Abstract:
BACKGROUND/AIM:In addition to its cholesterol-lowering effect, atorvastatin (ATV) has been thought to have multiple cardiovascular benefits, including anti-inflammatory and anti-apoptotic properties. The present study was undertaken to determine whether ATV pretreatment could attenuate myocardial apoptosis and inflammation and improve cardiac function in a swine model of coronary microembolization (CME). METHODS:Twenty-four swine were randomly and equally divided into a sham-operated (control) group, CME group, and CME plus ATV group. Swine CME was induced by intracoronary injection of inert plastic microspheres (diameter 42 μm) into the left anterior descending coronary, with or without pretreatment of ATV. Echocardiographic measurements, a pathological examination, terminal deoxynucleotidyl transferase-mediated nick end labeling staining, and Western blotting were performed to assess the functional, morphological, and molecular effects in CME. RESULTS:The expression levels of caspase 3 and tumor necrosis factor-α (TNF-α) were aberrantly upregulated in cardiomyocytes following CME. Downregulation of caspase 3 and TNF-α with ATV pretreatment was associated with improved cardiac function and attenuated serum cardiac troponin I (cTnI) and high-sensitivity C-reactive protein. In addition, through a Pearson correlation analysis, the left ventricular ejection fraction negatively correlated with caspase 3, TNF-α, and cTnI. CONCLUSION:This study demonstrated that ATV pretreatment could significantly inhibit CME-induced myocardial apoptosis and inflammation and improve cardiac function. The data generated from this study provide a rationale for the development of myocardial apoptosis and inflammation-based therapeutic strategies for CME-induced myocardial injury.
journal_name
J Cardiovasc Pharmacol Therjournal_title
Journal of cardiovascular pharmacology and therapeuticsauthors
Wang JY,Chen H,Su X,Zhou Y,Li Ldoi
10.1177/1074248416662348subject
Has Abstractpub_date
2017-03-01 00:00:00pages
189-195issue
2eissn
1074-2484issn
1940-4034pii
1074248416662348journal_volume
22pub_type
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