کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1927348 1536512 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strong cardioprotective effect of resveratrol, a red wine polyphenol, on isolated rat hearts after ischemia/reperfusion injury
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Strong cardioprotective effect of resveratrol, a red wine polyphenol, on isolated rat hearts after ischemia/reperfusion injury
چکیده انگلیسی

We have studied some hemodynamic parameters as heart rate (HR) developed pressure (DP) and maximal positive values of the first derivative of pressure (+dP/dt max) in isolated heart from control or resveratrol treated rats. In acute ex vivo experiments, resveratrol (1–100 μM) infusion in Langendorff perfused hearts did not affect contractile function in either normoxic conditions or after ischemia/reperfusion. However when semi-chronically administered by IP injection during 7 days, resveratrol which had no effect on pre-ischemic heart greatly improved post-ischemic indexes of myocardial function. Resveratrol effect is dose-dependent and seemed optimal at a plasma level of 18.5 μM. This concentration is very close to that previously shown to be optimal and non-toxic by others. These beneficial effects of resveratrol are only partly explained by its antioxidant properties as suggested by the lack of any dose–response effect on tissue malondialdehyde (MDA) levels. They are also clearly not mediated by nitric oxide (NO) elevation. When acutely infused resveratrol had no beneficial effect and therefore could not be proposed in acute scenarios of ischemia/reperfusion or stroke. However resveratrol appeared as an efficient and promising molecule in the prevention of heart dysfunction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Archives of Biochemistry and Biophysics - Volume 457, Issue 1, 1 January 2007, Pages 1–6
نویسندگان
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