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  • Title: Extended storage of granulocyte concentrates mobilized by G-CSF with/without dexamethasone and collected by bag separation method.
    Author: Mochizuki K, Kikuta A, Ohto H, Nemoto K, Ito M, Sano H, Akaihata M, Suzuki H.
    Journal: Transfus Med; 2007 Aug; 17(4):296-303. PubMed ID: 17680956.
    Abstract:
    The aim of this study was to examine the extended storage of granulocyte concentrates mobilized by granulocyte-colony-stimulating factor (G-CSF) with/without dexamethasone (DEX) and collected by a bag separation method. Ten healthy adult volunteers donated blood three times: twice after granulocyte mobilization by (1) injecting G-CSF at 3 microg kg(-1) subcutaneously (s.c.) and (2) injecting G-CSF at 3 microg kg(-1) s.c. + DEX at 8 mg per oral and once (3) for a baseline control without any forms of mobilization. Granulocytes were collected by a bag separation method. The functions (phagocytosis and oxidative killing levels), viability and levels of interleukin (IL)-1beta, IL-8, IL-6 and tumour necrosis factor-alpha of granulocytes were measured. The average numbers of granulocytes collected from 200-mL samples of whole blood from the G-CSF and G-CSF + DEX groups were 35.1 x 10(8) and 49.4 x 10(8), respectively. Phagocytosis level, oxidative killing level and the viability of the granulocytes mobilized by G-CSF with/without DEX were well maintained for up to 72 h of storage after collection. The levels of the cytokines increased in a time-dependent manner. The in vitro phagocytosis level, oxidative killing level and the viability of granulocytes mobilized by G-CSF with/without DEX and collected by bag separation method can be maintained for as long as 72 h after collection.
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