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ROS scavenger, N‐acetyl‐ l ‐cysteine and NOX specific inhibitor, VAS2870 reduce platelets apoptosis while enhancing their viability during storage
Author(s) -
Hosseini Ehteramolsadat,
Ghasemzadeh Mehran,
Atashibarg Mahtab,
Haghshenas Masood
Publication year - 2019
Publication title -
transfusion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.045
H-Index - 132
eISSN - 1537-2995
pISSN - 0041-1132
DOI - 10.1111/trf.15114
Subject(s) - viability assay , reactive oxygen species , chemistry , platelet , apoptosis , platelet activation , phosphatidylserine , flow cytometry , nadph oxidase , pharmacology , biochemistry , andrology , microbiology and biotechnology , immunology , biology , medicine , phospholipid , membrane
BACKGROUND Platelet storage is often complicated by deleterious changes that are started by reversible activation of the cells and can lead to procoagulant function and apoptosis during longer periods of storage. Given that increasing levels of reactive oxygen species (ROS) generation are associated with platelet activation and apoptosis, our study investigated whether ROS scavenging or the inhibition of ROS production can enhance the viability of stored platelets. METHODS For this study platelet‐rich plasma platelet concentrates (PRP‐PCs) were either treated with ROS‐reducing agents (1 mM N‐acetyl‐ L ‐cysteine [NAC] or 30 μM NADPH oxidase [NOX] inhibitor, VAS2870) or kept untreated during storage. P‐selectin expression, phosphatidylserine (PS) exposure, levels of microparticle (MP) formation, and intraplatelet caspase activity of PCs were analyzed by flow cytometry during 7 days of storage while the platelet viability was also evaluated by MTT assay. RESULTS Both NAC‐ and VAS2870‐treated platelets had significantly lower caspase activity, MP formation, and PS exposure during storage while they also showed improved viability. The platelet count and mean platelet volume (MPV) were also better preserved in the presence of NAC. CONCLUSION Our results confirmed that either the inhibition of ROS generation or the scavenging of these oxidant agents can attenuate platelet apoptosis while improving their viability during storage. In this study, the significant improvement of platelet viability obtained by NAC suggested that its supplementation with a designated safe concentration into PCs may better preserve the quality of these products, especially for longer storage.