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  • Title: Cyanidin-3-O-β-D-glucopyranoside concentrated materials from mulberry fruit have a potency to protect erectile function by minimizing oxidative stress in a rat model of diabetic erectile dysfunction.
    Author: Ha US, Koh JS, Kim HS, Woo JC, Kim SJ, Jang H, Yoon BI, Hwang SY, Kim SW.
    Journal: Urol Int; 2012; 88(4):470-6. PubMed ID: 22433441.
    Abstract:
    OBJECTIVE: The aim of this study was to evaluate the effect of cyanidin-3-O-β-D-glucopyranoside (C3G) concentrated materials from mulberry fruit on improvement and protection of erectile function. MATERIALS AND METHODS: Sprague-Dawley rats (12 weeks old) were divided into three groups (n = 12 in each): normal control, diabetes mellitus (DM), and DM with C3G concentrated material treatment (DM + C3G). DM and DM + C3G group rats received a single injection of streptozotocin (50 mg/kg), and 4 weeks after induction of diabetes, the DM + C3G group rats were treated with daily concentrated material treatment (10 mg/kg) dissolved in water for 8 weeks. After 12 weeks of streptozotocin injections, the rats in each group underwent intracavernosal pressure measurement and then the corporal tissues were sampled. RESULTS: The DM group rats showed markedly lower erectile parameters than those in the control group, whereas rats in the DM + C3G group showed improved erectile function by minimizing corporal apoptosis and increasing the expression of endothelial nitric oxide synthase (NOS) and neuronal NOS protein. A significant increase in 8-hydroxy-2-deoxyguanosine (8-OHdG) was shown in the DM group compared with the normal group. However, in the DM + C3G group, 8-OHdG was statistically significantly reduced compared with the DM group. CONCLUSIONS: The current study is the first to suggest that C3G concentrated materials may have a potency to improve and protect erectile function under conditions of diabetes-induced oxidative stress.
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