Zhongguo shi yan xue ye xue za zhi / Zhongguo bing li sheng li xue hui = Journal of experimental hematology / Chinese Association of Pathophysiology 2019-Aug
[Angelica Polysaccharide Resists Platelets Apoptosis Induced by LY294002].
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To investigate the anti-apoptotic effect of Angelica polysaccharide (APS) on cryopreservated platelets and its mechanism.The platelets were divided into 4 group: control group(4 ℃ stored platelets),APS group (APS-treated platelets stored at 4 ℃), LY294002 group (LY294002-treated platelets stored at 4 ℃) and LY294002+APS group(LY294002+APS treated platelets stored at 4 ℃ ). The expression of platelet membrane glycoprotein CD41 and CD61, as well as the platelet apoptotic rate, Caspase 3 expression and mitochondrial membrane potential (MMP) were detected by flow cytometry; the anti-apoptotic mechanism of APS by PI3K /AKT signaling pathway was analyzed by Western blot assay.The apoptosis rate of platelets in LY294002 group obviously increased, the activity of CD41 and CD61 expression gradually decreased along with the enhancement of LY294002 concentrations (r=-0.953); compared with control group, the apoptosis rate of platelets in LY294002 group was enhanced significantly(P<0.05),while the apoptosis rate of platelets in LY294002+APS group significantly was reduced(P<0.05) as compare with LY294002 group, which suggest that APS has an anti-apoptotic effect on the cryopreserved platelets. APS decreased the expression of Caspase-3 and inhibited the reduction of mitochondrial membrane potential induced by LY294002, moreover, APS could increase the activation of PI3K /AKT pathway in Plt.APS has an anti-apoptotic effect on the cryopreserved platelets through activating the PI3K /AKT pathway, decreasing the expression of apoptosis protease Caspase-3 and inhibiting the reduction of MMP.
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