Demeanor of rivaroxaban in activated/inactivated FXa

Journal of Pharmacological Sciences

Toku Sakashita¹  Jun Tanno¹  Takaaki Senbonmatsu¹  Kaname Seki¹  Toshihiro Muramatsu¹  Shintaro Nakano¹  Shigeyuki Nishimura¹  Yosuke Mizuno²  Yasushi Okazaki² 

[1] Department of Cardiology, Saitama Medical University, International Medical Center, Saitama, Japan;Division of Functional Genomics & Systems Medicine, Saitama Medical University Research Center for Genomic Medicine, Saitama, Japan;

关键词: Activated factor X;    Anticoagulant;    Inflammation;    Rivaroxaban;    Gene modulation;   

DOI  :  10.1016/j.jphs.2017.02.010

来源: DOAJ

【 摘 要 】

Activated factor X (FXa) plays an important role in thrombin generation and inflammation. Factor X is not converted constitutively to FXa, but only after intrinsic clotting factors are activated and/or cellular injury occurs. Although rivaroxaban is one of direct FXa inhibitors, its function in the inactivated coagulation cascade is unclear. In human umbilical vein endothelial cells that natively express protease-activated receptor-1 and -2, high dose rivaroxaban did not alter gene transcripts including pro-inflammatory genes in DNA microarray. Upon FXa stimulation, the expressions of pro-inflammatory genes such as monocyte chemoattractant protein-1 (MCP-1), intracellular adhesion molecule-1, and interleukin-8 were maximally increased at 4 h after stimulation, and were suppressed by rivaroxaban. To confirm these results, quantitative polymerase chain reaction and enzyme-linked immunosorbent assay (ELISA) for MCP-1 were performed. FXa evoked the expression of MCP-1 maximally at 4 h after stimulation, whereas MCP-1 displayed a different temporal activation in ELISA. Interestingly, rivaroxaban inhibited both time courses of MCP-1 expression. These results suggest that rivaroxaban may not influence gene modulation in the inactivated coagulation state, but can attenuate the endothelial damage evoked by FXa and pro-inflammatory cytokine genes.

【 授权许可】

Unknown