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Platelet aggregation response and adenosine triphosphate secretion after abdominal total hysterectomy
M Hayashi1, F Kiumi, K Hoshimoto
1Department of Obstetrics and Gynaecology, Koshigaya Hospital, Dokkyo University School of Medicine, Saitama, Japan.
International Journal of Clinical Practice
|August 16, 2003
Summary
Post-surgery, platelet function changes significantly. Platelet aggregation and adenosine triphosphate (ATP) secretion are reduced initially, with altered platelet subpopulations observed.
Area of Science:
- Hematology
- Surgical Research
- Biochemistry
Background:
- Platelet aggregation and adenosine triphosphate (ATP) secretion are crucial for hemostasis.
- Surgical procedures can impact platelet function and circulating platelet populations.
Purpose of the Study:
- To investigate the quantitative relationship between platelet aggregation and ATP secretion following abdominal total hysterectomy.
- To characterize changes in platelet structure and function at different postoperative time points.
Main Methods:
- Blood samples collected from 41 patients before, 1 day after, and 2 weeks after surgery.
- Platelet aggregation and ATP secretion measured using a lumi-aggregometer with adenosine diphosphate (ADP) and collagen.
- Platelet ultrastructure analyzed via electron microscopy.
Main Results:
- Collagen-induced platelet aggregation decreased significantly 1 day post-surgery.
- ADP-induced aggregation increased 2 weeks post-surgery compared to baseline and 1 day post-surgery.
- ATP secretion and aggregation correlation coefficients were lower 1 day post-surgery, with reduced platelet granule concentrations observed.
Conclusions:
- Post-surgery, circulating platelets are consumed and potentially altered, leading to reduced aggregation and ATP secretion.
- The remaining platelets exhibit different subpopulations with diminished granule content and altered aggregation-ATP secretion coupling.