1,25‐Dihydroxyvitamin D3 attenuates platelet aggregation potentiated by SARS‐CoV‐2 spike protein via inhibiting integrin αIIbβ3 outside‐in signaling

Platelet hyperreactivity contributes to the pathogenesis of COVID-19, which is associated with a hypercoagulability state and thrombosis disorder. It has been demonstrated that Vitamin D deficiency is associated with the severity of COVID-19 infection. Vitamin D supplement is widely used as a dietary supplement due to its safety and health benefits. In this study, we investigated the direct effects and underlying mechanisms of 1,25(OH)