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- W4313597948 abstract "Doxorubicin (Dox) is a widely used clinical drug whose cardiotoxicity cannot be ignored. Pyroptosis (inflammatory cell death) has gradually gained attention in the context of Dox-induced cardiotoxicity. In addition to the inhibition of platelet activation by ticagrelor, little is known about its other pharmacological effects. Glycogen synthase kinase 3β (GSK-3β) has been shown to contribute to the pathological process of pyroptosis, but whether it is related to the potential role of ticagrelor is unclear. In this study, we investigated the effects of ticagrelor on Dox-induced pyroptosis in cardiomyocytes. Rats were treated with ticagrelor (7.5 mg/kg, i.g.) 1 h before intravenous injection of Dox (2.5 mg/kg), once every 3 days, six times in total. Hearts were collected for histochemical analysis and western blot detection 8 weeks after the last administration. Ticagrelor was shown to significantly improve cardiac function by inhibiting GSK-3β/caspase-1/GSDMD activation. In vitro experiments were conducted using rat cardiac myocytes (RCMs) and rat embryonic cardiac-derived H9c2 cells. Pretreatment with ticagrelor (10 μm) significantly inhibited Dox (1 μm)-induced hypertrophy and reversed the upregulation of GSDMD-NT expression. We showed that ticagrelor suppressed the activation of Akt caused by Dox in the heart tissue as well as in RCMs/H9c2 cells caused by Dox. When GSK-3β expression was absent in H9c2 cells, the inhibitory effect of ticagrelor on Dox-induced caspase-1/GSDMD activation was weakened. These data showed that ticagrelor reduced Dox-induced pyroptosis in rat cardiomyocytes by targeting GSK-3β/caspase-1." @default.
- W4313597948 created "2023-01-06" @default.
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- W4313597948 date "2023-01-06" @default.
- W4313597948 modified "2023-09-27" @default.
- W4313597948 title "Ticagrelor reduces doxorubicin-induced pyroptosis of rat cardiomyocytes by targeting GSK-3β/caspase-1" @default.
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- W4313597948 doi "https://doi.org/10.3389/fcvm.2022.1090601" @default.
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