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Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes

Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes

Published on: June 3, 2014

Factor XII: form determines function.

S de Maat¹, C Maas¹

¹Department of Clinical Chemistry and Hematology, University Medical Center Utrecht, Utrecht, the Netherlands.

Journal of Thrombosis and Haemostasis : JTH

|June 11, 2016

Summary

Factor XII (FXII), a plasma protein, may play roles in maintaining thrombus stability and regulating vascular permeability. Its exact physiologic function remains under investigation, despite its evolutionary conservation.

Keywords:

blood coagulation bradykinin factor XII plasmin prekallikrein

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Area of Science:

Biochemistry
Hematology
Physiology

Background:

Factor XII (FXII) is a plasma protein with an unclear physiologic role, despite being identified as a clotting factor.
FXII contributes to bradykinin production, an inflammatory peptide, and mechanistic research suggests its involvement in thrombotic diseases via excessive coagulation.
The evolutionary conservation of FXII implies an essential, yet undefined, physiologic function.

Purpose of the Study:

To review biochemical studies on Factor XII (FXII) and its activators.
To propose a conceptual model for FXII's reaction to surface materials.
To discuss potential physiologic functions of FXII in its natural environment.

Main Methods:

Review of existing biochemical studies on Factor XII (FXII).
Development of a conceptual model for FXII-surface interactions.
Discussion of the model's application to FXII's in vivo activities.

Main Results:

Biochemical studies reveal significant insights into the natural behavior of FXII.
A conceptual model illustrates FXII's interaction with various surface materials.
Two potential exclusive physiologic functions for FXII are proposed: thrombus stability and vascular permeability regulation.

Conclusions:

Factor XII (FXII) likely possesses essential physiologic functions, potentially including thrombus stabilization and local vascular permeability control.
These proposed functions may explain the evolutionary persistence of FXII.
Further research is needed to elucidate the precise role of FXII in hemostasis and inflammation.