Induction of atrial endothelial senescence by angiotensin II and thrombin : role of oxidative stress and characterization of pro-thrombotic, pro-adhesive, proteolytic and pro-fibrotic phenotype

Abstract : Many studies documented strong relationship between ageing and development of atrial fibrillation (AF). Moreover, it has been found that senescence and senescence-associated- secretory-phenotype play an important role in development of overall atrial inflammation which can ultimately ends up in atrial structural remodeling paving the way to AF perpetuation and maintenance. Moreover, it has been known for decades that AF has been associated with the activation of local and circulating coagulation factors. However, little is known about the impact of coagulation-derived factors, in particular thrombin, on the onset of AF. The aim of the present study was to determine the link between atrial endothelial cells (AECs) senescence and the induction of pro-inflammatory, pro-adhesive, pro-fibrotic and pro-remodelling AECs patterns and also to evaluate the contribution of coagulation derived-factors such as thrombin.
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Hira Hasan. Induction of atrial endothelial senescence by angiotensin II and thrombin : role of oxidative stress and characterization of pro-thrombotic, pro-adhesive, proteolytic and pro-fibrotic phenotype. Cardiology and cardiovascular system. Université de Strasbourg, 2018. English. ⟨NNT : 2018STRAJ122⟩. ⟨tel-02308916⟩

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