title: Platelet cryopreservation with glycerol, dextran, and mannitol: recovery of 5-hydroxytryptamine uptake and hypotonic stress response.
abstract: Human platelets were frozen in 0.5 M glycerol, 0.5 M glycerol + 3% Dextran T40, or 0.5 M glycerol + 5% mannitol. The recovery of active transport of 5-hydroxytryptamine (5-HT) and the hypotonic stress response after freezing were dependent on the rate of cooling: the optimum range of rates was between 12 and 23 degrees C/min. The numerical recovery of cells was independent of cooling rate, but freezing altered the cell-size distribution. The combination of dextran and glycerol was no better than glycerol alone at protecting platelets against freezing damage. Mannitol, however, adversely affected platelet 5-HT uptake, and this was reflected in a low recovery of that activity after freezing platelets in glycerol supplemented with mannitol.
authors.forename: U A
authors.initials: UA
authors.lastname: Brodthagen
authors.forename: W J
authors.initials: WJ
authors.lastname: Armitage
authors.forename: N
authors.initials: N
authors.lastname: Parmar
mesh_terms: D001693:Biological Transport, Active; D001792:Blood Platelets / Q000378:metabolism; D001793:Blood Preservation / Q000379:methods*; D003911:Dextrans; D005615:Freezing; D005990:Glycerol; D006801:Humans; D066298:In Vitro Techniques; D008353:Mannitol; D009997:Osmotic Pressure; D012701:Serotonin / Q000097:blood
chemical_list: D003911:Dextrans; D012701:Serotonin; D008353:Mannitol; D005990:Glycerol