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Can hypertonic saline influence platelet P selectin expression and platelet-leukocyte aggregation?
Go-Shine Huang1, Mei-Hua Hu, Chian-Her Lee
1Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Nei-Hu, Taipei 114, Taiwan.
The American Journal of Emergency Medicine
|December 17, 2009
Summary
High concentrations of hypertonic saline inhibit platelet-leukocyte aggregation and P-selectin expression in vitro. These effects were observed at supratherapeutic doses, suggesting minimal impact at typical therapeutic levels.
Area of Science:
- Hematology
- Physiology
- Pharmacology
Background:
- Platelet activation is crucial for hemostasis and thrombosis.
- Platelet activation involves P-selectin expression and aggregation with leukocytes.
- Hypertonic saline is known to inhibit platelet aggregation, but its effect on activation is unclear.
Purpose of the Study:
- To investigate the in vitro effects of hypertonic saline on platelet activation.
- To measure P-selectin expression and platelet-leukocyte aggregation following hypertonic saline exposure.
Main Methods:
- Blood samples from healthy volunteers were treated with varying concentrations of saline solutions.
- Diluted blood samples were activated with adenosine diphosphate.
- Platelet P-selectin expression and platelet-leukocyte aggregation were analyzed using flow cytometry.
Main Results:
- 23.5% saline significantly reduced P-selectin expression and platelet-leukocyte aggregation at higher dilutions (20-30%).
- 7.5% saline inhibited platelet-leukocyte aggregation only at a 30% dilution.
- Other tested solutions did not affect platelet activation markers.
Conclusions:
- Hypertonic saline does not impact platelet activation markers at therapeutic plasma concentrations.
- Inhibitory effects on platelet activation occur at supratherapeutic doses of hypertonic saline.
- Other tested solutions demonstrated minimal interference with platelet activation.
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