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[Change in factor XIII activity in plasma during thrombocyte aggregation]
Biulleten' Eksperimental'Noi Biologii I Meditsiny
|July 1, 1975
Summary
Active factor XIII (XIIIa) reduced its own plasma activity and altered platelet aggregation. This effect varied with different aggregating agents like ADP and thrombin, suggesting complex interactions.
Area of Science:
- Biochemistry
- Hematology
- Platelet Biology
Context:
- Factor XIII is crucial for hemostasis.
- Platelet aggregation is a key process in blood clotting.
- The role of active factor XIII (XIIIa) in platelet aggregation is not fully understood.
Purpose:
- To investigate the effect of active factor XIII (XIIIa) on platelet aggregation induced by ADP and thrombin.
- To determine if inactive factor XIII influences these processes.
- To elucidate the interaction between XIIIa and aggregating agents.
Summary:
- Addition of active factor XIII (XIIIa) to rat plasma increased ADP-induced platelet aggregation but decreased XIIIa activity.
- Inactive factor XIII had no significant effect on aggregation or XIIIa activity.
- Thrombin-induced aggregation decreased in the presence of XIIIa, with a marked fall in XIIIa activity, indicating interaction with thrombin.
Impact:
- Highlights the complex regulatory role of XIIIa in platelet function.
- Suggests XIIIa may modulate thrombin's pro-aggregatory effects.
- Provides insights into the interplay between coagulation factors and platelet activation pathways.