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en Resveratrol; a Double-Edged Sword Antioxidant Agent for Preserving Platelet Cell Functions During Storage; Molecular Insights زیست شناسی سلولی Cell Biology مقالات اصلی Original Article Background: In the current study we have aimed to find the effects of Resveratrol treatment on platelet concentrates (PCs) at the dose dependent manner. We have also attempted to find the molecular mechanism of the effects. Methods: The PCs, have received from Iranian blood transfusion organization (IBTO). Totally 10 PCs were studied. The PCs divided into 4 groups including untreated (control) and treated by different dose of Resveratrol; 10, 30 and 50 µM. Platelet aggregation and total reactive oxygen species (ROS) levels were evaluated at day 3 of PCs storage. In silico analysis was carried out to find out the potential involved mechanisms. Results: The aggregation against collagen has fallen dramatically in all studied groups but at the same time, aggregation was significantly higher in the control versus treated groups (p<0.05). The inhibitory effect was dose dependent. The aggregation against Ristocetin did not significantly affect by Resveratrol treatment. The mean of total ROS significantly increased in all studied groups except those PCs treated with 10 µM of Resveratrol (P=0.9). The ROS level significantly increased with increasing Resveratrol concentration even more than control group (slope=11.6, P=0.0034). Resveratrol could potently interact with more than 15 different genes which, 10 of them enrolled in cellular regulation of the oxidative stress. Conclusions: Our findings indicated that the Resveratrol affect the platelet aggregation at the dose dependent manner. Moreover, we have also found that the Resveratrol play as double-edged sword in the controlling oxidative state of the cells. Therefore, Using the optimal dose of Resveratrol is the great of importance.   Aggregation, Oxidative stress, Platelet storage lesion, Resveratrol. 553 564 http://rbmb.net/browse.php?a_code=A-10-1016-1&slc_lang=en&sid=1 Abbas Khosravi 100319475328460016777 100319475328460016777 No Blood Transfusion Research center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Mohammad Reza Deyhim mrdeyhim@yahoo.com. 100319475328460016778 100319475328460016778 Yes Blood Transfusion Research center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Fatemeh Yari 100319475328460016779 100319475328460016779 No Blood Transfusion Research center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Mahin Nikougoftar Zarif 100319475328460016780 100319475328460016780 No Blood Transfusion Research center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.