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- W2024034429 abstract "We studied whether Pycnogenol® (PYC) may attenuate the development of experimental streptozotocin-induced diabetic cardiomyopathy in rat. In addition, we aimed to study whether PYC affects cardiac oxidative stress and the protein expression of reactive oxygen species (ROS)-producing molecules (gp91phox-containing NADPH oxidase and NO-signalling proteins). Experimental diabetes mellitus was manifested by hyperglycaemia and impaired cardiac function estimated using left ventricular catheterisation in vivo. PYC lowered fasting plasma glucose and normalized basal cardiac function. Excessive oxidative stress in streptozotocin (STZ) hearts, evidenced by 40% increase (P < 0.05) of thiobarbituric acid reactive substances (TBARS) concentration, was associated with increased expression of gp91phox (by 75%, P < 0.05), iNOS (by 40%, P < 0.05) and alpha-tubulin (by 49%, P < 0.05), but unchanged expression of eNOS and its alosteric regulators, as compared to CON. PYC failed to affect these expression abnormalities. Our study shows that PYC corrects diabetic cardiac dysfunction, probably by its metabolic and direct radical scavenging activity without affecting the molecular maladaptations of ROS-producing enzymes and cytoskeletal components. Copyright © 2009 John Wiley & Sons, Ltd." @default.
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- W2024034429 date "2009-12-02" @default.
- W2024034429 modified "2023-09-27" @default.
- W2024034429 title "Pycnogenol<sup>®</sup>improves left ventricular function in streptozotocin-induced diabetic cardiomyopathy in rats" @default.
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- W2024034429 doi "https://doi.org/10.1002/ptr.3015" @default.
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