PMID- 25873361 OWN - NLM STAT- MEDLINE DCOM- 20151215 LR - 20150916 IS - 1537-2995 (Electronic) IS - 0041-1132 (Linking) VI - 55 IP - 9 DP - 2015 Sep TI - In vitro study of platelet function confirms the contribution of the ultraviolet B (UVB) radiation in the lesions observed in riboflavin/UVB-treated platelet concentrates. PG - 2219-30 LID - 10.1111/trf.13123 [doi] AB - BACKGROUND: Platelet inactivation technologies (PITs) have been shown to increase platelet storage lesions (PSLs). This study investigates amotosalen/ultraviolet (UV)A- and riboflavin/UVB-induced platelet (PLT) lesions in vitro. Particular attention is given to the effect of UVB alone on PLTs. STUDY DESIGN AND METHODS: Buffy coat-derived PLT concentrates (PCs) were treated with amotosalen/UVA, riboflavin/UVB, or UVB alone and compared to untreated PCs throughout storage. In vitro PLT function was assessed by blood gas and metabolite analyses, flow cytometry-based assays (CD62P, JC-1, annexin V, PAC-1), hypotonic shock response, and static adhesion to fibrinogen-coated wells. RESULTS: In our experimental conditions, riboflavin/UVB-treated PCs showed the most pronounced differences compared to untreated and amotosalen/UVA-treated PCs. The riboflavin/UVB treatment led to a significant increase of anaerobic glycolysis rate despite functional mitochondria, a significant increase of CD62P on Day 2, and a decrease of JC-1 aggregates and increase of annexin V on Day 7. The expression of active GPIIbIIIa (PAC-1) and the adhesion to fibrinogen was significantly increased from Day 2 of storage in riboflavin/UVB-treated PCs. Importantly, we showed that these lesions were caused by the UVB radiation alone, independently of the presence of riboflavin. CONCLUSION: The amotosalen/UVA-treated PCs confirmed previously published results with a slight increase of PSLs compared to untreated PCs. Riboflavin/UVB-treated PCs present significant in vitro PSLs compared to untreated PCs. These lesions are caused by the UVB radiation alone and probably involve the generation of reactive oxygen species. The impact of these observations on clinical use must be investigated. CI - (c) 2015 AABB. FAU - Abonnenc, Melanie AU - Abonnenc M AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. FAU - Sonego, Giona AU - Sonego G AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. FAU - Crettaz, David AU - Crettaz D AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. FAU - Aliotta, Alessandro AU - Aliotta A AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. FAU - Prudent, Michel AU - Prudent M AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. FAU - Tissot, Jean-Daniel AU - Tissot JD AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. FAU - Lion, Niels AU - Lion N AD - Laboratoire de Recherche sur les Produits Sanguins Epalinges, Transfusion Interregionale CRS, Epalinges, Switzerland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150415 PL - United States TA - Transfusion JT - Transfusion JID - 0417360 RN - 0 (Annexin A5) RN - 0 (Furocoumarins) RN - 0 (P-Selectin) RN - 0 (SELP protein, human) RN - EC 3.1.3.48 (DUSP2 protein, human) RN - EC 3.1.3.48 (Dual Specificity Phosphatase 2) RN - K1LDZ0VBC0 (amotosalen) RN - TLM2976OFR (Riboflavin) SB - IM MH - Annexin A5/metabolism MH - Blood Buffy Coat/metabolism/pathology MH - Blood Platelets/*metabolism/pathology MH - *Blood Preservation MH - Dual Specificity Phosphatase 2/metabolism MH - Female MH - *Flow Cytometry MH - Furocoumarins/blood MH - *Glycolysis/drug effects/radiation effects MH - Humans MH - Male MH - Osmotic Pressure/drug effects/radiation effects MH - P-Selectin/metabolism MH - Platelet Function Tests MH - Riboflavin/*pharmacology MH - Time Factors MH - *Ultraviolet Rays EDAT- 2015/04/16 06:00 MHDA- 2015/12/17 06:00 CRDT- 2015/04/16 06:00 PHST- 2014/09/04 00:00 [received] PHST- 2015/02/24 00:00 [revised] PHST- 2015/02/28 00:00 [accepted] PHST- 2015/04/16 06:00 [entrez] PHST- 2015/04/16 06:00 [pubmed] PHST- 2015/12/17 06:00 [medline] AID - 10.1111/trf.13123 [doi] PST - ppublish SO - Transfusion. 2015 Sep;55(9):2219-30. doi: 10.1111/trf.13123. Epub 2015 Apr 15.