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Some effects of propane-1,2-diol on human platelets
F G Arnaud1, C J Hunt, D E Pegg
1MRC Medical Cryobiology Group, University Department of Surgery, Cambridge, United Kingdom.
Cryobiology
|April 1, 1990
Summary
Human platelets can tolerate up to 2 M propane-1,2-diol (propylene glycol, PG) at low temperatures for short durations. This research is crucial for developing effective platelet cryopreservation methods using PG.
Area of Science:
- Biotechnology
- Cell Biology
- Cryobiology
Background:
- Platelet preservation is vital for transfusion medicine.
- Propane-1,2-diol (PG) is a potential cryoprotective agent for platelets.
- Understanding PG's effects on platelets is essential for cryopreservation.
Purpose of the Study:
- To design methods for adding and removing PG from human platelets.
- To determine the tolerance limits of human platelets to PG exposure.
- To evaluate the impact of PG concentration, temperature, and exposure time on platelet function.
Main Methods:
- Utilized Kedem-Katchalsky equations and prior permeability data.
- Studied PG concentrations from 0.5 to 3.0 M at 2, 21, and 37°C.
- Assessed platelet volume, hypotonic stress response, and ADP-induced aggregation.
Main Results:
- Human platelets tolerated PG concentrations up to 2 M at 2°C or 21°C for up to 15 minutes.
- Platelet volume remained within the acceptable range (60-120% of normal).
- Increased temperature and PG concentration led to significant platelet damage.
Conclusions:
- Established safe parameters for PG addition and removal in human platelets.
- Demonstrated that low temperatures and limited exposure times are critical for PG tolerance.
- Provided foundational data for cryopreserving human platelets using PG.