Key result
Simvastatin treatment for 2 weeks significantly hastened the rate of cardiac myocyte relaxation (time to half relaxation 0.108 s vs 0.144 s, p<0.001) in association with increased phosphorylation of troponin I.
Why the study?
Does simvastatin improve cardiac myocyte relaxation in normocholesterolemic rats?
Population
Adult male Wistar rats and human right atrial samples from male patients without diabetes undergoing…
Comparison
Simvastatin 40 mg/kg/day administered by oral… vs Equivalent volumes of saline administered by…
Design
Preclinical
Follow-up
14 days
Authors
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Simvastatin may directly enhance myocyte relaxation; leaves open clinical relevance amid rising statin use and unresolved toxicity concerns.
Does simvastatin improve cardiac myocyte relaxation in normocholesterolemic rats?
Absolute Event Rate: 0.108% vs 0.144%
p-value: p=<0.001
Chronic simvastatin treatment enhances cardiac myocyte relaxation (lusitropy) through increased NO bioavailability and troponin I phosphorylation, suggesting a potential beneficial effect on diastolic function.
MacDougall et al. (2017) studied Coronary artery disease (humans) / Normocholesterolemic (rats) (n=37). Simvastatin vs. Saline (rats) / No statin (humans) was evaluated on Time to half (t0.5) relaxation of cardiac myocytes (seconds) (p=<0.001). Simvastatin treatment for 2 weeks significantly hastened the rate of cardiac myocyte relaxation (time to half relaxation 0.108 s vs 0.144 s, p<0.001) in association with increased phosphorylation of troponin I.
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