Abstract
Anaphylaxis has been reported in subjects receiving peripheral blood precursor cell (PBPC) infusions; however the etiologic agent is unclear. Basophils from a PBPC-allergic subject were challenged with each individual component of the stem cell infusion and with recombinant human (rh)DNAse. Histamine release data were compared with those using basophils from control subjects. Histamine release assays were repeated using basophils from a control subject passively sensitized with serum IgE from the patient. Skin testing with bovine DNAse was performed using standard techniques. Basophil histamine release occurred in the patient, but not in controls, with bovine DNAse. No release could be provoked by any of the other components of the infusate; no release could be detected with rhDNAse. Sensitivity to bovine DNAse could be transferred to basophils from a control subject with the serum IgE from the patient. Marked epicutaneous skin test reactivity to bovine DNAse was evident in the patient, but not in control subjects. We conclude that systemic reactions during peripheral blood precursor cell infusions may represent true IgE-mediated anaphylaxis to bovine DNAse in the infusate. Skin testing can detect such sensitivity, and the use of rhDNAse may obviate such reactions.
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Essayan, D., Schilder, R., Kagey-Sobotka, A. et al. Anaphylaxis during autologous peripheral blood progenitor cell infusion. Bone Marrow Transplant 19, 749–752 (1997). https://doi.org/10.1038/sj.bmt.1700714
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DOI: https://doi.org/10.1038/sj.bmt.1700714
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