiovasc. Pharmacol.     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-03-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7902492     Medline TA:  J Cardiovasc Pharmacol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  218-26     Citation Subset:  IM    
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