Matches in SemOpenAlex for { <https://semopenalex.org/work/W4366258458> ?p ?o ?g. }
- W4366258458 abstract "Abstract For decades, it was considered that plasma kallikrein's (PKa) sole function within the coagulation cascade is the activation of factor (F)XII. Until recently, the two key known activators of FIX within the coagulation cascade were activated FXI(a) and the tissue factor–FVII(a) complex. Simultaneously, and using independent experimental approaches, three groups identified a new branch of the coagulation cascade, whereby PKa can directly activate FIX. These key studies identified that (1) FIX or FIXa can bind with high affinity to either prekallikrein (PK) or PKa; (2) in human plasma, PKa can dose dependently trigger thrombin generation and clot formation independent of FXI; (3) in FXI knockout murine models treated with intrinsic pathway agonists, PKa activity results in increased formation of FIXa:AT complexes, indicating direct activation of FIX by PKa in vivo. These findings suggest that there is both a canonical (FXIa-dependent) and non-canonical (PKa-dependent) pathway of FIX activation. These three recent studies are described within this review, alongside historical data that hinted at the existence of this novel role of PKa as a coagulation clotting factor. The implications of direct PKa cleavage of FIX remain to be determined physiologically, pathophysiologically, and in the context of next-generation anticoagulants in development." @default.
- W4366258458 created "2023-04-20" @default.
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- W4366258458 date "2023-04-18" @default.
- W4366258458 modified "2023-10-12" @default.
- W4366258458 title "Plasma Kallikrein as a Forgotten Clotting Factor" @default.
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- W4366258458 doi "https://doi.org/10.1055/s-0043-57034" @default.
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