Related Experiment Videos
Two forms of alpha 2-antiplasmin: post-traumatic changes in the rat
Upsala Journal of Medical Sciences
|January 1, 1987
Summary
Alpha 2-antiplasmin (AP) levels shift after trauma, with plasminogen-binding AP (PB-AP) increasing initially. This dynamic change in AP forms helps maintain stable total AP despite altered fibrinolysis inhibition.
Area of Science:
- Biochemistry
- Physiology
- Immunology
Background:
- Alpha 2-antiplasmin (AP) is a key inhibitor of fibrinolysis.
- AP exists in plasminogen-binding (PB-AP) and non-plasminogen-binding (NPB-AP) forms.
- Understanding AP form dynamics is crucial for interpreting fibrinolysis regulation.
Purpose of the Study:
- To quantify changes in PB-AP and NPB-AP levels following trauma.
- To investigate the impact of trauma on total AP concentration.
- To correlate AP form shifts with fibrinolysis inhibition.
Main Methods:
- Modified rocket immunoelectrophoresis was used to assay AP forms.
- Rat plasma samples were analyzed pre-trauma and up to 48 hours post-turpentine induction.
- An intermediary gel with plasminogen kringles 1-3 was employed.
Main Results:
- PB-AP significantly increased by 22% at 24 hours post-trauma.
- NPB-AP decreased at 24 hours, resulting in unchanged total AP.
- Total AP increased by 57% between 24-48 hours, primarily due to NPB-AP increase.
Conclusions:
- Plasma AP levels can remain stable despite increased fibrinolysis inhibition.
- A relative increase in the more active PB-AP contributes to this stability.
- Trauma induces dynamic alterations in AP forms, impacting fibrinolysis regulation.