Functional characteristics of neutrophils collected and stored after administration of G-CSF

P. J. Leavey, G. Thurman, Daniel R. Ambruso

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

BACKGROUND: Granulocyte transfusion may be used in neutropenic patients with severe bacterial or fungal infections that are unresponsive to antibiotic therapy. However, the inability to store granulocyte concentrates limits their clinical usefulness. STUDY DESIGN AND METHODS: Neutrophil chemotaxis and NADPH oxidase activity and the integrity of the neutrophil NADPH oxidase system were examined after apheresis collection and during storage to 48 hours. Neutrophils were mobilized in vivo by G-CSF, collected by apheresis techniques, and stored in apheresis bags in the presence and absence of additional G-CSF. For all experiments, cells were further purified by standard techniques of dextran sedimentation and hypotonic RBC lysis. RESULTS: Neutrophil chemotaxis was preserved to 24 hours of storage but was not affected by the G-CSF added to storage units. The NADPH oxidase system was also preserved as a functioning complex, and both cytosolic proteins and membrane-associated proteins were normal to 48 hours. However, there were divergent responses by intact cells to activating stimuli and reduced oxidase activity in the cell-free system. G-CSF did not appear to significantly affect NADPH oxidase activity or NADPH oxidase system integrity during storage. CONCLUSION: Neutrophils collected after the administration of G-CSF retained functional and biochemical characteristics for at least 24 hours of storage, which suggests additional effects of G-CSF mobilization beyond enhancing PMN yields and the possibility of storage of these components after collection.

Original languageEnglish (US)
Pages (from-to)414-419
Number of pages6
JournalTransfusion
Volume40
Issue number4
DOIs
StatePublished - 2000

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Granulocyte Colony-Stimulating Factor
NADPH Oxidase
Neutrophils
Blood Component Removal
Chemotaxis
Granulocytes
Cell-Free System
Mycoses
Dextrans
Bacterial Infections
Oxidoreductases
Membrane Proteins
Anti-Bacterial Agents
Proteins

ASJC Scopus subject areas

  • Hematology
  • Immunology

Cite this

Functional characteristics of neutrophils collected and stored after administration of G-CSF. / Leavey, P. J.; Thurman, G.; Ambruso, Daniel R.

In: Transfusion, Vol. 40, No. 4, 2000, p. 414-419.

Research output: Contribution to journalArticle

Leavey, P. J. ; Thurman, G. ; Ambruso, Daniel R. / Functional characteristics of neutrophils collected and stored after administration of G-CSF. In: Transfusion. 2000 ; Vol. 40, No. 4. pp. 414-419.
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