Abstract:
:Red cell-derived microparticles (RMPs) are potential mediators of transfusion-related acute lung injury (TRALI). The aim of this study was to investigate the effects of microparticles present in red cell concentrates (RCC) on polymorphonuclear neutrophil (PMN) respiratory burst and acute lung injury (ALI) in mice. Microparticles (MPs) in RCC supernatant were quantified using flow cytometry. The priming activity of either isolated MPs or RCC supernatant toward human PMN was measured in vitro. Mice were injected with lipopolysaccharide (LPS), followed by an infusion of either isolated MPs or heat-treated RCC supernatant. The lungs were harvested to assess myeloperoxidase (MPO) activity, histology and pulmonary edema. Protein content in bronchoalveolar lavage fluid (BALF) was measured. The number of RMPs increased significantly during storage. Both isolated MPs and the supernatants from RCCs that had been stored for 28 and 35days effectively primed the PMN respiratory burst. The infusion of isolated MPs or supernatants that had been stored for >28days into LPS-treated mice caused ALI. The filtered supernatant resulted in significantly ameliorated mouse ALI. MPs that accumulate during RCC storage prime the PMN respiratory burst and cause ALI in a two-event mouse model.
journal_name
Int Immunopharmacoljournal_title
International immunopharmacologyauthors
Xie R,Yang Y,Zhu Y,Gao L,Jiang X,Sun J,Bian M,Yang Jdoi
10.1016/j.intimp.2017.11.029subject
Has Abstractpub_date
2018-02-01 00:00:00pages
98-104eissn
1567-5769issn
1878-1705pii
S1567-5769(17)30446-0journal_volume
55pub_type
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