title: Lysophosphatidylcholines: bioactive lipids generated during storage of blood components.
abstract: Transfusion-related acute lung injury (TRALI) is suggested to be a "two hit" event, resulting from priming and activation of pulmonary neutrophils. It is known that neutrophil activation may result from infusion of lysophosphatidylcholines (LysoPCs) accumulated during storage of blood components. The aim of our study was to verify whether the LysoPCs are released into the storage medium of blood components. We measured the LysoPCs concentration in the supernatants from stored apheresis platelet concentrates (PLTs), packed non-leukoreduced red blood cell concentrates (RBCs), leukoreduced red blood cell concentrates (L-RBCs), fresh frozen plasma (FFP) and donor plasma (control). Lipids were separated on high-performance thin-layer chromatography, detected by primulin spray and quantified by photodensitometric scanning. The LysoPCs concentration in donor plasma was similar to that in FFP. During storage the LysoPCs content in PLTs increased almost two-fold as compared to the fresh isolated platelets. In RBCs and L-RBCs the LysoPC level was very low or below detection limit and did not increase throughout the storage period. According to our observations bioactive LysoPCs may be considered a neutrophil-activating factor only following PLT transfusions but not RBCs transfusions.
authors.affiliation: Department of Immunohaematology and Immunology of Transfusion Medicine, Institute of Haematology and Transfusion Medicine, Warsaw, Poland. kmaslanka@ihit.waw.pl
authors.forename: Krystyna
authors.initials: K
authors.lastname: Maślanka
authors.forename: Gabriela
authors.initials: G
authors.lastname: Smoleńska-Sym
authors.forename: Halina
authors.initials: H
authors.lastname: Michur
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Wróbel
authors.forename: Elżbieta
authors.initials: E
authors.lastname: Lachert
authors.forename: Ewa
authors.initials: E
authors.lastname: Brojer
mesh_terms: D055371:Acute Lung Injury / Q000209:etiology* / Q000276:immunology*; D001793:Blood Preservation / Q000009:adverse effects*; D006801:Humans; D008055:Lipids / Q000737:chemistry / Q000502:physiology*; D008244:Lysophosphatidylcholines / Q000737:chemistry / Q000378:metabolism*; D018375:Neutrophil Activation / Q000276:immunology; D065227:Transfusion Reaction
chemical_list: D008055:Lipids; D008244:Lysophosphatidylcholines